CN221257784U - Breather valve and storage tank with same - Google Patents

Abstract

The utility model provides a breather valve, its includes the drain pan, install in the overhead guard at drain pan top, install in the inside valve of drain pan, upper and lower both ends wear to locate respectively on overhead guard and the valve first valve body, set up on the valve and wear to locate the second valve body on the first valve body, the top surface of valve is first mating surface, and the bottom position of second gas passage inner space is the second mating surface, and the valve is equipped with the inlet port that runs through downwards in first mating surface middle part to the valve is equipped with the venthole that runs through downwards in second mating surface middle part, first mating surface middle part still protruding is equipped with first snap ring, second mating surface middle part still protruding is equipped with the second snap ring, be equipped with first functional groove on the first valve body, be equipped with the second functional groove on the second valve body, under the action of gravity, first snap ring card is in first functional groove, second snap ring card is in the second functional groove. The storage tank comprises a tank body and a breather valve, wherein the breather valve is arranged on the tank body of the storage tank. The utility model effectively improves the sealing effect of the first valve body and the second valve body and reduces the volatilization of the medium in the storage tank.

Description

Breather valve and storage tank with same

Technical Field

The utility model relates to a pneumatic control valve, in particular to a breather valve and a storage tank with the breather valve.

Background

The storage tank is used for storing refined chemical substances such as acid and alkali, alcohol, gas and liquid, is widely applied to places such as storage enterprises and wharfs, and is used for maintaining the pressure of the storage tank to be flat, and the breather valve is arranged on the storage tank and is an important accessory for protecting the safety of the storage tank and is arranged at the top of the storage tank and used for automatically controlling the opening and closing of gas channels inside and outside the storage tank, maintaining the pressure balance of the storage tank and protecting the overpressure or the super vacuum of the storage tank. In the use process, when the pressure of the gas in the tank exceeds the allowable pressure value of the oil tank, the pressure valve of the breather valve is jacked up, and the mixed gas escapes from the tank, so that the pressure in the tank is not increased any more. When the vacuum degree of the gas in the tank exceeds the allowable vacuum degree of the storage tank, the vacuum valve is jacked up, and the sucked air maintains the pressure balance of the storage tank. The pressure is in a certain range, the storage tank does not breathe, and the breather valve reduces the evaporation loss of the medium to a certain extent.

However, when the air pressure in the storage tank is in a normal state, the pressure valve of the existing breather valve still has the conditions of serious medium evaporation and loss in the tank because of poor tightness of the pressure valve of the breather valve, and the breather valve brings trouble to enterprises.

Disclosure of utility model

Based on this, it is necessary to provide a breather valve in view of the deficiencies in the prior art.

The utility model provides a breather valve, its includes the drain pan, install in the overhead guard at drain pan top, install in the inside valve of drain pan, upper and lower both ends wear to locate respectively on overhead guard and the valve first valve body, set up on the valve and wear to locate the second valve body on the first valve body, the top surface of valve is first mating surface, the bottom position of second gas passage inner space is the second mating surface, the valve is equipped with the inlet port that runs through downwards in first mating surface to the valve is equipped with the venthole that runs through downwards in the second mating surface, first mating surface still protruding is equipped with first snap ring, second mating surface middle part still protruding is equipped with the second snap ring, be equipped with first functional groove on the first valve body, be equipped with the second functional groove on the second valve body, under gravity effect, first valve body seals the inlet port, first snap ring card is at first functional groove, the second valve body seals the venthole, second snap ring card is in the second functional groove.

In one embodiment, the thickness of the first snap ring gradually contracts from a direction away from the first mating surface, the space in the groove of the first functional groove corresponds to the first snap ring, and the space in the groove of the first functional groove gradually contracts inwards.

In one embodiment, the sealing device further comprises a first sealing ring, the cross section of the first sealing ring is bent in an inverted V shape, and the first sealing ring and the second sealing ring are installed in the first functional groove.

