Valve element

Abstract

The embodiment of the utility model provides a valve element which comprises a valve rod, a first piston and a second piston, the valve rod is connected with the first piston and the second piston in a penetrating mode, and the first piston and the second piston are connected into a whole through a connecting plug. The upper portion of the first piston is connected with a first plug, and the lower portion of the first plug is connected with a valve frame. Wherein a plurality of separation grooves are formed in the valve rod at intervals, separation pieces are arranged in the separation grooves in a clamped mode respectively, and the separation pieces are used for limiting the installation position, located on the valve frame, of the valve rod. The four separation grooves are designed in the valve rod, the separation pieces are installed in the separation grooves respectively, and the separation pieces are used for dividing and limiting different installation areas respectively, so that the valve rod can be assembled and matched in a partitioned and limited mode in the installation and use process, and the valve rod can be disassembled as a whole in the use process. And partition disassembly can also be performed.

Description

Technical Field

[0001] The utility model relates to the technical field of valve cores, in particular to a valve core. Background Art

[0002] As a key pipeline accessory for fluid interception or flow, valve cores are widely used. In daily household bathrooms and household gas heating, the interception and flow of pipelines require various types of valve cores for control. In particular, when controlling multi-channel pipelines, multi-channel control valve cores are required.

[0003] Chinese patent CN117905906B discloses a valve core structure and a three-way valve with a central snap. The technical solution proposed is a valve core structure with a central snap, comprising: a valve body, provided with an inlet and a first and second outlets connected to the inlet; a valve stem, disposed within the valve body and movable along its own axial direction, with a first piston and a second piston slidingly sleeved around the outer periphery of the valve stem, the first piston for opening and closing the first outlet, and the second piston for opening and closing the second outlet; a first elastic component disposed on the valve stem for driving the first piston toward or away from the first outlet; a second elastic component disposed within the valve body for pushing the second piston toward the second outlet; and a central snap disposed on the valve stem for limiting the movement of the second piston toward the first piston. By adopting the above technical solution, the thrust exerted by the second elastic component on the second piston is transmitted through the valve stem rather than directly to the first piston, thereby reducing the force exerted on the first piston to open the first outlet. Therefore, the first piston is only subjected to the force exerted by the first elastic component, thereby making the first piston more tightly closed to the first outlet and improving the sealing performance of the first piston after closing the first outlet.

[0004] Although the above patent solution solves the sealing problem, in actual use, there is no limit structure designed at the lower end of the valve stem. When in use, the valve core may move due to the action of water flow and valve body. Utility Model Content

[0005] The utility model provides a valve core, which is used to solve the problem in the prior art that the lower end of the valve core is not designed to be restricted, and the valve core may move along with the water flow or the movement of the valve core during use.

[0006] The utility model provides a valve core, comprising: a valve stem, the valve stem penetrates and connects piston one and piston two, the piston one and piston two are connected as a whole through a connecting plug; the upper part of the piston one is connected to the plug one, the lower part of the piston two is connected to the water outlet joint, and the lower part of the plug one is connected to the valve frame.

[0007] Preferably, the piston 1 has a cylindrical structure on the top and a wasp waist structure on the bottom; a spring groove is provided on the top of the cylindrical structure of the piston 1, and a connecting cap 2 is provided on the bottom of the spring groove. The connecting cap 2 is used to sleeve the spring 2, and the top of the spring 2 is sleeved with the connecting cap 1. The connecting cap 1 is installed below the first sealed cabin, and the first sealed cabin is connected to the plug 1.

[0008] Preferably, the plug 1 is a tubular structure, the inner wall of the plug 1 is provided with a sealing cover at one end close to the piston 1, and the lower end of the sealing cover is provided with a connecting joint extending downwardly on one side close to the plug 1, and the connecting joint is used for the first sealed cabin sleeve connection.

[0009] Preferably, a cavity is provided in the connecting joint, and the cavity is used to accommodate a first separator mounted on the valve stem, and rubber rings five are respectively provided on the upper and lower parts of the first separator, and the rubber rings five are both mounted on the valve stem; the inner wall of the connecting joint is also provided with a partition groove, the opening of the partition groove faces the piston one, and a closed partition is provided in the partition groove, and the closed partition seals the first separator and the rubber ring five in the cavity formed in the connecting joint.

[0010] Preferably, a limiting groove is provided on the outer wall of one end of the connecting joint close to the plug, and the limiting groove cooperates with the limiting clamp on the inner wall of the first sealed cabin and is used to fix the first sealed cabin and the connecting joint into one.

