High-precision flow control slow-closing type check valve

Abstract

The utility model belongs to the technical field of slow closing type check valves, and particularly relates to a high-precision flow control slow closing type check valve which comprises a main body pipe. A first fixing block is fixedly connected to the side wall of the main body pipe; the interiors of the two first fixing blocks are rotationally connected with fixing rods. Second protruding blocks are fixedly connected to the side wall of the water stop disc, and a force bearing block is fixedly connected between the two second protruding blocks. A water stop block is fixedly connected to the side wall of the fixing ring; a first clamping block and a second clamping block are fixedly connected to the inner side wall of the main body pipe; a hydraulic cylinder is arranged at the top of the force bearing block; the check function of the valve is achieved by arranging the fixing rod, the opening and closing states of the valve are controlled by arranging the hydraulic cylinder, the flexibility and the stability degree of the high-precision flow control slow-closing type check valve are improved, the sealing effect of the valve is enhanced by arranging the water stop block, leakage of the valve is avoided, and the service life of the valve is prolonged. And the stability degree of the valve is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of slow-closing check valves, specifically a high-precision flow control slow-closing check valve. Background Technology

[0002] A slow-closing check valve, also known as a non-return valve, is designed to prevent backflow of media in a pipeline. The valve opens or closes automatically based on the flow and force of the media. Check valves are automatic valves and are primarily used in pipelines where the media flows in one direction only, preventing accidents.

[0003] Existing slow-closing check valves can be classified into lift check valves, swing check valves, and butterfly check valves according to their structural design. Lift check valves are check valves in which the valve disc slides along the vertical center line of the valve body. However, in existing check valve technology, when the flow rate of the medium flowing into the valve is large, the medium has a high flow velocity and a large instantaneous pressure, which quickly impacts the valve disc, making it difficult to maintain high flow control accuracy.

[0004] Therefore, this utility model provides a high-precision flow control slow-closing check valve. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A high-precision flow control slow-closing check valve of this utility model includes a main pipe; flanges are fixedly connected to both ends of the main pipe; a first fixing block is fixedly connected to the side wall of the main pipe, and two first fixing blocks are symmetrically arranged; a fixing rod is rotatably connected inside the two first fixing blocks, and a pipe sleeve is provided in the middle of the fixing rod; a first protrusion is fixedly connected to both ends of the pipe sleeve, and a water-stop plate is fixedly connected to the side wall of the first protrusion; a second protrusion is fixedly connected to the side wall of the water-stop plate, and a load-bearing block is fixedly connected between the two second protrusions; the water-stop plate… An internal fixing ring is fixedly connected, and a water-stop block is fixedly connected to the side wall of the fixing ring. Multiple water-stop blocks are arranged in a circumferential array. A first clamping block and a second clamping block are fixedly connected to the inner side wall of the main tube, and the dimensions of the first clamping block and the second clamping block correspond to those of the water-stop block. A hydraulic cylinder is provided on the top of the load-bearing block. This step achieves the check valve function by setting a fixing rod, and improves the flexibility and stability of the high-precision flow control slow-closing check valve by setting a hydraulic cylinder to control the opening and closing state of the valve. The water-stop block enhances the sealing effect of the valve, which helps to avoid valve leakage and improves the stability of the valve.

[0007] Preferably, a fixing platform is provided at the top of the main tube, and the fixing platform is positioned corresponding to the bearing block; a docking plate is fixedly connected to the side wall of the hydraulic cylinder, and the docking plate is positioned corresponding to the top dimension of the fixing platform; a bolt is provided between the fixing platform and the docking plate; an insert is fixedly connected to the bottom of the docking plate; a rubber ring is slidably connected to the side wall of the insert, and multiple rubber rings are correspondingly arranged; a hydraulic rod is fixedly connected to the output end of the hydraulic cylinder; this step installs the hydraulic cylinder by setting the docking plate, and by setting the insert and rubber ring and using the pressure deformation of the rubber ring to fill the gaps between the structures, it is beneficial to avoid liquid leakage, improve the stability and durability of the check valve, and provide convenience for the daily maintenance work of the staff, which helps to save maintenance costs.

