Valve for low-temperature environment

Abstract

The valve used in the low-temperature environment comprises a valve body, a front box body and a rear box body, the front box body and the rear box body are detachably and fixedly connected through a fixing mechanism to form a heat preservation box, the valve body is located in the heat preservation box, and the valve body and the heat preservation box are clamped and fixed through a clamping mechanism. A controller is arranged on the front end face of the front box body, a heating plate is arranged on the front side face in the front box body, and a temperature sensor is arranged on the side wall in the front box body. The clamping mechanism is arranged in the heat preservation box, the inner walls of the upper V-shaped frame and the lower V-shaped frame arranged in the clamping mechanism are attached to the outer walls of the pipelines, the rear box body and the pipelines of different diameters can be clamped and fixed, and therefore the heat preservation box can be suitable for valves of different specifications.

Description

Technical Field

[0001] This utility model relates to a valve for use in low-temperature environments, and belongs to the field of valve technology. Background Technology

[0002] A valve is a mechanical device used to control the flow, pressure, volume, and direction of fluids (such as liquids, gases, powders, etc.), and it is widely used in many fields such as industry, construction, water supply and drainage, and energy. When valves are used in low-temperature environments, once the valve is closed as a control device for water flow, it is necessary to insulate the valve to prevent it from freezing and cracking.

[0003] Patent CN222577499U discloses a valve for low-temperature environments. By winding a heating wire around the valve, when the ambient temperature is below the freezing point of water, a temperature sensor sends a signal to a controller. The controller then energizes the heating wire, raising the temperature inside the installation space. This ensures that the water inside the valve will not freeze in low external temperatures, guaranteeing normal valve operation and preventing it from cracking. Insulation filler is filled into the installation space through filling ports on the first and second housings. The insulation filler and heating wire work together to create a heating layer for the valve, further ensuring its integrity and allowing for continued use.

[0004] While the aforementioned patents can protect valves from freezing and cracking by heating them with a heating wire, they cannot be installed on valves of different sizes. Therefore, this utility model proposes a valve for use in low-temperature environments. Utility Model Content

[0005] Based on the above background, the purpose of this utility model is to provide a valve for low-temperature environments, thereby solving the problems in the prior art.

[0006] This utility model provides the following technical solution:

[0007] A valve for low-temperature environments includes a valve body, a front housing, and a rear housing. The front and rear housings are detachably and fixedly connected by a fixing mechanism to form an insulation box. The valve body is located inside the insulation box and is clamped and fixed to the insulation box by a clamping mechanism. A controller is provided on the front end face of the front housing, a heating plate is provided on the front side inside the front housing, and a temperature sensor is provided on the inner side wall of the front housing. The heating plate and the temperature sensor are both electrically connected to an external power source through the controller. Both ends of the valve body are flanged and connected to pipes. The top of the insulation box has a first through hole, and both sides of the insulation box have second through holes. The second through holes are coaxial and the pipes pass through the second through holes. The valve stem of the valve body passes through the first through hole, and a handwheel is installed on the valve stem. The handwheel is located at the top of the insulation box.

[0008] Preferably, the fixing mechanism includes two sets of fixing blocks, each set of fixing blocks being fixedly connected to the side of the front box near the rear box. Each side of the rear box near the front box is provided with a set of insert blocks, each insert block having a slot. The end face of the fixing block near the rear box is provided with a limiting block, each limiting block having a limiting hole. The limiting block is inserted into the slot. The insert block has a threaded hole, and a limiting bolt is threadedly connected to the threaded hole. The threaded portion of the limiting bolt passes through the limiting hole.

[0009] Preferably, the clamping mechanism includes a set of L-shaped fixing frames fixed to the bottom of the rear box, and each L-shaped fixing frame is provided with a lower V-shaped frame at the top, with the inner wall of the lower V-shaped frame fitting against the outer wall of the pipe.

[0010] Preferably, the clamping mechanism further includes a set of adjusting screws, which are threadedly connected to the top of the rear housing. The bottom of the adjusting screws is rotatably connected to a mounting plate, and the bottom of the mounting plate is provided with an upper V-shaped frame. The inner wall of the upper V-shaped frame fits against the outer wall of the pipe, and the upper V-shaped frame is located outside the lower V-shaped frame.

[0011] Preferably, a set of sliding grooves are provided on the inner wall of the rear box, and the sliding grooves are in sliding engagement with the mounting plate.

