A gate valve with filtration and cleaning function

Abstract

This utility model discloses a gate valve with filtration and cleaning functions, including a valve body, valve cover, flow channel, valve plate, valve stem, handwheel, filter cylinder, first channel, cleaning device, sealing cover, cleaning channel, and sealing plug. Side grooves are formed on both sides of the valve body opposite the cleaning channel. Each side groove contains a side locking member that locks the sealing plug by embedding. A horizontal inner channel is formed inside the sealing plug, containing a bidirectional unlocking member that can simultaneously push out both side locking members to release the sealing plug from its lock. This utility model has the following advantages and effects: The side locking member method for locking the sealing plug avoids thread wear and stripping issues compared to threaded fixing in the prior art, improving stability. Furthermore, the absence of threads effectively prevents impurities from easily seeping into the thread gaps and solidifying, preventing the sealing plug from being unable to be unscrewed properly, making it more reliable.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a gate valve with filtration and cleaning functions. Background Technology

[0002] In recent years, with the increasing demands for fluid control precision in industrial pipeline systems, gate valves with filtration and cleaning functions have been widely used in chemical, water treatment, and other fields due to their ability to both control fluid opening and closing and filter impurities. These gate valves typically include a valve body, valve cover, valve plate, valve stem, and a filter cartridge and cleaning device integrated into the flow channel.

[0003] In the prior art, Chinese patent CN202220536884.2 discloses a soft-seal gate valve that facilitates the replacement of the gate valve, including a gate valve body, a valve cover disposed on the gate valve body, an inlet channel and an outlet channel opened radially along the gate valve body, a valve plate disposed between the inlet channel and the outlet channel for controlling the opening and closing of fluid, a valve stem disposed above the valve plate inside the gate valve body, a channel opened above the gate valve body, the lower end of the valve stem connected to the valve plate, the upper end of the valve stem passing through the valve cover, and a filter cylinder, the gate valve body having a first channel in the inlet channel for the filter cylinder to pass through, the filter cylinder passing through the first channel with its lower end resisting the inner wall of the inlet channel, a cleaning device for cleaning the filter cylinder being provided inside the filter cylinder, and a fixing device for fixing the filter cylinder to the gate valve body being provided on the gate valve body.

[0004] In the aforementioned patent, the sealing plug on the cleaning channel is fixed by a threaded connection; specifically, the sealing plug is screwed into a threaded hole in the inner wall of the cleaning channel through an external thread, and the thread engagement force is used to achieve sealing and fixation. However, the above-mentioned threaded connection method has significant drawbacks in practical applications. First, the threaded structure is prone to wear or stripping during frequent disassembly and assembly, leading to a gradual decrease in sealing performance; second, in fluid conditions containing mud, sand, particles, or fibrous impurities, these impurities can easily seep into the thread gaps and solidify. Over a long period of time, these impurities will exacerbate the jamming phenomenon at the threaded parts, making it impossible to unscrew the sealing plug normally, and even requiring forced disassembly or replacement of valve body components, greatly increasing maintenance costs and downtime risks.

[0005] To address the aforementioned issues, the industry urgently needs an optimized solution for the sealing plug fixing structure that can simplify the disassembly and assembly process, improve structural stability, and extend service life. Utility Model Content

[0006] The purpose of this invention is to provide a gate valve with filtration and cleaning functions to solve the problems mentioned in the background art.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] A gate valve with filtration and cleaning function includes a valve body, a valve cover on the upper end of the valve body, a flow channel inside the valve body, a valve plate inside the flow channel, a valve stem on the upper end of the valve plate, and a handwheel linked to the valve stem on the upper end of the valve cover; it also includes a filter cylinder, a first channel inside the valve body for the filter cylinder to pass through, the filter cylinder passing through the first channel with its lower end resisting the inner wall of the flow channel, and a cleaning device for cleaning the filter cylinder inside the filter cylinder; a sealing cover on the valve body for fixing the filter cylinder to the valve body, the sealing cover resisting the filter cylinder; and a cleaning channel connected to the end of the filter cylinder in the valve body, with a sealing plug inside the cleaning channel.

