Large-diameter forged steel gate valve with low opening and closing moment
By installing wear-resistant plates and spring structures on both sides of the gate plate, the connection gap problem caused by wear of the gate plate is solved, the service life of the gate plate is improved, and the filter net is blocked through the filter net and the cleaning brush structure, ensuring the reliability and filtering effect of the valve.
Patent Information
- Application Number
- CN202422208723.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The existing low opening and closing torque large diameter forged steel gate valves are likely to cause wear on both sides of the gate during the lifting and lowering of the gate, causing gaps at the connection and causing valve leakage.
Wear-resistant plate and spring structure are adopted. The wear-resistant plates on both sides of the gate are kept in contact with the inner wall of the valve body through the spring's resilience force, and the filter net and cleaning brush structure are combined to prevent the filter net from being blocked.
Effectively prevent connection gaps caused by wear of the gate, improve the service life of the gate, and maintain the filtering effect.
Smart Images
Figure CN223270655U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of forged steel gate valves, in particular to a large-diameter forged steel gate valve with low opening and closing torque. Background Art
[0002] Large-diameter forged steel gate valves with low opening and closing torques are large valves designed to operate in high-pressure environments and have low opening and closing torques. These valves are typically used in industries such as petroleum, chemicals, pharmaceuticals, fertilizers, and electric power to cut off or connect pipeline media. The low opening and closing torque design helps reduce the force required for operation, simplifies automated control, and may extend the service life of the valve.
[0003] The gate plate in the existing large-diameter forged steel gate valve with low opening and closing torque will cause wear on both sides of the gate plate when it is raised and lowered. Over time, it is easy to cause gaps in the connection, causing the valve to leak. In response to the above problems, the inventor proposed a large-diameter forged steel gate valve with low opening and closing torque to solve the above problems. Utility Model Content
[0004] In order to solve the problem that the gate plate in the existing large-diameter forged steel gate valve with low opening and closing torque will cause wear on both sides of the gate plate when it is raised and lowered, which may easily cause gaps in the connection over a long period of time, causing the valve to leak; the purpose of the utility model is to provide a large-diameter forged steel gate valve with low opening and closing torque.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a large-diameter forged steel gate valve with low opening and closing torque, comprising a valve seat, a valve body and a gate plate, the valve seat being fixedly mounted with a valve body, the valve body being slidingly sealed and clamped with a gate plate, two mirror-distributed cavities being opened in the gate plate, wear-resistant plates being slidingly mounted in both cavities, two telescopic rods distributed up and down being fixedly mounted in both cavities, and one end of the telescopic rod being fixedly connected to the inner side of the corresponding wear-resistant plate, the four telescopic rods being sleeved with a spring, and one end of the gas spring being fixedly connected to one side of the corresponding wear-resistant plate.
[0006] Preferably, a threaded rod is threadedly inserted into the valve body, and one end of the threaded rod is rotatably connected to the top of the gate plate. A turntable is fixedly installed on the top of the threaded rod, and a handle is rotatably installed on the upper surface of the turntable.
[0007] Preferably, a filter is fixedly installed in the valve body, and the filter is located in the water inlet of the valve body. A drive compartment is fixedly installed in the water inlet of the valve body, and a drain outlet is provided at the bottom end of the drive compartment close to the filter.
[0008] Preferably, a rotating shaft is rotatably installed in the drive compartment, and a plurality of fan blades distributed in a ring are fixedly installed at both ends of the rotating shaft. A drive shaft is rotatably installed on the side of the drive compartment close to the filter, and bevel gears are fixedly installed at one end of the drive shaft and the middle of the rotating shaft, and the two bevel gears are meshed. A cleaning brush is fixedly installed at one end of the drive shaft, and the bristles of the cleaning brush are in contact with the outside of the filter.
[0009] Compared with the prior art, the beneficial effects of the present invention are:
[0010] 1. In the present invention, when the wear-resistant plates on both sides of the gate are worn, the springs in the gate will rebound, so that the wear-resistant plates are always in contact with the inner wall of the valve body, thus avoiding the gaps at the joints caused by wear on both sides of the gate, which may cause leakage of the valve, thereby increasing the service life of the gate.
[0011] 2. In the utility model, when the fluid flows into the valve body from the water inlet of the valve body, the filter can intercept the impurities in the fluid. At the same time, the fluid drives the rotating shaft to rotate through the fan blades, and the rotating shaft drives the driving shaft to rotate through the bevel gear. The driving shaft drives the cleaning brush to rotate around the center of the filter to clean the mesh of the filter to prevent the mesh of the filter from being blocked and affecting the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the utility model;
[0015] Figure 3 For this utility model Figure 2 A schematic diagram of the structure at center A;
[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the gate of the utility model.
