Anti-freezing valve for water storage tank

Abstract

The utility model relates to valve door technical field, concretely is a kind of anti-freezing valve for water storage tank.The utility model includes the valve body in the inner chamber of water storage tank, to prevent the pipe body on the drain pipe outside water storage tank to store water when the valve core on the valve body is closed;Anti-freezing valve or drain pipe is equipped with the drive assembly of driving valve core opening and closing, and the operating part of this drive assembly is located at the outside of water storage tank.The utility model can avoid the ice formation of water storage in drain pipe, ensure that water storage tank can be connected with fire-fighting pipeline quickly at any time under severe cold conditions, and further meet the emergency fire-fighting needs of winter forest fire.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically an antifreeze valve for water storage tanks. Background Technology

[0002] Forests are an important natural resource on Earth, playing an irreplaceable role in maintaining ecological balance, protecting biodiversity, and regulating climate. In forest fire fighting, the timely availability of sufficient water directly affects the efficiency and effectiveness of firefighting operations.

[0003] Forest fire-fighting water storage tanks, as an important component of forest fire prevention systems, typically collect and store natural rainwater to provide a reliable backup water source for fire emergencies. Their structure is described in the text of the applicant's previously filed Chinese patent application, CN222976001U, entitled "A Prefabricated Water Tank."

[0004] To achieve rapid water supply, as described in the cited patents of the prior application, a fire-fighting spare parts box is installed at the bottom of the water storage tank, which contains a drain pipe connecting to the inner cavity of the water storage tank. Because the water storage tank is large and holds a large amount of water, it is not prone to freezing. However, the drain pipe extends outside the water storage tank and has a relatively small diameter, resulting in a smaller water capacity and making it extremely prone to freezing. This leads to blockage of the drain pipe due to ice buildup, preventing water from being drawn. Furthermore, the large temperature difference and frequent periods of low temperatures in mountainous forests exacerbate the blockage. Therefore, based on the aforementioned applications, the applicant is also considering further developing an improved solution to prevent water from freezing inside the drain pipe, ensuring that the water storage tank meets the emergency fire-fighting needs of forest fires in winter. Utility Model Content

[0005] In order to avoid and overcome the technical problems existing in the prior art, this utility model provides an antifreeze valve for water storage tanks, which can prevent water inside the drain pipe from freezing and ensure that the water storage tank can be quickly connected to the fire pipeline at any time under severe cold conditions, thereby meeting the emergency fire-fighting needs of forest fires in winter.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An antifreeze valve for a water storage tank includes a valve body located in the inner cavity of the water storage tank to prevent water from accumulating in a section of the drain pipe located outside the water storage tank when the valve core on the valve body is closed; the antifreeze valve or the drain pipe is equipped with a drive assembly for driving the valve core to open and close, the operating part of the drive assembly being located outside the water storage tank.

[0007] As a further embodiment of this utility model: the drive assembly includes a linkage assembly that connects the operating part and the valve core and enables the two to form a transmission cooperation, and the linkage assembly is disposed in the inner cavity located outside the valve core on the drain pipe.

[0008] As a further embodiment of this utility model: the antifreeze valve is a butterfly valve, and the valve body includes a valve seat coaxially connected with the inner cavity of the drain pipe and a butterfly plate constituting the valve core, which rotates around the radial line of the drain pipe and fits on the valve seat; the linkage assembly includes a connecting rod with one end eccentrically hinged to the butterfly plate, and the other end of the connecting rod is hinged to the driving end of the operating part, and the hinge axes at both ends of the connecting rod are parallel to the radial line.

[0009] As a further embodiment of this utility model: the antifreeze valve is a shut-off valve, and the valve body includes a valve seat coaxially connected to the inner end of the drain pipe and a valve disc constituting the valve core that can slide along the axial direction of the valve seat to block and open the inner end of the valve seat; the linkage assembly includes a connecting rod with both ends respectively hinged to the valve disc and the drive end of the operating part, and the hinge axes at both ends of the connecting rod are parallel to each other.

