Safety valve for heating and ventilation pipeline

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a safety valve for a heating and ventilation pipeline, which comprises a valve body, a first connecting end and a second connecting end are arranged on the upper portion and the lower portion of the valve body, and a mounting end is arranged on the wall surface of the valve body. The valve element assembly is arranged in the valve body through the second connecting end, a pressure reset assembly is arranged on the valve element assembly, and the pressure reset assembly enables the valve element assembly to abut against the second connecting end.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and particularly relates to a safety valve for heating and ventilation pipelines. Background Technique

[0002] A safety valve is a special valve in which the closing member is normally in a closed state under the action of an external force. When the pressure of the medium in the equipment or pipeline rises above the specified value, the medium is discharged to the outside of the system to prevent the pressure of the medium in the pipeline or equipment from exceeding the specified value. The safety valve belongs to the category of automatic valves and is mainly used on boilers, pressure vessels and pipelines to control the pressure not to exceed the specified value, playing an important role in protecting personal safety and equipment operation.

[0003] During the use of existing safety valves, it is very easy to occur that the pressure relief is too fast, resulting in unstable air supply, or the pressure relief is too little, resulting in pipe explosion. Therefore, we have specifically designed a safety valve for heating and ventilation pipelines. Content of the Utility Model

[0004] The purpose of the utility model is to provide a safety valve for heating and ventilation pipelines in view of the above existing technical problems, achieving the effect of automatically adjusting the pressure relief and regulating the pressure relief flow rate.

[0005] In view of this, the utility model provides a safety valve for heating and ventilation pipelines, including:

[0006] A valve body, with a first connection end and a second connection end arranged up and down on the valve body, and an installation end arranged on the valve body wall surface;

[0007] A spool assembly, the spool assembly is arranged from the second connection end into the valve body, and a pressure reset assembly is arranged on the spool assembly, and the pressure reset assembly presses the spool assembly against the second connection end.

[0008] In the above technical solution, further, the valve body includes:

[0009] A first valve body, with a threaded end arranged at the lower end of the first valve body, and the first connection end is arranged on the first valve body;

[0010] A second valve body, with a threaded groove arranged corresponding to the threaded end on the second valve body, and the second connection end is arranged at the lower end of the second valve body, and the installation end is arranged on the side wall of the second valve body;

[0011] Wherein, a fitting cavity is formed between the first valve body and the second valve body.

[0012] In the above technical solution, further, the spool assembly includes:

[0013] A spool body, the spool body is arranged in the cavity and abuts against the inner port of the second connection end;

[0014] The valve cover is arranged on the first connection end, and a boss is formed by concave inward in the center of the valve cover. The boss seals the first connection end, and a concave cavity is arranged on the outer side of the boss;

[0015] The valve stem is connected to the valve core, penetrates upward through the boss and extends into the concave cavity, and is connected with a bolt;

[0016] The cap is arranged on the concave cavity and restricts the movement of the valve stem.

[0017] In the above technical solution, further, the pressure reset assembly includes:

[0018] The sliding sleeve is arranged in the cavity and is threadedly connected inside the first connection end;

[0019] The spring is arranged on the valve stem, and both ends abut against the valve core body and the sliding sleeve;

[0020] Wherein, a protrusion is arranged on the sliding sleeve, and the spring is sleeved on the protrusion.

[0021] In the above technical solution, further, the valve core body includes:

[0022] The sealing sleeve, and a connecting flange is arranged on the inner side wall surface of the sealing sleeve;

[0023] The fitting block is arranged in the sealing sleeve, and a connecting groove is arranged corresponding to the connecting flange;

[0024] Wherein, a limiting cavity is formed by concave inward on the end surface of the fitting block in contact with the sealing sleeve, and a limiting flange is arranged on the valve stem corresponding to the limiting cavity and is limited and fixed in the limiting cavity.

[0025] In the above technical solution, further, it further includes:

[0026] The sealing edge is arranged on the edge of the sealing sleeve and abuts against the end surface of the thread groove.

[0027] In the above technical solution, further, it further includes:

[0028] The threaded head is arranged on the valve stem and is on the end surface of the limiting flange;

[0029] Wherein, a threaded hole is arranged on the sealing sleeve corresponding to the threaded head.

[0030] The beneficial effects of the present utility model are:

[0031] 1. Automatically adjust the pressure relief, improve the use safety, save labor at the same time, and ensure the pipeline safety.

