CN112343812B

CN112343812B - Distribution valve, pumping system and pumping machine

Info

Publication number: CN112343812B
Application number: CN202011185899.0A
Authority: CN
Inventors: 朱咸磊; 雷新军; 樊毅
Original assignee: Sany Automobile Manufacturing Co Ltd
Current assignee: Sany Automobile Manufacturing Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2023-01-20
Anticipated expiration: 2040-10-30
Also published as: CN112343812A

Abstract

The invention provides a distribution valve, a pumping system and a pumping machine, wherein a valve body of the distribution valve comprises: a valve body; the two valve holes are arranged on the valve body side by side, and one ends of the two valve holes form a material inlet and a material outlet; the two feed inlets are arranged on the valve body and are respectively communicated with the two valve holes; and the two discharge ports are arranged on the valve body and are respectively communicated with the two valve holes. In the technical scheme of the invention, the feed and discharge port is communicated with the feed inlet or the feed and discharge port is communicated with the discharge port by rotating the valve core. This ensures that the reversing function of the distribution valve can be achieved. Thereby ensuring that the distribution valve can work stably and efficiently in the pumping operation and simultaneously meeting the requirement of noise reduction. Thereby expanding the application range of the distributing valve.

Description

Distribution valve, pumping system and pumping machine

Technical Field

The invention relates to the technical field of reversing distribution equipment of pumping systems, in particular to a distribution valve, a pumping system and pumping machinery.

Background

At present, a distribution valve adopted by a concrete pumping system is a mature S pipe distribution valve, and the S pipe is driven by hydraulic pressure to complete the quick reversing of the concrete pumping system so as to realize continuous pumping operation. However, the S-pipe distribution valve is hydraulically driven, so that the reversing noise, the reversing resistance, the reversing impact and the reversing abrasion are large, the reversing time is long, the S-pipe distribution valve cannot stably and efficiently work in pumping operation, and the requirement of noise reduction cannot be met.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, it is an object of the present invention to provide a dispensing valve.

A second object of the present invention is to provide a pumping system.

A third object of the invention is to provide a pumping machine.

In order to achieve the above object, an embodiment of the present invention provides a distribution valve including a valve body, a valve spool disposed in the valve body, the valve body including: a valve body; the two valve holes are arranged on the valve body side by side, and one ends of the two valve holes form a material inlet and a material outlet; the two feed inlets are arranged on the valve body and are respectively communicated with the two valve holes; the two discharge ports are arranged on the valve body and are respectively communicated with the two valve holes; the valve cores comprise two valve cores, the two valve cores are rotatably arranged in the two valve holes respectively, a flow channel is arranged on each valve core, and the feeding and discharging port of each valve hole is selectively communicated with the feeding port or the discharging port of the corresponding valve hole through the flow channel of the corresponding valve core.

In the technical scheme, the feed and discharge port is communicated with the feed inlet or the feed and discharge port is communicated with the discharge outlet by rotating the valve core. Therefore, the problems of noise pollution to the environment due to high reversing noise and resistance, easy damage of the S-tube distribution valve due to high reversing impact force and reversing abrasion and influence on the reversing efficiency of the distribution valve due to long reversing time caused by using the S-tube distribution valve in the related technology are solved, and the distribution valve can stably and efficiently work in pumping operation and simultaneously meet the requirement of noise reduction. And the application range of the distribution valve is further expanded, for example, the distribution valve in the application can be applied to a new energy electric pump vehicle. In addition, the reversing function of the distributing valve can be realized by matching the two valve cores, so that the pumping requirement of a pumping system is met.

In addition, the dispensing valve in the above embodiment provided by the present invention may further have the following additional technical features:

in any of the above technical schemes, the feeding port and the discharging port are arranged in a way of extending along the radial direction of the valve hole, an included angle a is formed between the feeding port and the discharging port, and the included angle a is greater than 45 degrees and less than or equal to 180 degrees.

In the technical scheme, the feeding port and the discharging port are arranged according to the mode, so that the communication between the feeding port and the discharging port or the feeding port can be realized by rotating the valve core, namely, the communication between the feeding port and the one of the discharging port and the feeding port can be realized, and the reversing requirement of the pumping system during working can be met.

In any of the above solutions, each spool includes: a valve core body; the flow channel is arranged in the valve core body; the first flow channel opening is arranged on the circumferential surface of the valve core body and is communicated with one end of the flow channel; the second flow passage opening is arranged on the end face of the valve core body and is communicated with the other end of the flow passage; each valve core is provided with two stations, and under the first station, the second flow passage is communicated with the material inlet and the material outlet, and the first flow passage is communicated with the material inlet; and under the second station, the second flow passage opening is communicated with the material inlet and the material outlet, and the first flow passage opening is communicated with the material outlet.