[0010] As a further embodiment of this utility model: the operating part includes a valve stem that rotates and engages on the pipe body outside the water storage tank or on the outer wall of the water storage tank on the drain pipe. The rotation axis of the valve stem is parallel to the hinge axis of the connecting rod, and the valve stem has an inner end that penetrates into the inner cavity of the drain pipe and an outer end that is distributed outside the drain pipe. The outer end of the valve stem constitutes the operating end of the operating part, and a connecting rod is vertically fixed to the inner end of the valve stem. The outer end of the connecting rod constitutes the driving end that is hinged to the connecting rod. A locking element that can lock the valve stem when the butterfly plate is closed is installed on the water storage tank or the drain pipe.

[0011] As a further embodiment of this utility model: the outer end of the valve stem is bent outward to form an operating rod, and the locking component is a pin or a set screw that is inserted and locked to the locking operating rod on the water tank or drain pipe.

[0012] As a further embodiment of this utility model: the drive assembly includes a linkage assembly that connects the operating part and the valve core to form a transmission cooperation between the two, and the linkage assembly is disposed in the inner cavity of the water storage tank.

[0013] As a further embodiment of this utility model: the antifreeze valve is a gate valve, and the valve body includes a valve seat fixed to the inner wall of the water storage tank and communicating with the inner end of the drain pipe. A gate plate that slides vertically on the valve seat and forms a gate valve structure together with the valve seat is provided. A second rack that is vertically arranged and constitutes the linkage component is fixed on the top of the gate plate. The operating part includes a valve stem that rotates and engages with the water storage tank. The valve stem has an inner end that penetrates into the inner cavity of the water storage tank and an outer end that is distributed outside the water storage tank. The outer end of the valve stem constitutes the operating end of the operating part. A second gear that meshes with the second rack is coaxially fixed to the inner end of the valve stem. A locking element that can lock the valve stem when the gate plate is closed is installed on the water storage tank or the drain pipe.

[0014] As a further embodiment of this utility model: a worm gear is coaxially fixed to the outer end of the valve stem, and the locking element is a worm gear that meshes with the worm gear and is provided on the water tank or drain pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. By placing the antifreeze valve body inside the water tank, the system cleverly utilizes the physical properties of the large volume, high thermal inertia, and resistance to overall freezing of the water inside the tank, providing a non-freezing working environment for the critical valve body. When the valve core closes, it effectively cuts off the drain pipe, isolating the section of the drain pipe exposed to the cold outside environment from the water inside the tank, thus emptying the water in that section of the pipe. This principle of draining and antifreeze eliminates the root cause of freezing and blockage in exposed pipes due to water accumulation, ensuring unobstructed pipe flow.

[0016] Based on the fact that the valve body and drain pipe are not prone to freezing, the operating part of the antifreeze valve's drive component is located on the outside of the water storage tank, which allows firefighters to operate it quickly in emergencies, enabling reliable opening and closing of the antifreeze valve. This ensures that firefighters can immediately open the valve to provide rapid water supply in the event of a fire in winter, significantly improving the emergency response capability and reliability of the forest fire fighting system in the cold season.

[0017] 2. Regarding the linkage component in the drive assembly that connects the operating part and the valve core, enabling them to form a transmission engagement, this application provides two implementation directions: the linkage component is located in the inner cavity outside the valve core on the drain pipe, and the linkage component is located in the inner cavity of the water storage tank. The implementation method of setting the linkage component in the inner cavity of the water storage tank can be adopted to increase the flow rate of the drain pipe by reducing the obstruction of the linkage component inside the drain pipe as needed. Alternatively, the high sealing requirement between the valve stem and the water storage tank can be converted to a low sealing requirement between the valve stem and the drain pipe. By selecting the inner cavity outside the valve core on the drain pipe, it is ensured that when the valve core is in the closed state, water leakage in the water storage tank will not occur due to seal failure at the connection between the valve stem and the water storage tank, thus ensuring stable water storage in the water storage tank.

