CN217653260U

CN217653260U - Hard seal sampling valve

Info

Publication number: CN217653260U
Application number: CN202123077040.0U
Authority: CN
Inventors: 李满然; 谭冬阳
Original assignee: Wenzhou Nuomeng Technology Co ltd
Current assignee: Wenzhou Nuomeng Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-10-25
Anticipated expiration: 2031-12-08

Abstract

The utility model relates to a hard sealing sampling valve, which is characterized in that the valve core comprises a conical part, a front end part, a thread part and a fixed part which are connected in sequence, the diameter of the conical tip of the conical part is smaller than the inner diameter of a medium inlet, and the thread part is in threaded connection with a valve body; the conical part on the valve core can be inserted into the medium inlet under the drive of the operating mechanism, and the conical peripheral side wall of the conical part can close the medium inlet, so that the valve core and the valve body form hard seal. The beneficial effects of the utility model are that establish the case into the multistage, utilize the toper portion to come the shutoff medium import to form hard sealing, just can prevent to lead to the sample valve to take place to leak because of medium pressure or high temperature when using. And set up screw thread portion on the case, can need not to set up the valve rod like this and directly utilize screw thread portion and valve body threaded connection, the production and processing of the case of being convenient for. Secondly, through installing spacing piece on the fixed part, when medium pressure is too big, spacing piece can effectively prevent the case departure, effectively avoids taking place the safety in production accident.

Description

Hard seal sampling valve

Technical Field

The utility model relates to a valve, more specifically the sample valve that realizes hard seal that says so relates to a mainly be applied to the pipeline engineering field.

Background

The valve is a pipeline accessory used for opening and closing a pipeline, controlling the flow direction, regulating and controlling the flow of a conveying medium.

In pipeline engineering, the sample valve is essential important part, on the basis of not destroying the pipeline or stopping the equipment that the pipeline links to each other, draws the medium through adding on the pipeline and establishing the sample valve, so not only can conveniently detect the medium in real time, simultaneously, still can utilize the sample valve to monitor pipeline interior operating mode, guarantees pipeline engineering's safe operation.

The existing sampling valve basically adopts soft sealing, namely a sealing ring is used for plugging a medium inlet to prevent leakage, but the sealing ring is easily softened or deformed when the sampling valve is used under the working condition of high pressure or high temperature, so that potential safety hazards such as leakage of the sampling valve are caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a hard seal sampling valve not only can guarantee the sealing performance of valve through this sampling valve, simultaneously, still can prevent the valve atress and lead to the case departure, guarantees the safety in utilization of sampling valve.

In order to solve the technical problems, the technical scheme adopted by the utility model is a hard sealing sampling valve, which comprises a valve body, a valve core, a valve cover and an operating mechanism, wherein a medium inlet and a medium outlet are arranged in the valve body, and the valve cover is connected with the valve body; the valve is characterized in that the valve core comprises a conical part, a front end part, a thread part and a fixing part which are connected in sequence, the diameter of the conical tip of the conical part is smaller than the inner diameter of the medium inlet, the conical part and the front end part are arranged in a valve cavity in the valve body, the thread part is connected with the valve body through threads, and the fixing part is arranged outside the valve body and connected with an operating mechanism through the valve cover; the conical part on the valve core can be inserted into the medium inlet under the driving of the operating mechanism, and the conical peripheral side wall of the conical part can close the medium inlet, so that the valve core and the valve body form hard seal.

Preferably, the diameter of the conical bottom of the conical part is matched with the front end part of the valve core, the conical part, the front end part, the threaded part and the fixing part of the valve core are of an integral structure, a sealing ring is arranged on the outer wall of the front end part of the valve core and above the medium outlet in the valve body, and the sealing ring is attached to the inner wall of the valve cavity in the valve body to form dynamic seal.