[0008] Preferably, a second fixing block is fixedly connected to the side wall of the main tube, and two second fixing blocks are arranged correspondingly; a data copper tube is fixedly connected to the end of the second fixing block, and a flow meter is fixedly connected to the top of the data copper tube; a flow meter is fixedly connected to the end of the data copper tube away from the flow meter; this step provides convenience for the daily work of the staff by setting a flow meter to measure the internal liquid flow of the check valve, solves the problem of inconvenient viewing of the internal condition of the valve, and improves the practicality and applicability of the high-precision flow control slow-closing check valve.

[0009] Preferably, limiting grooves are formed on the side walls of the plurality of water-stop blocks, and two limiting grooves are set correspondingly; limiting rings are set inside the two limiting grooves; this step improves the synchronization rate of the plurality of water-stop blocks by setting limiting rings, which helps to solve the problem of offset of a single water-stop block, improves the overall integrity of the plurality of water-stop blocks, enhances the sealing performance of the check valve, and reduces the probability of leakage.

[0010] Preferably, a reinforcing plate is fixedly connected between the first protrusion and the water-stop plate, and multiple reinforcing plates are arranged in a linear array. This step increases the connection strength between components by setting reinforcing plates, which helps to prevent the first protrusion from separating from the water-stop plate, improves the durability of the check valve, and reduces safety hazards.

[0011] Preferably, the interior of the plurality of water-stop blocks is provided with through holes, and the through holes are set according to the size of the water-stop blocks; this step controls the degree of deformation of the water-stop blocks by opening through holes inside the water-stop blocks, which improves the flexibility of the check valve, helps to enhance the sealing effect, and reduces liquid leakage.

[0012] Preferably, a support column is fixed to the side wall of the two data copper tubes, and the end of the support column away from the data copper tube is fixed to the side wall of the main tube. This step, by setting the support column to support the data copper tube, helps to prevent the data copper tube from deforming due to its own weight, helps to maintain the stability of the flow meter, reduces shaking, and avoids data misreading.

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

[0014] 1. The high-precision flow control slow-closing check valve of this utility model achieves the check function of the valve by setting a fixed rod, improves the flexibility and stability of the high-precision flow control slow-closing check valve by setting a hydraulic cylinder to control the opening and closing state of the valve, and enhances the sealing effect of the valve by setting a water-stop block, which helps to avoid valve leakage and improves the stability of the valve.

[0015] 2. The high-precision flow control slow-closing check valve of this utility model uses a docking plate for the installation of the hydraulic cylinder, and uses an insert and a rubber ring to fill the gaps between the structures by utilizing the pressure deformation of the rubber ring. This helps to prevent liquid leakage, improves the stability and durability of the check valve, and provides convenience for the daily maintenance work of the staff, thus saving maintenance costs. Attached Figure Description

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

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

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

[0019] Figure 3 This is a schematic diagram of the structure of the first clamping block in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the insert in this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the water-stopping block of this utility model.

[0022] In the diagram: 1. Main pipe; 2. Flange; 3. First fixing block; 4. Second fixing block; 5. Data copper pipe; 6. Flow meter; 7. Support column; 8. Fixing platform; 9. Connecting plate; 10. Hydraulic cylinder; 11. Hydraulic rod; 12. Insert; 13. Rubber ring; 14. First clamping block; 15. Second clamping block; 16. Fixing rod; 17. Pipe sleeve; 18. First protrusion; 19. Reinforcing plate; 20. Second protrusion; 21. Bearing block; 22. Water-stop plate; 23. Water-stop block; 24. Fixing ring; 25. Limiting ring; 26. Through hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Specific implementation examples are given below.

