WO2021203926A1

WO2021203926A1 - Valve body assembly and combined valve having same

Info

Publication number: WO2021203926A1
Application number: PCT/CN2021/081184
Authority: WO
Inventors: 俞舟; 冯忠波; 康志军; 熊匀均; 邵巨灿; 杨剑
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2020-04-10
Filing date: 2021-03-16
Publication date: 2021-10-14
Also published as: JP2023520282A

Abstract

A valve body assembly and a combined valve having same. The valve body assembly comprises: a housing (10), the housing (10) comprising a first channel and a second channel which are in communication with each other, and the inner diameter of the middle portion of the first channel is smaller than the inner diameter of the middle portion of the second channel; a filtering member (20) provided in the first channel, the filtering member (20) being configured to filter a fluid; and a valve core assembly (30) movably provided in the second channel, the valve core assembly (30) being located downstream of the filtering member (20) in the fluid flow direction, and the valve core assembly (30) having a plugging position for plugging the second channel, and an open position. The valve body assembly can solve the problem in the prior art that a check valve is easy to be blocked.

Description

Valve body assembly and combined valve with the same

This application claims the priority of the patent application filed to the State Intellectual Property Office of China on April 10, 2020, the application number is 202010280920.9, and the invention name is "Combined Valve", and it is submitted to the State Intellectual Property Office of China on April 10, 2020. The application number is 202010280918.1, the priority of the patent application with the name of the invention "combined valve", submitted to the State Intellectual Property Office of China on April 10, 2020, the application number is 202020529193.0, the name of the invention is "valve body components and The priority of the patent application for its "combined valve", filed to the State Intellectual Property Office of China on April 10, 2020, the application number is 202020529462.3, the title of the invention is "combined valve", and the priority of the patent application on April 10, 2020 Priority of the patent application filed to the State Intellectual Property Office of China with the application number 202020529325.X and the invention title "One-way valve and its combined valve" on the 10th.

Technical field

The present application relates to the technical field of valve bodies, and in particular to a valve body assembly and a combined valve having the same.

Background technique

At present, the existing one-way valve structure does not have a filtering structure, so that impurities in the fluid easily block the valve port during use, causing the one-way valve to fail and affecting the normal use of the one-way valve.

Summary of the invention

The present application provides a valve body assembly and a combined valve having the same, so as to solve the problem of easy blockage of the one-way valve in the prior art.

According to one aspect of the present application, there is provided a valve body assembly. The valve body assembly includes a housing. The housing includes a first channel and a second channel communicating with each other. Inner diameter; the filter element is arranged in the first channel, and the filter element is used to filter the fluid; the valve core assembly is movably arranged in the second channel, the valve core assembly is located downstream of the filter element along the fluid flow direction, the valve core The assembly has a blocking position for blocking the second channel and an open position.

Further, the housing includes: a filter tube, the filter tube has a first channel, and the filter is arranged in the filter tube; a valve tube, the valve tube has a second channel, the filter tube is connected to the valve tube, and the valve core assembly is movably arranged in the valve Inside the tube.

Further, the housing further includes: a valve cover, the valve cover is arranged between the filter tube and the valve tube, one end of the valve cover is connected to the filter tube, the other end of the valve cover is connected to the valve tube, and the filter tube is connected to the valve tube through the valve cover Connected.

Further, the casing is an integrally formed structure.

Further, the valve body assembly further includes a first seal, the first seal is arranged upstream of the valve core assembly, and the valve core assembly cooperates with the first seal to block the second passage.

Further, the second channel has an inlet end and an outlet end that are oppositely arranged, and the valve core assembly includes: a piston, which is movably arranged in the second channel; a second seal, which is arranged at the end of the piston near the inlet end; and a gasket. , Set on the piston, the gasket is used to fix the position of the second seal on the piston.

Further, the piston is provided with a guide hole, and the valve core assembly further includes: a guide post fixedly arranged in the second channel and located downstream of the piston, one end of the guide post is inserted in the guide hole, and the guide post is used to perform Guide, the guide column has a balance hole, one end of the balance hole communicates with the guide hole, and the other end of the balance hole communicates with the outlet end; the positioning piece, the positioning piece is arranged in the second channel, and the end of the guiding column away from the piston is connected with the positioning piece Fixed connection, and the positioning member is used to fix the position of the guide column in the second channel.

Further, the inner diameter of the inlet end of the second channel gradually increases toward the fluid flow direction, the inner diameter of the outlet end of the second channel gradually decreases toward the fluid flow direction, and the inner diameters of the inlet end and the outlet end are both smaller than the inner diameter of the middle of the second channel.

Further, the filter element includes: a filter screen; a fixing frame, which is annularly arranged on the periphery of the filter screen, and the fixing frame is fixedly connected with the inner wall of the first channel.

According to another aspect of the present application, a combination valve is provided. The combination valve includes: a pilot valve; a main valve, which communicates with the inside of the main valve through a capillary tube; On one side of the valve, the outlet pipe is located on the other side of the main valve; the valve body assembly is connected with the inlet pipe, and the valve body assembly is the valve body assembly provided above.

Applying the technical solution of the present application, the valve body assembly includes a housing, a filter element and a valve core assembly, wherein the valve core assembly is arranged downstream of the filter element. By providing the filter element, the fluid in the housing can be filtered, avoiding excessive impurities from flowing to the valve core assembly and causing channel blockage, ensuring the normal use of the valve body and prolonging the service life of the valve core assembly.

