阅读说明：本技术 一种尿素灌装设备 (Urea filling equipment ) 是由 李曦 斯建明 陈旭英 于 2020-07-02 设计创作，主要内容包括：本发明属于尿素灌装领域,尤其涉及一种尿素灌装设备,它包括支架机构、连通机构、罐盖机构,其中安装在支架机构末端的连通机构与螺纹配合于灌装罐罐口的罐盖机构配合,以向灌装罐内进行防尘防溅的尿素灌装；同时,在向灌装罐内进行尿素灌装结束后,连通机构中的滑塞进行复位过程中对环套G和弹性垫圈内壁上的残留尿素液反向刮除并带至连接圆柱上的圆槽A内进行回收,从而避免在连通机构与罐盖机构分离时发生残留尿素液的滴落对周围地面环境的污染。(The invention belongs to the field of urea filling, and particularly relates to urea filling equipment which comprises a support mechanism, a communication mechanism and a tank cover mechanism, wherein the communication mechanism arranged at the tail end of the support mechanism is matched with the tank cover mechanism in threaded fit with a tank opening of a filling tank so as to perform dustproof and splash-proof urea filling into the filling tank; simultaneously, after carrying out the urea filling to the filling jar in, the sliding plug among the communicating mechanism resets the in-process and strikes off the ring cover G and the residual urea liquid on the elastic washer inner wall is reverse and take to connect the circular slot A on the cylinder and retrieve to avoid taking place the pollution of the drippage of residual urea liquid to ground environment around when communicating mechanism and cover mechanism separate.)

1. A urea filling equipment which characterized in that: the urea filling device comprises a bracket mechanism, a communication mechanism and a tank cover mechanism, wherein the communication mechanism arranged at the tail end of the bracket mechanism is matched with the tank cover mechanism in threaded fit with a tank opening of a filling tank so as to fill urea which is dustproof and splash-proof into the filling tank;

the connecting mechanism comprises a U seat, a connecting cylinder, a swing rod, a spring A, a connecting rod, a guide rod A, a sliding plug, a ring sleeve C, a driving ring, a ring sleeve D and a clamping strip A, wherein the U seat fixedly connected with the tail end of the bracket is installed at the upper end of the connecting cylinder, and a cylindrical sliding plug is axially, hermetically and slidably matched in a circular groove A on the lower end surface of the connecting cylinder; the side wall of the circular groove A is provided with a liquid inlet hole; the upper end of the sliding plug is provided with a guide rod A which is in sealing sliding fit with the circular groove B on the connecting cylinder; the guide rod A and the sliding plug are provided with exhaust structures; a ring sleeve D is rotatably matched on the outer side of the connecting round block, and three clamping strips A which are uniformly distributed in the circumferential direction are arranged on the inner side of the ring sleeve D; a swing rod is arranged on the U seat in a swinging mode in a vertical plane around the fixed point, and one end of the swing rod is hinged with the upper end of the guide rod A through a connecting rod hinged with the swing rod; a structure for limiting the reciprocating swing amplitude of the swing rod is arranged in the U seat; two springs A for keeping the swing rod at the extreme swing position are symmetrically arranged between the swing rod and the U seat; the lower end of the sliding plug is provided with a ring sleeve C, and the lower end of the ring sleeve C is provided with a driving ring;

the tank cover mechanism comprises a sealing cover, a ring sleeve G, a clamping strip B, a plug, a ring sleeve H, a limiting block B, a spring C and a spring B, wherein a circular groove E which is identical to the central axis is formed in the sealing cover in threaded fit with the opening of the filling tank, and the ring sleeve G is installed in the circular groove E; the upper end of the ring sleeve G is matched with an elastic washer arranged at the lower end of the connecting round block, and three clamping strips B which are uniformly distributed in the circumferential direction and arranged on the outer side of the upper end of the ring sleeve G are respectively matched with the three clamping strips A; a plug axially slides in the sealing cover, and a spring B for resetting the plug is arranged in the sealing cover; the outer conical surface B on the plug is in sealing fit with the inner conical surface at the lower end of the ring sleeve G; the upper end of the plug is provided with a ring sleeve H which is in axial sliding fit with the inner wall of the ring sleeve G; l-shaped limiting blocks B radially slide in three sliding grooves which are uniformly distributed on the side wall of the ring sleeve H in the circumferential direction; the tail ends of the horizontal sections of the three limiting blocks B are respectively matched with three limiting grooves which are uniformly distributed on the inner wall of the ring sleeve G in the circumferential direction; the tail ends of the vertical sections of the three limiting blocks B are respectively provided with an inclined plane B matched with the driving ring, the inner sides of the corners of the vertical sections of the three limiting blocks B are respectively provided with a clamping groove matched with the driving ring, and the clamping grooves are transited with the corresponding inclined planes B through inclined planes C; and each limiting block B is provided with a spring C for resetting the limiting block B in a nested manner.

2. A urea filling plant according to claim 1, wherein: a circular groove C is formed in the lower end face of the guide rod A, and an exhaust hole A communicated with the circular groove C is formed in the side wall of the top end of the guide rod A; an exhaust pipe is arranged at the exhaust hole A; the upper end of the sliding plug is provided with an outer conical surface A for guiding urea to fall down to the periphery; a circular groove D butted with the circular groove C is formed in the center of the upper end of the sliding plug, and a plurality of exhaust holes B communicated with the outer cylindrical surface of the sliding plug are uniformly distributed in the circumferential direction on the inner wall of the circular groove D; a sealing ring A is arranged in a ring groove D formed in the outer cylindrical surface of the sliding plug, and the sealing ring A is in sealing sliding fit with the inner wall of the circular groove A, the inner wall of the elastic gasket and the inner wall of the ring sleeve G; a plurality of eaves blocks for preventing the falling urea solution from shielding the exhaust holes B are arranged on the outer conical surface A; two ring grooves C are formed in the inner wall of the circular groove B, and a sealing ring C in sliding fit with the guide rod A is installed in each ring groove C.