In the technical scheme, the rotary reversing function of the valve core is realized by arranging the flow channel, the first flow channel opening and the second flow channel opening, and the valve core is rotated to be switched between the first station and the second station, so that the reversing function of the distribution valve is realized, and the reversing requirement of a pumping system during working is further met.

In any of the above technical solutions, each valve core further includes a driving end, and the driving end is disposed at one end of the valve core body away from the second flow channel port.

In the technical scheme, the driving end is used for being connected with the driving device, so that the driving device can drive the valve plug to rotate conveniently, the reversing function of the distribution valve is realized, and the reversing requirement of the pumping system during working is met.

In any of the above technical solutions, the valve body further includes a pumping hole, the pumping hole is disposed on the valve body, and the pumping hole is communicated with the feed/discharge port; or the distributing valve also comprises a sealing wear-resisting ring and a wear-resisting sleeve, and the sealing wear-resisting ring and the wear-resisting sleeve are arranged between the valve core and the valve body.

In the technical scheme, the pump material hole can convey the pump material subjected to reversing operation through the distribution valve to other parts of the pumping system, so that the pumping system can work normally, and the on-site pumping operation is further completed.

A technical solution of a second aspect of the present invention provides a pumping system, including: a dispensing valve as in any one of the embodiments of the first aspect; the first concrete cylinder is connected with the distribution valve, and the end part of the first concrete cylinder is communicated with a material inlet and a material outlet on the distribution valve; the second concrete cylinder is connected with the distribution valve, the end part of the second concrete cylinder is communicated with the other material inlet and outlet on the distribution valve, and the second concrete cylinder and the first concrete cylinder are arranged at intervals in the first direction; and the driving device is arranged on the distribution valve. The pumping system provided by the second aspect of the present invention includes the distribution valve according to any one of the first aspect of the present invention, so that all the advantages of any one of the above-mentioned aspects are achieved, and details are not repeated herein.

In the scheme, the first concrete cylinder can be communicated with the pumping hole by operating the distribution valve, so that concrete in the first concrete cylinder is pumped out from the pumping hole, and meanwhile, the second concrete cylinder is communicated with the feeding hole, so that external concrete is sucked into the second concrete cylinder from the feeding hole; or the distribution valve can communicate the second concrete cylinder with the pumping hole, so that concrete in the second concrete cylinder is pumped out from the pumping hole, and meanwhile, the first concrete cylinder is communicated with the feeding hole, so that the external concrete is sucked into the first concrete cylinder from the feeding hole, and the concrete output at the pumping hole can be always kept, and the continuous pumping requirement of a pumping system is met.

In this technical scheme, through one in two case of the rotation, can realize first concrete cylinder and pump material hole intercommunication to pump out the concrete in the first concrete cylinder from pump material hole, rotatory another then makes second concrete cylinder and feed inlet intercommunication, thereby inhales the second concrete cylinder with outside concrete in from the feed inlet. The reversing function of the distributing valve can be realized by the matching use of the two valve cores, so that the continuous pumping requirement of a pumping system is met.

In any of the above aspects, the driving device includes: the first transmission gear is in driving connection with one valve core arranged in the two valve holes; the second transmission gear is in driving connection with the other valve core arranged in the two valve holes; the driving gear is simultaneously meshed with the first transmission gear and the second transmission gear; and the input shaft is partially arranged on the driving gear in a penetrating way and is used for driving the driving gear to rotate.

In this technical scheme, because drive gear meshes with first drive gear and second drive gear simultaneously, can control aforementioned two case rotations through the rotation of control input shaft like this, can be with first concrete jar and pump material hole intercommunication promptly through rotatory input shaft to pump out the concrete in the first concrete jar from pump material hole, with second concrete jar and feed inlet intercommunication simultaneously, thereby inhale the second concrete jar with outside concrete from the feed inlet in the second concrete jar. Or the second concrete cylinder is communicated with the pumping hole, so that concrete in the second concrete cylinder is pumped out from the pumping hole, and meanwhile, the first concrete cylinder is communicated with the feeding hole, so that the external concrete is sucked into the first concrete cylinder from the feeding hole, and the requirement of a pumping system on continuous pumping is met.

In any of the above solutions, the pumping system further comprises: the cover plate is arranged on the distribution valve, and an accommodating cavity for mounting the first transmission gear, the second transmission gear and the driving gear is formed between the cover plate and the distribution valve; or the hopper is arranged above the distribution valve and is communicated with the two feed inlets.

