CN211010046U

CN211010046U - Exhaust valve with good sealing performance

Info

Publication number: CN211010046U
Application number: CN201921785066.0U
Authority: CN
Inventors: 闫爱萍
Original assignee: Hubei Zhengxin Tube Co ltd
Current assignee: Hubei Zhengxin Tube Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-07-14
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses a discharge valve that sealing performance is good relates to valve technical field, for solving the current relatively poor problem of leakproofness. The lower extreme of valve body is provided with the intake pipe, the bottom of valve body is provided with first valve block, the intermediate position department of first valve block is provided with admission line, the top of first valve block is provided with the second valve block, the inside of second valve block is annular array and has seted up a plurality of air vents, the intermediate position department of second valve block below is provided with first case, install first spring between first valve block and the second valve block, the intermediate position department of second valve block top is provided with the second case, the inside upper end of valve body is provided with the disk seat, the intermediate position department of disk seat is provided with the pipeline of giving vent to anger, the inner wall of the pipeline of giving vent to anger is provided with the rubber ring, install the second spring between disk seat and the second valve block, the upper end of valve body is provided with the outlet duct, the internally mounted of outlet.

Description

Exhaust valve with good sealing performance

Technical Field

The utility model relates to the technical field of valves, specifically be a discharge valve that sealing performance is good.

Background

The exhaust valve is a device for exhausting in the operation process of the heating ventilation system and the heating ventilation air-conditioning system, a plurality of adverse effects caused by gases such as hydrogen, oxygen and the like released by water during heating can damage the system and reduce the thermal effect, if the gases cannot be exhausted in time, a plurality of adverse consequences can be generated, so that the waste gas in the system must be exhausted in time, and therefore, the important function of utilizing the exhaust valve can be seen.

However, the existing exhaust valve is poor in sealing performance, exhaust is guaranteed, water cannot be blocked, water waste is caused, and therefore the existing requirements are not met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a discharge valve that sealing performance is good to solve the relatively poor problem of leakproofness that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an exhaust valve with good sealing performance comprises a valve body, wherein an air inlet pipe is arranged at the lower end of the valve body, sliding grooves are formed in two sides of the interior of the valve body, a first valve plate is arranged at the bottom of the valve body, an air inlet pipeline is arranged at the middle position of the first valve plate, a second valve plate is arranged above the first valve plate, a plurality of air holes are formed in the second valve plate in an annular array mode, a first valve core is arranged at the middle position below the second valve plate and extends to the outside of the air inlet pipeline, a second rubber film is arranged at one end, close to the second valve plate, of the first valve core, a first spring is installed between the first valve plate and the second valve plate, a second valve core is arranged at the middle position above the second valve plate, a second rubber film is arranged at one end, close to the second valve plate, of the second valve core, and a valve seat is arranged at the upper, the middle position department of disk seat is provided with the pipeline of giving vent to anger, the inner wall of the pipeline of giving vent to anger is provided with the rubber ring, install the second spring between disk seat and the second valve piece, the upper end of valve body is provided with the outlet duct, the internally mounted of outlet duct has the dust screen.

Preferably, first valve block comprises foam block and first rubber membrane, and first rubber membrane is located the top of foam block, first rubber membrane is connected through pasting with the foam block, first valve block passes through spout sliding connection with the valve body.

Preferably, the first valve core, the second valve core and the second valve sheet are of an integral structure, spring installation grooves are formed in the upper end and the lower end of the second valve sheet, the first spring is fixedly connected with the second valve sheet and the first valve sheet, and the second spring is fixedly connected with the second valve sheet and the valve seat.

Preferably, the second rubber membrane is connected with the first valve core in a sticking manner, and the second rubber membrane is connected with the second valve core in a sticking manner.

Preferably, the diameter of the inlet pipe is forty-five millimeters, the maximum diameter of the first valve core is sixty millimeters, the minimum diameter of the first valve core is twenty millimeters, the diameter of the first valve core gradually decreases from one end close to the second valve sheet to the other end, the diameter of the outlet pipe is thirty-five millimeters, the maximum diameter of the second valve core is fifty millimeters, the minimum diameter of the second valve core is fifteen millimeters, and the diameter of the second valve core gradually decreases from one end close to the second valve sheet to the other end.

