Remote control float valve

Abstract

The closure of the present invention is provided with a plurality of closure members, each of which is connected to a closure member and a plurality of closure members, each of which is connected to the closure member by a spring. The closure member is connected to the closure member by a spring. The closure member is connected to the closure member by a spring.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic control valves, and particularly relates to a remote control float valve. Background Art

[0002] A remote-controlled float valve is a hydraulic control valve that uses a small float valve to control the opening and closing of the main valve, achieving automatic control. This valve can effectively control the liquid level in a water tower, tank, or pool. The small float valve includes a float. When the water level in the water tower, tank, or pool rises to a set height, the float rises, closing the small float valve, which in turn pushes the main valve to close and stop the water supply. When the water level drops, the float drops, closing the small float valve, allowing the main valve to open again and resume water supply, ensuring a stable liquid level.

[0003] For use scenarios where liquid in water towers, water tanks or pools is consumed quickly, a main valve with a large flow rate is usually used. During the water replenishment and water use process, the water level fluctuates rapidly, causing the float to rise or fall frequently and sharply, and the up and down fluctuation range is large, which can easily damage the float and related linkage components, requiring frequent replacement, which is time-consuming and labor-intensive, and increases costs.

[0004] Therefore, the utility model patent application number 202323028688.8 discloses a remote control float valve stroke control system. This patent increases the control stroke of the remote control float valve, effectively reducing the switching frequency of the remote control float valve and the main valve, protecting the valve body, extending the service life of the valve body, and promoting water circulation in the water tower. However, this patent requires an additional water tank to be installed in the water tower, which is more troublesome to install. After installation, it is not convenient to adjust according to water usage habits. In addition, this patent requires a certain amount of installation space and is only suitable for larger water towers. Smaller water tanks or pools cannot provide sufficient installation space. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a remote control float valve which requires a smaller installation space than the prior art and is convenient for assembly and disassembly and adjustment.

[0006] A remote control float valve comprises a main valve and a small float valve, the small float valve comprises a valve body, a float ball, a connecting rod and a valve plug, the valve body comprises a valve cavity and a water outlet hole connected to the valve cavity, the valve plug is arranged in the valve cavity, the float ball and the valve plug are linked by a connecting rod, the valve body also comprises a limiting cavity, the limiting cavity is provided with a through hole one connected to the valve cavity, a through hole two connected to the outside world and a through hole three connected to the outside world, the connecting rod is connected to the valve plug through the through hole one, the connecting rod is passed through the through hole two; as the valve plug moves in the valve cavity, the connecting rod swings in the through hole two; a limiting block is provided in the limiting cavity, the connecting rod comprises a stationary surface one and a sliding surface arranged on the side away from the float ball one, the limiting block comprises an abutting surface and a back-facing surface The limiting surface of the abutment surface abuts against the inner wall of the limiting cavity, and a float 2 is provided on the side of the through hole 3 away from the inside of the limiting cavity, and the height of the float 2 is lower than that of the float 1. A linkage part is passed through the through hole 3 to link the float 2 and the limiting block, and a spring is provided between the limiting block and the through hole 3; the larger the area of ​​the valve plug covering the water outlet hole on the orifice of the valve cavity under the action of the connecting rod, the larger the gap between the connecting rod and the inner wall of the limiting cavity facing the limiting block; when the valve plug partially covers the orifice of the water outlet hole in the valve cavity under the action of the connecting rod, the abutment surface abuts against the sliding surface; when the valve plug completely covers the orifice of the water outlet hole in the valve cavity under the action of the connecting rod, the abutment surface abuts against the stationary surface 1.

[0007] In the above solution, the height of the second float is lower than that of the first float, which means that when the present invention is actually used, the second float is located on the side of the first float close to the ground. The following is the use of the present invention when installed in a pool:

[0008] If the linkage is a connecting rod made of a hard material, float 2 constantly applies force to the stop block through the linkage, with the spring providing a certain boost. When the water level in the pool is lower than float 2 or equal to its lowest point, float 2, through the linkage, keeps the stop block closest to through-hole 3. At this point, there is a gap between the abutting surface and the sliding surface, or the abutting surface and the sliding surface abut each other. As the water level rises, float 2 ascends, and float 2 applies force to the stop block through the linkage, causing the stop block to abut against the connecting rod. As the water level continues to rise until float 1 ascends, float 1 drives the connecting rod to rotate, increasing the gap between the connecting rod and the inner wall of the stop cavity facing the stop block. The stop block then continues to rise under the action of float 2, and the abutting surface abuts the sliding surface until the valve plug, under the action of the connecting rod, completely covers the orifice of the water outlet in the valve cavity, stopping water inflow to the main valve. At this point, the abutting surface abuts against stationary surface 1.

