Float ball valve and cooling system

Abstract

The utility model relates to valve technical field provides a kind of float ball valve and cooling system, wherein, float ball valve includes float ball valve body and liquid hole, float ball valve body includes valve body, valve core and float ball mechanism, the liquid inlet cavity and the liquid outlet cavity are in the valve body, the lateral wall of liquid inlet cavity is provided with liquid inlet hole, the lateral wall of liquid outlet cavity is provided with liquid outlet hole, the on-off state of liquid inlet cavity and liquid outlet cavity is controlled by valve core and float ball mechanism;Liquid hole is arranged in the lateral wall of liquid inlet cavity, liquid hole is located in the side of liquid inlet cavity close to liquid outlet cavity, liquid hole is connected with the outside space of liquid inlet cavity and float ball valve body.Such setting, in low-temperature environment such as temperature is lower than the freezing point of liquid, even if valve core will liquid inlet cavity and liquid outlet cavity are cut off, liquid in liquid inlet cavity will flow out through liquid hole, liquid in float ball valve is in flowing state, increase the difficulty of liquid solidification, so that the problem that float ball valve can be easily frozen due to liquid solidification can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a float valve and a cooling system. Background Technology

[0002] Float valves are common automatic water level control valves widely used in cooling systems such as water tanks and cooling towers. Taking a cooling tower system as an example, a cooling tower system consists of multiple cooling towers, with the bottoms of adjacent cooling towers connected by pipes to form a communicating vessel. Each cooling tower is equipped with a float valve, which controls the water level of the cooling tower system. While the real-time water level in each cooling tower is consistent, the precise positioning of the float valves within the cooling tower is not easily guaranteed, causing the float valves not to open and close simultaneously. Specifically, when the water level in the cooling tower reaches the float valve at its lower setting, the lower-positioned float valve will close first, while the higher-positioned float valve will remain open until the water level reaches the highest-positioned float valve, at which point all float valves will close.

[0003] In low-temperature environments such as when the temperature is below the freezing point of water, the water inside the pre-closed float valve will not circulate and will freeze within a few minutes, freezing the valve body. This will cause the water level in the cooling tower to drop again, and when the float valve needs to be reopened, it will be unable to open smoothly, preventing water from being added to the cooling tower and affecting its operation.

[0004] Therefore, how to solve the problem that float valves in related technologies are prone to freezing in low-temperature environments has become an important technical problem to be solved by those skilled in the art. Utility Model Content

[0005] This invention provides a float valve and a cooling system to solve the defect in related technologies where float valves are prone to freezing in low-temperature environments.

[0006] This utility model provides a float valve, comprising: The float valve body includes a valve body, a valve core, and a float mechanism. The valve body has an inlet chamber and an outlet chamber. The side wall of the inlet chamber is provided with an inlet hole, and the side wall of the outlet chamber is provided with an outlet hole. The on / off state of the inlet chamber and the outlet chamber is controlled by the valve core and the float mechanism. A drain hole is provided on the side wall of the inlet chamber. The drain hole is located on the side of the inlet chamber close to the outlet chamber. The drain hole connects the inlet chamber with the external space of the float valve body.

[0007] According to the present invention, a float valve further includes: A sealing element is disposed at the discharge hole, and the sealing element is detachably connected to the float valve body.

[0008] According to the present invention, a float valve further includes: A sealing ring is disposed on the outside of the float valve body, and the sealing ring is disposed between the sealing member and the float valve body.

[0009] According to the present invention, a float valve is provided with a connecting thread on the side wall of the discharge hole, and the sealing member is provided with an external thread, the external thread being adapted to the connecting thread.

[0010] According to the present invention, a float valve further includes: A drainage tube, the first end of which is used to connect to the drain hole; The second end of the drain pipe is connected to one of the storage tank and the waste liquid tank; or, the inlet of the float valve body is connected to the replenishment tank through a pipeline, and the second end of the drain pipe is connected to the replenishment tank.

[0011] According to the present invention, the cross-sectional area of ​​the discharge hole is smaller than that of the inlet hole.

[0012] According to the present invention, the inlet hole has a circular cross-sectional shape, and the outlet hole has a circular cross-sectional shape. The ratio of the diameter of the discharge hole to the diameter of the inlet hole is 0.2 to 0.3.

[0013] According to the present invention, a float valve is provided in which the diameter of the discharge hole is 8 mm to 16 mm.