[0017] In the figure: 1. Valve seat; 2. Valve body; 3. Threaded rod; 4. Turntable; 5. Filter screen; 6. Drive chamber; 7. Cleaning brush; 8. Gate; 81. Cavity; 9. Wear-resistant plate; 10. Rotating shaft; 11. Bevel gear; 12. Fan blade; 13. Drive shaft; 14. Telescopic rod; 15. Spring. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] Example: Figure 1-4 As shown, the utility model provides a large-diameter forged steel gate valve with low opening and closing torque, including a valve seat 1, a valve body 2 and a gate plate 8. The valve body 2 is fixedly installed on the valve seat 1, and a gate plate 8 is slidingly sealed in the valve body 2. Two mirror-distributed cavities 81 are opened in the gate plate 8, and wear-resistant plates 9 are slidingly installed in the two cavities 81. Two telescopic rods 14 distributed up and down are fixedly installed in the two cavities 81, and one end of the telescopic rod 14 is fixedly connected to the inner side of the corresponding wear-resistant plate 9. Springs 15 are sleeved on the four telescopic rods 14, and one end of the gas spring 15 is fixedly connected to one side of the corresponding wear-resistant plate 9. First, the valve seat 1 is fixedly installed in the specified position, and then the valve is opened. Connecting pipes are respectively installed at both ends of the body 2, so that the fluid flows in from the water inlet of the valve body 2 and flows out from the water outlet. The gate plate 8 is raised and lowered in the valve body 2 to control the closing of the valve body 2 (the height of the gate plate 8 is greater than the inner diameter of the valve body 2). When the gate plate 8 is raised and lowered, friction is generated with the inner wall of the valve body 2. The long-term lifting and lowering of the gate plate 8 will cause wear on both sides of the gate plate 8. When the wear-resistant plates 9 on both sides of the gate plate 8 are worn, the rebound force of the spring 15 in the gate plate 8 makes the wear-resistant plates 9 always in contact with the inner wall of the valve body 2, thereby avoiding the gap at the connection caused by wear on both sides of the gate plate 8, which causes the valve to leak, thereby improving the service life of the gate plate 8.
[0020] A threaded rod 3 is inserted into the internal thread of the valve body 2 , and one end of the threaded rod 3 is rotatably connected to the top end of the gate plate 8 .
[0021] By adopting the above technical solution, the threaded rod 3 drives the gate plate 8 to rise and fall in the valve body 2.
[0022] A turntable 4 is fixedly mounted on the top end of the threaded rod 3 , and a handle is rotatably mounted on the upper surface of the turntable 4 .
[0023] By adopting the above technical solution, the handle is used to drive the turntable 4 to rotate, and the turntable 4 drives the threaded rod 3 to spirally rise and fall in the valve body 2.
[0024] A filter screen 5 is fixedly installed in the valve body 2 , and the filter screen 5 is located in the water inlet of the valve body 2 .
[0025] By adopting the above technical solution, the filter 5 can intercept impurities in the fluid, and the valve body 2 can be disassembled regularly to clean out the impurities retained inside it.
[0026] A driving chamber 6 is fixedly installed in the water inlet of the valve body 2 , and a drainage outlet is provided at the bottom end of the driving chamber 6 on one side close to the filter screen 5 .
[0027] By adopting the above technical solution, the fluid in the driving chamber 6 can be discharged through the drain port.
[0028] A rotating shaft 10 is rotatably mounted in the driving compartment 6 , and a plurality of fan blades 12 distributed in an annular manner are fixedly mounted on both ends of the rotating shaft 10 .
[0029] By adopting the above technical solution, when the fluid flows into the valve body 2 from the water inlet of the valve body 2, the fluid drives the rotating shaft 10 to rotate through the fan blades 12.
[0030] A driving shaft 13 is rotatably mounted on one side of the driving compartment 6 close to the filter screen 5 . Conical gears 11 are fixedly mounted on one end of the driving shaft 13 and the middle of the rotating shaft 10 , and the two conical gears 11 are meshed.
[0031] By adopting the above technical solution, the rotating shaft 10 drives the driving shaft 13 to rotate through the bevel gear 11.
[0032] A cleaning brush 7 is fixedly mounted on one end of the driving shaft 13 , and bristles of the cleaning brush 7 are in contact with the outer side of the filter 5 .