[0012] Preferably, sealing elements are provided on the adjacent surfaces of the front and rear housings, and the sealing elements on the front and rear housings abut against each other.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This utility model discloses a valve for low-temperature environments. By setting a clamping mechanism inside the insulation box, the inner walls of the upper and lower V-shaped frames in the clamping mechanism fit against the outer wall of the pipe, which allows the rear box to be clamped and fixed between pipes of different diameters, thereby making the insulation box suitable for valves of different specifications.

[0015] This utility model discloses a valve for low-temperature environments. By setting an adjusting screw, rotating the adjusting screw can drive the mounting plate to slide up and down in the slide groove, thereby driving the upper V-shaped frame to move closer to or away from the lower V-shaped frame, which facilitates the clamping and fixing or disassembly of the rear box and the pipeline, and thus facilitates the disassembly or installation of the insulation box and the valve body. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the insulated box of this utility model;

[0019] Figure 3 This is a schematic diagram of the front box structure of this utility model.

[0020] In the diagram: 1. Valve body; 2. Front housing; 3. Rear housing; 4. Controller; 5. Heating plate; 6. Temperature sensor; 7. Pipeline; 8. First through hole; 9. Second through hole; 10. Handwheel; 11. Fixing block; 12. Insert block; 13. Slot; 14. Limiting block; 15. Limiting hole; 16. Threaded hole; 17. Limiting bolt; 18. L-shaped fixing bracket; 19. Lower V-shaped bracket; 20. Adjusting screw; 21. Mounting plate; 22. Upper V-shaped bracket; 23. Slide groove; 24. Seal. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0022] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the field. Unless otherwise specified, the methods in the following embodiments are conventional methods in the field. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0023] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following detailed description, many specific details are set forth to facilitate explanation and provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.

[0024] like Figures 1-3 As shown, a valve for low-temperature environments includes a valve body 1, a front housing 2, and a rear housing 3. The front housing 2 and the rear housing 3 are detachably and fixedly connected by a fixing mechanism to form an insulation box. The valve body 1 is located inside the insulation box and is clamped and fixed to the insulation box by a clamping mechanism. A controller 4 is provided on the front end face of the front housing 2. A heating plate 5 is provided on the front side inside the front housing 2. A temperature sensor 6 is provided on the side wall inside the front housing 2. Both the heating plate 5 and the temperature sensor 6 are electrically connected to an external power source through the controller 4. Both ends of the valve body 1 are flanged and connected to pipes 7. The top of the insulation box has a first through hole 8. Both sides of the insulation box have second through holes 9. The second through holes 9 are coaxial and the pipes 7 pass through the second through holes 9. The valve stem of the valve body 1 passes through the first through hole 8 and a handwheel 10 is installed on the valve stem. The handwheel 10 is located at the top of the insulation box.

[0025] In the above technical solution, a temperature sensor 6 is set to detect the temperature. When the temperature is lower than the temperature at which water freezes, the temperature sensor 6 sends a signal to the controller 4. The controller 4 controls the heating plate 5 to connect to an external power source. The heating plate 5 heats up to heat the inside of the insulation box, preventing the water inside the valve from freezing and cracking when the valve is closed, thus ensuring the safety of the valve. By setting a clamping mechanism inside the insulation box, the inner walls of the upper V-shaped frame 22 and the lower V-shaped frame 19 in the clamping mechanism fit against the outer wall of the pipe 7, so that the rear box 3 can be clamped and fixed between pipes 7 of different diameters, thereby making the insulation box suitable for valves of different specifications.

[0026] In this utility model, the fixing mechanism includes two sets of fixing blocks 11. Each set of fixing blocks 11 is fixedly connected to the side of the front housing 2 near the rear housing 3. A set of insert blocks 12 is provided on both sides of the rear housing 3 near the front housing 2. The insert blocks 12 are provided with slots 13. A limiting block 14 is provided on the end face of the fixing block 11 near the rear housing 3. The limiting block 14 is provided with limiting holes 15. The limiting block 14 is inserted into the slots 13. The insert blocks 12 are provided with threaded holes 16. A limiting bolt 17 is threadedly connected to the threaded holes 16. The screw part of the limiting bolt 17 passes through the limiting hole 15.

[0027] In the above technical solution, by setting a fixing mechanism, the limiting bolt 17 is threaded through the limiting hole 15 when it is threadedly connected to the threaded hole 16, thereby limiting the limiting block 14, and thus fixing the front box 2 and the rear box 3 to form an insulated box.

