CN223282604U - Damping sealing type one-way valve - Google Patents
Damping sealing type one-way valveInfo
- Publication number
- CN223282604U CN223282604U CN202422708003.2U CN202422708003U CN223282604U CN 223282604 U CN223282604 U CN 223282604U CN 202422708003 U CN202422708003 U CN 202422708003U CN 223282604 U CN223282604 U CN 223282604U
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- valve body
- damping
- cavity
- valve core
- pipe section
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Abstract
The utility model provides a damping sealing type one-way valve, which comprises an inlet valve body with an inflow cavity and an outlet valve body with an outflow cavity, wherein an elastic valve core is arranged in a butt joint cavity of the inlet valve body and the outlet valve body, a medium damping elastic telescopic interval is formed between the elastic valve core and the butt joint cavity, the elastic valve core is provided with an inner channel communicated with the inflow cavity and the outflow cavity, and the elastic valve core and the inlet valve body can be matched to form a closed structure. Through setting up the damping chamber between case and valve body, utilize the medium business turn over to be blocked, damping chamber space can not change fast and make damping force, cooperate the spring force to restrain case high frequency reciprocating motion to can effectively overcome the vibration of case, avoid the check valve to damage because of frequent striking, ensure the effect of unidirectional flow. The arrangement space of the spring is separated from the main channel, and the sealing block is arranged, so that the filiform substances in the medium are effectively prevented from winding on the spring, the main channel is prevented from being blocked due to accumulation of the filiform substances, and the continuous unblocked one-way channel is maintained.
Description
Technical Field
The utility model belongs to the technical field of machinery, and relates to a valve, in particular to a damping sealing type one-way valve.
Background
The one-way valve is such that fluid can only flow in along the inlet, but the outlet medium cannot flow back. One-way valves are also known as check valves or non-return valves. Check valves are commonly used in hydraulic systems to prevent reverse flow of oil flow or in pneumatic systems to prevent reverse flow of compressed air.
The existing one-way valve has the following disadvantages:
1. When the spring reset type one-way valve in the current market is applied to a gas or liquid system with larger pressure or flow fluctuation, the valve core of the one-way valve is easy to vibrate back and forth at high frequency, and particularly when the spring reset type one-way valve is applied to low-flow gas, the valve core vibration phenomenon of the one-way valve is more obvious due to the fact that the gas volume is easy to change along with the pressure, and the vibration frequency is very high. The valve core of the one-way valve can be damaged quickly and even the spring is completely broken due to the high-frequency vibration of the valve core and the continuous impact on the valve seat.
2. At present, a spring is generally arranged in a main channel through which a medium flows in the market by a spring reset type one-way valve, when fibrous or filiform substances exist in the medium, the spring is easy to wind, and after the one-way valve works for a long time, more and more sundries wind on the spring, so that the channel of the one-way valve is blocked.
Disclosure of utility model
The utility model aims to solve the problems in the prior art and provides a damping sealing type one-way valve.
The damping sealing type one-way valve comprises an inlet valve body with an inflow cavity and an outlet valve body with an outflow cavity, wherein an elastic valve core is arranged in a butt joint cavity of the inlet valve body and the outlet valve body, a medium damping elastic telescopic section is formed between the elastic valve core and the butt joint cavity, the elastic valve core is provided with an inner channel communicated with the inflow cavity and the outflow cavity, and the elastic valve core and the inlet valve body can be matched to form a closed structure.
In the damping sealing type one-way valve, the elastic valve core comprises a valve core and a spring, the spring is sleeved on the periphery of the valve core, the head end of the valve core faces the inlet valve body, the middle part of the valve core is convexly provided with a diameter-expanding stepped surface, and the tail end of the valve core faces the outlet valve body.
In the damping sealing type one-way valve, one end of the spring is abutted to the diameter-expanding step surface, the other end of the spring is abutted to the diameter-reducing step surface of the outlet valve body, a damping cavity is formed between the diameter-expanding step surface and the diameter-reducing step surface, a first sealing ring is embedded on the periphery of the diameter-expanding step surface and is in sliding contact with the inner wall of the inlet valve body, a first narrow channel communicated with the damping cavity is formed in the first sealing ring, a second sealing ring is arranged outside Zhou Qian at the tail end of the valve core and is in sliding contact with the inner wall of the outlet valve body, and a second narrow channel communicated with the damping cavity is formed in the second sealing ring.
In the damping sealing type one-way valve, a limiting step is arranged on the inner periphery of the outlet valve body in a protruding mode, the inner diameter of the limiting step is smaller than that of the diameter-reducing step surface, and the tail end of the valve core contacts with the limiting step to form a stop.
