阅读说明：本技术 粘稠物料行程受控的双缸泵送装置 (Double-cylinder pumping device with stroke controlled for viscous material ) 是由 彭娜 于 2020-06-23 设计创作，主要内容包括：本发明涉及泵送装置技术领域,具体是粘稠物料行程受控的双缸泵送装置,包括两个输送缸和两个液压油缸,所述输送缸的前端设有进料口和排料口,两个所述排料口的前端设有输出管道；本发明将活塞上的密封件设置成四个,分别两两一组,并在输送缸上设置对活塞中两个密封件之间供油的注油器,可以保证活塞在运动过程中始终保持着良好的润滑,降低密封件的磨损量,提高使用寿命,并且利用两个密封件之间的压力变化控制两组密封件的切换,当其中一组密封圈发生磨损泄露后,切换另一组使用,不仅可以及时的提醒使用者更换密封圈,且利用这种替换可以保证输送缸缸体的完整,同时保证施工工程的正常进行,防止工程中断或减少停滞时间。(The invention relates to the technical field of pumping devices, in particular to a double-cylinder pumping device with a stroke-controlled viscous material, which comprises two conveying cylinders and two hydraulic cylinders, wherein the front ends of the conveying cylinders are provided with a feed inlet and a discharge outlet, and the front ends of the two discharge outlets are provided with output pipelines; the four sealing elements on the piston are respectively arranged into one group in pairs, and the oil ejector for supplying oil between the two sealing elements in the piston is arranged on the conveying cylinder, so that the piston can be ensured to be always kept in good lubrication in the movement process, the abrasion loss of the sealing elements is reduced, the service life is prolonged, the switching of the two groups of sealing elements is controlled by utilizing the pressure change between the two sealing elements, when one group of sealing elements is abraded and leaked, the other group of sealing elements is switched for use, a user can be timely reminded to replace the sealing elements, the integrity of the cylinder body of the conveying cylinder can be ensured by utilizing the replacement, the normal operation of construction engineering is ensured, and the engineering interruption is prevented or the dead time is reduced.)

1. Double-cylinder pumping installations that viscous material stroke is controlled, its characterized in that: the automatic material conveying device comprises two conveying cylinders (1) and two hydraulic oil cylinders (2), wherein the front ends of the conveying cylinders (1) are provided with a feeding hole (11) and a discharging hole (12), the front ends of the discharging holes (12) are provided with an output pipeline (13), the two hydraulic oil cylinders (2) are respectively installed at the tail ends of the two conveying cylinders (1), the output ends of the hydraulic oil cylinders (2) are provided with valve rods (24) extending into the conveying cylinders (1), pistons (3) are arranged on the valve rods (24), sealing rings (34) are arranged on the outer walls of the pistons (3), each sealing ring (34) comprises a first sealing ring (341), a second sealing ring (342), a third sealing ring (343) and a fourth sealing ring (344), wherein the first sealing ring (341), the third sealing ring (343) are in contact with the inner walls of the conveying cylinders (1) or the second sealing ring (342), The fourth sealing ring (344) is in contact with the inner wall of the conveying cylinder (1), and an oil ejector (5) for injecting oil to the piston (3) is further arranged on the conveying cylinder (1).

2. The dual cylinder viscous material stroke controlled pumping apparatus of claim 1, wherein: the inside of piston (3) is equipped with two and promotes a movable chamber (301), two it separates through baffle (31) between the movable chamber of promotion piece (301), it is used for control to be equipped with in the movable chamber of promotion piece (301) the sealing ring that first sealing ring (341), second sealing ring (342) or third sealing ring (343), fourth sealing ring (344) effect state promotes piece (32), two the sealing ring promotes between the piece (32) through running through spliced pole (33) fixed connection of baffle (31).

3. The dual cylinder viscous material stroke controlled pumping apparatus of claim 2, wherein: the sealing ring promotes piece (32) with form two oil storage chambeies (305) between baffle (31), be equipped with on piston (3) respectively with two first oiling passageway (303) and second oiling passageway (304) of oil storage chamber (305) intercommunication, oil filler (5) are connected with two defeated oil pipe (51), two through switching-over valve (52) defeated oil pipe (51) respectively with first oiling passageway (303) and second oiling passageway (304) are connected.

4. The dual cylinder viscous material stroke controlled pumping apparatus of claim 3, wherein: when being full of fluid in oil storage chamber (305), the sealing ring promote the other end of piece (32) with promote the laminating of piece activity chamber (301) inner wall, oil drain port (302) on oil storage chamber (305) leak, oil drain port (302) and two lubricated chamber (306) that form between sealing ring (34) switch on.

