CN213145365U

CN213145365U - Communicating valve group and pumping equipment

Info

Publication number: CN213145365U
Application number: CN202021861451.1U
Authority: CN
Inventors: 卢志学; 贺电; 徐周
Original assignee: Sany Automobile Manufacturing Co Ltd
Current assignee: Sany Automobile Manufacturing Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-05-07
Anticipated expiration: 2030-08-31

Abstract

The utility model provides an intercommunication valves and pumping equipment. The intercommunication valves group includes: a valve body; the flow channel is arranged in the valve body and comprises a first flow channel and a second flow channel; and the valve core is used for controlling the connection and disconnection of the first flow passage and the second flow passage. The valve core is arranged in the valve core accommodating cavity, and the valve core accommodating cavity is arranged between the first flow passage and the second flow passage and is inclined relative to at least one of the first flow passage and the second flow passage. The utility model discloses a intercommunication valves hydraulic oil flow loss is little, small in size, occupation space are few.

Description

Communicating valve group and pumping equipment

Technical Field

The utility model relates to a hydraulic equipment's technical field particularly, relates to intercommunication valves and pumping equipment.

Background

In concrete pumping operation, there are two groups of parallel cylinders, and in order to achieve the alternate extension and retraction of the two parallel cylinders, the two parallel cylinders are generally linked in a communicating manner. And a communicating valve group for realizing the linkage of the oil cylinders is arranged at the tail ends of the two groups of parallel oil cylinders. One of the disadvantages of the prior art communicating valve assembly is that the hydraulic oil flow loss is large.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve at least one of the above technical problems.

Therefore, the first objective of the present invention is to provide a communicating valve set.

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

For realizing the utility model discloses a first purpose, the technical scheme of the utility model provide a intercommunication valves, include: a valve body; the flow channel is arranged in the valve body and comprises a first flow channel and a second flow channel; the valve core is used for controlling the connection and disconnection of the first flow passage and the second flow passage; and the valve core accommodating cavity is arranged in the valve core accommodating cavity, is arranged between the first flow passage and the second flow passage and is inclined relative to at least one of the first flow passage and the second flow passage.

According to the technical scheme, at least part of the valve core of the communication valve group is arranged between the first flow passage and the second flow passage, and the valve core accommodating cavity is inclined relative to at least one of the first flow passage and the second flow passage. According to the technical scheme, on the basis of effectively controlling the on-off of the first flow passage and the second flow passage, the flow loss of the hydraulic oil is further reduced, and the flow loss of the hydraulic oil in the first flow passage and the flow loss of the hydraulic oil in the second flow passage are ensured to be similar, so that the driving effect of the parallel oil cylinders in the concrete pumping operation is improved.

Additionally, the utility model discloses above-mentioned technical scheme that provides can also have following additional technical characteristics:

in the above technical solution, the first flow passage includes a first straight section and a first arc-shaped section, and the first arc-shaped section is disposed between the first straight section and the valve core accommodating cavity; and/or the second flow passage comprises a second straight section and a second arc-shaped section, and the second arc-shaped section is arranged between the second straight section and the valve core accommodating cavity.

The first straight section and the first arc-shaped section, which are fitted to each other, enable the hydraulic oil to smoothly and smoothly flow between the spool accommodating chamber and the first flow passage. The second straight section and the second arc-shaped section, which are fitted to each other, enable the hydraulic oil to smoothly and smoothly flow between the spool accommodating chamber and the second flow passage. Therefore, the technical scheme can effectively avoid the vibration of the communicating valve group and reduce the noise of the communicating valve group. And the circulation efficiency of the hydraulic oil in the communicating valve group is ensured to the maximum extent.

Among the above-mentioned technical scheme, the intercommunication valves still includes: the cover plate is arranged on the valve body and used for blocking the valve core accommodating cavity; and the spring is arranged between the valve core and the cover plate and is respectively the same as the extending direction of the valve core and the extending direction of the second flow passage.