[0009] The valve body has side grooves on both sides opposite to the cleaning channel. Each of the two side grooves is provided with a side locking member that locks the sealing plug by embedding. The sealing plug has a horizontal inner channel, and a bidirectional unlocking member is provided in the horizontal inner channel. The bidirectional unlocking member can push the two side locking members outward at the same time to release the locking of the sealing plug.

[0010] A further provision is that the side locking member includes an inner moving block disposed in the side groove and capable of horizontal movement. An embedded execution block is fixedly disposed on the inner side of the inner moving block. An inclined plane is provided at the lower end of the embedded execution block. The inclined plane can be driven to move outward by the push of the sealing plug.

[0011] The sealing plug has an embedded locking groove on each of its two opposite sides. The inner sides of the two embedded locking grooves are connected to the horizontal inner channel. After the sealing plug is inserted into the cleaning channel, the two embedded actuators can be embedded into the two embedded locking grooves respectively to lock the sealing plug.

[0012] A further feature is that each of the two side slots is provided with an active spring, which drives the embedded actuator block to move inward; a slot seat is fixedly provided on the outside of the side slot, and both the slot seat and the inner moving block are provided with grooves, with the two ends of the active spring respectively limited in the two grooves.

[0013] A further provision is that a first stop block is fixedly installed on the lower wall inside the side groove, and a second stop block is fixedly installed at the lower end of the inner moving block. The second stop block and the first stop block resist each other and are then limited in position.

[0014] A further configuration is that the bidirectional unlocking component includes a power component and two unlocking shafts disposed in the horizontal inner channel. Both unlocking shafts can move outward under the power provided by the power component, and after resisting the corresponding embedded execution block, push the corresponding embedded execution block outward, thereby enabling both embedded execution blocks to disengage from the corresponding embedded locking slot.

[0015] A further feature is that a third stop block is fixedly installed on the lower walls of both sides of the horizontal inner channel, and a fourth stop block is fixedly installed at the lower ends of the two unlocking shafts. The two fourth stop blocks can respectively resist the corresponding third stop blocks and be limited in position.

[0016] Furthermore, after the two fourth-position release blocks respectively resist the corresponding third-position release blocks, the two unlocking shafts will not extend into the side grooves on the corresponding sides.

[0017] A further provision is that a drive chamber is formed between the two unlocking shafts; the power component includes a drive hole opened in the sealing plug, the end of the drive hole being located on the surface of the sealing plug, and a connecting hole connecting the drive hole and the drive chamber is opened in the sealing plug, through which a gaseous substance as power can be added to the drive chamber.

[0018] A further feature is that a buffer spring is provided in the drive chamber, and the elastic force of the buffer spring is weaker than that of the active spring.

[0019] This utility model has the following beneficial effects:

[0020] 1. This utility model uses side locking members to lock the sealing plug by embedding them. Compared with the threaded fixing in the prior art, this eliminates the problems of thread wear and stripping, improving stability. Simultaneously, the absence of threads effectively prevents impurities from easily seeping into the thread gaps and solidifying, preventing the sealing plug from being unable to be unscrewed properly, making it more reliable in actual use. The bidirectional unlocking member can simultaneously push out both side locking members, releasing the sealing plug from its lock.

[0021] 2. In this utility model, after the sealing plug is inserted into the cleaning channel, the two embedded execution blocks can be embedded into the two embedded locking grooves respectively to lock the sealing plug; the inclined plane setting allows the embedded execution blocks to move outward during the installation of the sealing plug, so as to achieve unobstructed installation of the sealing plug.

[0022] 3. In this utility model, the active spring drives the embedded actuator block to move inward, and the two grooves are used to limit the active spring.

[0023] 4. In this utility model, the second disengagement block resists the first disengagement block and moves within the limit.

[0024] 5. In this utility model, the fourth release block resists the corresponding third release block and then limits the unlocking shaft.

