CN220102476U

CN220102476U - Self-adjusting air buffer

Info

Publication number: CN220102476U
Application number: CN202321407644.3U
Authority: CN
Inventors: 柯静; 唐加名
Original assignee: Hyou Shanghai Intelligent Technology Co ltd
Current assignee: Hyou Shanghai Intelligent Technology Co ltd
Priority date: 2023-06-05
Filing date: 2023-06-05
Publication date: 2023-11-28
Anticipated expiration: 2033-06-05

Abstract

The utility model discloses a self-adjusting air buffer, which comprises a tank body, a tank cover and a respirator, wherein a self-adjusting shaft is arranged in the respirator, extends into a buffer cavity and is vertically connected with a diaphragm, the periphery side of the diaphragm is clamped between the tank body and the tank cover to divide the buffer into an air cavity and a liquid cavity, and the upper part of the self-adjusting shaft is provided with a ventilation groove; the respirator is provided with the air inlet to set gradually first sealing washer, first slot, second sealing washer, second slot and third sealing washer along the axial, first sealing washer is close to the air inlet, and first slot passes through the air vent intercommunication air cavity, and the second slot passes through the exhaust hole intercommunication outside, wherein first sealing washer second sealing washer third sealing washer first slot with the second slot is less than in axial length at axial length of ventilation groove. The air buffer provided by the utility model can automatically supplement air or exhaust air based on pipeline pressure fluctuation, and is convenient to operate.

Description

Self-adjusting air buffer

Technical Field

The utility model relates to the technical field of air buffers, in particular to a self-adjusting air buffer.

Background

As shown in fig. 1, most of the common air buffers on the market are that a buffer cavity is divided into two independent spaces, namely an air cavity 901 and a liquid cavity 902 directly through a diaphragm 90, the air cavity 901 is inflated through an inflation switch valve 91, and the liquid cavity 902 is connected to a tee joint of a pipeline through an interface 903 at the bottom to induce hydraulic pressure. Typically, the inflation pressure in the air chamber 901 is 0.6 to 0.8 times the hydraulic pressure according to an empirical value, but the hydraulic pressure varies in many cases, and thus the hydraulic pressure value is typically an average value of the hydraulic pressure in most cases, however, the inflation is performed when the damper is not attached to the pipe, which means that the air chamber 901 is pressed to the maximum volume and cannot expand any further.

Currently, conventional air bumpers have the following drawbacks:

1. the need for pre-inflation: when the hydraulic pressure changes, the hydraulic pressure needs to be manually inflated or exhausted, so that the initial air pressure value is changed, the inflation pressure=0.6-0.8 times of the hydraulic pressure is maintained, and the operation is troublesome;

2. the air cavity 901 can reach an equilibrium state after volume shrinkage only when the hydraulic pressure is higher than the initial inflation, so that a buffering effect is realized, and when the hydraulic pressure is lower than the initial inflation, the air cavity 901 can not expand further after expanding to the initial air pressure due to the movement of the diaphragm 9, so that the equilibrium state can not be reached;

3. the air pressure change is realized by means of the contraction or expansion of the air cavity, and a larger air cavity 901 is required, so that the whole air buffer has larger volume and is inconvenient to use.

Disclosure of Invention

The utility model has the advantages that the self-adjusting air buffer is provided, when the hydraulic pressure is changed, the diaphragm drives the self-adjusting shaft to automatically move up and down based on the difference of the pressure of the air cavity and the pressure of the liquid cavity, so that the air cavity can be automatically supplemented with air or automatically discharged through the air outlet, the operation is very convenient, meanwhile, the air cavity does not need a particularly large space, the volume of the air buffer can be reduced to a certain extent, in addition, when the air cavity is discharged, the air buffer is not continuously discharged, but the air buffer is automatically adjusted based on the change of the pressure values of the air cavity and the liquid cavity, so that the total air consumption is very little, and resources can be saved.

One advantage of the present utility model is that it provides a self-adjusting air damper in which the stiffener not only improves the structural strength of the tank itself, but also serves to limit the self-adjusting shaft, preventing the self-adjusting shaft from backing out of the respirator and causing seal failure, thereby improving the operational reliability of the self-adjusting air damper.

