A pressure reducing valve with a sliding element inside

Abstract

The present invention discloses a pressure reducing valve with a sliding element provided inside, comprising a valve body and a screw rod, one end of the screw rod penetrates through the valve body and extends to the inside, the outside of the screw rod is respectively threadedly connected with a fixing block and a first limiting plate, both sides of the fixing block and both sides of the first limiting plate are fixedly connected to the inner wall of the valve body, the outside of the screw rod is respectively sleeved with a fixing cover and a first spring, one side of the second limiting plate is clamped with a filter plate, one side of the filter plate is clamped with a clamping block, the clamping block is slidably connected to one side of the fixing plate, one side of the valve body is located outside the notch and is rotatably connected with a sealing plate, the valve body and the sealing plate are locked by a lock, the purpose of the present invention is to provide a pressure reducing valve with a sliding element provided inside, through the design of the device, filtering of the pressure reducing valve is achieved in the working process of the pressure reducing valve, the blockage rate is reduced, the existing pressure reducing valve is optimized, so as to solve the problems raised in the above-mentioned background technology.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure reducing valves, and in particular relates to a pressure reducing valve with a sliding element arranged inside. Background Art

[0002] The pressure reducing valve is a valve that reduces the inlet pressure to a required outlet pressure through regulation, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From the viewpoint of fluid mechanics, the pressure reducing valve is a throttling element with variable local resistance, that is, by changing the throttling area, the flow rate and the kinetic energy of the fluid are changed, resulting in different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the pressure after the valve is balanced with the spring force by the regulation of the control and regulation system, so that the pressure after the valve is kept constant within a certain error range. The pressure reducing valve reduces the water pressure by the local resistance of the flow channel inside the valve to the water flow. The range of water pressure drop is automatically adjusted by the inlet and outlet water pressure difference on both sides of the film or piston connecting the valve disc. The fixed ratio pressure reduction principle is to use the water pressure ratio control of the floating piston in the valve body. The pressure reduction ratio at the inlet and outlet is proportional to the inlet and outlet pressure. The pressure reducing valve is inversely proportional to the piston area ratio on the mouth side. This pressure reducing valve works smoothly and without vibration. There is no spring in the valve body, so there is no worry about spring rust and metal fatigue failure. The sealing performance is good and there is no leakage, thus reducing both dynamic pressure (when water flows) and static pressure (when the flow rate is 0). In particular, it does not affect the water flow rate while reducing the pressure. Working principle: The pressure reducing valve controls the opening of the opening and closing parts in the valve body to adjust the flow of the medium and reduce the pressure of the medium. At the same time, it uses the effect of the pressure behind the valve to adjust the opening of the opening and closing parts to keep the pressure behind the valve within a certain range, and sprays cooling water into the valve body or behind the valve to reduce the temperature of the medium. This valve is called a pressure reducing and temperature reducing valve, which is included in the quick and easy automatic selection of pressure reducing valves. The characteristic of this valve is that it keeps the outlet pressure and temperature values ​​within a certain range when the inlet pressure is constantly changing.

[0003] However, when the pressure reducing valve is in use, if the medium introduced into the pressure reducing valve contains impurities such as mud and sand, the sliding valve seat and the sliding valve groove of the pressure reducing valve are prone to wear after working for a long time, which in turn causes the worn sliding valve seat to easily stick to mud and sand and other debris when sliding, causing the sliding valve seat to become blocked or difficult to slide in the sliding valve groove, thereby affecting the normal operation of the pressure reducing valve and requiring the pressure reducing valve to be replaced. For this reason, we propose a pressure reducing valve with a sliding element inside to solve the problems existing in the prior art. Summary of the invention

