Valve device

Abstract

The valve device is characterized in that the valve device comprises a filtering component, the filtering component comprises a filtering cover and a filtering piece, the filtering cover comprises a containing cavity, and at least part of the filtering piece is located in the containing cavity; the containing cavity comprises a first containing cavity with an opening facing the fluid inlet end and a second containing cavity with an opening facing the fluid outlet end, the first containing cavity is located on one side of the filtering piece, the second containing cavity is located on the other side of the filtering piece, the filtering piece comprises a concave part which is concave towards the side opposite to the fluid inlet end, and the concave part is located in the containing cavity. The filtering effect of fluid entering the valve device can be improved.

Description

[0001] This invention requires that the application be submitted to the Chinese Patent Office on September 8, 2023, with application number

[0002] 202311159846.5, the priority of the Chinese patent application entitled “A Valve Device”, the entire contents of which are incorporated into the present invention by reference. Technical Field

[0003] The invention belongs to the technical field of fluid control, and in particular relates to a valve device. Background Art

[0004] Valve devices are widely used in fluid control systems. For example, as a ball valve used in central air conditioners in refrigeration systems, it can be used to control the on / off of the fluid medium in the system to maintain a stable room temperature. Considering that there are various impurities in the fluid medium in the fluid system, in order to avoid damage to related functional parts, it is necessary to set a filter component in the valve device. Summary of the invention

[0005] To this end, the present invention discloses a valve device, comprising: a valve body component, the valve body component comprising a valve body, the valve body comprising a fluid inlet end and a fluid outlet end; a valve core component, the valve core component comprising a valve core, the valve core is at least partially located in a valve cavity of the valve device, the valve core comprises a valve core channel, and the valve core channel can connect the fluid inlet end with the fluid outlet end; a filter component, at least partially located in the valve core channel, the filter component comprises a filter cover and a filter element, the filter cover comprises a accommodating chamber, the filter element is at least partially located in the accommodating chamber, the accommodating chamber comprises a first accommodating chamber opening toward the fluid inlet end and a second accommodating chamber opening toward the fluid outlet end, the first accommodating chamber is located on one side of the filter element, the second accommodating chamber is located on the other side of the filter element, and the filter element comprises a recessed portion recessed toward the side opposite to the fluid inlet end.

[0006] The valve device provided by the present invention can improve the filtering effect of the fluid entering the valve device because the filter element is recessed toward the side opposite to the fluid inlet end to form a recessed portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 : A schematic structural diagram of a valve device provided by the present invention;

[0008] Figure 2 : A three-dimensional structural schematic diagram of a filter component provided by the present invention;

[0009] Figure 3 : Figure 2 A bottom view of the filter component;

[0010] Figure 4: Figure 2 A schematic diagram of the filter element combination method;

[0011] Figure 5 : Figure 2 A magnified schematic diagram of a local area in FIG.

[0012] Figure 6 : A schematic structural diagram of a valve body provided by the present invention;

[0013] Figure 7 : Figure 6 A magnified schematic diagram of a local area in FIG.

[0014] Figure 8 : A schematic structural diagram of another valve device provided by the present invention;

[0015] Fig. 9 : Figure 8 A front view and a top view of a cover;

[0016] Fig.10 : Figure 8 Schematic diagram of the assembly combination of the cover and the filter component.

[0017] Figure 1-Figure 10 Symbols and diagrams:

[0018] 10-valve device;

[0019] 100-valve body parts;

[0020] 110-valve body;

[0021] 110A-first valve body, 110B-second valve body;

[0022] 111-valve chamber;

[0023] 112-installation cavity;

[0024] 113- fluid inlet port;

[0025] 114-fluid outlet port;

[0026] 115-step part;

[0027] 116- stopper;

[0028] 1161-first stopper, 1162-second stopper;

[0029] 117-external thread;

[0030] 120-Install the nut;

[0031] 121-internal thread;

[0032] 130-sealing gasket;

[0033] 200-valve core parts;

[0034] 210-valve core;

[0035] 211 - first valve core port, 212 - second valve core port;

[0036] 213-valve core channel;

[0037] 214-lower through hole;

[0038] 300-filter component;

[0039] 310-filter cover;