To achieve at least one of the above advantages, the present utility model provides a self-adjusting air buffer, comprising a tank body and a tank cover which are connected to each other, and a buffer cavity is formed by wrapping the tank body and the tank cover, wherein a breather is arranged at one end of the tank cover far away from the tank body, a self-adjusting shaft is arranged in the breather along a direction perpendicular to the tank cover, the self-adjusting shaft extends into the buffer cavity, a diaphragm is vertically connected at one end close to the tank body, and a ventilation groove extending along an axial direction is arranged at one end close to the tank cover, wherein the peripheral side of the diaphragm is clamped between the tank body and the tank cover, and the buffer cavity is divided into an air cavity and a liquid cavity, wherein the liquid cavity is close to the tank body, and the air cavity is close to the tank cover;

the respirator is kept away from the one end of cover is provided with the air inlet for connect outside compressed air, set gradually along the axial in the respirator and be used for the cover to establish sealedly first sealing washer, second sealing washer and the third sealing washer of self-interacting axle, and in first sealing washer with be provided with first slot between the second sealing washer, and in the second sealing washer with be provided with the second slot between the third sealing washer, wherein first sealing washer is close to the air inlet, first slot passes through the air vent intercommunication the air cavity, the second slot passes through the exhaust hole intercommunication outside for the exhaust, wherein first sealing washer second sealing washer third sealing washer first slot with the second slot is less than in axial length in the ventilation groove.

According to an embodiment of the utility model, the self-adjusting shaft is further provided with a gas end pressure plate and a liquid end pressure plate on two sides of the diaphragm respectively, and the diaphragm is clamped between the gas end pressure plate and the liquid end pressure plate.

According to one embodiment of the utility model, the opposite sides of the liquid end pressing plate and the gas end pressing plate are provided with a horizontal part and inclined parts symmetrically arranged at two sides of the horizontal part, wherein the inclined parts gradually incline from one end to the other end of the horizontal part towards one side close to the tank cover.

According to an embodiment of the present utility model, an arc transition is formed between the periphery side of the liquid end pressing plate and the inclined portion, and the arc transition is used for supporting the diaphragm.

According to one embodiment of the utility model, the top of the liquid end pressing plate is provided with a thread groove, and the bottom of the self-adjusting shaft is provided with a stud matched with the thread groove.

According to an embodiment of the utility model, an arc-shaped protruding structure is arranged at the bottom of the liquid end pressing plate, the top end of the arc-shaped protruding structure is opposite to the interface of the tank body, a reinforcing rib is arranged in the tank body in the circumferential direction of the interface, extends along the axial direction, and an arc-shaped transition part matched with the arc-shaped protruding structure is arranged near the top of the tank cover.

According to an embodiment of the utility model, the plurality of ventilation grooves are distributed uniformly along the circumference of the self-adjusting shaft.

According to an embodiment of the present utility model, the ventilation groove is a rectangular groove or an arc groove.

According to one embodiment of the utility model, the tank body and the tank cover are connected through a hoop or a bolt.

According to an embodiment of the present utility model, the vent hole is a straight hole, and the radial thickness of the first groove is greater than the radial thickness of the second groove.

These and other objects, features and advantages of the present utility model will become more fully apparent from the following detailed description.

Drawings

Fig. 1 shows a schematic cross-sectional structure of an air damper in the prior art.

FIG. 2 is a schematic diagram showing a cross-sectional front view of a self-adjusting air damper in accordance with a preferred embodiment of the present utility model.

Figure 3 shows a schematic cross-sectional view of a respirator of the present utility model.

Fig. 4 shows a schematic partial cross-sectional view of a self-adjusting shaft according to the utility model.

Figure 5 shows a schematic cross-sectional view of the self-adjusting shaft in the vent slot section of the present utility model.

FIG. 6 is a schematic diagram showing a comparison of self-adjusting air damper inflation and equilibrium conditions in accordance with the present utility model.

FIG. 7 is a schematic diagram showing a comparison of self-adjusting air buffer balance and exhaust conditions in accordance with the present utility model.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be appreciated by those skilled in the art that in the disclosure of the present specification, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, the above terms should not be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Referring to fig. 2 to 7, a self-adjusting air damper according to a preferred embodiment of the present utility model will be described in detail below, wherein the self-adjusting air damper comprises a can body 20 and a can lid 10 connected to each other, a buffer chamber is formed by the can body 20 and the can lid 10 being wrapped, wherein a breather 30 is provided at an end of the can lid 10 remote from the can body 20, wherein a self-adjusting shaft 40 is provided in the breather 30 in a direction perpendicular to the can lid 10, i.e., in a vertical direction, wherein the self-adjusting shaft 40 extends into the buffer chamber, and a diaphragm 50 is vertically connected at an end near the can body 20, and at the same time, a vent groove 401 extending in an axial direction is provided at an end of the self-adjusting shaft 40 near the can lid 10, wherein an outer circumferential side of the diaphragm 50 is interposed between the can body 20 and the can lid 10, thereby dividing the buffer chamber into an air chamber 101 and a liquid chamber 102, wherein the liquid chamber 102 is near the can body 20, and the liquid chamber 101 is near the can lid 10;

