CN108825802B

CN108825802B - Freon gas cylinder valve

Info

Publication number: CN108825802B
Application number: CN201810563174.7A
Authority: CN
Inventors: 陈巅; 杨俊�; 华明翔; 何云庆; 王锡均; 华锡荣
Original assignee: ZHEJIANG ORIENTX FIRE SAFETY EQUIPMENT CO Ltd
Current assignee: ZHEJIANG ORIENTX FIRE SAFETY EQUIPMENT CO Ltd
Priority date: 2018-06-04
Filing date: 2018-06-04
Publication date: 2020-02-21
Anticipated expiration: 2038-06-04
Also published as: CN108825802A

Abstract

The invention discloses a Freon gas cylinder valve which comprises a valve body and a valve rod, wherein a flow channel is arranged in the valve body, a sealing gasket is sleeved at the middle part of the valve rod, a valve hole matched with the sealing gasket is arranged at the middle part of the flow channel, an outlet communicated with the upper part of the flow channel and an inlet communicated with the lower part of the flow channel are arranged on the valve body, a spring seat is arranged in the flow channel, a spring for pushing the valve rod to be close to the valve hole is arranged on the spring seat, a through hole is arranged on the spring seat, a valve plate in rotary connection is arranged in the through hole, and a sliding. The invention aims to provide a Freon gas cylinder valve for reducing Freon leakage.

Description

Freon gas cylinder valve

Technical Field

The invention belongs to the field of Freon storage, and particularly relates to a Freon gas cylinder valve.

Background

At present, freon is usually stored in a special gas cylinder or a gas tank through high pressure, and a valve is usually arranged and is operated to be opened or closed by a handle. Chinese patent publication No. CN106678441A discloses a valve structure of a low-temperature fire extinguisher, which comprises a valve body; the valve body flow passage is arranged in the valve body and comprises a main flow passage penetrating through the upper end and the lower end of the valve body and a valve body outlet arranged on the outer side surface of the valve body and communicated with the main flow passage, the lower port of the main flow passage forms a valve body inlet, and the main flow passage comprises a conical valve hole with the inner diameter gradually reduced from bottom to top; and the valve core is used for controlling the on-off of the valve body flow passage, the valve core comprises a valve rod inserted in the main flow passage, an upper valve rod sealing ring arranged on the valve rod and in sealing connection with the main flow passage, and a lower valve rod sealing ring arranged on the valve rod and in sealing connection with the conical valve hole, and the valve body outlet is positioned between the upper valve rod sealing ring and the lower valve rod sealing ring. When the valve is opened, the freon in the gas cylinder or the gas tank can flow out through the flow passage of the valve body. Although the valve rod and the handle can be positioned through safety, under extreme conditions of severe vibration and the like, the situation that the valve core is loosened to cause poor sealing can occur, and the Freon leaks.

Disclosure of Invention

The invention provides a Freon gas cylinder valve for reducing Freon leakage in order to overcome the defects in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a freon gas cylinder valve, includes valve body and valve rod, be equipped with the runner in the valve body, the middle part cover of valve rod is equipped with sealed the pad, the runner middle part is equipped with sealed complex valve opening, be equipped with on the valve body with the export of runner upper portion intercommunication and with the import of runner lower part intercommunication, be equipped with the spring holder in the runner, be equipped with the spring that promotes the valve rod and be close to the valve opening on the spring holder, be equipped with the through-hole on the spring holder, be equipped with the valve plate of rotation connection in the through-hole, be equipped with the slider of opening the. The valve is fixed on the Freon gas cylinder, when the valve rod moves downwards, the sealing gasket is separated from the matched valve hole, when the valve rod moves downwards to be contacted with the sliding block, the sliding block is driven to move downwards to enable the valve plate to rotate to open the through hole, the outlet at the upper part of the flow passage is communicated with the inlet at the lower part of the flow passage, and Freon in the gas cylinder enters the flow passage of the valve body and flows out of the valve body from the outlet. When receiving violent vibrations, although the valve rod can take place slight displacement, because the valve plate keeps closed state always, consequently freon can not follow the export blowout, can effectively prevent freon leakage, improves the valve security.

