CN217302481U - Sliding trigger switch and inflation structure for pressure reducing valve of liquid taking device - Google Patents

Abstract

The utility model provides a slip trigger switch for getting liquid ware relief pressure valve, including relief pressure valve main part, sliding bottom and gas cylinder valve, be provided with the valve thimble in the sliding bottom, but the relief pressure valve main part displacement ground cover is located on the sliding bottom, and relief pressure valve main part and sliding bottom's cooperation department is provided with the limit structure who restricts the relief pressure valve main part displacement, and sliding bottom and the sealed cooperation of gas cylinder valve, relief pressure valve main part are when sliding bottom's axial displacement, and the gas cylinder valve can be backed down to the valve thimble. Still provide an inflatable structure on this basis, still include the high-pressure gas cylinder, the high-pressure gas cylinder passes through gas cylinder valve and sliding base sealing connection. This slide trigger switch easy operation is swift, and the sharp-pointed sound that probably produces when can reducing the dismouting gas cylinder improves sealed life who fills up, promotes and uses experience.

Description

Sliding trigger switch and inflation structure for pressure reducing valve of liquid taking device

Technical Field

The utility model belongs to the technical field of aerify and get liquid to in particular to a slip trigger switch and gas filled structure for getting liquid ware relief pressure valve.

Background

Some of the currently available high-pressure gas cylinders use a valve connector with a top-opening self-sealing valve, and when the structure is matched with a counterpart (such as a pressure reducing valve or a valve switch), the following problems exist: the counter part is at the last moment of screwing up with valve structure, and counter part backs up the thimble of valve structure, because atmospheric pressure is very high, takes place the edge leakage easily between thimble and the sealed pad, can send a very harsh scream, and difficult the elimination seriously influences the use and experiences, and when putting through high-pressure gas cylinder for a long time in addition, high-pressure gas makes the valve connect easily and the sealing washer between the counter part inefficacy.

SUMMERY OF THE UTILITY MODEL

The device aims at the following problems existing in the use process of a high-pressure gas cylinder with a top-open type self-sealing valve: the sliding trigger switch and the inflating structure for the liquid taking device pressure reducing valve are used for solving the technical defect problems that a very harsh scream can be generated at the last tightening moment when the hand piece is matched with the high-pressure gas cylinder valve connector, the scream is difficult to eliminate, the use experience is seriously influenced, and when the high-pressure gas cylinder is connected for a long time, the sealing ring between the valve connector and the hand piece is easy to lose efficacy due to high-pressure gas.

According to the utility model discloses a first aspect provides a slip trigger switch for getting liquid ware relief pressure valve, including relief pressure valve main part, sliding bottom and gas cylinder valve, be provided with the valve thimble in the sliding bottom, but the relief pressure valve main part displacement ground cover is located on the sliding bottom, and relief pressure valve main part and sliding bottom's cooperation department is provided with the limit structure of restriction relief pressure valve main part displacement, and sliding bottom and the sealed cooperation of gas cylinder valve, relief pressure valve main part are when sliding bottom's axial displacement, and the gas cylinder valve can be backed up to the valve thimble. This slide trigger switch is because the cooperation with high-pressure gas cylinder valve and the action separation that triggers the gas cylinder valve, consequently is difficult for producing sharp-pointed detonation at the in-process of dismouting high-pressure gas cylinder to be favorable to improving the sealed life-span of filling up between sliding bottom and the gas cylinder valve, greatly promoted use experience.

In some specific embodiments, the pressure reducing valve further comprises a return spring, the bottom of the sliding base is provided with an axially outer edge, and the return spring is sleeved outside the sliding base and is arranged between the bottom of the pressure reducing valve main body and the axially outer edge. By virtue of this arrangement, automatic resetting of the trigger switch can be facilitated.

In some specific embodiments, the bottom of the pressure reducing valve body is provided with a cavity for accommodating the sliding base. By means of the arrangement, the pressure reducing valve main body can be sleeved on the sliding base, and the action of sliding triggering is realized.

