CN217153144U

CN217153144U - Vacuum safety overflow valve

Info

Publication number: CN217153144U
Application number: CN202220373778.7U
Authority: CN
Inventors: 陈可凡; 李�浩
Original assignee: Luoyang Chuansheng Valve Co ltd
Current assignee: Luoyang Chuansheng Valve Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-08-09
Anticipated expiration: 2032-02-23

Abstract

The utility model discloses a vacuum safety overflow valve relates to valve technical field, aims at solving the unstable problem of traditional overflow valve in use. The key points of the technical scheme are as follows: including the valve body, the air flue has been seted up in the valve body, set up the gas vent with the air flue intercommunication on the lateral wall of valve body, the air inlet with the air flue intercommunication is seted up to the bottom surface of valve body, the gas outlet with the air flue intercommunication is seted up to the top surface of valve body, sliding connection has inside hollow case in the air flue, the top surface of case sets up to seal form and its bottom surface and sets up to the opening form, set up on the periphery wall of case can feed through the case inside with the through hole of gas vent and can feed through a plurality of overflow holes of case inside with the gas outlet. The utility model discloses a slip realization of case realizes the protection of overflow valve to the machine to gas transmission channel's switching.

Description

Vacuum safety overflow valve

Technical Field

The utility model relates to the technical field of valves, more specifically say, it relates to a vacuum safety overflow valve.

Background

The safety overflow valve plays a safety protection role in the system. When the system pressure exceeds the specified value, the safety valve is opened, and a part of gas in the system is discharged into the atmosphere, so that the system pressure does not exceed the allowable value, and the system is ensured not to have accidents due to overhigh pressure.

The traditional safety overflow valve generally adopts a spring type safety valve and a lever type safety valve, the spring type safety valve mainly controls the on-off of gas by depending on the acting force of a spring, the pretightening force of the spring is changed in different degrees along with the change of temperature and time in use, so that the safety of the safety valve in normal use is reduced, the lever type safety valve utilizes a heavy hammer and a lever to balance the acting force acting on a valve clack, but the lever type safety valve is easy to vibrate in use, gas is easy to leak in the vibration process, and therefore the gas safety control is not tight enough, and the overflow valve capable of stably realizing the on-off control of the gas is necessary.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a vacuum safety overflow valve reaches the purpose of stable control air current break-make through the setting of structure.

The above technical purpose of the present invention can be achieved by the following technical solutions: the vacuum safety overflow valve comprises a valve body, wherein an air passage is formed in the valve body, an air outlet communicated with the air passage is formed in the side wall of the valve body, an air inlet communicated with the air passage is formed in the bottom surface of the valve body, an air outlet communicated with the air passage is formed in the top surface of the valve body, an internal hollow valve core is connected in the air passage in a sliding mode, the top surface of the valve core is set to be in a closed state, the bottom surface of the valve core is set to be in an open state, and a through hole capable of communicating the interior of the valve core with the air outlet and a plurality of overflow holes capable of communicating the interior of the valve core with the air outlet are formed in the peripheral wall of the valve core.

Through adopting above-mentioned technical scheme, it is gaseous in the inlet inflow valve core from the air inlet, the air flue plays the guide effect to the slip of case in the valve body, the one end that the case is close to the air inlet sets up to the opening and communicates with the air inlet, the one end that the air inlet was kept away from to the case is sealed, avoid the atmospheric pressure to discharge along the gas outlet when being normal, guarantee the normal use of safe overflow valve, when atmospheric pressure in the inflow valve body is normal, gaseous through the gas vent along the through-hole discharges outside the valve body, when the atmospheric pressure in the inflow valve body is too big, gaseous promotion case takes place vertical ascending slip along the air flue, make the through-hole slide to break away from the intercommunication with the gas vent, gaseous through gas outlet discharge valve body along the overflow hole, avoid atmospheric pressure to cause the damage to the machine with the gas vent intercommunication, realize the protection to the machine.

The utility model discloses further set up to: and a release cavity communicated with the air passage is formed in the valve body close to one end of the air outlet, and the inner diameter of the release cavity is larger than that of the air passage.

Through adopting above-mentioned technical scheme, the internal diameter of release chamber is greater than the internal diameter of air flue, when guaranteeing that the case is vertical upwards to slide, the discharge that the overflow hole influences gas with the inner wall laminating of air flue, guarantees gaseous stable emission along the overflow hole when atmospheric pressure is too big.