[0014] A cooling system according to the present invention includes a float valve as described above.

[0015] According to the present invention, a cooling system is provided, the cooling system comprising: At least two cooling towers, each of which is equipped with the float valve; A connecting pipe is provided, through which the bottoms of two adjacent cooling towers are connected; The liquid replenishment device includes a liquid replenishment tank and a liquid replenishment branch. Each float valve corresponds to one liquid replenishment branch, and the two ends of the liquid replenishment branch are respectively connected to the liquid inlet of the float valve and the liquid replenishment tank. The float valve's drain hole is connected to the cooling tower, or the float valve is connected to the replenishment tank via a drain pipe.

[0016] The float valve provided by this utility model includes a float valve body and a drain hole. The float valve body includes a valve body, a valve core, and a float mechanism. The valve body has an inlet chamber and an outlet chamber. An inlet hole is provided on the side wall of the inlet chamber, and an outlet hole is provided on the side wall of the outlet chamber. The on / off state of the inlet and outlet chambers is controlled by the valve core and the float mechanism. When the inlet and outlet chambers are connected, the liquid entering the inlet chamber through the inlet hole can flow to the outlet chamber and out through the outlet hole. When the inlet and outlet chambers are cut off, the liquid in the inlet chamber cannot flow to the outlet chamber. The drain hole is provided on the side wall of the inlet chamber, located on the side of the inlet chamber closer to the outlet chamber, and connects the inlet chamber to the external space of the float valve body. The liquid in the inlet chamber can flow to the external space of the float valve body through the drain hole. With this design, even if the valve core cuts off the inlet and outlet chambers in low-temperature environments such as when the temperature is below the freezing point of the liquid, the liquid in the inlet chamber will still flow out through the drain hole. The liquid inside the float valve is in a flowing state, which increases the difficulty of liquid solidification and thus prevents the float valve from freezing easily due to liquid solidification.

[0017] Furthermore, the cooling system provided by this invention, having the float valve as described above, also possesses the various advantages described above. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the float valve provided by this utility model.

[0020] Figure 2 This is a schematic diagram of the cooling system provided by this utility model.

[0021] Figure label: 1. Liquid inlet chamber; 2. Liquid outlet chamber; 3. Liquid inlet hole; 4. Liquid outlet hole; 5. Float mechanism; 6. Sealing component; 7. Sealing ring; 8. Cooling tower; 9. Liquid replenishment branch; 10. Float valve; 11. Connecting pipeline; 12. Valve body; 13. Valve core; 14. Circulating liquid inlet; 15. Circulating liquid outlet. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] The following is combined Figures 1 to 2 This invention describes the float valve.

[0024] like Figures 1 to 2 As shown, the float valve provided in this embodiment of the present invention includes a float valve body and a drain hole.

[0025] Specifically, the float valve body includes a valve body 12, a valve core 13, and a float mechanism 5. The valve body 12 has an inlet chamber 1 and an outlet chamber 2. The side wall of the inlet chamber 1 is provided with an inlet hole 3, and the side wall of the outlet chamber 2 is provided with an outlet hole 4.

[0026] The valve core 13 is reciprocally slidably disposed inside the valve body 12, while the float mechanism 5 is disposed outside the valve body 12. Based on changes in liquid level, the float mechanism 5 interacts with the valve core 13, causing the valve core 13 to slide relative to the valve body 12, thereby controlling the connection between the inlet chamber 1 and the outlet chamber 2. In other words, the on / off state of the inlet chamber 1 and the outlet chamber 2 is controlled by the float mechanism 5.

[0027] When the float mechanism 5 connects the inlet chamber 1 and the outlet chamber 2, the liquid that enters the inlet chamber 1 through the inlet hole 3 can flow to the outlet chamber 2 and out through the outlet hole 4.

[0028] When the inlet chamber 1 and outlet chamber 2 are cut off by the float mechanism 5, the liquid in the inlet chamber 1 cannot flow into the outlet chamber 2.

[0029] A drain hole is located on the side wall of the inlet chamber 1, near the outlet chamber 2. The drain hole connects the inlet chamber 1 to the external space of the float valve body. Liquid in the inlet chamber 1 can flow to the external space of the float valve body through the drain hole.