[0004] The purpose of the present invention is to provide a pressure reducing valve with a sliding element inside. Through the design of the device, filtering is achieved during the working process of the pressure reducing valve, reducing its blockage rate, optimizing the existing pressure reducing valve, and solving the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pressure reducing valve with a sliding element inside, comprising a valve body and a screw rod, one end of the screw rod penetrates the valve body and extends to the inside, the outside of the screw rod is respectively threadedly connected with a fixing block and a first limit plate, both sides of the fixing block and both sides of the first limit plate are fixedly connected to the inner wall of the valve body, the outside of the screw rod is respectively sleeved with a fixing cover and a first spring, one end of the first spring is fixedly connected to the upper surface of the fixing block, the other end of the first spring is arranged in contact with the inner bottom surface of the fixing cover, one end of the screw rod is fixedly connected to the fixing block, the bottom surface of the valve body is fixedly connected to the second spring, one end of the second spring is fixedly connected to the second limit plate, the The unclamping said control button is used to check the engagement of the first and second control plates, the second end of which is connected to the control bar, and the second end of the control bar is connected to the control bar by a locking mechanism, wherein the locking mechanism comprises a first locking slit and a second locking slit.

[0006] Preferably, a second threaded hole is provided on one side of the first limiting plate at a threaded connection position of the screw rod, and a handle is fixedly connected to one end of the screw rod.

[0007] Preferably, a first threaded hole is provided on one side of the fixing block at a threaded connection position of the screw rod.

[0008] Preferably, an input port and an output port are respectively provided on two sides of the valve body.

[0009] Preferably, first sliding blocks are fixedly connected to both sides of the second limit plate, and first sliding grooves are symmetrically provided on the inner wall of the valve body, and the first sliding blocks are clearance-matched with the first sliding grooves.

[0010] Preferably, a second sliding block is fixedly connected to one side of the clamping block, a second sliding groove is provided on one side of the fixing plate, and the second sliding block is clearance-matched with the second sliding groove.

[0011] Preferably, third sliding blocks are symmetrically fixedly connected on both sides of the second fixing rod, and third sliding grooves are provided on one side of the two groups of support plates, and the third sliding blocks are clearance-matched with the third sliding grooves.

[0012] Preferably, a hinge is symmetrically fixedly connected to one side of the valve body, and the valve body is rotatably connected to one side of the sealing cover via the hinge.

[0013] Preferably, a first groove is provided on one side of the second limiting plate at a position for clamping the filter plate, and one side of the filter plate is fitted in the first groove.

[0014] Preferably, the steel ball is semi-arc-shaped, a second groove is provided on one side of the fixing block, the fixing block is fitted on one side of the steel ball through the second groove, and the second groove is arc-shaped.

[0015] Technical effects and advantages of the present invention: Compared with the prior art, the pressure reducing valve provided with a sliding element inside the present invention has the following advantages:

[0016] 1. Design of the valve body. The input port and output port of the device are connected to the outside respectively. The screw rod is manually rotated clockwise to create a gap between the fixed block and the steel ball through the rise of the screw rod to achieve the opening function. The adjustment function is achieved by adjusting the different distances between the fixed block and the steel ball. The screw rod is manually rotated counterclockwise to make the fixed block and the steel ball fit together to achieve the closing function. Real-time filtration is achieved through the filter plate to prevent the device from being blocked after a certain period of use. The sealing plate is opened manually by opening the lock, and the filter plate is taken out through the gap to achieve its cleaning and replacement function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0018] Figure 2 For the present invention Figure 1 The enlarged structural diagram of part A in the middle;

[0019] Figure 3 For the present invention Figure 1 The enlarged structural diagram of part B in the middle;

[0020] Figure 4 It is a schematic diagram of the main structure of the pressure reducing valve of the present invention;

[0021] Figure 5 It is a schematic diagram of the enlarged front and cross-sectional structure of the connection relationship between the second fixing rod and the support plate of the pressure reducing valve of the present invention.

[0022] In the figure: 1, valve body; 2, fixing block; 3, first threaded hole; 4, first limiting plate; 5, second threaded hole; 6, fixing block; 7, steel ball; 8, first fixing rod; 9, screw rod; 10, handle; 11, fixing cover; 12, first spring; 13, input port; 14, output port; 15, second limiting plate; 16, first slider; 17, first slide groove; 18, filter plate; 20, clamping block; 21, second slider; 22, second slide groove; 23, fixing plate; 25, first groove; 26, second spring; 27, second fixing rod; 28, support plate; 29, third slider; 30, third slide groove; 32, sealing plate; 33, second groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention provides Figure 1-5 A technical solution shown: a pressure reducing valve with a sliding element inside, including a valve body 1 and a screw rod 9, an input port 13 and an output port 14 are respectively opened on both sides of the valve body 1, the valve body 1 is connected to the outside through the input port 13 and the output port 14, and the pressure reducing regulating function is realized through the valve body 1, gas or liquid can be input through the input port 13, and the gas or liquid output through the output port 14 is the gas or object after the pressure reduction is regulated;