[0032] 2. It is possible to control the valve core body to change the distance between the inner ports of the second connection end by the thread fit between the manually made valve cover and the first connection end, so as to realize the function of adjusting the fluid flow rate after opening and closing. Brief Description of the Drawings

[0033] Figure 1 is a perspective view of the present utility model;

[0034] Figure 2 is a schematic structural view of the present utility model;

[0035] The markings in the figure are shown as: 1, valve body; 11, first valve body; 111, threaded end; 12, second valve body; 121, threaded groove; 2, first connection end; 3, second connection end; 4, installation end; 51, valve core body; 511, sealing sleeve; 5111, connecting flange; 5112, sealing edge; 5113, threaded hole; 512, mating block; 5121, connecting groove; 5122, limiting cavity; 52, valve cover; 521, boss; 522, concave cavity; 53, valve stem; 531, limiting flange; 532, threaded head; 54, cap; 55, nut; 6, pressure reset assembly; 61, sliding sleeve; 611, protrusion; 62, spring. Detailed Description of the Preferred Embodiments

[0036] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0037] Embodiment 1:

[0038] This embodiment provides a safety valve for a heating and ventilation pipeline, including:

[0039] A valve body 1, with a first connection end 2 and a second connection end 3 arranged up and down on the valve body 1, and an installation end 4 arranged on the wall surface of the valve body 1;

[0040] A valve core assembly, the valve core assembly is arranged into the valve body 1 from the second connection end 3, and a pressure reset assembly 6 is arranged on the valve core assembly, and the pressure reset assembly 6 presses the valve core assembly against the second connection end 3.

[0041] It can be seen from this embodiment that a safety valve for a heating and ventilation pipeline includes a valve body 1 and a valve core assembly;

[0042] The first connection end 2 and the second connection end 3 are arranged up and down on the valve body 1. The first connection end 2 is used to install the valve core assembly, the second connection end 3 is used to connect external pipe fittings, and the installation end 4 is arranged on the wall surface of the valve body 1 for connecting with external pipe fittings and relieving pressure during use;

[0043] The valve core assembly is installed in the valve body 1 and abuts against the second connection end 3. When in use, the valve core assembly controls the opening and closing of the flow rate at the second connection end 3. Further, a pressure reset assembly 6 is installed on the valve core assembly, and the pressure reset assembly 6 is used to control the valve core assembly to open and close the second connection end 3;

[0044] Automatic pressure relief adjustment improves the safety of use. At the same time, it saves labor and ensures the safety of the pipeline.

[0045] Embodiment 2:

[0046] This embodiment provides a safety valve for a heating and ventilation pipeline. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0047] The valve body 1 includes:

[0048] The first valve body 11, a threaded end 11 is provided at the lower end of the first valve body 11, and the first connection end 2 is provided on the first valve body 11;

[0049] The second valve body 12, the second valve body 12 is provided with a threaded groove 12 corresponding to the threaded end 11, and the second connection end 3 is provided at the lower end of the second valve body 12, and the installation end 4 is provided on the side wall of the second valve body 12;

[0050] Wherein, a mating cavity is formed between the first valve body 11 and the second valve body 12.

[0051] It can be seen from this embodiment that the valve body 1 includes the first valve body 11 and the second valve body 12;

[0052] The first connection end 2 is formed at the upper end of the first valve body 11, the threaded end 11 is formed at the lower end of the first valve body 11, the second connection end 3 is formed at the lower end of the second valve body 12, and the installation end 4 is formed on the side wall surface of the second valve body 12. The upper end of the second valve body 12 is open and is formed with a threaded groove 12 corresponding to the threaded end 11. After the first valve body 11 and the second valve body 12 are assembled, a cavity is formed inside for installing the valve core assembly and the pressure reset assembly 6;

[0053] When in use, the first valve body 11 is fixed to the second valve body 12 through the cooperation of the threaded end 11 and the threaded groove 12. By providing the detachable and assembled first valve body 11 and the second valve body 12, it is convenient to install the valve core, and the overall forming difficulty of the valve body 1 is reduced.

[0054] Embodiment 3:

[0055] This embodiment provides a safety valve for a heating and ventilation pipeline. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0056] The valve core assembly includes:

[0057] The valve core body 51 is arranged in the cavity and abuts against the inner port of the second connection end 3;

[0058] The valve cover 52 is arranged on the first connection end 2, and a boss 521 is formed by concave inward in the center of the valve cover 52. The boss 521 seals the first connection end 2, and a concave cavity 522 is arranged on the outer side of the boss 521;

[0059] The valve rod 53 is connected to the valve core, penetrates upward through the boss 521 and extends into the concave cavity 522, and is connected with a bolt;

[0060] The cap 54 is arranged on the concave cavity 522 and restricts the movement of the valve rod 53.