[0030] With this configuration, even if the liquid inlet chamber 1 and the liquid outlet chamber 2 are cut off in low-temperature environments such as when the temperature is below the freezing point of the liquid, the liquid in the liquid inlet chamber 1 will still flow out through the liquid outlet hole. The liquid in the float valve 10 is in a flowing state, which increases the difficulty of liquid solidification and thus prevents the float valve 10 from being easily frozen due to liquid solidification.

[0031] In some cases, the liquid flowing out of the drain hole can be diverted to a space outside the space where the float valve 10 is located, so as to avoid the liquid flowing out of the drain hole affecting the liquid level in the space where the float valve 10 is located.

[0032] In some cases, the liquid flowing from the drain hole can also flow directly into the space where the float valve 10 is located. For example, in a cooling tower system, the float valve in this embodiment can be used for the relatively low-positioned float valve. Since the float valve 10, which is positioned relatively low, is closed, the other float valves, which are positioned relatively high, remain open and still require liquid to enter the cooling tower 8. In this case, as long as the opening size of the drain hole is designed properly and the liquid supply flow rate of the branch where the float valve 10 is located is controlled, the problem of excessively high liquid level or even overflow in the cooling tower 8 will not occur.

[0033] In a further embodiment, the opening and closing state of the drain hole is controllable. When the drain hole is open, the liquid in the inlet chamber 1 can be discharged to the outside of the float valve 10 through the drain hole. When the drain hole is closed, the liquid in the inlet chamber 1 will no longer be discharged to the outside of the float valve 10.

[0034] In environments where the temperature is below the freezing point of the liquid, a stagnant liquid is prone to solidification and freezing. In such cases, the drain hole is kept open. When the float mechanism 5 cuts off the inlet chamber 1 from the outlet chamber 2, the liquid in the inlet chamber 1 flows out through the drain hole, ensuring that the liquid inside the float valve 10 remains in a flowing state and increasing the difficulty of liquid solidification. When the float mechanism 5 connects the inlet chamber 1 to the outlet chamber 2, the liquid in the inlet chamber 1 flows out of the float valve body through the drain hole and also flows to the outlet chamber 2, ensuring that the space where the float valve 10 is located is replenished with liquid.

[0035] In environments where the temperature is above the liquid's freezing point, the liquid will not solidify or freeze, thus keeping the drain hole closed. When the float mechanism 5 disconnects the inlet chamber 1 from the outlet chamber 2, the float valve 10 will not freeze. When the float mechanism 5 connects the inlet chamber 1 and the outlet chamber 2, all the liquid in the inlet chamber 1 enters the outlet chamber 2, avoiding resource waste, maximizing the replenishment flow rate, improving the replenishment efficiency of the space where the float valve 10 is located, and saving replenishment time.

[0036] In this embodiment of the invention, the float valve 10 further includes a sealing element 6, which is disposed at the drain hole and detachably connected to the float valve body. This design allows for several advantages. First, under normal temperature conditions where liquid does not need to be drained through the drain hole for freeze protection, the drain hole can be sealed by the sealing element 6, preventing continuous liquid loss and saving resources. Second, under low temperature conditions requiring freeze protection, the sealing element 6 can be easily removed, restoring the drain hole's drainage function. This enhances the adaptability of the float valve 10 to different working environments and improves its flexibility of use.

[0037] In a specific embodiment, the sidewall of the drain hole is provided with connecting threads, and the sealing component 6 is provided with external threads, which are compatible with the connecting threads. That is, the installation and removal of the sealing component 6 are achieved through a threaded connection. This makes the operation very convenient, allowing users to complete the task quickly without the need for complex tools, thus improving ease of use. Furthermore, as a mature connection technology, threaded connections offer advantages such as simple structure, reliable connection, and good sealing performance. This ensures that the sealing component 6 is securely installed and does not loosen, fitting tightly against the sidewall of the drain hole, effectively preventing liquid leakage from the mating gap, thereby guaranteeing the stable implementation of the sealing function.

[0038] In this embodiment, the float valve 10 also includes a sealing ring 7, which is disposed on the outside of the float valve body and between the sealing member 6 and the float valve body. The sealing ring 7 effectively fills the gap between the float valve body and the sealing member 6, greatly improving the sealing reliability of the sealing member 6 to the drain hole. This ensures that after the sealing member 6 is installed, liquid will not leak from this mating point, thus avoiding unnecessary resource waste and guaranteeing the tightness and stability of the float valve 10 under normal temperature conditions.

