Frost valve
The design of the antifreeze valve body structure solves the problems of reduced sealing pressure and loss of toughness of non-metallic materials at low temperatures, realizes automatic adjustment of the medium and stable operation of the device, avoids freezing damage and stress relaxation, and improves operating efficiency.
Patent Information
- Application Number
- CN202422739340.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-11
AI Technical Summary
The non-metallic materials of existing antifreeze valves become hard and brittle in low-temperature environments, resulting in a decrease in the sealing pressure ratio and an inability to seal. They also lose toughness at cryogenic temperatures, resulting in problems such as cold flow and stress relaxation.
The antifreeze valve body structure is adopted, including anti-vacuum plug, O-ring, self-closing valve, universal temperature-resistant package and other components. It automatically opens at low temperature through the temperature sensing element to allow the medium to flow out to avoid freezing damage. It restores the seal at high temperature and uses the load spring and check spring to adjust the medium flow to prevent cold flow and stress relaxation.
It realizes the circulation of the medium in low temperature environment and the automatic adjustment of the seal in high temperature environment, avoids freezing damage and stress relaxation, and improves the operation stability and efficiency of the device.
Smart Images
Figure CN223483534U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of valve technology, and in particular to antifreeze valves. Background Technology
[0002] Antifreeze valves are devices with important protective functions. They are mainly used to prevent pipelines and related equipment from being damaged by low temperatures in cold environments. They are widely used in many fields such as water supply and drainage systems, fire protection systems, and irrigation systems, playing a key role in ensuring the safe and stable operation of these systems in low-temperature environments.
[0003] The main function of an antifreeze valve is to protect pipes and related equipment in cold environments. When the temperature drops to a critical value that would cause the water in the pipes to freeze, the antifreeze valve can automatically sense and open to discharge the water in the pipes in time, preventing the water from damaging the pipes and equipment due to the expansion of the ice.
[0004] In the prior art, when antifreeze valves are used in low-temperature environments, the shrinkage of non-metallic materials differs significantly from that of metallic materials, resulting in a decrease in sealing pressure and a failure to seal. In addition, non-metallic materials become hard and brittle at cryogenic temperatures, losing their toughness and leading to cold flow and stress relaxation. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an antifreeze valve, which aims to improve the problem in the prior art that non-metallic materials become hard and brittle at deep cold temperatures, lose their toughness, and cause cold flow and stress relaxation.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an antifreeze valve, comprising an antifreeze valve body, an anti-vacuum plug installed at the top of the antifreeze valve body, a first O-ring provided on both the left and right sides of the bottom of the anti-vacuum plug, an anti-vacuum valve core installed in the middle of the first O-ring, an anti-vacuum valve sealing gasket installed at the bottom of the anti-vacuum plug, a second O-ring provided on the side of the bottom of the two first O-rings that are far apart, an anti-vacuum valve connector provided at the bottom of the second O-ring, a self-closing valve installed in the upper middle part of the antifreeze valve body, a third O-ring provided on both the left and right sides of the outer side of the self-closing valve, a sixth O-ring installed on both the left and right sides of the middle part of the antifreeze valve body, and a check spring provided on the left side of the right side of the sixth O-ring.
[0007] As a further description of the above technical solution:
[0008] An M7 plug nut is provided at the bottom of the antifreeze valve body, and a nut ring is installed on the outside of the M7 plug nut. An adapter is provided at the middle of the outside of the antifreeze valve body, and an antifreeze valve one is installed at the bottom of the adapter. An antifreeze valve two is provided at the bottom of the antifreeze valve one.
[0009] As a further description of the above technical solution:
[0010] The antifreeze valve body has threads on both the left and right ends of the middle section, and a water temperature sensing valve core is installed on the lower middle part of the outer side of the antifreeze valve body.
[0011] As a further description of the above technical solution:
[0012] The antifreeze valve has an anaerobic adhesive in the middle, and a fifth O-ring is installed on both the left and right sides of the bottom of the valve body.
[0013] As a further description of the above technical solution:
[0014] A water-stop rod is installed in the middle of the sixth O-ring. A fourth O-ring is provided on both the left and right ends of the lower middle part of the inner side of the antifreeze valve body. A load spring is installed on the adjacent side of the two fourth O-rings. A positioning clip is installed at the bottom of the load spring. A heat-resistant bulb is provided in the middle of the positioning clip.
[0015] As a further description of the above technical solution:
[0016] The bottom of the universal heat-resistant bag is equipped with a water temperature sensor, the top of the water temperature sensor is provided with a movable seat, the bottom of the movable seat is equipped with a setting spring, the inside of the setting spring is equipped with a fixing nut, and the bottom of the fixing nut is equipped with an antifreeze valve sealing gasket.