In this technical scheme, first runner and second runner are along the equidirectional and set up side by side, and the case holds the chamber and sets up between first runner and second runner to guarantee that the hydraulic oil flow loss in first runner and the second runner is close.

In the technical scheme, the valve core accommodating cavity extends into the space between the first flow channel and the second flow channel, and an included angle between the valve core accommodating cavity and the first flow channel is an acute angle. Therefore, the length of the valve core accommodating cavity and the length of the valve core can be shortened by the technical scheme, and the occupied space of the communicating valve group is further reduced.

In any one of the above technical solutions, the communication valve set further includes: the first working oil port is arranged in the first flow passage; the second working oil port is arranged in the second flow passage; the third working oil port is arranged in the first flow channel; the fourth working oil port is arranged in the second flow passage; the first working oil port and the second working oil port are arranged on any side of the communicating valve group, and the third working oil port and the fourth working oil port are arranged on any other side of the communicating valve group.

The first working oil port and the second working oil port are arranged on the same side of the communicating valve group, and the third working oil port and the fourth working oil port are arranged on the other same side of the communicating valve group. The first working oil port and the second working oil port are respectively used for being communicated with a hydraulic oil supply system. And the third working oil port is communicated with the first oil cylinder. And the fourth working oil port is communicated with the second oil cylinder. Therefore, the technical scheme not only can realize the purpose of pumping the hydraulic oil to the first oil cylinder and the second oil cylinder by controlling the valve core, but also can facilitate the installation of the communicating valve group and the installation and assembly of the communicating valve group, a hydraulic oil supply system and the oil cylinders by arranging the positions of the working oil ports.

In any of the above technical solutions, the first flow channel includes a first straight section and a third arc-shaped section, and the third arc-shaped section is disposed between the first straight section and the first working oil port; or the first flow channel comprises a first straight section and a fourth arc-shaped section, and the fourth arc-shaped section is arranged between the first straight section and the third working oil port; or the second flow passage comprises a second straight section and a fifth arc-shaped section, and the fifth arc-shaped section is arranged between the second straight section and the second working oil port; or the second flow passage comprises a second straight section and a sixth arc section, and the sixth arc section is arranged between the second straight section and the fourth working oil port.

The structure enables the hydraulic oil to smoothly and smoothly flow between the first flow passage and each oil port and between each oil port of the second flow passage. Therefore, the circulation efficiency of the hydraulic oil in the communication valve group is ensured to the maximum extent.

In any one of the above technical solutions, the communication valve set further includes: one or more flange structures, the flange structures are arranged on the valve body.

Compared with a threaded connection mode, the flange structure arranged on the communication valve bank can further realize the stable connection between the communication valve bank and other components, and enables the communication valve bank to bear higher working pressure.

In any of the above technical solutions, the valve body includes a cast valve body.

The valve body of the technical scheme has the advantages of simple manufacturing process and low cost, the flow channel of the technical scheme has smooth and smooth internal structure, low liquid resistance energy consumption, small vibration of the communicating valve group and low noise.

For realizing the utility model discloses a second purpose, the technical scheme of the utility model provide a pumping equipment, include: the pumping device comprises a first oil cylinder and a second oil cylinder; if the utility model discloses an arbitrary technical scheme's intercommunication valves, intercommunication valves are located between first hydro-cylinder and the second hydro-cylinder.

This technical scheme's pumping equipment includes if the utility model discloses arbitrary technical scheme's intercommunication valves, consequently it has if the utility model discloses the whole beneficial effect of arbitrary technical scheme's intercommunication valves, no longer give unnecessary details here.

In the above technical solution, the pumping apparatus further includes: the pumping device is driven by the hydraulic oil supply system to work; the first working oil port and the second working oil port of the communicating valve group are respectively used for being communicated with a hydraulic oil supply system, the third working oil port of the communicating valve group is used for being communicated with the first oil cylinder, and the fourth working oil port of the communicating valve group is used for being communicated with the second oil cylinder.

