CN216242376U

CN216242376U - Exhaust valve

Info

Publication number: CN216242376U
Application number: CN202122283424.1U
Authority: CN
Inventors: 石正兵
Original assignee: Guangdong Taili Technology Group Co Ltd
Current assignee: Guangdong Taili Technology Group Co Ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-04-08
Anticipated expiration: 2031-09-18

Abstract

The utility model discloses an exhaust valve, which comprises a seat body, an upper cover and a movable valve core, wherein a first guide structure for guiding the lifting of the movable valve core is arranged between the top of the upper cover and the upper part of the movable valve core; the second guide structure comprises an inserting column arranged at the bottom of the movable valve core and a guide hole arranged at the bottom of the inner cavity, the inserting column is inserted into the guide hole, and the guide hole deviates from the center of the air inlet. The utility model has the advantages of up-and-down movement by means of the hard valve core, smooth movement, simple production process, stable sealing performance, high air intake and exhaust speed and small volume.

Description

Exhaust valve

Technical Field

The utility model relates to the technical field of air valves, in particular to an exhaust valve.

Background

The structure of pneumatic valve on the market at present has the multiple, and the common flexible glue air lock that moves about realizes the exhaust effect, but because the flexible material hardly controls off-the-shelf defective rate when the flexible glue is made, has the deformation just to play the effect of check valve a little.

The utility model discloses a patent of utility model CN 213017893U discloses a check valve and vacuum storage bag. The hard rubber valve core finished product is easier to manufacture and shape, the yield is high, and the soft rubber matched with the hard rubber valve core can be well sealed. At the same time, the valve can be enlarged in size due to the hard glue, so that the air can be exhausted more quickly. However, the center of the bottom of the valve core of the gas valve is provided with a large guide post, which prevents gas from entering from the center of the gas inlet and forces the gas to enter only from two sides of the gas inlet. On one hand, the central guide column obviously reduces the effective air inlet area of the air inlet, so that the exhaust efficiency of the air valve is reduced; on the other hand, studies show that the gas enters from the center of the gas inlet at a higher speed than the gas enters from the edge of the gas inlet, and the central guide column prevents the gas from entering from the center of the gas inlet, so that the gas exhaust speed is seriously hindered.

The present invention has been made based on such a situation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides the exhaust valve which moves up and down by means of a hard valve core, is smooth in movement, simple in production process, stable in sealing performance, high in air inlet and exhaust speed and small in size.

The utility model is realized by the following technical scheme:

an exhaust valve, comprising:

the seat body is provided with an inner cavity, and the inner cavity is provided with an air inlet and an air outlet;

the upper cover is arranged on the seat body and can lift relative to the seat body;

the movable valve core is arranged between the upper cover and the inner cavity and can lift up and down between the upper cover and the inner cavity so as to open or close the air inlet;

a first guide structure for guiding the lifting of the movable valve core is arranged between the top of the upper cover and the upper part of the movable valve core, and a second guide structure for guiding the lifting of the movable valve core is arranged between the bottom of the inner cavity and the lower part of the movable valve core;

the second guide structure comprises an inserting column arranged at the bottom of the movable valve core and a guide hole arranged at the bottom of the inner cavity, the inserting column is inserted into the guide hole, and the guide hole deviates from the center of the air inlet.

In an exhaust valve as described above, the guide holes are located at the inner edge of the inlet port.

In the exhaust valve as described above, the bottom surface and the side surface facing the intake port of the guide hole are open.

According to the exhaust valve, the air inlet is provided with the air inlet fins, and the side walls of the guide holes are formed by upwards extending the air inlet fins.

In the exhaust valve, the number of the insertion columns and the number of the guide holes are at least two.

In the exhaust valve, the insertion columns and the guide holes are respectively and symmetrically distributed around the central axis of the air valve.

According to the exhaust valve, the movable valve core comprises a valve core main body, the first guide structure comprises a guide convex shaft arranged at the center of the top of the valve core main body, and the top center of the upper cover is provided with a guide groove for the guide convex shaft to insert and slide up and down.

According to the exhaust valve, the sunken groove which can be used for downwards inserting the side wall which is enclosed into the guide groove is formed between the bottom of the guide convex shaft and the valve core main body.

According to the exhaust valve, the side wall of the upper cover is provided with the limiting protrusion, the side wall of the seat body is provided with the inclined guide groove, and the limiting protrusion is embedded into the guide groove and can move along the guide groove so as to perform lifting movement; a groove-shaped or notch-shaped mounting groove is formed above the guide groove, and the mounting groove extends downwards to the upper portion of the lower end of the guide groove from the upper end of the side wall of the seat body.