In the damping sealing type one-way valve, the head end of the valve core is a closed end, the circumference of the closed end is provided with a sealing surface which is a conical surface or a spherical surface, the inner circumference of the inlet valve body is provided with a valve seat which is an inner cone, and the sealing surface is closely attached to the valve seat to seal the inflow cavity.
In the damping sealing type one-way valve, the valve core is provided with the internal channel, the head end of the internal channel is blocked by the closed end, the tail end of the internal channel is communicated with the outflow cavity through an opening, at least one through-flow inclined hole is formed in the wall surface between the closed end and the diameter-expanding step surface, the outer end of the through-flow inclined hole is communicated with an annular gap between the valve core and the inlet valve body, and the inner end of the through-flow inclined hole is communicated with the internal channel.
In the damping sealing type one-way valve, the outlet end of the inlet valve body is provided with the inner pipe section, the outer peripheral wall of the inner pipe section is provided with the outer pipe section, the inner peripheral wall of the outer pipe section is provided with the inner thread, and the inner pipe section penetrates into the outer pipe section to enable the outer thread to be in threaded engagement with the inner thread.
In the damping sealing type one-way valve, the end face of the inner pipe section is embedded with a sealing element, and the inner pipe section is in sleeve joint fit with the outer pipe section, so that the sealing element is abutted against the sealing step face of the outer pipe section.
In the damping sealing type one-way valve, the first connecting screw thread is arranged on the inner surface of the inflow cavity of the inlet valve body, and the second connecting screw thread is arranged on the inner surface of the outflow cavity of the outlet valve body.
Compared with the prior art, the damping sealing type one-way valve has the following beneficial effects:
1. Through setting up the damping chamber between case and valve body, utilize damping intracavity medium business turn over to be blocked, damping chamber space can not quick change and make damping force, cooperate the spring force to restrain case high frequency reciprocating motion to can effectively overcome the vibration of case, avoid the check valve to damage because of frequent striking, ensure the effect of unidirectional circulation, increase of service life.
2. The arrangement space of the springs is separated from the main channel, and the sealing block is arranged, so that the filiform substances in the medium are effectively prevented from being wound on the springs, the main channel is prevented from being blocked due to accumulation of the filiform substances, the continuous smoothness of the unidirectional channel is kept, and the safety coefficient is improved.
3. The closed end of the valve core and the valve seat form high-quality seal, so that the medium is prevented from leaking in a closed state, and the safety and stability of the system are improved.
4. The design of the internal channel and the plurality of circulation inclined holes ensures that the medium can evenly flow in, the channel is smooth without sharp turns, thereby reducing the flow resistance and improving the flow efficiency of the valve.
5. The arrangement of the guide cavity ensures that the valve core always keeps good axis alignment in the moving process, avoids the deflection and clamping stagnation of the valve core, and improves the operation stability and reliability of the valve.
6. The design of the limiting step ensures that the valve core is protected within the maximum movement range, potential risks caused by excessive compression of the spring are prevented, and the operation safety is improved.
In conclusion, the damping sealing type one-way valve has excellent performance in the aspects of sealing performance, fluidity, vibration control and the like, can effectively reduce maintenance difficulty and improve safety, and is suitable for being widely used in various industrial applications.
Drawings
FIG. 1 is an exploded plan view of the present damping seal type check valve.
Fig. 2 is an internal structural view of the closed state of the damping seal type check valve.
Fig. 3 is an internal structural view of the opened state of the damping seal type check valve.
Fig. 4 is a schematic structural view of a seal ring in the damping seal type check valve.
Fig. 5 is an exploded perspective view of the damping seal type check valve.
Fig. 6 is an assembled perspective view of the damping seal type check valve.
In the figure, 1, an inlet valve body, 1a, an inflow cavity, 1b, a valve seat, 2, an outlet valve body, 2a, an outflow cavity, 2b, a diameter-reducing step surface, 2c, a limit step, 3, a valve core, 3a, a closed end, 3b, an expanding step surface, 3c, a through-flow inclined hole, 3d, an internal channel, 4, a spring, 5, a damping cavity, 6, a sealing ring I, 6a, a narrow channel I, 7, a sealing ring II, 7a, a narrow channel II, 8 and a sealing piece.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 1 to 6, the damping sealing type one-way valve comprises an inlet valve body 1 with an inflow cavity 1a and an outlet valve body 2 with an outflow cavity 2a, wherein an elastic valve core is arranged in a butt joint cavity of the inlet valve body 1 and the outlet valve body 2, an elastic telescopic interval for medium damping is formed between the elastic valve core and the butt joint cavity, the elastic valve core is provided with an inner channel 3d which is communicated with the inflow cavity 1a and the outflow cavity 2a, and the elastic valve core and the inlet valve body 1 can be matched to form a closed structure.