According to the technical scheme, the hydraulic oil from the hydraulic oil supply system is sent to the first oil cylinder and the second oil cylinder through the communicating valve group, the flowing loss of the hydraulic oil is small, and the flowing loss of the hydraulic oil in the first flow passage and the second flow passage can be ensured to be similar, so that the driving effect of the parallel oil cylinders in the concrete pumping operation is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, 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 structural diagram of a communication valve group in the related art;

FIG. 2 is a schematic view of a communication valve assembly according to another related art;

FIG. 3 is a schematic diagram illustrating the operation of a communication valve assembly according to another related art;

fig. 4 is one of the schematic structural diagrams of the communication valve set according to an embodiment of the present invention;

fig. 5 is a schematic view of the working principle of the communicating valve set according to an embodiment of the present invention;

fig. 6 is a schematic diagram of the pumping apparatus according to an embodiment of the present invention;

fig. 7 is a second schematic structural diagram of a communication valve set according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:

100': communication valve, 102': screw, 104': gasket, 106': cover plate, 108': seal ring, 110': spring, 112': valve element, 114': communication oil passage, 116': valve body, 200': first cylinder, 300': second cylinder, 400': communication valve block, 402': first check valve spool, 404': second check valve spool, 406': first channel, 408': a second channel.

Wherein, the correspondence between the reference numbers and the part names in fig. 4 and 7 is:

100: hydraulic oil supply system, 200: pumping device, 210: first cylinder, 220: second cylinder, 300: a communication valve group, 302: valve body, 304: flow passage, 306: first flow passage, 308: second flow passage, 310: spool, 312: spool accommodating chamber, 314: cover plate, 316: spring, 318: control ports, 320: first working oil port, 322: second working oil port, 324: third working oil port, 326: fourth working oil port, 330: flange structure, 400: pumping apparatus, 3062: first straight section, 3064: first arc segment, 3066: third arc segment, 3068: fourth arc segment, 3082: second straight section, 3084: second arc segment, 3086: fifth arc segment, 3088: a sixth arc segment.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. 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.

The set of communication valves 300 and pumping apparatus 400 of some embodiments of the present invention are described below with reference to fig. 4-7.

Example 1:

as shown in fig. 4, the present embodiment provides a communication valve block 300, where the communication valve block 300 includes: a valve body 302, a flow passage 304, a valve spool 310, and a spool receiving chamber 312. The flow passage 304 is disposed in the valve body 302 and includes a first flow passage 306 and a second flow passage 308. The valve element 310 is used to open and close the first flow channel 306 and the second flow channel 308. The spool 310 is disposed in a spool receiving chamber 312, and the spool receiving chamber 312 is disposed between the first flow passage 306 and the second flow passage 308 and is inclined with respect to at least one of the first flow passage 306 and the second flow passage 308.

The communication valve block 300 of the present embodiment is applied to a pumping apparatus 400. The pumping device 400 is provided with a first cylinder 210 and a second cylinder 220 arranged in parallel. In order to achieve the alternating extension and retraction of the first cylinder 210 and the second cylinder 220, the first cylinder 210 and the second cylinder 220 are generally communicated and controlled in a linkage manner. For this, the communication valve block 300 of the present embodiment may communicate the oil port of the first cylinder 210 with the oil port of the second cylinder 220. Specifically, the flow passage 304 includes two portions, a first flow passage 306 and a second flow passage 308, wherein the first flow passage 306 communicates with the first cylinder 210 of the pumping device 200 of the pumping apparatus 400 and the hydraulic oil supply system 100, respectively. The second flow passages 308 are respectively communicated with the second hydraulic oil supply systems 100 of the second cylinders 220 of the pumping devices 200 of the pumping apparatus 400. The communication valve block 300 controls the opening and closing of the first flow passage 306 and the second flow passage 308 by opening and closing the valve body 310, thereby achieving communication or separation between the oil port of the first oil cylinder 210 and the oil port of the second oil cylinder 220.