[0028] In this utility model, the clamping mechanism includes a set of L-shaped fixing brackets 18 fixed to the bottom of the rear housing 3. Each L-shaped fixing bracket 18 is provided with a lower V-shaped bracket 19 at its top. The inner wall of the lower V-shaped bracket 19 is in contact with the outer wall of the pipe 7. The clamping mechanism also includes a set of adjusting screws 20. The set of adjusting screws 20 is threadedly connected to the top of the rear housing 3. The bottom of the adjusting screws 20 is rotatably connected to a mounting plate 21. The bottom of the mounting plate 21 is provided with an upper V-shaped bracket 22. The inner wall of the upper V-shaped bracket 22 is in contact with the outer wall of the pipe 7. The upper V-shaped bracket 22 is located outside the lower V-shaped bracket 19.

[0029] In the above technical solution, the clamping mechanism can be used to clamp pipes 7 of different diameters by using the upper V-shaped frame 22 and the lower V-shaped frame 19. By setting the adjusting screw 20, rotating the adjusting screw 20 can drive the mounting plate 21 to slide up and down in the slide groove 23, thereby driving the upper V-shaped frame 22 to move closer to or away from the lower V-shaped frame 19, which facilitates the clamping, fixing or disassembly of the rear box 3 and the pipe 7, thereby facilitating the disassembly or installation of the insulation box and the valve body 1.

[0030] In this utility model, a set of sliding grooves 23 are provided on the inner wall of the rear box 3, and the sliding grooves 23 are slidably engaged with the mounting plate 21.

[0031] In this utility model, sealing elements 24 are provided on the similar surfaces of the front box 2 and the rear box 3, and the sealing elements 24 on the front box 2 and the rear box 3 abut against each other.

[0032] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A valve for use in low-temperature environments, characterized in that: The device includes a valve body (1), a front housing (2), and a rear housing (3). The front housing (2) and the rear housing (3) are detachably and fixedly connected by a fixing mechanism to form an insulation box. The valve body (1) is located inside the insulation box and is clamped and fixed to the insulation box by a clamping mechanism. A controller (4) is provided on the front end face of the front housing (2). A heating plate (5) is provided on the front side inside the front housing (2). A temperature sensor (6) is provided on the side wall inside the front housing (2). The plate (5) and temperature sensor (6) are both electrically connected to an external power source through the controller (4). Both ends of the valve body (1) are connected to pipes (7) by flanges. The top of the insulation box is provided with a first through hole (8). Both sides of the insulation box are provided with second through holes (9). The second through holes (9) are coaxial. The pipe (7) passes through the second through hole (9). The valve stem of the valve body (1) passes through the first through hole (8) and a handwheel (10) is installed on the valve stem. The handwheel (10) is located at the top of the insulation box.

2. A valve for low-temperature environments according to claim 1, characterized in that: The fixing mechanism includes two sets of fixing blocks (11). Each set of fixing blocks (11) is fixedly connected to the side of the front box (2) near the rear box (3). A set of insert blocks (12) is provided on both sides of the rear box (3) near the front box (2). The insert blocks (12) are provided with slots (13). The end face of the fixing block (11) near the rear box (3) is provided with a limiting block (14). The limiting block (14) is provided with a limiting hole (15). The limiting block (14) is inserted into the slot (13). The insert blocks (12) are provided with threaded holes (16). The threaded holes (16) are threaded with limiting bolts (17). The screw part of the limiting bolts (17) passes through the limiting holes (15).

3. A valve for low-temperature environments according to claim 2, characterized in that: The clamping mechanism includes a set of L-shaped fixing frames (18) fixed to the bottom of the rear box (3). The top of each L-shaped fixing frame (18) is provided with a lower V-shaped frame (19), and the inner wall of the lower V-shaped frame (19) is in contact with the outer wall of the pipe (7).

4. A valve for low-temperature environments according to claim 3, characterized in that: The clamping mechanism also includes a set of adjusting screws (20), which are threadedly connected to the top of the rear housing (3). The bottom of the adjusting screws (20) is rotatably connected to a mounting plate (21). The bottom of the mounting plate (21) is provided with an upper V-shaped frame (22). The inner wall of the upper V-shaped frame (22) is in contact with the outer wall of the pipe (7). The upper V-shaped frame (22) is located outside the lower V-shaped frame (19).

5. A valve for low-temperature environments according to claim 4, characterized in that: A set of sliding grooves (23) are provided on the inner wall of the rear box (3), and the sliding grooves (23) are slidably engaged with the mounting plate (21).

6. A valve for low-temperature environments according to claim 5, characterized in that: The front box (2) and the rear box (3) are provided with sealing elements (24) on their adjacent surfaces, and the sealing elements (24) on the front box (2) and the rear box (3) abut against each other.

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