[0039] In a further embodiment, the float valve 10 also includes a drain tube, the first end of which is used to connect to the drain hole.

[0040] The second end of the drain pipe can be connected to either a liquid storage tank or a waste liquid tank. When the second end of the drain pipe is connected to the liquid storage tank, the liquid discharged from the float valve 10 can be stored in the liquid storage tank, and the discharged liquid can be collected to avoid waste. When the second end of the drain pipe is connected to the waste liquid tank, the liquid discharged from the float valve 10 can be directly discharged.

[0041] If the inlet port 3 of the float valve body is connected to the replenishment tank via a pipeline, the second end of the drain pipe can also be connected to the replenishment tank. The liquid discharged from the float valve 10 can flow back to the replenishment tank and be transported to each float valve again, realizing the recycling of the liquid.

[0042] By setting up a drainage pipe, the liquid flowing out of the drain hole can be collected and guided, which not only avoids the impact of the drained liquid on the liquid level in the space where the float valve 10 is located, but also achieves orderly management of the drained liquid and avoids waste of liquid.

[0043] In this embodiment of the invention, the cross-sectional area of ​​the drain hole is smaller than that of the inlet hole. When the float valve 10 is open for normal liquid replenishment, most of the liquid can flow preferentially and quickly to the outlet chamber 2 to complete the replenishment function, while only a small stream of liquid flows out through the drain hole. This achieves the purpose of preventing the liquid inside the float valve 10 from solidifying or freezing in low-temperature environments, while minimizing unnecessary liquid waste, cleverly balancing antifreeze effect and economic efficiency.

[0044] In this embodiment, the cross-sectional shape of the liquid inlet is circular, the cross-sectional shape of the liquid outlet is circular, and the ratio of the diameter of the liquid outlet to the diameter of the liquid inlet is 0.2~0.3.

[0045] In this way, sufficient liquid flow can be formed under low temperature conditions to disturb the liquid inside the float valve 10, effectively preventing freezing, while the amount of liquid lost for antifreeze can be controlled within an acceptable minimum range, achieving the best balance between antifreeze performance and operating costs.

[0046] In a specific embodiment, the diameter of the discharge hole is 8 mm to 16 mm.

[0047] Specifically, the nominal diameter of the replenishment tube is 40 mm. When the sidewall of the drain hole is provided with connecting threads, the nominal diameter of the external thread of the sealing element 6 is 12 mm. Specifically, an M12 bolt can be selected as the sealing element 6, thus achieving standardization of the sealing element 6.

[0048] It should be noted that in this embodiment, the antifreeze technology of the float valve body is achieved by opening a drain hole on the side wall of the inlet chamber 1 of the float valve body. This technical solution is not limited by the structural principle of the float valve body. The float valve body of any structural principle has a valve body 12, a valve core 13, and a float mechanism 5. The valve core 13 is located inside the valve body 12, and the float mechanism 5 is connected to the valve core 13. The float mechanism 5 can drive the valve core 13 to move relative to the valve body 12 based on the liquid level. The drain hole is located on the side wall of the inlet chamber 1 of the valve body 12, and is located on the side of the inlet hole 3 closest to the outlet chamber 2. In this embodiment, the antifreeze technology of the float valve body is achieved by opening a drain hole on the side wall of the inlet chamber 1 of the float valve body. This method is applicable to float valve bodies of any structural principle; therefore, the specific structure of the float valve body and the structure of the float mechanism 5 are not specifically described or limited here.

[0049] On the other hand, this embodiment of the present invention also provides a cooling system, including the float valve provided in any of the above embodiments. The float valve provided in any of the above embodiments has the advantage of not being easily frozen in low-temperature environments; therefore, the cooling system in this embodiment has the advantages of smooth liquid replenishment and low failure rate. The derivation process of the beneficial effects of the cooling system in this embodiment of the present invention is largely similar to the derivation process of the beneficial effects of the float valve described above, and therefore will not be repeated here.

[0050] In this embodiment, the cooling system includes a connecting pipe 11, a liquid replenishment device, and at least two cooling towers 8. The bottoms of two adjacent cooling towers 8 are connected by the connecting pipe 11 to form a communicating vessel. Each cooling tower 8 is provided with a circulating liquid inlet 14 and a circulating liquid outlet 15, which are connected to the circulating pipe. The liquid in the circulating pipe enters the cooling tower 8 through the circulating liquid inlet 14, is cooled by the cooling tower 8, and then enters the circulating pipe through the circulating liquid outlet 15 to flow to the equipment to be cooled.