The present embodiment disposes the communication valve block 300 between the first flow passage 306 and the second flow passage 308, and the spool accommodation chamber 312 is inclined with respect to at least one of the first flow passage 306 and the second flow passage 308. Therefore, on the basis of effectively controlling the on-off of the first flow passage 306 and the second flow passage 308, the flow loss of the hydraulic oil is further reduced, and the flow losses of the hydraulic oil in the first flow passage 306 and the second flow passage 308 are ensured to be similar, so that the driving effect of the parallel oil cylinders in the concrete pumping operation is improved.

In addition, the communication valve block 300 of the present embodiment has the advantages of small size and small occupied space. Specifically, as shown in fig. 1, a communication valve block 400 ' in the related art is assembled above the ends of two cylinders, and a first check valve body 402 ' and a second check valve body 404 ' control the opening and closing of a first passage 406 ' and a second passage 408 ', thereby controlling the opening and closing of the ports of the two cylinders. There is a problem in that the communication valve block 400 'occupies a large space, and the first passage 406' and the second passage 408 'increase the volume of the communication valve block 400'. As shown in fig. 2 and 3, another related art communication valve 100 'includes a valve body 116', a valve core 112 'is disposed in the valve body 116', and a cover plate 106 'covers the valve core 112'. The cover plate 106 ' and the valve core 112 ' are connected by a spring 110 '. The cover plate 106 'is fastened by screws 102'. A washer 104 'is provided under the screw 102'. The sealing ring 108' performs a sealing function. The valve core 112 'controls the on-off of the communication oil passage 114', so as to control the on-off of the first oil cylinder 200 'and the second oil cylinder 300'. However, in the related art communication valve 100 ', the valve body 116' is provided at one side edge of the flow passage, that is: the axis of the valve body 116 ' and the axis of the first cylinder 200 ' or the axis of the second cylinder 300 ' are perpendicular to each other. This has the problem that the overall volume of the communication valve 100 'is still large, and in particular the length of the communication valve 100' is long. As shown in fig. 4, in order to reduce the volume and length of the communication valve set 300 and reduce the occupied space thereof, in the present embodiment, at least a portion of the valve core 310 of the communication valve set 300 is disposed between the first flow passage 306 and the second flow passage 308, so as to further save the occupied space of the communication valve set 300 on the basis of effectively controlling the on-off of the first flow passage 306 and the second flow passage 308.

Example 2:

as shown in fig. 7, the present embodiment provides a communication valve block 300, and in addition to the technical features of the above embodiment, the present embodiment further includes the following technical features.

The first flow passage 306 includes a first straight section 3062 and a first arcuate section 3064, the first arcuate section 3064 being disposed between the first straight section 3062 and the valve spool receiving cavity 312; and/or second flow passage 308 includes a second straight segment 3082 and a second arcuate segment 3084, second arcuate segment 3084 being disposed between second straight segment 3082 and spool receiving cavity 312.

The first straight section 3062 and the first curved section 3064, which cooperate with each other, enable the hydraulic oil to smoothly and smoothly flow between the spool receiving chamber 312 and the first flow passage 306. The second straight section 3082 and the second curved section 3084, which are fitted to each other, enable the hydraulic oil to smoothly and smoothly flow between the spool accommodating chamber 312 and the second flow passage 308. Therefore, the technical scheme can effectively avoid the vibration of the communication valve group 300 and reduce the noise of the communication valve group 300. And the circulation efficiency of the hydraulic oil in the communication valve block 300 is ensured to the maximum extent.

Example 3:

as shown in fig. 4, the present embodiment provides a communication valve block 300, and in addition to the technical features of the above embodiment, the present embodiment further includes the following technical features.

The communication valve block 300 further includes: a cover plate 314, a spring 316, and a control oil port 318. A cover 314 is disposed over the valve body 302 for blocking the cartridge receiving cavity 312. The spring 316 is disposed between the valve core 310 and the cover plate 314 and is connected to the valve core 310 and the cover plate 314, respectively. A control port 318 is provided in the cover plate 314 and communicates with the spool receiving chamber 312.