According to the exhaust valve, the periphery of the air inlet is provided with the flexible sealing gasket, the movable valve core is a hard valve core, and when the movable valve core is tightly pressed on the sealing gasket, the movable valve core covers the air inlet.

Compared with the prior art, the utility model has the following advantages:

1. in the utility model, the valve core main body of the movable valve core adopts a plate shape or a cover shape, a central column structure is not used between the movable valve core and the air inlet, the guide hole deviates from the center of the air inlet, and the center of the air inlet smoothly enters air, so that the effective air inlet area of the air inlet is increased, the utilization efficiency of the air inlet area of the air inlet is improved, and the exhaust speed is improved.

2. First guide structure and second guide structure are the lift direction of movable valve core from two upper and lower positions respectively to movable valve core lift is balanced stable, can not die with other subassemblies card on the way in the lift. Plug and insert and reciprocate at the guiding hole, be convenient for the lift direction of movable valve core, the direction protruding axle is inserted for the lift direction of movable valve core in the direction recess, is the lift direction of movable valve core from two upper and lower positions respectively like this to movable valve core goes up and down balancedly smoothly, can not block and die.

3. The guide holes are located at the inner edge of the air inlet. Like this, the guiding hole is established at the inward flange of air inlet on the one hand, and the skew air inlet center that the post also can correspond is inserted to the skew air inlet center that so will dodge the air inlet center, lets gas can be smoothly discharged from the air inlet center, and exhaust speed will be a lot fast.

4. The convex edge can enable the guide convex shaft to slide up and down in the guide groove more smoothly. Specifically, the convex edge enables an exhaust gap to be formed between the guide convex shaft and the guide groove, and the gas in the guide groove can be smoothly exhausted, so that the movable valve core can freely fall after the upper cover is lifted, and the guide convex shaft is prevented from being sucked in the guide groove and not falling; the convex edge is up-down and smooth in surface, so that the resistance between the guide convex shaft and the guide groove is smaller.

5. A groove-shaped or notch-shaped mounting groove is formed above the guide groove, and the mounting groove extends downwards to the upper portion of the lower end of the guide groove from the upper end of the side wall of the seat body. The mounting groove is for in the guide way can be installed into fast to the spacing arch of convenience, and in the in-process on packing the upper cover into the pedestal promptly, the spacing arch is aimed at earlier and is inserted the mounting groove, then pushes down the upper cover, makes spacing arch move down along the mounting groove, and spacing arch will enter into in the guide way. The upper cover and the seat body are conveniently and quickly butted, the limiting protrusions are conveniently and quickly clamped into the guide grooves, and assembly is easy. The mounting groove is approximately triangular and is formed by thinning the side wall of the seat body. When not setting up the mounting groove, spacing arch can only aim at the upper end of guide way earlier, then pushes down. Because if need follow the top of guide way lower extreme and directly push in, then need overcome one end longer distance, because the lateral wall of pedestal is thick on the way of marcing, the deformation that leads to the upper cover is very big, keeps so big deformation easily to lead to the upper cover periphery to split in the installation for a long time. Now, the upper end of the guide groove does not need to be aligned, and the guide groove can be pressed in from any position on the upper side of the whole section of the guide groove.

Drawings

The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings, in which:

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a perspective view of the upper cover;

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

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

An exhaust valve as shown in fig. 1 to 4, comprising:

the seat comprises a seat body 1, wherein an inner cavity 11 is arranged on the seat body 1, and an air inlet 111 and an air outlet 112 are arranged at the bottom of the inner cavity 11;

the upper cover 2 is arranged on the seat body 1 and can lift relative to the seat body 1;

the movable valve core 4 is arranged between the upper cover 2 and the bottom of the inner cavity 11 and can lift up and down between the upper cover 2 and the bottom of the inner cavity to open or close the air inlet 111, and the movable valve core 4 comprises a plate-shaped or cover-shaped valve core main body 41;

a first guide structure for guiding the movable valve core 4 to ascend and descend is arranged between the top of the upper cover 2 and the upper part of the movable valve core 4, and a second guide structure for guiding the movable valve core 4 to ascend and descend is arranged between the bottom of the inner cavity 11 and the lower part of the movable valve core 4;

the second guiding structure comprises an inserting column 43 arranged at the bottom of the movable valve core 4 and a guiding hole 12 arranged at the bottom of the inner cavity 11, wherein the inserting column 43 is inserted into the guiding hole 12, and the guiding hole 12 deviates from the center of the air inlet 111. Preferably, the post 43 is tapered with a large top and a small bottom for sliding up and down. Further, the movable valve element 4 is preferably of a rigid construction, which provides support for a plug 43 disposed off-center from the movable valve element 4.