In one embodiment, the thickness of the second snap ring gradually contracts from a direction away from the second mating surface, and the space in the second functional groove corresponds to the second snap ring, and the space in the second functional groove gradually contracts inwards.

In one embodiment, the device further comprises a second sealing ring, the cross section of the second sealing ring is bent in an inverted V shape, and the second sealing ring is arranged in the second functional groove.

In one embodiment, the bottom shell comprises a bottom plate, a main body part, a connecting part and an introduction part, wherein the connecting part is connected with the bottom plate and the main body part, the main body part extends downwards from the top to form a containing groove, and the bottom shell is further provided with a through hole, and the through hole penetrates through the bottom plate and the connecting part and is communicated with the containing groove. The leading-in part is connected to the outer side surface of the main body part, and a first gas channel is arranged on the leading-in part.

In one embodiment, the valve is connected to the wall of the accommodating groove, the interior of the valve is hollow, and a second gas channel is formed, and the second gas channel is communicated with the first gas channel.

In one embodiment, the middle part of the inner side surface of the top cover is convexly provided with a clamping column, the bottom surface of the clamping column is provided with a first sliding groove extending inwards, the first valve body comprises a block main body, a first movable pin connected to the middle part of the top surface of the block main body, and a second movable pin connected to the middle part of the bottom surface of the block main body, the first movable pin and the second movable pin of the first valve body respectively extend into the first sliding groove and the air inlet hole, and the first sliding groove guides the first valve body.

In one embodiment, the second valve body comprises a sealing plate and a guide column vertically connected to the middle of the upper end face of the sealing plate, the first valve body is provided with a second chute extending inwards at the bottom of the second movable pin, the guide column of the second valve body extends into the second chute at the bottom of the second movable pin, and the second chute guides the second valve body.

The storage tank comprises a tank body and a breather valve, wherein the breather valve is arranged on the tank body of the storage tank.

The breather valve has the beneficial effects that: through set up first snap ring and second snap ring respectively at the first fitting surface of valve, second fitting surface, set up first functional groove and second functional groove respectively on first valve body and the second valve body, when the inside and outside atmospheric pressure of storage tank reaches the balance, first snap ring card is in first functional groove, and the second snap ring card is in the second functional groove, effectively improves the sealed effect of first valve body and second valve body, reduces. The medium in the storage tank volatilizes, and the practicality is strong.

Drawings

FIG. 1 is a schematic diagram of the structure of a breather valve of the present utility model;

FIG. 2 is a cross-sectional view of the respiratory valve shown in FIG. 1;

fig. 3 is an enlarged view of a portion a in fig. 2.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 3, the present utility model provides a breather valve, which is installed on a tank body of a storage tank, and includes a bottom shell 10, a top cover 20 installed at the top of the bottom shell 10, a valve 50 installed inside the bottom shell 10, a first valve body 30 with upper and lower ends respectively penetrating through the top cover 20 and the valve 50, and a second valve body 40 installed on the valve 50 and penetrating through the first valve body 30, wherein the first valve body 30 and the second valve body 40 can be adjusted in position according to the air pressure variation in the storage tank, so that the breather valve is in an air intake or air exhaling state.

The bottom shell 10 comprises a bottom plate 11, a main body 12, a connecting part 13 and an introduction part 14, wherein the connecting part 13 connects the bottom plate 11 and the main body 12, the main body 12 extends downwards from the top to form a containing groove 121, the bottom shell 10 is further provided with a through hole 15, and the through hole 15 penetrates through the bottom plate 11 and the connecting part 13 and is communicated with the containing groove 121. The introduction portion 14 is connected to the outer surface of the main body 12, and a first gas passage 141 is provided in the introduction portion 14.

The valve 50 is connected to the groove wall of the accommodating groove 121, the interior of the valve 50 is hollow, a second gas channel 51 is formed, the second gas channel 51 is communicated with the first gas channel 141, the top surface of the valve 50 is a first matching surface 52, the bottom position of the inner space of the second gas channel 51 is a second matching surface 53, an air inlet 54 penetrating downwards is formed in the middle of the first matching surface 52 of the valve 50, an air outlet 55 penetrating downwards is formed in the middle of the second matching surface 53 of the valve 50, and the air outlet 55 and the air inlet 54 are arranged oppositely in the vertical direction.