Description of the drawings

The drawings of the specification forming a part of the application are used to provide a further understanding of the application, and the exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

FIG. 1 shows a schematic structural diagram of a valve body assembly provided in Embodiment 1 of the present application;

Fig. 2 shows a schematic diagram of the structure of the valve core assembly in Fig. 1;

Fig. 3 shows a schematic diagram of the structure of the guide post in Fig. 1;

Fig. 4 shows a schematic diagram of the structure of the positioning member in Fig. 1;

FIG. 5 shows a schematic structural diagram of the valve body assembly provided in the second embodiment of the present application in an open state;

FIG. 6 shows a schematic structural diagram of the valve body assembly provided in the second embodiment of the present application in a blocked state;

FIG. 7 shows a schematic structural diagram of a combination valve provided in Embodiment 3 of the present application;

FIG. 8 shows a schematic structural diagram of a combination valve provided according to the fourth embodiment of the present application;

FIG. 9 shows another structural schematic diagram of the combination valve provided according to the fourth embodiment of the present application;

Figure 10 shows a cross-sectional view of a connector provided according to a fourth embodiment of the present application;

FIG. 11 shows a schematic structural diagram of a combination valve provided in Embodiment 5 of the present application;

FIG. 12 shows a schematic structural diagram of a combination valve provided according to the sixth embodiment of the present application;

FIG. 13 shows another structural schematic diagram of the combination valve provided according to the sixth embodiment of the present application;

Fig. 14 shows a schematic diagram of the structure of the connecting piece in Fig. 12;

Figure 15 shows a cross-sectional view of the connector in Figure 12;

Fig. 16 shows a schematic structural diagram of a connecting piece provided in a seventh embodiment of the present application;

Figure 17 shows a cross-sectional view of the connector in Figure 16;

FIG. 18 shows a schematic structural diagram of a combination valve provided in the eighth embodiment of the present application;

Fig. 19 shows another structural schematic diagram of the combination valve in Fig. 18;

FIG. 20 shows a schematic structural diagram of a combination valve provided in the ninth embodiment of the present application;

FIG. 21 shows another structural schematic diagram of the combination valve in FIG. 20;

Figure 22 shows a schematic structural diagram of the one-way valve provided in the present application.

Among them, the above drawings include the following reference signs:

10. Shell; 11. Filter tube; 12. Valve tube; 13. Valve cover;

20. Filter; 21. Filter; 22. Fixing frame;

30. Valve core assembly; 31. Piston; 311. Guide hole; 312. Connecting protrusion; 32. Second seal; 33. Gasket; 34. Guide column; 341. Balance hole; 35. Positioning member; 351. Positioning plate; 3511, connecting hole; 352, extension end; 30a, one-way valve; 30b, diversion structure; 30c, valve body; 301, inlet end; 302, outlet end; 303, valve cover; 304, main body;

40. The first seal;

50. Main valve; 51. Inlet takeover; 52. Outlet take over;

60. Detection parts; 70. Connection parts; 71. Inlet; 72. Outlet; 73. Annular boss; 81. Pilot valve; 82. Capillary tube.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the application and its application or use. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

As shown in FIG. 1, an embodiment of the present application provides a valve body assembly. The valve body assembly includes a housing 10, a filter 20 and a valve core assembly 30. Wherein, the housing 10 includes a first channel and a second channel communicating with each other, and the inner diameter of the middle part of the first channel is smaller than the inner diameter of the middle part of the second channel. The filter element 20 is disposed in the first channel, and the filter element 20 is used to filter the fluid. The spool assembly 30 is movably disposed in the second passage, and the spool assembly 30 is located downstream of the filter element 20 along the fluid flow direction. The spool assembly 30 has a blocking position for blocking the second passage and an open position. The filter element 20 is arranged upstream of the valve core assembly 30, so that the filter element 20 can be used to filter the fluid flowing to the valve core assembly 30 to prevent impurities from blocking the valve core assembly 30 and ensure the normal operation of the valve core assembly 30. Set the inner diameter of the middle part of the first passage to be smaller than the inner diameter of the middle part of the second passage, so as to make up for the space occupied by the valve core assembly 30 in the second passage, reduce the resistance to the fluid caused by the valve core assembly 30, and ensure the fluid It flows normally in the housing 10.

With the valve body assembly provided in this embodiment, the valve body assembly includes a housing 10, a filter element 20 and a valve core assembly 30, wherein the valve core assembly 30 is arranged downstream of the filter element 20. By providing the filter element 20, the fluid in the housing 10 can be filtered, avoiding excessive impurities flowing to the valve core assembly 30 and causing channel blockage, ensuring the normal use of the valve body, and prolonging the service life of the valve core assembly. In addition, the above-mentioned device has a simple structure, which integrates filtration and one-way functions to form a multifunctional valve body structure.

Wherein, the housing 10 may be a split structure or an integral structure. In this embodiment, the housing 10 includes: a filter tube 11 and a valve tube 12. Wherein, the filter tube 11 has a first channel, and the filter element 20 is arranged in the filter tube 11. The valve tube 12 has a second passage, the filter tube 11 is connected to the valve tube 12, and the valve core assembly 30 is movably arranged in the valve tube 12. Through the above structure, the installation of the filter element 20 and the valve core assembly 30 can be facilitated.

Specifically, the housing 10 further includes a valve cover 13, which is arranged between the filter tube 11 and the valve tube 12. One end of the valve cover 13 is connected to the filter tube 11, and the other end of the valve cover 13 is connected to the valve tube 12. , The filter tube 11 communicates with the valve tube 12 through the valve cover 13. Wherein, the valve cover 13 can be welded to the filter tube 11 and the valve tube 12, or riveted. The valve cover 13 can further facilitate the installation of the valve core assembly 30 in the valve tube 12 and provide a connection structure for the filter tube 11 and the valve tube 12.

As shown in FIG. 2, the second passage has an inlet end 301 and an outlet end 302 opposite to each other, and the valve core assembly includes a piston 31, a second seal 32 and a gasket 33. Wherein, the piston 31 is movably arranged in the second passage, and the inlet end 301 is blocked by the piston 31. The second sealing element 32 is arranged at the end of the piston 31 close to the inlet end 301, and the sealing performance of the piston 31 to the inlet end 301 can be improved by providing the second sealing element 32. The gasket 33 is disposed on the piston 31, and the gasket 33 is used to fix the position of the second sealing member 32 on the piston 31.