[0017] This utility model has the following beneficial effects:
[0018] 1. In this utility model, when an antifreeze valve is installed inside a pipeline, and the temperature drops to 3°C or below, the temperature sensing element activates the self-closing valve. The self-closing valve stem contracts, allowing the medium to flow in and pass through the heat-resistant bulb. The heat-resistant bulb contracts, and the antifreeze valve sealing gasket moves upward, allowing the medium to flow out through the gap between the M7 plug nut and the valve, preventing freezing damage. When the temperature rises to 4°C or above, the self-closing valve stem extends, the heat-resistant bulb returns to normal, the medium stops flowing, and the device returns to normal, avoiding cold flow and stress relaxation.
[0019] 2. In this utility model, when the temperature changes, the positions of antifreeze valve one and antifreeze valve two can be moved by the contraction and rebound of the load spring, the setting spring and the anti-reverse spring, thereby allowing the medium to flow or not flow, further protecting the normal operation of the device. Attached Figure Description
[0020] Figure 1 This is a front view of the antifreeze valve proposed in this utility model;
[0021] Figure 2 This is a side view of the antifreeze valve proposed in this utility model;
[0022] Figure 3 This is a partial structural cross-sectional view of the antifreeze valve proposed in this utility model.
[0023] Legend:
[0024] 1. Anti-vacuum plug; 2. First O-ring; 3. Anti-vacuum valve core; 4. Anti-vacuum valve sealing gasket; 5. Second O-ring; 6. Anti-vacuum valve connector; 7. Anti-freeze valve body; 8. Third O-ring; 9. Water stop rod; 10. Adapter; 11. Fourth O-ring; 12. Anti-freeze valve one; 13. Universal heat-resistant bulb; 14. Anti-freeze valve two; 15. Movable seat; 16. Fixing nut; 17. Anti-freeze valve sealing gasket; 18. Fifth O-ring; 19. M7 plug nut; 20. Setting spring; 21. Positioning clip; 22. Load spring; 23. Check spring; 24. Anaerobic adhesive; 25. Sixth O-ring; 26. Thread; 27. Water temperature sensor one; 28. Water temperature sensor valve core; 29. Nut ring; 30. Self-closing valve. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of an antifreeze valve, including an antifreeze valve body 7. An anti-vacuum plug 1 is installed at the top of the antifreeze valve body 7. First O-rings 2 are provided on both the left and right sides of the bottom of the anti-vacuum plug 1. An anti-vacuum valve core 3 is installed in the middle of the first O-rings 2. An anti-vacuum valve sealing gasket 4 is installed at the bottom of the anti-vacuum plug 1. Second O-rings 5 are provided on the sides of the bottoms of the two first O-rings 2 that are far apart. An anti-vacuum valve connector 6 is provided at the bottom of the second O-rings 5. A self-closing valve 30 is installed in the upper middle part of the antifreeze valve body 7. Third O-rings 8 are provided on both the left and right outer ends of the self-closing valve 30. A sixth O-ring 25 is installed on both the left and right sides of the middle part of the antifreeze valve body 7. A check spring 23 is provided on the left side of the sixth O-ring 25. A water-stop rod 9 is installed in the middle of the sixth O-ring 25. A fourth O-ring 11 is provided on both the left and right ends of the lower middle part of the inner side of the antifreeze valve body 7. A load spring 22 is installed on the adjacent side of the two fourth O-rings 11. A positioning clip 21 is installed at the bottom of the load spring 22. A multi-temperature resistant bulb 13 is provided in the middle of the positioning clip 21. A water temperature sensor 27 is installed at the bottom of the multi-temperature resistant bulb 13. A movable seat 15 is provided on the top of the water temperature sensor 27. A setting spring 20 is installed at the bottom of the movable seat 15. A fixing nut 16 is installed inside the setting spring 20. An antifreeze valve sealing gasket 17 is provided at the bottom of the fixing nut 16.
[0027] Specifically, firstly, the antifreeze valve body 7 needs to be carefully installed inside the pipeline. When the ambient temperature drops to 3 degrees Celsius or lower, the temperature sensing element will detect this change and trigger the valve of the self-closing valve 30, causing its valve stem to contract. This, in turn, lowers the position of the stop rod 9, allowing the medium to flow in from inside the antifreeze valve body 7. The medium flows in and passes through the heat-resistant bulb 13, which contracts. The antifreeze valve sealing gasket 17 moves upward, allowing the medium to flow out through the gap between the M7 plug nut 19 and the bulb. This outflow prevents the medium from freezing and damaging the device. When the ambient temperature rises above 4 degrees Celsius, the valve stem of the self-closing valve 30 will automatically extend. At this time, the valve stem of the self-closing valve 30 will extend, the heat-resistant bulb 13 will return to normal, and the antifreeze valve sealing gasket 17 will return to its original position, preventing the medium from continuing to flow downward. The device returns to normal operation, avoiding cold flow and stress relaxation, and improving the device's working efficiency.