In some specific embodiments, the limiting structure comprises a limiting pin and a limiting groove arranged on the outer surface of the sliding base, and the limiting pin penetrates through the surface of the cavity of the pressure reducing valve main body to be matched with the limiting groove. By means of the arrangement, on one hand, the displacement stroke of the pressure reducing valve main body is limited, and the pressure reducing valve main body can be prevented from being separated from the sliding base; on the other hand can also restrict the sliding base part and rotate along with the gas cylinder when changing the gas cylinder, the operation of dismouting gas cylinder of being convenient for.

In some specific embodiments, the sliding base is an annular hollow structure, the upper portion of the hollow structure is a through hole for the valve needle to pass through, and the lower portion of the hollow structure is a cavity matched with the cylinder valve. By virtue of this structure, the air outlet passage can be formed.

In some specific embodiments, at least one sealing ring is disposed at an interval in the middle of the outer surface of the valve needle, an air outlet hole is disposed through the valve needle, a notch is disposed at the matching position of the valve needle and the cylinder valve, and the notch is communicated with the air outlet hole. The structure of the valve ejector pin is used for setting an internal channel capable of communicating the cylinder valve and the pressure reducing valve main body, gas is prevented from leaking from a gap between the valve ejector pin and the sliding base, and the gas outlet hole is not blocked when the valve ejector pin is used for ejecting the cylinder valve.

In some embodiments, when the sliding base is in sealing fit with the valve of the gas cylinder, the lower part of the valve thimble contacts with the valve, and the upper part of the valve thimble extends out of the upper end face of the sliding base and is matched with the lower cavity of the pressure reducing valve main body. By means of the structure, the cylinder valve can be triggered downwards by utilizing the displacement control valve thimble of the pressure reducing valve main body.

In some specific embodiments, the bottom of the cavity is provided with a sealing gasket. Rely on this structure can realize the sealed when high-pressure gas cylinder and sliding bottom cooperate to because the valve switch on the high-pressure gas cylinder is in closing all the time under the normality, high-pressure gas only exists in when the sliding trigger switch is triggered to the effect of this sealed pad, sliding switch's easy operability can be at any time fast switch over switch, therefore sealed life-span of filling up is longer, difficult inefficacy.

According to the utility model discloses a second aspect provides an inflatable structure, include as above-mentioned slip trigger switch, still include high-pressure gas cylinder, high-pressure gas cylinder passes through gas cylinder valve and sliding base sealing connection. The inflation structure can directly control the opening or closing of the gas cylinder valve of the high-pressure gas cylinder through the sliding trigger switch, and the operation is simple and rapid.

In some specific embodiments, the gas cylinder further comprises an inflation bracket, and when a high-pressure gas cylinder provided with a sliding trigger switch is arranged on the inflation bracket, the pressure reducing valve main body pushes a valve thimble to push a gas cylinder valve open. By means of the structure of the inflatable support, the sliding trigger switch can be controlled without manual operation, and the opening of the gas cylinder valve can be realized only by placing the sliding trigger switch on the support.

Compared with the prior art, the utility model discloses a beneficial achievement lies in:

according to the sliding trigger switch for the pressure reducing valve of the liquid taking device, the pressure reducing valve main body is matched with the sliding base in a sleeved mode, the valve thimble inside the sliding base is driven to trigger the gas cylinder switch by the aid of movement of the pressure reducing valve main body, the sliding trigger switch is simple in structure, the high-pressure gas cylinder valve cannot be triggered in the process of assembling and disassembling the high-pressure gas cylinder by separating matching of the high-pressure gas cylinder valve from action of triggering the gas cylinder valve, and therefore sharp detonation is not prone to occurring; and through the outside slip trigger mode control valve thimble of relief pressure valve main part at sliding base trigger high-pressure gas cylinder valve, realize opening of gas cylinder valve and close fast, overall structure can improve the sealed life-span of filling up between sliding base and the gas cylinder valve, has greatly promoted use experience.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain the principles of the invention. Other embodiments and many of the intended advantages of embodiments will be readily appreciated as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding similar parts.

Fig. 1 a-1 b are schematic cross-sectional views illustrating a closed and triggered state of a sliding trigger switch for a pressure reducing valve of a liquid dispenser according to an embodiment of the present invention;

fig. 2 a-2 b are schematic diagrams of an inflatable structure according to an embodiment of the invention.