[0040] 311-first accommodating chamber, 312-second accommodating chamber;

[0041] 313 - opening of the first accommodating cavity, 314 - opening of the second accommodating cavity;

[0042] 315 - bottom of the first accommodating cavity, 316 - bottom of the second accommodating cavity;

[0043] 320-filter element;

[0044] 321-first side portion, 322-second side portion;

[0045] 323-concave;

[0046] 324- filter;

[0047] 325-support net;

[0048] 330-Body;

[0049] 331- annular part;

[0050] 332-Restriction Department;

[0051] 3321-first limiting portion, 3322-second limiting portion;

[0052] 340-sealing plate;

[0053] 341- plate seat portion;

[0054] 342-sealing plate portion;

[0055] 350-seal strip;

[0056] 400-stem. DETAILED DESCRIPTION

[0057] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The directional words such as upper and lower involved in this article are defined by the positions of the parts shown in the drawings relative to each other, just for the clarity and convenience of expressing the technical solution. It should be understood that the directional words used in this article should not limit the scope of protection requested by this application.

[0058] The technical concept of the present invention will be described below using a spherical valve core as a specific embodiment, but the present invention is not limited to the spherical valve core structure, and the technology disclosed in the present invention can be used as a technical solution for opening a rotary valve core.

[0059] Figure 1 Schematic diagram of the structure of a valve device provided by the present invention.

[0060] like Figure 1 The valve device 10 is specifically a ball valve, which mainly includes a valve body component 100, a valve core component 200, a filter component 300 and a valve stem 400.

[0061] The valve body component 100 includes a valve body 110. In this embodiment, the valve body 110 is assembled by a first valve body 110A and a second valve body 110B through threaded connection. The valve body 110 includes a valve cavity 111, an installation cavity 112, a fluid inlet end 113 and a fluid outlet end 114. The fluid inlet end 113 and the fluid outlet end 114 are arranged horizontally and can communicate with the valve cavity 111, and the installation cavity 112 is arranged longitudinally and can communicate with the valve cavity 111.

[0062] The valve core component 200 includes a valve core 210, which is a generally spherical structure and is disposed in the valve cavity 111. The valve stem 400 is inserted into the valve cavity 111 and can drive the valve core 210 to rotate. One side of the valve core 210 has a first valve core port 211, and the other side of the valve core 210 has a second valve core port 212. The valve core 210 includes a valve core channel 213, which can connect the first valve core port 211 and the second valve core port 212, so that the valve core channel 213 connects the fluid inlet end 113 and the fluid outlet end 114. The valve core 210 also includes a lower through hole 214.

[0063] The filter component 300 is substantially cylindrical, with a lower section located in the mounting cavity 112 of the valve body 110 , and an upper section passing through the lower through hole 214 of the valve core 210 and partially located in the valve core channel 213 .

[0064] Figure 2 This is a three-dimensional structural schematic diagram of a filter component provided by the present invention. Figure 3 for Figure 2 Bottom view of the filter component.

[0065] like Figure 2 , Figure 3 Shown and referenced Figure 1 . The filter component 300 includes a filter cover 310, a filter element 320 and a seat body 330. The filter cover 310 is a cylindrical structure, and the filter cover 310 includes a accommodating chamber. The filter element 320 is arranged in the accommodating chamber along the longitudinal direction and divides the accommodating chamber into a first accommodating chamber 311 and a second accommodating chamber 312. The first accommodating chamber 311 is located on one side of the filter element 320, and the second accommodating chamber 312 is located on the other side of the filter element 320. The opening 313 of the first accommodating chamber 311 faces the fluid inlet end 113, and the opening 314 of the second accommodating chamber 312 faces the fluid outlet end 114. The filter element 320 is generally a sheet-like structure, which is bent to include a recessed portion 323 (i.e., a recessed portion 323) that is recessed to the side opposite to the fluid inlet end 113. Figure 1 The concave shape is along the direction of fluid R). Figure 2 and Figure 3 In the specific embodiment given, the filter element 320 includes a first side portion 321 and a second side portion 322 , and the first side portion 321 and the second side portion 322 constitute a recess 323 (the recess 32 includes the first side portion 321 and the second side portion 322 ).