Specifically, the end of the piston 31 close to the inlet end 301 is provided with a connecting protrusion 312, the second sealing member 32 and the gasket 33 are sleeved on the connecting protrusion 312, and the gasket 33 is located close to the second sealing member 32. One side of the inlet end 301. By providing the connecting protrusion 312, a connecting structure can be provided for the second sealing member 32 and the gasket 33, and it is convenient to arrange the second sealing member 32 at the end of the piston 31.

As shown in Figures 2 and 3, the piston 31 is provided with a guide hole 311, and the valve core assembly further includes a guide post 34, which is fixedly arranged in the second passage and is located downstream of the piston 31. One end of the guide post 34 The guide post 34 is used to guide the piston 31. The guide post 34 has a balance hole 341. One end of the balance hole 341 communicates with the guide hole 311, and the other end of the balance hole 341 communicates with the outlet end.

As shown in FIG. 3, the guide post 34 has a stepped structure, and the diameter of the end of the guide post 34 close to the outlet end is smaller than the middle diameter of the guide post 34, which facilitates the connection of the guide post 34 and the positioning member 35. The balance hole 341 may be a straight hole or a stepped hole.

As shown in FIG. 22, the valve body 30c includes a valve cover 303 and a main body 304. The valve cover 303 and the main body 304 are connected to each other. The valve cover 303 and the main body 304 form a second passage. The valve cover 303 has an inlet end 301. By arranging the valve body 30c into two parts, it is convenient to install the piston 31 and the positioning member 35 in the valve body 30c during installation. After the internal components are fixed, the valve cover 303 can be installed on the main body 304.

Through the above structure, the guide post 34 can be used to guide the piston 31 so that the piston 31 moves smoothly in the second passage; the balance hole 341 on the guide post 34 can be used to connect the guide hole 311 with the outlet end, which is On the low pressure side, the guide hole 311 can also be made low pressure, which can reduce the resistance to the piston 31, facilitate the movement of the piston 31 between the inlet end and the outlet end, and ensure the normal operation of the valve body.

Wherein, the valve body assembly further includes a positioning member 35, the positioning member 35 is arranged in the cavity, the end of the guide column 34 away from the piston 31 is fixedly connected with the positioning member 35, the positioning member 35 is used to fix the guide column 34 in the second channel Location within. By providing the positioning member 35, the guide post 34 can be easily fixed in the second channel.

As shown in FIG. 4, the positioning member 35 includes a positioning plate 351 and a plurality of extension ends 352. The middle of the positioning plate 351 has a connecting hole 3511, and the end of the guide post 34 penetrates the connecting hole 3511. A plurality of extending ends 352 are annularly arranged on the periphery of the positioning plate 351, and the positioning plate 351 is connected to the inner wall of the second channel through the plurality of extending ends 352. Specifically, the guide post 34 and the positioning plate 351 can be riveted or welded. The plurality of extension ends 352 can be fixedly connected to the housing 10 by means of pressing rollers, or can be connected by means of welding or fasteners. Through the above structure, it can be ensured that the positioning member 35 fixes the guide post 34, and a larger circulation area can be provided for fluid flow, and the resistance of the positioning member 35 to the fluid can be reduced.

Specifically, the inner diameter of the inlet end 301 gradually increases in the direction toward the outlet end 302, and the diameter of the end of the piston assembly close to the inlet end 301 gradually decreases toward the outlet end 302. The fluid is diverted through the above structure, so that the fluid can flow along the inclined plane formed by the above structure, and the turbulence of the fluid can be avoided in the flow process.

In this embodiment, the inner diameter of the inlet end of the second channel gradually increases toward the fluid flow direction, the inner diameter of the outlet end of the second channel gradually decreases toward the fluid flow direction, and the inner diameters of the inlet end and the outlet end are both smaller than the middle of the second channel The inner diameter. Specifically, both ends of the second channel are configured as bell mouth structures to buffer and guide the fluid. Setting the second passage as a structure with small ends and a large middle can reduce the resistance to the fluid due to the valve core assembly provided in the middle of the second passage, so that the fluid can flow smoothly in the valve body.

Wherein, the filter element 20 includes: a filter screen 21 and a fixing frame 22. Wherein, the fixing frame 22 is annularly arranged on the periphery of the filter screen 21, and the fixing frame 22 is fixedly connected with the inner wall of the first channel. By providing the fixing frame 22, the filter screen 21 can be easily fixed in the first channel, and the fixing frame 22 can be fixed in the first channel by welding, riveting or pressing rollers.

As shown in Figures 5 and 6, the second embodiment of the present application provides a valve body assembly. The difference between the second embodiment and the first embodiment is that in this embodiment, the housing 10 is an integrally formed structure. The installation steps of the device can be simplified and the installation efficiency can be improved.

Wherein, in this embodiment, the valve body assembly further includes a first seal 40, which is arranged upstream of the valve core assembly 30, and the valve core assembly 30 cooperates with the first seal 40 to block the second seal 40. aisle. By providing the first sealing member 40, the sealing performance of the valve core assembly 30 in blocking the second passage can be further improved.

As shown in FIG. 7, the third embodiment of the present application provides a combined valve, which includes a pilot valve, a main valve 50 and a valve body assembly. The pilot valve communicates with the main valve 50 through a capillary tube. The main valve 50 is equipped with an inlet connection pipe 51 and an outlet connection pipe 52. The inlet connection pipe 51 is located on one side of the main valve 50 and the outlet connection pipe 52 is located on the other side of the main valve 50. The valve body assembly is connected with the inlet connection pipe 51, and the valve body assembly is the valve body assembly provided in the above embodiment.

By arranging the filter element in the device, the fluid in the housing can be filtered, avoiding excessive impurities from flowing to the valve core assembly and causing channel blockage, ensuring the normal use of the valve body and prolonging the service life of the valve core assembly. Setting the valve body assembly on the combined valve can realize the functions of filtering and one-way, which enriches the functions of the combined valve.