[0028] Reference Figure 1 , Figure 2 and Figure 3The bottom of the antifreeze valve body 7 is provided with an M7 plug nut 19, and a nut ring 29 is installed on the outside of the M7 plug nut 19. An adapter 10 is provided in the middle of the outside of the antifreeze valve body 7. An antifreeze valve one 12 is installed at the bottom of the adapter 10. An antifreeze valve two 14 is provided at the bottom of the antifreeze valve one 12. Threads 26 are provided on both the left and right ends of the middle of the antifreeze valve body 7. A water temperature sensing valve core 28 is installed in the lower middle part of the outside of the antifreeze valve body 7. Anaerobic adhesive 24 is provided in the middle of the antifreeze valve one 12. A fifth O-ring 18 is installed on both the left and right sides of the bottom inside the antifreeze valve body 7.
[0029] Specifically, the installation of the nut ring 29 makes the M7 plug nut 19 more stable, the opening of the thread 26 allows the device to be better installed inside the pipeline, the installation of the water temperature sensing valve core 28 makes the sensing of the medium temperature more accurate, and the installation of the anaerobic adhesive 24 makes the installation of each structure more secure.
[0030] Working principle: First, the antifreeze valve body 7 is installed inside the pipeline. When the temperature drops to 3 degrees Celsius or below, the temperature sensing element is triggered, causing the valve stem of the self-closing valve 30 to contract and the position of the stop rod 9 to drop, allowing the medium to flow in. The medium flows in and passes through the heat-resistant bulb 13, which contracts. The antifreeze valve sealing gasket 17 moves upward, allowing the medium to flow out through the gap between the M7 plug nut 19 and the bulb. The outflow of the medium prevents the medium from freezing and damaging the device. When the temperature exceeds 4 degrees Celsius, the valve stem of the self-closing valve 30 will extend, the heat-resistant bulb 13 will return to normal, and the antifreeze valve sealing gasket 17 will return to its original position, preventing the medium from continuing to flow downward. This allows the device to resume normal operation, avoiding cold flow and stress relaxation, and improving working efficiency.
[0031] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An antifreeze valve, comprising an antifreeze valve body (7), characterized in that: The top of the antifreeze valve body (7) is equipped with an antivacuum plug (1). The bottom left and right sides of the antivacuum plug (1) are provided with first O-rings (2). The middle of the first O-rings (2) is equipped with an antivacuum valve core (3). The bottom of the antivacuum plug (1) is equipped with an antivacuum valve sealing gasket (4). The bottom of the two first O-rings (2) is provided with a second O-ring (5) on the side away from each other. The bottom of the second O-rings (5) is provided with an antivacuum valve connector (6). The upper middle part of the antifreeze valve body (7) is equipped with a self-closing valve (30). The left and right ends of the self-closing valve (30) are provided with a third O-ring (8). The left and right ends of the middle part of the antifreeze valve body (7) are equipped with a sixth O-ring (25). The left side of the right side of the sixth O-ring (25) is provided with a check spring (23).
2. The antifreeze valve according to claim 1, characterized in that: The bottom of the antifreeze valve body (7) is provided with an M7 plug nut (19), and a nut ring (29) is installed on the outside of the M7 plug nut (19). An adapter (10) is provided in the middle of the outside of the antifreeze valve body (7). An antifreeze valve one (12) is installed at the bottom of the adapter (10), and an antifreeze valve two (14) is provided at the bottom of the antifreeze valve one (12).
3. The antifreeze valve according to claim 1, characterized in that: The antifreeze valve body (7) has threads (26) on both the left and right ends of the middle part, and a water temperature sensing valve core (28) is installed on the lower part of the outer side of the antifreeze valve body (7).
4. The antifreeze valve according to claim 2, characterized in that: The antifreeze valve (12) is provided with anaerobic adhesive (24) in the middle, and the antifreeze valve body (7) is provided with a fifth O-ring (18) on both the left and right sides of the bottom of the interior.
5. The antifreeze valve according to claim 1, characterized in that: A water-stop rod (9) is installed in the middle of the sixth O-ring (25). A fourth O-ring (11) is provided on both the left and right ends of the lower middle part of the inner side of the antifreeze valve body (7). A load spring (22) is installed on the adjacent side of the two fourth O-rings (11). A positioning clip (21) is installed at the bottom of the load spring (22). A heat-resistant bulb (13) is provided in the middle of the positioning clip (21).
6. The antifreeze valve according to claim 5, characterized in that: The bottom of the universal heat-resistant bag (13) is equipped with a water temperature sensor (27), the top of the water temperature sensor (27) is provided with a movable seat (15), the bottom of the movable seat (15) is equipped with a setting spring (20), the inside of the setting spring (20) is equipped with a fixing nut (16), and the bottom of the fixing nut (16) is provided with an antifreeze valve sealing gasket (17).