The valve element receiving chamber 312 of the present embodiment has a cylindrical structure, and the cover plate 314 is coupled to the valve body 302 by welding or screwing. The spring 316 is connected at both ends to the cover plate 314 and the spool 310, respectively. The spool 310 is movable in the spool receiving chamber 312.

The spool 310 of the present embodiment is a type of spool 310 that is driven by hydraulic oil. Specifically, the control port 318 can communicate with an external pressure oil source, and functions to control opening and closing of the valve body 310. When an external pressure oil source enters the spool receiving chamber 312 through the control port 318, the spool 310 is closed by the pressure oil source. When no external source of pressurized oil enters spool receiving cavity 312 through control port 318, spool 310 opens.

The valve body 310 of the present embodiment can be opened and closed stably by the pressure oil source. Thereby ensuring the accuracy of the linkage control of the first cylinder 210 and the second cylinder 220.

Example 4:

The first flow channel 306 extends in the same direction as the second flow channel 308.

In this embodiment, the first flow channel 306 and the second flow channel 308 are arranged in the same direction and side by side, and the spool accommodation chamber 312 extends between the first flow channel 306 and the second flow channel 308 to ensure that the flow losses of the hydraulic oil in the first flow channel 306 and the second flow channel 308 are similar. The angle between the spool receiving chamber 312 and the first flow passage 306 is acute. Thus, the present embodiment can shorten the length of the spool housing chamber 312 and the length of the spool 310, and further reduce the occupied space of the communication valve block 300.

Example 5:

The communication valve block 300 further includes: a first working oil port 320, a second working oil port 322, a third working oil port 324, and a fourth working oil port 326. The first working oil port 320 is provided in the first flow passage 306. The second working oil port 322 is provided in the second flow passage 308. The third working port 324 is disposed in the first flow passage 306. The fourth working port 326 is provided in the second flow passage 308. The first working oil port 320 and the second working oil port 322 are disposed at any side of the communication valve block 300, and the third working oil port 324 and the fourth working oil port 326 are disposed at the other side of the communication valve block 300.

In this embodiment, the first working oil port 320 and the second working oil port 322 are respectively used for communicating with the hydraulic oil supply system 100. The third working port 324 is adapted to communicate with the first cylinder 210. The fourth working port 326 is adapted to communicate with the second cylinder 220. Thus, the present embodiment can achieve the purpose of pumping hydraulic oil to the first and

second oil cylinders

210 and 220 by controlling the spool 310. The first working oil port 320 and the second working oil port 322 are disposed at the same side of the communication valve block 300, and the third working oil port 324 and the fourth working oil port 326 are disposed at the other same side of the communication valve block 300. Thus, the present embodiment can facilitate the installation of the communication valve block 300 and the installation assembly thereof with the hydraulic oil supply system 100, the first cylinder 210, and the second cylinder 220 by setting the positions of the respective working oil ports.

Example 6:

The first flow passage 306 comprises a first straight section 3062 and a third arc-shaped section 3066, the third arc-shaped section 3066 is disposed between the first straight section 3062 and the first working oil port 320; or the first flow passage 306 comprises a first straight section 3062 and a fourth arc-shaped section 3068, the fourth arc-shaped section 3068 is disposed between the first straight section 3062 and the third working oil port 324; or the second flow channel 308 comprises a second straight section 3082 and a fifth arc-shaped section 3086, and the fifth arc-shaped section 3086 is arranged between the second straight section 3082 and the second working oil port 322; or the second flow passage 308 includes a second straight section 3082 and a sixth curved section 3088, the sixth curved section 3088 being disposed between the second straight section 3082 and the fourth working oil port 326.

The above structure enables the hydraulic oil to smoothly and smoothly flow between the first flow passage 306 and the respective oil ports, and between the respective oil ports of the second flow passage 308. Thereby maximally securing the circulation efficiency of the hydraulic oil within the communication valve block 300.