[0025] 6. In this utility model, a gaseous substance as a driving force can be added to the drive chamber through the drive hole. After the gaseous medium enters the drive chamber, it can drive the two unlocking shafts to move outward and resist the corresponding embedded execution blocks, thereby pushing the corresponding embedded execution blocks to move outward. This allows both embedded execution blocks to disengage from the corresponding embedded locking grooves, making it convenient to remove the sealing plug.

[0026] 7. In this utility model, the buffer spring can reduce the impact force of the active spring. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0028] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0029] Figure 3 for Figure 2 Enlarged view of section B in the middle.

[0030] In the diagram: 11. Valve body; 12. Valve cover; 13. Flow channel; 14. Valve plate; 15. Valve stem; 16. Handwheel; 21. Filter cartridge; 22. Sealing cover; 23. Sealing plug; 231. Embedded locking groove; 31. Side groove; 32. Active spring; 33. Groove seat; 34. Groove; 41. Horizontal inner channel; 51. Inner moving block; 52. Embedded actuating block; 521. Inclined plane; 61. First stop release block; 62. Second stop release block; 63. Third stop release block; 64. Fourth stop release block; 71. Unlocking shaft; 81. Drive chamber; 82. Drive hole; 83. Connecting hole; 91. Buffer spring. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] As attached Figures 1 to 3 As shown;

[0033] This embodiment discloses a gate valve with filtration and cleaning functions, including a valve body 11, a valve cover 12 covering the upper end of the valve body 11, a flow channel 13 inside the valve body 11, a valve plate 14 inside the flow channel 13, a valve stem 15 at the upper end of the valve plate 14, and a handwheel 16 linked to the valve stem 15 at the upper end of the valve cover 12; it also includes a filter cylinder 21, a first channel inside the valve body 11 for the filter cylinder 21 to pass through, the filter cylinder 21 passing through the first channel with its lower end resisting the inner wall of the flow channel 13, and a cleaning device inside the filter cylinder 21 for cleaning the filter cylinder 21; the cleaning device includes a filter cylinder 12... The filter cartridge 21 contains a brush for cleaning the filter cartridge 21. The brush is located at the bottom of the filter cartridge 21 and resists the inner wall of the filter cartridge 21. The filter cartridge 21 is provided with a pull rope for pulling the brush to slide up and down inside the filter cartridge 21 to clean the filter cartridge 21. The pull rope passes through the upper end of the filter cartridge 21 and is provided with a pull ring. The valve body 11 is also provided with a sealing cover 22 for fixing the filter cartridge 21 to the valve body 11. The sealing cover 22 is threadedly connected to the inner wall of the first channel and resists the filter cartridge 21. The valve body 11 has a cleaning channel that communicates with the end of the filter cartridge 21. A sealing plug 23 is provided in the cleaning channel.

[0034] The above-mentioned structure is referenced in application number CN202220536884.2, which discloses a soft-seal gate valve that is easy to replace. This belongs to the prior art and will not be described further here.

[0035] This embodiment makes the following improvements based on the aforementioned patent.

[0036] The valve body 11 has side grooves 31 on both sides opposite to the cleaning channel. Each side groove 31 is provided with a side locking member that locks the sealing plug 23 by embedding. The sealing plug 23 has a horizontal inner channel 41. A bidirectional unlocking member is provided in the horizontal inner channel 41. The bidirectional unlocking member can push the two side locking members outward at the same time to release the locking of the sealing plug 23.

[0037] The side locking component includes an inner moving block 51 disposed in the side groove 31 and capable of horizontal movement. An embedded execution block 52 is fixedly disposed on the inner side of the inner moving block 51. An inclined plane 521 is disposed at the lower end of the embedded execution block 52. The inclined plane 521 can be driven to move outward by the push of the sealing plug 23.

