Low-noise gas one-way valve
By introducing a silence screw into the gas check valve, the whistling noise problem of traditional gas check valves during high-speed flow is solved, and the low-noise gas circulation effect is achieved.
Patent Information
- Application Number
- CN202422158434.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-03
AI Technical Summary
Traditional gas check valves produce large howling noises when the gas flows at high speed and lack sound silence structure.
The gas silence screw is introduced into the gas one-way valve. By providing the silence screw with an outer wall with a gas guide spiral groove in the air outlet pipe, the gas flow rate is slowed down and the flow direction is changed to reduce the impact on the air outlet hole.
It effectively reduces the howling noise of the gas check valve when flowing at high speed, and realizes low-noise gas circulation.
Smart Images
Figure CN223063232U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a structural improvement of a gas one-way valve. Background Art
[0002] Conventional gas one-way valves are not equipped with a silencer structure, and the high-speed flowing gas will produce a large whistling noise in the valve when in use. Utility Model Content
[0003] The utility model aims to provide a low-noise gas one-way valve.
[0004] For this purpose, the utility model adopts the following technical solutions:
[0005] A low-noise gas one-way valve comprises an air inlet cap, a valve seat, a valve body, a valve core, a spring, an air outlet pipe and a muffler screw; the air inlet cap comprises a round cap body and an air inlet pipe arranged on the outer side wall of the round cap body, the cap opening of the round cap body is divided into an internal thread opening and an air inlet cavity arranged inside the internal thread opening, and the air inlet pipe is connected to the air inlet cavity; the valve seat is arranged inside the round cap body, and the valve seat comprises an annular body and an integrally formed cylindrical body arranged on one side of the annular body and the cylinder mouth is butted with the ring opening of the annular body, the ring opening of the annular body is a valve hole, the cylindrical body probes into the air inlet cavity and connects the air inlet cavity and the valve hole through the air inlet hole arranged on its cylinder wall; the valve body is in the shape of a circular tube and its corresponding two ends are respectively arranged as an air inlet end and an air outlet end, the air inlet end of the valve body is screwed and fixed in the internal thread opening, and the valve seat is squeezed and fixed in the round cap body. The valve core is arranged inside the valve body, and the valve core includes a round cover plate, a cone body integrally formed on one side of the round cover plate, and a spring tube integrally formed on the other side of the round cover plate. The round cover plate is fitted on the annular surface of the annular body to close the valve hole, and the cone body is movably inserted in the valve hole; the spring is arranged in the valve body to elastically connect the valve core to the valve seat; the air outlet pipe is a rear-opening round tube body, the rear part of which is inserted and fixed inside the valve body, the front part of which is exposed outside the air outlet end of the valve body and the front end side wall of which is provided with an air outlet hole; the silencer screw includes a rod body inserted and fixed inside the air outlet pipe, the outer wall of the rod body is provided with an air guide spiral groove connecting the front and rear ends thereof, the rod body is tightly fitted with the pipe wall of the air outlet pipe, and the front end of the rod body directly reaches the front bottom of the air outlet pipe, so that the rear opening of the air outlet pipe and the air outlet hole are connected by the air guide spiral groove.
[0006] As a preferred solution, the silencer screw further includes a handle integrally formed at the rear end of the rod body.
[0007] As a preferred solution, the handle is U-shaped and extends rearward of the shaft.
[0008] As a preferred solution, the handle is partially or completely exposed behind the air outlet pipe.
[0009] As a preferred solution, one end of the spring is sleeved on the spring tube and supports the round cover plate, and the other end supports the convex ring provided on the inner wall of the air outlet end of the valve body.
[0010] As a preferred solution, a sealing cover is provided at the air outlet end of the valve body, and an insertion hole that is axially aligned with the convex ring inside the valve body is provided on the sealing cover.
[0011] As a preferred solution, the rear part of the air outlet pipe is inserted into the valve body along the insertion hole and the convex ring, so as to be fixed inside the convex ring and be in sealing fit with the edge of the insertion hole.