Preferably, the middle part of the valve rod is provided with an upper positioning disc and a lower positioning disc which are arranged in parallel, and a sealing gasket positioning groove for accommodating a sealing gasket is formed between the upper positioning disc and the lower positioning disc. Therefore, the sealing gasket can be stably positioned on the valve rod, and the sliding of the sealing gasket relative to the valve rod is avoided.

Preferably, the outer edge of one end, close to the valve hole, of the sealing gasket is provided with a sealing conical surface, and the sealing conical surface is in sealing fit with the valve hole. The sealing conical surface has better centering performance, and realizes good sealing matching effect with the valve hole.

Preferably, the edge of the upper surface of the upper positioning plate is provided with a guide conical surface with a small upper part and a large lower part, and the guide conical surface is in smooth transition with the outer surface of the valve rod. Therefore, the sealing gasket is sleeved on the valve rod during installation, and the guiding conical surface guides the sealing gasket to enter between the upper positioning plate and the lower positioning plate.

Preferably, the spring seat is provided with a positioning hole which is axially consistent with the flow passage, and the valve rod is in sliding fit with the positioning hole. The valve rod is arranged on the positioning hole and positioned through the positioning hole, the valve rod slides and is guided by the positioning hole, the accuracy of the moving position of the valve rod is guaranteed, and the opening and closing precision of the valve is improved.

Preferably, the valve plate includes the plate body, and the one end and the through-hole inner wall rotation that are close to spring seat center of plate body are connected, be equipped with articulated connecting rod between plate body and the slider, be equipped with on the spring holder and act on the slider and shift up the slider spring that drives the plate body and close the through-hole, the plate body lower extreme is equipped with the body of rod with the slider contact. Thus, when the valve rod does not act on the slider, the slider is kept at the stroke top dead center position under the action of the slider spring, and the plate body is kept in a state of closing the through hole. When the sliding block moves downwards, the through hole is opened by the plate body under the driving of the connecting rod.

Preferably, the plate body is obliquely arranged in the through hole. When the valve plate is not acted by the valve rod, the Freon flows into the through hole to act on the plate body of the valve plate, so that the plate body and the through hole are tightly matched, and the sealing effect of the plate body is further improved

The invention has the beneficial effects that: when the sealing gasket slightly displaces relative to the valve hole, the valve still can keep a sealing state, so that the Freon is effectively prevented from being accidentally sprayed out, and the safety of the valve is improved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

In the figure: the valve comprises a valve body 1, a valve hole 1a, an outlet 1b, an inlet 1c, a flow channel 1d, a sealing gasket 2, a sealing conical surface 2a, a spring 3, a valve rod 4, an upper positioning disk 4a, a lower positioning disk 4b, a sealing gasket positioning groove 4c, a valve plate 5, a rod body 6, a sliding block 7, a sliding block spring 8, a spring seat 9, a through hole 9a and a positioning hole 9 b.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

In the embodiment shown in fig. 1, the freon cylinder valve comprises a valve body 1 and a valve rod 4, wherein a vertically arranged flow channel 1d is arranged in the valve body, and the flow channel penetrates from the top of the valve body to the bottom of the valve body. The valve rod slides and sets up in the runner, and the middle part cover of valve rod is equipped with sealed pad 2, and the runner middle part is equipped with and seals up the complex valve opening 1a of filling up. The valve body is provided with an outlet 1b communicated with the upper part of the flow passage and an inlet 1c communicated with the lower part of the flow passage, and the outside of the inlet end and the outlet end are provided with thread sections so as to facilitate the connection and installation of the valve.

The middle part of the valve rod is provided with an upper positioning disk 4a and a lower positioning disk 4b which are arranged in parallel, and a sealing gasket positioning groove 4c for accommodating a sealing gasket is formed between the upper positioning disk and the lower positioning disk. The outer edge of one end, close to the valve hole, of the sealing gasket is provided with a sealing conical surface 2a, and the sealing conical surface is in sealing fit with the valve hole. The edge of the upper surface of the upper positioning plate is provided with a guide conical surface which is small at the top and big at the bottom, and the guide conical surface is in smooth transition with the outer surface of the valve rod.