Preferably, a counter bore is arranged in the valve cover, connecting threads are arranged on the side wall of the inner periphery of the counter bore, a through hole is formed in the bottom of the counter bore, and the counter bore of the valve cover is in threaded connection with the valve body; the fixing part of the valve core penetrates through the through hole and is arranged outside the valve cover to be connected with the operating mechanism, an annular groove is arranged outside the fixing part, two semicircular limiting pieces are arranged in the annular groove, the limiting pieces are arranged in the limiting groove, and the diameter formed by combining the two limiting pieces is larger than the inner diameter of the through hole.

Preferably, the operating mechanism is a hand wheel, the fixing part of the valve core is welded and fixed with the hand wheel, and a plurality of anti-slip grooves are formed in the outer side wall of the hand wheel.

The beneficial effects of the utility model are that establish the case into the multistage, utilize the toper portion to come the shutoff medium import to form hard sealing, just can prevent to lead to the sample valve to take place to leak because of medium pressure or high temperature when using. And set up screw thread portion on the case, can need not to set up the valve rod like this and directly utilize screw thread portion and valve body threaded connection, the production and processing of the case of being convenient for. Secondly, through installing spacing piece on the fixed part, when medium pressure is too big, spacing piece can prevent effectively that the case from flying out, effectively avoids taking place the safety in production accident.

Drawings

Figure 1 is the embodiment of the utility model provides a cross-sectional structure picture of hard seal sample valve

Figure 2 is a three-dimensional structure diagram of the valve core in the embodiment of the utility model

FIG. 3 is a perspective view of an embodiment of the present invention

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-3, the utility model relates to a hard seal sampling valve, which comprises a valve body 1, a valve core 2, a valve cover 3 and an operating mechanism 4, wherein a medium inlet 11 and a medium outlet 12 are arranged in the valve body 1, and the valve cover 3 is connected with the valve body 1; the valve core 2 comprises a conical part 21, a front end part 22, a thread part 23 and a fixing part 24 which are connected in sequence, the diameter of the conical tip of the conical part 21 is smaller than the inner diameter of the medium inlet 11, the conical part 21 and the front end part 22 are arranged in a valve cavity in the valve body 1, the thread part 23 is in threaded connection with the valve body 1, and the fixing part 24 is arranged outside the valve body 1 and penetrates through the valve cover 3 to be connected with the operating mechanism 4; the conical part 21 of the valve core 2 can be inserted into the medium inlet 11 under the drive of the operating mechanism 4, and the conical peripheral side wall of the conical part can close the medium inlet 11, so that the valve core 2 and the valve body 1 form a hard seal. The valve body 2 is formed in multiple stages, and the medium inlet 11 is blocked by the tapered portion 21 to form a hard seal, so that leakage of the sampling valve due to excessive medium pressure or temperature can be prevented during use. And the valve core 2 is provided with the thread part 23, so that a valve rod is not required to be arranged and is directly connected with the valve body 1 through the thread part 23, and the valve core 2 is convenient to produce and process.

In order to facilitate the production, the processing and the assembly of the valve core 2 and improve the sealing performance between the valve core 2 and the valve body 1, the diameter of the conical bottom of the conical part 21 is matched with the front end part 22 of the valve core 2, the conical part 21, the front end part 22, the threaded part 23 and the fixing part 24 of the valve core 2 are of an integral structure, a sealing ring 25 is arranged on the outer wall of the front end part 22 of the valve core 2 and above the medium outlet 12 in the valve body 1, and the sealing ring 25 is attached to the inner wall of the valve cavity 13 in the valve body 1 to form dynamic sealing. The valve core 2 is designed into a plurality of sections with an integrated structure, so that the valve core 2 can be conveniently produced and processed and assembled with the valve body 1 under the condition of reducing parts of the valve rod, the production and assembly efficiency is improved, the sealing ring 25 is arranged on the front end part 22, the double-sealing guarantee can be formed on the valve core 2 through the conical part 21 and the sealing ring 25, and the sealing performance of the sampling valve is improved to the maximum extent.