Preferably, the dust screen is connected with the air outlet pipe through a clamping groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a through set up the second valve block in the inside of valve body, second valve block passes through spout sliding connection with the valve body, when using, through in the valve body inside near the one end of intake pipe be provided with first valve block, during normal operation, first valve block is located the valve body bottom and is quiescent condition by the influence of gravity, gas passes through the admission line between first case and the first valve block and gets into inside, through the air vent on the second valve block from the outlet duct between valve seat and the second valve block outwards discharge, when the internal water level is too high, because be provided with the foam block in the bottom of first valve block, rise under the effect of buoyancy, because the diameter of first case increases gradually towards the second valve block direction, when the first valve block rises, the admission line constantly reduces, until at last with first case near the one end of second valve block completion coincidence, through be provided with the second rubber membrane in the one end that the first case is close to the second valve block, the upper end of the first valve plate is provided with a first rubber membrane, when the first rubber membrane and the second rubber membrane are overlapped, the two rubber membranes are mutually abutted, as the friction force between the rubbers is large, the two rubber membranes are difficult to move under the action of the friction force when the rubbers are attached, thereby ensuring the sealing property and reducing the outflow of water, meanwhile, the upper end of the second valve plate is provided with a second valve core, the second valve core can further ensure the whole sealing property, when the water pressure is increased, the second valve core is driven by the second valve plate to be pushed towards the direction of an outlet pipe, a rubber ring is attached to the inner wall of an outlet pipe of the valve seat, when the second rubber membrane on the second valve core is contacted with the rubber ring, secondary sealing can be formed, the leakage of the water is further prevented, when the water pressure is changed, the whole body descends along with the influence of gravity, the water flows into a water pipe again through an air vent and the inlet pipe, through the design of the second valve, and then avoid revealing of water under the prerequisite of guaranteeing the air discharge, saved the water resource.

2. The utility model discloses an install first spring between first valve block and second valve block, install the second spring between second valve block and the disk seat, the elasticity of first spring is less than the elasticity of second spring, in the use, because the elasticity of first spring is less, under the less condition of rivers pressure, holistic sealed is guaranteed in cooperation between first valve block and the second valve block, when rivers are great, second valve block carries out work in succession with the second spring, through the setting of spring, can adjust according to hydraulic difference on the one hand, avoid the long-time motion of inner structure and the damage that causes, and then improved life, in addition, the spring has the effect of buffering, avoid water pressure increase suddenly, the damage that collides mutually and causes between valve block and the valve block.

3. The utility model discloses a be provided with the dust screen in the inside of outlet duct, the dust screen has the effect of stopping the dust, avoids in the use, and inside the dust fell into the valve body for a long time, caused the relatively poor problem of result of use.

Drawings

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

fig. 2 is a perspective view of a second valve plate of the present invention;

fig. 3 is a top view of the present invention.

In the figure: 1. a valve body; 2. an air inlet pipe; 3. an air outlet pipe; 4. a first valve plate; 5. a first rubber film; 6. a foam block; 7. a chute; 8. a second valve plate; 9. a vent hole; 10. a first valve spool; 11. a first spring; 12. a second valve core; 13. a second spring; 14. an air outlet pipe; 15. a valve seat; 16. a rubber ring; 17. a dust screen; 18. a second rubber film; 19. a spring mounting groove; 20. an air inlet duct.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: an exhaust valve with good sealing performance comprises a valve body 1, an air inlet pipe 2 is arranged at the lower end of the valve body 1, sliding grooves 7 are arranged on two sides inside the valve body 1, a first valve plate 4 is arranged at the bottom of the valve body 1, an air inlet pipeline 20 is arranged at the middle position of the first valve plate 4, a second valve plate 8 is arranged above the first valve plate 4, a plurality of vent holes 9 are formed in the second valve plate 8 in an annular array mode, a first valve core 10 is arranged at the middle position below the second valve plate 8, the first valve core 10 extends to the outside of the air inlet pipeline 20, a second rubber film 18 is arranged at one end, close to the second valve plate 8, of the first valve core 10, a first spring 11 is arranged between the first valve plate 4 and the second valve plate 8, a second valve core 12 is arranged at the middle position above the second valve plate 8, and a second rubber film 18 is arranged at one end, close to the second valve, the upper end of the interior of the valve body 1 is provided with a valve seat 15, an air outlet pipeline 14 is arranged in the middle of the valve seat 15, the inner wall of the air outlet pipeline 14 is provided with a rubber ring 16, a second spring 13 is arranged between the valve seat 15 and the second valve sheet 8, an air outlet pipe 3 is arranged at the upper end of the valve body 1, and a dust screen 17 is arranged inside the air outlet pipe 3.

