Stable-connection heating and ventilation valve

Abstract

The utility model provides a stably-connected heating and ventilation valve, and belongs to the technical field of valves. A stably-connected heating and ventilation valve comprises a hollow valve body and is characterized in that symmetrically-arranged connecting flanges are fixed to the two ends of the valve body, a valve element assembly is arranged in the valve body, at least two pressure assemblies are further installed on the peripheral side of the valve body, and the pressure assemblies are connected with the connecting flanges; the pressure assembly comprises a supporting block, an air chamber is formed in the supporting block, the air chamber is communicated with the interior of the valve body through a water cavity, and an ejection block and an extrusion block are arranged in the air chamber in a sliding mode. And the top block extrudes the bolt to enable the threads of the bolt to be meshed more tightly, so that the bolt is not prone to falling off, and the situation that the connecting flange and the water pipe fall off due to large change of opening and closing water pressure of the valve is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of valves, and in particular relates to a stably connected HVAC valve. Background Art

[0002] The HVAC regulating valve is a device used to regulate the flow of fluid media such as water and steam. When the valve is in use, a large water pressure change will occur in the process of closing and opening the valve. The water pressure change will cause the valve and the water pipe to shift relative to each other, and then the connecting bolts will loosen under the action of this displacement, causing the valve to separate from the water pipe. Utility Model Content

[0003] The utility model aims at the deficiencies of the prior art and provides a HVAC valve with a stable connection.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a HVAC valve with stable connection, comprising a hollow valve body, characterized in that: symmetrically arranged connecting flanges are fixed at both ends of the valve body, a valve core assembly is arranged in the valve body, and at least two pressure assemblies are also installed on the outer peripheral side of the valve body, and the pressure assemblies are connected to the connecting flanges;

[0005] The pressure assembly includes a support block, an air chamber is provided inside the support block, the air chamber is connected with the inside of the valve body through a water cavity, a top block and an extrusion block are slidably provided inside the air chamber, and the top block and the extrusion block are completely sealed.

[0006] Optionally, at least two thread grooves are formed on an end surface of the connecting flange away from the valve body, the thread grooves correspond to the air chambers one by one and are interconnected, and a bolt is threadedly connected in each thread groove.

[0007] Optionally, the top block is divided into two parts, a large cylindrical part and a small cylindrical part, wherein the large cylindrical part is located in the air chamber, and the small cylindrical part extends into the threaded groove and abuts against the bolt.

[0008] Optionally, the valve core assembly in the valve body includes a valve core located at the center of the valve body, a valve stem is fixed on the valve core, the valve stem extends to the outside, and a handle is installed on the outside part of the valve stem.

[0009] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. Due to the setting of the pressure component, when the water pressure in the valve increases through the setting of the top block and the extrusion block, the air in the air chamber will be compressed through the extrusion block, and the bolts will be squeezed by the top block to make the thread teeth of the bolts bite each other more tightly, making it difficult for the bolts to fall off, thereby avoiding the connection flange and the water pipe from falling off due to the large change of water pressure when the valve is opened and closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the utility model.

[0012] Figure 2 It is the front view of the utility model.

[0013] Figure 3 For this utility model Figure 2 Cross-sectional view along the AA direction.

[0014] 10. Valve body; 11. Connecting flange; 12. Bolts; 13. Valve stem; 14. Handle; 15. Support block; 16. Air chamber; 17. Threaded groove; 18. Top block; 19. Extrusion block; 20. Valve core. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0016] As shown in Figures 1-3, a stably connected HVAC valve includes a hollow valve body 10, symmetrically arranged connecting flanges 11 are fixed at both ends of the valve body 10, a valve core assembly is arranged in the valve body 10, the valve core assembly in the valve body 10 includes a valve core 20 located at the center of the valve body 10, a valve stem 13 is fixed on the valve core 20, the valve stem 13 extends to the outside, a handle 14 is installed on the outer part of the valve stem 13, at least two pressure assemblies are also installed on the outer peripheral side of the valve body 10, the pressure assembly is connected to the connecting flange 11, the pressure assembly includes a support block 15, an air chamber 16 is opened inside the support block 15, the air chamber 16 is connected to the inside of the valve body 10 through a water cavity, a top block 18 and an extrusion block 19 are slidably provided in the air chamber 16, and the top block 18 and the extrusion block 19 are completely sealed.

[0017] At least two thread grooves 17 are formed on the end surface of the connecting flange 11 away from the valve body 10. The thread grooves 17 correspond to the air chambers 16 one by one and are interconnected. A bolt 12 is threadedly connected in each thread groove 17. The top block 18 is divided into two parts, a large cylindrical part and a small cylindrical part. The large cylindrical part is located in the air chamber 16, and the small cylindrical part extends into the thread groove 17 and abuts against the bolt 12.

[0018] When in use, when installing the valve, the valve body 10 is fixed to the pipeline by the bolt 12. After the bolt 12 is screwed on, it will abut against the top block 18 to compress the air in the air chamber 16. When the valve is closed, the pressure of the water flow in the valve body 10 increases, and the water pressure acts on the extrusion block 19, which can drive the extrusion block 19 to approach the top block 18, thereby further compressing the air in the air chamber 16. The reaction force generated by the air compression pushes the top block 18 to abut against the bolt 12, so that the threads of the bolt 12 bite each other more tightly, making it difficult for the bolt 12 to fall off, thereby preventing the connection flange 11 from falling off from the water pipe due to large changes in water pressure when opening and closing the valve.

[0019] Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A HVAC valve with a stable connection, comprising a valve body (10) arranged in a hollow manner, characterized in that: The two ends of the valve body (10) are fixed with symmetrically arranged connecting flanges (11), a valve core assembly is arranged inside the valve body (10), and at least two pressure assemblies are also installed on the outer peripheral side of the valve body (10), and the pressure assemblies are connected to the connecting flanges (11); The pressure assembly comprises a support block (15), an air chamber (16) is provided inside the support block (15), the air chamber (16) is connected to the inside of the valve body (10) through a water cavity, a top block (18) and an extrusion block (19) are slidably provided inside the air chamber (16), and the top block (18) and the extrusion block (19) are completely sealed.

2. A stably connected HVAC valve according to claim 1, characterized in that: At least two thread grooves (17) are formed on an end surface of the connecting flange (11) away from the valve body (10), the thread grooves (17) correspond to the air chambers (16) one by one and are interconnected, and a bolt (12) is threadedly connected in each thread groove (17).

3. A stably connected HVAC valve according to claim 2, characterized in that: The top block (18) is divided into two parts: a large cylindrical part and a small cylindrical part, wherein the large cylindrical part is located in the air chamber (16), and the small cylindrical part extends into the thread groove (17) and abuts against the bolt (12).

4. A stably connected HVAC valve according to claim 1, characterized in that: The valve core assembly in the valve body (10) comprises a valve core (20) located at the center of the valve body (10), a valve stem (13) is fixed on the valve core (20), the valve stem (13) extends to the outside, and a handle (14) is installed on the outside part of the valve stem (13).

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