[0066] exist Figure 1 In the working mode shown, the fluid medium flowing into the valve core channel 213 from the fluid inlet port 113 will have solid impurities enter the first accommodating chamber 311 through the opening 313 of the first accommodating chamber, and the impurities will be filtered and collected in the first accommodating chamber 311. The fluid medium will enter the second accommodating chamber 312 through the mesh of the filter element 320 and flow out through the fluid outlet port 114.

[0067] In the above technical solution, the filter element is bent to form a concave portion sunken in the direction of the fluid R, which is arranged relative to the flat straight piece, thereby increasing the effective area of ​​contact between the fluid and the filter element, and improving the filtering effect of the fluid entering the valve device; on the other hand, after the filter element is bent to form the concave portion, it is arranged relative to the flat straight piece. Along the axial direction of the accommodation cavity, the volume of the accommodation cavity from the lowest point of the opening to the bottom of the first accommodation cavity 311 is greater than the volume of the accommodation cavity from the lowest point of the opening to the bottom of the second accommodation cavity 312 (that is, when the total volume of the accommodation cavity remains unchanged, the effective area of ​​the first accommodation cavity is increased), thereby increasing the accommodation space for filtering impurities.

[0068] Of course, as those skilled in the art can understand, the filter element can also be bent to form an arc edge portion, the arc edge portion constitutes a recess (the recess includes the arc edge portion); or the filter element forms a recess by combining an arc edge or a straight edge. No further details will be given here.

[0069] As a specific combination of the above technical solution, the filter cover 310 and the seat body 330 can be made of non-metallic materials, and the filter cover 310 and the seat body 330 can be integrally formed by injection molding or fixed by single bonding. It is also possible that when the filter cover 310 and / or the seat body 330 are injection molded, the assembled filter element 320 is first placed in the mold as an insert and fixed to it after injection molding.

[0070] Of course, as another specific embodiment, the filter cover 310 and the filter element 320 are both made of metal materials and fixedly connected by welding.

[0071] Figure 4 for Figure 2 Schematic diagram of the filter element combination.

[0072] like Figure 4 Shown and referenced Figure 2 The filter element 320 includes a filter sheet 324 and a support net 325, which are stacked and assembled into the filter element 320. The filter sheet 324 includes fine filter holes, and the pore size can be optimized according to the flow path system. The filter mesh number is between (30-100) meshes, so as to achieve the effect of filtering impurities in the flow path system.

[0073] Figure 5 for Figure 2 A magnified schematic diagram of a local area in Figure 6 A schematic diagram of the structure of a valve body provided by the present invention; Figure 7 for Figure 6 A magnified schematic diagram of a local area in .

[0074] like Figure 5 , Figure 6 and Figure 7 Shown and referenced Figure 1 and Figure 2 .

[0075] The seat body 330 is a generally annular structure, including an annular portion 331, which protrudes radially outward relative to the filter cover 310. The outer edge of the annular portion 331 includes a raised portion as a limiting portion 332, and the raised portion includes a side portion extending radially outward from the annular portion 331, and the side portion serves as a first limiting portion 3321; similarly, the raised portion also includes a shaft portion extending longitudinally upward from the annular portion 331, and the shaft portion serves as a second limiting portion 3322.

[0076] A step portion 115 is formed on the inner side wall of the valve body 110 forming the installation cavity 112, and the inner edge of the step portion 115 includes a recessed portion as a stopper 116. The stopper 116 includes a side wall extending radially outwardly along the step portion 115, and the side wall serves as a first stopper 1161, and the first stopper 1161 cooperates with the first position limiting portion 3321; similarly, the stopper 116 also includes a hole wall extending upwardly along the longitudinal direction of the step portion 115, and the hole wall serves as a second stopper 1162, and the second stopper 1162 cooperates with the second position limiting portion 3322.

[0077] After the filter component 300 is assembled from the installation cavity 112 of the valve body 110 , the annular portion 331 of the seat body 330 is located on the step portion 115 of the valve body 110 , and the first limiting portion 3321 cooperates with the first stop portion 1161 to limit the rotational displacement of the filter component 300 relative to the valve body 110 .

