Anti-freezing device for water conservancy and hydropower equipment

Abstract

The utility model provides a water conservancy and hydropower equipment anti-freezing device which comprises a shell, the shell is fixedly arranged at the bottom of a valve body, a water dripping hole is formed in the bottom end of the shell, the shell is movably connected with a plug capable of blocking the water dripping hole, the outer side of the shell is movably connected with a prompt rod, and a clamping block for limiting movement of the prompt rod is arranged on the shell in a sliding mode. The clamping block has magnetism, a floating block is connected into the shell in a sliding mode, a magnet is arranged on the floating block, and when the floating block descends, the magnet can drive the clamping block to move, so that the clamping block relieves limiting of the prompting rod. The device is convenient to operate and simple in structure, and whether liquid in the shell and the valve body is completely discharged at the moment can be judged by observing whether the prompt rod falls or not.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower equipment technology, and specifically to a water conservancy and hydropower equipment antifreeze device. Background Technology

[0002] Valves are indispensable equipment in water conservancy and hydropower projects. They are used to cut off and regulate water flow, control parameters such as water level and pressure, and ensure the normal operation of water conservancy and hydropower facilities. In low-temperature environments, if water remains inside a valve, it may freeze and cause ice to form between the valve's moving parts, such as the valve core and valve seat, preventing the valve from opening or closing properly. Furthermore, if the water inside the valve freezes, its volume will expand, potentially causing cracks or breaks in the valve body, valve core, valve stem, and other components, leading to serious water leakage accidents.

[0003] Patent CN 209959917 U discloses a valve with good antifreeze effect. It features through holes at both ends of the valve with rubber sealing plugs inside. In low ambient temperatures, the positioning nut can be rotated in advance to remove the rubber sealing plugs from the inlet and outlet ports at both ends of the valve housing, ensuring rapid drainage of incoming liquid. This prevents backflow of liquid from accumulating in the closed valve cavity, which could cause the valve's internal components to freeze or directly block the valve, making it unable to adapt to pipe blockages. However, this device still has the following problems:

[0004] 1. When there are impurities in the pipeline, the outlet is easily blocked. After the outlet is blocked, it is impossible to determine whether the liquid in the pipeline has been completely discharged.

[0005] 2. There is no anti-accidental contact structure at the through hole. Vibration or accidental contact during use can easily cause the water outlet to open, resulting in an accident. Utility Model Content

[0006] In order to solve the problems existing in the prior art, a water conservancy and hydropower equipment antifreeze device is provided to solve the problems mentioned in the above technical background.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] This utility model proposes a housing, which is fixedly installed at the bottom of a valve body. A drip hole is provided at the bottom end of the housing. A plug capable of sealing the drip hole is movably connected to the housing. An indicator rod is movably connected to the outside of the housing. A locking block that limits the movement of the indicator rod is slidably mounted on the housing. The locking block is magnetic. A float is slidably connected inside the housing. A magnet is provided on the float. When the float descends, the magnet can drive the locking block to slide, causing the locking block to release the limitation on the indicator rod.

[0009] Preferably, the indicator rod slides along the vertical direction of the housing, and the indicator rod has a slot for the locking block to slide into.

[0010] Preferably, the card block is fixed to the housing by a spring, and the magnetic force of the magnet is greater than the elastic force of the spring, so that the magnet can move the card block out of the slot.

[0011] Preferably, the initial height of the bottom surface of the indicator rod is higher than the lower surface of the housing.

[0012] Preferably, a rack slides inside the housing, the plug is fixed to the rack, a gear meshes with one side of the rack, and the gear is rotatably connected to the housing.

[0013] Preferably, a power rod is passed through and rotatably connected to the housing, and a drive wheel is slidably connected to one end of the power rod that passes through the housing. When the drive wheel slides out of the power rod and abuts against the gear, the power rod can drive the gear to rotate.

[0014] Preferably, the valve body has a water flow channel, the valve body is threadedly connected to a valve stem, the bottom end of the valve stem is fixed with a valve core that can block the water flow channel, and the bottom end of the valve core is fixed with a push rod. When the valve core closes the water flow channel, the push rod descends and drives the drive wheel to slide out from the power rod.

[0015] Preferably, a slide rod is slidably connected inside the power rod, one end of the slide rod is fixed to the power rod by a tension spring, and the other end is fixed to the drive wheel.