3. A urea filling plant according to claim 1, wherein: the inner wall of the ring sleeve D is provided with a ring sleeve E, and a ring sleeve B nested on the connecting cylinder rotates in a ring groove E on the inner wall of the ring sleeve E; two fixed seats are symmetrically arranged on the U seat, and a swing shaft which is rotatably matched with the swing rod is arranged between the two fixed seats; a fixed shaft parallel to the swing shaft is arranged on the swing rod, two ends of the fixed shaft are respectively matched with a rotating sleeve C in a rotating mode, and the two rotating sleeves C are respectively connected with a rotating sleeve B hinged on the fixed seat on the same side through springs A; the spring A is an extension spring; two swing limiting blocks for limiting the reciprocating swing amplitude of the swing rod are arranged in the U seat.

4. A urea filling plant according to claim 1, wherein: the sealing cover is internally provided with a ring sleeve F with the same central axis through a plurality of supporting plates, and a plurality of guide rods B which are uniformly arranged at the lower end of the plug in the circumferential direction respectively slide in a plurality of guide grooves B on the ring sleeve F; the upper end of the ring sleeve G is provided with a ring groove F matched with the elastic gasket, and the ring groove F is communicated with the inner wall of the ring sleeve G; a ring groove G is formed in the outer conical surface B, and a sealing ring B in sealing fit with the inner conical surface is arranged in the ring groove G; the spring C nested on the limiting block B is positioned in the annular groove H on the inner wall of the corresponding sliding groove; the spring C is a compression spring; one end of the spring C is connected with the inner wall of the annular groove H, and the other end of the spring C is connected with a pressure spring ring arranged on the limiting block B; the tail end of the horizontal section of the limiting block B is provided with an inclined plane A matched with the bottom of the corresponding limiting groove.

5. A urea filling plant according to claim 1, wherein: the support mechanism comprises a base, an upright post, a rotary damper A, a rotary sleeve A, a sliding sleeve A, a rotary damper B, a gear A, a toothed plate A, a sliding rod A, a guide block, a sliding sleeve B, a rotary damper C, a gear B, a toothed plate B, a sliding rod B and a hose, wherein the upright post is vertically arranged on the base, and the rotary sleeve A is rotatably matched on the upright post; a ring sleeve A and a rotary damper A are arranged on the upright column, the ring sleeve A rotates in a ring groove A on the inner wall of the rotary sleeve A, and the rotary damper A is positioned in a ring groove B on the inner wall of the ring sleeve A; the outer side wall of the rotating sleeve A is provided with a sliding sleeve A, and a sliding rod A is axially and horizontally matched in the sliding sleeve A in a sliding manner; two guide blocks symmetrically arranged on the sliding rod A respectively slide in two guide grooves A on the inner wall of the sliding sleeve A; a rotary damper B is installed in an accommodating groove A on the sliding sleeve A, a gear A is installed on the rotary damper B in an embedded mode, and the gear A is meshed with a toothed plate A installed on the sliding rod A; the tail end of the sliding rod A is provided with a sliding sleeve B; a sliding rod B is vertically matched in the sliding sleeve B in a sliding manner, and a U-shaped seat is arranged at the lower end of the sliding rod B; a rotary damper C is installed in an accommodating groove B in the sliding sleeve B, a gear B is installed on the rotary damper C in an embedded mode, and the gear B is meshed with a toothed plate B installed on the sliding rod B; the upper end of the sliding rod B is provided with a limiting block A for preventing the sliding rod A from separating from the sliding sleeve B; the hose connecting the liquid inlet hole and the urea source is laid on the upright post, the sliding sleeve A and the sliding rod B through a plurality of fixing clips.

Technical Field

The invention belongs to the field of urea filling, and particularly relates to urea filling equipment.

Background

The traditional urea filling process usually adopts a manual mode, the manual mode filling labor amount is large, and the efficiency is low. In the filling process, because the filling sealing is poor, the urea liquid is easy to leak and splash outwards, and the pollution to the surrounding ground environment is caused. Meanwhile, poor sealing performance causes external dust or foreign matters to easily enter the urea liquid in the filling tank, and the filling quality of the filled urea liquid is affected. In addition, in the manual filling process, cooperation of multiple persons is also needed, so that the labor cost is high.

Therefore, it is necessary to design a dustproof and leakproof urea filling device.

The invention designs urea filling equipment to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses urea filling equipment which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

A urea filling equipment which characterized in that: the urea filling device comprises a support mechanism, a communicating mechanism and a tank cover mechanism, wherein the communicating mechanism arranged at the tail end of the support mechanism is matched with the tank cover mechanism in threaded fit with a tank opening of a filling tank so as to fill urea which is dustproof and splash-proof into the filling tank.

The connecting mechanism comprises a U seat, a connecting cylinder, a swing rod, a spring A, a connecting rod, a guide rod A, a sliding plug, a ring sleeve C, a driving ring, a ring sleeve D and a clamping strip A, wherein the U seat fixedly connected with the tail end of the bracket is installed at the upper end of the connecting cylinder, and a cylindrical sliding plug is axially, hermetically and slidably matched in a circular groove A on the lower end surface of the connecting cylinder; the side wall of the circular groove A is provided with a liquid inlet hole; the upper end of the sliding plug is provided with a guide rod A which is in sealing sliding fit with the circular groove B on the connecting cylinder; the guide rod A and the sliding plug are provided with exhaust structures; a ring sleeve D is rotatably matched on the outer side of the connecting round block, and three clamping strips A which are uniformly distributed in the circumferential direction are arranged on the inner side of the ring sleeve D; a swing rod is arranged on the U seat in a swinging mode in a vertical plane around the fixed point, and one end of the swing rod is hinged with the upper end of the guide rod A through a connecting rod hinged with the swing rod; a structure for limiting the reciprocating swing amplitude of the swing rod is arranged in the U seat; two springs A for keeping the swing rod at the extreme swing position are symmetrically arranged between the swing rod and the U seat; the lower end of the sliding plug is provided with a ring sleeve C, and the lower end of the ring sleeve C is provided with a driving ring.