[0025] One end of the screw rod 9 passes through the valve body 1 and extends to the inside, and the screw rod 9 is respectively threadedly connected with a fixing block 2 and a first limit plate 4 on the outside, and a second threaded hole 5 is opened on one side of the first limit plate 4 at the threaded connection position of the screw rod 9, and a handle 10 is fixedly connected to one end of the screw rod 9, and a first threaded hole 3 is opened on one side of the fixing block 2 at the threaded connection position of the screw rod 9. Both sides of the fixing block 2 and both sides of the first limit plate 4 are fixedly connected to the inner wall of the valve body 1. The screw rod 9 is manually rotated by the handle 10 to facilitate the rotation of the screw rod 9. Since the fixing block 2 and the first limit plate 4 are both fixedly connected to the inner wall of the valve body 1 and the threaded connection design is used, the screw rod 9 is raised when the screw rod 9 is rotated clockwise, and the screw rod 9 is lowered when the screw rod 9 is rotated counterclockwise. The pressure reduction is adjusted by the rotation of the screw rod 9, and the overall operation is simple and convenient.

[0026] The outside of the screw rod 9 is respectively sleeved with a fixed cover 11 and a first spring 12. When the screw rod 9 rises and falls, the fixed cover 11 rises and falls together; one end of the first spring 12 is fixedly connected to the upper surface of the fixed block 2, and the other end of the first spring 12 is arranged in contact with the inner bottom surface of the fixed cover 11. When the fixed cover 11 falls to a certain position, the first spring 12 is compressed to prevent the input gas or water from being too large, and the fixed block 6 and the steel ball 7 from being opened, resulting in the output gas or water not being adjusted and decompressed. When the fixed cover 11 rises, the first spring 12 is released, which improves the service life of the first spring 12 to a certain extent, and indirectly improves the service life of the device;

[0027] One end of the screw rod 9 is fixedly connected to a fixed block 6, and the pressure reduction is adjusted by the distance between the fixed block 6 and the steel ball 7. When the fixed block 6 and the steel ball 7 are fitted together, gas or liquid cannot be output through the output port 14. When the fixed block 6 and the steel ball 7 are not fitted together to produce a distance, the regulated gas or liquid can be output through the output port 14; a second spring 26 is fixedly connected to the inner bottom surface of the valve body 1, and a second limit plate 15 is fixedly connected to one end of the second spring 26. Both sides of the second limit plate 15 are slidably connected to the inner wall of the valve body 1, and both sides of the second limit plate 15 are fixedly connected to the first slider 16. The inner wall of the valve body 1 is symmetrically provided with a first slide groove 17, and the first slider 16 is clearance-matched with the first slide groove 17. The sliding connection design facilitates the compression and stabilization of the second spring 26, and also has a sealing effect to prevent direct output of gas or liquid;

[0028] The first fixing rod 8 and the second fixing rod 27 are fixedly connected to the two sides of the second limiting plate 15, and the top of the first fixing rod 8 is fixedly connected to the steel ball 7. One side of the steel ball 7 is fitted with the inner bottom surface of the fixing block 6. The steel ball 7 is semi-arc-shaped. A second groove 33 is opened on one side of the fixing block 6. The fixing block 6 is fitted on one side of the steel ball 7 through the second groove 33. The second groove 33 is an arc-shaped design. Through the fitting design, the input gas or water is prevented from being directly output, and a sealing effect is achieved. Through the arc-shaped design, it is easy to fit;

[0029] The inner bottom surface of the valve body 1 is symmetrically fixedly connected with a support plate 28, the second fixed rod 27 is slidably connected between the two groups of support plates 28, and the second fixed rod 27 is symmetrically fixedly connected with a third slider 29 on both sides. A third slide groove 30 is provided on one side of the two groups of support plates 28, and the third slider 29 and the third slide groove 30 are clearance-matched. The clearance-matching between the third slider 29 and the third slide groove 30 facilitates the stabilization of the position of the second spring 26, and prevents the position of the second spring 26 from being offset, which causes the overall failure of the device;