[0078] In the above embodiment, the second position limiting portion 3322 has two functions. First, the second position limiting portion 3322 cooperates with the second stop portion 1162 to limit the longitudinal displacement of the filter component 300 relative to the valve body 110, so as to achieve fixed fit or limited fit between the seat body 330 and the valve body 110; second, the annular portion 331 of the seat body 330 and the step portion 115 of the valve body 110 can abut against each other to achieve longitudinal displacement of the filter component 300 relative to the valve body 110. At this time, the main function of the cooperation between the second position limiting portion 3322 and the second stop portion 1162 is to avoid the situation where the radial protrusion of the first position limiting portion 3321 is too small, and there may be a risk of anti-rotation failure, and can also limit the rotational displacement of the filter component 300 relative to the valve body 110;

[0079] Furthermore, the second limit portion 3322 can prevent errors in the circumferential position of the filter component 300 and the valve body 110 when they are installed (when the filter component 300 and the valve body 110 are installed in a non-preset relative position, the filter component 300 cannot be installed into the valve body 110 due to the presence of the shaft).

[0080] The above technical solution improves the reliability and accuracy of installation.

[0081] Figure 8 FIG. 1 is a schematic structural diagram of another valve device provided by the present invention. Fig. 9 for Figure 8 A front view and a top view of a cover, Fig.10 for Figure 8 Schematic diagram of the assembly combination of the cover and the filter component.

[0082] like Figure 8 , Fig. 9 and Fig.10 Shown and referenced Figure 2. The filter component 300 also includes a sealing plate 340, and the sealing plate 340 includes a plate seat portion 341 and a sealing plate portion 342. The plate seat portion 341 has a step portion, and the step portion cooperates with the annular portion 331 of the seat body 330 and is glued or welded to position and fix the sealing plate 340 to the seat body 330. The cross-sectional shape of the sealing plate portion 342 is adapted to the cross-sectional shape of the bottom 316 of the second accommodating chamber. After installation, the sealing plate portion 342 can seal the opening of the bottom 316 of the second accommodating chamber. With such a design, the fluid medium contained in the first accommodating chamber 311 cannot enter the second accommodating chamber 312 through the gap at the bottom and re-enter the flow path system.

[0083] As a variation of the technical solution, the sealing plate portion 342 may also be disposed on one side of the bottom 315 of the first accommodating chamber. After installation, the opening of the bottom 315 of the first accommodating chamber is directly sealed, so that the fluid medium contained in the first accommodating chamber 311 cannot enter the second accommodating chamber 312 through the gap at the bottom and re-enter the flow path system.

[0084] Furthermore, the sealing plate 340 and the seat body 330 may also be configured as an integral injection molding structure.

[0085] like Fig.10 As a further extension of the technical solution, the sealing plate 340 is a non-metallic material injection molded part. When the sealing plate 340 is injection molded, the filter element 320 is assembled and embedded in the mold as an insert, and the filter element 320 and the sealing plate 340 are embedded and fixed.

[0086] like Figure 8 As shown. The valve body component 100 also includes a mounting nut 120 and a sealing gasket 130. The mounting nut 120 has an internal thread 121, and the valve body 110 has an external thread 117. As a specific assembly method, first assemble the filter element 320 and the sealing plate 340 (see Fig.10 ) is installed into the filter cover 310; the plate seat portion 341 and the seat body 330 are glued or welded to form the filter component 300, and the filter component 300 is installed in the installation cavity 112 of the valve body 110; the sealing gasket 130 is inserted into the receiving groove of the upper end of the mounting nut 120, and the mounting nut 120 is fixedly connected to the valve body 110 through screw connection. Since the sealing gasket 130 is used for sealing and abutment, the plate seat portion 341 and the seat body 330 can be set in a manner without fixing or sealing first.

[0087] like Figure 2 Shown and referenced Figure 1As a further extension of the above technical solution, the filter component 300 further includes at least two sealing strips 350. The sealing strips 350 are made of soft material and are formed on the outer periphery of the filter cover 310 by coating or pasting process and extend to the upper end and the lower end respectively in the longitudinal direction. The sealing strips 350 are respectively located between the opening 313 of the first accommodating cavity and the opening 314 of the second accommodating cavity along the circumference of the filter cover 310. After the filter component 300 is assembled with the valve body 110, the sealing strips 350 abut against the inner wall of the valve body 110, further limiting the impurities in the inlet fluid from flowing to the fluid outlet through the outer peripheral gap of the filter cover 310.