The tank cover mechanism comprises a sealing cover, a ring sleeve G, a clamping strip B, a plug, a ring sleeve H, a limiting block B, a spring C and a spring B, wherein a circular groove E which is identical to the central axis is formed in the sealing cover in threaded fit with the opening of the filling tank, and the ring sleeve G is installed in the circular groove E; the upper end of the ring sleeve G is matched with an elastic washer arranged at the lower end of the connecting round block, and three clamping strips B which are uniformly distributed in the circumferential direction and arranged on the outer side of the upper end of the ring sleeve G are respectively matched with the three clamping strips A; a plug axially slides in the sealing cover, and a spring B for resetting the plug is arranged in the sealing cover; the outer conical surface B on the plug is in sealing fit with the inner conical surface at the lower end of the ring sleeve G; the upper end of the plug is provided with a ring sleeve H which is in axial sliding fit with the inner wall of the ring sleeve G; l-shaped limiting blocks B radially slide in three sliding grooves which are uniformly distributed on the side wall of the ring sleeve H in the circumferential direction; the tail ends of the horizontal sections of the three limiting blocks B are respectively matched with three limiting grooves which are uniformly distributed on the inner wall of the ring sleeve G in the circumferential direction; the tail ends of the vertical sections of the three limiting blocks B are respectively provided with an inclined plane B matched with the driving ring, the inner sides of the corners of the vertical sections of the three limiting blocks B are respectively provided with a clamping groove matched with the driving ring, and the clamping grooves are transited with the corresponding inclined planes B through inclined planes C; and each limiting block B is provided with a spring C for resetting the limiting block B in a nested manner. The inclined plane C is convenient for connecting the cylinder and separating from the clamping groove for resetting.

As a further improvement of the technology, the lower end surface of the guide rod A is provided with a circular groove C, and the side wall of the top end of the guide rod A is provided with an exhaust hole A communicated with the circular groove C; an exhaust pipe is arranged at the exhaust hole A; the upper end of the sliding plug is provided with an outer conical surface A for guiding urea to fall down to the periphery; the center of the upper end of the sliding plug is provided with a circular groove D butted with the circular groove C, and a plurality of exhaust holes B communicated with the outer cylindrical surface of the sliding plug are uniformly distributed on the inner wall of the circular groove D in the circumferential direction. In the process of filling urea into the filling tank through the communicating mechanism and the tank cover mechanism, along with the increase of urea liquid flowing into the filling tank, air in the filling tank is discharged through the exhaust holes B, the circular groove D, the circular groove C, the exhaust holes A and the exhaust pipe in sequence. A sealing ring A is arranged in a ring groove D formed in the outer cylindrical surface of the sliding plug, and the sealing ring A is in sealing sliding fit with the inner wall of the circular groove A, the inner wall of the elastic gasket and the inner wall of the ring sleeve G. When the sliding plug is positioned in the circular groove A on the connecting cylinder, the urea liquid entering the circular groove A through the hose cannot leak. After urea filling is finished in the filling tank, along with resetting of the sliding plug, urea liquid remained on the inner wall of the ring sleeve G and the inner wall of the elastic gasket is taken away to the circular groove A by the sealing ring A, and pollution to the surrounding ground environment due to dripping of the residual urea liquid when the communicating mechanism is separated from the tank cover mechanism is avoided. And a plurality of eaves for preventing the urea solution from falling from shielding the exhaust holes B are arranged on the outer conical surface A. The eaves keep off will fall down all around and form the urea liquid curtain that shelters from to both sides to exhaust hole B through outer conical surface A effectively for every exhaust hole B's drill way can not be sheltered from by the urea liquid of whereabouts, thereby guarantees to discharge smoothly through a plurality of exhaust holes B, circular slot D, circular slot C, exhaust hole A and blast pipe at the air in the filling jar urea liquid in-process. Two ring grooves C are formed in the inner wall of the circular groove B, a sealing ring C in sliding fit with the guide rod A is installed in each ring groove C, and urea liquid located in the circular groove A in the movement process of the guide rod A is prevented from leaking through a gap between the guide rod A and the inner wall of the circular groove B.

As a further improvement of the technology, a ring sleeve E is arranged on the inner wall of the ring sleeve D, and a ring sleeve B nested on a connecting cylinder rotates in a ring groove E on the inner wall of the ring sleeve E; two fixed seats are symmetrically arranged on the U seat, and a swing shaft which is rotatably matched with the swing rod is arranged between the two fixed seats; a fixed shaft parallel to the swing shaft is arranged on the swing rod, two ends of the fixed shaft are respectively matched with a rotating sleeve C in a rotating mode, and the two rotating sleeves C are respectively connected with a rotating sleeve B hinged on the fixed seat on the same side through springs A; the spring A is an extension spring; two swing limiting blocks for limiting the reciprocating swing amplitude of the swing rod are arranged in the U seat.