[0012] As a preferred solution, there are several air inlet holes, and all of the several air inlet holes are axially long holes and are evenly arranged in a ring on the side wall of the cylindrical body.
[0013] As a preferred solution, the air outlet hole is a circumferentially long hole and is symmetrically arranged on the corresponding two sides at the front end of the air outlet pipe.
[0014] As a preferred solution, the inner diameter of the air inlet cavity is smaller than the inner diameter of the internal thread opening, so as to form an annular step at the junction of the two. The valve seat fits against the step surface of the annular step through its circular ring body, and a sealing ring for blocking the connection gap between the valve seat and the air inlet cap is sleeved on the outer periphery of the circular ring body. The valve body presses the sealing ring inward to squeeze and fix the valve seat and the sealing ring together inside the round cap body.
[0015] In the utility model, a silencing screw with a gas guiding spiral groove on the outer wall is arranged in the air outlet pipe. The gas flowing through the air outlet pipe can be decelerated and its flow direction can be changed by the gas guiding spiral groove, weakening the impact of the gas on the air outlet hole and avoiding the occurrence of whistling noise. Description of the Drawings
[0016] Figure 1 is a schematic diagram of the overall structure of an embodiment of the utility model;
[0017] Figure 2 is an exploded view of the overall structure of an embodiment of the utility model;
[0018] Figure 3 is a cross-sectional view of the overall structure of an embodiment of the utility model. Detailed Embodiment
[0019] The following describes the utility model in conjunction with the drawings and specific embodiments.
[0020] Such as Figures 1-3 a low-noise gas check valve, including an air inlet cap 1, a valve seat 2, a sealing ring 3, a valve body 4, a valve core 5, a spring 6, a sealing cover 7, an air outlet pipe 8 and a silencing screw 9.
[0021] The intake cap 1 includes a round cap body 1.1 and an intake pipe 1.2 integrally formed and standing upright on the outer wall of the round cap body 1.1. The cap opening of the round cap body 1.1 is divided into an internal thread opening 1.11 and an intake cavity 1.12 provided inside the internal thread opening 1.11. The intake pipe 1.2 communicates with the intake cavity 1.12. The inner diameter of the intake cavity 1.12 is smaller than the inner diameter of the internal thread opening 1.11, so as to form an annular step 1.13 at the junction of the two.
[0022] The valve seat 2 is arranged inside the round cap body 1.1. The valve seat 2 includes a circular ring body 2.1 and a cylindrical body 2.2 integrally formed and centered on one side of the circular ring body 2.1, and the barrel opening of the cylindrical body 2.2 is butted against the ring opening of the circular ring body 2.1. The circular ring body 2.1 fits against the step surface of the annular step 1.13 so that the ring opening of the circular ring body 2.1 becomes a valve hole 2.11. The cylindrical body 2.2 extends into the intake cavity 1.12 and conducts the intake cavity 1.12 and the valve hole 2.11 through the intake holes 2.21 provided on its barrel wall. There are several intake holes 2.21, and several intake holes 2.21 are all axially long holes and are evenly arranged in a ring on the side wall of the cylindrical body 2.2.
[0023] The sealing ring 3 is sleeved on the periphery of the circular ring body 2.1 to seal the connection gap between the valve seat 2 and the intake cap 1. The sealing ring 3 is sleeved and fixed on the snap ring 2.12 protruding from the periphery of the circular ring body 2.1 through the groove ring 3.1 provided on its inner wall.
[0024] The valve body 4 is in a round tubular shape and its corresponding two ends are respectively set as an intake end and an outlet end. The valve body 4 is screwed to the internal thread opening 1.11 of the round cap body 1.1 through the external thread opening 4.1 provided at its intake end, so as to be fixedly connected to the intake cap 1, and the valve seat 2 and the sealing ring 3 are squeezed and fixed inside the round cap body 1.1 by inwardly propping against the sealing ring 3.