[0025] like Figures 1 to 5As shown, a high-precision flow control slow-closing check valve according to an embodiment of this utility model includes a main pipe 1; flanges 2 are fixedly connected to both ends of the main pipe 1; first fixing blocks 3 are fixedly connected to the side wall of the main pipe 1, and the two first fixing blocks 3 are symmetrically arranged; fixing rods 16 are rotatably connected inside the two first fixing blocks 3, and a pipe sleeve 17 is provided in the middle of the fixing rod 16; first protrusions 18 are fixedly connected to both ends of the pipe sleeve 17, and a water-stop plate 22 is fixedly connected to the side wall of the first protrusions 18; second protrusions 20 are fixedly connected to the side wall of the water-stop plate 22, and a load-bearing block 21 is fixedly connected between the two second protrusions 20; a fixed... A fixed ring 24 is provided, and a water-stopping block 23 is fixedly connected to the side wall of the fixed ring 24. Multiple water-stopping blocks 23 are arranged in a circumferential array. A first clamping block 14 and a second clamping block 15 are fixedly connected to the inner side wall of the main body pipe 1, and the first clamping block 14 and the second clamping block 15 are set to correspond to the size of the water-stopping block 23. A hydraulic cylinder 10 is provided on the top of the load-bearing block 21. During operation, the operator controls the opening and closing state of the high-precision flow control slow-closing check valve through the hydraulic cylinder 10. During the process, whenever it is necessary to close the valve, the operator can drive the hydraulic cylinder 10 so that the output end of the hydraulic cylinder 10 applies pressure to the load-bearing block 21 fixed between the second protrusions 20. The pressure causes the pipe sleeve 17, the first protrusion 18, and the water-stop plate 22, which are rotatably connected to the fixed rod 16, to rotate. As the water-stop plate 22 rotates, multiple water-stop blocks 23 will rotate synchronously and make close contact with the main pipe 1 and the first clamping block 14 and the second clamping block 15 fixed to the inner wall of the main pipe 1, thereby closing the passage of the check valve. When it is necessary to open the passage of the valve, the operator can drive the hydraulic cylinder 10 to move its output end away from the load-bearing block 21. After the load-bearing block 21 loses its compression, the liquid can combine its own hydraulic pressure to make the water-stop plate 22 rotate, thereby causing the multiple water-stop blocks 23 to lose their contact with the main pipe 1 and the first clamping block. 14. The second clamping block 15 contacts, allowing free passage through the valve. Two symmetrically arranged first fixing blocks 3 serve to fix the fixing rod 16, and the fixing ring 24 serves to fix multiple water-stop blocks 23. Workers can complete the valve installation using the flanges 2 fixed to both ends. This step achieves the valve's check valve function by setting the fixing rod 16, and the opening and closing state of the valve is controlled by the hydraulic cylinder 10, improving the flexibility and stability of this high-precision flow control slow-closing check valve. The water-stop blocks 23 enhance the valve's sealing effect, helping to prevent valve leakage and improving valve stability.