As a further improvement of the technology, a ring sleeve F with the same central axis is arranged in the sealing cover through a plurality of supporting plates, and a plurality of guide rods B which are uniformly arranged at the lower end of the plug in the circumferential direction respectively slide in a plurality of guide grooves B on the ring sleeve F; the upper end of the ring sleeve G is provided with a ring groove F matched with the elastic gasket, and the ring groove F is communicated with the inner wall of the ring sleeve G; a ring groove G is formed in the outer conical surface B, and a sealing ring B in sealing fit with the inner conical surface is arranged in the ring groove G; the spring C nested on the limiting block B is positioned in the annular groove H on the inner wall of the corresponding sliding groove; the spring C is a compression spring; one end of the spring C is connected with the inner wall of the annular groove H, and the other end of the spring C is connected with a pressure spring ring arranged on the limiting block B; the tail end of the horizontal section of the limiting block B is provided with an inclined plane A matched with the bottom of the corresponding limiting groove.

As a further improvement of the technology, the support mechanism comprises a base, a stand column, a rotary damper a, a rotary sleeve a, a sliding sleeve a, a rotary damper B, a gear a, a toothed plate a, a sliding rod a, a guide block, a sliding sleeve B, a rotary damper C, a gear B, a toothed plate B, a sliding rod B and a hose, wherein the stand column is vertically installed on the base, and the rotary sleeve a is rotatably matched on the stand column; a ring sleeve A and a rotary damper A are arranged on the upright column, the ring sleeve A rotates in a ring groove A on the inner wall of the rotary sleeve A, and the rotary damper A is positioned in a ring groove B on the inner wall of the ring sleeve A; the outer side wall of the rotating sleeve A is provided with a sliding sleeve A, and a sliding rod A is axially and horizontally matched in the sliding sleeve A in a sliding manner; two guide blocks symmetrically arranged on the sliding rod A respectively slide in two guide grooves A on the inner wall of the sliding sleeve A; a rotary damper B is installed in an accommodating groove A on the sliding sleeve A, a gear A is installed on the rotary damper B in an embedded mode, and the gear A is meshed with a toothed plate A installed on the sliding rod A; the tail end of the sliding rod A is provided with a sliding sleeve B; a sliding rod B is vertically matched in the sliding sleeve B in a sliding manner, and a U-shaped seat is arranged at the lower end of the sliding rod B; a rotary damper C is installed in an accommodating groove B in the sliding sleeve B, a gear B is installed on the rotary damper C in an embedded mode, and the gear B is meshed with a toothed plate B installed on the sliding rod B; the upper end of the sliding rod B is provided with a limiting block A for preventing the sliding rod A from separating from the sliding sleeve B; the hose connecting the liquid inlet hole and the urea source is laid on the upright post, the sliding sleeve A and the sliding rod B through a plurality of fixing clips.

Compared with the traditional urea filling equipment, the urea filling equipment disclosed by the invention has the advantages that sealed urea filling is carried out in the filling tank through the matching of the communication mechanism and the tank cover mechanism, so that the urea liquid is prevented from splashing outwards in the filling process, and external dust is prevented from entering the filling tank in the filling process.

Simultaneously, after carrying out the urea filling to the filling jar in, the sliding plug among the communicating mechanism resets the in-process and strikes off the ring cover G and the residual urea liquid on the elastic washer inner wall is reverse and take to connect the circular slot A on the cylinder and retrieve to avoid taking place the pollution of the drippage of residual urea liquid to ground environment around when communicating mechanism and cover mechanism separate. The invention has simple structure and better use effect.

Drawings

Fig. 1 is a schematic view of the invention in conjunction with a filling tank.

Fig. 2 is a schematic cross-sectional view of the slide bar B, the communication mechanism, the tank cover mechanism and the filling tank.

FIG. 3 is a schematic cross-sectional view of the upright post, the rotating sleeve A, the sliding sleeve A and the sliding rod A.

Fig. 4 is a schematic sectional view of the sliding sleeve a, the rotary damper, the gear a, the toothed plate a, the sliding rod a, the sliding sleeve B and the sliding rod B.

Fig. 5 is a schematic sectional view of the sliding sleeve B, the rotary damper C, the gear B, the toothed plate B and the sliding rod B.

Fig. 6 is a schematic sectional view of the rotating sleeve A and the sliding sleeve A.

Fig. 7 is a schematic sectional view of the sliding sleeve B.

FIG. 8 is a schematic cross-sectional view of the communication mechanism in cooperation with the can lid mechanism.

Figure 9 is a schematic cross-sectional view of the can lid mechanism.

FIG. 10 is a schematic cross-sectional view of the ring sleeve G, the plug, the ring sleeve H and the stopper B.

Fig. 11 shows the cover, support plate and collar F in combination and in cross-section.

FIG. 12 shows the fitting of the collar H, plug and guide rod B and their cross-sectional views.

Fig. 13 is a schematic view of stopper B.

Fig. 14 shows a ring sleeve G and its cross-section.

Fig. 15 is a schematic sectional view of the communication mechanism.

FIG. 16 is a schematic view of the U-shaped seat, the fixed seat, the swing rod, the fixed shaft, the rotating sleeve C, the spring A and the rotating sleeve B.

Fig. 17 is a cross-sectional view of the ring sheath E, the ring sheath D and the clip strip A.

Fig. 18 is a schematic cross-sectional view of the U-seat, connecting cylinder and elastomeric washer in cooperation.

Fig. 19 is a schematic cross-sectional view of the guide rod a engaged with the seal ring C.

Figure 20 is a schematic cross-sectional view of the slip plug, ring C and drive ring.