As shown in FIGS. 8 and 9, the fourth embodiment of the present application provides a combined valve, which includes a pilot valve 81, a main valve 50, and a one-way valve 30a. The pilot valve 81 communicates with the main valve 50 through a capillary tube 82, and the pilot valve 81 is used to control the main valve 50. The main valve 50 has a cylindrical hollow structure. The main valve 50 is provided with a spool. The main valve 50 is equipped with an inlet pipe 51 and an outlet pipe 52. The inlet pipe 51 is located on one side of the main valve 50, and the outlet pipe 52 is located on the main valve 50. On the other side, the inlet connector 51 and the outlet connector 52 can have sufficient space to facilitate subsequent connections to other pipelines and equipment. One end of the one-way valve 30a is connected with the inlet pipe 51. The provision of the one-way valve 30a can avoid fluid backflow. Wherein, the central axis of the one-way valve 30a is located in the plane formed by the central axis of the main valve 50 and the outlet connecting pipe 52 or is arranged parallel to the plane, and the total length of the one-way valve 30a is set to be no greater than the main valve 50. The farthest distance from the end of the outlet to the center axis of the outlet pipe 52. With this arrangement, the above-mentioned components can be arranged neatly, and the space occupied by the device can be reduced. Specifically, in this embodiment, a plurality of outlet nozzles 52 are installed on the main valve 50, and the plurality of outlet nozzles 52 are arranged side by side on the main valve 50, and the total length of the one-way valve 30a is not greater than the end of the main valve 50 and The distance from the centerline axis of the outlet nozzle 52 farthest from the end.

The combined valve provided by this embodiment includes a pilot valve 81, a main valve 50 and a one-way valve 30a. The central axis of the one-way valve 30a is formed by the central axis of the main valve 50 and the outlet connecting pipe 52. It is arranged in a plane or parallel to the plane, and the total length of the one-way valve 30a is set to be no greater than the farthest distance from the end of the main valve 50 to the central axis of the outlet nozzle 52. In this way, the one-way function can be realized by using the one-way valve 30a, and the one-way valve 30a, the inlet connection pipe 51 and the outlet connection pipe 52 can be reasonably placed, so that the device has multiple functions and is more compact and saves space. Through this technical solution, the valve body function can be enriched, the integration of the device can be improved, and the device can be made more compact.

Wherein, the combined valve further includes a filter element 20, which is connected to the other end of the one-way valve 30a. By providing the filter element 20, the fluid can be filtered, so as to prevent excessive impurities from entering the valve body or subsequent equipment and affecting the normal operation of the valve body and the equipment. The inlet connecting pipe 51 may be a straight pipe or an elbow pipe. In this embodiment, the inlet connection pipe 51 is set as an elbow, and the connection direction of the filter element 20 and the one-way valve 30a is the same as the axial direction of the main valve 50. With this arrangement, the occupied size in the vertical direction can be reduced, the space around the main valve 50 can be fully utilized, and the arrangement of components can be more compact.

Specifically, in this embodiment, the combined valve further includes a detection element 60, and the detection element 60 is arranged on the side wall of the inlet nozzle 51 and/or the outlet nozzle 52. By setting the detecting member 60, the relevant data of the fluid can be detected, for example: the flow rate, flow velocity, pressure, etc. of the fluid. This facilitates real-time monitoring of the fluid.

Among them, the detection component 60 can be directly connected with the inlet nozzle 51 or the outlet nozzle 52, or indirectly connected with the nozzle via an auxiliary component.

As shown in FIG. 10, in this embodiment, the combined valve further includes a connecting piece 70, which is arranged on the side wall of the inlet nozzle 51 and/or the outlet nozzle 52, and the connecting piece 70 has an inlet 71 and an outlet 72, The inlet 71 is connected to the inlet connecting pipe 51, the detecting member 60 is connected to the outlet 72, and the detecting member 60 is connected to the connecting pipe through the connecting piece 70. Through the above method, it can be avoided that temporary holes are punched on the connection pipe when the inspection is temporarily required. By providing the connecting piece 70, it is convenient for the detecting piece 60 to be connected with the connecting pipe at any time.

Specifically, in this embodiment, there are multiple outlets 72, and there are also multiple detection elements 60. The detection elements 60 and the outlets 72 are arranged in a one-to-one correspondence. The integration of components can improve the convenience of connection.

Wherein, the connecting piece 70 is arranged on the inlet connection pipe 51, the connecting piece 70 has a plurality of outlets 72, one end of the capillary tube 82 communicates with the pilot valve 81, and the other end of the capillary tube 82 communicates with one of the outlets 72. Through the above method, it is possible to avoid extra holes in the inlet nozzle 51 to connect the capillary 82, which further improves the convenience of component connection, and can reduce the operation steps, reduce the installation time, and improve the installation efficiency.

Specifically, the connecting member 70 has a positioning structure, and the positioning structure is arranged at the inlet 71 and/or the outlet 72. Such a design can facilitate the connection of the connecting piece 70 with other pipelines, ensure that the pipelines are installed in place, and improve the stability of the pipeline connection.

Wherein, an annular boss 73 can be provided on the periphery of the inlet 71, and positioning is performed by the annular boss 73.

In this embodiment, the connecting member 70 has a connecting hole, and the connecting hole forms an outlet 72. The connecting hole can be designed as a stepped hole, and the stepped surface is used to form a positioning structure so that the end of the pipeline abuts against the stepped surface. Avoid the end of the pipeline from extending too deep or too shallow to ensure the reliability of the connection.

In this embodiment, the one-way valve 30a includes: a valve body 30c, a piston 31 and a guide assembly. Wherein, the valve body 30c has a flow channel, one end of the valve body 30c is connected to the filter element 20, and the other end of the valve body 30c is connected to the inlet connection pipe 51. The piston 31 is movably arranged in the valve body 30c, and the piston 31 has a blocking position for blocking the flow passage and an open position for opening the flow passage. The guide assembly is arranged in the valve body 30c, and the guide assembly is used to guide the piston 31. By providing the guide assembly, it is possible to ensure the stable and directional movement of the piston 31 in the valve body 30c.