Further, first valve block 4 comprises foam 6 and first rubber membrane 5, and first rubber membrane 5 is located foam 6's top, and first rubber membrane 5 is connected through pasting with foam 6, and first valve block 4 passes through spout 7 sliding connection with valve body 1, owing to be provided with foam 6 in the bottom of first valve block 4, rises under the effect of buoyancy.

Further, first case 10, second case 12 and second valve block 8 structure as an organic whole, the upper and lower both ends of second valve block 8 all are provided with spring mounting groove 19, first spring 11 and second valve block 8 and first valve block 4 fixed connection, second spring 13 and second valve block 8 and disk seat 15 fixed connection, because first spring 11's elasticity is less, under the less condition of rivers pressure, the holistic sealing is guaranteed in the cooperation between first valve block 4 and the second valve block 8, when rivers are great, second valve block 8 and second spring 13 work in succession.

Further, the second rubber film 18 is connected with the first valve core 10 through pasting, the second rubber film 18 is connected with the second valve core 12 through pasting, when the first rubber film 5 and the second rubber film 18 are overlapped, the two rubber films are mutually abutted, and due to the fact that friction force between the rubbers is large, the two rubber films are difficult to move under the action of friction force during pasting, sealing performance is guaranteed, and outflow of water is reduced.

Further, the diameter of the inlet duct 20 is forty-five millimeters, the maximum diameter of the first valve core 10 is sixty millimeters, and the minimum diameter of the first valve core 10 is twenty millimeters, the diameter of the first valve core 10 is gradually reduced from one end close to the second valve plate 8 to the other end, the diameter of the outlet duct 14 is thirty-five millimeters, the maximum diameter of the second valve core 12 is fifty millimeters, and the minimum diameter of the second valve core 12 is fifteen millimeters, the diameter of the second valve core 12 is gradually reduced from one end close to the second valve plate 8 to the other end, because the diameter of the first valve core 10 gradually increases towards the second valve plate 8, the inlet duct 20 continuously reduces while the first valve core 10 rises, until finally completing the coincidence with one end of the first valve core 10 close to the second valve plate 8.

Further, the dust screen 17 is connected with the outlet duct 3 through the draw-in groove, and the dust screen 17 has the effect of stopping the dust, avoids in the use, and the dust falls into valve body 1 inside for a long time.