Number designation in the figures: 1. a support mechanism; 2. a base; 3. a column; 4. a ring sleeve A; 5. a rotary damper A; 6. rotating a sleeve A; 7. a ring groove A; 8. a ring groove B; 9. a sliding sleeve A; 10. a guide groove A; 11. accommodating the tank A; 12. a rotary damper B; 13. a gear A; 14. a toothed plate A; 15. a slide bar A; 16. a guide block; 17. a sliding sleeve B; 18. accommodating the tank B; 19. a rotary damper C; 20. a gear B; 21. a toothed plate B; 22. a slide bar B; 23. a limiting block A; 24. a hose; 25. fixing the card; 26. a communicating mechanism; 27. a U seat; 28. a connecting cylinder; 29. a circular groove A; 30. a circular groove B; 31. a ring groove C; 32. a liquid inlet hole; 33. a ring sleeve B; 34. an elastic washer; 35. a swing limiting block; 36. a fixed seat; 37. a pendulum shaft; 38. a swing rod; 39. a fixed shaft; 40. a spring A; 41. rotating a sleeve B; 42. c, rotating a sleeve; 43. a connecting rod; 44. a guide rod A; 45. a circular groove C; 46. an exhaust hole A; 47. an exhaust pipe; 48. a seal ring C; 49. a sliding plug; 50. an outer conical surface A; 51. a ring groove D; 52. a circular groove D; 53. an exhaust hole B; 54. eaves blocking; 55. c, sleeving a ring sleeve; 56. a drive ring; 57. a ring sleeve D; 58. a loop E; 59. a ring groove E; 60. a clamping strip A; 61. a can cover mechanism; 62. sealing the cover; 63. a circular groove E; 64. a support plate; 65. a ring sleeve F; 66. a guide groove B; 67. a ring sleeve G; 68. a ring groove F; 69. a limiting groove; 70. an inner conical surface; 71. a clamping strip B; 72. blocking; 73. an outer conical surface B; 74. a ring groove G; 75. a ring sleeve H; 76. a chute; 77. a ring groove H; 78. a guide rod B; 79. a limiting block B; 80. an inclined plane A; 81. a bevel B; 82. a card slot; 83. a bevel C; 84. a spring C; 85. a compression spring ring; 86. a seal ring B; 87. a spring B; 88. a sealing ring A; 89. and (6) filling the tank.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1 and 2, it comprises a bracket mechanism 1, a communication mechanism 26 and a tank cover mechanism 61, wherein the communication mechanism 26 arranged at the tail end of the bracket mechanism 1 is matched with the tank cover mechanism 61 which is in threaded fit with the tank opening of the filling tank 89 so as to carry out dust-proof and splash-proof urea filling into the filling tank 89.

As shown in fig. 15, the communicating mechanism 26 includes a U seat 27, a connecting cylinder 28, a swing link 38, a spring a40, a connecting rod 43, a guide rod a44, a sliding plug 49, a ring sleeve C55, a driving ring 56, a ring sleeve D57, and a clamping strip a60, wherein as shown in fig. 2, 15, and 18, the U seat 27 fixed to the end of the bracket is installed at the upper end of the connecting cylinder 28, and a cylindrical sliding plug 49 is axially and hermetically slidably fitted in a circular groove a29 on the lower end surface of the connecting cylinder 28; the side wall of the circular groove A29 is provided with a liquid inlet hole 32; the upper end of the sliding plug 49 is provided with a guide rod A44 which is in sealed sliding fit with a circular groove B30 on the connecting cylinder 28; as shown in fig. 15 and 19, the guide rod a44 and the sliding plug 49 are provided with air exhaust structures; as shown in fig. 15 and 17, a ring sleeve D57 is rotatably fitted on the outer side of the connecting round block, and three clamping strips a60 are uniformly distributed in the circumferential direction and are mounted on the inner side of the ring sleeve D57; as shown in fig. 15 and 18, the U-shaped seat 27 is provided with a swing rod 38 which swings in a vertical plane around a fixed point, and one end of the swing rod 38 is hinged with the upper end of a guide rod a44 through a connecting rod 43 hinged with the swing rod; a structure for limiting the reciprocating swing amplitude of the swing rod 38 is arranged in the U seat 27; as shown in fig. 15 and 16, two springs a40 for keeping the swing link 38 at the extreme swing position are symmetrically installed between the swing link 38 and the U seat 27; as shown in fig. 15 and 20, a ring C55 is mounted on the lower end of the slide plug 49, and a drive ring 56 is mounted on the lower end of the ring C55.

As shown in fig. 9, the can lid mechanism 61 includes a cover 62, a ring sleeve G67, a clip B71, a plug 72, a ring sleeve H75, a stop block B79, a spring C84, and a spring B87, wherein as shown in fig. 9 and 11, a circular groove E63 having the same central axis is formed on the cover 62 in threaded engagement with the can mouth of the filling can 89, and a ring sleeve G67 is installed in the circular groove E63; as shown in fig. 8, 9 and 14, the upper end of the ring sleeve G67 is matched with the elastic washer 34 arranged at the lower end of the connecting round block, and three clamping strips B71 which are uniformly distributed in the circumferential direction and arranged at the outer side of the upper end of the ring sleeve G67 are respectively matched with the three clamping strips a 60; a plug 72 axially slides in the cover 62, and a spring B87 for resetting the plug 72 is arranged in the cover 62; as shown in fig. 8, 12 and 14, the outer tapered surface B73 on plug 72 sealingly engages the inner tapered surface 70 at the lower end of ring G67; the upper end of the plug 72 is provided with a ring sleeve H75 which is axially matched with the inner wall of the ring sleeve G67 in a sliding way; as shown in fig. 10 and 12, L-shaped limit blocks B79 radially slide in three sliding grooves 76 uniformly distributed on the side wall of the ring sleeve H75 in the circumferential direction; as shown in fig. 10 and 14, the ends of the horizontal sections of the three limit blocks B79 are respectively matched with three limit grooves 69 uniformly distributed on the inner wall of the ring sleeve G67 in the circumferential direction; as shown in fig. 8, 10 and 13, the ends of the vertical sections of the three limit blocks B79 are respectively provided with an inclined plane B81 matched with the driving ring 56, the inner sides of the corners of the vertical sections of the three limit blocks B79 are respectively provided with a clamping groove 82 matched with the driving ring 56, and the clamping groove 82 is transited with a corresponding inclined plane B81 through an inclined plane C83; each limiting block B79 is nested with a spring C84 for resetting the limiting block B. The ramp C83 facilitates the removal of the connecting cylinder 28 from the catch 82 for repositioning.

