Valve body fixed by double-layer threads

Abstract

The utility model discloses a double-layer thread fixed valve body, which comprises a valve body, pipe bodies and connecting mechanisms, the two ends of the valve body are detachably connected with the pipe bodies, the connecting mechanisms are arranged at the joints between the end parts of the pipe bodies and the end parts of the valve body, and each connecting mechanism comprises a connecting pipe, a sleeve A, a screw pipe and a sleeve B, connecting pipes are integrally formed at the two ends of the valve body, and sleeves A are fixedly connected to the positions, located on the peripheries of the connecting pipes, of the two ends of the valve body. When the pipe body and the valve body are in butt joint, the end of the pipe body is aligned with the end of the valve body and screwed in, so that the screw pipes are screwed into the connecting pipes; meanwhile, the sleeve B is integrally screwed into the sleeve A until the end of the sleeve A is in butt joint with the end of the pipe body, so that threaded connection between the valve body and the pipe body can be completed, a multi-layer threaded structure is adopted, the connection strength and sealing performance of the joint are improved after connection is in place, the valve body of a threaded fixing structure can be suitable for a pipeline with higher conveying pressure, and the service life of the valve body is prolonged. And the application range of the threaded structure valve body is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline accessories, in particular to a valve body fixed with double threads. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems and have functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. The valve body is a major component in the valve, and there are different mechanical manufacturing methods according to the pressure level. It is usually connected to the pipe body by flange connection or threaded connection.

[0003] The existing threaded valve body has the following disadvantages when in use: the existing threaded fixed valve body structure generally directly opens an internal thread groove or an external thread groove at the connecting end of the valve body, and the connection between it and the pipe body can only be achieved through a single-layer thread connection through the opened thread structure. Therefore, the existing threaded structure valve body can usually only be used in ordinary pipelines with relatively low internal pressure. For pipelines with relatively high internal pressure, valves with a single thread structure will be greatly affected. For this reason, we propose a double-layer threaded fixed valve body. Utility Model Content

[0004] The main purpose of the utility model is to provide a valve body fixed with double layers of threads. By setting a connecting mechanism between the valve body and the tube body, a double-layer threaded connection is adopted to improve the connection strength and sealing of the connecting end of the valve body, so that the valve body fixed with threads can be more widely used and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A double-layer threaded fixed valve body comprises a valve body, a tube body and a connecting mechanism, wherein the two ends of the valve body are detachably connected to the tube body and a connecting mechanism is provided at the connection between the end of the tube body and the end of the valve body, the connecting mechanism comprises a connecting pipe, a sleeve A, a spiral tube and a sleeve B, the two ends of the valve body are integrally formed with connecting pipes and the two ends of the valve body are fixedly connected with sleeve A at the peripheral position of the connecting pipe, the end of the tube body is integrally formed with a spiral tube and the end of the tube body is fixedly connected with sleeve B at the peripheral position of the spiral tube.

[0007] Further, it further includes a sealing mechanism. A sealing mechanism is provided at the connection between the end of the valve body and the end of the pipe body. The sealing mechanism includes sealing ring A and sealing ring B. Sealing ring A is installed near the valve body end inside the sleeve A, and sealing ring B is installed near the pipe body end inside the sleeve B; when the end of the valve body and the end of the pipe body are screwed and butted in place, the sleeve B is screwed into the inside of the sleeve A and the end of the sleeve B abuts against the inside of the sleeve A. At the same time, the end of the connecting pipe abuts against the inside of the sleeve B. The sealing rings A and B located inside the sleeve A and the sleeve B are exactly in the butting position, which can seal the connection and maintain the connection tightness.

[0008] Further, internal screw grooves are provided on the inner walls of the connecting pipe, the sleeve A, and the sleeve B, and external screw grooves are provided on the outer walls of the connecting pipe, the sleeve B, and the screw pipe; the connection between the pipe body and the valve body is realized through the cooperation of the internal screw grooves and the external screw grooves.

[0009] Further, the connecting pipe is connected to the screw pipe through the internal screw groove and the connecting pipe is connected to the sleeve B through the external screw groove, and the sleeve A is connected to the sleeve B through the internal screw groove; the connecting pipe, the sleeve A, the screw pipe, and the sleeve B are respectively connected through the cooperation of the external screw groove and the internal screw groove.

