Sediment-preventing flow-regulating and pressure-regulating valve
By incorporating dustproof rings and gaskets into the flow regulating and pressure regulating valve, the problems of wear caused by mud and sand and increased operating torque are solved, resulting in longer valve life and operational stability.
Patent Information
- Application Number
- CN202520514767.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Existing flow and pressure regulating valves are prone to wear, jamming, and increased operating torque in muddy environments due to mud and sand entering the valve stem and sliding bearing gaps, affecting valve life and safe and stable delivery.
A dust seal assembly and a gasket assembly, including a dust seal and a gasket, are installed between the valve stem and the sliding bearing to prevent mud and sand from entering while achieving a double seal and reducing frictional torque.
It effectively avoids problems such as valve stem wear, jamming, and increased operating torque, improves valve life and operational stability, and reduces valve operating torque.
Smart Images
Figure CN223690428U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of flow regulating and pressure regulating valve sealing, particularly relates to a silt prevention flow regulating and pressure regulating valve. BACKGROUND
[0002] Flow regulating and pressure regulating valves are widely used in water regulating projects due to good water level control, flow control function and pressure holding and pressure releasing control function. Currently, sliding bearings are used between the valve stem and the shaft hole of the valve body of the flow regulating and pressure regulating valve to realize valve stem guiding and supporting, friction reduction and other functions. Some products also have annular grooves on the inner hole and outer diameter of the sliding bearing to install rubber O-rings. In actual water regulating project applications, silt is carried by the water source, especially the Yellow River water, which is most serious, and silt deposition is easily formed in the valve.
[0003] For the flow regulating and pressure regulating valve without rubber O-rings installed between the sliding bearing and the valve stem, once the silt carried in the water enters the gap between the valve stem and the sliding bearing cooperating shaft hole, it will cause wear or jamming of the valve stem and the sliding bearing, affect the performance or opening and closing function of the flow regulating and pressure regulating valve, cause the service life of the flow regulating and pressure regulating valve to decrease or be unable to operate, and adversely affect the safe and stable delivery of the pipeline system.
[0004] For the flow regulating and pressure regulating valve with rubber O-rings installed between the sliding bearing and the valve stem, once the silt carried in the water enters the annular groove of the installed O-ring through the gap between the valve stem and the sliding bearing cooperating shaft hole, the silt entering the annular groove will also cause wear of the valve stem, affect the performance of the flow regulating and pressure regulating valve, cause the service life of the flow regulating and pressure regulating valve to decrease, and adversely affect the safe and stable delivery of the pipeline system.
[0005] For the flow regulating and pressure regulating valve with rubber O-rings installed between the sliding bearing and the valve stem, since the rubber O-ring is an elastomer and the friction coefficient between rubber and metal is large, the value is 0.5, so the friction torque between the rubber O-ring and the valve stem is large during the valve stem rotation operation of the valve, which increases the valve operation torque.
[0006] Therefore, in view of the above technical problems, the silt prevention flow regulating and pressure regulating valve is designed to avoid the problems of valve stem wear caused by silt entering between the valve stem and the sliding bearing of the flow regulating and pressure regulating valve, valve stem jamming causing the valve to be unable to operate, and large valve operation torque caused by silt entering, and also to avoid the problem of excessive friction torque between the valve stem of the flow regulating and pressure regulating valve and the silt prevention rubber O-ring, which is a technical problem to be solved by those skilled in the art. UTILITY MODEL CONTENTS
[0007] In order to solve the above problems, the utility model provides a kind of silt-preventing flow-regulating pressure regulating valve, avoid the silt-preventing flow-regulating pressure regulating valve stem and sliding bearing between the problem caused by entering silt and valve stem wear, valve life decline caused by valve jam, and valve cannot be operated, and the problem caused by entering silt and valve operating torque increase, simultaneously also can avoid silt-preventing flow-regulating pressure regulating valve stem and the excessive problem of friction torque between rubber O ring.
[0008] To achieve the above object, the utility model provides the following scheme:
[0009] A kind of silt-preventing flow-regulating pressure regulating valve, including the shaft hole and valve body recess that are set in valve body and cooperate with valve stem, dustproof ring assembly is set in the shaft hole, located on the circumference of the valve stem, and washer ring assembly is set in the valve body recess, one end of the washer ring assembly is in abutment with the valve body recess, and the other end is in abutment with crank, the washer ring assembly is set on the circumference of the valve stem, one end of the dustproof ring assembly is in abutment with sliding bearing, and the other end of the dustproof ring assembly is provided with the washer ring assembly.
[0010] Preferably, the dustproof ring assembly includes dustproof ring and O-ring arranged on the circumference of the dustproof ring.