As shown in fig. 15 and 19, a circular groove C45 is formed on the lower end surface of the guide rod a44, and an exhaust hole a46 communicated with the circular groove C45 is formed on the side wall of the top end of the guide rod a 44; an exhaust pipe 47 is arranged at the exhaust hole A46; as shown in fig. 8 and 20, the upper end of the sliding plug 49 has an outer tapered surface a50 for guiding urea to fall down; the center of the upper end of the sliding plug 49 is provided with a circular groove D52 butted with the circular groove C45, and a plurality of exhaust holes B53 communicated with the outer cylindrical surface of the sliding plug 49 are uniformly distributed on the inner wall of the circular groove D52 in the circumferential direction. In the process of filling the urea into the filling tank 89 through the communicating mechanism 26 and the tank cover mechanism 61, along with the increase of the urea liquid flowing into the filling tank 89, the air in the filling tank 89 is exhausted through the plurality of exhaust holes B53, the circular groove D52, the circular groove C45, the exhaust hole A46 and the exhaust pipe 47 in sequence. A sealing ring A88 is arranged in a ring groove D51 formed in the outer cylindrical surface of the sliding plug 49, and the sealing ring A88 is in sealing sliding fit with the inner wall of the circular groove A29, the inner wall of the elastic gasket 34 and the inner wall of the ring sleeve G67. When the spool 49 is positioned in the circular groove a29 of the connecting cylinder 28, the urea solution entering the circular groove a29 through the hose 24 does not leak. After urea filling is finished in the filling tank 89, along with resetting of the sliding plug 49, the sealing ring A88 takes away urea liquid remained on the inner wall of the ring sleeve G67 and the inner wall of the elastic gasket 34 into the circular groove A29, and pollution to the surrounding ground environment due to dripping of the remained urea liquid is avoided when the communication mechanism 26 is separated from the tank cover mechanism 61. The outer conical surface A50 is provided with a plurality of eaves blocks 54 for preventing the falling urea solution from shielding the exhaust hole B53. The eaves block 54 effectively separates the urea liquid curtain which falls downwards from the outer conical surface a50 around and shields the exhaust hole B53 towards two sides, so that the opening of each exhaust hole B53 is not shielded by the falling urea liquid, and air in the filling tank 89 is smoothly discharged through the exhaust holes B53, the circular groove D52, the circular groove C45, the exhaust holes a46 and the exhaust pipe 47 in the process of filling the urea liquid into the filling tank 89. As shown in fig. 15 and 18, two ring grooves C31 are formed in the inner wall of the circular groove B30, and a sealing ring C48 in sliding fit with the guide rod a44 is installed in each ring groove C31 to prevent the urea solution in the circular groove a29 from leaking through a gap between the guide rod a44 and the inner wall of the circular groove B30 during the movement of the guide rod a 44.

As shown in fig. 8, 17 and 18, the ring E58 is installed on the inner wall of the ring D57, and the ring B33 nested on the connecting cylinder 28 is rotated in the ring groove E59 on the inner wall of the ring E58; as shown in fig. 15, 16 and 18, two fixed seats 36 are symmetrically installed on the U seat 27, and a swing shaft 37 rotatably engaged with the swing rod 38 is installed between the two fixed seats 36; a fixed shaft 39 parallel to the swing shaft 37 is arranged on the swing rod 38, rotating sleeves C42 are respectively matched at two ends of the fixed shaft 39 in a rotating way, and the two rotating sleeves C42 are respectively connected with a rotating sleeve B41 hinged on the fixed seat 36 at the same side through a spring A40; the spring A40 is an extension spring; two swing limiting blocks 35 for limiting the reciprocating swing amplitude of the swing rod 38 are arranged in the U seat 27.

As shown in fig. 9, 10 and 11, a ring sleeve F65 with the same central axis is installed in the cover 62 through a plurality of supporting plates 64, and a plurality of guide rods B78 evenly installed in the circumferential direction at the lower end of the plug 72 respectively slide in a plurality of guide grooves B66 on the ring sleeve F65; as shown in fig. 8 and 14, the upper end of the ring sleeve G67 is provided with a ring groove F68 which is matched with the elastic washer 34, and the ring groove F68 is communicated with the inner wall of the ring sleeve G67; as shown in fig. 8 and 12, a ring groove G74 is formed on the outer conical surface B73, and a sealing ring B86 which is in sealing fit with the inner conical surface 70 is installed in the ring groove G74; as shown in fig. 10 and 12, the spring C84 nested on the stopper B79 is positioned in the annular groove H77 on the inner wall of the corresponding sliding groove 76; the spring C84 is a compression spring; one end of the spring C84 is connected with the inner wall of the ring groove H77, and the other end is connected with a compression spring ring 85 arranged on the limiting block B79; as shown in fig. 10 and 13, the horizontal segment of the stopper B79 has a slope a80 at the end thereof for engaging with the bottom of the corresponding stopper groove 69.