In this technical scheme, the chamber that holds that forms between apron and the distribution valve is used for placing first drive gear, second drive gear and drive gear, has avoided the gear to expose the easy destroyed problem in the air, sets up above-mentioned subassembly and can ensure that pumping system normally works.

In any of the above solutions, the pumping system further comprises: one end of the sleeve is connected with the distribution valve, and the other end of the sleeve is connected with the first concrete cylinder and/or the second concrete cylinder.

In this solution, the sleeve is used for connecting the concrete cylinder with the distribution valve, thereby ensuring that concrete can be fed from the concrete cylinder to the distribution valve or from the distribution valve to the concrete cylinder. Thereby ensuring that the pumping system is working properly.

In any of the above technical solutions, the inner side of the sleeve is provided with an annular protrusion, and the pumping system further includes a wear-resistant ring, which is disposed in the sleeve and located between the annular protrusion and the valve core.

In the technical scheme, the wear-resisting ring reduces the abrasion to the valve core when the valve core and the sleeve rotate relatively, thereby prolonging the service life of the valve core and further saving the use and maintenance cost of the distribution valve.

The technical scheme of the third aspect of the invention provides a pumping machine, which comprises a frame and any one of the pumping systems. Since the pumping machine comprises the pumping system, the advantages of the pumping system are also correspondingly realized, and the description is omitted here.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a valve body of a dispensing valve according to a first embodiment of the invention;

FIG. 2 is a schematic view of a spool of the dispensing valve in the first embodiment;

FIG. 3 shows a cross-sectional view at the spool E-E of FIG. 2;

fig. 4 is a schematic perspective view showing a valve body of a distribution valve according to a second embodiment of the present invention;

FIG. 5 illustrates a schematic perspective view of a pumping system according to an embodiment of the present invention;

FIG. 6 illustrates a front view of the pumping system of FIG. 5;

FIG. 7 shows a left side view of the pumping system of FIG. 5 (cover plate not shown);

FIG. 8 shows a top view of the pumping system of FIG. 5;

figure 9 showsbase:Sub>A cross-sectional view atbase:Sub>A-base:Sub>A of the pumping system of figure 8 (the first concrete cylinder is inbase:Sub>A material suction state, the direction of the arrow is the material suction direction of the first concrete cylinder);

fig. 10 shows a cross-sectional view at B-B of the pumping system of fig. 8 (the second concrete cylinder is in a pumping state, and the direction of the arrow is the pumping direction of the second concrete cylinder).

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 10 is:

10. a valve body; 12. a valve body; 14. a valve bore; 142. feeding and discharging ports; 16. a feed inlet; 18. a discharge port; 19. a material pumping hole; 20. a valve core; 22. a valve core body; 24. a flow channel; 242. a first runner port; 244. a second flow port; 26. a driving end; 100. a dispensing valve; 110. a first concrete cylinder; 112. a first cylinder; 114. a first piston; 120. a second concrete cylinder; 122. a second cylinder; 124. a second piston; 130. a drive device; 132. a first drive gear; 134. a second transmission gear; 136. a drive gear; 138. an input shaft; 140. a sleeve; 144. an annular projection; 150. a hopper; 160. a wear ring; 170. a cover plate; 180. sealing a wear-resistant ring; 190. a wear sleeve.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention, taken in conjunction with the accompanying drawings and detailed description, is set forth below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

It should be noted that the first direction in the present application refers to the vertical direction in fig. 8, the upper side in the present application refers to the upper side in fig. 8, and the lower side in the present application refers to the lower side in fig. 8.

A dispensing valve, a pumping system, and a pumping machine according to some embodiments of the present invention are described below with reference to fig. 1-10.

As shown in fig. 1 to 4, the present invention and the embodiment of the present invention provide a distribution valve 100, the distribution valve 100 includes a valve body 10, a valve core 20 disposed in the valve body 10, and the valve body 10 includes a valve body 12, two valve holes 14, two inlet ports 16, and two outlet ports 18. Wherein, two valve openings 14 are arranged on the valve body 12 side by side, and one end of two valve openings 14 forms the business turn over material mouth 142. Two feed inlets 16 are provided on the valve body 12 and respectively communicate with the two valve holes 14, and two discharge outlets 18 are provided on the valve body 12 and respectively communicate with the two valve holes 14. The valve core 20 comprises two valve cores 20, the two valve cores 20 are respectively and rotatably arranged in the two valve holes 14, a flow passage 24 is arranged on each valve core 20, and the feed and discharge port 142 of each valve hole 14 is selectively communicated with the feed port 16 or the discharge port 18 on the corresponding valve hole 14 through the flow passage 24 of the corresponding valve core 20.

