Check valve with anti-freezing effect

Abstract

The utility model relates to the technical field of check valves, in particular to a check valve with an anti-freezing effect, which comprises a valve body, a high platform is communicated with the upper end of the middle of the valve body, a sleeve is mounted at the upper end of the high platform through a flange, and a heating mechanism is arranged in the sleeve. A non-return mechanism is arranged between the valve body and the high platform, and guide mechanisms are arranged on the two sides of the non-return mechanism. The temperature sensor can monitor the temperature around the sleeve in real time, when the temperature sensor detects that the temperature is lower than the set anti-freezing temperature, the temperature sensor can send a signal to the heating rod, the heating rod starts to work and generate heat after receiving the signal, the heat is transmitted to the sleeve and components around the sleeve through the ceramic column, and therefore the sleeve is protected. The ceramic columns have good thermal conductivity and insulativity, heat can be effectively transferred, and the electrical safety of the heating rod can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a check valve with an antifreeze effect. Background Art

[0002] In many fluid delivery systems, check valves are an indispensable and important component. The main function of a check valve is to allow fluid to flow freely in one direction and prevent the flow of fluid in the opposite direction, thereby protecting the pipeline system from the impact of reverse fluid and ensuring the normal operation of the system.

[0003] In the prior art, the fluid inside a traditional check valve is easily frozen in a cold environment. When the fluid freezes, on the one hand, the check valve cannot work properly because the frozen fluid may hinder the normal movement of the valve disc, causing the check valve to lose its non-return function or completely block the pipeline; on the other hand, since water expands in volume when it freezes, this expansion force may cause damage to the valve body, valve disc and other components of the check valve, shortening the service life of the check valve, increasing maintenance costs, and may even cause failure of the entire fluid delivery system. Utility Model Content

[0004] The purpose of the utility model is to provide a check valve with an antifreeze effect to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A check valve with antifreeze effect, comprising

[0007] A valve body, wherein the upper middle end of the valve body is connected to the platform, a sleeve is installed at the upper end of the platform through a flange, and a heating mechanism is arranged inside the sleeve;

[0008] A non-return mechanism is arranged between the valve body and the high platform, and guide mechanisms are arranged on both sides of the non-return mechanism.

[0009] Preferably, the check mechanism includes a partition, which is arranged below the middle portion of the inner side of the valve body, a flow channel 1 is arranged between the valve body and the left side of the partition, and a flow channel 2 is arranged between the valve body and the right side of the partition;

[0010] Preferably, the non-return mechanism further comprises a sealing member, the sealing member is fixedly mounted in the middle of the inner side of the platform, a movable sleeve is movably connected in the middle of the sealing member, a non-return disc is arranged at one end of the movable sleeve close to the valve body, a spring is arranged between the non-return disc and the sealing member and outside the movable sleeve, and a diaphragm is arranged between the outer side of the upper end of the non-return disc and the inner wall of the platform;

[0011] Preferably, the guide mechanism comprises a guide rail, which is symmetrically arranged at both ends of the inner wall of the platform, and sliders movably connected to the guide rail are arranged at both ends of the middle part of the movable sleeve;

[0012] Preferably, the heating mechanism comprises a heating rod, which is fixedly mounted in the middle of the upper end of the sleeve, a temperature sensor electrically connected to the heating rod is arranged outside the upper end of the sleeve, and a ceramic column movably connected to the movable sleeve is arranged on the outer wall of the heating rod;

[0013] Preferably, a pressure relief valve is connected to the right side of the sleeve.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] A check valve with an antifreeze effect. The temperature sensor monitors the temperature around the sleeve in real time. When the temperature sensor detects that the temperature is lower than the set antifreeze temperature, it sends a signal to the heating rod. After receiving the signal, the heating rod starts to work and generates heat. The heat is transferred to the sleeve and its surrounding components through the ceramic column. The ceramic column has good thermal conductivity and insulation, which can not only effectively transfer heat but also ensure the electrical safety of the heating rod.