[0038] The sealing plug 23 has two opposite sides with embedded locking grooves 231. The inner side of the two embedded locking grooves 231 is connected to the horizontal inner channel 41. After the sealing plug 23 is inserted into the cleaning channel, the two embedded execution blocks 52 can be embedded into the two embedded locking grooves 231 respectively to lock the sealing plug 23.

[0039] Each of the two side slots 31 is provided with an active spring 32, which drives the embedded execution block 52 to move inward; a slot seat 33 is fixedly provided on the outside of the side slot 31, and both the slot seat 33 and the inner moving block 51 are provided with grooves 34, and the two ends of the active spring 32 are respectively limited in the two grooves 34.

[0040] The lower wall inside the side groove 31 is fixedly provided with a first stop block 61, and the lower end of the inner moving block 51 is fixedly provided with a second stop block 62. The second stop block 62 resists the first stop block 61 and is limited.

[0041] The bidirectional unlocking component includes a power component and two unlocking shafts 71 disposed in the horizontal inner channel 41. Both unlocking shafts 71 can move outward under the power provided by the power component, and after resisting the corresponding embedded execution block 52, push the corresponding embedded execution block 52 outward, thereby enabling both embedded execution blocks 52 to disengage from the corresponding embedded locking slot 231.

[0042] The lower walls on both sides of the horizontal inner channel 41 are fixedly provided with third stop blocks 63, and the lower ends of the two unlocking shafts 71 are fixedly provided with fourth stop blocks 64. The two fourth stop blocks 64 can resist the corresponding third stop blocks 63 respectively to limit the movement.

[0043] Furthermore, after the two fourth-gear release blocks 64 resist the corresponding third-gear release blocks 63 respectively, the two unlocking shafts 71 will not extend into the side grooves 31 on the corresponding side.

[0044] A drive chamber 81 is formed between the two unlocking shafts 71; the power component includes a drive hole 82 opened in the sealing plug 23, the end of the drive hole 82 is located on the surface of the sealing plug 23, and a connecting hole 83 is opened in the sealing plug 23 to connect the drive hole 82 and the drive chamber 81, through which a gaseous substance as power can be added to the drive chamber 81.

[0045] The drive chamber 81 is equipped with a buffer spring 91, the elastic force of which is weaker than that of the active spring 32.

[0046] The working principle of this embodiment is as follows:

[0047] 1. When installing the sealing plug 23, push the sealing plug 23 upward into the cleaning channel. During this process, the sealing plug 23 will resist the inclined plane 521 and then push the embedded actuator block 52 outward, so as to achieve unobstructed installation of the sealing plug 23. After the sealing plug 23 is inserted into the cleaning channel, the two embedded actuator blocks 52 can be embedded into the two embedded locking slots 231 under the drive of the corresponding active springs 32 to lock the sealing plug 23.

[0048] 2. When removing the sealing plug 23, connect the output pipe on the portable pump body to the drive hole 82. Then, a gaseous substance as power can be added to the drive chamber 81 through the drive hole 82. Both unlocking shafts 71 can move outward under the power provided by the gaseous substance, and push the corresponding embedded execution block 52 outward after resisting it. This allows both embedded execution blocks 52 to disengage from the corresponding embedded locking groove 231, and the sealing plug 23 can then be removed. After the two fourth-position release blocks 64 resist the corresponding third-position release blocks 63, the two unlocking shafts 71 will not extend into the side groove 31 on the corresponding side, and will not obstruct the process of removing the sealing plug 23.