The middle part of the first mating surface 52 is further provided with a first clamping ring 56 in a protruding manner, the first clamping ring 56 is arranged on the outer side of the orifice of the air inlet 54 in a surrounding manner, and the thickness of the first clamping ring 56 gradually contracts from the direction away from the first mating surface 52. The middle part of the second matching surface 53 is further provided with a second clamping ring 57 in a protruding mode, the second clamping ring 57 is arranged on the outer side of the orifice of the air outlet 55 in a surrounding mode, and the thickness of the second clamping ring 57 gradually contracts from the direction away from the second matching surface 53.

The middle part of the inner side surface of the top cover 20 is convexly provided with a clamping column 21, and the bottom surface of the clamping column 21 is provided with a first sliding groove 211 extending inwards.

The first valve body 30 comprises a block main body 31, a first movable pin 32 connected to the middle of the top surface of the block main body 31, and a second movable pin 33 connected to the middle of the bottom surface of the block main body 31, wherein the bottom of the first valve body 30 is provided with a second sliding groove 34 extending inwards, the shapes of the first movable pin 32 and the second movable pin 33 are in columnar arrangement, the outer diameter of the first movable pin 32 is matched with the groove width of the first sliding groove 211, first functional grooves 35 distributed around the central axis of the block main body 31 are arranged at the bottom of the block main body 31, the groove space of the first functional grooves 35 corresponds to the first clamping ring 56, and the groove space of the first functional grooves 35 gradually contracts inwards.

The second valve body 40 includes a sealing plate 41 and a guide post 42 vertically connected to the middle of the upper end surface of the sealing plate 41, the outer diameter of the guide post 42 is matched with the groove width of the second sliding groove 34, the bottom of the sealing plate 41 is provided with second functional slots 411 distributed around the central axis of the sealing plate 41, the space in the second functional slots 411 corresponds to the second clamping ring 57, and the space in the second functional slots 411 gradually contracts inwards.

The utility model further comprises a first sealing ring 60 and a second sealing ring 70, the cross sections of the first sealing ring 60 and the second sealing ring 70 are bent in an inverted V shape, and the first sealing ring 60 and the second sealing ring 70 are respectively arranged in the first functional groove 35 and the second functional groove 411 through glue.

When the valve is assembled, the first movable pin 32 and the second movable pin 33 of the first valve body 30 respectively extend into the first sliding groove 211 and the air inlet hole 54, the first sliding groove 211 guides the first valve body 30 to be capable of being adjusted only in the vertical direction (namely, shifting in the gravity direction), the guide column 42 of the second valve body 40 extends into the second sliding groove 34 at the bottom of the second movable pin 33, and the second sliding groove 34 guides the second valve body 40 to be capable of being adjusted only in the vertical direction (namely, shifting in the gravity direction). Under the action of gravity, the block main body 31 of the first valve body 30 seals the air inlet hole 54, the first clamping ring 56 is clamped in the first functional groove 35 and is attached to the first sealing ring 60, the sealing plate 41 of the second valve body 40 seals the air outlet hole 55, and the second clamping ring 57 is clamped in the second functional groove 411 and is attached to the second sealing ring 70.

In the use process, when the internal air pressure of the storage tank is too high, the internal air pressure of the storage tank pushes the second valve body 40 upwards, so that the through hole 15, the accommodating groove 121, the air outlet hole 55, the second air channel 51 and the first air channel 141 are sequentially communicated, and the through hole 15, the accommodating groove 121, the air outlet hole 55, the second air channel 51 and the first air channel 141 which are passed through by the storage tank are exhausted outwards for pressure reduction; conversely, when the internal air pressure of the storage tank is too small, the external air pressure pushes the first valve body 30 upwards, so that the through hole 15, the accommodating groove 121, the air inlet hole 54, the second air channel 51 and the first air channel 141 are sequentially communicated, and the storage tank introduces external air through the through hole 15, the accommodating groove 121, the air inlet hole 54, the second air channel 51 and the first air channel 141 which are sequentially communicated, so that the balance of internal and external air pressures is maintained.