As shown in fig. 1, 3 and 5, the above-mentioned support mechanism 1 includes a base 2, an upright column 3, a rotary damper a5, a rotary sleeve a6, a sliding sleeve a9, a rotary damper B12, a gear a13, a toothed plate a14, a sliding rod a15, a guide block 16, a sliding sleeve B17, a rotary damper C19, a gear B20, a toothed plate B21, a sliding rod B22 and a hose 24, wherein as shown in fig. 1 and 3, the upright column 3 is vertically installed on the base 2, and the rotary sleeve a6 is rotatably fitted on the upright column 3; as shown in fig. 3 and 6, a ring sleeve a4 and a rotary damper a5 are mounted on the upright post 3, the ring sleeve a4 rotates in a ring groove a7 on the inner wall of the rotary sleeve a6, and the rotary damper a5 is positioned in a ring groove B8 on the inner wall of the ring sleeve a 4; as shown in fig. 3, 4 and 6, a sliding sleeve a9 is mounted on the outer side wall of the rotating sleeve a6, and a sliding rod a15 is axially and horizontally matched in the sliding sleeve a9 in a sliding manner; the two guide blocks 16 symmetrically arranged on the sliding rod A15 slide in the two guide grooves A10 on the inner wall of the sliding sleeve A9 respectively; a rotary damper B12 is installed in an accommodating groove A11 on the sliding sleeve A9, a gear A13 is installed on the rotary damper B12 in a nested mode, and the gear A13 is meshed with a toothed plate A14 installed on a sliding rod A15; as shown in fig. 4, 5 and 7, the sliding sleeve B17 is arranged at the tail end of the sliding rod A15; a sliding rod B22 is vertically and slidably matched in the sliding sleeve B17, and a U-shaped seat is arranged at the lower end of the sliding rod B22; a rotary damper C19 is installed in an accommodating groove B18 on the sliding sleeve B17, a gear B20 is nested on the rotary damper C19, and a gear B20 is meshed with a toothed plate B21 installed on a sliding rod B22; as shown in fig. 1, the upper end of the sliding rod B22 is provided with a limit block a23 which prevents the sliding rod a15 from separating from the sliding sleeve B17; as shown in fig. 1, 2 and 5, the hose 24 connecting the liquid inlet 32 and the urea source is laid on the upright 3, the sliding bush a9 and the sliding bar B22 by a plurality of fixing clips 25.

The rotary damper a5, rotary damper B12 and rotary damper C19 of the present invention are all of the prior art.

The working process of the invention is as follows: in the initial state, the communication mechanism 26 is separated from the tank cover mechanism 61. One end of the swing rod 38 hinged to the connecting rod 43 swings to the uppermost limit position around the swing shaft 37, and the swing rod 38 is in contact with the upper limit swing block 35. The two springs a40 are in tension. The sliding plug 49 is positioned in the circular groove A29 to close the space of the circular groove A29. Spring B87 and spring C84 are in a compressed energy storage state. The outer taper B73 on plug 72 seals against the inner taper 70 at the lower end of ring G67. The inclined surface A80 end of the stop block B79 is inserted into the stop groove 69 on the inner wall of the ring sleeve G67 to fix the sealing state of the plug 72 and the ring sleeve G67.

When urea needs to be filled by using the urea filling device, the sealing cover 62 in the tank cover mechanism 61 is tightly screwed on the tank opening of the filling tank 89, and then the communication mechanism 26 is driven to reach the tank cover mechanism 61 through the rotation of the rotating sleeve A6 relative to the upright post 3, the expansion and contraction of the sliding rod A15 relative to the sliding sleeve A9 and the vertical sliding of the sliding rod B22 relative to the sliding sleeve B17, so that the circular groove A29 at the lower end of the connecting cylinder 28 is in butt joint with the upper end of the ring sleeve G67. And simultaneously, the ring sleeve D57 is rotated, so that the three clamping strips A60 on the inner wall of the ring sleeve D57 are respectively opposite to the gaps between the two adjacent clamping strips B71 on the outer cylindrical surface of the ring sleeve G67. When the elastic washer 34 is brought into contact with the upper end surface of the ring G67, the communicating means 26 is pressed downward entirely, so that the elastic washer 34 is deformed by compression. The connecting cylinder 28 drives the loop D57 downward synchronously. After the ring sleeve D57 drives the three clamping strips A60 to downwards pass through the clamping strip B71 from a gap between two adjacent clamping strips B71, the ring sleeve D57 is rotated, the ring sleeve D57 drives the three clamping strips A60 to rotate towards the right lower part of the three clamping strips B71 and fix the mutual connection between the ring sleeve G67 and the connecting cylinder 28, and the elastic gasket 34 which is extruded and deformed is kept to form a seal between the connecting cylinder 28 and the ring sleeve G67.

Then, the oscillating bar 38 is pushed upwards rapidly, so that the oscillating bar 38 oscillates around the oscillating shaft 37, one end of the oscillating bar 38 hinged to the connecting rod 43 is separated from the oscillation limiting block 35 and rapidly oscillates towards the other oscillation limiting block 35, and the oscillating bar 38 finally rapidly oscillates to the other limit position and contacts with the other oscillation limiting block 35.

During the swing of the swing link 38, the two springs a40 are further extended to store energy, and then the two springs a40 release energy again and maintain the state that the swing link 38 swings to the other limit position.

During the swinging process of the swing rod 38, the swing rod 38 drives the guide rod a44 to vertically slide downwards in the circular groove B30 through the connecting rod 43, and the guide rod a44 drives the sliding plug 49 to vertically slide downwards in the circular groove a 29. The sliding plug 49 moves the ring C55 and the driving ring 56 synchronously.

When the driving ring 56 meets the inclined plane B81 of the three limit blocks B79, the driving ring 56, which is moved downward by the sliding plug 49, drives the three limit blocks to slide radially in the corresponding sliding grooves 76 toward the center of the ring sleeve H75 through the inclined plane B81. The inclined plane A80 ends of the three limiting blocks B79 are respectively and rapidly separated from the three limiting grooves 69 on the inner wall of the ring sleeve G67, the fixing of the relative sealing state of the ring sleeve G67 and the plug 72 is rapidly released, and the spring C84 embedded on the limiting block B79 is further compressed to store energy.