[0016] Preferably, the gear has several grooves, and the drive wheel has several protrusions fixed on it, the protrusions cooperating with the grooves.

[0017] Preferably, a knob is fixedly connected to one end of the power rod that protrudes from the housing.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model has an indicator rod on the outside of the housing. In the initial state, the indicator rod is stuck by a locking block and cannot fall. As the liquid inside the housing gradually flows out, the float inside the housing will also fall with the liquid level. When the float falls to the bottom, it indicates that the liquid inside the housing has basically flowed out. At this time, the magnet fixed on the float is located on one side of the locking block. The magnet uses magnetic force to pull the locking block out of the indicator rod. The indicator rod is no longer restricted in its movement and falls under the action of gravity. When the indicator rod is observed to have fallen, it indicates that the liquid in the housing and valve body has been discharged.

[0020] 2. In this invention, when the valve core opens the water flow channel, the drive wheel and gear do not contact each other. At this time, rotating the power rod at will will not open the drip hole of the plug, thus ensuring a seal during use. When the valve core is closed, the push rod moves downward, squeezing the inclined surface on the drive wheel and causing the drive wheel to slide out of the power rod, so that the drive wheel abuts against the gear. At the same time, the gear has a groove, and the drive wheel has a fixed protrusion that inserts into the groove. Rotating the power rod can drive the gear to rotate, further pushing the rack to drive the plug to open the drip hole for drainage. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a perspective view of the utility model;

[0023] Figure 2 This is a front view of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0025] Figure 4 This is an enlarged view of the internal structure of the casing of this utility model (working state one);

[0026] Figure 5 This is an enlarged view of the internal structure of the casing of this utility model (working state two).

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Housing; 2. Valve body; 3. Drip hole; 4. Plug; 5. Indicator rod; 6. Locking block; 7. Float block; 8. Rack; 9. Gear; 10. Power rod; 11. Drive wheel; 12. Spring; 13. Valve stem; 14. Valve core; 15. Push rod; 16. Slide rod; 17. Tension spring; 18. Protrusion; 19. Groove; 20. Slot; 21. Magnet. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] like Figures 1-5As shown in the figure, this embodiment proposes an antifreeze device for water conservancy and hydropower equipment, including a housing 1, which is fixedly installed at the bottom of a valve body 2. A drip hole 3 is provided at the bottom end of the housing 1. A plug 4 that can seal the drip hole 3 is movably connected to the housing 1. When the plug 4 is pulled out, the drip hole 3 is opened. The diameter of the drip hole 3 is suitable enough so that the water remaining in the valve body 2 can flow out smoothly from the drip hole 3. There is no liquid in the valve body, which can play an antifreeze role.

[0031] A prompting rod 5 is movably connected to the outside of the housing 1. A locking block 6, which limits the movement of the prompting rod 5, slides on the housing 1. The locking block 6 is magnetic. A float 7 is slidably connected inside the housing 1. A magnet 21 is fixed on one side of the float 7. When the float 7 descends, the magnet 21 can drive the locking block 6 to slide. At this time, the locking block 6 releases the limitation on the prompting rod 5.

[0032] After the residual liquid in valve body 2 has flowed out, the float 7 in the housing will also drop with the liquid level. When the float 7 drops to the bottom, it indicates that the liquid in the housing has basically flowed out. The float 7 will drive the locking block 6 to release the limit on the indicator rod 5. The indicator rod 5 will slide down under the action of gravity to indicate that the liquid in the valve body has flowed out. At this time, the drip hole 3 will be closed to prevent accidents caused by the drip hole 3 not being closed when liquid flows in later.

[0033] The indicator rod 5 slides along the vertical direction of the housing 1, and the indicator rod 5 has a slot 20 for the locking block 6 to slide into.

[0034] The card block 6 is fixed to the housing 1 by the spring 12. The magnetic force of the magnet 21 is greater than the elastic force of the spring 12. The magnet 21 can move the card block 6 out of the card slot 20.

[0035] After the float 7 descends to the bottom with the liquid level in the housing 1, the magnet 21 on one side of the float 7 will attract the locking block 6, causing the locking block 6 to move out of the locking slot 20. The indicator rod 5 is no longer restricted and slides down under the action of gravity to provide a prompt.