[0010] Further, a sealing ring C is installed at the end of the sleeve B and the sealing ring C is located at the connection between the sleeve A and the pipe body; when the pipe body is butted, the sealing ring C is located at the connection between the sleeve A and the pipe body, playing a role in strengthening the seal.

[0011] Compared with the prior art, the present utility model has the following beneficial effects: Connecting pipes are respectively provided at both ends of the valve body and a sleeve A is provided on the outer periphery of the connecting pipe. A screw pipe is provided at the connecting end of the pipe body and a sleeve B is provided on the outer periphery of the screw pipe. When docking the pipe body and the valve body, align the end of the pipe body with the end of the valve body and screw it in, so that the screw pipe is screwed into the inside of the connecting pipe. At the same time, the whole sleeve B is screwed into the inside of the sleeve A until the end of the sleeve A is butted against the end of the pipe body, and the screwing connection between the valve body and the pipe body can be completed. A multi-layer screwing structure is adopted to improve the connection strength and tightness at the connection after being connected in place, so that the valve body with a threaded fixing structure can be applied to pipelines with a greater conveying pressure, expanding the applicable range of the threaded structure valve body; when the end of the valve body and the end of the pipe body are screwed and butted in place, the sleeve B is screwed into the inside of the sleeve A and the end of the sleeve B abuts against the inside of the sleeve A. At the same time, the end of the connecting pipe abuts against the inside of the sleeve B. The sealing rings A and B located inside the sleeve A and the sleeve B are exactly in the butting position, which can seal the connection and maintain the connection tightness. Description of the Drawings

[0012] Figure 1 It is the overall structural schematic diagram of a valve body with a double-layer thread fixing of the present utility model.

[0013] Figure 2 Schematic diagram of the end structure of the pipe body of a valve body with double-layer thread fixation according to the present utility model.

[0014] Figure 3 Schematic diagram of the end structure of the valve body of a valve body with double-layer thread fixation according to the present utility model.

[0015] In the figure: 1, valve body; 2, pipe body; 3, connection mechanism; 301, connecting pipe; 302, sleeve A; 303, screw pipe; 304, sleeve B; 305, internal thread groove; 306, external thread groove; 4, sealing mechanism; 401, sealing ring A; 402, sealing ring B; 403, sealing ring C. Specific embodiments

[0016] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] As Figures 1-3 shown, a valve body with double-layer thread fixation includes a valve body 1, and also includes a pipe body 2 and a connection mechanism 3. The two ends of the valve body 1 are detachably connected with the pipe body 2, and a connection mechanism 3 is provided at the connection between the end of the pipe body 2 and the end of the valve body 1. The connection mechanism 3 includes a connecting pipe 301, a sleeve A 302, a screw pipe 303 and a sleeve B 304. Connecting pipes 301 are integrally formed at both ends of the valve body 1, and sleeve A 302 is fixedly connected to the outer peripheral position of the connecting pipes 301 at both ends of the valve body 1. A screw pipe 303 is integrally formed at the end of the pipe body 2, and a sleeve B 304 is fixedly connected to the outer peripheral position of the screw pipe 303 at the end of the pipe body 2.

[0018] Among them, it further includes a sealing mechanism 4. A sealing mechanism 4 is provided at the connection between the end of the valve body 1 and the end of the pipe body 2. The sealing mechanism 4 includes a sealing ring A 401 and a sealing ring B 402. A sealing ring A 401 is installed at one end of the sleeve A 302 close to the valve body 1, and a sealing ring B 402 is installed at one end of the sleeve B 304 close to the pipe body 2. When the end of the valve body 1 and the end of the pipe body 2 are screwed and butted in place, the sleeve B 304 is screwed into the inside of the sleeve A 302, and the end of the sleeve B 304 abuts against the inside of the sleeve A 302. At the same time, the end of the connecting pipe 301 abuts against the inside of the sleeve B 304. The sealing rings A 401 and B 402 located inside the sleeve A 302 and the sleeve B 304 are exactly in the butting position, which can seal the connection and maintain the connection tightness.

[0019] Wherein, inner screw grooves 305 are provided on the inner walls of the connecting pipe 301, the sleeve A 302, and the sleeve B 304. Outer screw grooves 306 are provided on the outer walls of the connecting pipe 301, the sleeve B 304, and the screw pipe 303. The connecting pipe 301 is connected to the screw pipe 303 through the inner screw groove 305 and the connecting pipe 301 is connected to the sleeve B 304 through the outer screw groove 306. The sleeve A 302 is connected to the sleeve B 304 through the inner screw groove 305. The connection between the pipe body 2 and the valve body 1 is realized through the cooperation of the inner screw groove 305 and the outer screw groove 306. The connecting pipe 301, the sleeve A 302, the screw pipe 303, and the sleeve B 304 are respectively connected through the cooperation of the outer screw groove 306 and the inner screw groove 305.