A spring seat 9 is arranged in the flow passage, a positioning hole 9b which is axially consistent with the flow passage is arranged on the spring seat, and the valve rod is in sliding fit with the positioning hole. And a spring seat positioning groove for axially positioning the spring seat is arranged on the inner side wall of the flow passage, and a spring 3 for pushing the valve rod to be close to the valve hole is arranged on the spring seat. Be equipped with through-hole 9a on the spring holder, be equipped with the valve plate 5 of rotation connection in the through-hole, be equipped with slider 7 in the spring holder.

The valve plate comprises a plate body, and the plate body is obliquely arranged in the through hole. The one end and the through-hole inner wall rotation of plate body near spring seat center are connected, are equipped with articulated connecting rod between plate body and the slider, are equipped with on the spring holder and act on the slider and shift up the slider spring 8 that drives the plate body and close the through-hole, and the plate body lower extreme is equipped with the body of rod 6 with the slider contact, and the slider is opened the valve plate under the valve rod drives.

In the actual operation process, the valve is fixed on the freon gas cylinder, the inlet is communicated with the freon gas cylinder, and the outlet is connected with a corresponding switch and a pipeline. When the valve rod is manually operated to move downwards, the sealing gasket is separated from the valve hole, and the outlet is communicated with the flow passage. The valve rod moves down and then contacts with the sliding block, the sliding block is pushed to move down simultaneously, the valve plate is driven to rotate, the through hole is opened, the inlet and the outlet of the flow passage are communicated, and the Freon in the gas cylinder enters the flow passage of the valve body and flows out from the outlet. When the sealing gasket and the valve hole slightly displace, the valve plate is always kept in a closed state because the valve rod is not in contact with the sliding block, and the Freon can be prevented from being sprayed out from the outlet.

Claims

1. The utility model provides a freon gas cylinder valve, includes valve body (1) and valve rod (4), characterized by, be equipped with runner (1 d) in valve body (1), the middle part cover of valve rod (4) is equipped with sealed pad (2), runner (1 d) middle part is equipped with sealed valve opening (1 a) of pad (2) complex, be equipped with export (1 b) with runner (1 d) upper portion intercommunication and import (1 c) with runner (1 d) lower part intercommunication on valve body (1), be equipped with spring holder (9) in runner (1 d), be equipped with spring (3) that push valve rod (4) are close to valve opening (1 a) on spring holder (9), be equipped with through-hole (9 a) on spring holder (9), be equipped with valve plate (5) of rotation connection in through-hole (9 a), be equipped with slider (7) of opening valve plate (5) under valve rod (4) drive in spring holder (9), valve plate (5) package rubbing board body, the one end and through-hole (9 a) inner wall rotation connection that are close to spring holder (9) center of plate body, be equipped with the articulated connecting rod between plate body and slider (7), be equipped with on spring holder (9) and act on slider (7) and shift up slider spring (8) that drive the plate body and close through-hole (9 a), the plate body lower extreme is equipped with the body of rod (6) with slider (7) contact, the plate body slope set up in through-hole (9 a).

2. A freon gas cylinder valve according to claim 1, characterized in that the valve stem (4) is provided in the middle with an upper positioning plate (4 a) and a lower positioning plate (4 b) arranged in parallel, a gasket positioning groove (4 c) for receiving the gasket (2) being formed between the upper positioning plate (4 a) and the lower positioning plate (4 b).

3. A freon gas cylinder valve according to claim 1, characterized in that the outer edge of the sealing gasket (2) near the end of the valve bore (1 a) is provided with a sealing cone (2 a), said sealing cone (2 a) being in sealing engagement with the valve bore (1 a).

4. A freon cylinder valve as claimed in claim 2, characterized in that the upper surface edge of the upper positioning plate (4 a) is provided with a guiding conical surface with a small upper part and a big lower part, said guiding conical surface being in smooth transition with the outer surface of the valve stem (4).

5. A Freon cylinder valve according to claim 1 or 2 or 3 or 4, characterized in that the spring seat (9) is provided with a positioning hole (9 b) axially aligned with the flow channel (1 d), and the valve stem (4) is in sliding engagement with the positioning hole (9 b).