Double-gate-disc gate valve with non-return mechanism

Abstract

The utility model belongs to the technical field of gate valves, and particularly relates to a double-gate-plate gate valve with a non-return mechanism, which comprises a valve body. Two first fixing plates are mounted in the middle of the valve body; the two first fixing plates are oppositely arranged; the end part of the first fixing plate is rotationally connected with a second fixing plate; the end part of the second fixing plate is fixedly connected with a clamping block; a fixing groove is formed in the end part of the first fixing plate; a sliding block is slidably connected to the middle of the fixing groove. A clamping groove is formed in the middle of the sliding block; the end part of the sliding block is fixedly connected with two spiral springs; the ends of the two spiral springs are fixedly connected to the ends of the fixing grooves. An adjusting assembly is arranged in the middle of the first fixing plate; by means of the structure, additional support can be provided for the valve body, deformation or displacement of the valve body caused by fluid pressure, temperature changes or external vibration is effectively reduced, vibration in the operation process of the valve body can be absorbed and relieved, and the overall stability of the valve body is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of gate valve technology, specifically a double gate valve with a check mechanism. Background Technology

[0002] Double gate valves are mainly used in fluid inlet, outlet and conveying pipelines for shut-off and connection purposes, and are widely used in industries such as petroleum, chemical, pharmaceutical and power.

[0003] Existing double gate valves with check mechanisms typically include components such as double gates, gate seats, valve stems, and check mechanisms. The double gate valve functions as a sealing valve and a check valve. When the valve is closed, the double gates are tightly fitted to the valve seat by the valve stem, forming a seal. At the same time, the check mechanism is also closed, preventing fluid backflow inside the valve body.

[0004] During the operation of a double gate valve with a check mechanism, the flow of the fluid medium will change with the fluid speed and pressure, resulting in external vibration. Existing double gate valves with check mechanisms are fixed on the bracket, and the valve body is prone to deformation or displacement due to vibration. Long-term use will lead to sealing failure and leakage problems.

[0005] Therefore, this utility model provides a double gate valve with a check valve mechanism. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A double-gate valve with a check mechanism, comprising a valve body; two first fixing plates are installed in the middle of the valve body; the two first fixing plates are arranged opposite to each other; a second fixing plate is rotatably connected to the end of each first fixing plate; a locking block is fixedly connected to the end of the second fixing plate; a fixing groove is formed at the end of each first fixing plate; a slider is slidably connected in the middle of the fixing groove; a locking groove is formed in the middle of the slider; two helical springs are fixedly connected to the end of the slider; the ends of the two helical springs are fixedly connected to the end of the fixing groove; an adjustment assembly is provided in the middle of the first fixing plate; the adjustment... The component has multiple support rods in the middle; support plates are fixed to the ends of the multiple support rods; multiple damping springs are fixed to the top of the support plates; the damping springs are arranged inside the support rods; the above structure provides additional support for the valve body, effectively reducing valve body deformation or displacement caused by fluid pressure, temperature changes or external vibrations, absorbing and mitigating vibrations during valve body operation, enhancing the overall stability of the valve body, enabling the valve body to maintain normal operation under various working conditions, and effectively reducing the pressure of the valve body on the pipeline system, maintaining the stability of the valve body, and reducing sealing failure and leakage problems caused by vibration or deformation during valve body operation.

[0008] Preferably, the adjusting assembly includes a rotating seat; the rotating seat is fixedly connected to the middle of the first fixed plate; a screw is rotatably connected to the middle of the rotating seat; a nut is threadedly connected to the middle of the screw; multiple slide rods are hinged to the bottom of the nut; the multiple slide rods are slidably connected to the middle of the corresponding support rods; one end of the damping spring is fixedly connected to the end of the slide rod; the above structure enables the valve body to be height adjusted, effectively achieving precise control of the flow rate and pressure of the fluid medium. The adjusting assembly has high stability, maintaining a stable position when the valve body is height adjusted, and is not easily displaced by external forces or vibrations, making operation convenient and quick.

[0009] Preferably, two first flow control plates are fixedly connected to the middle of the valve body; the two first flow control plates are arranged opposite each other; the first flow control plates are fixedly connected to the valve body near the end; multiple sets of large and small holes are opened in the middle of the first flow control plates; a second flow control plate is rotatably connected to the middle of the first flow control plates; multiple sets of through holes are opened in the middle of the second flow control plate; the above structure realizes precise control of fluid flow, effectively improves the accuracy of flow control inside the valve body, can better adapt to different flow requirements, can optimize the flow path of fluid inside the valve body, thereby reducing turbulence and eddies of fluid inside the valve body, and can be adjusted according to actual needs to meet different process requirements.

