CN210800151U - A kind of high temperature resistant one-way valve - Google Patents

Abstract

The utility model relates to the technical field of valves, in particular to a high temperature resistant one-way valve. Its technical scheme is that it includes a valve body, the valve body is provided with an inner cavity, the upper part of the inner cavity is provided with a fluid outlet communicating with it, the lower part of the inner cavity is provided with a fluid inlet communicating with it, and the inner cavity is divided into flow guides. The sealing section is cylindrical; the valve core is movably arranged in the inner cavity, and the valve core is divided into a guiding body and a sealing body, and a guiding groove is arranged in the longitudinal direction of the guiding body, and the guiding The segment is in clearance fit with the diversion segment, and the sealing body is matched with the sealing segment. The one-way valve has no spring design, and completes the sealing effect through the gravity of its valve core, which overcomes the technical problem that the traditional one-way valve loses the sealing performance due to the failure of the spring elasticity in a high temperature environment; the one-way valve has a simple structure, and is easy to maintain and repair Low cost; the one-way valve prolongs the service life and reduces the production cost and maintenance cost of the enterprise.

Description

A kind of high temperature resistant one-way valve

technical field

The utility model relates to the technical field of valves, in particular to a high temperature resistant one-way valve.

Background technique

One-way valve is a directional control valve in which airflow can only flow in one direction and cannot flow in the opposite direction. Although there are many kinds of one-way valves on the market, there are still some technical problems due to some special application environments, for example, in high temperature environments. However, when the spring works in a high temperature environment for a long time, its elastic force will accelerate and decay and eventually lose its elasticity, resulting in the failure of the one-way valve, resulting in equipment failure or failure. Production accidents, and even life-threatening. Therefore, most of the one-way valves are affected by the high temperature environment, and their service life is greatly shortened, which increases the maintenance cost for the enterprise, directly affects the production efficiency, and even has potential safety hazards at any time.

SUMMARY OF THE INVENTION

One aspect of the present disclosure provides a one-way valve, the purpose of which is to solve the stability of the one-way valve in a high temperature environment, prolong the service life of the one-way valve, and save maintenance costs.

In order to achieve the above purpose, the present utility model adopts the following technical solutions, and the present utility model includes:

a valve body, the valve body is provided with an inner cavity, the upper part of the inner cavity is provided with a gas outlet communicating with it, and the lower part of the inner cavity is provided with a gas inlet communicating with it; The section is arranged above the sealing section, the sealing section is cylindrical, the diversion section is square or cylindrical, and the inner diameter of the diversion section is larger than the inner diameter of the sealing section;

The valve core is movably arranged in the inner cavity of the valve body. The valve core is divided into a guide body and a sealing body. The guide body is provided with a guide groove in the longitudinal direction. The guide groove is used when the one-way valve is opened. The gas is circulated, and the guiding body is matched with the guiding section; the sealing body is conical, and the sealing body is matched with the sealing section;

The inner diameter of the sealing section is smaller than the maximum outer diameter of the sealing body.

Further, the gas outlet is provided with a retaining ring, and the cavity wall of the inner cavity is provided with a retaining ring groove matching with the retaining ring.

Further, the top of the valve body is provided with a cover plate, the cover plate is provided with through holes, and the through holes communicate with the gas outlet.

Preferably, the sealing body is in a frustoconical shape, that is, a truncated cone, and the inner diameter of the sealing section is between the outer diameters of the upper and lower bottom surfaces of the sealing body.

Preferably, the sealing body and the sealing segment cooperate in a sealing manner.

Compared with the prior art, the one-way valve of the present invention has no spring design, and completes the sealing effect through the gravity of the valve core itself, which overcomes the technical problem that the traditional one-way valve loses the sealing performance due to the elastic failure of the spring in a high temperature environment; Secondly, the one-way valve has a simple structure and low maintenance and repair costs; thirdly, the one-way valve prolongs the service life and reduces the production cost and maintenance cost of the enterprise.

Description of drawings

1 is a schematic diagram of an overall structure according to an aspect of the present disclosure;

FIG. 2 is a schematic diagram of a valve body structure according to an aspect of the present disclosure;

3 is a schematic diagram of a valve core structure according to an aspect of the present disclosure;

4 is a schematic diagram of a cross-sectional structure of a valve core according to an aspect of the present disclosure;

In the figure, 1- valve body, 2- valve core, 3- gas outlet, 4- gas inlet, 5- retaining ring, 6- guide groove, 7- guide section, 8- seal section.