The working principle is as follows: when the valve is used, the first valve plate 4 is arranged at one end close to the air inlet pipe 2 in the valve body 1, when the valve works normally, the first valve plate 4 is in a static state at the bottom of the valve body 1 under the influence of gravity, air enters the valve body through the air inlet pipeline 20 between the first valve core 10 and the first valve plate 4, and is discharged outwards from the air outlet pipeline 14 between the valve seat 15 and the second valve core 12 through the vent hole 9 on the second valve plate 8, when the water level in the valve body is overhigh, the foam block 6 is arranged at the bottom of the first valve plate 4 and rises under the action of buoyancy, because the diameter of the first valve core 10 gradually increases towards the second valve plate 8, the air inlet pipeline 20 continuously reduces while the first valve plate 4 rises until the diameter of the first valve core 10 is finally overlapped with one end close to the second valve plate 8, and the second rubber film 18 is arranged at one end of the first valve core 10 close to the second valve plate, the upper end of the first valve plate 4 is provided with a first rubber membrane 5, when the two rubber membranes are overlapped, the two rubber membranes are mutually abutted, because the friction force between the rubbers is large, the two rubber membranes are difficult to move under the action of the friction force when the two rubber membranes are attached, so that the sealing performance is ensured, the outflow of a water body is reduced, meanwhile, the upper end of the second valve plate 8 is provided with a second valve core 12, the whole sealing performance can be further ensured by the second valve core 12, when the water pressure is increased, the second valve core 12 is driven by the second valve plate 8 to be pushed towards the direction of an outlet pipe, a rubber ring 16 is attached to the inner wall of an outlet pipe 14 of the valve seat 15, and when a second rubber membrane 18 on the second valve core 12 is contacted with the rubber ring 16, secondary sealing can be formed, so that the water body is further prevented from leaking, when the water pressure is reduced, the whole body is reduced along with the influence, with slidingtype secondary seal's structure, guaranteed the leakproofness of discharge valve in the use, and then avoid revealing of water under the prerequisite of guaranteeing the air discharge, saved the water resource.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a discharge valve that sealing performance is good, includes valve body (1), its characterized in that: the air inlet pipe (2) is arranged at the lower end of the valve body (1), sliding grooves (7) are formed in two sides of the interior of the valve body (1), a first valve plate (4) is arranged at the bottom of the valve body (1), an air inlet pipeline (20) is arranged at the middle position of the first valve plate (4), a second valve plate (8) is arranged above the first valve plate (4), a plurality of vent holes (9) are formed in the interior of the second valve plate (8) in an annular array mode, a first valve core (10) is arranged at the middle position below the second valve plate (8), the first valve core (10) extends to the exterior of the air inlet pipeline (20), a second rubber film (18) is arranged at one end, close to the second valve plate (8), of the first valve core (10), a first spring (11) is installed between the first valve plate (4) and the second valve plate (8), a second valve core (12) is arranged at the middle position above the second valve plate (8), and the one end that second valve block (12) is close to second valve block (8) is provided with second rubber membrane (18), the inside upper end of valve body (1) is provided with disk seat (15), the intermediate position department of disk seat (15) is provided with pipeline (14) of giving vent to anger, the inner wall of pipeline (14) of giving vent to anger is provided with rubber ring (16), install second spring (13) between disk seat (15) and second valve block (8), the upper end of valve body (1) is provided with outlet duct (3), the internally mounted of outlet duct (3) has dust screen (17).

2. The exhaust valve with good sealing performance according to claim 1, is characterized in that: first valve block (4) comprise foam block (6) and first rubber membrane (5), and first rubber membrane (5) are located the top of foam block (6), first rubber membrane (5) are connected through pasting with foam block (6), first valve block (4) pass through spout (7) sliding connection with valve body (1).

3. The exhaust valve with good sealing performance according to claim 1, is characterized in that: first case (10), second case (12) and second valve block (8) structure as an organic whole, the upper and lower both ends of second valve block (8) all are provided with spring mounting groove (19), first spring (11) and second valve block (8) and first valve block (4) fixed connection, second spring (13) and second valve block (8) and disk seat (15) fixed connection.

4. The exhaust valve with good sealing performance according to claim 1, is characterized in that: the second rubber film (18) is connected with the first valve core (10) in a sticking mode, and the second rubber film (18) is connected with the second valve core (12) in a sticking mode.

5. The exhaust valve with good sealing performance according to claim 1, is characterized in that: the diameter of the air inlet pipe (20) is forty-five millimeters, the maximum diameter of the first valve core (10) is sixty millimeters, the minimum diameter of the first valve core (10) is twenty millimeters, the diameter of the first valve core (10) is gradually reduced from one end close to the second valve plate (8) to the other end, the diameter of the air outlet pipe (14) is thirty-five millimeters, the maximum diameter of the second valve core (12) is fifty millimeters, the minimum diameter of the second valve core (12) is fifteen millimeters, and the diameter of the second valve core (12) is gradually reduced from one end close to the second valve plate (8) to the other end.

6. The exhaust valve with good sealing performance according to claim 1, is characterized in that: the dust screen (17) is connected with the air outlet pipe (3) through a clamping groove.