Specifically, the piston 31 has a guide hole, and the guide assembly includes a guide post 34 and a positioning member 35. Wherein, the guide post 34 is arranged in the valve body 30c, the guide post 34 is inserted into the guide hole, and the guide post 34 is at least partially inserted into the guide hole to move the piston 31 along the axis of the guide post 34. The guide post 34 has balance In the hole 341, one end of the balance hole 341 is communicated with the guide hole, and the other end of the balance hole 341 is communicated with the circulation channel. The positioning member 35 is arranged in the valve body 30c, and the position of the guide column 34 in the valve body 30c can be fixed by the positioning member 35.

As shown in Figure 8, the left port of the valve body 30c is the inlet side, the right port is the outlet side, the inlet side is high pressure, and the outlet side is low pressure. By setting the balance hole 341, the guide hole can be connected to the low pressure, which is convenient for fluid flow in During the flow, the piston 31 is pushed to move to the right, which reduces the obstruction caused by the piston 31 when the fluid flows in the forward direction, and reduces the flow blocking effect.

Wherein, the inner wall of the valve body 30c and/or the piston 31 is provided with a flow guiding structure 30b. By providing the flow guiding structure 30b, the turbulence of the fluid in the valve body 30c can be reduced, and the obstruction to the fluid can be reduced.

Specifically, the valve body 30c has a first end and a second end that are opposed to each other. The inner diameter of the first end gradually increases from the first end to the second end, so that the inner wall of the first end forms a diversion slope for diversion. . The piston 31 has a plugging end and a connecting end that are arranged oppositely, the plugging end is arranged close to the first end, and the outer diameter of the plugging end gradually decreases from the plugging end to the connecting end. With this arrangement, the outer wall of the plugging end also forms a diversion inclined surface, so that the fluid can pass through the piston 31 smoothly.

As shown in FIG. 11, the fifth embodiment of the present application provides a combined valve. The difference from the fourth embodiment is that there is no connecting member in this embodiment, and the capillary tube 82 and the detecting member 60 are directly connected to the inlet nozzle 51. Through the above structure, the number of device parts can be reduced.

Through the technical solution provided by the present application, the filter element 20, the one-way valve 30a and the detection element 60 are provided on the combined valve, which can realize the functions of filtering, one-way and detecting fluid; and through reasonable arrangement, the main valve 50 can be fully utilized. In the surrounding space, a compact combination valve is constructed, so that the combination valve can meet the development requirements of miniaturization and integration.

As shown in FIG. 12 to FIG. 14, the sixth embodiment of the present application provides a combined valve, which includes a connecting piece 70. The connecting piece 70 is arranged on the side wall of the inlet connecting pipe 51 and/or the outlet connecting pipe 52. The connecting piece 70 has an inlet 71 and at least one outlet 72. The inlet 71 of the connecting piece 70 is used to communicate with the inlet connecting pipe 51 or the outlet connecting pipe 52. , At least one outlet 72 is used to communicate with the detection element 60. The connecting piece 70 can be arranged on the inlet connecting pipe 51 or the outlet connecting pipe 52 as required, or on both the inlet connecting pipe 51 and the outlet connecting pipe 52. By providing the connecting piece 70, it is convenient to connect with the detection piece 60, thereby facilitating the combination The valve fluid is detected in real time.

Using the combined valve provided in this embodiment, the connecting piece 70 is arranged on the side wall of the inlet connecting pipe 51 and/or the outlet connecting pipe 52. The connecting piece 70 has an inlet and at least one outlet, and the at least one outlet is used to communicate with the detecting piece 60. By arranging the connecting piece 70 on the valve body, the reliability of the connection with the detecting piece 60 can be improved, and when the detecting piece 60 is installed, there is no need to punch holes, which reduces the installation steps and improves the installation efficiency.

Specifically, the combined valve is a four-way valve, which includes an inlet port 51 and two outlet ports 52. The main valve 50 has a valve core, and the valve core is operated to control the flow of fluid from a certain outlet port 52.

In this embodiment, the connecting piece 70 communicates with the inlet connector 51, the connecting piece 70 includes a plurality of outlets 72, one end of the capillary tube 82 communicates with the pilot valve 81, and the other end of the capillary tube 82 communicates with one of the outlets 72. The connecting piece 70 and the capillary 82 are used to communicate the pilot valve 81 and the main valve 50, which reduces the amount of holes punched on the main valve 50 and facilitates pipeline connection. Using the connecting member 70 to connect the capillary 82 and the detecting member 60 can improve the integration of components.

Specifically, there are multiple outlets connected to the detection element 60, and the multiple outlets 72 are provided to facilitate the connection with the multiple detection elements 60 to perform different data detection on the valve body.

Wherein, in the embodiment where the connecting member 70 is provided with multiple outlets 72, the diameters of the multiple outlets 72 are the same, which can ensure that the detection conditions of each outlet 72 are the same, and the accuracy of the detection result is ensured.

As shown in FIG. 15, the connecting piece 70 has a cylindrical structure, the inlet 71 of the connecting piece 70 is arranged at one end of the connecting piece 70, and the outlet 72 of the connecting piece 70 is arranged on the side wall of the connecting piece 70 and the other end of the connecting piece 70. .

Specifically, the connecting member 70 has a communicating cavity. Both ends of the connecting member 70 and the side wall of the connecting member 70 are provided with connecting holes, and the connecting holes are communicated with the communicating cavity. The connecting hole at one end of the connecting member 70 forms an inlet 71 , The connecting hole at the other end of the connecting piece 70 and on the side wall forms an outlet 72.

Wherein, the axis of the inlet 71 coincides with the axis of the outlet 72 located at the end of the connector 70, which can reduce the collision of the fluid with the inner wall during the process of flowing out of the end outlet 72 and ensure the stability of fluid flow.

