阅读说明：本技术 一种石榴取籽装置 (Pomegranate seed extraction device ) 是由 胡高章 于 2021-07-13 设计创作，主要内容包括：本发明涉及食品加工技术领域,且公开了一种石榴取籽装置,包括箱体,所述箱体的右侧连通有进料管,所述箱体的顶部设置有切断机构,所述箱体的右侧分别设置有出料机构和加工机构,且加工机构位于出料机构的上方,该石榴取籽装置,通过切断机构、出料机构和加工机构的配合运作,可以自动对石榴进行取籽,进而减少工人的劳动强度,并且在取籽时石榴可以一直旋转着被敲打,进而使其内部取出的石榴籽更加彻底,进而减少浪费,并且通过切断机构可以在切断石榴同时对石榴移动过的路径上进行冲洗,防止石榴汁干后进而出现粘稠状现象,致使石榴会被黏住无法继续下滑至加工机构处,进而影响装置的正常工作,不利于装置的推广使用。(The invention relates to the technical field of food processing, and discloses a pomegranate seed taking device, which comprises a box body, wherein the right side of the box body is communicated with a feeding pipe, the top of the box body is provided with a cutting mechanism, the right side of the box body is respectively provided with a discharging mechanism and a processing mechanism, the processing mechanism is positioned above the discharging mechanism, the pomegranate seed taking device can automatically take seeds of pomegranates through the matching operation of the cutting mechanism, the discharging mechanism and the processing mechanism, so that the labor intensity of workers is reduced, the pomegranates can be always rotated and beaten during seed taking, so that the pomegranate seeds taken out from the pomegranate seed taking device are more thorough, the waste is reduced, and the cutting mechanism can wash the paths through which the pomegranates are moved while cutting off the pomegranates, so that the phenomenon of stickiness caused by dried pomegranate juice is prevented, and the pomegranates can not continuously slide to the processing mechanism, thereby affecting the normal operation of the device and being not beneficial to the popularization and the application of the device.)

1. The utility model provides a pomegranate seed device, includes box (1), its characterized in that: the right side intercommunication of box (1) has inlet pipe (2), the top of box (1) is provided with shutdown mechanism (3), the right side of box (1) is provided with discharge mechanism (4) and processing agency (5) respectively, and processing agency (5) are located the top of discharge mechanism (4).

2. The pomegranate seed extraction device of claim 1, wherein: the cutting mechanism (3) comprises a guide pillar (31), a chuck (32) is welded at the top end of the guide pillar (31), a reset spring (33) is sleeved on the surface of the guide pillar (31), a cutting plate (34) is fixedly connected to the bottom end of the guide pillar (31), an elastic sheet (35) and a steel sheet (36) are fixedly connected to the surface of the cutting plate (34) respectively, and a water bag (37) is fixedly connected to the rear portion of the steel sheet (36).

3. The pomegranate seed extraction device of claim 2, wherein: the surface of the guide post (31) is in sliding connection with the inner wall of the box body (1), two ends of the return spring (33) are respectively in mutual contact with the bottom end of the chuck (32) and the top of the box body (1), and two sides of the cutting plate (34) are in sliding connection with the inner wall of the box body (1).

4. The pomegranate seed extraction device of claim 1, wherein: discharge mechanism (4) are including supporting shoe (41), the inner wall sliding connection of supporting shoe (41) has slide (42), telescopic spring (43) have been welded to the bottom of slide (42), the right side of slide (42) is rotated through the connecting rod and is connected with transfer line (44), the inner wall of transfer line (44) is rotated respectively through the connecting rod and is connected with slider (45) and bracing piece (46), the inner wall of bracing piece (46) is rotated through the connecting rod and is connected with rotor plate (47), the inner wall of supporting shoe (41) is provided with trigger device (48).

5. The pomegranate seed extraction device of claim 4, wherein: the two sides of the supporting block (41) are fixedly welded with the inner wall of the box body (1), the surface of the sliding plate (42) is connected with the inner wall of the box body (1) in a sliding mode, the left side of the sliding block (45) is connected with the right side of the box body (1) in a sliding mode, the inner wall of the rotating plate (47) is connected with the inner wall of the box body (1) in a rotating mode through a connecting rod, and the bottom end of the telescopic spring (43) is fixedly welded with the inner wall of the supporting block (41).