The utility model discloses further set up to: the top surface of the valve core is fixedly connected with a closing plate, the cross sectional area of the closing plate is larger than the cross sectional area of the air passage and smaller than the cross sectional area of the release cavity, and the vertex angle of the closing plate is abutted against the inner wall of the air outlet.

Through adopting above-mentioned technical scheme, the closure plate realizes keeping away from the sealed of air inlet one end to the case, make the change drive valve core of gas pressure size slide in the air flue and realize the switching to gas emission passageway, the cross-sectional area of closure plate is greater than the cross-sectional area of air flue, avoid the case to slide to wearing out the valve body under the effect of self gravity, guarantee the normal use of valve body, the cross-sectional area of closure plate is less than the cross-sectional area of release chamber, be convenient for gas along release chamber discharge outside the gas outlet, and the apex angle of closure plate offsets with the inner wall of gas outlet, the sliding distance of closure plate restriction case, avoid atmospheric pressure to excessively promote the valve core and slide from the valve body, ensure the security that the valve body used.

The utility model discloses further set up to: the air outlet comprises a discharge section, a reinforcing section and a limiting section from top to bottom in sequence, the inner diameter of the reinforcing section is gradually decreased from the bottom surface to the top surface until the inner diameter is equal to the diameter of the discharge section, the inner diameter of the limiting section is gradually decreased from the bottom surface to the top surface until the inner diameter is equal to the maximum diameter of the reinforcing section, and the vertex angle of the sealing plate is abutted against the inner wall of the limiting section.

Through adopting above-mentioned technical scheme, the setting of restriction section internal diameter towards its inside slope has increased the area of contact of closing plate with the gas outlet, and the closing plate is bigger with the frictional force between the restriction section when the closing plate slides towards the gas outlet to the closing plate restriction case gliding resistance is big more, further dwindles of enhancement section internal diameter, further restricts the slip of closing plate, ensures that the gas outlet blocks to the gliding stability of closing plate.

The utility model discloses further set up to: the side, far away from the valve core, of the sealing plate is fixedly connected with a limiting block, the distance between the side walls of the limiting block in the length direction increases from top to bottom, the maximum distance between the side walls of the limiting block is equal to the distance between the opposite vertex angles of the sealing plate, and the side wall of the limiting block is arranged to be parallel to the inner wall of the reinforcing section.

Through adopting above-mentioned technical scheme, the lateral wall of restriction piece is parallel with the inner wall of enhancement section, and the gliding in-process of restriction piece orientation gas outlet is laminated with the inner wall of enhancement section, further increases the area of contact of case and gas outlet, and the setting of restriction piece has increased the weight of case for the case vertically slides down to initial position under the gravity of self when atmospheric pressure resumes normally, guarantees that the valve body realizes the stability of air current direction control.

The utility model discloses further set up to: the inner bottom surface of the release cavity is fixedly connected with a guide rod, and the closing plate is provided with a sliding groove for the guide rod to penetrate and slide.

Through adopting above-mentioned technical scheme, guide bar sliding connection realizes being connected of closing plate and guide bar in the sliding tray, and the guide bar plays the direction restriction effect for the sliding of closing plate in the release intracavity, avoids the closing plate to take place to rotate in the release intracavity and leads to the through hole to break away from with the intercommunication of gas vent.

The utility model discloses further set up to: the valve body deviates from the side provided with the exhaust port and is provided with a detection port, and the aperture of the through hole close to the exhaust port is larger than the aperture of one end close to the detection port.

Through adopting above-mentioned technical scheme, the aperture that the through hole is close to the gas vent is great, guarantees that gaseous emission along the gas vent, and the aperture that the through hole is close to the detection mouth is less, avoids a large amount of gaseous precision that influences the detection along the detection mouth discharge.

To sum up, the utility model discloses following beneficial effect has:

gaseous flow into the valve core from the air inlet, the air flue plays the guide effect to the slip of case in the valve body, the one end that the case is close to the air inlet sets up to opening and air inlet intercommunication, the one end that the air inlet was kept away from to the case is sealed, avoid the atmospheric pressure to discharge along the gas outlet when being normal, guarantee the normal use of safe overflow valve, when atmospheric pressure in the inflow valve body is normal, gaseous through-hole discharge outside the valve body, when the atmospheric pressure in the inflow valve body is too big, gaseous promotion case takes place vertical ascending slip along the air flue, make the through-hole slide to break away from the intercommunication with the gas outlet, gaseous through gas outlet discharge valve body along the overflow hole, avoid atmospheric pressure too big to cause the damage to the machine with the gas outlet intercommunication, realize the protection to the machine.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a first cross-sectional view of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

fig. 4 is a second cross-sectional view of the present invention;

FIG. 5 is an enlarged view of FIG. 4 at B;

fig. 6 is an exploded view of the present invention.