[0018] 3. This application also provides various implementation methods for valves with valve body structures such as butterfly valves, gate valves, and globe valves. When implementing these methods, the appropriate method can be selected based on the specific requirements of the valve. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the closed state of Embodiment 1 of this utility model.

[0020] Figure 2 This is a three-dimensional structural diagram of the open state of Embodiment 1 of this utility model.

[0021] Figure 3 This is a top-section structural diagram of the closed state of Embodiment 2 of this utility model.

[0022] Figure 4This is a top-section structural diagram of the closed state of Embodiment 3 of this utility model.

[0023] Figure 5 This is a side sectional view of the closed state of Embodiment 4 of this utility model.

[0024] In the diagram: 10, water tank; 50, drain pipe; 51, butterfly plate; 52, drive assembly; 521, connecting rod; 522, valve stem; 5221, operating lever; 5222, linkage rod; 523, first rack; 524, first gear; 525, second rack; 526, second gear; 53, valve seat; 54, valve disc; 55, gate. 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] For ease of understanding, the specific structure and working method of this utility model are further described below with reference to the accompanying drawings: The specific structure of this utility model is as follows: Figure 1-5 As shown, the antifreeze valve is used to open and close the flow channel of the drain pipe 50 on the water storage tank 10. Its main structure includes the valve body of the antifreeze valve and the drive assembly 52 that drives the valve core in the valve body to open and close.

[0027] The antifreeze valve body is connected to the drain pipe 50 or the water tank 10, and is located inside the water tank 10. When the valve core on the valve body is closed, it prevents water from accumulating in the section of the drain pipe 50 outside the water tank 10. This application cleverly utilizes the physical properties of the large volume, high thermal inertia, and resistance to overall freezing of the water inside the water tank 10 by placing the antifreeze valve body inside the water tank 10, providing a non-freezing working environment for the critical valve body. When the valve core is closed, it effectively cuts off the drain pipe 50, isolating the section of the drain pipe 50 outside the cold environment (the section outside the water tank 10) from the water inside the water tank 10, thereby draining the water from that section of the pipe. This principle of draining and preventing freezing eliminates the root cause of ice blockage in exposed pipes due to water accumulation, ensuring unobstructed pipe flow.

[0028] A drive assembly 52 for opening and closing the valve core is installed on the antifreeze valve or drain pipe 50. The operating part of the drive assembly 52 is located on the outside of the water storage tank 10. Given that the valve body and drain pipe 50 are not prone to freezing, the location of the operating part of the antifreeze valve's drive assembly 52 on the outside of the water storage tank 10 facilitates rapid operation by firefighters in emergencies, ensuring reliable opening and closing of the antifreeze valve. This guarantees that firefighters can immediately open the valve for rapid water supply in the event of a fire in winter, significantly improving the emergency response capability and reliability of the forest fire fighting system during the cold season.

[0029] Based on the aforementioned core protection concept that the valve body is located inside the water storage tank 10, while the drive assembly 52 is located outside the water storage tank 10, the specific valve body structure and drive assembly 52 have the following implementation methods: In general, for the linkage component in the drive assembly 52 that connects the operating part and the valve core and enables them to form a transmission engagement, there are two implementations: the linkage component is located in the inner cavity on the drain pipe 50 outside the valve core, and the linkage component is located in the inner cavity of the water storage tank 10.

[0030] In an embodiment where the linkage assembly is located in the inner cavity outside the valve core on the drain pipe 50: Example 1: As Figure 1 and Figure 2 As shown, the valve body of the antifreeze valve includes a valve seat 53 coaxially connected to the inner cavity of the drain pipe 50 and a butterfly plate 51 that rotatably fits on the valve seat 53 around the radial line of the drain pipe 50, thus forming an antifreeze valve with a butterfly valve structure. The linkage assembly includes a connecting rod 521 with one end eccentrically hinged to the butterfly plate 51, and the other end of the connecting rod 521 hinged to the drive end of the operating part, and the hinge axes at both ends of the connecting rod 521 are parallel to the radial line.