the respirator 30 is provided with an air inlet 301 at one end far away from the tank cover 10, and is used for receiving external compressed air, meanwhile, a first sealing ring 31, a second sealing ring 32 and a third sealing ring 33 for sleeving and sealing the self-adjusting shaft 40 are sequentially arranged in the respirator 30 along the axial direction, a first groove 302 is arranged between the first sealing ring 31 and the second sealing ring 32, a second groove 303 is arranged between the second sealing ring 32 and the third sealing ring 33, the first sealing ring 31 is close to the air inlet 301, the first groove 302 is communicated with the air cavity 101 through an air vent 304, the second groove 303 is communicated with the outside through an air vent 305, and is used for exhausting, wherein the thicknesses of the first sealing ring 31, the second sealing ring 32, the third sealing ring 33, the first groove 302 and the second groove 303 along the axial direction are all smaller than the axial length of the ventilation groove 401.

With reference to fig. 6 and 7, the specific working process and principle are as follows:

in an inflated state, when the liquid cavity 102 is gradually filled with liquid, the diaphragm 50 and the self-adjusting shaft 40 are pushed to move upwards by the liquid pressure, the ventilation groove 401 on the self-adjusting shaft 40 passes over the first sealing ring 31, and at this time, external compressed air sequentially passes through the air inlet 301, the ventilation groove 401, the first groove 302 and the ventilation hole 304 to enter the air cavity 101;

the pressure in the air chamber 101 gradually rises and is greater than the pressure in the liquid chamber 102, and then the diaphragm 50 and the self-adjusting shaft 40 move downwards until the first sealing ring 31 and the self-adjusting shaft 40 form a seal, at this time, compressed air does not enter the air chamber 101 any more, and meanwhile, the pressure in the air chamber 101 is equal to the pressure in the liquid chamber 102, so that the balance state is automatically achieved;

in the exhaust state, when pressure fluctuation occurs in the pipeline, the pressure of the liquid cavity 102 is reduced, the diaphragm 50 and the self-adjusting shaft 40 continue to move downwards until the ventilation groove 401 passes over the second sealing ring 32, the first groove 302 and the second groove 303 are communicated through the ventilation groove 401, and under the sealing action of the first sealing ring 31, the gas in the air cavity 101 is sequentially discharged to the outside through the ventilation hole 304, the first groove 302, the second groove 303 and the exhaust hole 305, so that automatic air leakage is performed;

when the pressure in the air chamber 101 is reduced after the air is exhausted, the diaphragm 50 and the self-adjusting shaft 40 move upwards again under the action of hydraulic pressure, and return to the equilibrium state again to play a role of buffering.

Conversely, when pressure fluctuation occurs in the pipeline, the diaphragm 50 and the self-adjusting shaft 40 move upwards until the ventilation groove 401 passes over the first sealing ring 31, and external compressed air enters the air cavity 101 again to be inflated, so as to resist the rising hydraulic pressure, and finally, the pressure is automatically adjusted to be in an equilibrium state, thereby playing a role of automatic buffering.

In one embodiment, the self-adjusting shaft 40 is further provided with a gas end pressing plate 41 and a liquid end pressing plate 42 at both sides of the diaphragm 50, respectively, wherein the diaphragm 50 is clamped between the gas end pressing plate 41 and the liquid end pressing plate 42, so that the diaphragm 50 can be effectively stabilized and protected, and the working reliability of the air buffer is improved.

Further preferably, the opposite sides of the liquid end pressure plate 41 and the gas end pressure plate 42 are provided with a horizontal portion 411 and inclined portions 412 symmetrically provided at both sides of the horizontal portion 411, wherein the inclined portions 412 gradually extend from one end to the other end of the horizontal portion 411 toward a side close to the can lid 10, so that the fastening effect of the diaphragm 50 can be improved by the horizontal portion 411, while the contact area of the liquid end pressure plate 42, the gas end pressure plate 41 and the diaphragm 50 can be increased by the inclined portions 412, further stabilizing and protecting the diaphragm 50.

Further preferably, a circular arc transition is formed between the periphery of the liquid end pressing plate 42 and the inclined portion 412, so as to support the diaphragm 50 and avoid damage to the diaphragm 50 during movement.

It is further preferred that the top of the liquid end pressure plate 42 is provided with a screw groove 402, and at the same time, the bottom of the self-adjusting shaft 40 is provided with a stud 43 cooperating with the screw groove 402, so as to facilitate rapid assembly between the self-adjusting shaft 40, the gas end pressure plate 41 and the liquid end pressure plate 42, thereby rapidly clamping and fixing the diaphragm 50.