Detailed ways

The present utility model will be further explained below in conjunction with specific embodiments, but it is not limited to the present utility model. The structures, proportions, sizes, etc. shown in the accompanying drawings are only used to cooperate with the contents disclosed in the specification for the purpose of providing Those who are familiar with this technology understand and read, it is not used to limit the conditions that the present utility model can be implemented, so it has no technical substantive significance, and any structural modification, proportional relationship change or size adjustment will not affect the present utility model. The effect that can be produced and the purpose that can be achieved should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, terms such as "upper", "lower", "front", "back", "middle", etc. quoted in this specification are only for the convenience of description and clarity, and are not used to limit the implementation of the present invention. The change or adjustment of the scope and its relative relationship shall also be regarded as the applicable scope of the present invention without substantially changing the technical content.

According to an embodiment of an aspect of the present disclosure, as shown in FIGS. 1-4 , the high temperature resistant one-way valve includes a valve body 1 , the valve body 1 is provided with an inner cavity, and a gas outlet 3 communicated therewith is provided above the inner cavity , the gas outlet 3 is provided with a retaining ring 5, the cavity wall of the inner cavity is provided with a retaining ring groove that matches the retaining ring 5, and the lower part of the inner cavity is provided with a gas inlet 4 that communicates with it, and the inner cavity includes a guide Section 7 and sealing section 8, the diversion section 7 is arranged above the sealing section 8, the diversion section 7 and the sealing section 8 are both cylindrical, and the inner diameter of the diversion section 7 is larger than the inner diameter of the sealing section 8;

The valve core 2, the valve core 2 is movably arranged in the inner cavity of the valve body 1, and the valve core 2 is divided into a guide body 9 and a sealing body 10. The groove 6 is used for gas circulation when the one-way valve is opened, and the guiding body 9 is in clearance fit with the guiding section 7; Between the diameters, the sealing body 10 and the sealing section 8 are in sealing fit.

The above-mentioned high temperature resistant one-way valve is installed vertically, that is, the lower end of the one-way valve is the gas inlet 4, the gas enters the valve body 1 from below, and after the gas flows in, an upward force is generated on the valve core 2. When the upward force of the gas is greater than that of the valve core 2 The one-way valve is opened, and the gas is discharged from the outlet 3 of the one-way valve through the diversion groove 6 of the valve core 2. When the gas is cut off or the pressure of the gas is less than the gravity of the valve core 2, the valve core 2 is under the gravity of the valve core 2. Under the action of the valve body 1, it is sealed with the sealing section 8 of the valve body 1, and the one-way valve is closed.

If there is a backflow at the outlet 3 of the one-way valve, that is, there will be gas flowing into the outlet. At this time, the upward pressure of the gas entering from the inlet 4 of the one-way valve on the valve core 2 is greater than the gravity of the valve core 2 and the gas entering the outlet. The downward pressure on the spool 2 can only be opened.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. A high temperature resistant one-way valve, characterized in that: comprising: a valve body, the valve body is provided with an inner cavity, the upper part of the inner cavity is provided with a gas outlet communicating with it, and the lower part of the inner cavity is provided with a gas inlet communicating with it; The section is arranged above the sealing section, the sealing section is cylindrical, and the inner diameter of the diversion section is larger than the inner diameter of the sealing section; The valve core is movably arranged in the inner cavity of the valve body. The valve core is divided into a guide body and a sealing body. The guide body is provided with a guide groove in the longitudinal direction. The guide groove is used when the one-way valve is opened. The gas is circulated, and the guiding body is matched with the guiding section; the sealing body is conical, and the sealing body is matched with the sealing section; The inner diameter of the sealing section is smaller than the maximum outer diameter of the sealing body. 2 . A high temperature resistant one-way valve according to claim 1 , wherein a retaining ring is provided at the gas outlet, and a retaining ring groove matching the retaining ring is provided on the cavity wall of the inner cavity. 3 . 3. A high temperature resistant one-way valve according to claim 1, wherein the top of the valve body is provided with a cover plate, the cover plate is provided with through holes, and the through holes communicate with the gas outlet. 4. A high temperature resistant one-way valve according to claim 1, characterized in that: the sealing body is in the shape of a frustoconical shape, that is, a truncated cone, and the inner diameter of the sealing section is between the outer diameters of the upper and lower bottom surfaces of the sealing body. 5 . The high temperature resistant one-way valve according to claim 1 , wherein the sealing body and the sealing section are matched in a sealing manner. 6 .

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