Further, a plurality of outlets 72 are provided on the side wall of the connecting member 70, and the plurality of outlets 72 on the side wall of the connecting member 70 are arranged symmetrically with respect to the axis of the inlet 71. Through the above arrangement, turbulent flow of the fluid can be avoided, and the stability of the fluid flow can be ensured.

Wherein, the connecting member 70 is provided with an annular boss 73, and the annular boss 73 is arranged along the periphery of the inlet 71. By providing the annular boss 73, the annular boss 73 can be extended into the connecting hole of the inlet nozzle 51, so that the connecting piece 70 is connected with the inlet nozzle 51.

Specifically, the connecting member 70 is provided with a connecting hole, the connecting hole forms an outlet 72, the connecting hole is a stepped hole, and the diameter of the connecting hole near the outside of the connecting member 70 is larger than the diameter of the connecting hole near the inside of the connecting member 70. By setting the stepped hole, the effect of assembly and positioning can be achieved. When the external connecting pipe is connected to the connecting hole, the end of the connecting pipe can be abutted with the stepped surface in the stepped hole, and then it can be installed in place, avoiding the connecting pipe being inserted too deeply Or too shallow, affecting the connection between the two.

Among them, in order to facilitate the connection, the combined valve can also be provided with a copper connector, and the copper connector is provided at the outlet 72. In order to ensure the connection strength of the connecting piece 70, the connecting piece 70 can be made of stainless steel, the copper connection pipe and the connection piece 70 can be connected by riveting, and the detecting piece 60 and the capillary tube 82 are connected with the copper connection pipe at the outlet 72.

Specifically, the outer diameter of the copper nozzle is adapted to the maximum diameter of the stepped hole, so as to use the stepped hole for assembly and positioning.

As shown in FIG. 16 and FIG. 17, in the seventh embodiment provided by the present application, the difference from the sixth embodiment is that the outlet 72 on the connecting member 70 is arranged at a different position. In this embodiment, the connecting member 70 has a cylindrical structure, the inlet 71 of the connecting member 70 is arranged at one end of the connecting member 70, and the multiple outlets 72 of the connecting member 70 are all arranged at the other end of the connecting member 70.

Specifically, the plurality of outlets 72 are symmetrically arranged about the axis of the inlet 71. In this way, the turbulence of the fluid in the connecting member 70 can be reduced, and the stability of the fluid flow can be ensured.

With the combined valve provided in the present application, the connecting piece 70 is arranged on the inlet nozzle 51, and the outlet on the connecting piece 70 is used to connect the detecting piece 60, which facilitates installation and connection, reduces installation steps, and uses the connecting piece 70 to connect the capillary 82 , Can reduce the number of punching holes and improve the integration of parts.

As shown in FIGS. 8 and 9, the inlet connector 51 has a first section and a second section that are connected to each other, the first section and the second section have an angle, and the first section is connected with the one-way valve 30a. The specific angle can be set according to actual needs to avoid interference with other components.

Wherein, in this embodiment, the axis of the filter element 20, the axis of the one-way valve 30a, and the axis of the port of the first section coincide with each other. Through the above arrangement, the filter element 20, the one-way valve 30a, and the first-stage port can be located on the same straight line, so that the valve body has multiple functions, and the occupied space is reduced as much as possible.

In this embodiment, the axis of the inlet nozzle 51, the axis of the main valve 50, and the axis of the outlet nozzle 52 are all on the same plane. Through the above solution, the filter element 20, the one-way valve 30a, the inlet nozzle 51, and the outlet nozzle 52 can be reasonably placed, so that the device has multiple functions and is more compact, and saves space. Through this technical solution, the valve body function can be enriched, the integration of the device can be improved, and the device can be made more compact.

As shown in Figures 9 and 10, in this embodiment, the combined valve further includes a connecting piece 70, which is arranged on the side wall of the inlet nozzle 51 and/or the outlet pipe 52, and the connecting piece 70 has an inlet 71 and The outlet 72, the inlet 71 are connected to the inlet connecting pipe 51, the detecting piece 60 is connected to the outlet 72, and the detecting piece 60 is connected to the connecting pipe through the connecting piece 70. Through the above method, it can be avoided that temporary holes are punched on the connection pipe when the inspection is temporarily required. By providing the connecting piece 70, it is convenient for the detecting piece 60 to be connected with the connecting pipe at any time.

In this embodiment, the connection between the inlet nozzle 51 and the main valve 50 does not coincide with the centerline of the main valve 50 in the radial direction. This arrangement can prevent the fluid flowing into the main valve 50 from the inlet nozzle 51 from directly impacting the spool in the middle of the main valve 50 and reduce the resistance to the fluid.

In this embodiment, the one-way valve 30a includes: a valve body 30c, a piston 31 and a guide assembly. Wherein, the valve body 30c has a flow channel, one end of the valve body 30c is connected to the filter element 20, and the other end of the valve body 30c is connected to the inlet connection pipe 51. The piston 31 is the aforementioned valve core. The piston 31 is movably arranged in the valve body 30c. The piston 31 has a blocking position for blocking the flow passage and an open position for opening the flow passage. The guide assembly is arranged in the valve body 30c, and the guide assembly is used to guide the piston 31. By providing the guide assembly, it is possible to ensure the stable and directional movement of the piston 31 in the valve body 30c.

As shown in Figures 18 and 19, the eighth embodiment of the present application provides a combined valve. In the present application, the axis of the main valve 50 and the axis of the outlet pipe 52 are located on the same plane, and the axis of the first section has a clamp between the axis of the first section and the plane. Horn.

Specifically, in this embodiment, the axis of the first section is perpendicular to the plane where the axis of the main valve 50 and the axis of the outlet pipe 52 are located. The above structure can also reduce the size of the entire device in the vertical direction and make the structure compact.