Example 7:

The communication valve block 300 further includes: one or more flange structures 330, the flange structures 330 being disposed on the valve body 302.

Compared with the way of screw connection, the flange structure 330 provided on the communication valve block 300 can further realize stable connection of the communication valve block 300 and other components, and enable the communication valve block 300 to bear higher working pressure.

Example 8:

The valve body 302 comprises a cast valve body.

In the related art, the valve body of the communication valve is a forged valve body, and the surface and the inner oil duct of the communication valve are processed by adopting traditional machining processes such as drilling, boring, milling and the like. Also, in order to satisfy the oil port communication in different directions, it is inevitable to process a process hole on the communication valve of the related art, which causes complication of the valve block molding process and increase of cost. For this reason, the valve body 302 of the present embodiment is a cast valve body, the external shape structure of which can be optimized according to the actual loading requirement, and the flow passage 304 inside which is formed in one step by casting. Therefore, the valve body 302 of the present embodiment has a simple manufacturing process and a low cost, and the flow channel 304 of the present embodiment has a smooth and smooth inner structure, low liquid resistance energy consumption, low vibration of the communicating valve set 300, and low noise.

Example 9:

as shown in fig. 5 and 6, the present embodiment provides a pumping apparatus 400 including: the pumping device 200, the pumping device 200 includes a first cylinder 210 and a second cylinder 220. As in any embodiment of the present invention, the communicating valve set 300 is disposed between the first cylinder 210 and the second cylinder 220.

The pumping equipment 400 of this embodiment includes like the communicating valve group 300 of any embodiment of the present invention, so it has like the whole beneficial effects of the communicating valve group 300 of any embodiment of the present invention, and is not repeated here.

Example 10:

as shown in fig. 5, the present embodiment provides a pumping apparatus 400, and in addition to the technical features of the above-described embodiment, the present embodiment further includes the following technical features.

As shown in fig. 5 and 6, the pumping apparatus 400 further includes: the hydraulic oil supply system 100 and the pumping device 200 are driven by the hydraulic oil supply system 100. The first working oil port 320 and the second working oil port 322 of the communication valve group 300 are respectively used for being communicated with the hydraulic oil supply system 100, the third working oil port 324 of the communication valve group 300 is used for being communicated with the first oil cylinder 210, and the fourth working oil port 326 of the communication valve group 300 is used for being communicated with the second oil cylinder 220.

The usage of the communication valve block 300 of the present embodiment is as follows: when the pumping device 400 pumps at a low pressure, the rodless cavity of the first cylinder 210 and the rodless cavity of the second cylinder 220 need to be communicated. When the pumping device 400 is in a high-pressure pumping state, the valve core 310 of the communication valve group 300 needs to be closed, the first oil cylinder 210 and the second oil cylinder 220 are disconnected at intervals, when the pumping device 400 is switched to low-pressure pumping, the valve core 310 of the communication valve group 300 is opened, and the first oil cylinder 210 and the second oil cylinder 220 are communicated.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The present embodiment provides a pumping apparatus 400, and the pumping apparatus 400 includes a hydraulic oil supply system 100 and a pumping device 200. A communication valve block 300 is provided between the hydraulic oil supply system 100 and the pumping device 200. The pumping device 200 includes a first cylinder 210 and a second cylinder 220 controlled in a coordinated manner. The communication valve set 300 is used for controlling the on-off of the first oil cylinder 210 and the second oil cylinder 220.