In the figure: 1. a valve body; 2. an airway; 3. an exhaust port; 4. an air inlet; 5. an air outlet; 6. a valve core; 7. a through hole; 8. an overflow aperture; 9. a release chamber; 10. a closing plate; 11. a discharge section; 12. a reinforcement section; 13. a restriction section; 14. a limiting block; 15. a guide bar; 16. a sliding groove; 17. and (6) a detection port.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

The vacuum safety overflow valve is shown in figures 1-4, and comprises a valve body 1, for example, the valve body 1 is arranged as a regular polygonal body or a cylinder, an air passage 2 is arranged in the valve body 1, an air outlet 3 communicated with the air passage 2 is arranged on the side wall of the valve body 1, an air inlet 4 communicated with the air passage 2 is arranged on the bottom surface of the valve body 1, an air outlet 5 communicated with the air passage 2 is arranged on the top surface of the valve body 1, an internally hollow valve core 6 is connected in the air passage 2 in a sliding manner, the top surface of the valve core 6 is arranged in a closed state, the bottom surface of the valve core 6 is arranged in an open state, a through hole 7 capable of communicating the interior of the valve core 6 with the air outlet 3 and a plurality of overflow holes 8 capable of communicating the interior of the valve core 6 with the air outlet 5 are arranged on the peripheral wall of the valve core 6, four circumferential arrays are arranged on the peripheral wall of the valve core 6, and a detection port 17 is arranged on one side of the valve body 1 away from the air outlet 3, detect mouthful 17 and carry out the shutoff through bolt threaded connection under natural state, when the atmospheric pressure in the valve body 1 needs to be detected, with pressure sensor threaded connection in detecting mouthful 17 department, the aperture that through hole 7 is close to gas vent 3 is greater than the aperture that is close to the one end of detecting mouthful 17.

As shown in fig. 4-6, an annular baffle coaxial with the valve core 6 is integrally formed on the inner wall at the bottom end of the air passage 2, the inner diameter of the annular baffle is smaller than the outer diameter of the valve core 6, a release cavity 9 communicated with the air passage 2 is formed in the valve body 1 near one end of the air outlet 5, the inner diameter of the release cavity 9 is larger than the inner diameter of the air passage 2, a guide rod 15 is fixedly connected to the inner bottom surface of the release cavity 9, a sliding groove 16 for the guide rod 15 to penetrate and slide is formed in the closing plate 10, the guide rod 15 is a cylindrical rod, so that the guide rod 15 slides more smoothly in the sliding groove 16, a closing plate 10 is fixedly connected to the top surface of the valve core 6, the cross-sectional area of the closing plate 10 is larger than the cross-sectional area of the air passage 2 and smaller than the cross-sectional area of the release cavity 9, the vertex angle of the closing plate 10 is set to be a circular angle and is abutted against the inner wall of the air outlet 5, the circular angle increases the contact area of the closing plate 10 and the air outlet 5, so that the friction between the closing plate 10 and the limiting section 13 is larger when the closing plate 10 slides towards the air outlet 5, thereby more stably limiting the sliding of the valve core 6 towards the air outlet 5.

As shown in fig. 4 to 6, the air outlet 5 includes a discharge section 11 in order from the top down, the internal diameter of the reinforcing section 12 is gradually decreased from the bottom surface to the top surface until the internal diameter is equal to the diameter of the discharge section 11, the internal diameter of the limiting section 13 is gradually decreased from the bottom surface to the top surface until the internal diameter is equal to the maximum diameter of the reinforcing section 12, the vertex angle of the closing plate 10 is abutted against the inner wall of the limiting section 13, a limiting block 14 is fixedly connected to one side of the closing plate 10 away from the valve core 6, the distance between the side walls of the limiting block 14 in the length direction is gradually increased from top to bottom, the maximum distance between the side walls of the limiting block 14 is equal to the distance between the opposite vertex angles of the closing plate 10, the side walls of the limiting plate are arc-shaped, the side walls of the limiting block 14 are arranged in an inclined plane and are parallel to the inner wall of the reinforcing section 12, the limiting block 14 is attached to the inner wall of the reinforcing section 12 in the process of sliding towards the air outlet 5, and the contact area between the valve core 6 and the air outlet 5 is further increased.