[0036] The initial height of the bottom surface of the indicator rod 5 is higher than the lower surface of the housing 1.

[0037] In the initial state, the bottom of the indicator rod 5 is higher than the lower surface of the housing 1. At this time, the indicator rod 5 will not affect the normal use of the valve. When the liquid in the valve body 2 has flowed out, the indicator rod 5 will descend and the bottom of the indicator rod 5 will exceed the lower surface of the housing 1. At this time, the indicator rod 5 will be more obvious and can indicate that the liquid in the housing 1 has been discharged.

[0038] A rack 8 slides inside the housing 1, and a plug 4 is fixed to the rack 8. A gear 9 meshes with one side of the rack 8, and the gear 9 is rotatably connected to the housing 1.

[0039] When gear 9 rotates, it can drive rack 8 to slide, causing rack 8 to drive plug 4 to open or close drip hole 3.

[0040] A power rod 10 is inserted through and rotatably connected to the housing 1. One end of the power rod 10, which is inserted into the housing 1, is slidably connected to a drive wheel 11. When the drive wheel 11 slides out of the power rod 10 and abuts against the gear 9, the power rod 10 can drive the gear 9 to rotate.

[0041] When the valve body 2 is in normal use, the power rod 10 can rotate freely. At this time, the drive wheel 11 does not cooperate with the gear 9, and the gear 9 will not pull the plug 4 out of the drip hole 3. When the valve body 2 is closed, the power rod 10 can be rotated to pull the plug 4 out of the drip hole 3, allowing the drip hole 3 to drain liquid. This effectively prevents the outlet from opening easily due to vibration or accidental contact during valve use, causing liquid leakage and potentially leading to a safety accident.

[0042] A water flow channel is provided inside the valve body 2. Figure 3 The direction of the arrow indicates the direction of liquid flow. The valve body 2 is threadedly connected to the valve stem 13. The bottom end of the valve stem 13 is fixed with a valve core 14 that can block the water flow channel. The bottom end of the valve core 14 is fixed with a push rod 15. When the valve core 14 closes the water flow channel, the push rod 15 descends and drives the drive wheel 11 to slide out from the power rod 10.

[0043] Rotating valve stem 13 causes valve core 14 to descend, blocking the water flow channel inside valve body 2. As valve core 14 descends, it drives the bottom push rod 15 to move downward. During the movement, push rod 15 contacts the inclined surface on drive wheel 11. Push rod 15 presses against the inclined surface, causing drive wheel 11 to slide out of power rod 10. Valve core 14 completely closes the water flow channel. Push rod 15 descends to the bottom. At this time, push rod 15 drives drive wheel 11 to abut against the side of gear 9. Drive wheel 11 can drive gear 9 to rotate.

[0044] A slide rod 16 is slidably connected inside the power rod 10. The slide rod 16 and the power rod 10 can only slide relative to each other and cannot rotate relative to each other. One end of the slide rod 16 is fixed to the power rod 10 by a tension spring 17, and the other end is fixed to the drive wheel 11.

[0045] To prevent insufficient friction when the drive wheel 11 abuts against the side of the gear 9, causing the drive wheel 11 to drive the gear 9 to rotate, the gear 9 is provided with several grooves 19, and the drive wheel 11 is fixed with several protrusions 18, which cooperate with the grooves 19. After the drive wheel 11 abuts against the side of the gear 9, the protrusions 18 are inserted into the grooves 19, making the transmission between the drive wheel 11 and the gear 9 smoother.

[0046] A knob is fixedly connected to one end of the power rod 10 that protrudes from the housing 1, making it convenient to hold the power rod 10 when it is rotated.

[0047] Specific work process:

[0048] S1: By driving the valve stem 13 to rotate, the valve stem 13 descends and drives the valve core 14 to descend, so that the valve core 14 blocks the water flow channel. At this time, the valve core 14 drives the top rod 15 to descend to the bottom.

[0049] S2: After the push rod 15 descends to the bottom, it drives the drive wheel 11 to slide out of the power rod 10 through the inclined surface on one side of the drive wheel 11. The tension spring 17 is stretched, the drive wheel 11 abuts against the gear 9, and the protrusion 18 is inserted into the groove 19.

[0050] S3: Rotate the power rod 10 so that the power rod 10 drives the drive wheel 11 to rotate through the slide rod 16. The drive wheel 11 then drives the gear 9 to rotate. The gear 9 drives the rack 8 to rise. The plug 4 rises with the rack 8, opens the drip hole 3, and begins to drain water.