[0061] It can be seen from this embodiment that the valve core assembly includes a valve core body 51, a valve cover 52, a valve rod 53 and a cap 54;

[0062] The valve core body 51 is installed in the cavity and abuts against the inner port of the second connection end 3. The valve cover 52 is connected to the outer port of the first connection end 2, and a boss 521 is formed by concave inward in the center of the valve cover 52. Threads are formed on the wall surface of the boss 521. The boss 521 is threaded with the first connection end 2 and closes the first connection end 2. At the same time, a concave cavity 522 is formed on the outer side of the boss 521, and a cap 54 is threadedly connected to the concave cavity 522. The valve rod 53 is arranged in the cavity, one end is connected to the valve core body 51, the other end penetrates through the boss 521 and extends into the concave cavity 522, and is limited and fixed between the concave cavity 522 and the cap 54 by a connecting nut 55, and there is a certain space between the valve rod 53 and the cap 54;

[0063] When in use, the distance between the inner ports of the second connection end 3 can be controlled by manually making the threaded fit between the valve cover 52 and the first connection end 2 to change the valve core body 51, so as to realize the function of adjusting the fluid flow rate after opening and closing.

[0064] Embodiment 4:

[0065] This embodiment provides a safety valve for a heating and ventilation pipeline. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0066] The pressure reset assembly 6 includes:

[0067] The sliding sleeve 61 is arranged in the cavity and is threadedly connected inside the first connection end 2;

[0068] The spring 62 is arranged on the valve rod 53, and both ends abut against the valve core body 51 and the sliding sleeve 61;

[0069] Wherein, a protrusion 611 is arranged on the sliding sleeve 61, and the spring 62 is sleeved on the protrusion 611.

[0070] As can be seen from this embodiment, the pressure reset member includes a sliding sleeve 61 and a spring 62;

[0071] The sliding sleeve 61 is provided with a sliding hole for connecting the valve stem 53, and a protrusion 611 is provided at the lower end of the sliding sleeve 61. The protrusion 611 is used to connect the spring 62. Further, the sliding sleeve 61 is threadedly connected to the first valve body 11 and is threadedly connected to the inside of the first connection end 2. A sealing gasket is provided on the connection and mating surface between the sliding sleeve 61 and the first valve body 11, and the sealing gasket plays a role in sealing and preventing leakage;

[0072] The spring 62 is sleeved on the valve stem 53, and both ends are respectively abutted against the sliding sleeve 61 and the valve core body 51. During use, the spring 62 tightly abuts the valve core body 51 against the port of the second connection end 3. When the pressure outside the second connection end 3 is large, the spring 62 contracts, and the valve core body 51 is pushed open until the upper end of the valve stem 53 abuts against the cap 54. Furthermore, a pressure relief channel communicating with the installation end 4 is formed between the valve core body 51 and the port of the second connection end 3, thereby achieving the purpose of regulating pressure relief. At the same time, the distance between the valve stem 53 and the cap 54 can be adjusted by the threaded fit between the valve cover 52 and the first connection end 2, so as to achieve the effect of controlling the size of the pressure relief flow rate.

[0073] Embodiment 5:

[0074] This embodiment provides a safety valve for a heating and ventilation pipeline. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0075] The valve core body 51 includes:

[0076] A sealing sleeve 511, and a connecting flange 511 is provided on the inner side wall surface of the sealing sleeve 511;

[0077] A mating block 512, the mating block 512 is arranged in the sealing sleeve 511, and a connecting groove 512 is provided corresponding to the connecting flange 511;

[0078] Wherein, a limiting cavity 5122 is concavely formed on the end surface of the mating block 512 in contact with the sealing sleeve 511. The valve stem 53 is provided with a limiting flange 531 corresponding to the limiting cavity 5122 and is limited and fixed in the limiting cavity 5122.

[0079] As can be seen from this embodiment, the valve core body 51 includes a sealing sleeve 511 and a mating block 512;

[0080] A connecting flange 511 is provided on the inner side wall surface of the sealing sleeve 511. The mating block 512 is arranged in the sealing sleeve 511 and is limited and fixed together with the connecting flange 511 by providing a connecting groove 512 on the outer side wall surface;

[0081] Further, a limiting cavity 5122 is formed by the concave connection mating surface between the mating block 512 and the sealing sleeve 511, and a limiting flange 531 is provided on a section of the valve stem 53 connecting the valve core body 51. During use, one end of the valve stem 53 passes through the mating block 512 and the sliding sleeve 61 and is connected to the concave cavity 522, while the limiting flange 531 on the other end of the valve stem 53 is limited in the limiting cavity 5122 and is fixed after the mating block 512 and the sealing sleeve 511 are connected.