[0011] Preferably, the outer wall of the valve frame is provided with rubber ring 2, and the outer wall of the water outlet joint is provided with rubber ring 1 and rubber ring 3 respectively. The rubber ring 1, rubber ring 2 and rubber ring 3 are all used to fit with the inner wall of the main pipe and form a corresponding sealing cavity.

[0012] Preferably, the piston 2 has a wasp waist structure on the top and a cylindrical structure on the bottom. A spring groove is provided below the cylindrical structure of the piston 2, and a spring 1 is embedded in the spring groove. The spring is provided on the outer wall of the valve stem, and the lower end of the spring 1 is provided on the spring limit platform. The spring limit platform is located on the spring frame, and the spring frame is connected to the water outlet joint.

[0013] Preferably, the water outlet joint is a tubular structure, and a circumferential outer wall of the water outlet joint is provided with a boss 1 extending and protruding outward.

[0014] Preferably, the outer walls of the cylindrical structures of the piston 1 and the piston 2 are both provided with rubber ring grooves, the rubber ring grooves are used to embed the rubber ring 4, and the rubber ring 4 is used to cooperate with the inner wall of the valve frame to form a corresponding sealing cavity;

[0015] The piston 1 and the piston 2 are both provided with a notch at one end close to the connecting plug, and a rubber ring 6 is embedded in each notch.

[0016] Preferably, the valve rack includes an upper valve rack and a lower valve rack, and the reciprocating motion of piston one and piston two by the valve stem is used to adjust the upper valve rack and the lower valve rack of the valve rack, and form an upper chamber and a lower chamber.

[0017] The working principle and beneficial effects of the utility model are as follows:

[0018] The present invention provides a valve core, comprising: a valve stem, the valve stem passing through and connecting piston 1 and piston 2, the piston 1 and piston 2 being connected as a whole via a connecting plug; the upper portion of the piston 1 is connected to plug 1, the lower portion of the piston 2 is connected to a water outlet joint, and the lower portion of the plug 1 is connected to a valve frame. A plurality of separation grooves are provided on the valve stem, each of which is provided with a separation plate, the separation plate being used to limit the installation position of the valve stem on the valve frame; at least four separation plates are provided on the valve stem from top to bottom; among the separation plates from top to bottom: the first separation groove is located below the first sealing chamber, for limiting the installation position of the first sealing chamber; the second separation groove is located above the piston 1 and below the connecting cap 2, for limiting the installation position of the piston 1 and the connecting cap 2; the third separation groove is located above the connecting plug, for limiting the installation position of the connecting plug and the lower end of the piston; the fourth separation groove is located at the lowest end of the valve stem, for limiting the installation position of the spring limit platform.

[0019] In the present invention, a connecting plug is provided between piston 1 and piston 2 so that the connecting plug can connect the two pistons. The top end of the valve stem is connected to a driving device. Four partition grooves are designed on the valve stem, each of which is equipped with a partition plate. Each partition plate is used to divide and restrict different installation areas. From top to bottom, the first partition groove is located below the first sealing chamber to restrict the installation position of the first sealing chamber; the second partition groove is located above piston 1 and below connecting cap 2 to restrict the installation position of piston 1 and connecting cap 2; the third partition groove is located above the connecting plug to restrict the installation position of the connecting plug and the lower end of the piston; the fourth partition groove is located at the lowest end of the valve stem to restrict the installation position of the spring limiter. Through the partition restriction, the valve core will not move in the pipeline due to water flow or valve body movement during operation, thereby ensuring the stability and reliability of the product.

[0020] Thus, the valve stem can be assembled and matched in a restricted manner during installation and use, and can be disassembled as a whole or in sections during use. When disassembling in sections, it can ensure that if a component of the valve body is damaged during use, the area corresponding to the component can be disassembled and repaired. The lower end bolt of the valve stem is connected to the spring bracket. When the valve core fails, the drive device and the bottom bolt can be disassembled and the valve core can be directly pulled out for repair or replacement. And because the structure is an integrated design, after being pulled out, piston one and piston two will not become loose. If the valve core only needs to be cleaned to eliminate the fault, the maintenance cost is effectively reduced. If the valve core needs to be replaced, it is disassembled and replaced according to the fault location. During installation, there is no need to consider the lack of installation restrictions at the lower end of the valve stem in the existing technology.

[0021] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0022] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0026] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model in use;

[0028] Figure 5 This is a schematic diagram of the structure of the utility model in use;

[0029] Figure 6 This is a schematic diagram of the second structural state of the utility model;

[0030] Figure 7 This is a schematic diagram of the valve stem and diaphragm structure of the utility model.