[0010] Preferably, the inner wall of the valve body has two spiral patterns; the two spiral patterns are located at the ends of the valve body; a ring is installed in the middle of the spiral patterns; a filter screen is fixedly connected to the middle of the ring; the above structure can effectively filter impurities in the fluid, effectively reduce the wear and corrosion caused by impurities to the valve body and pipeline, extend the service life of the valve body and pipeline, and allow for quick installation and removal of the filter screen. When too much impurity accumulates on the filter screen, it is convenient to remove the filter screen for cleaning or replacement, effectively maintaining the filtration effect of the filter screen and the normal operation of the valve body.

[0011] Preferably, two sealing strips are installed at the end of the valve body; the sealing strips are fixed to the end of the valve body; the two sealing strips are arranged opposite each other; the above structure can provide an additional sealing effect between the valve body and the pipeline, so that the connection between the valve body and the pipeline will not leak fluid medium. The sealing strips have good elasticity and sealing performance, which can effectively reduce the scouring and corrosion of the connection between the valve body and the pipeline by the fluid medium, thereby extending the service life of the valve body and the pipeline.

[0012] Preferably, two retaining rings are fixedly connected to the middle of the nut; the two retaining rings are arranged opposite each other; a brush is fixedly connected to the middle of the retaining ring; through the above structure, the brush can closely fit the surface of the screw, effectively remove dirt and residues on the screw, reduce wear and corrosion of the screw, thereby extending the service life of the screw, keeping the surface of the screw smooth and clean, and effectively enhancing the smoothness and flexibility between the screw and the nut.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The double gate valve with check mechanism described in this utility model provides additional support for the valve body through the above structure, effectively reducing valve body deformation or displacement caused by fluid pressure, temperature changes or external vibrations. It can absorb and mitigate vibrations during valve body operation, enhance the overall stability of the valve body, enable the valve body to maintain normal operation under various working conditions, and effectively reduce the pressure of the valve body on the pipeline system, maintain the stability of the valve body, and reduce sealing failure and leakage problems caused by vibration or deformation during valve body operation.

[0015] 2. The double gate valve with check mechanism described in this utility model can adjust the height of the valve body through the above structure, effectively realizing precise control of the flow rate and pressure of the fluid medium. The adjustment component has high stability and can maintain a stable position when the valve body is adjusted in height. It is not easy to deviate due to external force or vibration, and the operation is convenient and quick. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1This is a perspective view of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the adjustment component in this utility model;

[0019] Figure 3 This is an exploded view of the first fixing plate in this utility model;

[0020] Figure 4 This is an exploded view of the first flow control plate in this utility model.

[0021] In the diagram: 1. Valve body; 10. First fixing plate; 11. Second fixing plate; 12. Locking block; 13. Fixing groove; 14. Slider; 15. Locking groove; 16. Helical spring; 17. Support rod; 18. Damping spring; 19. Support plate; 2. Adjusting assembly; 21. Nut; 22. Rotating seat; 23. Screw; 24. Slide rod; 3. First flow control plate; 31. Large hole; 32. Small hole; 33. Second flow control plate; 34. Through hole; 4. Spiral pattern; 41. Ring; 42. Filter screen; 5. Sealing strip; 6. Fixing ring; 61. Brush; 7. Rubber pad. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figure 1 Figure 4As shown in the figure, a double gate valve with a check mechanism according to an embodiment of the present invention includes a valve body 1; two first fixing plates 10 are installed in the middle of the valve body 1; the two first fixing plates 10 are arranged opposite each other; a second fixing plate 11 is rotatably connected to the end of the first fixing plate 10; a locking block 12 is fixedly connected to the end of the second fixing plate 11; a fixing groove 13 is opened at the end of the first fixing plate 10; a slider 14 is slidably connected in the middle of the fixing groove 13; a locking groove 15 is opened in the middle of the slider 14; two helical springs 16 are fixedly connected to the end of the slider 14; the two helical springs 16 are fixedly connected to the end of the slider 14. The end of the spring 16 is fixedly connected to the end of the fixing groove 13; the first fixing plate 10 is provided with an adjusting assembly 2 in the middle; the adjusting assembly 2 is provided with multiple support rods 17 in the middle; the ends of the multiple support rods 17 are fixedly connected to a support plate 19; multiple damping springs 18 are fixedly connected to the top of the support plate 19; the damping springs 18 are disposed inside the support rods 17; during operation, the valve body 1 is placed in the middle of the two first fixing plates 10, and the second fixing plate 11 is rotated so that its end is tightly fitted with the end of the first fixing plate 10, thereby fixing the valve body 1 in place by the second fixing plate 11. During the process, pressing the slider 14 causes the two helical springs 16 to elastically contract, and the locking block 12 enters the middle of the locking groove 15. After the second fixing plate 11 is tightly attached to the end of the first fixing plate 10, the slider 14 is released and popped out by the elastic force of the two helical springs 16. The end of the slider 14 enters the middle of the locking block 12, and the locking block 12 locks the slider 14, thus fixing the second fixing plate 11 and the first fixing plate 10. The height of the valve body 1 is adjusted by the adjusting component 2. During the operation of the valve body 1, the damping spring 18 absorbs the vibration during operation while supporting the valve body 1. The above structure provides additional support for the valve body 1, effectively reducing the deformation or displacement of the valve body 1 caused by fluid pressure, temperature changes or external vibration. It can absorb and slow down the vibration of the valve body 1 during operation, enhance the overall stability of the valve body 1, enable the valve body 1 to maintain normal operation under various working conditions, and effectively reduce the pressure of the valve body 1 on the pipeline system, maintain the stability of the valve body 1, and reduce the sealing failure and leakage problems caused by vibration or deformation of the valve body 1 during operation.