The meaning of each number in the figure: 100-a pressure reducing valve main body, 101-a limiting pin, 200-a sliding base, 201-an axial extension, 202-a limiting groove, 203-a sealing gasket, 300-a valve thimble, 301-an air outlet hole, 302-a sealing ring, 400-a return spring, 500-a gas cylinder valve, 600-a high-pressure gas cylinder, 700-an inflation support, 701-a front support and 702-a rear support.

Detailed Description

In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. In this regard, directional terminology, such as "top," "bottom," "left," "right," "up," "down," etc., is used with reference to the orientation of the figures being described. Because components of embodiments can be positioned in a number of different orientations, the directional terminology is used for purposes of illustration and is in no way limiting. It is to be understood that other embodiments may be utilized and logical changes may be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

The utility model provides a slide trigger switch for getting liquid ware relief pressure valve, figure 1 a-figure 1b are according to the utility model discloses a section structure schematic diagram that is used for getting sliding trigger switch of liquid ware relief pressure valve to close and trigger the state, as shown in figure 1a, this slide trigger switch includes relief pressure valve main part 100, sliding bottom 200, valve thimble 300 and reset spring 400, and the upper portion of relief pressure valve main part 100 is the pressure reducing structure, and it can adopt the structure of arbitrary relief pressure valve, and here is no longer repeated. The lower portion of the pressure reducing valve main body 100 is provided with a cavity, the cavity is sleeved on the outer wall of the upper portion of the sliding base 200, a sliding gap which is displaced along the axial direction relative to the sliding base 200 is reserved in the cavity, the pressure reducing valve main body 100 can slide on the outer wall of the sliding base 200 along the axial direction, the lower portion of the sliding base 200 is provided with an axial outer edge 201, and the reset spring 400 is sleeved on the outer surface of the sliding base 200 and compressed between the pressure reducing valve main body 100 and the axial outer edge 201 of the sliding base 200. Limiting structures are further arranged on the pressure reducing valve main body 100 and the sliding base 200 and used for preventing the pressure reducing valve main body 100 from falling off from the sliding base 200. The limiting structure specifically comprises a limiting groove 202 formed in the circumferential surface of the sliding base 200 along the axial direction and a limiting pin 101 penetrating through the cavity wall of the pressure reducing valve main body 100, in one embodiment, the limiting pin 101 is fastened to the outer wall of the pressure reducing valve main body 100 through a threaded hole formed in the pressure reducing valve main body 100, extends into the cavity inside the pressure reducing valve main body 100, and is matched with the limiting groove 202, so that the displacement stroke of the pressure reducing valve main body 100 is limited within the size range of the limiting groove 202, the pressure reducing valve main body 100 is prevented from falling off from the sliding base 200, and the gas cylinder valve is prevented from being damaged due to excessive displacement; simultaneously when dismouting gas cylinder, this limit structure can also restrict sliding bottom part and follow the gas cylinder and rotate, conveniently carries out the change of gas cylinder.

In some specific embodiments, the sliding base 200 is a hollow ring structure, the upper portion of the hollow ring structure is a through hole with a smaller inner diameter for the valve thimble 300 to pass through, the lower portion of the hollow ring structure is a cavity with a larger inner diameter for matching with the cylinder valve 500 on the gas cylinder 600, and the specific matching manner is generally set to be a threaded connection matching, for example, the valve structure of TR21-4 adopted by the high-pressure gas cylinder on the market at present, the head portion of the valve structure is provided with an external thread, and the cavity is correspondingly provided with an internal thread, and the two can realize quick connection and fastening through the threads. The bottom of the cavity is provided with a gasket 203 to keep the cylinder valve 500 sealed when it is mated with the sliding base 200.

In some embodiments, the valve pin 300 is disposed in the upper through hole of the hollow ring structure of the sliding base 200, and when the sliding base 200 is engaged with the cylinder valve 500, the valve pin 300 is lifted by the cylinder valve 500 and extends out of the upper end surface of the sliding base 200, and the cylinder valve 500 is not opened, so that the gasket 203 is not exposed to the gas pressure in the high pressure gas cylinder 600. At least one sealing ring 302, preferably two sealing rings 302 are disposed at the matching position of the outer wall of the valve needle 300 and the through hole, so as to ensure the sealing between the valve needle 300 and the through hole. An air outlet hole 301 is formed through the valve needle 300, and the air outlet hole 301 is communicated with a pressure reducing passage in the pressure reducing valve main body 100. The valve thimble 300 is provided with a notch at the bottom of the lower part of the air outlet hole 301 contacting with the cylinder valve 500, so that high-pressure air can enter the air outlet hole 301, and the influence of the air outlet hole 301 being blocked by the thimble of the cylinder valve 500 on air outlet is avoided. Although the notch is shown as a concave structure, in some other embodiments, the notch may be configured as an inclined surface or other structures, so long as the air outlet hole 301 is not blocked when the air outlet hole is matched with the thimble of the cylinder valve.