[0030] One side of the first limiting plate 4 is fixedly connected to a fixing plate 23. One side of the second limiting plate 15 is clamped with a filter plate 18. A first groove 25 is formed on one side of the second limiting plate 15 at the position where the filter plate 18 is clamped. One side of the filter plate 18 is fitted in the first groove 25. The input gas or liquid is filtered through the filter plate 18 to prevent the device from being blocked after being used for a certain period of time, optimizing the existing pressure reducing valve device. Through the clamping design, it is convenient to clean and replace the filter plate 18 after it works for a certain period of time, improving the filtering effect;

[0031] One side of the filter plate 18 is clamped with a clamping block 20. The clamping block 20 is slidably connected to one side of the fixing plate 23. One side of the clamping block 20 is fixedly connected to a second slider 21. A second chute 22 is formed on one side of the fixing plate 23. The second slider 21 is in clearance fit with the second chute 22, improving the sliding connection design to achieve all-round filtering. Whether the device is turned on or off, real-time filtering is realized, which improves the practicality of the device to a certain extent. The clamping block 20 is designed in a U shape, and one side of the filter plate 18 is fitted inside the clamping block 20;

[0032] A notch is formed on one side of the valve body 1. A sealing plate 32 is rotatably connected to one side of the valve body 1 outside the notch. The valve body 1 and the sealing plate 32 are locked by a lock. Two hinges are symmetrically and fixedly connected to one side of the valve body 1. The valve body 1 is rotatably connected to one side of the sealing plate 32 through the hinges. After the filter plate 18 is used for a certain period of time, an operator rotates the sealing plate 32 manually through the lock, and manually takes out the filter plate 18 to clean and replace it, preventing the blockage of the filter plate 18 from affecting the use of the device, improving the practicality, and optimizing the existing anti-filtering design of the pressure reducing valve, which is convenient for cleaning and replacement.

[0033] Working principle or structural principle: when in use, the device is connected to the outside through the input port 13 and the output port 14 respectively, gas or liquid is input into the device through the input port 13, and the gas or liquid after adjustment and decompression is output through the output port 14; when working, the screw rod 9 is manually rotated through the handle 10, and the screw rod 9 is raised when the screw rod 9 is rotated clockwise. At this time, the fixed block 6 and the steel ball 7 are no longer in a close fit, and a gap is gradually generated and the gap slowly increases. The gas or liquid input through the input port 13 flows to the output port 14 through the gap, and is transported to the outside where it is needed through the output port 14, completing the regulation of the gas or liquid. When the gap between the fixed block 6 and the steel ball 7 is larger, the gas or liquid output from the output port 14 is larger, and when the gap between the fixed block 6 and the steel ball 7 is smaller, the gas or liquid output from the output port 14 is smaller; when the screw rod 9 is rotated counterclockwise, the screw rod 9 is lowered, and the lowering of the fixed block 6 is driven by the lowering of the screw rod 9. When the fixed block 6 drops to a certain position, the fixed block 6 and the steel ball 7 are fitted and arranged, and there is no gas or liquid output from the output port 14, and at this time, the device closes the regulating decompression function; during the regulating decompression process of the device, the gas or liquid always passes through the filter plate 18 for regulating decompression, and the filter plate 18 is used to filter the input gas or liquid, and the filtering function is realized as a whole, avoiding the problem of clogging after the device is used for a certain period of time. When the filter plate 18 has been used for a certain period of time, the sealing plate 32 is manually opened by rotating the lock, the filter plate 18 is manually taken out, and the impurities filtered on its surface are cleaned or the filter plate 18 is replaced. When installing the filter plate 18, the two sides of the filter plate 18 are respectively fitted with the first groove 25 and the block 20, the sealing plate 32 is manually rotated, and it is locked by the lock. The clamping design of the filter plate 18 is convenient for installation and disassembly, and the clamping design optimizes the problem that the existing pressure reducing valve filter device is not convenient for cleaning and replacement.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure reducing valve with a sliding element inside, comprising a valve body (1) and a screw rod (9), characterized in that: One end of the screw rod (9) passes through the valve body (1) and extends to the inside. The screw rod (9) is threadedly connected to a fixed block (2) and a first limit plate (4) on the outside. Both sides of the fixed block (2) and both sides of the first limit plate (4) are fixedly connected to the inner wall of the valve body (1). The screw rod (9) is sleeved with a fixed cover (11) and a first spring (12) on the outside. One end of the first spring (12) is fixedly connected to the upper surface of the fixed block (2). The other end of the first spring (12) is arranged to fit the inner bottom surface of the fixed cover (11). One end of the screw rod (9) is fixedly connected to a fixed block (6). The inner bottom surface of the valve body (1) is fixedly connected to a second spring (26). One end of the second spring (26) is fixedly connected to a second limit plate (15). Both sides of the second limit plate (15) are slidably connected to the inner wall of the valve body (1). The second limit plate (15) is slidably connected to the inner wall of the valve body (1). ) are respectively fixedly connected to a first fixing rod (8) and a second fixing rod (27) on both sides; a steel ball (7) is fixedly connected to the top of the first fixing rod (8); one side of the steel ball (7) is arranged to fit the inner bottom surface of the fixing block (6); a support plate (28) is symmetrically fixedly connected to the inner bottom surface of the valve body (1); the second fixing rod (27) is slidably connected between the two groups of support plates (28); one side of the first limiting plate (4) is fixedly connected to a fixing plate (23); one side of the second limiting plate (15) is clamped with a filter plate (18); one side of the filter plate (18) is clamped with a clamping block (20); the clamping block (20) is slidably connected to one side of the fixing plate (23); a notch is opened on one side of the valve body (1); a sealing plate (32) is rotatably connected to one side of the valve body (1) outside the notch; the valve body (1) is locked with the sealing plate (32) by a lock.