[0024] like Figure 1 and Figure 2As shown, the adjusting assembly 2 includes a rotating seat 22; the rotating seat 22 is fixedly connected to the middle of the first fixed plate 10; a screw 23 is rotatably connected to the middle of the rotating seat 22; a nut 21 is threadedly connected to the middle of the screw 23; multiple slide rods 24 are hinged to the bottom of the nut 21; the multiple slide rods 24 are slidably connected to the middle of the corresponding support rod 17; one end of the damping spring 18 is fixedly connected to the end of the slide rod 24; during operation, after the valve body 1 is fixed, the screw 23 is rotated. At this time, the end of the screw 23 rotates in the middle of the rotating seat 22, and at the same time, the screw 23 moves up and down in the middle of the nut 21, according to the... The required height is achieved by rotating the screw 23 to the designated position. When the valve body 1 vibrates, the slide rod 24 slides in the middle of the support rod 17 while rotating in the middle of the nut 21. At the same time, the damping spring 18 reduces the vibration of the slide rod 24 as it slides in the middle of the support rod 17. Through the above structure, the height of the valve body 1 can be adjusted, effectively realizing precise control of the flow rate and pressure of the fluid medium. The adjustment component 2 has high stability and can maintain a stable position when the height of the valve body 1 is adjusted. It is not easy to deviate due to external force or vibration, and the operation is convenient and quick.

[0025] like Figure 4 As shown, two first flow control plates 3 are fixedly connected to the middle of the valve body 1; the two first flow control plates 3 are arranged opposite each other; the first flow control plates 3 are fixed to the valve body 1 near the end; multiple sets of large holes 31 and small holes 32 are opened in the middle of the first flow control plates 3; a second flow control plate 33 is rotatably connected to the middle of the first flow control plate 3; multiple sets of through holes 34 are opened in the middle of the second flow control plate 33; during operation, when the valve body 1 is in use, the second flow control plate 33 is rotated in the middle of the first flow control plate 3 as needed. When a larger flow rate of liquid is required, the second flow control plate 33 is rotated. By aligning the through hole 34 with the small hole 32, when a smaller flow rate of liquid is required, the second flow control plate 33 is rotated to align the through hole 34 with the large hole 31, thereby controlling the flow inside the valve body 1. Through the above structure, precise control of fluid flow rate is achieved, effectively improving the accuracy of flow control inside the valve body 1. It can better adapt to different flow requirements, optimize the flow path of fluid inside the valve body 1, thereby reducing turbulence and eddies of fluid inside the valve body 1, and can be adjusted according to actual needs to meet different process requirements.