6. The pomegranate seed extraction device of claim 4, wherein: the trigger device (48) comprises an arc plate (481), a clamping plate (482) is welded on the upper surface of the arc plate (481), a connecting spring (483) is welded on the surface of the arc plate (481), and a push plate (484) is welded on the front portion of the arc plate (481).

7. The pomegranate seed extraction device of claim 6, wherein: the surface of the arc plate (481) is in sliding connection with the inner wall of the supporting block (41), and the front end of the connecting spring (483) is welded and fixed with the inner wall of the supporting block (41).

8. The pomegranate seed extraction device of claim 1, wherein: the processing mechanism (5) is including motor (51), the output welding of motor (51) has cam (52), the inner wall welding of box (1) has fixed plate (56), the skin weld of fixed plate (56) has backup pad (53), the inner wall sliding connection of fixed plate (56) has support column (54), the inner wall welding of support column (54) has kelly (55), the bottom welding of support column (54) has briquetting (57), support spring (58) have been cup jointed on the surface of support column (54), the axle center department of cam (52) has drive pulley (59) through the welding of connecting rod, the surface of drive pulley (59) is passed through the belt and is connected with the surface drive of double belt pulley (511), the axle center department welding of double belt pulley (511) has worm (515), the inner wall mounting panel welding of box (1) has (512), the inner wall of mounting panel (512) rotates and is connected with worm wheel (513), the inner wall fixedly connected with filter plate (514) of worm wheel (513).

9. The pomegranate seed extraction device of claim 8, wherein: the left end of the motor (51) is connected to the right side of the box body (1) through bolts, the left side of the cam (52) is in contact with the right side of the supporting plate (53), the surface of the cam (52) is in contact with the surface of the clamping rod (55), two ends of the supporting spring (58) are in contact with the bottom of the fixing plate (56) and the top of the pressing block (57) respectively, the rear portion of the mounting plate (512) is in contact with the front portion of the supporting block (41), the surface of the worm wheel (513) is meshed with the surface of the worm (515), and the surface of the worm (515) is in rotating connection with the inner wall of the box body (1).

Technical Field

The invention relates to the technical field of food processing, in particular to a pomegranate seed extraction device.

Background

The food processing refers to grain grinding, feed processing, vegetable oil and sugar processing, slaughtering, meat processing, aquatic product processing, food processing activities of vegetables, fruits, nuts and the like, potato processing, dehydrated vegetable processing and vegetable can processing which are directly carried out by taking agricultural, forestry, animal husbandry and fishery products as raw materials, and is a type of processing industry of generalized agricultural products.

Pomegranate juice need take out the pomegranate seed before squeezing, and the pomegranate seed device that has also only singly beats the pomegranate after cutting, makes the pomegranate seed beat out and pass through the filter plate and drop, but because the pomegranate is in the normal position always and is beaten, can partly remain the pomegranate seed near the filter plate hole and can't pass through the filter plate, and then cause extravagant problem, so provide a pomegranate seed device and solve the problem that the aforesaid provided.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a pomegranate seed extraction device aiming at the defects in the prior art.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a pomegranate seed device, includes the box, the right side intercommunication of box has the inlet pipe, the top of box is provided with shutdown mechanism, the right side of box is provided with discharge mechanism and processing agency respectively, and processing agency is located discharge mechanism's top.

Preferably, the cutting mechanism comprises a guide pillar, a chuck is welded at the top end of the guide pillar, a reset spring is sleeved on the surface of the guide pillar, a cutting plate is fixedly connected to the bottom end of the guide pillar, an elastic sheet and a steel sheet are fixedly connected to the surface of the cutting plate respectively, and a water bag is fixedly connected to the rear portion of the steel sheet.

Preferably, the surface of the guide post is in sliding connection with the inner wall of the box body, two ends of the return spring are in mutual contact with the bottom end of the chuck and the top of the box body respectively, and two sides of the cutting plate are in sliding connection with the inner wall of the box body.