When the drive ring 56 completely passes over the inclined surface B81 on the three stopper B79, the end of the inclined surface a80 of the three stopper B79 is completely disengaged from the three stopper grooves 69 on the inner wall of the ring sleeve G67 and is spaced apart from the inner wall of the ring sleeve G67. As the drive ring 56 continues to move vertically downward under the influence of the wiper plug 49, the drive ring 56 begins to meet and interact with the ramped surfaces C83 on the three stop blocks B79. The three limit blocks B79 slide away from the center of the ring sleeve H75 under the reset action of the corresponding springs C84, and the ends of the inclined planes A80 of the three limit blocks B79 approach the three limit grooves 69. When the driving ring 56 completely passes over the inclined plane C83 on the three stop blocks B79 and completely enters the clamping grooves 82 on the three stop blocks B79, the end of the inclined plane A80 of the three stop blocks B79 approaches to the stop groove 69 for a small distance and still keeps being separated from the stop groove 69, and the spring C84 nested on the stop block B79 is still in a compression energy storage state.

As the drive ring 56 continues to move vertically downward by the sliding plug 49, the drive ring 56 moves the plug 72 rapidly downward and disengages from the inner conical surface 70 of the ring G67 by three stops B79 and the ring H75, and the spring B87 is further compressed to store energy.

When the swing lever 38 is swung to the extreme position, the sliding plug 49 is fully inserted into the filling tank 89 vertically downward and is located below the ring sleeve G67, so that the circular groove A29 on the connecting cylinder 28 is communicated with the inside of the filling tank 89, and the urea solution of the urea source is filled into the filling tank 89 through the hose 24 and the circular groove A29.

During the process of filling the urea liquid into the filling tank 89, the air in the filling tank 89 is extruded and exhausted through the plurality of exhaust holes B53, the circular groove D52, the guide rod A44, the exhaust hole A46 and the exhaust pipe 47 on the sliding plug 49 due to the entering of the urea liquid.

When the urea liquid in the filling tank 89 is filled, the swing rod 38 is pulled downwards rapidly, so that the swing rod 38 swings around the swing shaft 37 to the initial state rapidly. In the quick resetting process of the swing rod 38, the swing rod 38 drives the sliding plug 49 to vertically and upwardly quickly reset through the connecting rod 43 and the guide rod A44, and the sliding plug 49 drives the ring sleeve C55 and the driving ring 56 to quickly reset.

In the quick reset process of the sliding plug 49, under the reset action of the spring B87, the plug 72 drives the ring sleeve H75 and the three limit blocks B79 to vertically and upwardly perform quick reset along with the driving ring 56. When outer taper B73 on plug 72 meets and makes sealing contact with inner taper 70 on ring G67, ring G67 forms a barrier to the vertical upward movement of plug 72 and ring H75. As the slide plug 49 moves the collar C55 and the drive ring 56 back to the original position, the drive ring 56 interacts with the ramps C83 on the three stop blocks B79. The three limit blocks B79 move towards the center of the ring sleeve H75 under the action of the driving ring 56 and the inclined plane C83 on the limit block B79, and the spring C84 nested on the limit block B79 is further slightly compressed to store energy.

When the driving ring 56 completely passes over the inclined plane C83 on the three limit blocks, with the continuous reset of the driving ring 56, the three limit blocks B79 respectively slide towards the three limit grooves 69 on the inner wall of the ring sleeve G67 under the reset action of the corresponding springs C84 and finally reinsert into the three limit grooves 69 at the same time, so as to fix the sealing state between the sliding sleeve G and the plug 72 again. When the swing lever 38 is completely swung back and reset, the sliding plug 49 is reset into the circular groove a29 on the connecting cylinder 28.

Then, the ring sleeve D57 is rotated reversely, the ring sleeve D57 drives the three clamping strips a60 to be quickly separated from the clamping strip B71, so that the three clamping strips a60 are respectively located in the gap between two adjacent clamping strips B71, and then the sliding rod B22 is pulled upwards, so that the sliding rod B22 vertically moves upwards relative to the sliding sleeve B17, the sliding rod B22 drives the communicating mechanism 26 to be separated from the tank cover mechanism 61 as a whole, and the elastic washer 34 is completely separated from the ring sleeve G67.

After the connecting mechanism 26 is separated from the can cover mechanism 61, the cap 62 in the can cover mechanism 61 is rotated reversely to separate from the filling can 89.

In the process of quick resetting of the sliding plug 49, the sliding plug 49 which is in sealing fit with the inner wall of the ring sleeve G67, the inner wall of the elastic gasket 34 and the inner wall of the round groove A29 reversely scrapes off the urea liquid remained on the inner wall of the ring sleeve G67, the inner wall of the elastic gasket 34 and the inner wall of the round groove A29 and finally brings the urea liquid into the round groove A29 for recycling, the urea liquid above the sliding plug 49 is pressed back into a urea source by the quick-resetting sliding plug 49 part through the liquid inlet and the hose 24, and the urea liquid remained on the inner wall of the ring sleeve G67, the inner wall of the elastic gasket 34 and the inner wall of the round groove A29 is prevented from dripping on the ground to pollute the surrounding ground after the communication mechanism 26 is.

In conclusion, the beneficial effects of the invention are as follows: the sealed urea filling device carries out sealed urea filling into the filling tank 89 through the matching of the communication mechanism 26 and the tank cover mechanism 61, avoids urea liquid from splashing outwards in the filling process, and prevents external dust from entering the filling tank 89 in the filling process.

Meanwhile, after urea filling into the filling tank 89 is finished, the sliding plug 49 in the communicating mechanism 26 reversely scrapes off residual urea liquid on the inner walls of the ring sleeve G67 and the elastic gasket 34 in the resetting process and brings the residual urea liquid into the circular groove A29 on the connecting cylinder 28 for recovery, so that pollution of the residual urea liquid to the surrounding ground environment due to dripping is avoided when the communicating mechanism 26 is separated from the tank cover mechanism 61.