The breather valve has the beneficial effects that: through setting up first snap ring 56 and second snap ring 57 respectively at the first mating surface 52 of valve 50, second mating surface 53, set up first function groove 35 and second function groove 411 respectively on first valve body 30 and the second valve body 40, when the inside and outside atmospheric pressure of storage tank reaches the equilibrium, first snap ring 56 card is in first function groove 35, and second snap ring 57 card is in second function groove 411, effectively improves the sealed effect of first valve body 30 and second valve body 40, reduces. The medium in the storage tank volatilizes, and the practicality is strong.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. The utility model provides a breather valve, its characterized in that, including drain pan, install in the overhead guard at drain pan top, install in the inside valve of drain pan, upper and lower both ends wear to locate respectively on overhead guard and the valve first valve body, set up on the valve and wear to locate the second valve body on the first valve body, the top surface of valve is first mating surface, and the bottom position of second gas passage inner space is the second mating surface, and the valve is equipped with the inlet port that runs through downwards in first mating surface to the valve is equipped with the venthole that runs through downwards in the second mating surface, first mating surface still protruding is equipped with first snap ring, the second mating surface still protruding is equipped with the second snap ring, be equipped with first functional groove on the first valve body, be equipped with the second functional groove on the second valve body, under the action of gravity, first valve body seals the inlet port, first snap ring card is at first functional groove, the second valve body seals the venthole, and second snap ring card is in the second functional groove.

2. The breather valve of claim 1, wherein the thickness of the first snap ring gradually contracts from a direction away from the first mating surface, and the space in the first functional groove corresponds to the first snap ring, and the space in the first functional groove gradually contracts inward.

3. The breather valve of claim 2, further comprising a first seal ring having an inverted V-shaped cross-section, the first seal ring and the second seal ring being mounted in the first functional groove.

4. The breather valve of claim 1, wherein the thickness of the second snap ring gradually contracts from a direction away from the second mating surface, and the space in the second functional groove corresponds to the second snap ring, and the space in the second functional groove gradually contracts inward.

5. The breather valve of claim 4, further comprising a second seal ring having an inverted V-shaped bend in cross-section, the second seal ring being mounted in the second functional groove.

6. The breather valve according to claim 1, wherein the bottom case includes a bottom plate, a main body portion, a connecting portion connecting the bottom plate and the main body portion, and a receiving groove extending downward from a top of the main body portion, the bottom case further being provided with a through hole penetrating the bottom plate and the connecting portion and communicating with the receiving groove; the leading-in part is connected to the outer side surface of the main body part, and a first gas channel is arranged on the leading-in part.

7. The breather valve of claim 6, wherein the valve is connected to a wall of the receiving tank, the valve being hollow in the interior thereof, forming a second gas passage, the second gas passage being in communication with the first gas passage.

8. The breather valve of claim 1, wherein the middle part of the inner side surface of the top cover is convexly provided with a clamping column, the bottom surface of the clamping column is provided with a first chute extending inwards, the first valve body comprises a block main body, a first movable pin connected to the middle part of the top surface of the block main body, and a second movable pin connected to the middle part of the bottom surface of the block main body, the first movable pin and the second movable pin of the first valve body respectively extend into the first chute and the air inlet hole, and the first chute guides the first valve body.

9. The breather valve of claim 8, wherein the second valve body comprises a sealing plate and a guide post vertically connected to the middle of the upper end surface of the sealing plate, the first valve body is provided with a second chute extending inwards at the bottom of the second movable pin, the guide post of the second valve body extends into the second chute at the bottom of the second movable pin, and the second chute guides the second valve body.

10. A tank comprising a tank body and a breather valve according to any one of claims 1 to 9, said breather valve being mounted to the tank body of the tank.