[0051] Reference Figure 2 Each cooling tower 8 is equipped with a float valve 10.

[0052] The liquid replenishment device includes a liquid replenishment tank and liquid replenishment branches 9. Each float valve 10 corresponds to one liquid replenishment branch 9, and the two ends of the liquid replenishment branch 9 are connected to the liquid inlet 3 of the float valve 10 and the liquid replenishment tank, respectively. The liquid in the liquid replenishment tank can flow to the liquid inlet 3 of the float valve 10 through the liquid replenishment branch 9. The liquid replenishment device is used to replenish liquid into the cooling tower 8 to maintain the liquid level in the cooling tower 8 within a certain range.

[0053] In some embodiments, the drain hole of the float valve 10 is connected to the cooling tower 8, and the liquid discharged from the drain hole of the float valve 10 can flow directly into the cooling tower 8. As long as the liquid discharge rate of the drain hole of the float valve 10 is less than the liquid circulation and loss during the cooling process, the liquid in the cooling tower 8 can be prevented from overflowing.

[0054] In other embodiments, the float valve 10 is connected to the replenishment tank via a drain pipe. The liquid discharged from the drain hole of the float valve 10 can flow back to the replenishment tank, thus avoiding the impact of the liquid discharged from the drain hole on the liquid level in the cooling tower 8 and realizing the circulation of the liquid.

[0055] In a specific embodiment, the liquid in the cooling tower 8, the circulating liquid inlet 14, the circulating liquid outlet 15, the replenishment tank, and the replenishment branch 9 is water.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A float valve, characterized in that, include: The float valve body includes a valve body (12), a valve core (13), and a float mechanism (5). The valve body (12) has an inlet chamber (1) and an outlet chamber (2). The side wall of the inlet chamber (1) is provided with an inlet hole (3), and the side wall of the outlet chamber (2) is provided with an outlet hole (4). The on / off state of the inlet chamber (1) and the outlet chamber (2) is controlled by the valve core (13) and the float mechanism (5). A drain hole is provided on the side wall of the inlet chamber (1). The drain hole is located on the side of the inlet chamber (1) near the outlet chamber (2). The drain hole connects the inlet chamber (1) with the external space of the float valve body.

2. The float valve according to claim 1, characterized in that, Also includes: A plugging component (6) is disposed at the discharge hole, and the plugging component (6) is detachably connected to the float valve body.

3. The float valve according to claim 2, characterized in that, Also includes: A sealing ring (7) is disposed on the outside of the float valve body, and the sealing ring (7) is disposed between the sealing member (6) and the float valve body.

4. The float valve according to claim 2, characterized in that, The sidewall of the drain hole is provided with a connecting thread, and the sealing member (6) is provided with an external thread, which is adapted to the connecting thread.

5. The float valve according to claim 1, characterized in that, Also includes: A drainage tube, the first end of which is connected to the drain hole; The second end of the drain pipe is connected to one of the storage tank and the waste liquid tank; or, the inlet hole (3) of the float valve body is connected to the replenishment tank through a pipeline, and the second end of the drain pipe is connected to the replenishment tank.

6. The float valve according to claim 1, characterized in that, The cross-sectional area of ​​the discharge hole is smaller than that of the inlet hole (3).

7. The float valve according to claim 6, characterized in that, The cross-sectional shape of the liquid inlet (3) is circular, and the cross-sectional shape of the liquid outlet is circular; The ratio of the diameter of the discharge hole to the diameter of the inlet hole (3) is 0.2 to 0.

3.

8. The float valve according to claim 7, characterized in that, The diameter of the discharge hole is 8 mm to 16 mm.

9. A cooling system, characterized in that, Includes the float valve as described in any one of claims 1 to 8.

10. The cooling system according to claim 9, characterized in that, The cooling system includes: At least two cooling towers (8), each of which is equipped with the float valve; The bottoms of two adjacent cooling towers (8) are connected by the connecting pipe (11); The replenishment device includes a replenishment tank and a replenishment branch (9). Each float valve corresponds to one replenishment branch (9). The two ends of the replenishment branch (9) are respectively connected to the inlet (3) of the float valve (10) and the replenishment tank. The float valve's discharge port is connected to the cooling tower (8), or the float valve is connected to the replenishment tank via a drain pipe.

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