5. The dual cylinder viscous material stroke controlled pumping apparatus of claim 2, wherein: the sealing ring pushing block (32) comprises two round tables with opposite small ends, the side wall surfaces of the round tables are in sliding connection with the sealing ring (34), the inner wall of the sealing ring (34) is arranged to be an inclined surface matched with the sealing ring pushing block (32), a guide groove (307) matched with the sealing ring (34) is further formed in the piston (3), and the guide groove (307) is radially distributed along the piston (3).

6. The dual cylinder viscous material stroke controlled pumping apparatus of claim 5, wherein: and a plurality of arc steel sheets (35) which are uniformly distributed are embedded in the inner side of the sealing ring (34).

7. The dual cylinder viscous material stroke controlled pumping apparatus of claim 3, wherein: be equipped with first elasticity festival (53) and second elasticity festival (54) of connecting the input pipeline in switching-over valve (52), be connected with guide arm (55) between first elasticity festival (53) and second elasticity festival (54), two defeated oil pipe (51) are connected respectively the output of first elasticity festival (53) and second elasticity festival (54).

8. The dual cylinder viscous material stroke controlled pumping apparatus of claim 1, wherein: be equipped with cooling layer (101) in carrying jar (1), the outside of carrying jar (1) be equipped with observation pipe (4) of cooling layer (101) intercommunication, observation pipe (4) are transparent pipe, piston (3) are kept away from one side of bin outlet (12) is filled with water, the inner wall of carrying jar (1) is equipped with be used for right spacing stopper (102) of piston (3).

9. The dual cylinder viscous material stroke controlled pumping apparatus of claim 1, wherein: two ends of the hydraulic oil cylinders (2) are respectively provided with a lower stroke valve port (21) and an upper stroke valve port (22), and one ends of the two hydraulic oil cylinders (2) close to the upper stroke valve port (22) are provided with communicating valves (23) which enable the two hydraulic oil cylinders (2) to be communicated.

10. The dual cylinder viscous material stroke controlled pumping apparatus of claim 3, wherein: and a connecting hole (241) is formed in the valve rod (24), and the oil delivery pipe (51) penetrates through the connecting hole (241) and enters the piston (3).

Technical Field

The invention relates to the technical field of pumping devices, in particular to a double-cylinder pumping device with a stroke controlled by a viscous material.

Background

The double-cylinder pumping mainly conveys viscous materials such as concrete or coal slime, and the like, in construction machinery, a concrete conveying cylinder is an important part of concrete conveying equipment for realizing the concrete conveying function, is easy to wear due to strong friction with concrete mortar during working, is a quick-wear part of the concrete conveying equipment, and directly influences the stability and the efficiency of pump truck construction, and the conveying cylinder used by the concrete conveying equipment mainly has two functions, namely sealing, and a sealing cavity is formed by the conveying cylinder and a piston to ensure that concrete can be normally pumped; secondly, concrete is conveyed, the concrete needs to enter a concrete conveying pipeline through a conveying cylinder and then is conveyed to a designated place, when a piston sealing element in the conveying cylinder is well sealed, abrasion of mortar is mainly buffered by the sealing element, if the sealing element cannot be replaced in time after being abraded, hard connection between the mortar and a cylinder wall and between the mortar and the piston is easily caused, the cylinder wall is scratched, the whole conveying cylinder needs to be replaced in serious cases, and how to timely judge whether the sealing element is abraded excessively and replaced is a problem to be solved urgently.