[0026] like Figures 1 to 4As shown, a fixed platform 8 is provided at the top of the main body tube 1, and the fixed platform 8 is positioned corresponding to the bearing block 21; a connecting plate 9 is fixedly connected to the side wall of the hydraulic cylinder 10, and the connecting plate 9 is positioned corresponding to the top size of the fixed platform 8; a bolt is provided between the fixed platform 8 and the connecting plate 9; an insert 12 is fixedly connected to the bottom of the connecting plate 9; a rubber ring 13 is slidably connected to the side wall of the insert 12, and multiple rubber rings 13 are correspondingly arranged; a hydraulic rod 11 is fixedly connected to the output end of the hydraulic cylinder 10; during operation, the operator can fix the hydraulic cylinder 10 to the top of the main body tube 1 with bolts, aligning it with the bearing block 21, thereby realizing its operation of controlling the opening and closing state of the valve. During the process, the operator can fit multiple rubber rings 13 on the bottom of the insert 12 and insert the insert 12 into the interior of the fixed platform 8, thus controlling the opening and closing state of the valve. After the insert 13 is inserted into the fixed platform 8, the operator can fix the fixed platform 8 and the docking plate 9 with bolts. As the bolts are fixed, the insert 12 and the fixed platform 8 apply pressure to the multiple rubber rings 13 that are slidably connected to the side wall of the insert 12, causing them to deform. The multiple rubber rings 13 can fill the gap between the insert 12 and the fixed platform 8 through their own deformation, thereby preventing liquid leakage. The hydraulic rod 11 is the output end of the hydraulic cylinder 10. This step involves installing the hydraulic cylinder 10 by setting the docking plate 9. By setting the insert 12 and the rubber rings 13 and using the pressure deformation of the rubber rings 13 to fill the gap between the structures, it is beneficial to avoid liquid leakage, improve the stability and durability of the check valve, and provide convenience for the operator's daily maintenance work, which helps to save maintenance costs.

[0027] like Figure 1 As shown, a second fixing block 4 is fixedly connected to the side wall of the main body pipe 1, and two second fixing blocks 4 are set correspondingly; a data copper pipe 5 is fixedly connected to the end of the second fixing block 4, and a flow meter 6 is fixedly connected to the top of the data copper pipe 5; a flow meter is fixedly connected to the end of the data copper pipe 5 away from the flow meter 6; during operation, the operator can judge the working status of the check valve by checking the corresponding data of the two flow meters 6. During the process, the flow meter fixed to the end of the two data copper pipes 5 is located inside the main body pipe 1, and the data it measures can be transmitted to the flow meter 6 through the data copper pipe 5 and the data line inside the data copper pipe 5, and is specifically displayed by the flow meter 6. The second fixing block 4 serves to fix the data copper pipe 5. This step provides convenience for the operator's daily work by setting the flow meter to measure the internal liquid flow of the check valve, solves the problem of inconvenient viewing of the internal condition of the valve, and improves the practicality and applicability of the high-precision flow control slow-closing check valve.

[0028] like Figure 5As shown, limit grooves are provided on the side walls of multiple water-stop blocks 23, with two limit grooves corresponding to each other; limit rings 25 are provided inside the two limit grooves; during operation, the operator can install the limit rings 25 in the limit grooves on the side walls of the multiple water-stop blocks 23. Whenever the water-stop block 23 rotates along with the water-stop disc 22, the two limit rings 25 can limit the water-stop block 23 to rotate synchronously. This step improves the synchronization rate of the multiple water-stop blocks 23 by setting the limit rings 25, which helps to solve the problem of the offset of a single water-stop block 23, improves the overall integrity of the multiple water-stop blocks 23, enhances the sealing performance of the check valve, and reduces the probability of leakage.

[0029] like Figure 2 and Figure 5 As shown, a reinforcing plate 19 is fixed between the first protrusion 18 and the water-stop plate 22, and multiple reinforcing plates 19 are arranged in a linear array. During operation, the multiple reinforcing plates 19 fixed between the first protrusion 18 and the water-stop plate 22 can increase the contact area between the first protrusion 18 and the water-stop plate 22, thereby improving the fixing firmness of the first protrusion 18 and the water-stop plate 22. This step increases the connection strength between the components by setting the reinforcing plates 19, which helps to prevent the first protrusion 18 and the water-stop plate 22 from separating, improves the durability of the check valve, and reduces safety hazards.

[0030] like Figure 5 As shown, multiple water-stop blocks 23 have through holes 26 inside, and the through holes 26 are set according to the size of the water-stop blocks 23. During operation, whenever the water-stop block 23 comes into contact with the main pipe 1, the first clamping block 14, and the second clamping block 15, the water-stop block 23 can achieve a greater degree of deformation by means of the through holes 26 inside, thereby expanding the contact area. The operator can control the degree of deformation of the water-stop block 23 by changing the size of the through holes 26. This step, by controlling the degree of deformation of the water-stop block 23 by opening through holes 26 inside the water-stop block 23, improves the flexibility of the check valve, which is conducive to enhancing the sealing effect and reducing liquid leakage.