Preferably, the discharging mechanism comprises a supporting block, a sliding plate is connected to the inner wall of the supporting block in a sliding mode, an expansion spring is welded to the bottom of the sliding plate, a transmission rod is connected to the right side of the sliding plate through a connecting rod in a rotating mode, a sliding block and a supporting rod are respectively connected to the inner wall of the transmission rod through a connecting rod in a rotating mode, a rotating plate is connected to the inner wall of the supporting rod through a connecting rod in a rotating mode, and a triggering device is arranged on the inner wall of the supporting block.

Preferably, the two sides of the supporting block are welded and fixed with the inner wall of the box body, the surface of the sliding plate is connected with the inner wall of the box body in a sliding mode, the left side of the sliding block is connected with the right side of the box body in a sliding mode, the inner wall of the rotating plate is connected with the inner wall of the box body in a rotating mode through a connecting rod, and the bottom end of the telescopic spring is welded and fixed with the inner wall of the supporting block.

Preferably, the trigger device comprises an arc plate, a clamping plate is welded on the upper surface of the arc plate, a connecting spring is welded on the surface of the arc plate, and a push plate is welded on the front portion of the arc plate.

Preferably, the surface of the arc plate is in sliding connection with the inner wall of the supporting block, and the front end of the connecting spring is welded and fixed with the inner wall of the supporting block.

Preferably, the processing agency is including the motor, the output welding of motor has the cam, the inner wall welding of box has the fixed plate, the skin weld of fixed plate has the backup pad, the inner wall sliding connection of fixed plate has the support column, the inner wall welding of support column has the kelly, the bottom welding of support column has the briquetting, supporting spring has been cup jointed on the surface of support column, the axle center department of cam has drive belt pulley through the welding of connecting rod, drive belt pulley's surface is passed through the belt and is connected with the surface transmission of double-deck belt pulley, the axle center department welding of double-deck belt pulley has the worm, the inner wall welding of box has the mounting panel, the inner wall rotation of mounting panel is connected with the worm wheel, the inner wall fixedly connected with filter plate of worm wheel.

Preferably, the left end of the motor is connected to the right side of the box body through a bolt, the left side of the cam is in contact with the right side of the supporting plate, the surface of the cam is in contact with the surface of the clamping rod, two ends of the supporting spring are in contact with the bottom of the fixing plate and the top of the pressing block respectively, the rear portion of the mounting plate is in contact with the front portion of the supporting block, the surface of the worm wheel is meshed with the surface of the worm, and the surface of the worm is in rotary connection with the inner wall of the box body.

By adopting the technical scheme, the invention can bring the following beneficial effects:

1. this pomegranate seed device, through shutdown mechanism, discharge mechanism and processing agency's cooperation function, can get the seed to the pomegranate automatically, and then reduce workman's intensity of labour to the pomegranate can be rotated always and is beaten when getting the seed, and then makes its inside pomegranate seed of taking out more thorough, and then reduces extravagantly.

2. This pomegranate seed device can wash on the route that the pomegranate removed simultaneously through the water bag in the shutdown mechanism cutting off the pomegranate, prevents that the thick form phenomenon from further appearing after the pomegranate juice is dry, causes the pomegranate can't continue to slide down to processing agency department, and then influences the normal work of device.

3. This pomegranate seed device of getting can release the pomegranate of having got the seed through discharge mechanism and shutdown mechanism, prevents that the pomegranate vacant shell from continuing to stay in the device, avoids influencing the seed of getting of next pomegranate.

4. This pomegranate seed device can drive the push pedal through trigger device and release the diaphragm of the pomegranate inside that the former pomegranate was knocked down after the pomegranate cuts off when landing, prevents that the diaphragm of the pomegranate inside from staying between pomegranate and filter plate, and then leads to the pomegranate seed can't pass through the filter plate.

5. This seed device is got to pomegranate through the shell fragment on the cutting board, can make cutting board after the cutting pomegranate when reseing, can push away the pomegranate from the below through the shell fragment, and then make pomegranate cutting face down and supporting shoe contact and roll-off, prevent that the pulp that pomegranate arc surface and supporting shoe contact lead to can't be taken out, influence the practicality of device.