Disclosure of Invention

The invention aims to provide a double-cylinder pumping device with a stroke controlled for viscous materials, so as to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the double-cylinder pumping device with the stroke of viscous materials controlled comprises two conveying cylinders and two hydraulic oil cylinders, wherein the front ends of the conveying cylinders are provided with a feed inlet and a discharge outlet, the front ends of the two discharge outlets are provided with output pipelines, the two hydraulic oil cylinders are respectively arranged at the tail ends of the two conveying cylinders, the output ends of the hydraulic oil cylinders are provided with valve rods extending into the conveying cylinders, pistons are arranged on the valve rods, sealing rings are arranged on the outer walls of the pistons and comprise first sealing rings, second sealing rings, third sealing rings and fourth sealing rings, the first sealing rings and the third sealing rings are in contact with the inner walls of the conveying cylinders or the second sealing rings and the fourth sealing rings are in contact with the inner walls of the conveying cylinders, oil injectors for injecting oil to the pistons are further arranged on the conveying cylinders, and the two hydraulic oil cylinders are connected with a hydraulic pump station, the material feeding device comprises a conveying cylinder, a feeding hole at the front end of the conveying cylinder is connected with a material feeding device, a discharging hole is connected with a conveying pipe, independently controlled valves are arranged at the feeding hole and the discharging hole, in the material conveying process, one conveying cylinder is pushed by a hydraulic pump station to convey forwards, the other conveying cylinder is pulled backwards by the hydraulic pump station, in the conveying process of the conveying cylinder, the valve at the discharging hole is opened, so that materials in the conveying cylinder are pushed out by a piston, in the feeding process of the conveying cylinder, the valve at the discharging hole is closed, the materials enter the conveying cylinder from the feeding hole, in the reciprocating sliding process of the piston in the conveying cylinder, sealing rings (a first sealing ring and a third sealing ring) on the piston are in contact with the inner wall of the conveying cylinder, and the sealing rings (a second sealing ring and a fourth sealing ring) are not in contact with the inner wall of the conveying cylinder, so that the second sealing ring, The fourth sealing ring is used as a standby sealing ring, and is replaced and used after the first sealing ring and the third sealing ring are abraded, so that the first sealing ring and the third sealing ring can be replaced untimely after abrasion occurs in one construction process, and can be replaced after construction is completed, so that the continuity of engineering can be ensured under the condition that the conveying cylinder is not abraded, the whole project can be failed if concrete of one project is not poured once, the conveying cylinder can be seriously abraded if construction is continued under the condition that the sealing rings are abraded, the problem can be well solved by using the standby sealing ring, in addition, the sealing rings can be ensured to be kept in a good lubricating state and sealing property by injecting oil between the sealing rings on the piston through the oil injector, so that the abrasion of the sealing rings in the motion process can be reduced, and the heat productivity can be reduced, therefore, the deformation can be effectively reduced and the service life can be prolonged.

Preferably, the inside of piston is equipped with two and promotes a movable chamber, two promote to separate through the baffle between the movable chamber of piece, it is used for control to promote to be equipped with in the movable chamber of piece first sealing ring, second sealing ring or third sealing ring, fourth sealing ring effect state's sealing ring promotes the piece, two the sealing ring promotes between the piece through running through the spliced pole fixed connection of baffle.

Preferably, the sealing ring promotes the piece with form two oil storage chambeies between the baffle, be equipped with on the piston respectively with two first oiling passageway and the second oiling passageway that oil storage chamber communicates, the grease squirt is connected with two defeated oil pipes through the switching-over valve, two defeated oil pipe respectively with first oiling passageway and second oiling passageway are connected.

Preferably, when the oil storage cavity is filled with oil, the other end of the pushing block of the sealing ring is attached to the inner wall of the movable cavity of the pushing block, an oil drain port on the oil storage cavity leaks out, and the oil drain port is communicated with a lubricating cavity formed between the two sealing rings; the sealing ring pushing block is a structure that the small-diameter ends of two circular truncated cones are butted together, two pushing block movable cavities are arranged together, one sealing ring pushing block is arranged in each pushing block movable cavity, the two sealing ring pushing blocks are fixedly connected through a connecting column, the sliding direction of the two sealing ring pushing blocks is the axial direction of a piston, when the sealing ring pushing blocks move in the axial direction, as the side wall surface of each sealing ring pushing block is an inclined surface, the inner side surfaces of the first sealing ring, the second sealing ring or the third sealing ring and the fourth sealing ring are adaptively designed into inclined surfaces, when lubricating oil enters from the second oil injection channel during relative sliding, the sealing ring pushing blocks below are continuously extruded, the two sealing ring pushing blocks move downwards, the sealing ring pushing block above pushes the first sealing ring to elastically extend outwards to contact the inner wall surface of the conveying cylinder, the second sealing ring elastically contracts and is separated from the contact with the inner wall surface of the conveying cylinder, the lower sealing ring pushing block pushes the third sealing ring to elastically extend outwards and contact the inner wall surface of the conveying cylinder, the fourth sealing ring elastically contracts and is separated from the contact with the inner wall surface of the conveying cylinder, so that the first sealing ring and the third sealing ring are active sealing rings, the second sealing ring and the fourth sealing ring are standby sealing rings, a lubricating cavity is formed between the first sealing ring and the third sealing ring, lubricating oil flows along an oil discharge port, when one of the first sealing ring and the third sealing ring is damaged, the lubricating oil in the lubricating cavity can be leaked out, the oil pressure is changed, an oil supply pipeline is switched by utilizing the change, the lubricating oil flows into the oil storage cavity from the first oil filling channel, the lubricating oil extrudes the upper sealing ring pushing block, and the second sealing ring and the fourth sealing ring elastically extend outwards, when the first sealing ring and the third sealing ring contact with the inner wall surface of the conveying cylinder, the first sealing ring and the third sealing ring are contracted and do not contact with the inner wall surface of the conveying cylinder any more, replacement of a standby sealing ring is achieved, abrasion of the cylinder wall of the conveying cylinder caused by damage of the sealing ring can be reduced, and the conveying process can be continued.