As shown in fig. 1 and 5, the elastic valve core comprises a valve core 3 and a spring 4, the spring 4 is sleeved on the periphery of the valve core 3, the head end of the valve core 3 faces the inlet valve body 1, the middle part of the valve core 3 is convexly provided with an expanding step surface 3b, and the tail end of the valve core 3 faces the outlet valve body 2. The inlet valve body 1 is internally provided with a first guide cavity for guiding the spool 3, and the inner wall of the guide cavity is in sliding fit with the spool 3, so that the axis of the spool 3 is basically coincident with the axis of the first guide cavity when the spool 3 moves forwards and backwards. The outlet valve body 2 is internally provided with a second guide cavity for guiding the sliding valve core 3, the inner wall of the second guide cavity is in sliding fit with the valve core 3, and the axis of the valve core 3 is basically coincident with the axis of the second guide cavity when the valve core 3 moves forwards and backwards. The valve core 3 is guided by the valve body before and after movement, so the valve core 3 cannot deflect.
Fluid enters from the inflow cavity 1a of the inlet valve body 1, passes through the internal channel 3d of the valve core 3, and finally flows out from the outflow cavity 2a of the outlet valve body 2.
The head end of the valve core 3 is a closed end 3a, the circumference of the closed end 3a is provided with a sealing surface which is a conical surface or a spherical surface, the inner circumference of the inlet valve body 1 is provided with a valve seat 1b which is an inner cone, and the sealing surface is closely contacted with the valve seat 1b to seal the inflow cavity 1 a. The conicity and the direction of the valve seat 1b and the conicity of the closed end 3a are consistent, and the inner peripheral surface of the valve seat 1b and the sealing surface of the closed end 3a are smooth surfaces, so that the valve seat 1b and the closed end 3a are bonded to form a good sealing effect, and medium circulation is effectively stopped. In the closed state of the valve, the valve core 3 is pressed by the elastic force of the spring 4, so that the sealing surface of the closed end 3a is abutted against the inner peripheral surface of the valve seat 1b, thereby realizing the shutoff effect.
The valve core 3 is provided with an inner channel 3d, the head end of the inner channel 3d is blocked by a closed end 3a, the tail end of the inner channel 3d is communicated with an outflow cavity 2a through an opening, at least one through-flow inclined hole 3c is formed in the wall surface between the closed end 3a and the diameter-expanding step surface 3b, the outer end of the through-flow inclined hole is communicated with an annular gap between the valve core 3 and the inlet valve body 1, and the inner end of the through-flow inclined hole is communicated with the inner channel 3d. The number of the through-flow inclined holes 3c is multiple, and the through-flow inclined holes 3c are uniformly distributed around the axis of the valve core 3, so that the medium uniformly flows into the internal channel 3d from the periphery.
When the medium enters from the inflow cavity 1a of the valve body 1, the fluid pushes the valve core 3 to compress the spring 4 to move towards the outlet valve body 2, the sealing surface of the closed end 3a is separated from the inner peripheral surface of the valve seat 1b, so that an annular gap is generated, the medium flows to the circulation inclined hole of the side wall of the valve core 3, enters the inner channel 3d through the circulation inclined hole, then enters the outflow cavity 2a and is discharged, and the communication state of the inlet valve body 1 and the outlet valve body 2 is realized.
One end of the spring 4 is abutted against the diameter-expanding step surface 3b, the other end of the spring 4 is abutted against the diameter-reducing step surface 2b of the outlet valve body 2, a damping cavity 5 is formed between the diameter-expanding step surface 3b and the diameter-reducing step surface 2b, a first sealing ring 6 is arranged outside Zhou Qian of the diameter-expanding step surface 3b and is in sliding close contact with the inner wall of the inlet valve body 1, as shown in fig. 4, a first narrow channel 6a communicated with the damping cavity 5 is formed in the first sealing ring 6, a second sealing ring 7 is arranged outside Zhou Qian of the tail end of the valve core 3, the second sealing ring 7 is in sliding close contact with the inner wall of the outlet valve body 2, as shown in fig. 4, a second narrow channel 7a communicated with the damping cavity 5 is formed in the second sealing ring 7. The damping cavity 5 corresponds to an elastic telescopic section, the spring 4 is arranged in the damping cavity 5, sliding sealing is formed on two sides of the damping cavity 5 by the sealing rings, and then liquid or gas in the damping cavity 5 can only slowly enter and exit the damping cavity 5 through the narrow channel.