[0033] By adopting the above technical solution, the driving shaft 13 drives the cleaning brush 7 to rotate around the center of the filter 5 to clean the mesh of the filter 5, thereby preventing the mesh of the filter 5 from being blocked and affecting the filtering effect.
[0034] Working principle: When the present invention is in use, the valve seat 1 is first fixedly installed in the designated position, and then connecting pipes are respectively installed at both ends of the valve body 2, so that the fluid flows in from the water inlet of the valve body 2 and flows out from the water outlet. The handle is used to drive the turntable 4 to rotate, and the turntable 4 drives the threaded rod 3 to spirally rise and fall in the valve body 2, and the threaded rod 3 drives the gate plate 8 to rise and fall in the valve body 2 to control the closing of the valve body 2 (the height of the gate plate 8 is greater than the inner diameter of the valve body 2). When the gate plate 8 is rising and falling, friction is generated with the inner wall of the valve body 2. The long-term lifting and lowering of the gate plate 8 will cause wear on both sides of the gate plate 8. When the wear-resistant plates 9 on both sides of the gate plate 8 are worn, they are subjected to the rebound force of the spring 15 in the gate plate 8, so that the wear-resistant plates 9 are always in contact with the inner wall of the valve body 2, thereby avoiding the gap at the connection caused by wear on both sides of the gate plate 8, which causes the valve to leak, thereby improving the service life of the gate plate 8.
[0035] When the fluid flows into the valve body 2 from the water inlet of the valve body 2, the filter screen 5 can intercept the impurities in the fluid. The valve body 2 can be disassembled regularly to clean out the impurities retained inside it. At the same time, the fluid drives the rotating shaft 10 to rotate through the fan blades 12, and the rotating shaft 10 drives the driving shaft 13 to rotate through the bevel gear 11. The driving shaft 13 drives the cleaning brush 7 to rotate around the center of the filter screen 5 to clean the mesh of the filter screen 5 to prevent the mesh of the filter screen 5 from being blocked and affecting the filtering effect.
[0036] 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 large-diameter forged steel gate valve with low opening and closing torque, comprising a valve seat (1), a valve body (2) and a gate plate (8), characterized in that: A valve body (2) is fixedly mounted on the valve seat (1), a gate plate (8) is provided in the valve body (2) for sliding sealing, two mirror-distributed cavities (81) are provided in the gate plate (8), wear-resistant plates (9) are slidably mounted in the two cavities (81), two telescopic rods (14) distributed up and down are fixedly mounted in the two cavities (81), and one end of the telescopic rod (14) is fixedly connected to the inner side of the corresponding wear-resistant plate (9), and a spring (15) is sleeved on the four telescopic rods (14), and one end of the spring (15) is fixedly connected to one side of the corresponding wear-resistant plate (9).
2. A large-diameter forged steel gate valve with low opening and closing torque as claimed in claim 1, characterized in that: A threaded rod (3) is inserted into the internal thread of the valve body (2), and one end of the threaded rod (3) is rotatably connected to the top end of the gate plate (8).
3. A large-diameter forged steel gate valve with low opening and closing torque as claimed in claim 2, characterized in that: A turntable (4) is fixedly mounted on the top end of the threaded rod (3), and a handle is rotatably mounted on the upper surface of the turntable (4).
4. A large-diameter forged steel gate valve with low opening and closing torque as claimed in claim 1, characterized in that: A filter screen (5) is fixedly installed in the valve body (2), and the filter screen (5) is located in the water inlet of the valve body (2).
5. A large-diameter forged steel gate valve with low opening and closing torque as claimed in claim 1, characterized in that: A drive chamber (6) is fixedly installed in the water inlet of the valve body (2), and a drainage outlet is provided at the bottom end of the drive chamber (6) on a side close to the filter screen (5).
6. A large-diameter forged steel gate valve with low opening and closing torque as claimed in claim 5, characterized in that: A rotating shaft (10) is rotatably mounted in the driving chamber (6), and a plurality of fan blades (12) distributed in an annular manner are fixedly mounted on both ends of the rotating shaft (10).
7. A large-diameter forged steel gate valve with low opening and closing torque as claimed in claim 5, characterized in that: A drive shaft (13) is rotatably mounted on one side of the drive chamber (6) close to the filter screen (5), and a bevel gear (11) is fixedly mounted on one end of the drive shaft (13) and the middle of the rotating shaft (10), and the two bevel gears (11) are meshed.
8. A large-diameter forged steel gate valve with low opening and closing torque as claimed in claim 7, characterized in that: A cleaning brush (7) is fixedly mounted on one end of the driving shaft (13), and the bristles of the cleaning brush (7) are in contact with the outer side of the filter screen (5).