[0025] The valve core 5 is arranged inside the valve body 4. The valve core 5 includes a round cover plate 5.1, a conical body 5.2 integrally formed and centered on one side of the round cover plate 5.1, and a spring tube 5.3 integrally formed and centered on the other side of the round cover plate 5.1. The round cover plate 5.1 fits against the ring surface of the circular ring body 2.1 to close the valve hole 2.11, and the conical body 5.2 is movably inserted into the valve hole 2.11.
[0026] The spring 6 is arranged inside the valve body 4. One end of the spring 6 is sleeved on the spring tube 5.3 and props against the round cover plate 5.1, and the other end props against the convex ring 4.2 provided on the inner wall of the outlet end of the valve body 4, so as to elastically connect the valve core 5 to the valve seat 2.
[0027] The sealing cover 7 is arranged at the outlet end of the valve body 4. The sealing cover 7 is fixedly connected to the valve body 4 by clamping the snap ring 7.1 provided on the inner edge of its cover opening to the neck 4.3 provided at the outlet end of the valve body 4. A jack 7.2 that is internally and externally aligned with the convex ring 4.2 inside the valve body 4 is provided in the center of the sealing cover 7.
[0028] The air outlet pipe 8 is a rear-opening circular pipe body. Its rear part is inserted into the interior of the valve body 4 along the insertion hole 7.2 and the convex ring 4.2, so as to be fixed within the convex ring 4.2 and be in sealing fit with the hole edge of the insertion hole 7.2. The front part of the air outlet pipe 8 exposes outside the air outlet end of the valve body 4, and air outlet holes 8.1 are provided on the front side wall of its front end. The air outlet holes 8.1 are circumferential long holes and there are several pairs. The several pairs of air outlet holes 8.1 are symmetrically arranged on the corresponding two sides at the front end of the air outlet pipe 8. A connecting ring 8.2 is integrally formed and protruded on the outer wall of the front part of the air outlet pipe 8. The connecting ring 8.2 is arranged behind the air outlet holes 8.1.
[0029] The silencing screw 9 includes a screw body 9.1 and a handle 9.2 integrally formed at the rear end of the screw body 9.1. A gas guiding spiral groove 9.11 communicating the front and rear ends of the screw body 9.1 is provided on the outer wall of the screw body 9.1. The handle 9.2 is U-shaped and extends rearward of the screw body 9.1. The screw body 9.1 is inserted and fixed inside the air outlet pipe 8. The screw body 9.1 is in close fit with the pipe wall of the air outlet pipe 8 and its front end abuts against the front bottom of the air outlet pipe 8, so as to communicate the rear opening of the air outlet pipe 8 and the air outlet holes 8.1 through the gas guiding spiral groove 9.11. Part or all of the handle 9.2 exposes behind the air outlet pipe 8 to facilitate the disassembly and assembly of the silencing screw 9.
[0030] The working principle of the present utility model is as follows: When the intake air pressure is greater than the resistance of the spring 6, air will enter the valve hole 2.11 along the intake pipe 1.2, the intake cavity 1.11, and the intake hole 2.21, and push the valve core 5 to overcome the resistance of the spring 6 and withdraw to open the valve hole 2.11. Then it continues to be discharged along the valve body 4, the air outlet pipe 8, the silencing screw 9, and the air outlet holes 8.1. During this process, the gas guiding spiral groove 9.11 can reduce the air flow rate and change the air flow direction to weaken the impact on the air outlet holes and avoid the occurrence of whistling noise. When the intake air pressure is lower than the elastic force of the spring 6, the spring 6 will push the valve core 5 back to the valve seat 2 to block the valve hole 2.11, and the gas cannot flow back to achieve one-way conduction.