In order to prevent the valve core 2 from flying out under pressure when the medium pressure of the sampling valve is overlarge, so that safety production accidents are caused, a counter bore 31 is arranged in the valve cover 3, connecting threads are arranged on the inner peripheral side wall of the counter bore 31, a through hole 32 is arranged at the bottom of the counter bore 31, and the counter bore 31 of the valve cover 3 is in threaded connection with the valve body 1; the fixing part 24 of the valve core 2 passes through the through hole 32 and is arranged outside the valve cover 3 to be connected with the operating mechanism 4, the annular groove 26 is arranged outside the fixing part 24, two semicircular limiting pieces 27 are arranged in the annular groove 26, the limiting pieces 27 are arranged in the annular groove 26, and the diameter formed by combining the two limiting pieces 27 is larger than the inner diameter of the through hole 32. The valve cover 3 is provided with the counter bore 31, so that the valve cover 3 can be fixedly connected with the valve body 1 through threads on the peripheral side wall of the counter bore 31; the counter bore 31 is internally provided with the enclosing through hole 32, so that the valve core 2 can conveniently penetrate through the valve cover 3 to be added with the operating mechanism 4, and meanwhile, the limiting piece 27 arranged outside the fixing part 24 of the valve core 2 can be utilized to limit, and the production accident that the valve core 2 flies out of the valve cover 3 to cause injury and damage to people can be effectively avoided when the valve core 2 is pressed.

In order to facilitate the sampling operation of the sampling valve, the operating mechanism 4 is a hand wheel, the fixing part 24 of the valve core 2 is welded and fixed with the hand wheel, and a plurality of anti-skidding grooves 41 are arranged on the outer side wall of the hand wheel. Through setting up the hand wheel and making the fixed part 24 and the hand wheel fixed connection of case 2, just rotatable hand wheel drives case 2 and rotates along valve body 1 and rise when needs sample, and toper portion 21 on the case 2 breaks away from with medium import 11 mutually like this, and the medium will be discharged through medium export 12 in the valve body 1, realizes the sample operation. And set up a plurality of antiskid groove 41 on the periphery lateral wall of hand wheel, when hand wheel drive valve core 2 was rotatory, just can be more laborsaving take a sample, avoid influencing the working efficiency of sample operation because of the hand is smooth.

The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.

Claims

1. A hard seal sampling valve comprises a valve body, a valve core, a valve cover and an operating mechanism, wherein a medium inlet and a medium outlet are arranged in the valve body, and the valve cover is connected with the valve body; the valve core is characterized by comprising a conical part, a front end part, a thread part and a fixing part which are connected in sequence, wherein the diameter of the conical tip of the conical part is smaller than the inner diameter of a medium inlet, the conical part and the front end part are arranged in a valve cavity in a valve body, the thread part is in threaded connection with the valve body, and the fixing part is arranged outside the valve body and connected with an operating mechanism through a valve cover; the conical part on the valve core can be inserted into the medium inlet under the drive of the operating mechanism, and the conical peripheral side wall of the conical part can close the medium inlet, so that the valve core and the valve body form hard seal.

2. The hard seal sampling valve of claim 1, characterized in that the diameter of the bottom of the cone part is matched with the front end of the valve core, and the cone part, the front end, the thread part and the fixing part of the valve core are an integrated structure, and a sealing ring is arranged on the outer wall of the front end of the valve core above the medium outlet in the valve body, and the sealing ring is attached to the inner wall of the valve cavity in the valve body to form a dynamic seal.

3. The hard sealing sampling valve of claim 1, wherein a counter bore is arranged in the valve cover, a connecting thread is arranged on the inner peripheral side wall of the counter bore, a through hole is arranged at the bottom of the counter bore, and the counter bore of the valve cover is in threaded connection with the valve body; the fixing part of the valve core penetrates through the through hole and is arranged outside the valve cover to be connected with the operating mechanism, an annular groove is arranged outside the fixing part, two semicircular limiting pieces are arranged in the annular groove, the limiting pieces are arranged in the limiting groove, and the diameter formed by combining the two limiting pieces is larger than the inner diameter of the through hole.

4. The sampling valve of claim 1, wherein the operating mechanism is a handwheel, the fixed portion of the valve core is welded to the handwheel, and a plurality of anti-slip grooves are formed in the outer sidewall of the handwheel.