[0031] Among them, 1- plug one, 2- rubber ring one, 3- valve rack, 4- rubber ring two, 5- piston one, 6- piston two, 7- valve stem, 8- spring one, 9- rubber ring three, 10- boss one, 11- water outlet joint, 12- connecting cap one, 13- connecting joint, 14- spring two, 15- connecting cap two, 16- rubber ring four, 17- spring limit table, 18- spring groove, 19- first separator, 20- rubber ring five, 21- rubber ring six, 2 2-first sealed cabin, 23-spring bracket, 24-top end of main pipe, 25-bottom end of main pipe, 26-branch pipe one, 27-branch pipe two, 28-branch pipe three, 29-branch pipe four, 30-circlip connector, 31-branch pipe five, 32-branch pipe six, 33-connecting plug, 34-limiting groove, 35-limiting snap ring, 36-closing partition, 37-partition notch, 38-separator, 39-separator groove. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0033] according to Figure 1-6 As shown, an embodiment of the utility model provides a valve core, including: a valve stem 7, the valve stem 7 passes through and connects piston 1 5 and piston 2 6, and the piston 1 5 and the piston 2 6 are connected as a whole through a connecting plug 33; the upper part of the piston 1 5 is connected to the plug 1, the lower part of the piston 2 6 is connected to the water outlet joint 11, and the lower part of the plug 1 is connected to the valve rack 3.

[0034] The valve stem 7 is provided with a plurality of separation grooves 39 at intervals, and a separation piece 38 is respectively fixed in each of the separation grooves 39. The separation piece 38 is used to limit the valve stem 7 to the installation position of the valve frame 3;

[0035] At least four separators 38 are provided on the valve stem 7 from top to bottom;

[0036] In the separator 38 from top to bottom:

[0037] The first separation groove 39 is located below the first sealed cabin 22 and is used to limit the installation position of the first sealed cabin 22;

[0038] The second separation groove 39 is located above the piston 1 5 and below the connecting cap 2 15 and is used to limit the installation position of the piston 1 5 and the connecting cap 2 15;

[0039] The third separation groove 39 is located above the connecting plug 33 and is used to limit the installation position of the connecting plug 33 and the lower end of the piston 5;

[0040] The fourth separation groove 39 is located at the lowermost end of the valve stem and is used to limit the installation position of the spring limiting platform 17.

[0041] In the utility model, a connecting plug 33 is provided between piston 1 5 and piston 2 6 so that the connecting plug 33 can connect the two pistons. The top end of the valve stem 7 is connected to the driving device. Four separation grooves 39 are designed on the valve stem 7. A separation plate is installed in each separation groove 39. Each separation plate is used to divide and limit different installation areas. Among the separation plates from top to bottom: the first separation groove 39 is located below the first sealing cabin 22, and is used to limit the installation position of the first sealing cabin 22; the second separation groove 39 is located above the piston 1 5 and below the connecting cap 2 15, and is used to limit the installation position of the piston 1 5 and the connecting cap 2 15; the third separation groove 39 is located above the connecting plug 33, and is used to limit the installation position of the connecting plug 33 and the lower end of the piston 1 5; the fourth separation groove 39 is located at the lower end of the valve stem, and is used to limit the installation position of the spring limit platform 17. By means of zoning restrictions, the valve core will not move in the pipeline due to water flow or valve body movement during operation, thereby ensuring the stability and reliability of the product; and the valve stem can be assembled and matched in a zoned manner during installation and use.

[0042] At the same time, it can be disassembled as a whole or in sections during use. When disassembling in sections, it can ensure that if a component of the valve body is damaged during use, the area corresponding to the component can be disassembled and repaired. The lower end bolt of the valve stem 7 is connected to the spring bracket 23. When the valve core fails, the drive device and the bottom bolt can be disassembled and the valve core can be directly pulled out for repair or replacement. And because the structure is an integrated design, after being pulled out, the piston 1 5 and the piston 2 6 will not become loose. If the valve core only needs to be cleaned to eliminate the fault, the maintenance cost is effectively reduced. If the valve core needs to be replaced, it can be disassembled and replaced according to the fault location. During installation, there is no need to consider the lack of installation restrictions at the lower end of the valve stem 7 in the existing technology.

[0043] In one embodiment, the outer wall of the valve frame 3 is provided with a rubber ring 2 4 at intervals, and the outer wall of the water outlet joint 11 is provided with a rubber ring 2 and a rubber ring 3 9 respectively. The rubber ring 1 2, the rubber ring 2 4, and the rubber ring 3 9 are all used to fit with the inner wall of the main pipe and form a corresponding sealed cavity.