In the above arrangement, the communication between the inlet and outlet 142 and the inlet 16 or the communication between the inlet and outlet 142 and the outlet 18 is achieved by rotating the valve core 20, so as to ensure that the reversing function of the distributing valve 100 can be achieved. Therefore, the problems of noise pollution to the environment due to high reversing noise and resistance, easy damage to the S-tube distribution valve due to high reversing impact force and reversing abrasion and influence on the reversing efficiency of the distribution valve 100 due to long reversing time caused by using the S-tube distribution valve in the related technology are solved, and the distribution valve 100 can stably and efficiently work in pumping operation and simultaneously meet the requirement of noise reduction. Thereby expanding the application range of the distributing valve 100, such as the distributing valve 100 in the present application can be applied to a new energy electric pump vehicle.

As shown in fig. 1 and 4, in the embodiment of the present invention, the inlet 16 and the outlet 18 are disposed along the radial direction of the valve hole 14, and the inlet 16 and the outlet 18 have an included angle a, which is in a range of 45 ° < a ≦ 180 °.

In the above arrangement, the feed port 16 and the discharge port 18 are arranged in the above manner, so that the communication between the feed/discharge port 142 and the discharge port 18 or the feed port 16 can be realized by rotating the valve element 20, that is, the communication between the feed/discharge port 142 and one of the discharge port 18 and the feed port 16 is realized, thereby meeting the reversing requirement of the pumping system during operation.

It should be noted that, as shown in fig. 1, the feed inlet 16 and the discharge outlet 18 are both arranged along the circumferential direction of the valve hole 14, the center of the discharge outlet 18 and the central axis of the valve hole 14 have a vertical line L1, the center of the feed inlet 16 and the central axis of the valve hole 14 have a vertical line L2, and the included angle a refers to an included angle formed by projecting the L1 and the L2 on the plane where the feed inlet 142 and the discharge outlet 142 are located.

Example one

Specifically, as shown in fig. 1, in the first embodiment of the present invention, the inlet 16 and the outlet 18 are disposed along the radial direction of the valve hole 14, and the inlet 16 and the outlet 18 have an included angle a equal to 120 °.

In the above arrangement, the feed port 16 and the discharge port 18 are arranged according to the above angles, so that the valve core 20 can be rotated by only 120 ° to achieve the reversing function of the distributing valve 100, thereby ensuring that the distributing valve 100 can stably and efficiently operate in the pumping operation, and meeting the requirements of noise reduction law. Thereby expanding the range of use of the dispensing valve 100.

It should be noted that, in a normal condition, when the valve core 20 is initially installed in the valve body 10, the first flow passage opening 242 of the valve core 20 is aligned and communicated with the inlet 16 of the valve body 10, or the first flow passage opening 242 of the valve core 20 is aligned and communicated with the outlet 18 of the valve body 10. When the first flow passage opening 242 is aligned and communicated with the feed opening 16 of the valve body 10, the first flow passage opening 242 can be aligned and communicated with the feed opening 142 of the valve body 10 only by rotating 120 degrees, so that the first reversing of the distribution valve 100 is realized. When the first channel opening 242 is aligned and communicated with the discharge opening 18 of the valve body 10, the second reversing of the distribution valve 100 can be realized only by reversely rotating the valve core 20 by 120 degrees, that is, the two reversing of the distribution valve 100 can be realized by reciprocally rotating the valve core 20.

Specifically, as shown in fig. 2 and 3, in a first embodiment of the present invention, each valve spool 20 includes a valve spool body 22, a flow passage 24, a first flow passage port 242, and a second flow passage port 244. The flow channel 24 is disposed in the valve body 22, and the first flow channel opening 242 is disposed on the circumferential surface of the valve body 22 and communicates with one end of the flow channel 24. The second flow passage opening 244 is provided on the end surface of the spool body 22, and communicates with the other end of the flow passage 24. The second flow port 244 communicates with the inlet/outlet 142, the inlet 16 communicates with the inlet/outlet 142 when the valve element 20 is rotated to a position where the first flow port 242 communicates with the inlet 16, and the outlet 18 communicates with the inlet/outlet 142 when the valve element 20 is rotated to a position where the first flow port 242 communicates with the outlet 18. Each valve core 20 has two working positions, in the first working position, the second flow passage opening 244 is communicated with the material inlet and outlet 142, and the first flow passage opening 242 is communicated with the material inlet 16; in the second position, the second flow opening 244 communicates with the inlet/outlet 142, and the first flow opening 242 communicates with the outlet 18.