[0088] The above are only preferred implementation modes for better illustrating the technical solution of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. All these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A valve device, characterized in that: include: A valve body component, the valve body component comprising a valve body, the valve body comprising a fluid inlet end and a fluid outlet end; A valve core component, the valve core component comprising a valve core, the valve core at least partially located in the valve cavity of the valve device, the valve core comprising a valve core channel, the valve core channel being able to connect the fluid inlet end with the fluid outlet end; A filter component, wherein at least a portion of the filter component is located in the valve core channel, the filter component includes a filter cover and a filter element, the filter cover includes a accommodating chamber, the filter element is at least partially located in the accommodating chamber, the accommodating chamber includes a first accommodating chamber opening toward the fluid inlet end and a second accommodating chamber opening toward the fluid outlet end, the first accommodating chamber is located on one side of the filter element, the second accommodating chamber is located on the other side of the filter element, and the filter element includes a recessed portion recessed toward the side opposite to the fluid inlet end.

2. The valve device according to claim 1, characterized in that: The filter element includes a first side portion and a second side portion, and the recess includes at least a portion of the first side portion and the second side portion; or the filter element includes an arc-shaped edge portion, and the recess includes at least a portion of the arc-shaped edge portion.

3. The valve device according to claim 1, characterized in that: The accommodating cavity is cylindrical, and along the axial direction of the accommodating cavity, the volume of the first accommodating cavity from the lowest point of the opening to the bottom is greater than the volume of the second accommodating cavity from the lowest point of the opening to the bottom.

4. The valve device according to claim 1, characterized in that: The filter element comprises a filter sheet and a support net, and the filter mesh number of the filter sheet is 30-100 meshes.

5. The valve device according to claim 4, characterized in that: The filter cover is an injection molded part of a non-metallic material, and the filter element is fixed to the filter cover by injection molding; or the filter cover and the filter element are made of metal materials, and the filter cover and the filter element metal are fixedly connected by welding.

6. The valve device according to any one of claims 1 to 4, characterized in that: The filter component also includes a seat body, which is fixedly matched or limitedly matched with the valve body. The seat body and the filter cover are made of non-metallic materials, and the seat body is fixedly connected or integrally formed with the filter cover.

7. The valve device according to claim 6, characterized in that: The seat body includes a first limit portion and a second limit portion, the first limit portion extends along the radial direction of the filter component, and the second limit portion extends along the longitudinal direction of the filter component. The valve body includes a first stop portion and a second stop portion, the first stop portion cooperates with the first limit portion to limit the rotational displacement of the filter component relative to the valve body; the second stop portion cooperates with the second limit portion to limit the longitudinal displacement of the filter component relative to the valve body.

8. The valve device according to claim 7, characterized in that: The filter cover is cylindrical, the seat body includes an annular portion, the annular portion protrudes radially outward relative to the filter cover, and the first limiting portion and the second limiting portion are located in the annular portion.

9. The valve device according to claim 8, characterized in that The second limiting portion includes a shaft portion extending upwardly and protruding in the longitudinal direction of the annular portion, and the second stopper cooperates with the second limiting portion to limit the longitudinal displacement and axial displacement of the filter component relative to the valve body.

10. The valve device according to claim 8, characterized in that The filter component also includes a sealing plate, and the sealing plate portion is fixedly connected to the seat body, or limit-connected, or integrally formed, and the sealing plate portion can seal the bottom of the first accommodating cavity and / or can seal the bottom of the second accommodating cavity.

11. The valve device according to claim 8, characterized in that The sealing plate is an injection-molded part made of non-metallic material, and the filter element is fixed to the seat body by injection molding.

12. The valve device according to claim 1, characterized in that: The filter component also includes at least two sealing strips, which are made of soft material and are formed on the outer periphery of the filter cover by painting or pasting. The sealing strips extend longitudinally along the filter cover and are located between the opening of the first accommodating cavity and the opening of the second accommodating cavity along the circumference of the filter cover. The sealing strips abut against the inner wall of the valve body.

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