Fig. 1a is a schematic cross-sectional view illustrating a closed state of a slide trigger switch for a pressure reducing valve of a dispenser, in which, as shown in fig. 1a, a valve body 100 is lifted up by a return spring 400, a stopper pin 101 is positioned at an uppermost portion of a stopper groove 202, and at this time, a valve needle 300 is not acted by the pressure reducing valve body 100, so that a cylinder valve 500 is still closed. As can be seen from this state, when the sliding base 200 is engaged with the cylinder valve 500, the valve pin 300 cannot trigger the pin inside the cylinder valve 500, and therefore, the cylinder valve 500 is actually in the closed state in the entire process of assembling and disassembling the high-pressure cylinder, and therefore, there is no situation where the high-pressure gas generates a sharp pop sound due to the side leakage between the pin of the cylinder valve 500 and the gasket 203 at the last moment.

Fig. 1b is a schematic cross-sectional view illustrating an open state of a sliding trigger switch for a pressure reducing valve of a liquid dispenser, as shown in fig. 1b, when the pressure reducing valve body 100 is pressed downward by a force, the sliding trigger switch is displaced to a position where the stopper pin 101 is located at the lowest portion of the stopper groove 202, at this time, the valve needle 300 moves downward by an action force of the pressure reducing valve body 100 to push open the needle of the cylinder valve 500, and high-pressure gas in the high-pressure gas cylinder 600 enters a pressure reducing passage in the pressure reducing valve body 100 through the cylinder valve 500 and the air outlet 301 in the valve needle 300.

In the stage of matching with the gas cylinder, namely in the process of disassembling and assembling the gas cylinder, compared with the prior high-pressure gas cylinder when a gas cylinder valve is matched with a counterpart piece, the positions of an ejector pin and a sealing gasket of the gas cylinder valve are easy to generate side leakage and generate sharp detonation; when the high-pressure gas bottle is connected for a long time, the sealing is easy to lose efficacy under the action of high-pressure gas. The sliding trigger type switch structure adopted in the application separates the operations triggered by the detachable gas cylinder and the thimble, namely, the thimble of the valve 300 can not trigger the gas cylinder valve 500 when the gas cylinder is detached, the gas cylinder valve 500 of the high-pressure gas cylinder 600 always keeps a closed state, the switch mode is switched at any time through the sliding pressure reducing valve main body 100 after the assembly of the high-pressure gas cylinder 600 is completed, and the problems can be avoided or reduced. In addition, after the high-pressure gas cylinder is matched, when the high-pressure gas cylinder is used as a main switch of a gas source, the triggering mode is relatively simple and quick, and the use experience is improved.

According to a second aspect of the present invention, an inflatable structure is proposed, fig. 2 a-2 b show a schematic diagram of an inflatable structure according to an embodiment of the present invention, as shown in fig. 2a, the inflatable structure comprises a sliding trigger switch as shown in fig. 1 a-1 b, and further comprises an inflatable support 700, which comprises a front support 701, a rear support 702 and a bottom plate. The distance between the front holder 701 and the rear holder 702 is set according to the trigger stroke of the slide trigger switch so that the slide trigger switch is in an on state just as shown in fig. 1b when the slide trigger switch containing the high-pressure gas cylinder 700 is horizontally placed between the front holder 701 and the rear holder 702. Although the inflatable stand 700 is shown in a horizontal position, it should be appreciated that the inflatable stand 700 may be arranged vertically or inclined to achieve the same technical effects of the present invention. In some preferred embodiments, a limiting structure may be further disposed on the front bracket 701 and the rear bracket 702, so that the sliding trigger switch with the high-pressure gas cylinder 700 is not easy to fall off after being placed in place, for example, a groove is disposed at the front bracket 701 for the pressure reducing valve main body 100 to be inserted and matched; the rear bracket 702 is provided with a limiting bulge or an anti-slip structure, so that the high-pressure gas cylinder 600 is prevented from being popped up.