As shown in FIGS. 20 and 21, the ninth embodiment of the present application provides a combined valve. In the present application, the axis of the main valve 50 and the axis of the outlet pipe 52 are located on the same plane, and the axis of the first section is parallel to the plane. Specifically, the end of the first section extends to the side where the outlet pipe 52 of the main valve 50 is located, which can further reduce the size of the device in the vertical direction and make the device more compact.

It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and/or "including" are used in this specification, they indicate There are features, steps, operations, devices, components, and/or combinations thereof.

Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the authorization specification. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in the following figures.

In the description of this application, it needs to be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" and other directions indicate the orientation Or positional relationship is usually based on the positional or positional relationship shown in the drawings, which is only used to facilitate the description of the application and simplify the description. Unless otherwise stated, these positional words do not indicate or imply the pointed device or element It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the scope of protection of the present application; the orientation word "inside, outside" refers to the inside and outside relative to the contour of each component itself.

For ease of description, spatial relative terms can be used here, such as "above", "above", "above the surface", "above", etc., to describe as shown in the figure Shows the spatial positional relationship between one device or feature and other devices or features. It should be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the drawing is turned upside down, then a device described as "above other devices or structures" or "above other devices or structures" will then be positioned as "below the other devices or structures" or "on Under other devices or structures". Thus, the exemplary term "above" may include both orientations "above" and "below". The device can also be positioned in other different ways (rotated by 90 degrees or in other orientations), and the relative description of the space used here will be explained accordingly.

In addition, it should be noted that the use of terms such as “first” and “second” to define parts is only for the convenience of distinguishing the corresponding parts. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood. To limit the scope of protection of this application.

The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A valve body assembly, wherein the valve body assembly includes:

A housing (10), the housing (10) includes a first channel and a second channel communicating with each other, and the inner diameter of the middle of the first channel is smaller than the inner diameter of the middle of the second channel;

The filter element (20) is arranged in the first channel, and the filter element (20) is used to filter fluid;

The spool assembly (30) is movably arranged in the second passage, the spool assembly (30) is located downstream of the filter element (20) along the fluid flow direction, and the spool assembly (30) There is a blocking position for blocking the second channel and an open position for opening the second channel.
The valve body assembly according to claim 1, wherein the housing (10) comprises:

A filter tube (11), the filter tube (11) has the first channel, and the filter element (20) is arranged in the filter tube (11);

The valve tube (12), the valve tube (12) has the second passage, the filter tube (11) is connected with the valve tube (12), and the valve core assembly (30) is movably arranged at Inside the valve tube (12).
The valve body assembly according to claim 2, wherein the housing (10) further comprises:

The valve cover (13) is arranged between the filter tube (11) and the valve tube (12), and one end of the valve cover (13) is connected to the filter tube (11) Connected, the other end of the valve cover (13) is connected with the valve tube (12), and the filter tube (11) communicates with the valve tube (12) through the valve cover (13).
The valve body assembly according to claim 1, wherein the housing (10) is an integrally formed structure.
The valve body assembly according to claim 1, wherein the valve body assembly further comprises a first sealing member (40), the first sealing member (40) being arranged upstream of the valve core assembly (30), The valve core assembly (30) cooperates with the first sealing member (40) to block the second passage.
The valve body assembly according to claim 1, wherein the second passage has an inlet end and an outlet end opposite to each other, and the valve core assembly comprises:

The piston (31) is movably arranged in the second passage;

The second seal (32) is arranged at the end of the piston (31) close to the inlet end;

The gasket (33) is arranged on the piston (31), and the gasket (33) is used to fix the position of the second sealing member (32) on the piston (31).
The valve body assembly according to claim 6, wherein the piston (31) is provided with a guide hole (311), and the valve core assembly further comprises:

The guide post (34) is fixedly arranged in the second channel and located downstream of the piston (31). One end of the guide post (34) is inserted in the guide hole (311). The guide post (34) is used to guide the piston (31), the guide post (34) is provided with a balance hole (341), and one end of the balance hole (341) is in communication with the guide hole (311) , The other end of the balance hole (341) is in communication with the outlet end;

A positioning member (35), the positioning member (35) is arranged in the second channel, and an end of the guide column (34) away from the piston (31) is fixedly connected to the positioning member (35), The positioning member (35) is used to fix the position of the guide column (34) in the second channel.
The valve body assembly according to claim 1, wherein the inner diameter of the inlet end of the second channel gradually increases toward the fluid flow direction, the inner diameter of the outlet end of the second channel gradually decreases toward the fluid flow direction, and the The inner diameters of the inlet end and the outlet end are both smaller than the inner diameter of the middle of the second passage.
The valve body assembly according to claim 1, wherein the filter element (20) comprises:

Filter (21);

A fixing frame (22) is annularly arranged on the periphery of the filter screen (21), and the fixing frame (22) is fixedly connected with the inner wall of the first channel.
The one-way valve according to claim 7, wherein the positioning member (35) comprises:

The positioning plate (351) has a connecting hole (3511) in the middle of the positioning plate (351), and the end of the guide column (34) is inserted in the connecting hole (3511);

A plurality of extension ends (352), the plurality of extension ends (352) are arranged at circular intervals on the periphery of the positioning plate (351), and the positioning plate (351) is connected to the positioning plate (351) through the plurality of extension ends (352). The housing (30c) is connected.
The one-way valve according to claim 6, wherein the end of the piston (31) close to the inlet end is provided with a connecting protrusion (312), the second seal (32) and the gasket (33) are all sleeved on the connecting convex portion (312), and the gasket (33) is located on the side of the second sealing member (32) close to the inlet end.
The one-way valve according to claim 6, wherein the housing (30c) comprises a valve cover (303) and a main body (304), the valve cover (303) and the main body (304) are connected to each other, so The valve cover (303) and the main body (304) form the second passage, and the valve cover (303) has the inlet end.
A combination valve, wherein the combination valve comprises:

Pilot valve (81);