Further preferably, the bottom of the liquid end pressing plate 42 is provided with an arc-shaped protruding structure 421, wherein the top end of the arc-shaped protruding structure 421 is opposite to the port 201 of the can body 20, meanwhile, a reinforcing rib 21 is disposed in the can body 20 in the circumferential direction of the port 201, the reinforcing rib 21 extends along the axial direction, and an arc-shaped transition portion 211 matched with the arc-shaped protruding structure 421 is disposed near the top of the can cover 10, so that the structural strength of the can body 20 can be improved through the reinforcing rib 21, and the effect of limiting the liquid end pressing plate 42, namely limiting the self-adjusting shaft 40, can be achieved through the reinforcing rib 21, so that the phenomenon that the downward movement distance of the self-adjusting shaft 40 is too large to be separated from the respirator 30, and the failure of the air buffer is caused.

In one embodiment, referring to fig. 4 and 5, the ventilation slots 401 may be provided in plurality, and the ventilation slots 401 may be uniformly distributed along the circumference of the self-adjusting shaft 40, so that ventilation efficiency may be improved.

Further preferably, the ventilation groove 401 is a rectangular groove or an arc groove, wherein when the ventilation groove 401 is an arc groove, ventilation efficiency can be improved through an arc bottom area in ventilation, slow sealing of the self-adjusting shaft 40 is achieved through inclined areas on two sides, and in addition, the structural strength of the self-adjusting shaft 40 can be ensured as much as possible through the design mode of the arc groove.

In one embodiment, the tank body 20 and the tank cover 10 are connected through a hoop 11 or a bolt.

In one embodiment, the vent 304 is a straight hole, and the radial thickness of the first groove 302 is greater than the radial thickness of the second groove 303, so that, when inflated, external compressed air can directly enter the air chamber 101 through a predetermined channel without being discharged through the second groove 303 and the vent hole 305, and at the same time, the design is further capable of making the structure of the respirator 30 simpler, easy to manufacture and form, and easy to maintain.

The terms "first, second, and third" in the present utility model are used for descriptive purposes only, do not denote any order, and are not to be construed as indicating or implying relative importance, and these terms are to be construed as names.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present utility model have been fully and effectively realized. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.

Claims

1. The self-adjusting air buffer comprises a tank body and a tank cover which are connected with each other, and a buffer cavity is formed by wrapping the tank body and the tank cover, and is characterized in that one end of the tank cover, which is far away from the tank body, is provided with a respirator, a self-adjusting shaft is arranged in the respirator along the direction perpendicular to the tank cover, the self-adjusting shaft extends into the buffer cavity, a diaphragm is vertically connected to one end, which is close to the tank body, and a ventilation groove which extends along the axial direction is arranged at one end, which is close to the tank cover, wherein the peripheral side of the diaphragm is clamped between the tank body and the tank cover, so that the buffer cavity is divided into an air cavity and a liquid cavity, the liquid cavity is close to the tank body, and the air cavity is close to the tank cover;

2. The self-adjusting air damper of claim 1, wherein the self-adjusting shaft is further provided with a gas end platen and a liquid end platen, respectively, on both sides of the diaphragm, the diaphragm being clamped between the gas end platen and the liquid end platen.

3. The self-adjusting air damper of claim 2, wherein opposite sides of the liquid end pressure plate and the gas end pressure plate are provided with a horizontal portion and inclined portions symmetrically disposed on both sides of the horizontal portion, wherein the inclined portions gradually extend obliquely from one end to the other end of the horizontal portion toward a side closer to the can lid.

4. A self-adjusting air damper as defined in claim 3 wherein a circular arc transition is provided between the peripheral side of said liquid end pressure plate and said inclined portion for supporting said diaphragm.

5. The self-adjusting air damper of any one of claims 2 to 4, wherein the top of the liquid end pressure plate is provided with a threaded groove and the bottom of the self-adjusting shaft is provided with a stud that mates with the threaded groove.

6. The self-adjusting air damper of claim 5, wherein the bottom of the liquid end pressure plate is provided with an arcuate raised structure, wherein the top end of the arcuate raised structure is opposite the interface of the tank, wherein the tank is provided with a stiffener extending axially in the circumferential direction of the interface, and wherein an arcuate transition portion is provided adjacent the top of the tank cover that mates with the arcuate raised structure.

7. The self-adjusting air damper of claim 1, wherein the plurality of vent grooves are uniformly distributed along the circumference of the self-adjusting shaft.

8. The self-adjusting air damper of claim 7, wherein the vent slot is a rectangular slot or an arcuate slot.

9. The self-adjusting air damper of claim 1, wherein the canister and the canister cover are connected by a clamp or a bolt.

10. The self-adjusting air damper of claim 1, wherein the vent holes are straight holes and the radial thickness of the first groove is greater than the radial thickness of the second groove.