In the present invention, the valve body 41 of the movable valve element 4 is in a plate shape or a cover shape, a central column structure is not used between the movable valve element 4 and the air inlet 111, the guide hole 12 is deviated from the center of the air inlet 111, and air is smoothly fed from the center of the air inlet 111, which is beneficial to increase the effective air inlet area of the air inlet 111, improve the utilization efficiency of the air inlet area of the air inlet 111, and improve the exhaust speed.

First guide structure and second guide structure are the lift direction of movable valve core 4 from two upper and lower positions respectively to movable valve core 4 goes up and down balanced stable, can not die with other subassemblies card on the way going up and down. Namely, the inserting column 43 is inserted in the guiding hole 12 to move up and down, so as to be convenient for the lifting guide of the movable valve core 4, the guiding convex shaft 42 is inserted in the guiding groove 22 to be the lifting guide of the movable valve core 4, and the lifting guide of the movable valve core 4 is respectively carried out from the upper position and the lower position, so that the movable valve core 4 can be lifted and descended smoothly and can not be blocked.

Preferably, in the present invention, the seat body 1, the upper cover 2, and the movable valve core 4 are all rigid. Especially, when the movable valve core 4 is a hard valve core, the upper and lower movements can be smooth, and the valve is durable for a long time. Specifically, the movable valve core 4 is arranged as a hard valve core, the structural strength of the hard valve core is high, the valve core 4 can be made thinner and the cross section size is larger, so that the air inlet 111 can be made larger, and the air displacement can be increased; the cross section of the soft valve core cannot be too large, and the area capable of plugging is limited. Meanwhile, the hard valve core can also meet the condition that the second guide structure is arranged at the non-central position of the valve core, and the exhaust efficiency can be obviously improved; the flexible valve core cannot meet the requirement, because if the second guide structure is arranged at the edge of the overlarge flexible valve core, the support strength is insufficient, the guide effect cannot be achieved, and the exhaust efficiency cannot be obviously improved; in addition, compared with the flexible valve core such as silica gel, the flexible valve core is rough, the resistance is large during lifting, the hard valve core is smooth, and the lifting is smooth.

In a more specific embodiment of the present invention, the guide holes 12 are located at the inner edge of the air inlet 111. Therefore, on one hand, the guide hole 12 is arranged at the inner edge of the air inlet 111 and is deviated from the center of the air inlet 111, and the inserted column 43 is correspondingly deviated from the center of the air inlet 111, so that the center of the air inlet 111 is avoided, air can smoothly enter the exhaust valve from the center of the air inlet 111, and the air inlet speed is much higher.

In a more specific embodiment of the present invention, the bottom surface of the guide hole 12 and the side surface facing the air inlet 111 are open. Thus, as shown in fig. 4, the frame enclosing the guide hole 12 is hollow, that is, the gas can enter from the bottom surface and be discharged from the side surface of the guide hole 12, so that the effective gas inlet area of the gas inlet 111 is increased.

In a more specific embodiment of the present invention, the air inlet 111 is provided with an air inlet fin 16, and the fin 16 can effectively prevent foreign matters from entering and blocking the air valve.

The side wall of the guide hole 12 is formed by extending upward an air intake fin 16. That is, the guide hole 12 is surrounded by the fins 16 and the side wall of the air inlet 111, which is convenient for forming and manufacturing, and the guide hole 12 has high structural strength, is not easy to break and damage, and is durable for a long time

In a more specific embodiment of the present invention, the at least two insertion posts 43 and the at least two guide holes 12 are symmetrically distributed around the central axis of the air valve. So that the movable valve element 4 remains stable against tilting during lifting.

In a more specific embodiment of the present invention, the first guide structure includes a guide protruding shaft 42 provided at the center of the top of the valve body 41, and the top of the upper cover 2 is provided at the center with a guide groove 22 into which the guide protruding shaft 42 is inserted and slides up and down. Preferably, the guide protruding shaft 42 is tapered with a small upper part and a large lower part so as to slide up and down. Preferably, a plurality of vertical protruding ridges 421 are provided on the outer side wall of the guide protruding shaft 42. The ridge 421 can make the guide protruding shaft 42 slide up and down in the guide groove 22 more smoothly. Specifically, the air exhaust gap is formed between the guide protruding shaft 42 and the guide groove 22 by the protruding edge 421, so that the air in the guide groove 22 can be exhausted smoothly, and after the upper cover 2 is lifted, the movable valve core 4 can fall freely, and the guide protruding shaft 42 is prevented from being sucked in the guide groove 22 and not falling (if the air in the guide groove 22 cannot be exhausted, negative pressure is formed between the guide groove 22 and the guide protruding shaft 42 when the guide protruding shaft 42 is lowered, so that the guide protruding shaft 42 is sucked); the ridges 421 are vertically oriented and have smooth surfaces, so that the resistance between the guide protruding shaft 42 and the guide groove 22 is smaller.