[0026] like Figure 1 and Figure 4As shown, two spiral patterns 4 are formed on the inner wall of the valve body 1; the two spiral patterns 4 are formed at the end of the valve body 1; a ring 41 is installed in the middle of the spiral pattern 4; a filter screen 42 is fixedly connected to the middle of the ring 41; during operation, when installing the valve body 1, after adjusting the second flow control plate 33, the filter screen 42 is first inserted from the end of the valve body 1, and the filter screen 42 is rotated so that the ring 41 enters the corresponding spiral pattern 4, thereby fixing the filter screen 42 to the end of the valve body 1. After a period of use, the filter screen 42 is unscrewed for subsequent cleaning and replacement. The above structure can effectively filter impurities in the fluid, effectively reduce the wear and corrosion caused by impurities to the valve body 1 and the pipeline, and extend the service life of the valve body 1 and the pipeline. The filter screen 42 can be quickly installed and removed, and when too much impurity accumulates on the filter screen 42, it can be easily removed for cleaning or replacement, effectively maintaining the filtration effect of the filter screen 42 and the normal operation of the valve body 1.

[0027] like Figure 4 As shown, two sealing strips 5 are installed at the end of the valve body 1; the sealing strips 5 are fixed to the end of the valve body 1; the two sealing strips 5 are arranged opposite each other; during operation, when connecting the valve body 1 to the pipeline, the sealing strips 5 are first placed into the end of the pipeline, and the sealing strips 5 fit against the inner wall of the pipeline, thus sealing the valve body 1 and the end of the pipeline. The above structure can provide an additional sealing effect between the valve body 1 and the pipeline, so that the connection between the valve body 1 and the pipeline will not leak fluid medium. The sealing strips 5 have good elasticity and sealing performance, which can effectively reduce the scouring and corrosion of the connection between the valve body 1 and the pipeline by the fluid medium, thereby extending the service life of the valve body 1 and the pipeline.

[0028] like Figure 1 and Figure 2 As shown, two retaining rings 6 are fixedly connected to the middle of the nut 21; the two retaining rings 6 are arranged opposite each other; a brush 61 is fixedly connected to the middle of the retaining rings 6; during operation, as the screw 23 rotates and moves in the middle of the nut 21, the end of the brush 61 is in contact with the surface of the screw 23, and the brush 61 cleans the surface and gaps of the screw 23. Through the above structure, the brush 61 can closely fit the surface of the screw 23, effectively remove dirt and residues on the screw 23, reduce the wear and corrosion of the screw 23, thereby extending the service life of the screw 23, keeping the surface of the screw 23 smooth and clean, and effectively enhancing the smoothness and flexibility between the screw 23 and the nut 21.

[0029] like Figure 2As shown, rubber pads 7 are provided on the inner sidewalls of the first fixing plate 10 and the second fixing plate 11; both rubber pads 7 are fixed to the middle of the first fixing plate 10 and the second fixing plate 11; during operation, when the first fixing plate 10 and the second fixing plate 11 are installed in the middle of the valve body 1, they contact and fit tightly with the surface of the valve body 1 through the rubber pads 7. The above structure effectively fills the small gap between the first fixing plate 10 and the second fixing plate 11 and the valve body 1, which can effectively reduce the pressure and wear between the first fixing plate 10 and the second fixing plate 11 and the surface of the valve body 1.