[0031] Example 2: As Figure 3 As shown, the valve body of the antifreeze valve includes a valve seat 53 coaxially connected to the inner end of the drain pipe 50 and a valve disc 54 constituting the valve core, which can slide along the axial direction of the valve seat 53 to block and open the inner end of the valve seat 53, thereby forming an antifreeze valve with a structure similar to a shut-off valve; the linkage assembly includes a connecting rod 521 with its two ends respectively hinged to the valve disc 54 and the drive end of the operating part, and the hinge axes at both ends of the connecting rod 521 are parallel to each other.

[0032] Based on Embodiments 1 and 2, the operating unit includes a valve stem 522 that rotates and engages on the pipe body of the drain pipe 50 located outside the water storage tank 10 or on the outer wall of the water storage tank 10. The rotation axis of the valve stem 522 is parallel to the hinge axis of the connecting rod 521, and the valve stem 522 has an inner end that penetrates into the inner cavity of the drain pipe 50 and an outer end that is distributed outside the drain pipe 50. The outer end of the valve stem 522 constitutes the operating end of the operating unit, and a connecting rod 5222 is vertically fixed to the inner end of the valve stem 522. The outer end of the connecting rod 5222 constitutes the driving end that is hinged to the connecting rod 521. A locking member that can lock the valve stem 522 when the butterfly plate 51 is closed is installed on the water storage tank 10 or the drain pipe 50.

[0033] During operation, rotating the operating end (outer end) of the valve stem 522 drives the connecting rod 5222 to swing. During this swinging motion, the connecting rod 5222 drives the connecting rod 521 to rotate, thereby driving the butterfly plate 51 to rotate radially to achieve opening and closing; or it drives the valve disc 54 to slide axially along the drain pipe 50 to achieve opening and closing. Furthermore, when the valve stem 522 rotates to open and close the valve core, a locking element locks the valve stem 522 to ensure the stability of the valve core in the open and closed states.

[0034] Example 3: As Figure 4 As shown, the valve body of the antifreeze valve includes a valve seat 53 coaxially connected to the inner end of the drain pipe 50 and a valve disc 54 constituting the valve core, which can slide along the axial direction of the valve seat 53 to block and open the inner end of the valve seat 53; the linkage component is a first rack 523 with one end fixed on the valve disc 54.

[0035] Based on Embodiment 3, the first rack 523 is arranged axially along the drain pipe 50. The operating part includes a valve stem 522 that rotates and engages on the pipe body outside the water storage tank 10 or on the outer wall of the water storage tank 10. The valve stem 522 has an inner end that penetrates into the inner cavity of the drain pipe 50 and an outer end that is distributed outside the drain pipe 50. The outer end of the valve stem 522 constitutes the operating end of the operating part, and the inner end of the valve stem 522 is coaxially fixed with a first gear 524 that meshes with the first rack 523. A locking member that can lock the valve stem 522 when the butterfly plate 51 is closed is installed on the water storage tank 10 or the drain pipe 50.

[0036] During operation, rotating the operating end (outer end) of the valve stem 522 drives the first gear 524 to rotate. The first gear 524 meshes with the first rack 523, causing the first rack 523 and the valve disc 54 to slide axially along the drain pipe 50 to achieve opening and closing. Furthermore, when the valve stem 522 rotates to drive the valve core to open and close, a locking element locks the valve stem 522 to ensure the stability of the valve core in the open and closed states.

[0037] Based on embodiments 1-3 above, the outer end of the valve stem 522 is bent outward to form an operating lever 5221, improving the ease of rotation of the valve stem 522. The locking element (not shown in the accompanying drawings) is a pin or a set screw on the water tank 10 or drain pipe 50 that engages with and locks the operating lever 5221. Both the pin engagement and the set screw locking are existing technologies and will not be described further here.