[0020] Wherein, a sealing ring C 403 is installed at the end of the sleeve B 304 and the sealing ring C 403 is located at the connection between the sleeve A 302 and the pipe body 2. When the docking of the pipe body 2 is completed, the sealing ring C 403 is located at the connection between the sleeve A 302 and the pipe body 2, playing a role in strengthening the seal.

[0021] It should be noted that the present utility model is a valve body with double-layer thread fixation. In use, connecting pipes 301 are respectively provided at both ends of the valve body 1 and a sleeve A 302 is provided on the outer periphery of the connecting pipe 301. A screw pipe 303 is provided at the connecting end of the pipe body 2 and a sleeve B 304 is provided on the outer periphery of the screw pipe 303. When docking the pipe body 2 and the valve body 1, align the end of the pipe body 2 with the end of the valve body 1 and screw it in, so that the screw pipe 303 is screwed into the inside of the connecting pipe 301. At the same time, the whole sleeve B 304 is screwed into the inside of the sleeve A 302 until the end of the sleeve A 302 is docked with the end of the pipe body 2, then the screw connection between the valve body 1 and the pipe body 2 can be completed. Adopting a multi-layer screw connection structure, the connection strength and sealing performance at the connection are improved after being connected in place, enabling the valve body 1 with a thread fixation structure to be applicable to pipelines with a greater conveying pressure, expanding the application range of the valve body 1 with a thread structure. When the ends of the valve body 1 and the pipe body 2 are screwed and docked in place, the sleeve B 304 is screwed into the inside of the sleeve A 302 and the end of the sleeve B 304 abuts against the inside of the sleeve A 302. At the same time, the end of the connecting pipe 301 abuts against the inside of the sleeve B 304. The sealing rings A 401 and B 402 located inside the sleeve A 302 and the sleeve B 304 are exactly in the docking position, which can seal the connection and maintain the connection tightness.

[0022] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A valve body fixed by double-layer threads, comprising a valve body (1), characterized in that, It further includes a pipe body (2) and a connecting mechanism (3). Both ends of the valve body (1) are detachably connected to the pipe body (2), and a connecting mechanism (3) is provided at the connection between the end of the pipe body (2) and the end of the valve body (1). The connecting mechanism (3) includes a connecting pipe (301), a sleeve A (302), a screw pipe (303), and a sleeve B (304). Connecting pipes (301) are integrally formed at both ends of the valve body (1), and sleeve A (302) is fixedly connected to the outer periphery of the connecting pipes (301) at both ends of the valve body (1). A screw pipe (303) is integrally formed at the end of the pipe body (2), and sleeve B (304) is fixedly connected to the outer periphery of the screw pipe (303) at the end of the pipe body (2).

2. A valve body with double-layer thread fixation according to claim 1, characterized in that: It further includes a sealing mechanism (4). A sealing mechanism (4) is provided at the connection between the end of the valve body (1) and the end of the pipe body (2). The sealing mechanism (4) includes a sealing ring A (401) and a sealing ring B (402). A sealing ring A (401) is installed near the end of the valve body (1) inside the sleeve A (302), and a sealing ring B (402) is installed near the end of the pipe body (2) inside the sleeve B (304).

3. A valve body with double-layer thread fixation according to claim 1, characterized in that: Inner screw grooves (305) are provided on the inner walls of the connecting pipe (301), the sleeve A (302), and the sleeve B (304), and outer screw grooves (306) are provided on the outer walls of the connecting pipe (301), the sleeve B (304), and the screw pipe (303).

4. A valve body with double-layer thread fixation according to claim 1, characterized in that: The connecting pipe (301) is connected to the screw pipe (303) through the inner screw groove (305), and the connecting pipe (301) is connected to the sleeve B (304) through the outer screw groove (306). The sleeve A (302) is connected to the sleeve B (304) through the inner screw groove (305).

5. The valve body with double-layer thread fixation according to claim 2, wherein: A sealing ring C (403) is installed at the end of the sleeve B (304), and the sealing ring C (403) is located at the connection between the sleeve A (302) and the pipe body (2).

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