Claims
1. A low-noise gas check valve, comprising an air inlet cap, a valve seat, a valve body, a valve core, a spring, an air outlet pipe and a silencing screw; characterized in that: The air inlet cap comprises a round cap body and an air inlet pipe arranged on the outer wall of the round cap body, the cap opening of the round cap body is divided into an internal thread opening and an air inlet cavity arranged inside the internal thread opening, and the air inlet pipe is connected to the air inlet cavity; the valve seat is arranged inside the round cap body, the valve seat comprises an annular body and a cylindrical body integrally formed and arranged on one side of the annular body and the cylinder mouth is connected with the ring opening of the annular body, the ring opening of the annular body is a valve hole, the cylindrical body penetrates into the air inlet cavity and connects the air inlet cavity and the valve hole through the air inlet hole arranged on its cylinder wall; the valve body is in the shape of a circular tube and its corresponding two ends are respectively arranged as an air inlet end and an air outlet end, the air inlet end of the valve body is screwed and fixed in the internal thread opening, and the valve seat is pressed and fixed inside the round cap body; the valve core is arranged inside the valve body, and the valve core comprises a round cover sheet , a cone formed integrally on one side of the round cover plate, and a spring tube formed integrally on the other side of the round cover plate, the round cover plate fits on the annular surface of the annular body to close the valve hole, and the cone is movably inserted in the valve hole; the spring is arranged in the valve body to elastically connect the valve core to the valve seat; the air outlet pipe is a rear-opening circular tube body, the rear part of which is inserted and fixed in the interior of the valve body, the front part of which is exposed outside the air outlet end of the valve body and an air outlet hole is arranged on the front end side wall; the silencer screw includes a rod body inserted and fixed in the interior of the air outlet pipe, the outer wall of the rod body is provided with an air guide spiral groove connecting the front and rear ends thereof, the rod body fits tightly against the tube wall of the air outlet pipe and the front end thereof directly touches the front bottom of the air outlet pipe, so that the rear opening of the air outlet pipe and the air outlet hole are connected by the air guide spiral groove.
2. The one-way gas valve with low noise according to claim 1, characterized in that: The silencer screw rod also includes a handle which is integrally formed at the rear end of the rod body.
3. The one-way gas valve with low noise according to claim 2, characterized in that: The handle is U-shaped and extends behind the shaft.
4. A low-noise gas one-way valve according to claim 2 or 3, characterized in that: The handle is partially or completely exposed behind the exhaust pipe.
5. A low-noise gas check valve according to claim 1, characterized in that: One end of the spring is sleeved with the spring tube and supports the round cover plate, and the other end supports the convex ring arranged on the inner wall of the air outlet end of the valve body.
6. The one-way gas valve with low noise according to claim 5, characterized in that: A sealing cover is arranged at the air outlet end of the valve body, and a plug hole is arranged on the sealing cover and is directly opposite to the convex ring in the valve body.
7. The one-way gas valve with low noise according to claim 6, characterized in that: The rear part of the air outlet pipe is inserted into the interior of the valve body along the insertion hole and the convex ring, so as to be fixed in the convex ring and sealed with the hole edge of the insertion hole.
8. A low-noise gas one-way valve according to claim 1, characterized in that: A plurality of air inlet holes are provided, and all of the plurality of air inlet holes are axially long holes and are evenly arranged in a ring on the side wall of the cylinder.
9. A low-noise gas check valve according to claim 1, 7 or 8, characterized in that: The air outlet holes are circumferentially long holes and are symmetrically arranged on the corresponding two sides of the front end of the air outlet pipe.
10. A low-noise gas one-way valve according to claim 1, characterized in that: The inner diameter of the air inlet cavity is smaller than the inner diameter of the internal threaded port, so as to form an annular step at the junction of the two. The valve seat fits the step surface of the annular step through its annular body. The outer periphery of the annular body is sleeved with a sealing ring for sealing the connection gap between the valve seat and the air inlet cap. The valve body squeezes and fixes the valve seat and the sealing ring together inside the round cap body by supporting the sealing ring inward.