[0044] The water outlet joint 11 is a tubular structure, and a circumferential outer wall of the water outlet joint 11 is provided with a boss 10 extending and protruding outward.

[0045] The valve rack 3 includes an upper valve rack 3 and a lower valve rack 3. The reciprocating motion of piston 1 5 and piston 2 6 by valve stem 7 is used to adjust the upper valve rack 3 and the lower valve rack 3 of the valve rack 3 and form an upper chamber and a lower chamber.

[0046] In this embodiment, according to Figure 4 As shown, the upper valve rack 3 forms a passage with branch pipe 2 27 and branch pipe 5 31, and the lower valve rack 3 forms a passage with branch pipe 4 29 and branch pipe 6 32; branch pipe 1 26 and the channel of the water outlet joint 11 form a passage; branch pipe 2 27 and branch pipe 3 28 are connected.

[0047] The upper end of the main pipe is the main pipe top 24, which is equipped with a spring connector 30. The main pipe top 24 is used to connect to the valve core drive device, which is a motor or pump. The lower end of the main pipe is the main pipe bottom 25, the inner wall of which is interlocked with the boss 10.

[0048] When it is necessary to adjust the circulation pipeline, the driving device can realize the reciprocating movement of the valve core up and down on the inner wall of the main pipeline by lifting or dropping the valve stem 7. During its movement, the upper chamber and the lower chamber formed by the upper valve frame 3 and the lower valve frame 3 can be switched to the circulation channel; at the same time, the bottom chamber below the lower chamber can also be switched to realize the switching of different passages. In actual use, the purpose of multi-passage switching can be achieved. Compared with the previous valve core structure, the valve core structure in the utility model switches more passages, is simple to maintain, and is not prone to falling apart and difficult to install.

[0049] In one embodiment, the plug 1 is a tubular structure, and a sealing cover is provided on one end of the inner wall of the plug 1 close to the piston 5. A downward extending connecting joint 13 is provided on the lower end of the sealing cover close to the side of the plug 1, and the connecting joint 13 is used for the first sealing cabin 22 to be fitted and connected.

[0050] The connecting joint 13 is provided with a cavity, which is used to accommodate a first separator 19 mounted on the valve stem 7. The first separator 19 is provided with rubber rings 5 ​​20 above and below, and the rubber rings 5 ​​20 are both mounted on the valve stem 7; the inner wall of the connecting joint 13 is also provided with a partition groove 37, the opening of the partition groove 37 faces the piston 1 5, and a closed partition 36 is provided in the partition groove 37. The closed partition 36 encloses the first separator 19 and the rubber ring 5 20 in the cavity formed in the connecting joint 13, and the first separator 19 is used to isolate the rubber ring 5 20.

[0051] A limiting groove 34 is provided on the outer wall of one end of the connecting joint 13 close to the plug 1. The limiting groove 34 cooperates with a limiting snap ring 35 on the inner wall of the first sealing chamber 22 and is used to fixedly connect the first sealing chamber 22 and the connecting joint 13 as a whole. The limiting snap ring 35 and the connecting joint 13 together form a rubber protective sleeve structure to seal and protect the first separator 19, the rubber ring 5 20 and the valve stem 7.

[0052] In this embodiment, the valve frame 3 and the plug 1 are connected by a connecting joint 13, and during the connection process, an effective seal is achieved by a closed partition 36. This effectively prevents liquid or gas leakage during the switching process between different paths, greatly improving the stability and sealing of the product.

[0053] In one embodiment, the piston 15 has a cylindrical structure on the top and a wasp waist structure on the bottom; a spring groove 18 is provided on the top of the cylindrical structure of the piston 15, and a connecting cap 15 is provided on the bottom of the spring groove 18. The connecting cap 15 is used to sleeve the spring 14, and the top of the spring 14 is sleeved with a connecting cap 12. The connecting cap 12 is installed below the first sealed chamber 22, and the first sealed chamber 22 is connected to the plug 1.

[0054] The piston 2 6 has a wasp waist structure on the top and a cylindrical structure on the bottom. A spring groove 18 is provided below the cylindrical structure of the piston 2 6. A spring 18 is embedded in the spring groove 18. The spring 18 is sleeved on the outer wall of the valve stem 7, and the lower end of the spring 18 is sleeved on the spring limit platform 17. The spring limit platform 17 is located on the spring frame, and the spring frame is connected to the water outlet joint 11.