In the above arrangement, the flow passage 24, the first flow passage port 242, and the second flow passage port 244 are provided to realize the rotary reversing function of the valve element 20, and the valve element 20 is rotated to switch between the first station and the second station, so that the reversing function of the distributing valve 100 is realized, and the reversing requirement of the pumping system during operation is further satisfied.

Specifically, as shown in fig. 2 and 3, in the first embodiment of the present invention, the valve core 20 further includes a driving end 26, and the driving end 26 is disposed at an end of the valve core body 22 far from the second flow passage opening 244.

In the above arrangement, the driving end 26 is used for connecting a driving device, so that the driving device drives the valve element 20 to rotate conveniently, and further, the reversing function of the distributing valve 100 is realized, so as to meet the reversing requirement when the pumping system works.

Specifically, as shown in fig. 1, in the first embodiment of the present invention, the valve body 10 further includes a pumping hole 19, the pumping hole 19 is disposed on the valve body 12, and the pumping hole 19 is communicated with the two discharge ports 18.

In the above arrangement, the pump material hole 19 can convey the pump material after reversing operation through the distribution valve 100 to other parts of the pumping system, so as to ensure that the pumping system can work normally, thereby completing the pumping operation on site.

Example two

The second embodiment differs from the first embodiment as follows:

specifically, as shown in fig. 4, in the second embodiment of the present invention, the inlet 16 and the outlet 18 are disposed along the radial direction of the valve hole 14, and the inlet 16 and the outlet 18 have an included angle a equal to 180 °.

In the above arrangement, the inlet 16 and the outlet 18 are arranged at the above angle, and the reversing function of the distributing valve 100 can be realized only by rotating 180 degrees. In addition, the included angle a is set to 180 °, so that the valve core 20 can rotate 360 ° in one direction, that is, rotate 360 ° clockwise or counterclockwise, and two reversing functions of the distribution valve 100 can be realized, and there is no need to rotate the valve core 20 back and forth to realize two reversing functions of the distribution valve 100 as in the first embodiment, so that the driving device can realize continuous reversing of the distribution valve 100 by only driving the valve core 20 to rotate in one direction, thereby improving the reversing efficiency of the distribution valve 100.

Specifically, as shown in fig. 4, in the second embodiment of the present invention, the distance between the valve hole 14 and the pumping hole 19 is large. This facilitates casting of the valve body 10, thereby reducing the manufacturing cost of the distribution valve 100 while improving the manufacturing efficiency of the distribution valve 100.

The other structures of the second embodiment are the same as those of the first embodiment, and are not described herein again.

As shown in fig. 5 to 10, the present invention also provides a pumping system comprising the distribution valve 100, the first concrete cylinder 110, the second concrete cylinder 120 and the driving device 130 according to any one of the first embodiment. The first concrete cylinder 110 is connected to the distribution valve 100, and an end of the first concrete cylinder 110 is connected to a feeding/discharging port 142 of the distribution valve 100. The second concrete cylinder 120 is connected to the distribution valve 100, an end of the second concrete cylinder 120 is connected to another material inlet/outlet 142 of the distribution valve 100, the second concrete cylinder 120 and the first concrete cylinder 110 are spaced apart in the first direction, and the driving device 130 is disposed on the distribution valve 100.

The pumping system provided by the technical solution of the second aspect of the present invention includes the dispensing valve 100 of any one of the embodiments of the first aspect, so that all the advantages of any one of the embodiments described above are provided, and details are not described herein again.

In the above arrangement, the first concrete cylinder 110 can be communicated with the pumping hole 19 by operating the distribution valve 100, so that the concrete in the first concrete cylinder 110 can be pumped out from the pumping hole 19, and meanwhile, the second concrete cylinder 120 is communicated with the feeding hole 16, so that the external concrete can be sucked into the second concrete cylinder 120 from the feeding hole 16; or the distribution valve 100 can communicate the second concrete cylinder 120 with the pumping hole 19, so that concrete in the second concrete cylinder 120 is pumped out from the pumping hole 19, and simultaneously, the first concrete cylinder 110 is communicated with the feeding hole 16, so that external concrete is sucked into the first concrete cylinder 110 from the feeding hole 16, and thus, concrete output at the pumping hole 19 can be always kept, and the continuous pumping requirement of a pumping system can be met.

Specifically, in the implementation of the present invention, the valve body 10 of the distribution valve 100 includes two valve holes 14 arranged at intervals in the first direction, two valve cores 20 are arranged in one-to-one correspondence in the two valve holes 14, wherein the feed/discharge port 142 of one valve hole 14 is communicated with the first concrete cylinder 110, and the feed/discharge port 142 of the other valve hole 14 is communicated with the second concrete cylinder 120.