[0011] Preferably, the dustproof ring includes silt-preventing elastic sealing lip arranged on the inner hole of the dustproof ring, and shaft shoulder arranged on the outer wall of the dustproof ring corresponding to the silt-preventing elastic sealing lip, the silt-preventing elastic sealing lip is in abutment with the valve stem, the shaft shoulder is in abutment with the inner wall of the shaft hole, and a cylindrical surface is formed on the outer wall of the dustproof ring away from the shaft shoulder, and the O-ring is arranged on the circumference of the cylindrical surface.
[0012] Preferably, the inner hole of the dustproof ring is arranged as an inclined surface, and the inclination angle of the inner hole is 8° to 10° from the valve stem.
[0013] Preferably, the washer ring assembly includes washer ring arranged in the valve body recess, and wave spring with one end in abutment with the washer ring and the other end in abutment with the crank.
[0014] Preferably, the washer ring is provided with washer ring groove on the matching surface of the wave spring for mounting one end of the wave spring, and the crank is provided with crank groove on the matching surface of the wave spring for mounting the other end of the wave spring.
[0015] Preferably, the distance between the washer ring assembly and the dustproof ring assembly is 1mm-2mm.
[0016] Preferably, the dustproof ring is polytetrafluoroethylene ring.
[0017] Preferably, both ends of the crank are provided with dustproof ring assembly and washer ring assembly.
[0018] Preferably, the anti-silt elastic sealing lip is installed towards the vertical center line of the valve body.
[0019] The utility model discloses the following technical effects are obtained relative to prior art:
[0020] Through setting up dust ring subassembly and washer subassembly, the double sealing of flow and pressure regulating valve can be realized, the problems, such as the wear of valve rod, the decline of valve life, the jamming of valve rod, the operation of valve, the increase of valve operation torque and the excessive friction torque between valve rod and anti-silt rubber O-ring, caused by the entry of silt between valve rod and sliding bearing of flow and pressure regulating valve can be avoided. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme in the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment, and obviously, the drawing in the following description is only some embodiments of the utility model, and for the ordinary skilled person in the art, other drawings can also be obtained according to these drawings without the creative labor.
[0022] ATTACHMENT Figure 1 It is the overall structure schematic diagram of the anti-silt flow and pressure regulating valve disclosed by the embodiment of the utility model.
[0023] ATTACHMENT Figure 2 It is the anti-silt structure schematic diagram of the left end and right end of the valve rod of the anti-silt flow and pressure regulating valve disclosed by the embodiment of the utility model.
[0024] ATTACHMENT Figure 3 It is the valve body structure schematic diagram of the anti-silt flow and pressure regulating valve disclosed by the embodiment of the utility model.
[0025] ATTACHMENT Figure 4 It is the crank structure schematic diagram of the anti-silt flow and pressure regulating valve disclosed by the embodiment of the utility model.
[0026] ATTACHMENT Figure 5 It is the washer structure schematic diagram of the anti-silt flow and pressure regulating valve disclosed by the embodiment of the utility model.
[0027] ATTACHMENT Figure 6 It is the dust ring structure schematic diagram of the anti-silt flow and pressure regulating valve disclosed by the embodiment of the utility model.
[0028] ATTACHMENT Figure 7 It is the wave spring structure schematic diagram of the anti-silt flow and pressure regulating valve disclosed by the embodiment of the utility model.
[0029] Wherein, 1, valve body; 2, crank; 3, sliding bearing; 4, valve stem; 5, wave spring; 6, grommet; 7, dust seal; 8, O-ring; 9, assembly gap; 10, shaft hole; 11, valve body groove; 12, crank groove; 13, grommet groove; 14, inclined surface; 15, silt elastic sealing lip; 16, cylindrical surface; 17, valve body vertical center line. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0031] The utility model discloses a kind of silt-preventing flow-regulating pressure regulating valves, avoid the problem that the valve stem of flow-regulating pressure regulating valve and sliding bearing are caused by entering silt to cause valve stem abrasion to cause valve life to decline, valve stem jam to cause valve cannot be operated, and the problem that valve operating torque increases due to entering silt, simultaneously also can avoid the problem that the friction torque between the valve stem of flow-regulating pressure regulating valve and silt-preventing rubber O-ring is too large.
[0032] To make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model is further described in detail below with reference to the drawings and specific embodiments.