2. A pressure reducing valve with a sliding element inside according to claim 1, characterized in that: A second threaded hole (5) is provided on one side of the first limit plate (4) at a position where the screw rod (9) is threadedly connected, and a handle (10) is fixedly connected to one end of the screw rod (9).

3. A pressure reducing valve with a sliding element inside according to claim 1, characterized in that: A first threaded hole (3) is provided on one side of the fixing block (2) at a position where the screw rod (9) is threadedly connected.

4. A pressure reducing valve with a sliding element inside according to claim 1, characterized in that: An input port (13) and an output port (14) are respectively provided on two sides of the valve body (1).

5. A pressure reducing valve with a sliding element inside according to claim 1, characterized in that: The second limit plate (15) is fixedly connected to first sliding blocks (16) on both sides, the inner wall of the valve body (1) is symmetrically provided with first sliding grooves (17), and the first sliding blocks (16) are clearance-matched with the first sliding grooves (17).

6. A pressure reducing valve with a sliding element inside according to claim 1, characterized in that: A second sliding block (21) is fixedly connected to one side of the clamping block (20), a second sliding groove (22) is provided on one side of the fixing plate (23), and the second sliding block (21) is clearance-matched with the second sliding groove (22).

7. A pressure reducing valve with a sliding element inside according to claim 1, characterized in that: The second fixing rod (27) is symmetrically fixedly connected to the third sliding blocks (29) on both sides, and the two groups of support plates (28) are each provided with a third sliding groove (30) on one side, and the third sliding blocks (29) are clearance-matched with the third sliding groove (30).

8. The pressure reducing valve with a sliding element inside according to claim 1, characterized in that: A hinge is symmetrically fixedly connected to one side of the valve body (1), and the valve body (1) is rotatably connected to one side of the sealing plate (32) via the hinge.

9. A pressure reducing valve with a sliding element inside according to claim 1, characterized in that: A first groove (25) is provided on one side of the second limiting plate (15) at a position for clamping the filter plate (18), and one side of the filter plate (18) is fitted in the first groove (25).

10. A pressure reducing valve with a sliding element inside according to claim 1, characterized in that: The steel ball (7) is of semi-arc design, a second groove (33) is provided on one side of the fixing block (6), the fixing block (6) is fitted on one side of the steel ball (7) via the second groove (33), and the second groove (33) is of arc design.

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