Drawings

Fig. 1 is a schematic view of the overall structure of a pomegranate seed extraction device according to the present invention;

fig. 2 is a schematic view of an internal structure of a pomegranate seed extraction device according to the present invention;

FIG. 3 is a schematic diagram of a cutting mechanism of the pomegranate seed extraction device according to the present invention;

FIG. 4 is a schematic view of a discharging mechanism of a pomegranate seed extracting apparatus according to the present invention;

fig. 5 is a schematic view of a triggering device of a pomegranate seed extraction device according to the present invention;

FIG. 6 is a schematic view of a processing mechanism of a pomegranate seed extraction device according to the present invention;

fig. 7 is a schematic view of a part of a processing mechanism of a pomegranate seed extraction device according to the present invention.

In the figure: 1. a box body; 2. a feed pipe; 3. a cutting mechanism; 31. a guide post; 32. a chuck; 33. a return spring; 34. cutting the board; 35. a spring plate; 36. a steel sheet; 37. a water bag; 4. a discharging mechanism; 41. a support block; 42. a slide plate; 43. a tension spring; 44. a transmission rod; 45. a slider; 46. a support bar; 47. a rotating plate; 48. a trigger device; 481. an arc plate; 482. clamping a plate; 483. a connecting spring; 484. pushing the plate; 5. a processing mechanism; 51. a motor; 52. a cam; 53. a support plate; 54. a support pillar; 55. a clamping rod; 56. a fixing plate; 57. briquetting; 58. a support spring; 59. a drive pulley; 511. a double-layer belt pulley; 512. mounting a plate; 513. a worm gear; 514. filtering the plate; 515. a worm.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The utility model provides a pomegranate seed device, as shown in fig. 1-5, including box 1, the right side intercommunication of box 1 has inlet pipe 2, the top of box 1 is provided with shutdown mechanism 3, the right side of box 1 is provided with discharge mechanism 4 and processing agency 5 respectively, and processing agency 5 is located discharge mechanism 4's top, through shutdown mechanism 3, discharge mechanism 4 and processing agency 5's cooperation function, can get the seed to the pomegranate automatically, and then reduce workman's intensity of labour, and the pomegranate can be rotated always and is beaten when getting the seed, and then make its inside pomegranate seed of taking out more thorough, and then reduce extravagantly.

In this embodiment, shutdown mechanism 3 is including guide pillar 31, the top welding of guide pillar 31 has chuck 32, reset spring 33 has been cup jointed on the surface of guide pillar 31, the bottom fixedly connected with cutting board 34 of guide pillar 31, cutting board 34's surface is fixedly connected with shell fragment 35 and steel sheet 36 respectively, the rear portion fixedly connected with water bag 37 of steel sheet 36, the material of water bag 37 is rubber, and the aperture has been seted up on the surface, can receive the extrusion to spray water after 36 crooked steel sheets, wash on the route that has removed the pomegranate, prevent that the pomegranate juice from advancing and thick form phenomenon appears after dry, cause the pomegranate can't continue to slide down to machining mechanism 5 departments, and then influence the normal work of device, add water in to water bag 37 through the syringe during water adding.

Further, the surface of guide pillar 31 and the inner wall sliding connection of box 1, reset spring 33's both ends contact with the bottom of chuck 32 and the top of box 1 respectively, the both sides of cutting board 34 and the inner wall sliding connection of box 1, can be directly connected with guide pillar 31 through the cylinder, also can manually press chuck 32 to realize cutting off of pomegranate, through shell fragment 35 on cutting board 34, when cutting board 34 resets after can making the cutting pomegranate, can push away the pomegranate from the below through shell fragment 35, and then make the downward roll-off of pomegranate cutting plane, prevent that the downward pulp that leads to of pomegranate arc surface can not be taken out, influence the practicality of device.

Furthermore, discharge mechanism 4 is including supporting shoe 41, the inner wall sliding connection of supporting shoe 41 has slide 42, slide 42's bottom welding has expanding spring 43, slide 42's right side is rotated through the connecting rod and is connected with transfer line 44, the inner wall of transfer line 44 is rotated through the connecting rod respectively and is connected with slider 45 and bracing piece 46, the inner wall of bracing piece 46 is rotated through the connecting rod and is connected with rotor plate 47, the inner wall of supporting shoe 41 is provided with trigger device 48, can open rotor plate 47 in the function of shutdown mechanism 3 through discharge mechanism 4, and then can release the pomegranate of having got the seed, prevent that the pomegranate empty shell from continuing to stay in the device, and then influence the seed of getting of next pomegranate.