[0033] Reference Figures 1-7 The silt-preventing flow-regulating pressure regulating valve disclosed in the embodiments of the utility model at least includes valve body 1, the shaft hole 10 for being provided with valve stem 4 and the valve body groove 11 are set in valve body 1, sliding bearing 3 is set in shaft hole 10, sliding bearing 3 is set on the circumference of valve stem 4, dust seal assembly is also set at the abutment of sliding bearing 3 in shaft hole 10, dust seal assembly is set on the circumference of valve stem 4, grommet assembly is set in valve body groove 11, one end of grommet assembly is abutted with valve body groove 11, the other end of grommet assembly is abutted with crank 2, grommet assembly is set on the circumference of valve stem 4, one end of dust seal assembly is abutted with sliding bearing 3, the other end of dust seal assembly is set in grommet assembly, by setting dust seal assembly and grommet assembly, the double sealing of flow-regulating pressure regulating valve can be realized, avoid the problem that the valve stem 4 of flow-regulating pressure regulating valve and sliding bearing 3 are caused by entering silt to cause valve stem 4 abrasion to cause valve life to decline, valve stem 4 jam to cause valve cannot be operated, and the problem that valve operating torque increases due to entering silt, simultaneously also can avoid the problem that the friction torque between the valve stem 4 of flow-regulating pressure regulating valve and silt-preventing rubber O-ring 8 is too large.
[0034] Reference Figure 2 AndFigure 6 As an implementation form, the dust-proof ring assembly comprises the dust-proof ring 7 and the O-shaped ring 8 arranged in the circumferential direction of the dust-proof ring 7. The dust-proof ring 7 can prevent the sand from entering the O-shaped ring 8 and causing the wear of the valve rod 4.
[0035] With reference to Figure 6 As an implementation form, the dust-proof ring 7 has a ring structure. The dust-proof ring 7 comprises a sand-proof elastic sealing lip 15 arranged at the inner hole end of the dust-proof ring 7 and a shaft shoulder arranged on the outer wall of the dust-proof ring 7. The shaft shoulder is arranged in correspondence with the sand-proof elastic sealing lip 15. The sand-proof elastic sealing lip 15 is arranged close to the gasket ring assembly. The sand-proof elastic sealing lip 15 abuts against the valve rod 4. The shaft shoulder abuts against the inner wall of the shaft hole 10. The outer wall of the dust-proof ring 7 is formed with a cylindrical surface 16. The O-shaped ring 8 is arranged in the circumferential direction of the cylindrical surface 16. The sand-proof elastic sealing lip 15 is arranged to realize the dynamic sealing with the valve rod 4 and the sand-proof function. The O-shaped ring 8 provides the elastic force for the dust-proof ring 7. Under the elastic force of the rubber O-shaped ring 8, the sand-proof elastic sealing lip 15 is subjected to the maximum force, so that the sand-proof elastic sealing lip 15 completely abuts against the valve rod 4 during the movement or the static state, thereby realizing the sand-proof function of the valve rod 4. The outer diameter of the dust-proof ring 7 is provided with the cylindrical surface 16. The rubber O-shaped ring 8 is arranged to realize the static sealing function of the dust-proof ring 7 and the valve body shaft hole 10.
[0036] It should be noted that the O-shaped ring 8 is made of rubber.
[0037] With reference to Figure 6 As an implementation form, the inner hole of the dust-proof ring 7 is provided with a bevel 14. The included angle between the bevel 14 of the inner hole and the axis of the valve rod 4 is 8° to 10° (i.e., the distance between the inner wall of the inner hole of the dust-proof ring 7 close to the sand-proof elastic sealing lip 15 and the axis of the valve rod 4 is smaller than the distance between the inner wall of the inner hole of the dust-proof ring 7 far from the sand-proof elastic sealing lip 15 and the axis of the valve rod 4). The bevel 14 is arranged on the inner hole of the dust-proof ring 7. The horizontal included angle of the bevel 14 is 8° to 10°, so as to realize the elastic function. Since the inner diameter of the dust-proof ring 7 is the bevel 14, the axial direction is a non-uniform cross section. Under the elastic force of the rubber O-shaped ring 8, the sand-proof elastic sealing lip 15 is subjected to the maximum force, so that the sand-proof elastic sealing lip 15 completely abuts against the valve rod 4 during the movement or the static state, thereby realizing the sand-proof function of the valve rod 4.
[0038] With reference to Figure 5 As an implementation form, the gasket ring assembly comprises the gasket ring 6 arranged in the valve body groove 11. One end of the gasket ring 6 abuts against the valve body groove 11 and is provided with the dust-proof ring 7. The other end of the gasket ring 6 abuts against the wave spring 5. One end of the wave spring 5 far from the gasket ring 6 abuts against the crank 2. Under the elastic force of the wave spring 5, the plane end of the gasket ring 6 abuts against the end surface of the valve body groove 11, so as to ensure the sealing function of the gasket ring 6.
[0039] With reference to Figure 4 andFigure 5 As an implementation form, the grommet 6 is provided with a grommet groove 13 on the matching surface of the wave spring 5 for mounting one end of the wave spring 5, and the crank 2 is provided with a crank groove 12 on the matching surface of the wave spring 5 for mounting the other end of the wave spring 5, and the grommet groove 13 and the crank groove 12 can ensure the stability of the wave spring 5 when compressed.