[0038] In the implementation method where the linkage component is installed inside the water storage tank 10: Example 4: Figure 5 As shown, the valve body of the antifreeze valve includes a valve seat 53 fixed to the inner wall of the water storage tank 10 and connected to the inner end of the drain pipe 50. A gate plate 55 is provided on the valve seat 53 and forms a gate valve structure together with the valve seat 53. A second rack 525 is fixed on the top of the gate plate 55 and is arranged vertically to form a linkage component.

[0039] Based on Embodiment 4, the operating unit includes a valve stem 522 that rotates and engages with the water storage tank 10. The valve stem 522 has an inner end that penetrates into the inner cavity of the water storage tank 10 and an outer end that is distributed outside the water storage tank 10. The outer end of the valve stem 522 constitutes the operating end of the operating unit, and a second gear 526 that meshes with the second rack 525 is coaxially fixed to the inner end of the valve stem 522. A locking member that can lock the valve stem 522 when the gate 55 is closed is installed on the water storage tank 10 or the drain pipe 50.

[0040] During operation, the operating end (outer end) of the valve stem 522 is rotated, thereby driving the second gear 526 to rotate. The second gear 526 meshes with the second rack 525, causing the second rack 525 and the gate 55 to slide and rise, thus achieving opening and closing. Furthermore, when the valve stem 522 rotates to drive the gate 55 to open and close, a locking device locks the valve stem 522 to ensure the stability of the gate 55 in both open and closed states.

[0041] In the implementation of Embodiment 4, a worm gear (not shown in the accompanying drawings) is coaxially fixed to the outer end of the valve stem 522. The locking element (not shown in the accompanying drawings) is a worm gear on the water tank 10 or drain pipe 50 that meshes with the worm gear. That is, the valve stem 522 is locked after rotation through the one-way locking function of the worm gear on the worm gear. Of course, this implementation method can also be applied to locking the valve stem 522 in Embodiments 1-3. Similarly, the pin or set screw structure for locking the valve stem 522 in Embodiments 1-3 can also be applied to this Embodiment 4.

[0042] The valve body structure and drive component 52 selected in the above embodiments 1-4 each have their own advantages in actual implementation, and can be selected according to actual needs.

[0043] For example, in the implementation of Embodiment 4, there are no interlocking components obstructing the drain pipe 50, which can increase the flow rate of the drain pipe 50. Of course, the gate valve structure in Embodiment 4 can also be replaced with a ball valve, globe valve, butterfly valve, etc. In implementation, a worm gear can be directly installed on the rotation shaft of its valve core, and a worm coaxially fixed to the valve stem 522 and meshing with the worm gear can be used. Of course, in this embodiment, there are high sealing requirements at the rotation connection between the valve stem 522 and the water storage tank 10, and an existing rotation sealing structure needs to be used to achieve the seal.

[0044] For example, in the embodiments of Examples 1-3, the valve stem 522 does not penetrate the water storage tank 10. Therefore, there is no need to consider the high sealing requirements between the valve stem 522 and the water storage tank 10. Although leakage between the valve stem 522 and the drain pipe 50 needs to be considered during implementation, even if the sealing is poor, leakage only exists when the valve core is in the open state, resulting only in water leakage during use. When the valve core is in the closed state, there will be no leakage of water in the water storage tank 10, ensuring that the water storage tank 10 can stably store water.

[0045] In addition, regarding the selection of valve body structure, butterfly valves, gate valves, globe valves, or ball valves all have their own valve characteristics. These are all existing technologies, and in actual implementation, the appropriate type can be selected based on the emphasis of the valve requirements.

[0046] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0048] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. An antifreeze valve for a water storage tank, characterized in that, Includes a valve body located in the inner cavity of the water storage tank (10) to prevent water from accumulating in a section of the drain pipe (50) outside the water storage tank (10) when the valve core on the valve body is closed; the antifreeze valve or drain pipe (50) is equipped with a drive assembly (52) for driving the valve core to open and close, the operating part of the drive assembly (52) being located outside the water storage tank (10).