[0049] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A gate valve with filtration and cleaning function, comprising a valve body (11), a valve cover (12) covering the upper end of the valve body (11), a flow channel (13) formed inside the valve body (11), a valve plate (14) disposed inside the flow channel (13), a valve stem (15) disposed at the upper end of the valve plate (14), and a handwheel (16) linked to the valve stem (15) disposed at the upper end of the valve cover (12); further comprising a filter cartridge (21), wherein a first channel for the filter cartridge (21) to pass through is formed inside the valve body (11), wherein... The filter cartridge (21) is inserted into the first channel and the lower end of the filter cartridge (21) resists the inner wall of the flow channel (13). The filter cartridge (21) is provided with a cleaning device for cleaning the filter cartridge (21). The valve body (11) is also provided with a sealing cover (22) for fixing the filter cartridge (21) to the valve body (11). The sealing cover (22) resists the filter cartridge (21). The valve body (11) has a cleaning channel that communicates with the end of the filter cartridge (21). A sealing plug (23) is provided in the cleaning channel. Its features are: The valve body (11) has side grooves (31) on both sides opposite to the cleaning channel. Each of the two side grooves (31) is provided with a side locking member that locks the sealing plug (23) by embedding. The sealing plug (23) has a horizontal inner channel (41) inside. The horizontal inner channel (41) is provided with a bidirectional unlocking member. The bidirectional unlocking member can push out both side locking members at the same time to release the locking of the sealing plug (23).

2. A gate valve with filtration and cleaning function according to claim 1, characterized in that: The side locking member includes an inner moving block (51) disposed in the side groove (31) and capable of horizontal movement. An embedded execution block (52) is fixedly disposed on the inner side of the inner moving block (51). An inclined plane (521) is provided at the lower end of the embedded execution block (52). The inclined plane (521) can be driven by the push of the sealing plug (23) to drive the embedded execution block (52) to move outward. The sealing plug (23) has an embedded locking groove (231) on both sides opposite to each other. The inner sides of the two embedded locking grooves (231) are connected to the horizontal inner channel (41). After the sealing plug (23) is inserted into the cleaning channel, the two embedded execution blocks (52) can be embedded into the two embedded locking grooves (231) respectively to lock the sealing plug (23).

3. A gate valve with filtration and cleaning function according to claim 2, characterized in that: Both of the side grooves (31) are provided with active springs (32), which drive the embedded execution block (52) to move inward; a groove seat (33) is fixedly provided on the outside of the side groove (31), and both the groove seat (33) and the inner moving block (51) are provided with grooves (34), and the two ends of the active spring (32) are respectively limited in the two grooves (34).

4. A gate valve with filtration and cleaning function according to claim 2, characterized in that: A first stop block (61) is fixedly provided on the lower wall inside the side groove (31), and a second stop block (62) is fixedly provided at the lower end of the inner moving block (51). The second stop block (62) and the first stop block (61) resist each other and are then limited in position.

5. A gate valve with filtration and cleaning function according to claim 2, characterized in that: The bidirectional unlocking component includes a power component and two unlocking shafts (71) disposed in the horizontal inner channel (41). Both unlocking shafts (71) can move outward under the power provided by the power component, and after resisting the corresponding embedded execution block (52), push the corresponding embedded execution block (52) outward, thereby enabling both embedded execution blocks (52) to disengage from the corresponding embedded locking slot (231).

6. A gate valve with filtration and cleaning function according to claim 5, characterized in that: The lower walls on both sides of the horizontal inner channel (41) are fixedly provided with third stop blocks (63), and the lower ends of the two unlocking shafts (71) are fixedly provided with fourth stop blocks (64). The two fourth stop blocks (64) can respectively resist the corresponding third stop blocks (63) and be limited. Furthermore, after the two fourth release blocks (64) resist the corresponding third release blocks (63) respectively, the two unlocking shafts (71) will not extend into the side grooves (31) on the corresponding side.

7. A gate valve with filtration and cleaning function according to claim 5, characterized in that: A drive chamber (81) is formed between the two unlocking shafts (71); the power component includes a drive hole (82) opened in the sealing plug (23), the end of the drive hole (82) is located on the surface of the sealing plug (23), and a connecting hole (83) is opened in the sealing plug (23) to connect the drive hole (82) and the drive chamber (81), through which a gaseous substance as power can be added to the drive chamber (81).

8. A gate valve with a filtration and cleaning function according to claim 7, characterized in that: A buffer spring (91) is provided in the drive chamber (81), and the elastic force of the buffer spring (91) is weaker than that of the active spring (32).

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