[0040] With reference to Figure 2 As an implementation form, the assembly gap 9 between the grommet assembly and the dust-proof ring assembly is 1-2 mm, and the grommet assembly and the dust-proof ring assembly are left with a gap of 1-2 mm, so that the dust-proof ring 7 is not subjected to the elastic force of the wave spring 5, and the good dust-proof function of the sand-proof elastic sealing lip 15 in the dust-proof ring 7 is ensured.
[0041] With reference to Figure 6 As an implementation form, the dust-proof ring 7 is a polytetrafluoroethylene ring, and the polytetrafluoroethylene material is set by the dust-proof ring 7, and the friction coefficient between the dust-proof ring 7 and the valve rod 4 is small, and the value is only 0.05, which is one-tenth of the friction coefficient of the O-shaped ring 8 made of rubber, so that the friction torque between the dust-proof ring 7 and the valve rod 4 is greatly reduced, that is, the operation torque of the valve is reduced.
[0042] With reference to Figure 1 As an implementation form, the dust-proof ring assembly and the grommet assembly are arranged at both ends of the crank 2, that is, the two sliding bearings 3 are arranged in the two shaft holes 10 in the valve body 1, so that the dust-proof ring assembly and the grommet assembly are arranged at both ends of the two sliding bearings 3, and the sealing property of the valve is ensured while the operation torque of the valve is reduced.
[0043] With reference to Figure 1 As an implementation form, the sand-proof elastic sealing lip 15 and the grommet 6 are installed towards the vertical center line 17 of the valve body, so that the sealing effect of the sand-proof elastic sealing lip 15 and the grommet 6 is ensured.
[0044] Through the above settings, the utility model has the beneficial effects that:
[0045] The risks of the valve rod 4 being worn due to the sand entering the gap between the sliding bearing 3 and the valve rod 4, the valve rod 4 being jammed and the valve being unable to operate, and the operation torque of the valve being increased are eliminated, and compared with the traditional flow and pressure regulating valve, the operation torque of the valve is reduced.
[0046] The adaptive changes according to actual needs are within the protection scope of the utility model.
[0047] It should be noted that for those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
Claims
1. A silt-prevention flow regulating and pressure regulating valve, characterized in that, The valve body is provided with an axial hole matched with the valve rod, a dustproof ring assembly arranged in the axial hole and located in the circumferential direction of the valve rod, and a washer assembly arranged in a valve body groove and abutting against the valve body groove at one end and abutting against a crank at the other end, the washer assembly being arranged in the circumferential direction of the valve rod, the dustproof ring assembly abutting against a sliding bearing at one end and being provided with the washer assembly at the other end.
2. The silt-proof flow and pressure regulating valve according to claim 1, wherein The dustproof ring assembly comprises a dustproof ring and an O-shaped ring arranged in the circumferential direction of the dustproof ring.
3. The silt-proof flow and pressure regulating valve according to claim 2, characterized in that, The dustproof ring comprises a silt-resistant elastic sealing lip arranged on an inner hole of the dustproof ring and an axial shoulder arranged on an outer wall of the dustproof ring and corresponding to the silt-resistant elastic sealing lip, the silt-resistant elastic sealing lip abutting against the valve rod, the axial shoulder abutting against an inner wall of the axial hole, the outer wall of the dustproof ring being formed with a cylindrical surface, and the O-shaped ring being arranged in the circumferential direction of the cylindrical surface.
4. The silt-proof flow and pressure regulating valve according to claim 3, characterized in that, The inner hole of the dustproof ring is arranged as an inclined surface, and an included angle between the inclined surface and an axis of the valve rod is 8-10°.
5. The silt-proof flow and pressure regulating valve according to claim 1, wherein The washer assembly comprises a washer arranged in the valve body groove and a wave spring abutting against the washer at one end and abutting against the crank at the other end, and the washer is provided with a dustproof ring at an end away from the wave spring.
6. The silt-proof flow and pressure regulating valve according to claim 5, wherein A washer groove for mounting one end of the wave spring is arranged on a matching surface between the washer and the wave spring, and a crank groove for mounting the other end of the wave spring is arranged on a matching surface between the crank and the wave spring.
7. The silt-proof flow and pressure regulating valve according to claim 1, wherein A distance between the washer assembly and the dustproof ring assembly is 1-2 mm.
8. The silt-proof flow-regulating and pressure-regulating valve according to claim 2, wherein The dustproof ring is a polytetrafluoroethylene ring.
9. The silt-proof flow and pressure regulating valve according to claim 1, wherein Both ends of the crank are provided with the dustproof ring assembly and the washer assembly.
10. The silt-proof flow and pressure regulating valve according to claim 3, wherein The silt-resistant elastic sealing lip is installed towards a vertical center line of the valve body.