In concrete pumping operation of the related art, two groups of parallel oil cylinders exist, and in order to realize the alternate extension and retraction of the two parallel oil cylinders, the two parallel oil cylinders are generally communicated and linked. The tail ends of the two groups of parallel oil cylinders are provided with a group of communicating valve groups which are important elements for reversing the pumping oil cylinders, mainly comprise communicating valve blocks, cartridge valves, working oil ports and control oil ports and are used for communicating rodless cavities or rod cavities of the left oil cylinder and the right oil cylinder during low-pressure pumping of pumping equipment. The problem that the communicating valve group in the related art has is: firstly, a valve body of the communicating valve group is a forged valve body, and the surface and the internal oil duct of the communicating valve group are processed by adopting traditional machining processes such as drilling, boring, milling and the like; secondly, in order to meet the oil port communication in different directions, the processing of process holes on the communicating valve group is inevitable, which causes the complexity of the composition process of the communicating valve and the increase of the cost; finally, because the machining mode is adopted, the flow channel of the communicating valve group has right-angle corners and abrupt cross sections, so that the hydraulic equipment is easy to generate vibration, noise and liquid resistance in actual engineering application, and the energy utilization rate of a hydraulic system is reduced.

Therefore, the present embodiment changes the molding manner of the valve body 302 in the communication valve set 300, and solves the problem of complicated processing steps. In addition, the communication valve block 300 of the present embodiment avoids the use of fabrication holes, thereby simplifying the manufacturing process of the communication valve block 300 and reducing the manufacturing cost thereof. Finally, the communicating valve set 300 of the present embodiment optimizes the corner connection form of the flow channel 304, and thus solves the problems of high energy consumption due to vibration, noise and liquid resistance of hydraulic equipment.

Specifically, the communication valve block 300 of the present embodiment has two main working oil ports, that is: the third working oil port 324 and the fourth working oil port 326, and the third working oil port 324 and the fourth working oil port 326 are respectively connected to oil inlets of the first oil cylinder 210 and the second oil cylinder 220 which are arranged in parallel with each other in the pumping device 200 of the pumping apparatus 400. Two system working oil ports of the communicating valve group 300 are: the first working oil port 320 and the second working oil port 322 are connected to the hydraulic oil supply system 100 for pumping hydraulic oil through hydraulic hoses, respectively.

The communication valve block 300 controls opening and closing of the working ports by controlling opening and closing of the valve element 310 by whether or not the control port 318 is open. The cartridge 310 is embodied as a cartridge.

In this embodiment, the cast valve assembly 300 may be designed according to the actual flow characteristics inside the communication valve assembly 300 and by combining the shape of the communication valve assembly 300, the shape structure of the cast valve assembly 300 may be optimized according to the actual loading requirements, and the internal flow channel 304 is formed by casting in one step. In the related technology, smooth flow channel transition is adopted at right-angle corners and abrupt change positions of cross sections in the valve group, and the assembling position mode of the cartridge valve is optimized, so that the forward and reverse circulation pressure losses are close, and the circulation capacity of the communicating valve group 300 is ensured to the maximum extent.

The working principle of the communication valve block 300 of the present embodiment is as follows: the communicating valve group 300 is used for communicating the rodless cavities of the left and right oil cylinders when the mixed pumping equipment 400 performs low-pressure pumping. In the high-pressure pumping state of the pumping device 400, the control port 318 is communicated with the pressure oil source, the valve core 310 is closed, and the third working port 324 and the fourth working port 326 are disconnected. When the pumping apparatus 400 switches to low pressure pumping, the control port 318 has no pressure oil source, the first working port 320 and the second working port 322 pressure oil opens the valve core 310, and the third working port 324 and the fourth working port 326 are connected.

In summary, the present embodiment employs an integrally cast valve body 302 and optimizes the structure of the flow passage 304 inside the valve body 302. The flow channel 304 has good through-flow capacity, pressure loss can be effectively reduced, and energy consumption is reduced. Each working oil port is connected by a high-pressure flange, so that the communicating valve group 300 can bear higher working pressure. The communication valve block 300 may be used in different operating environments by replacing different spools 310. The embodiment can protect the system from instantaneous high-pressure impact, so that the pumping system is more stable when switching the high-pressure state and the low-pressure state in the operation process.

In addition, the present embodiment may use fluid simulation software to optimize the parameters of the flow channel 304 in advance. The shape and structure of the communicating valve set 300 can be optimized according to the actual loading requirement, and the flow channel 304 is formed in one step by casting. The size of the bore of the valve core 310 of the present embodiment can be changed or adjusted according to the flow requirement of the system. Each working oil port can be replaced by a threaded connection through flange connection. The overall dimensions of the integrally cast valve body 302 can be flexibly changed depending on the loading environment.