When the valve core 3 moves to communicate the inflow cavity 1a with the outflow cavity 2a, the first sealing ring 6 closely contacts the inner wall of the inlet valve body 1 and the second sealing ring 7 closely contacts the inner wall of the outlet valve body 2, so that filiform substances in a flowing medium cannot enter the damping cavity 5, and the spring 4 cannot be wound to cause blockage. Meanwhile, the spring 4 is combined with the damping cavity 5 to be arranged, so that elastic buffering can be provided, and high-frequency vibration can be effectively absorbed.
The inner periphery of the outlet valve body 2 is convexly provided with a limiting step 2c, the inner diameter of the limiting step 2c is smaller than that of the diameter-reducing step surface 2b, and the tail end of the valve core 3 contacts the limiting step 2c to form a stop. The valve core 3 moves towards the outlet valve body 2 by compressing the damping cavity 5 and synchronously compressing the spring 4, the moving maximum limit is that the tail end of the valve core 3 is abutted on the limiting step 2c, so that the continuous compression of the spring 4 is stopped, the valve core 3 can be ensured to be effectively opened, the spring 4 can be protected, meanwhile, the stability of the valve core 3 in a fluid medium is improved by a stop, and high-frequency vibration is reduced.
The outlet end of the inlet valve body 1 is provided with an inner pipe section, the outer peripheral wall of the inner pipe section is provided with an outer pipe section, the inlet end of the outlet valve body 2 is provided with an inner pipe section, the inner peripheral wall of the outer pipe section is provided with an inner thread, and the inner pipe section penetrates into the outer pipe section to enable the outer thread and the inner thread to form threaded engagement connection. The screw thread assembly is a common pipeline installation mode, has the characteristics of convenience in connection and convenience in disassembly and assembly, so that the disassembly and assembly efficiency is improved, the subsequent maintenance is facilitated, and the screw thread assembly is high in connection stability and high in tightness.
The end face of the inner pipe section is embedded with a sealing element 8, and the inner pipe section is in sleeve joint fit with the outer pipe section, so that the sealing element 8 is abutted against the sealing step face of the outer pipe section. The sealing step surface is a circumferential annular step at the inner end of the outer pipe section, the inner pipe section penetrates into the outer pipe section to be screwed continuously until the sealing piece 8 is pressed against the sealing step surface to stop, and the sealing connection between the inlet valve body 1 and the outlet valve body 2 is realized through the sealing piece 8, so that the one-way valve cannot leak.
The inner surface of the inflow cavity 1a of the inlet valve body 1 is provided with a first connecting thread, and the inner surface of the outflow cavity 2a of the outlet valve body 2 is provided with a second connecting thread. The inlet valve body 1 is connected to other pipes or fittings by means of a connecting thread one. The outlet valve body 2 is connected with other pipelines or joints through the connecting screw thread II.
The damping sealing type one-way valve has the following action modes:
1. The valve being in a closed state
As shown in fig. 2, in the system, a liquid or gas medium flows from the outlet valve body 2 to the inlet valve body, the flow direction of the medium is opposite to the opening flow direction of the one-way valve, at this time, the valve core 3 is pressed against the valve seat 1b by the spring 4, the force of the liquid or gas medium acting on the valve core 3 is also in the direction of pressing the valve core 3 against the valve seat 1b, at this time, the sealing surface of the valve core 3 and the inner peripheral surface of the valve seat 1b are completely stuck and effectively sealed, the one-way valve is in a closed state, and the medium cannot flow through the one-way valve.