In the above arrangement, one of the two valve cores 20 is rotated to communicate the first concrete cylinder 110 with the material pumping hole 19, so that concrete in the first concrete cylinder 110 is pumped out from the material pumping hole 19, and the other valve core is rotated to communicate the second concrete cylinder 120 with the feed port 16, so that external concrete is sucked into the second concrete cylinder 120 from the feed port 16. The two valve cores 20 are matched to realize the reversing function of the distribution valve 100, so that the continuous pumping requirement of a pumping system is met.

As shown in fig. 8 to 10, in the implementation of the present invention, when the valve element 20 is initially installed in the valve body 10, the first flow passage opening 242 of the upper valve element 20 is aligned and communicated with the feed opening 16 on the upper side of the valve body 10, and the first flow passage opening 242 of the lower valve element 20 is aligned and communicated with the discharge opening 18 on the lower side of the valve body 10.

Specifically, as shown in fig. 7, in the practice of the present invention, the drive device 130 includes a first transfer gear 132, a second transfer gear 134, a drive gear 136, and an input shaft 138. Specifically, the first transmission gear 132 is drivingly connected to one valve element 20 disposed in two of the valve bores 14. The second transmission gear 134 is drivingly connected to the other valve element 20 disposed in the two valve bores 14. The driving gear 136 is simultaneously engaged with the first and second transmission gears 132 and 134. The input shaft 138 is partially disposed through the drive gear 136 for driving the drive gear 136 to rotate.

In the above arrangement, since the driving gear 136 is engaged with the first transmission gear 132 and the second transmission gear 134 at the same time, the two valve cores 20 can be controlled to rotate by controlling the rotation of the input shaft 138, that is, the first concrete cylinder 110 can be communicated with the pumping hole 19 by rotating the input shaft 138, so that the concrete in the first concrete cylinder 110 is pumped out from the pumping hole 19, and the second concrete cylinder 120 is communicated with the feeding hole 16, so that the external concrete is sucked into the second concrete cylinder 120 from the feeding hole 16. Or the second concrete cylinder 120 is communicated with the pumping hole 19, so that concrete in the second concrete cylinder 120 is pumped out from the pumping hole 19, and meanwhile, the first concrete cylinder 110 is communicated with the feeding hole 16, so that external concrete is sucked into the first concrete cylinder 110 from the feeding hole 16, and the continuous pumping requirement of a pumping system is met.

Specifically, as shown in fig. 5, 6, 8 to 10, in the implementation of the present invention, the pumping system further includes a sleeve 140, one end of the sleeve 140 is connected to the distribution valve 100, and the other end of the sleeve 140 is connected to the first concrete cylinder 110 and the second concrete cylinder 120, the pumping system further includes a hopper 150, the hopper 150 is disposed on the distribution valve 100 and is communicated with the feed port 16, the pumping system further includes a cover plate 170, the cover plate 170 is disposed on the distribution valve 100, and a receiving cavity is formed between the cover plate 170 and the distribution valve 100.

In the above arrangement, the sleeve 140 is used for connecting the concrete cylinder with the distribution valve 100, the hopper 150 is used for providing external concrete, and the accommodating cavity formed between the cover plate 170 and the distribution valve 100 is used for accommodating the first transmission gear 132, the second transmission gear 134 and the driving gear 136, so that the problem that the gears are easily damaged when exposed to air is avoided, and the above assembly can ensure that the pumping system works normally.

Specifically, as shown in fig. 9 and 10, in the implementation of the present invention, the annular protrusion 144 is disposed inside the sleeve 140, and the pumping system further includes a wear-resistant ring 160, the wear-resistant ring 160 being disposed inside the sleeve 140 and between the annular protrusion 144 and the valve spool 20.

In the above arrangement, the wear ring 160 reduces the wear on the valve core 20 when the valve core 20 and the sleeve 140 rotate relatively, so as to prolong the service life of the valve core 20, and further save the use and maintenance cost of the distribution valve 100.

As shown in fig. 9 and 10, the first concrete cylinder 110 includes a first cylinder 112 and a first piston 114 disposed in the first cylinder 112. The second concrete cylinder 120 includes a second cylinder block 122 and a second piston 124 disposed in the second cylinder block 122. The seal wear assembly between the valve core 20 and the valve body 10 comprises a seal wear ring 180 and a wear sleeve 190, and the seal wear ring 180 and the wear sleeve 190 are used for reducing the wear of the valve core 20 when the valve core 20 and the valve body 10 rotate relatively, so that the service life of the valve core 20 is prolonged, and the use and maintenance cost of the distribution valve 100 is saved.