In a specific embodiment, as shown in fig. 2a, a slide trigger switch with a high pressure gas cylinder 600 is obliquely arranged between a front bracket 701 and a rear bracket 702, the pressure reducing valve main body 100 is pressed towards the slide base 200 by pressing the pressure reducing valve main body 600 downwards, the valve thimble 300 pushes the thimble on the upper portion of the gas cylinder valve 500, the high pressure gas in the high pressure gas cylinder 600 enters the pressure reducing valve through the gas cylinder valve 500 and the valve thimble 300, the pressure reducing valve can be connected with an inflation head through a gas pipe, and the inflation action is realized through the matching of the trigger switch on the inflation head and a liquid taking head. This aerify structure is fit for great gas cylinder and needs frequently to aerify the use scene of getting liquid operation at home or other fixed places, can need not manually to last to slide trigger switch through the setting of aerifing the support and push away to the trigger position, can also stabilize the high-pressure gas cylinder simultaneously and arrange in aerifing the support, promotes to use and experiences.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit and scope of the invention. In this way, if these modifications and changes are within the scope of the claims of the present invention and their equivalents, the present invention is also intended to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps than those listed in a claim. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims shall not be construed as limiting the scope.

Claims (10)

1. The utility model provides a slide trigger switch for getting liquid ware relief pressure valve which characterized in that, includes relief pressure valve main part, sliding bottom and gas cylinder valve, be provided with the valve thimble in the sliding bottom, the relief pressure valve main part cover is located with shifting sliding bottom is last, just the relief pressure valve main part with sliding bottom's cooperation department is provided with the restriction the limit structure of relief pressure valve main part displacement, sliding bottom with the sealed cooperation of gas cylinder valve, the relief pressure valve main part is in during sliding bottom's axial displacement, the valve thimble can be backed open the gas cylinder valve.

2. The sliding trigger switch of claim 1, further comprising a return spring, wherein the bottom of the sliding base is provided with an axially outer edge, and the return spring is sleeved outside the sliding base and is disposed between the bottom of the pressure reducing valve body and the axially outer edge.

3. The sliding trigger switch for a take-off pressure relief valve as in claim 1, wherein the bottom of the pressure relief valve body is provided with a cavity for receiving the sliding base.

4. The sliding trigger switch of claim 1, wherein the limiting structure comprises a limiting pin and a limiting groove disposed on an outer surface of the sliding base, and the limiting pin passes through a surface of the cavity of the pressure reducing valve body and is engaged with the limiting groove.

5. The sliding trigger switch of claim 1, wherein the sliding base is an annular hollow structure, the upper portion of the hollow structure is a through hole for the needle of the valve to pass through, and the lower portion of the hollow structure is a cavity engaged with the valve of the cylinder.

6. The sliding trigger switch according to claim 1, wherein at least one sealing ring is disposed at intervals on the outer surface of the valve needle, an air outlet hole is formed through the valve needle, and a notch is formed at a position where the valve needle is engaged with the cylinder valve and is connected to the air outlet hole.

7. The sliding trigger switch of claim 6, wherein when the sliding base is sealingly engaged with the valve of the gas cylinder, the lower portion of the valve pin contacts the valve, and the upper portion of the valve pin extends out of the upper end surface of the sliding base and engages the lower cavity of the pressure reducing valve body.

8. The sliding trigger switch for a pressure relief valve of a fluid dispenser as in claim 5, wherein a gasket is provided at the bottom of the chamber.

9. An inflation structure, comprising the sliding trigger switch according to any one of claims 1 to 8, and further comprising a high-pressure gas cylinder, wherein the high-pressure gas cylinder is connected with the sliding base in a sealing manner through the gas cylinder valve.

10. The structure of claim 9, further comprising an inflation bracket, wherein when the high-pressure gas cylinder provided with the sliding trigger switch is placed on the inflation bracket, the pressure reducing valve body pushes the valve needle to push the cylinder valve open.

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