In a more specific embodiment of the present invention, a sunken groove 44 is formed between the bottom of the guide protruding shaft 42 and the valve core body 41, and the side wall of the guide groove 22 can be inserted downwards. The sinking groove 44 can effectively increase the stroke of the movable valve core 4, that is, when the valve core main body 41 rises to the original maximum height (that is, the lower end of the side wall of the guide groove 22 reaches the top surface of the valve core main body 41), because the side wall of the guide groove 22 can also be inserted downwards into the sinking groove 44, the movable valve core 4 can also continue to rise for a certain distance. This means that the exhaust channel between the movable valve core 4 and the seat body 1 can be opened more and the exhaust speed is faster under the condition of the same volume of the exhaust valve. Thus, the volume of the exhaust valve is miniaturized, namely the exhaust valve can be made smaller under the condition of ensuring the exhaust capacity of the exhaust valve.

Preferably, the guide groove 22 is further provided at the periphery thereof with a limiting wall 24 for limiting the maximum insertion depth of the guide protruding shaft 42 in the guide groove 22, so as to prevent the guide protruding shaft 42 from being caught in the guide groove 22. When the upper cover 2 locks the movable valve core 4, the limiting wall 24 presses the movable valve core 4 downwards, and the contact part of the limiting wall is positioned on the periphery of the valve core main body 41, so that the pressure vertically acts on the periphery of the valve core main body 41. Because the outer periphery of the valve core body 41 is pressed against the sealing gasket 3 (the sealing gasket 3 is described in detail below), the structure can optimize the force transmission effect, so that the outer periphery of the valve core body 41 is tightly buckled on the sealing gasket 3.

Preferably, the side walls of the guide groove 22 and/or the limiting wall 24 are provided with a plurality of notches 221 for balancing air pressure, so that the movable valve element 4 can freely fall without being sucked by air after the upper cover 2 is lifted. Namely, when exhausting, gas enters the gas valve from the gas inlet 111 to push the movable valve core 4 to rise until the movable valve core 4 is pushed to the limit wall 24; the cavity thus formed between the movable valve element 4, the limiting wall 24 and the upper cover 2 may create a certain negative pressure which may prevent the movable valve element 4 from falling down at the end of the venting.

In a more specific embodiment of the present invention, a limiting protrusion 23 is disposed on a sidewall of the upper cover 2, an inclined guide groove 13 is disposed on a sidewall of the seat body 1, and the limiting protrusion 23 is embedded in the guide groove 13 and can move along the guide groove 13 to perform a lifting movement. When the upper cover 2 is rotated, the limiting protrusion 23 slides along the inclined second guide groove 13, thereby achieving the lifting of the upper cover 2. Simple structure and convenient use.

In a more specific embodiment of the present invention, the lower end and/or the upper end of the guide groove 13 is provided with a vertical clamping column 131, and the limiting protrusion 23 is provided with a clamping groove 231 into which the clamping column 131 can be clamped. When the limiting protrusions 23 slide to the lower and/or upper ends of the guide grooves 13, the locking posts 131 are locked in the locking slots 231 to lock the upper cover 2 to be lifted.

In a more specific embodiment of the present invention, a groove-shaped or notch-shaped installation groove 14 is provided above the guide groove 13, and the installation groove 14 extends downward from the upper end of the side wall of the seat body 1 to above the lower end of the guide groove 13. Preferably, the mounting groove 14 is provided above the lower end of the guide groove 13. As shown in fig. 2, the mounting groove 14 is for facilitating the limit protrusion 23 to be quickly mounted into the guide groove 13, that is, in the process of mounting the upper cover 2 on the seat body 1, the limit protrusion 23 is firstly aligned and inserted into the mounting groove 14, and then the upper cover 2 is pressed down to move the limit protrusion 23 down along the mounting groove 14, so that the limit protrusion 23 can enter into the guide groove 13. The upper cover 2 and the seat body 1 are conveniently and quickly butted, the limiting bulge 23 is conveniently and quickly clamped into the guide groove 13, and the assembly is easy. The mounting groove 14 is substantially triangular and is formed by thinning the side wall of the seat body 1. When the mounting groove 14 is not provided, the stopper protrusion 23 can be first aligned with the upper end of the guide groove 13 and then pressed downward. Because if the upper end of the guide groove 13 is pressed directly from the lower end, the longer distance of the end needs to be overcome, the deformation of the upper cover 2 is large due to the thicker side wall of the base body 1 in the process of traveling, and the periphery of the upper cover 2 is easy to crack when the large deformation is kept for a long time in the installation process. Now, the upper end of the guide groove 13 does not need to be aligned, and the guide groove 13 can be pressed in from any position on the upper side of the whole section.