The operation of the pumping system and dispensing valve 100 of the present application is described as follows:

when the pumping system works, when the first concrete cylinder 110 is in a material suction state, the state is 1, the first concrete cylinder 110 is communicated with the feeding port 16 on the upper side of the valve body 10, and the first piston 114 performs suction motion in the first cylinder 112, so that external concrete is sucked into the first concrete cylinder 110 from the feeding port 16 on the upper side of the valve body 10, and a pumping material suction process is realized; meanwhile, the second concrete cylinder 120 is in a pumping state, the second concrete cylinder 120 is communicated with the pumping hole 19, and the second piston 124 is moved outwards in the second cylinder 122, so that concrete in the second concrete cylinder 120 is pumped out from the pumping hole 19, and a pumping process is realized, which can be seen in fig. 9 and 10.

When the material suction of the first concrete cylinder 110 and the material pumping of the second concrete cylinder 120 are completed, the state 2 is entered, the input shaft 138 is rotated clockwise, the driving gear 136 rotates clockwise to drive the first transmission gear 132 and the second transmission gear 134 to rotate counterclockwise at the same time, when the discharge port 18 on the upper side of the valve body 10 is communicated with the first flow port 242 of the valve core 20 on the upper side, and the feed port 16 on the lower side of the valve body 10 is communicated with the first flow port 242 of the valve core 20 on the lower side, the rotation is stopped, and the first reversing is completed.

When the reversing of the valve core 20 on the upper side and the valve core 20 on the lower side is completed, the concrete valve enters a state 3, at this time, the second concrete cylinder 120 is communicated with the feeding hole 16 on the lower side of the valve body 10, and the second piston 124 performs suction motion in the second cylinder 122, so that the external concrete is sucked into the second concrete cylinder 120 from the feeding hole 16 on the lower side of the valve body 10, and the pumping and material sucking processes are realized; meanwhile, the first concrete cylinder 110 is in a pumping state, the first concrete cylinder 110 is communicated with the pumping hole 19, and the first piston 114 is moved outwards in the first cylinder 112, so that concrete in the first concrete cylinder 110 is pumped out from the pumping hole 19, and a pumping process is realized.

When the pumping of the first concrete cylinder 110 and the suction of the second concrete cylinder 120 are completed, the operation enters a state 4, the input shaft 138 is rotated counterclockwise, the driving gear 136 rotates counterclockwise to drive the first transmission gear 132 and the second transmission gear 134 to rotate clockwise simultaneously, when the feed port 16 on the upper side of the valve body 10 is communicated with the first flow port 242 of the upper valve core 20, and the discharge port 18 on the lower side of the valve body 10 is communicated with the first flow port 242 of the lower valve core 20, the rotation is stopped, and the second reversing is completed. The continuous pumping process of the pumping system can be realized by the continuous circulation of the state 1 to the state 4.

In addition, the pumping machine provided by the third aspect of the invention comprises a frame and any one of the pumping systems. Since the pumping machine comprises the pumping system, the advantages of the pumping system are also correspondingly realized, and the description is omitted here.

The pumping mechanism, pumping system and dispensing valve of the present application have the following advantages:

1. the suction inlet and the discharge outlet are arranged at the bottom of the hopper 150, which is beneficial to improving the material suction performance of a pumping system;

2. the periphery of the valve core 20 is sleeved with a sealing wear-resistant ring 180, so that the valve core is convenient to wear and replace;

3. wear-resistant sealing components are designed at two ends of the valve core 20, so that the problems of leakage and the like of the distribution valve 100 are avoided;

4. when the valve core 20 is reversed, the rotation amplitude is not large, and quick reversing can be realized;

5. the defects of large reversing resistance and large impact force of the S pipe are avoided;

6. the transmission adopts mechanical transmission, the transmission resistance is small, and the novel energy electric pump truck is suitable for use.

From the above description, it can be seen that the communication between the inlet 16 and the outlet 142, or the communication between the outlet 18 and the outlet 142, is achieved by rotating the valve core 20. Thereby ensuring that the reversing function of the dispensing valve 100 is enabled. Therefore, the problems of noise pollution to the environment due to high reversing noise and resistance, easy damage to the S-tube distribution valve due to high reversing impact force and reversing abrasion and influence on the reversing efficiency of the distribution valve due to long reversing time caused by using the S-tube distribution valve in the related technology are solved, and the distribution valve 100 can stably and efficiently work in pumping operation and simultaneously meet the requirement of a noise reduction method. Thereby expanding the application range of the distribution valve 100, for example, the distribution valve 100 in the present application can be applied to a new energy electric pump vehicle.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dispensing valve, characterized in that the dispensing valve (100) comprises a valve body (10), a valve cartridge (20) arranged in the valve body (10), the valve body (10) comprising:

a valve body (12);

the two valve holes (14) are arranged on the valve body (12) side by side, and one ends of the two valve holes (14) form a feeding and discharging port (142);

the two feed inlets (16) are arranged on the valve body (12), and the two feed inlets (16) are respectively communicated with the two valve holes (14);

the two discharge ports (18) are arranged on the valve body (12), and the two discharge ports (18) are respectively communicated with the two valve holes (14);

the two valve cores (20) are respectively and rotatably arranged in the two valve holes (14), each valve core (20) is provided with a flow channel (24), and a feeding and discharging port (142) of each valve hole (14) is selectively communicated with the feeding port (16) or the discharging port (18) on the corresponding valve hole (14) through the flow channel (24) corresponding to the valve core (20);

each of the spools (20) includes: the valve core body (22), the flow channel (24) is arranged in the valve core body (22);

a first flow passage port (242) provided on the circumferential surface of the valve body (22) and communicating with one end of the flow passage (24);

a second flow passage opening (244) which is provided on an end surface of the valve body (22) and communicates with the other end of the flow passage (24);

wherein each valve core (20) has two working positions, in the first working position, the second flow passage opening (244) is communicated with the material inlet and outlet (142), and the first flow passage opening (242) is communicated with the material inlet (16); under a second station, the second flow passage opening (244) is communicated with the material inlet and outlet (142), and the first flow passage opening (242) is communicated with the material outlet (18);

the valve body (10) further comprises a material pumping hole (19), the material pumping hole (19) is formed in the valve body (12), and the material pumping hole (19) is communicated with the two discharge holes (18).

2. A distributor valve according to claim 1, wherein the inlet opening (16) and the outlet opening (18) are arranged in a radial extension of the valve bore (14), the inlet opening (16) and the outlet opening (18) having an angle a, the angle a being in the range 45 ° < a ≦ 180 °.

3. The dispensing valve in accordance with claim 1 in which each said valve spool (20) further includes a drive end (26), said drive end (26) being disposed at an end of said valve spool body (22) remote from said second flow port (244).

4. The dispensing valve according to any of claims 1 to 3 further comprising a seal wear ring (180) and a wear sleeve (190), said seal wear ring (180) and said wear sleeve (190) being disposed between said valve spool 20 and said valve body 10.

5. A pumping system, comprising:

the dispensing valve (100) of any of claims 1 to 4;

the first concrete cylinder (110) is connected with the distribution valve (100), and the end part of the first concrete cylinder (110) is communicated with a feeding and discharging port (142) on the distribution valve (100);

the second concrete cylinder (120) is connected with the distribution valve (100), the end part of the second concrete cylinder (120) is communicated with the other feeding and discharging port (142) on the distribution valve (100), and the second concrete cylinder (120) and the first concrete cylinder (110) are arranged at intervals in the first direction;

a drive device (130) arranged on the dispensing valve (100).

6. The pumping system of claim 5, wherein the drive device (130) comprises:

the first transmission gear (132) is in driving connection with one valve core (20) arranged in the two valve holes (14);

the second transmission gear (134) is in driving connection with the other valve core (20) arranged in the two valve holes (14);

a drive gear (136) simultaneously meshing with the first drive gear (132) and the second drive gear (134);

and the input shaft (138) is partially arranged on the driving gear (136) in a penetrating way and is used for driving the driving gear (136) to rotate.

7. The pumping system of claim 6, further comprising:

the cover plate (170) is arranged on the distribution valve (100), and an accommodating cavity for installing the first transmission gear (132), the second transmission gear (134) and the driving gear (136) is formed between the cover plate (170) and the distribution valve (100); or the like, or, alternatively,

a hopper (150), wherein the hopper (150) is arranged above the distribution valve (100) and is communicated with the two feed inlets (16).

8. The pumping system of any of claims 5 to 7, further comprising:

a sleeve (140), one end of the sleeve (140) is connected to the distribution valve (100), the other end of the sleeve (140) is connected to the first concrete cylinder (110) and/or the second concrete cylinder (120), an annular protrusion (144) is disposed inside the sleeve (140), and the pumping system further includes a wear-resistant ring (160), wherein the wear-resistant ring (160) is disposed inside the sleeve (140) and between the annular protrusion (144) and the valve core (20).

9. Pumping machine comprising a frame, characterized in that it further comprises a pumping system according to any one of claims 5 to 8.