[0016] This antifreeze check valve has a heat-resistant effect. During the heating process, the fluid may expand due to heat, causing the pressure to rise. When the pressure rises to a certain level, the pressure relief valve will automatically open to release the excessive pressure to ensure the safety of the valve body and its internal components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall main structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 3 For the utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0020] Figure 4 For the utility model Figure 2 Enlarged schematic diagram of point B in the middle.

[0021] In the figure: 1. valve body; 2. platform; 3. flange; 4. sleeve; 5. partition; 6. flow channel 1; 7. flow channel 2; 8. sealing element; 9. movable sleeve; 10. check disc; 11. spring; 12. diaphragm; 13. guide rail; 14. slider; 15. heating rod; 16. temperature sensor; 17. ceramic column; 18. pressure relief valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-4 As shown, a technical solution provided by the utility model:

[0024] A check valve with an antifreeze effect comprises a valve body 1, wherein the middle upper end of the valve body 1 is connected to a platform 2, a sleeve 4 is installed at the upper end of the platform 2 through a flange 3, a heating mechanism is arranged inside the sleeve 4, the heating mechanism comprises a heating rod 15, the heating rod 15 is fixedly installed in the middle of the upper end of the sleeve 4, a temperature sensor 16 electrically connected to the heating rod 15 is arranged outside the upper end of the sleeve 4, a ceramic column 17 movably connected to a movable sleeve 9 is arranged on the outer wall of the heating rod 15, and a pressure relief valve 18 is connected to the right side of the sleeve 4; a check mechanism is arranged between the valve body 1 and the platform 2, the check mechanism comprises a partition 5, the partition 5 is arranged at the lower middle part of the inner side of the valve body 1, and a pressure relief valve 18 is connected to the right side of the sleeve 4; a check mechanism is arranged between the valve body 1 and the platform 2, the check mechanism comprises a partition 5, the partition 5 is arranged at the lower middle part of the inner side of the valve body 1, and a pressure relief valve 18 is connected to the left side of the valve body 1 and the partition 5. A flow channel 1 6 is arranged between the valve body 1 and the right side of the partition plate 5, a flow channel 2 7 is arranged between the valve body 1 and the partition plate 5, the check mechanism also includes a sealing member 8, the sealing member 8 is fixedly installed in the middle of the inner side of the high platform 2, a movable sleeve 9 is movably connected in the middle of the sealing member 8, a check disc 10 is arranged at one end of the movable sleeve 9 close to the valve body 1, a spring 11 is arranged between the check disc 10 and the sealing member 8 and outside the movable sleeve 9, a diaphragm 12 is arranged between the upper end of the check disc 10 and the inner wall of the high platform 2, a guide mechanism is arranged on both sides of the check mechanism, the guide mechanism includes a guide rail 13, the guide rails 13 are symmetrically arranged at both ends of the inner wall of the high platform 2, and sliders 14 movably connected to the guide rail 13 are arranged at both ends of the middle of the movable sleeve 9;

[0025] In this embodiment, the temperature sensor 16 monitors the temperature around the sleeve 4 in real time. When the temperature sensor 16 detects that the temperature is lower than the set antifreeze temperature, it sends a signal to the heating rod 15. After receiving the signal, the heating rod 15 starts to work and generates heat. The heat is transferred to the sleeve 4 and the surrounding components through the ceramic column 17. The ceramic column 17 has good thermal conductivity and insulation, which can not only effectively transfer heat but also ensure the electrical safety of the heating rod 15.

[0026] Furthermore, during the heating process, the fluid may expand due to heat and cause the pressure to increase. When the pressure increases to a certain level, the pressure relief valve 18 will automatically open to release the excessive pressure to ensure the safety of the valve body 1 and its internal components.