[0031] like Figure 1 As shown, support columns 7 are fixed to the side walls of the two data copper tubes 5, and the ends of the support columns 7 away from the data copper tubes 5 are fixed to the side walls of the main tube 1. During operation, the support columns 7 fixed between the data copper tubes 5 and the main tube 1 can provide support for the data copper tubes 5, preventing them from bending and deforming due to their own weight or external forces. This step of supporting the data copper tubes 5 by setting the support columns 7 helps to prevent the data copper tubes 5 from deforming due to their own weight, helps to maintain the stability of the flow meter 6, reduces shaking, and avoids data misreading.

[0032] During operation, the operator controls the opening and closing state of the high-precision flow control slow-closing check valve using the hydraulic cylinder 10. Whenever the valve needs to be closed, the operator drives the hydraulic cylinder 10, causing its output end to apply pressure to the bearing block 21 fixed between the second protrusions 20. This causes the pipe sleeve 17, the first protrusion 18, and the water-stop disc 22, which are rotatably connected to the fixed rod 16, to rotate. As the water-stop disc 22 rotates, multiple water-stop blocks 23 rotate synchronously and come into close contact with the main pipe 1 and the first clamping block 14 and the second clamping block 15 fixed to the inner wall of the main pipe 1, thereby closing the check valve's passage. To open the valve's passage, the operator drives the hydraulic cylinder 10, moving its output end away from the bearing block 21. After the force block 21 and the load-bearing block 21 lose their compression, the liquid can combine its own hydraulic pressure to make the water-stop plate 22 rotate, thereby causing multiple water-stop blocks 23 to lose contact with the main pipe 1, the first clamping block 14, and the second clamping block 15, thus allowing them to pass freely through the valve. The two symmetrically arranged first fixing blocks 3 serve to fix the fixing rod 16, and the fixing ring 24 serves to fix multiple water-stop blocks 23. The operator can complete the valve installation work using the flanges 2 fixed at both ends. The operator can fix the hydraulic cylinder 10 to the top of the main pipe 1 with bolts, aligning it with the load-bearing block 21, thus realizing its function of controlling the opening and closing of the valve. During the process, the operator can fit multiple rubber rings 13 on the bottom of the insert 12 and... After inserting the insert 12 into the fixed platform 8 and the rubber rings 13 into the fixed platform 8, the operator can fix the fixed platform 8 and the docking plate 9 with bolts. As the bolts are fixed, the insert 12 and the fixed platform 8 apply pressure to the multiple rubber rings 13 that are slidably connected to the side wall of the insert 12, causing them to deform. The multiple rubber rings 13 can fill the gap between the insert 12 and the fixed platform 8 through their own deformation, thereby preventing liquid leakage. The hydraulic rod 11 is the output end of the hydraulic cylinder 10. The operator can judge the working status of the check valve by checking the corresponding data of the two flow meters 6. During the process, the flow meters fixed to the ends of the two data copper pipes 5 are located inside the main body pipe 1, and the data they measure can be transmitted through the flow meters. The data copper pipe 5 and the data cable inside the data copper pipe 5 are transmitted to the flow meter 6, which displays the data. The second fixing block 4 serves to fix the data copper pipe 5. The operator can install the limiting ring 25 in the limiting groove on the side wall of the multiple water-stop blocks 23. Whenever the water-stop block 23 rotates with the water-stop plate 22, the two limiting rings 25 can limit the water-stop block 23 to rotate synchronously. The multiple reinforcing plates 19 fixed between the first protrusion 18 and the water-stop plate 22 can increase the contact area between the first protrusion 18 and the water-stop plate 22, thereby improving the fixing firmness of the first protrusion 18 and the water-stop plate 22. Whenever the water-stop block 23 comes into contact with the main pipe 1, the first clamping block 14, and the second clamping block 15,The water-stop block 23 can achieve a greater degree of deformation due to the through holes 26 inside, thereby increasing the contact area. Workers can control the degree of deformation of the water-stop block 23 by changing the size of the through holes 26. The support column 7, fixed between the data copper pipe 5 and the main pipe 1, provides support for the data copper pipe 5, preventing it from bending and deforming due to its own weight or external forces.