[0055] The outer walls of the cylindrical structures of the piston 1 5 and the piston 2 6 are both provided with rubber ring grooves, and the rubber ring grooves are used to embed the rubber ring 4 16. The rubber ring 4 16 is used to cooperate with the inner wall of the valve frame 3 to form a corresponding sealing cavity;

[0056] The piston 1 5 and the piston 2 6 are both provided with a notch at one end close to the connecting plug 33 , and a rubber ring 6 21 is embedded in each of the notches.

[0057] In this embodiment, pistons 1 5 and 2 6 move up and down via the pull of valve stem 7, thereby achieving coordinated motion within valve frame 3. The up and down movement of the two pistons, combined with the cooperation of the upper and lower valve frames 3 and the respective sealing rubber rings, achieves zoned sealing, enabling switching between different fluid channels. Furthermore, multiple sealing rubber rings are provided between the outer wall of the valve frame 3 and the inner wall of the main conduit to achieve sealing, effectively ensuring the airtightness of the valve core during use.

[0058] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A valve core, characterized in that: include: The valve stem passes through and connects piston one and piston two, and piston one and piston two are connected as a whole through a connecting plug; the top of piston one is connected to plug one, the bottom of piston two is connected to the water outlet joint, and the bottom of plug one is connected to the valve frame; a plurality of separation grooves are provided on the valve stem at intervals, and a separation plate is respectively clamped in each of the separation grooves, and the separation plate is used to limit the valve stem to the installation position of the valve frame.

2. A valve core according to claim 1, characterized in that: The piston 1 has a cylindrical structure on the top and a wasp waist structure on the bottom; a spring groove is provided on the top of the cylindrical structure of the piston 1, and a connecting cap 2 is provided at the bottom of the spring groove. The connecting cap 2 is used to sleeve the spring 2, and the top of the spring 2 is sleeved with the connecting cap 1. The connecting cap 1 is installed below the first sealed cabin, and the first sealed cabin is connected to the plug 1.

3. A valve core according to claim 1, characterized in that: The plug 1 is a tubular structure, and a sealing cover is provided on one end of the inner wall of the plug 1 close to the piston 1. A downwardly extending connecting joint is provided on the side of the lower end of the sealing cover close to the plug 1, and the connecting joint is used for the first sealed cabin sleeve connection.

4. A valve core according to claim 3, characterized in that: A cavity is provided in the connecting joint, and the cavity is used to accommodate a first separator mounted on the valve stem. Rubber rings five are respectively provided on the upper and lower parts of the first separator, and the rubber rings five are both mounted on the valve stem; a partition groove is also provided on the inner wall of the connecting joint, and the opening of the partition groove faces piston one, and a closed partition is provided in the partition groove, and the closed partition seals the first separator and the rubber ring five in the cavity formed in the connecting joint.

5. A valve core according to claim 4, characterized in that: A limiting groove is provided on the outer wall of one end of the connecting joint close to the plug. The limiting groove cooperates with the limiting clamp on the inner wall of the first sealed cabin and is used to fix the first sealed cabin and the connecting joint into one.

6. A valve core according to claim 1, characterized in that: The outer wall of the valve frame is provided with rubber ring 2, and the outer wall of the water outlet joint is provided with rubber ring 1 and rubber ring 3 respectively. The rubber ring 1, rubber ring 2 and rubber ring 3 are all used to fit with the inner wall of the main pipe and form a corresponding sealing cavity.

7. A valve core according to claim 1, characterized in that: The piston 2 has a wasp waist structure on the top and a cylindrical structure on the bottom. A spring groove is provided below the cylindrical structure of the piston 2, and a spring 1 is embedded in the spring groove. The spring is set on the outer wall of the valve stem, and the lower end of the spring 1 is set on the spring limit platform. The spring limit platform is located on the spring frame, and the spring frame is connected to the water outlet joint.

8. The valve core according to claim 1, characterized in that: The water outlet joint is a tubular structure, and a circumferential outer wall of the water outlet joint is provided with a boss 1 extending and protruding outward.

9. The valve core according to claim 1, characterized in that: The outer walls of the cylindrical structures of the pistons 1 and 2 are both provided with rubber ring grooves, the rubber ring grooves are used to embed the rubber ring 4, and the rubber ring 4 is used to cooperate with the inner wall of the valve frame to form a corresponding sealing cavity; The piston 1 and the piston 2 are both provided with a notch at one end close to the connecting plug, and a rubber ring 6 is embedded in each notch.

10. The valve core according to claim 1, characterized in that: The valve rack includes an upper valve rack and a lower valve rack. The reciprocating motion of piston 1 and piston 2 by the valve stem is used to adjust the upper valve rack and the lower valve rack of the valve rack, and form an upper chamber and a lower chamber.

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