The main valve (50), the pilot valve (81) communicates with the main valve (50) through a capillary tube (82), and an inlet connector (51) and an outlet connector (52) are installed on the main valve (50) , The inlet connector (51) is located on one side of the main valve (50), and the outlet connector (52) is located on the other side of the main valve (50);

The valve body assembly is connected with the inlet connector (51), and the valve body assembly is the valve body assembly according to any one of claims 1 to 12.
The combination valve according to claim 13, wherein the second passage of the valve body assembly is connected to the inlet connector (51), and the second passage and the valve core assembly (30) form a one-way valve ( 30a), the central axis of the one-way valve (30a) is located in a plane formed by the central axes of the main valve (50) and the outlet pipe (52) or is arranged parallel to the plane, the single The total length of the valve (30a) is not greater than the farthest distance from the end of the main valve (50) to the central axis of the outlet nozzle (52).
The combination valve according to claim 14, wherein the inlet connector (51) is an elbow, and the connection direction of the filter element (20) and the one-way valve (30a) is the same as that of the main valve (20) The axis directions are the same.
The combination valve according to claim 14, wherein the combination valve further comprises:

The detecting element (60) is arranged on the side wall of the inlet connector (51) and/or the outlet connector (52).
The combination valve according to claim 16, wherein the combination valve further comprises:

The connecting piece (70) is arranged on the side wall of the inlet connecting pipe (51) and/or the outlet connecting pipe (52), the connecting piece (70) has an inlet (71) and an outlet (72), the The inlet (71) is in communication with the inlet connector (51), and the detecting member (60) is in communication with the outlet (72).
The combination valve according to claim 17, wherein the connecting piece (70) is arranged on the inlet nozzle (51), the connecting piece (70) has a plurality of the outlets (72), and the capillary tube One end of the (82) is in communication with the pilot valve (81), and the other end of the capillary (82) is in communication with one of the outlets (72).
The combination valve according to claim 17, wherein the connecting member (70) has a positioning structure, and the positioning structure is provided at the inlet (71) and/or the outlet (72).
The combination valve according to claim 14, wherein a flow guiding structure (30b) is provided on the inner wall of the second passage and/or the piston (31).
The combination valve according to claim 20, wherein the second passage has a first end and a second end opposed to each other, and the inner diameter of the first end gradually increases from the first end to the second end, and the The piston (31) has a plugging end and a connecting end which are arranged oppositely, the plugging end is arranged close to the first end, and the outer diameter of the plugging end gradually decreases from the plugging end to the connecting end.
The combination valve according to claim 13, wherein the combination valve further comprises:

The connecting piece (70) is arranged on the side wall of the inlet connector (51) and/or the outlet connector (52), the connecting piece (70) has an inlet (71) and at least one outlet (72), The inlet (71) of the connecting member (70) is used to communicate with the inlet connector (51) or the outlet connector (52), and at least one of the outlets (72) is used to communicate with the detecting member (60).
The combination valve according to claim 22, wherein the connecting piece (70) communicates with the inlet connector (51), the connecting piece (70) includes a plurality of outlets (72), and the capillary tube (82) One end of the capillary tube (82) communicates with the pilot valve (81), and the other end of the capillary tube (82) communicates with one of the outlets (72).
The combination valve according to claim 22, wherein the connecting member (70) comprises a plurality of outlets (72), and the diameters of the plurality of outlets (72) are the same.
The combination valve according to claim 24, wherein the connecting piece (70) has a cylindrical structure, the inlet (71) of the connecting piece (70) is arranged at one end of the connecting piece (70), and the The outlet (72) of the connecting piece (70) is arranged on the side wall of the connecting piece (70) and the other end of the connecting piece (70).
The combination valve according to claim 25, wherein the axis of the inlet (71) coincides with the axis of the outlet (72) at the end of the connecting piece (70).
The combination valve according to claim 25, wherein a plurality of the outlets (72) are provided on the side wall of the connecting piece (70), and a plurality of outlets (72) are provided on the side wall of the connecting piece (70). 72) symmetrically arranged with the axis of the inlet (71).
The combination valve according to claim 24, wherein the connecting piece (70) has a cylindrical structure, the inlet (71) of the connecting piece (70) is arranged at one end of the connecting piece (70), and the The multiple outlets (72) of the connecting piece (70) are all arranged at the other end of the connecting piece (70).
The combination valve according to claim 28, wherein a plurality of the outlets (72) are arranged symmetrically about the axis of the inlet (71).
The combination valve according to claim 22, wherein the connecting member (70) is provided with an annular boss (73), and the annular boss (73) is arranged along the periphery of the inlet (71).
The combination valve according to claim 22, wherein the connecting member (70) is provided with a connecting hole, the connecting hole forms the outlet (72), the connecting hole is a stepped hole, and the connecting hole The aperture near the outside of the connecting piece (70) is larger than the aperture near the inside of the connecting piece (70) of the connecting hole.
The combination valve according to claim 13, wherein the second passage of the valve body assembly is connected to the inlet connector (51), and the second passage and the valve core assembly (30) form a one-way valve ( 30a), the inlet connector (51) has a first section and a second section that are connected to each other, the first section and the second section have an included angle, and the first section is connected to the one-way valve (30a). )connect.
The combination valve according to claim 32, wherein the axis of the one-way valve (30a) and the axis of the port of the first section coincide with each other.
The combination valve according to claim 32, wherein the axis of the inlet nozzle (51), the axis of the main valve (50) and the axis of the outlet nozzle (52) are all on the same plane.
The combination valve according to claim 33, wherein the axis of the main valve (50) and the axis of the outlet pipe (52) are located on the same plane, and the axis of the first section has an included angle with the plane.
The combination valve according to claim 33, wherein the axis of the main valve (50) and the axis of the outlet pipe (52) are located on the same plane, and the axis of the first section is parallel to the plane.
The combination valve according to claim 32, wherein the connection between the inlet nozzle (51) and the main valve (50) does not coincide with the radial centerline of the main valve (50).