[0082] Embodiment 6:

[0083] This embodiment provides a safety valve for a heating and ventilation pipeline. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0084] A sealing edge 5112 is provided on the edge of the sealing sleeve 511 and abuts against the end face of the thread groove 12.

[0085] It can be seen from this embodiment that by providing the sealing edge 5112, the contact area between the sealing sleeve 511 and the second connection end 3 is enlarged, which helps to improve the sealing effect.

[0086] Embodiment 7:

[0087] This embodiment provides a safety valve for a heating and ventilation pipeline. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0088] A threaded head 532 is provided on the valve stem 53 and is located on the end face of the limiting flange 531;

[0089] Among them, a threaded hole 5113 is provided on the sealing sleeve 511 corresponding to the threaded head 532.

[0090] It can be seen from this embodiment that the threaded head 532 is provided on one end of the valve stem 53 with the limiting flange 531, and the sealing sleeve 511 is correspondingly provided with a threaded hole 5113, so that the connection between the valve stem 53 and the valve core body 51 is stable and helps to improve the effect of the reset work.

[0091] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present application, without departing from the purpose of the present application and the scope protected by the claims, can also make many forms, all of which belong to the protection scope of the present application.

Claims

1. A safety valve for HVAC pipeline, characterized in that it includes: A valve body (1), wherein the valve body (1) is provided with a first connecting end (2) and a second connecting end (3) at the top and bottom, and a mounting end (4) is provided on the wall surface of the valve body (1); A valve core assembly is provided in a valve body (1) via a second connection end (3). A pressure reset assembly (6) is provided on the valve core assembly, and the pressure reset assembly presses the valve core assembly against the second connection end (3).

2. A safety valve for HVAC pipes according to claim 1, characterized in that: The valve body (1) comprises: A first valve body (11), wherein a threaded end (111) is disposed at a lower end of the first valve body (11), and the first connecting end (2) is disposed on the first valve body (11); A second valve body (12), wherein the second valve body (12) is provided with a thread groove (121) corresponding to the threaded end (111), and the second connecting end (3) is provided at the lower end of the second valve body (12), and the mounting end (4) is provided on the side wall of the second valve body (12); Wherein, a matching cavity is formed between the first valve body (11) and the second valve body (12).

3. A safety valve for HVAC pipes according to claim 2, characterized in that: The valve core assembly includes: A valve core body (51), wherein the valve core body (51) is arranged in the cavity and abuts against an inner port of the second connecting end (3); A valve cover (52), wherein the valve cover (52) is arranged on the first connecting end (2), and the center of the valve cover (52) is concave to form a boss (521), the boss (521) seals the first connecting end (2), and a concave cavity (522) is arranged on the outer side of the boss (521); A valve stem (53), the valve stem (53) is connected to the valve core, and extends upward through the boss (521) into the concave cavity (522), and is connected with a bolt; A cap (54) is disposed on the concave cavity (522) and limits the movement of the valve stem (53).

4. A safety valve for HVAC pipes according to claim 3, characterized in that: The pressure reset assembly (6) comprises: A sliding sleeve (61), wherein the sliding sleeve (61) is arranged in the cavity and is threadedly connected to the first connecting end (2); A spring (62), wherein the spring (62) is arranged on the valve stem (53), and both ends of the spring (62) are against the valve core body (51) and the sliding sleeve (61); Wherein, the sliding sleeve (61) is provided with a protrusion (611), and the spring (62) is sleeved on the protrusion (611).

5. A safety valve for HVAC pipes according to claim 4, characterized in that: The valve core body (51) comprises: A sealing sleeve (511), wherein the inner wall surface of the sealing sleeve (511) is provided with a connecting flange (5111); A matching block (512), wherein the matching block (512) is disposed in the sealing sleeve (511) and is provided with a connecting groove (5121) corresponding to the connecting flange (5111); The end surface of the matching block (512) in contact with the sealing sleeve (511) is concave to form a limiting cavity (5122), and the valve stem (53) is provided with a limiting flange (531) corresponding to the limiting cavity (5122) and is fixed in the limiting cavity (5122).

6. A safety valve for HVAC pipes according to claim 5, characterized in that include: A sealing edge (5112), wherein the sealing edge (5112) is arranged on the edge of the sealing sleeve (511) and abuts against the end surface of the thread groove (121).

7. A safety valve for HVAC pipes according to claim 6, characterized in that include: A threaded head (532), wherein the threaded head (532) is arranged on the valve stem (53) and is located on the end surface of the limiting flange (531); Wherein, the sealing sleeve (511) is provided with a threaded hole (5113) corresponding to the threaded head (532).

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