[0030] During operation, the valve body 1 is placed between the two first fixing plates 10. The second fixing plate 11 is rotated so that its end fits tightly against the end of the first fixing plate 10. While the second fixing plate 11 is fixing the valve body 1, the slider 14 is pressed, causing the two helical springs 16 to elastically contract. The locking block 12 enters the middle of the locking groove 15. After the ends of the second fixing plate 11 and the first fixing plate 10 are tightly fitted, the slider 14 is released and elastically ejected by the two helical springs 16. The end of the slider 14 enters the middle of the locking block 12, and the locking block 12 locks the slider 14, thus fixing the second fixing plate 11 and the first fixing plate 10. The height of valve body 1 is adjusted by adjusting component 2. During the operation of valve body 1, damping spring 18 absorbs vibrations during operation while supporting valve body 1. After fixing valve body 1, screw 23 is rotated. At this time, the end of screw 23 rotates in the middle of rotating seat 22, and screw 23 moves up and down in the middle of nut 21. Screw 23 is rotated to the specified position according to the required height. When valve body 1 vibrates, slide rod 24 slides in the middle of support rod 17 while nut 21 rotates. At the same time, damping spring 18 causes slide rod 24 to slide in the middle of support rod 17. For shock absorption, during the use of valve body 1, the second flow control plate 33 is rotated in the middle of the first flow control plate 3 as needed. When a larger flow rate of liquid is required, the second flow control plate 33 is rotated so that the through hole 34 corresponds to the small hole 32. When a smaller flow rate of liquid is required, the second flow control plate 33 is rotated so that the through hole 34 corresponds to the large hole 31, thereby controlling the flow inside valve body 1. During valve body 1 installation, after adjusting the second flow control plate 33, the filter screen 42 is first inserted from the end of valve body 1. The filter screen 42 is rotated so that the ring 41 enters the corresponding spiral 4, thereby fixing the filter screen 42 to valve body 1. At the end, after a period of use, the filter screen 42 is unscrewed for subsequent cleaning and replacement. When connecting the valve body 1 to the pipe, the sealing strip 5 is first placed at the end of the pipe. The sealing strip 5 adheres to the inner wall of the pipe, and the sealing strip 5 seals the valve body 1 to the end of the pipe. When the screw 23 rotates and moves in the middle of the nut 21, the end of the brush 61 adheres to the surface of the screw 23. The brush 61 cleans the surface of the screw 23 and the gaps. When the first fixing plate 10 and the second fixing plate 11 are installed in the middle of the valve body 1, they contact and adhere tightly to the surface of the valve body 1 through the rubber pad 7.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double-gate valve with a check mechanism, comprising a valve body (1); characterized in that: Two first fixing plates (10) are installed in the middle of the valve body (1); the two first fixing plates (10) are arranged opposite each other; a second fixing plate (11) is rotatably connected to the end of the first fixing plate (10); a locking block (12) is fixedly connected to the end of the second fixing plate (11); a fixing groove (13) is opened at the end of the first fixing plate (10); a slider (14) is slidably connected in the middle of the fixing groove (13); a locking groove (15) is opened in the middle of the slider (14); two helical springs (16) are fixedly connected to the end of the slider (14); the ends of the two helical springs (16) are fixedly connected to the end of the fixing groove (13); an adjustment component (2) is provided in the middle of the first fixing plate (10); a plurality of support rods (17) are provided in the middle of the adjustment component (2); a support plate (19) is fixedly connected to the end of the plurality of support rods (17); a plurality of damping springs (18) are fixedly connected to the top of the support plate (19); the damping springs (18) are arranged inside the support rods (17).

2. The double-gate valve with check mechanism according to claim 1, characterized in that: The adjusting assembly (2) includes a rotating seat (22); the rotating seat (22) is fixedly connected to the middle of the first fixed plate (10); a screw (23) is rotatably connected to the middle of the rotating seat (22); a nut (21) is threadedly connected to the middle of the screw (23); a plurality of slide rods (24) are hinged to the bottom of the nut (21); the plurality of slide rods (24) are slidably connected to the middle of the corresponding support rod (17); one end of the damping spring (18) is fixedly connected to the end of the slide rod (24).

3. A double-gate valve with a check mechanism according to claim 1, characterized in that: Two first flow control plates (3) are fixedly connected to the middle of the valve body (1); the two first flow control plates (3) are arranged opposite to each other; the first flow control plates (3) are fixedly connected to the valve body (1) near the end; multiple sets of large holes (31) and small holes (32) are opened in the middle of the first flow control plates (3); a second flow control plate (33) is rotatably connected to the middle of the first flow control plate (3); multiple sets of through holes (34) are opened in the middle of the second flow control plate (33).

4. A double-gate valve with a check mechanism according to claim 1, characterized in that: The valve body (1) has two spiral patterns (4) on its inner sidewall; the two spiral patterns (4) are located at the end of the valve body (1); a ring (41) is installed in the middle of the spiral pattern (4); a filter screen (42) is fixedly connected to the middle of the ring (41).

5. A double-gate valve with a check mechanism according to claim 1, characterized in that: Two sealing strips (5) are installed at the end of the valve body (1); the sealing strips (5) are fixed to the end of the valve body (1); the two sealing strips (5) are arranged opposite to each other.

6. A double-gate valve with a check mechanism according to claim 2, characterized in that: Two fixing rings (6) are fixedly connected to the middle of the nut (21); the two fixing rings (6) are arranged opposite to each other; a brush (61) is fixedly connected to the middle of the fixing ring (6).

7. A double-gate valve with a check mechanism according to claim 1, characterized in that: Both the first fixing plate (10) and the second fixing plate (11) are provided with rubber pads (7) on their inner sidewalls; both rubber pads (7) are fixed to the middle of the first fixing plate (10) and the second fixing plate (11).

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