In addition, the both sides of supporting shoe 41 and the inner wall welded fastening of box 1, the surface of slide 42 and the inner wall sliding connection of box 1, the left side of slider 45 and the right side sliding connection of box 1, the inner wall of rotor plate 47 passes through the connecting rod and is connected with the inner wall rotation of box 1, the bottom of expanding spring 43 and the inner wall welded fastening of supporting shoe 41, slide in the spout that fixture block and box 1 right side were seted up is passed through to the left side of slider 45, and then can be spacing by slider 45 to bracing piece 46, prevent that bracing piece 46 from directly being driven the rotation by transfer line 44, and then can't drive rotor plate 47 and open.

In addition, trigger device 48 has cardboard 482 including arc 481, the last skin weld of arc 481, the skin weld of arc 481 has connection spring 483, and the welding of arc 481 has push pedal 484, can drive push pedal 484 to push out the diaphragm of the pomegranate inside that the former pomegranate that knocks off when the landing after the pomegranate is cut off through trigger device 48, prevents that the diaphragm of the pomegranate inside from staying between pomegranate and filtration pore, and then leads to the pomegranate seed can't pass through the filtration pore.

Example 2

As shown in fig. 5-7, the surface of the arc plate 481 is slidably connected with the inner wall of the supporting block 41, the front end of the connecting spring 483 is welded and fixed with the inner wall of the supporting block 41, the arc plate 481 is soft and can drive the push plate 484 to move horizontally after being pushed out, and the connecting spring 483 can help the arc plate 481 to reset when being retracted according to the arc-shaped groove in the supporting block 41, meanwhile, the catch plate 482 consists of two connecting plates, and the two connecting plates are connected through a torsion spring, so that the catch plate 482 can be bent after the pomegranate driving the catch plate 482 to move in place, so that the pomegranate can slide over the catch plate 482, and the catch plate 482 is prevented from blocking the pomegranate.

It is worth noting that the processing mechanism 5 comprises a motor 51, a cam 52 is welded at the output end of the motor 51, a fixing plate 56 is welded on the inner wall of the box body 1, a supporting plate 53 is welded on the surface of the fixing plate 56, a supporting column 54 is slidably connected on the inner wall of the fixing plate 56, a clamping rod 55 is welded on the inner wall of the supporting column 54, a pressing block 57 is welded at the bottom end of the supporting column 54, a supporting spring 58 is sleeved on the surface of the supporting column 54, a transmission belt pulley 59 is welded on the axis of the cam 52 through a connecting rod, the surface of the transmission belt pulley 59 is in transmission connection with the surface of the double-layer belt pulley 511 through a belt, a worm 515 is welded on the axis of the double-layer belt pulley 511, a mounting plate 512 is welded on the inner wall of the box body 1, a worm wheel 513 is rotatably connected on the inner wall of the mounting plate 512, a filter plate 514 is fixedly connected on the inner wall of the worm wheel 513, an arc-shaped groove is formed at the bottom of the pressing block 57, so that the pomegranate can be limited in the groove when the pomegranate is beaten, the pomegranate is prevented from moving at will when being knocked, and the pomegranate is further prevented from being driven to rotate by the filter plate 514.

It should be noted that the left end of the motor 51 is connected to the right side of the box 1 through a bolt, the left side of the cam 52 is contacted with the right side of the supporting plate 53, the surface of the cam 52 is contacted with the surface of the clamping rod 55, two ends of the supporting spring 58 are contacted with the bottom of the fixing plate 56 and the top of the pressing block 57, respectively, the rear portion of the mounting plate 512 is contacted with the front portion of the supporting block 41, the surface of the worm wheel 513 is meshed with the surface of the worm 515, the surface of the worm 515 is rotatably connected with the inner wall of the box 1, the motor 51 is a servo motor, so that self-locking can be realized, after striking is finished, the motor 51 needs to drive the cam 52 to rotate to jack the clamping rod 55, so as to lift the pressing block 57, prevent the pressing block 57 from blocking the entering of the next pomegranate, and the surface of the supporting column 54 and the top of the fixing plate 56 are fixedly connected with contacts, when the two contacts represent that the pomegranate seeds have been taken out, thereby stopping the rotation of the motor 51 after the next raising of the latch 55.