In a more specific embodiment of the present invention, a flexible gasket 3 is disposed around the inlet port 111, and when the movable valve element 4 is pressed against the gasket 3, the movable valve element 4 covers the inlet port 111. That is, when the valve body 41 closes the intake port 111, the valve body 41 is pressed against the gasket 3, thereby increasing the sealing performance between the valve body 41 and the bottom of the cavity 11 and preventing gas leakage. Preferably, the outer edge of the valve core body 41 is provided with a downwardly protruding sidewall (i.e. the valve core body 41 is in a cover shape), and when the valve core body 41 closes the air inlet 111, the sidewall is firstly contacted with the sealing gasket 3 to form a seal, so as to ensure a good sealing effect.

The sealing gasket 3 is preferably made of rubber or silicone material.

In the preferred embodiment of the present invention, the bottom of the housing 1 is provided with a receiving groove 15 for receiving the sealing gasket 3, so as to mount and fix the sealing gasket 3.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An exhaust valve, comprising:

the seat body (1), wherein an inner cavity (11) is arranged on the seat body (1), and the inner cavity (11) is provided with an air inlet (111) and an air outlet (112);

the upper cover (2) is arranged on the base body (1) and can lift relative to the base body (1);

the movable valve core (4) is arranged between the upper cover (2) and the inner cavity (11) and can lift up and down between the upper cover and the inner cavity to open or close the air inlet (111);

a first guide structure for guiding the movable valve core (4) to ascend and descend is arranged between the top of the upper cover (2) and the upper part of the movable valve core (4), and a second guide structure for guiding the movable valve core (4) to ascend and descend is arranged between the bottom of the inner cavity (11) and the lower part of the movable valve core (4);

the second guide structure comprises an insertion column (43) arranged at the bottom of the movable valve core (4) and a guide hole (12) arranged at the bottom of the inner cavity (11), the insertion column (43) is inserted into the guide hole (12), and the guide hole (12) deviates from the center of the air inlet (111).

2. A vent valve according to claim 1, wherein: the guide hole (12) is located at the inner edge of the air inlet (111).

3. A vent valve according to claim 2, wherein: the bottom surface and the side surface facing the air inlet (111) of the guide hole (12) are both open.

4. A vent valve according to claim 3, wherein: the air inlet (111) is provided with air inlet fins (16), and the side wall of the guide hole (12) is formed by upwards extending the air inlet fins (16).

5. An exhaust valve according to any one of claims 1 to 4, characterised in that: the number of the inserting columns (43) and the number of the guide holes (12) are at least two.

6. An exhaust valve according to claim 5 wherein: the inserted columns (43) and the guide holes (12) are symmetrically distributed around the central axis of the exhaust valve respectively.

7. A vent valve according to claim 1, wherein: the movable valve core (4) comprises a valve core main body (41), the first guide structure comprises a guide convex shaft (42) arranged at the center of the top of the valve core main body (41), and a guide groove (22) which can be inserted by the guide convex shaft (42) and can slide up and down is arranged at the center of the top of the upper cover (2).

8. A vent valve according to claim 7, wherein: a sunken groove (44) which is sunken and can be used for enclosing the side wall of the guide groove (22) to be inserted downwards is arranged between the bottom of the guide convex shaft (42) and the valve core main body (41).

9. A vent valve according to claim 1, wherein: the side wall of the upper cover (2) is provided with a limiting bulge (23), the side wall of the seat body (1) is provided with an inclined guide groove (13), and the limiting bulge (23) is embedded into the guide groove (13) and can move along the guide groove (13) so as to perform lifting movement; the top of guide way (13) is equipped with recess form or breach form mounting groove (14), just mounting groove (14) extend downwards to the top of guide way (13) lower extreme from the lateral wall upper end of pedestal (1).

10. A discharge valve according to any of claims 1-4, 7-9, characterized in that: the flexible sealing gasket (3) is arranged at the periphery of the air inlet (111), the movable valve core (4) is a hard valve core, and when the movable valve core (4) is tightly pressed on the sealing gasket (3), the movable valve core (4) covers the air inlet (111).