[0033] 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 high-precision flow control slow-closing check valve, comprising a main body pipe (1); characterized in that: Flanges (2) are fixed to both ends of the main tube (1); first fixing blocks (3) are fixed to the side wall of the main tube (1), and the two first fixing blocks (3) are symmetrically arranged; fixing rods (16) are rotatably connected inside the two first fixing blocks (3), and a pipe sleeve (17) is provided in the middle of the fixing rods (16); first protrusions (18) are fixed to both ends of the pipe sleeves (17), and a water-stop plate (22) is fixed to the side wall of the first protrusions (18); a second protrusion (20) is fixed to the side wall of the water-stop plate (22), and A load-bearing block (21) is fixed between the two second protrusions (20); a fixing ring (24) is fixed inside the water-stopping plate (22), and a water-stopping block (23) is fixed on the side wall of the fixing ring (24), and multiple water-stopping blocks (23) are arranged in a circumferential array; a first clamping block (14) and a second clamping block (15) are fixed on the inner side wall of the main tube (1), and the first clamping block (14) and the second clamping block (15) are set to the size of the water-stopping block (23); a hydraulic cylinder (10) is provided on the top of the load-bearing block (21).

2. The high-precision flow control slow-closing check valve according to claim 1, characterized in that: The top of the main tube (1) is provided with a fixed platform (8), and the fixed platform (8) is positioned corresponding to the bearing block (21); a docking plate (9) is fixedly connected to the side wall of the hydraulic cylinder (10), and the docking plate (9) is positioned corresponding to the top size of the fixed platform (8); a bolt is provided between the fixed platform (8) and the docking plate (9); an insert (12) is fixedly connected to the bottom of the docking plate (9); a rubber ring (13) is slidably connected to the side wall of the insert (12), and multiple rubber rings (13) are provided accordingly; a hydraulic rod (11) is fixedly connected to the output end of the hydraulic cylinder (10).

3. A high-precision flow control slow-closing check valve according to claim 2, characterized in that: A second fixing block (4) is fixedly connected to the side wall of the main tube (1), and two second fixing blocks (4) are arranged correspondingly; a data copper tube (5) is fixedly connected to the end of the second fixing block (4), and a flow meter (6) is fixedly connected to the top of the data copper tube (5); a flow meter is fixedly connected to the end of the data copper tube (5) away from the flow meter (6).

4. A high-precision flow control slow-closing check valve according to claim 1, characterized in that: Limiting grooves are provided on the side walls of the multiple water-stopping blocks (23), and two limiting grooves are provided correspondingly; limiting rings (25) are provided inside the two limiting grooves.

5. A high-precision flow control slow-closing check valve according to claim 1, characterized in that: A reinforcing plate (19) is fixed between the first protrusion (18) and the water-stop plate (22), and multiple reinforcing plates (19) are arranged in a linear array.

6. A high-precision flow control slow-closing check valve according to claim 4, characterized in that: The interior of each of the multiple water-stop blocks (23) is provided with through holes (26), and the through holes (26) are configured to correspond to the size of the water-stop blocks (23).

7. A high-precision flow control slow-closing check valve according to claim 3, characterized in that: Support columns (7) are fixed to the side walls of the two data copper tubes (5), and the end of the support column (7) away from the data copper tubes (5) is fixed to the side wall of the main tube (1).

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