2. The antifreeze valve for a water storage tank according to claim 1, characterized in that, The drive assembly (52) includes a linkage assembly that connects the operating part and the valve core and enables them to form a transmission engagement. The linkage assembly is located in the inner cavity on the drain pipe (50) outside the valve core.

3. The antifreeze valve for a water storage tank according to claim 2, characterized in that, The antifreeze valve is a butterfly valve, and the valve body includes a valve seat (53) coaxially connected to the inner cavity of the drain pipe (50) and a butterfly plate (51) that rotates around the radial line of the drain pipe (50) and is fitted on the valve seat (53) to form the valve core; the linkage assembly includes a connecting rod (521) with one end eccentrically hinged to the butterfly plate (51), the other end of the connecting rod (521) is hinged to the drive end of the operating part, and the hinge axes at both ends of the connecting rod (521) are parallel to the radial line.

4. The antifreeze valve for a water storage tank according to claim 2, characterized in that, The antifreeze valve is a shut-off valve, and the valve body includes a valve seat (53) coaxially connected to the inner end of the drain pipe (50) and a valve disc (54) that forms the valve core and can slide along the axial direction of the valve seat (53) to block and open the inner end of the valve seat (53); the linkage assembly includes a connecting rod (521) with both ends hinged to the valve disc (54) and the drive end of the operating part, respectively, and the hinge axes at both ends of the connecting rod (521) are parallel to each other.

5. An antifreeze valve for a water storage tank according to claim 3 or 4, characterized in that, The operating part includes a valve stem (522) that rotates on the pipe body outside the water tank (10) or on the outer wall of the water tank (10) of the drain pipe (50). The rotation axis of the valve stem (522) is parallel to the hinge axis of the connecting rod (521). The valve stem (522) has an inner end that penetrates into the inner cavity of the drain pipe (50) and an outer end that is distributed outside the drain pipe (50). The outer end of the valve stem (522) constitutes the operating end of the operating part. The inner end of the valve stem (522) is vertically fixed with a connecting rod (5222). The outer end of the connecting rod (5222) constitutes the driving end that is hinged to the connecting rod (521). A locking element that can lock the valve stem (522) in the closed state of the butterfly plate (51) is installed on the water tank (10) or the drain pipe (50).

6. The antifreeze valve for a water storage tank according to claim 5, characterized in that, The outer end of the valve stem (522) is bent outward to form an operating rod (5221). The locking component is a pin or a set screw that is inserted and locked to the locking operating rod (5221) on the water tank (10) or drain pipe (50).

7. The antifreeze valve for a water storage tank according to claim 1, characterized in that, The drive assembly (52) includes a linkage assembly that connects the operating part and the valve core to form a transmission cooperation between the two, and the linkage assembly is disposed in the inner cavity of the water tank (10).

8. The antifreeze valve for a water storage tank according to claim 7, characterized in that, The antifreeze valve is a gate valve, and the valve body includes a valve seat (53) fixed to the inner wall of the water tank (10) and connected to the inner end of the drain pipe (50). A gate plate (55) is provided on the valve seat (53) and forms a gate valve structure together with the valve seat (53). A second rack (525) is fixed on the top of the gate plate (55) and is arranged vertically to form the linkage assembly. The operating part includes a valve stem (522) that rotates and engages with the water tank (10). The valve stem (522) has an inner end that penetrates into the inner cavity of the water tank (10) and an outer end that is distributed outside the water tank (10). The outer end of the valve stem (522) forms the operating end of the operating part. A second gear (526) that meshes with the second rack (525) is coaxially fixed on the inner end of the valve stem (522). A locking element that can lock the valve stem (522) when the gate plate (55) is closed is installed on the water tank (10) or the drain pipe (50).

9. The antifreeze valve for a water storage tank according to claim 8, characterized in that, The outer end of the valve stem (522) is coaxially fixed with a worm gear, and the locking element is a worm gear that meshes with the worm gear and is provided on the water tank (10) or drain pipe (50).

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