[0051] S4: After the drainage is completed, the float 7 descends to the bottom of the housing 1. At this time, the magnet 21 fixed on the float 7 moves to one side of the locking block 6. The magnet 21 then attracts the locking block 6, causing the locking block 6 to move out of the slot 20. The indicator rod 5 is released from its limit and descends under the action of gravity, indicating that the liquid in the housing 1 has been basically drained.

[0052] S5: Reverse the power rod 10, causing the gear 9 to drive the rack 8 to descend, so that the plug 4 re-blocks the drip hole 3, preventing the drip hole 3 from leaking when liquid is supplied again.

[0053] In S1, antifreeze operation requires closing all valve bodies 2. After closing, the drip hole 3 is responsible for draining the liquid remaining in the valve body 2 and the water inlet pipe of the valve body 2. The water outlet of the valve body 2 is connected to the outside and flows away naturally or is drained by the other valve bodies 2 in the water inlet direction.

[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water conservancy and hydropower equipment antifreeze device, comprising a housing (1), wherein the housing (1) is fixedly disposed at the bottom of a valve body (2), characterized in that, The bottom of the housing (1) is provided with a drip hole (3). The housing (1) is movably connected with a plug (4) that can seal the drip hole (3). A prompting rod (5) is movably connected to the outside of the housing (1). A locking block (6) that limits the movement of the prompting rod (5) is slidably on the housing (1). The locking block (6) is magnetic. A float (7) is slidably connected inside the housing (1). A magnet (21) is provided on the float (7). When the float (7) descends, the magnet (21) can drive the locking block (6) to slide, so that the locking block (6) releases the limitation on the prompting rod (5).

2. The antifreeze device for water conservancy and hydropower equipment according to claim 1, characterized in that, The indicator rod (5) slides along the vertical direction of the housing (1), and the indicator rod (5) has a slot (20) for the locking block (6) to slide into.

3. The antifreeze device for water conservancy and hydropower equipment according to claim 2, characterized in that, The card block (6) is fixed to the housing (1) by a spring (12). The magnetic force of the magnet (21) is greater than the elastic force of the spring (12). The magnet (21) can move the card block (6) out of the slot (20).

4. The antifreeze device for water conservancy and hydropower equipment according to claim 1, characterized in that, The initial height of the bottom surface of the indicator rod (5) is higher than the lower surface of the housing (1).

5. The antifreeze device for water conservancy and hydropower equipment according to claim 1, characterized in that, A rack (8) slides inside the housing (1), the plug (4) is fixed to the rack (8), a gear (9) meshes on one side of the rack (8), and the gear (9) is rotatably connected to the housing (1).

6. The antifreeze device for water conservancy and hydropower equipment according to claim 5, characterized in that, A power rod (10) is inserted through and rotatably connected to the housing (1). One end of the power rod (10) inserted into the housing (1) is slidably connected to a drive wheel (11). When the drive wheel (11) slides out of the power rod (10) and abuts against the gear (9), the power rod (10) can drive the gear (9) to rotate.

7. The antifreeze device for water conservancy and hydropower equipment according to claim 6, characterized in that, The valve body (2) has a water flow channel inside. The valve body (2) is threadedly connected to a valve stem (13). A valve core (14) that can block the water flow channel is fixed at the bottom end of the valve stem (13). A push rod (15) is fixed at the bottom end of the valve core (14). When the valve core (14) closes the water flow channel, the push rod (15) descends and drives the drive wheel (11) to slide out from the power rod (10).

8. The antifreeze device for water conservancy and hydropower equipment according to claim 7, characterized in that, A slide rod (16) is slidably connected inside the power rod (10). One end of the slide rod (16) is fixed to the power rod (10) by a tension spring (17), and the other end is fixed to the drive wheel (11).

9. A water conservancy and hydropower equipment antifreeze device according to claim 6, characterized in that, The gear (9) has several grooves (19) and the drive wheel (11) has several protrusions (18) fixed on it. The protrusions (18) cooperate with the grooves (19).

10. A water conservancy and hydropower equipment antifreeze device according to claim 6, characterized in that, A knob is fixedly connected to one end of the power rod (10) that protrudes from the housing (1).

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