Preferably, the sealing ring pushing block comprises two circular truncated cones with opposite small ends, the side wall surfaces of the circular truncated cones are in sliding connection with the sealing ring, the inner wall of the sealing ring is arranged to be an inclined surface matched with the sealing ring pushing block, the piston is further provided with a guide groove matched with the sealing ring, and the guide groove is distributed along the radial direction of the piston.

Preferably, a plurality of arc steel sheets which are uniformly distributed are embedded in the inner side of the sealing ring.

Preferably, a first elastic joint and a second elastic joint which are connected with an input pipeline are arranged in the reversing valve, a guide rod is connected between the first elastic joint and the second elastic joint, and the two oil conveying pipes are respectively connected with the output ends of the first elastic joint and the second elastic joint.

Preferably, be equipped with the cooling layer in the transport cylinder, the outside of transport cylinder be equipped with the observation pipe of cooling layer intercommunication, the observation pipe is transparent pipe, the piston is kept away from one side packing of bin outlet has water, the inner wall of transport cylinder is equipped with and is used for right the spacing stopper of piston, if the piston takes place to reveal, then the concrete slurry can enter into the opposite side of piston, promptly, flows into the observation pipe from the aquatic in, the staff of just so being convenient for passes through the change of quality of water, judges whether to have taken place to reveal, and the observation pipe still plays the effect to the piston cooling simultaneously, and the cooling layer can be cooled down to the wall of transport cylinder, guarantees that the sealing washer on the piston is in good operational environment, increase of service life.

Preferably, two ends of the hydraulic oil cylinders are respectively provided with a lower stroke valve port and an upper stroke valve port, and one ends of the two hydraulic oil cylinders, which are close to the upper stroke valve ports, are provided with communication valves for communicating the two hydraulic oil cylinders.

Preferably, the valve rod is provided with a connecting hole, and the oil delivery pipe penetrates through the connecting hole and enters the piston.

Compared with the prior art, the invention has the beneficial effects that:

the four sealing elements on the piston are respectively arranged into one group in pairs, and the oil ejector for supplying oil between the two sealing elements in the piston is arranged on the conveying cylinder, so that the piston can be ensured to be always kept in good lubrication in the movement process, the abrasion loss of the sealing elements is reduced, the service life is prolonged, the switching of the two groups of sealing elements is controlled by utilizing the pressure change between the two sealing elements, when one group of sealing elements is abraded and leaked, the other group of sealing elements is switched for use, a user can be timely reminded to replace the sealing elements, the integrity of the cylinder body of the conveying cylinder can be ensured by utilizing the replacement, the normal operation of construction engineering is ensured, and the engineering interruption is prevented or the dead time is reduced.

Drawings

FIG. 1 is a schematic structural view of a dual cylinder pumping apparatus with controlled viscous material stroke according to the present invention;

FIG. 2 is a schematic structural view of a transfer cylinder in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a first sealing ring and a third sealing ring on a piston acting on the inner wall of a conveying cylinder in the embodiment of the invention;

FIG. 4 is a schematic structural diagram of a second sealing ring and a fourth sealing ring on a piston acting on the inner wall of a conveying cylinder in the embodiment of the invention;

FIG. 5 is a schematic structural view of a diverter valve in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a seal ring according to an embodiment of the present invention.

Reference numbers in the figures: 1. a delivery cylinder; 101. a cooling layer; 102. a limiting block; 11. a feed inlet; 12. a discharge outlet; 13. an output pipe; 2. a hydraulic cylinder; 21. a lower stroke valve port; 22. an upper travel valve port; 23. a communication valve; 24. a valve stem; 241. connecting holes; 3. a piston; 301. a push block movable cavity; 302. an oil discharge port; 303. a first oiling channel; 304. a second oiling channel; 305. an oil storage chamber; 306. a lubrication chamber; 307. a guide groove; 31. a partition plate; 32. a sealing ring pushing block; 33. connecting columns; 34. a seal ring; 341. a first seal ring; 342. a second seal ring; 343. a third seal ring; 344. a fourth seal ring; 35. a steel sheet; 4. an observation tube; 5. an oil lubricator; 51. an oil delivery pipe; 52. a diverter valve; 53. a first elastic joint; 54. a second elastic joint; 55. a guide rod.

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.