The working principle is as follows: when the high-pressure pneumatic valve is used, the bolt at the detection port 17 is screwed out, the pressure sensor is fixedly connected onto the valve body 1, gas flows into the valve core 6 along the gas inlet 4 under the normal state of the gas pressure, then the gas is discharged out of the valve body 1 along the gas outlet 3 along the end with the larger aperture of the through hole 7, the conduction to the gas is realized, wherein a part of the gas flowing into the valve core 6 flows into the pressure sensor along the end with the smaller aperture of the through hole 7, the detection to the gas pressure in the valve body 1 is realized, when the gas pressure flowing into the valve body 1 is overlarge, the gas pushes the valve core 6 to vertically and upwards slide in the release cavity 9 along the guide rod 15 until the side wall of the limiting plate abuts against the side wall of the reinforcing section 12, the opening of the through hole 7 abuts against the inner peripheral wall of the gas passage 2, the gas is discharged into the release cavity 9 along the overflow hole 8 and discharged out along the gap between the sealing plate 10 and the release cavity 9 along the gas outlet 5, when the air pressure returns to normal, the valve core 6 slides vertically downwards along the air passage 2 under the action of the gravity of the valve core 6 until the opening of the through hole 7 is communicated with the exhaust port 3.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a vacuum safety overflow valve, includes valve body (1), air flue (2) have been seted up in valve body (1), gas vent (3) with air flue (2) intercommunication are seted up on the lateral wall of valve body (1), air inlet (4) with air flue (2) intercommunication are seted up to the bottom surface of valve body (1), gas outlet (5) with air flue (2) intercommunication, its characterized in that are seted up to the top surface of valve body (1): the gas-liquid separator is characterized in that a hollow valve core (6) is connected in the gas channel (2) in a sliding mode, the top surface of the valve core (6) is arranged to be closed, the bottom surface of the valve core (6) is arranged to be open, and a through hole (7) capable of communicating the interior of the valve core (6) with the gas outlet (3) and a plurality of overflow holes (8) capable of communicating the interior of the valve core (6) with the gas outlet (5) are formed in the peripheral wall of the valve core (6).

2. The vacuum safety relief valve according to claim 1, characterized in that: a release cavity (9) communicated with the air passage (2) is formed in the valve body (1) close to one end of the air outlet (5), and the inner diameter of the release cavity (9) is larger than that of the air passage (2).

3. The vacuum safety relief valve according to claim 2, characterized in that: the top surface of the valve core (6) is fixedly connected with a closing plate (10), the cross section area of the closing plate (10) is larger than that of the air passage (2) and smaller than that of the release cavity (9), and the vertex angle of the closing plate (10) is abutted against the inner wall of the air outlet (5).

4. The vacuum safety relief valve according to claim 3, characterized in that: the air outlet (5) sequentially comprises a discharge section (11), a reinforcing section (12) and a limiting section (13) from top to bottom, the inner diameter of the reinforcing section (12) is gradually reduced from the bottom surface to the top surface until the inner diameter is equal to the diameter of the discharge section (11), the inner diameter of the limiting section (13) is gradually reduced from the bottom surface to the top surface until the inner diameter is equal to the maximum diameter of the reinforcing section (12), and the vertex angle of the closing plate (10) is abutted to the inner wall of the limiting section (13).

5. The vacuum safety relief valve according to claim 4, characterized in that: one side, far away from the valve core (6), of the closing plate (10) is fixedly connected with a limiting block (14), the distance between the side walls, located in the length direction, of the limiting block (14) increases progressively from top to bottom, the maximum distance between the side walls of the limiting block (14) is equal to the distance between the opposite vertex angles of the closing plate (10), and the limiting block (14) is arranged in a manner that the side wall of the inclined plane is parallel to the inner wall of the reinforcing section (12).

6. The vacuum safety relief valve according to claim 3, characterized in that: the inner bottom surface of the release cavity (9) is fixedly connected with a guide rod (15), and a sliding groove (16) for the guide rod (15) to penetrate and slide is formed in the closing plate (10).

7. The vacuum safety relief valve of claim 1, wherein: detection port (17) have been seted up to valve body (1) one side that deviates from to be equipped with gas vent (3), the aperture that through hole (7) are close to gas vent (3) is greater than the aperture that is close to detection port (17) one end.