The working principle is that pomegranate is fed from the feeding pipe 2, the pomegranate rolls onto the supporting block 41, the chuck 32 is pressed, the chuck 32 drives the guide post 31 to move downwards, the guide post 31 drives the cutting plate 34 to move downwards, the cutting plate 34 moves downwards to cut the pomegranate into two halves, the cutting plate 34 drives the sliding plate 42 to move downwards, the sliding plate 42 drives the transmission rod 44 to move, the transmission rod 44 drives the sliding block 45 to move, the sliding block 45 drives the support rod 46 to move, the support rod 46 drives the rotating plate 47 to rotate and open, the cutting plate 34 moves downwards to drive the steel sheet 36 to move downwards, the steel sheet 36 bends according to the shape of the supporting block 41 and pushes the empty pomegranate shell on the filter plate 514 to be pushed out, the water bag 37 is extruded when the steel sheet 36 bends, water in the water bag 37 is extruded through a small hole, the extruded water can clean the cambered surface on the supporting block 41 to prevent the pomegranate juice from advancing after being dried, so that the pomegranate cannot continuously slide to the processing mechanism 5, further influencing the normal operation of the device, when the steel sheet 36 is bent, the cut pomegranate is limited by the steel sheet 36 and therefore stays on the supporting block 41, when the guide post 31 is reset by the reset spring 33, the rotating plate 47 is slowly closed, and after the cutting plate 34 moves upwards, the elastic sheet 35 moves out of the supporting block 41 and then resets, at this time, the elastic sheet 35 pushes the cut pomegranate from two sides in the lower direction, at this time, the steel sheet 36 also moves upwards for a part of distance and does not continue to limit the pomegranate, at this time, the pomegranate slips down along the supporting block 41 with pulp, the sliding plate 482 moves while pushing the pomegranate, the arc plate 481 pushes the push plate 484 to move, at this time, the sliding plate 42 is not completely reset, the rotating plate 47 has a small opening, at this time, the push plate 484 pushes out a diaphragm knocked off on the filter plate 514, the diaphragm is prevented from remaining between the pomegranate and the filter plate 514, and further, the pomegranate seeds cannot pass through the filter plate 514, at this time, the motor 51 drives the cam 52 to rotate, the cam 52 drives the clamping rod 55 to move, the clamping rod 55 drives the supporting column 54 to move upwards, the cam 52 continues to rotate and is separated from the clamping rod 55, at this time, the supporting column 54 moves downwards under the action of the supporting spring 58, the supporting column 54 drives the pressing block 57 to move downwards, the pressing block 57 strikes the back of the pomegranate and beats out pomegranate seeds, meanwhile, the cam 52 drives the transmission belt pulley 59 to rotate, the transmission belt pulley 59 drives the double-layer belt pulley 511 to rotate, the double-layer belt pulley 511 drives the worm 515 to rotate, the worm 515 drives the worm wheel 513 to rotate, the worm wheel 513 drives the filtering plate 514 to rotate, the filtering plate 514 drives the pomegranate to rotate, but the pressing block 57 presses the pomegranate, so that the filtering plate 514 and the pomegranate rotate relatively, the cam 52 continues to rotate and lift the clamping rod 55 up again and then to move downwards, at this time, the pressing block 57 reciprocates and strikes the pomegranate, and the pomegranate seeds and the holes on the filtering plate 514 always correspond to the holes in continuous rotation under the rotation of the filtering plate 514, can be to the inside more thorough that takes out of pomegranate, and then reduce extravagantly, after the pomegranate seed all takes out, briquetting 57 can flatten the pomegranate shell, therefore the displacement distance length of side of support column 54 causes the contact on the support column 54 and the contact on the fixed plate 56, and the contact back motor 51 can drive kelly 55 and rise the back and stop rotatory, waits for next pomegranate to get into.

The present invention provides a pomegranate seed extraction device, and a plurality of methods and ways for implementing the technical solution, the above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention. All the components not specified in the present embodiment can be realized by the prior art.