To sum up, the utility model discloses beneficial effect does:

1. the embodiment of the utility model discloses an at least part setting of case 310 of intercommunication valves 300 is between first runner 306 and second runner 308 to on the basis of the break-make of effective control first runner 306 and second runner 308, further practice thrift the occupation space of intercommunication valves 300.

2. In the embodiment of the present invention, the valve core accommodating cavity 312 extends into the space between the first flow channel 306 and the second flow channel 308, and the included angle between the valve core accommodating cavity 312 and the first flow channel 306 is an acute angle. Thus, the present embodiment can shorten the length of the spool housing chamber 312 and the length of the spool 310, and further reduce the occupied space of the communication valve block 300.

In the present application, the terms "first", "second", "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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

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

In the description of the present specification, 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 above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. 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 communication valve block, comprising:

a valve body;

the flow channel is arranged in the valve body and comprises a first flow channel and a second flow channel;

the valve core is used for controlling the connection and disconnection of the first flow passage and the second flow passage;

and the valve core accommodating cavity is arranged in the valve core accommodating cavity, is arranged between the first flow passage and the second flow passage and is inclined relative to at least one of the first flow passage and the second flow passage.

2. The set of communication valves of claim 1,

the first flow passage comprises a first straight section and a first arc-shaped section, and the first arc-shaped section is arranged between the first straight section and the valve core accommodating cavity; and/or

The second flow passage includes a second straight section and a second arcuate section, the second arcuate section being disposed between the second straight section and the spool receiving cavity.

3. The set of communication valves of claim 1, further comprising:

the cover plate is arranged on the valve body and used for blocking the valve core accommodating cavity;

the spring is arranged between the valve core and the cover plate and is respectively connected with the valve core and the cover plate;

and the control oil port is arranged on the cover plate and is communicated with the valve core accommodating cavity.

4. The set of communication valves of claim 1,

the extending direction of the first flow channel is the same as that of the second flow channel.

5. The set of communication valves of claim 1, further comprising:

the first working oil port is arranged in the first flow passage;

the second working oil port is arranged in the second flow passage;

the third working oil port is arranged in the first flow passage;

the fourth working oil port is arranged in the second flow passage;

the first working oil port and the second working oil port are arranged on any side of the communicating valve group, and the third working oil port and the fourth working oil port are arranged on any other side of the communicating valve group.

6. The set of communication valves of claim 5,

the first flow channel comprises a first straight section and a third arc-shaped section, and the third arc-shaped section is arranged between the first straight section and the first working oil port; or

The first flow channel comprises a first straight section and a fourth arc-shaped section, and the fourth arc-shaped section is arranged between the first straight section and the third working oil port; or

The second flow channel comprises a second straight section and a fifth arc-shaped section, and the fifth arc-shaped section is arranged between the second straight section and the second working oil port; or

The second flow passage comprises a second straight section and a sixth arc section, and the sixth arc section is arranged between the second straight section and the fourth working oil port.

7. The set of communication valves according to any one of claims 1 to 6, further comprising:

one or more flange structures disposed on the valve body.

8. The set of communication valves of any one of claims 1 to 6, wherein the valve body comprises a cast valve body.

9. A pumping apparatus, comprising:

the pumping device comprises a first oil cylinder and a second oil cylinder;

the set of communication valves of any one of claims 1 to 8, the set of communication valves being disposed between the first cylinder and the second cylinder.

10. The pumping apparatus of claim 9, further comprising:

the pumping device is driven by the hydraulic oil supply system to work;

the first working oil port and the second working oil port of the communicating valve group are respectively used for being communicated with the hydraulic oil supply system, the third working oil port of the communicating valve group is used for being communicated with the first oil cylinder, and the fourth working oil port of the communicating valve group is used for being communicated with the second oil cylinder.