[0027] Working principle: When the fluid flows into the valve body 1 from the flow channel 1 6, the pressure of the fluid will push the check disk 10 to move upward. Since the movable sleeve 9 is movably connected with the sealing member 8, and the check disk 10 is connected to the end of the movable sleeve 9 close to the valve body 1, under the action of the fluid pressure, the check disk 10 overcomes the elastic force of the spring 11 and moves upward. At this time, the fluid will smoothly pass through the flow channel 1 6 and enter the flow channel 2 7. When the fluid tries to flow in reverse from the flow channel 2 7, the fluid pressure will act on the top of the check disk 10. Under the combined action of the elastic force of the spring 11, its own gravity and the fluid pressure, the check disk 10 is tightly pressed between the partition 5 and the upper end of the flow channel 1 6, thereby preventing the reverse flow of the fluid. The diaphragm 12 plays an auxiliary sealing role in this process. Prevent fluid from leaking from between the check disk 10 and the inner wall of the platform 2; the temperature sensor 16 monitors the temperature around the sleeve 4 in real time. When the temperature sensor 16 detects that the temperature is lower than the set antifreeze temperature, it will send a signal to the heating rod 15. After receiving the signal, the heating rod 15 starts to work and generates heat. The heat is transferred to the sleeve 4 and its surrounding components through the ceramic column 17. The ceramic column 17 has good thermal conductivity and insulation, which can not only effectively transfer heat but also ensure the electrical safety of the heating rod 15. During the heating process, the fluid may expand due to heat and cause pressure to increase. When the pressure rises to a certain level, the pressure relief valve 18 will automatically open to release the excessive pressure to ensure the safety of the valve body 1 and its internal components.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A check valve with antifreeze effect, characterized in that: The invention comprises a valve body (1), wherein the upper middle end of the valve body (1) is connected to a platform (2), a sleeve (4) is mounted on the upper end of the platform (2) via a flange (3), and a heating mechanism is arranged inside the sleeve (4); a check mechanism is arranged between the valve body (1) and the platform (2), and guide mechanisms are arranged on both sides of the check mechanism.

2. A check valve with antifreeze effect according to claim 1, characterized in that: The non-return mechanism comprises a partition (5), the partition (5) being arranged at the lower middle portion of the inner side of the valve body (1), a flow channel 1 (6) being arranged between the valve body (1) and the left side of the partition (5), and a flow channel 2 (7) being arranged between the valve body (1) and the right side of the partition (5).

3. A check valve with antifreeze effect according to claim 2, characterized in that: The non-return mechanism further comprises a sealing member (8), the sealing member (8) being fixedly mounted in the middle of the inner side of the platform (2), a movable sleeve (9) being movably connected to the middle of the sealing member (8), a non-return disc (10) being arranged at one end of the movable sleeve (9) close to the valve body (1), a spring (11) being arranged between the non-return disc (10) and the sealing member (8) and outside the movable sleeve (9), and a diaphragm (12) being arranged between the outer portion of the upper end of the non-return disc (10) and the inner wall of the platform (2).

4. A check valve with antifreeze effect according to claim 3, characterized in that: The guide mechanism comprises a guide rail (13) which is symmetrically arranged at both ends of the inner wall of the platform (2), and sliding blocks (14) movably connected to the guide rail (13) are arranged at both ends of the middle part of the movable sleeve (9).

5. A check valve with antifreeze effect according to claim 4, characterized in that: The heating mechanism comprises a heating rod (15), the heating rod (15) is fixedly mounted in the middle of the upper end of the sleeve (4), a temperature sensor (16) electrically connected to the heating rod (15) is arranged outside the upper end of the sleeve (4), and a ceramic column (17) movably connected to the movable sleeve (9) is arranged on the outer wall of the heating rod (15).

6. A check valve with antifreeze effect according to claim 5, characterized in that: A pressure relief valve (18) is connected to the right side of the sleeve (4).

Images