2. The valve being in an open state
As shown in fig. 3, when the pressure of the liquid or gas medium in the system flows from the inlet valve body 1 to the outlet valve body 2 and is greater than the elastic force of the spring 4, the medium pushes the valve core 3 away from the valve seat 1b, the medium enters from the inflow cavity 1a, flows through the through-flow inclined hole 3c on the valve core 3 and enters the internal channel 3d, and then flows out of the outflow cavity 2a to form a one-way valve, when the one-way valve is in an open state, under the combined action of the pressure fluctuation of the gas or liquid medium and the force of the spring 4, the valve core 3 and the spring 4 together form a high-frequency vibration system, the valve core 3 can be subjected to the reciprocating force, the valve core 3 is required to be compressed and expanded by the rapid reciprocating motion of the high frequency, but the two sides of the damping cavity 5 are provided with sealing rings, so that the liquid or gas medium in the damping cavity 5 cannot enter into the damping cavity 5 quickly, the cavity volume of the damping cavity 5 cannot be changed quickly, and the high-frequency vibration of the valve core 3 is effectively inhibited, and the premature damage of the one-way valve is avoided.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined. While the utility model has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It is to be understood that changes and modifications may be made by one of ordinary skill within the scope of the following claims. In particular, the utility model encompasses further embodiments having any combination of features from the different embodiments described above. To the extent that the expression "general" or "substantially" is used, this patent application should be construed as disclosing that such features and values are equally well satisfied, i.e., that none of the foregoing features are characterized as "general" or "substantially".
In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Claims (9)
1. The damping sealing type one-way valve comprises an inlet valve body with an inflow cavity and an outlet valve body with an outflow cavity, wherein an elastic valve core is arranged in a butt joint cavity of the inlet valve body and the outlet valve body.
2. The damping seal type check valve according to claim 1, wherein the elastic valve core comprises a valve core and a spring, the spring is sleeved on the periphery of the valve core, the head end of the valve core faces the inlet valve body, the middle part of the valve core is convexly provided with a diameter expanding step surface, and the tail end of the valve core faces the outlet valve body.
3. The damping sealing type one-way valve according to claim 2, wherein one end of the spring is abutted against the diameter-expanding step surface, the other end of the spring is abutted against the diameter-reducing step surface of the outlet valve body, a damping cavity is formed between the diameter-expanding step surface and the diameter-reducing step surface, a first sealing ring is embedded on the periphery of the diameter-expanding step surface and is in sliding contact with the inner wall of the inlet valve body, a first narrow channel communicated with the damping cavity is formed in the first sealing ring, a second sealing ring is arranged outside Zhou Qian of the tail end of the valve core and is in sliding contact with the inner wall of the outlet valve body, and a second narrow channel communicated with the damping cavity is formed in the second sealing ring.
4. The damping seal type check valve according to claim 3, wherein a limit step is protruded from the inner periphery of the outlet valve body, the inner diameter of the limit step is smaller than the inner diameter of the diameter-reducing step surface, and the tail end of the valve core contacts with the limit step to form a stop.
5. The damping seal type one-way valve according to claim 2, wherein the head end of the valve core is a closed end, the circumference of the closed end is provided with a sealing surface which is a conical surface or a spherical surface, the inner circumference of the inlet valve body is provided with a valve seat which is an inward cone, and the sealing surface is closely contacted with the valve seat to seal off the inflow cavity.
6. The damping seal type one-way valve according to claim 5, wherein the valve core is provided with the inner channel, the head end of the inner channel is blocked by the closed end, the tail end of the inner channel is communicated with the outflow cavity through an opening, at least one through-flow inclined hole is formed in the wall surface between the closed end and the expanding step surface, the outer end of the through-flow inclined hole is communicated with an annular gap between the valve core and the inlet valve body, and the inner end of the through-flow inclined hole is communicated with the inner channel.
7. The damping seal type one-way valve according to claim 1, wherein the outlet end of the inlet valve body is provided with an inner pipe section, an external thread is tapped on the outer peripheral wall of the inner pipe section, the inlet end of the outlet valve body is provided with an outer pipe section, an internal thread is tapped on the inner peripheral wall of the outer pipe section, and the inner pipe section penetrates into the outer pipe section to form a threaded engagement connection with the external thread.
8. The damping seal type check valve according to claim 7, wherein a sealing member is embedded on an end face of the inner pipe section, and the inner pipe section is in sleeve joint fit with the outer pipe section so that the sealing member abuts against a sealing step face of the outer pipe section.
9. The damping seal type check valve according to claim 1, wherein the inflow chamber inner surface of the inlet valve body is provided with a first connecting thread, and the outflow chamber inner surface of the outlet valve body is provided with a second connecting thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422708003.2U CN223282604U (en) | 2024-11-06 | 2024-11-06 | Damping sealing type one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422708003.2U CN223282604U (en) | 2024-11-06 | 2024-11-06 | Damping sealing type one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223282604U true CN223282604U (en) | 2025-08-29 |
Family
ID=96840154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422708003.2U Active CN223282604U (en) | 2024-11-06 | 2024-11-06 | Damping sealing type one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223282604U (en) |
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2024
- 2024-11-06 CN CN202422708003.2U patent/CN223282604U/en active Active
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