[0009] If the linkage is a linkage rope, as float ball 2 rises, the force exerted by float ball 2 on the stop block gradually decreases to zero, and the stop block moves upward under the action of the spring until the stop block abuts the connecting rod. When the water level rises to cause float ball 1 to float, float ball 1 drives the connecting rod to rotate, increasing the gap between the connecting rod and the inner wall of the stop cavity facing the stop block. At this time, the stop block continues to rise under the action of the spring, and the abutting surface abuts the sliding surface until the valve plug, under the action of the connecting rod, completely covers the orifice of the water outlet in the valve cavity, stopping water from entering the main valve. At this time, the abutting surface abuts the stationary surface 1.

[0010] When the water level in the pool is depleted to the point between float 1 and float 2, the stopper prevents float 1 from driving the connecting rod to rotate, causing the valve plug to completely cover the outlet opening in the valve cavity. This keeps the main valve closed until the water level drops to the point where float 2 is located. As the water level continues to drop, float 2 gradually decreases as the water level drops. Float 2, driven by the connector, drives the stopper downward, releasing the contact between the stopper surface and stationary surface 1. Float 1 then drives the connecting rod to move the valve plug, allowing the main valve to begin supplying water.

[0011] The present invention can reduce the frequent opening and closing of the small float valve and the main valve, reduce the frequency of violent fluctuations in the water body, reduce the wear of the small float valve, and extend its service life. The present invention can promote water circulation, help maintain water quality and effectively utilize water resources.

[0012] Compared with the prior art, the present invention does not require an additional water tank, is more convenient to assemble and disassemble, is also convenient to adjust later, requires less installation space, and is adaptable to more usage scenarios.

[0013] As a further configuration of the present invention, an extension end extending away from the limiting cavity is provided on the side of the through hole three facing away from the limiting cavity, the extension end is cylindrical and surrounds the orifice of the through hole three, the connecting part is a connecting rope or a connecting rod, and the connecting part is passed through the extension end; when the valve plug completely covers the water outlet hole located on the orifice of the valve cavity, the float two abuts against the port of the extension end away from the limiting cavity.

[0014] With this solution, the linkage rod is suitable for shallower water tanks, water towers, or pools, while the linkage rope is suitable for deeper water tanks, water towers, or pools. The extension end can be fixed with three threads in the through hole, allowing users to easily change the extension end to different lengths according to the application scenario. The extension end serves a certain limiting function. When the linkage element is a linkage rope, the extension end prevents the linkage rope from becoming entangled during the floating process of the second float. When the linkage element is a linkage rod, the extension end prevents the linkage rod from tilting during the floating process of the second float.

[0015] As a further configuration of the present invention, the linkage member is a linkage rope, the spring is sleeved on the linkage rope, and the limit block is a hollow block.

[0016] With the above solution, the shape of the limit block can reduce the weight of the limit block, so that the spring can better push the limit block to move.

[0017] As a further configuration of the present invention, the connecting member is a connecting rod, and the inner diameter of the extending end is larger than the diameter of the connecting member and smaller than twice the diameter of the connecting member.

[0018] With the above solution, the inner diameter of the extended end ensures that the connecting rod moves smoothly while preventing the connecting rod from deviating which would affect the movement of the connecting rod.

[0019] As a further configuration of the present invention, a placement groove for placing a spring is provided on the inner wall of the limiting cavity, the through hole three is provided at the bottom of the placement groove, the through hole three is coaxially arranged with the placement groove, and the two ends of the spring are respectively in contact with the limiting block and the bottom of the placement groove.

[0020] By adopting the above solution, the spring can be stably deformed.

[0021] As a further configuration of the present invention, the abutting surface and the stationary surface are both planes, and the sliding surface is an arc-shaped surface; when the abutting surface abuts the sliding surface, the abutting surface and the sliding surface are in line contact; when the valve plug completely covers the water outlet hole on the orifice of the valve cavity, the abutting surface is in one-side contact with the stationary surface.

[0022] With the above solution, the shape of the sliding surface facilitates the rotation of the connecting rod, and the shapes of the abutting surface and the stationary surface ensure the limiting effect of the limiting block.

[0023] As a further configuration of the present invention, the connecting rod also includes a second stationary surface, which is a plane, and the sliding surface is arranged between the first stationary surface and the second stationary surface; when the valve plug completely leaves the water outlet and is located at the orifice of the valve cavity, the abutting surface is in contact with the second stationary surface, or there is a gap between the abutting surface and the second stationary surface.

[0024] By adopting the above scheme, when the valve plug completely leaves the water outlet and is located at the orifice of the valve cavity, if the abutting surface and the stationary surface are in contact with each other, the stationary surface two enables the limit block to move more stably. If there is a gap between the abutting surface and the stationary surface two, the friction force on the limit block when it moves can be reduced.

[0025] As a further configuration of the present invention, an inclined blocking surface is provided on the wall of the through hole 2, and a blocking wall is provided in the valve cavity; when the valve plug abuts against the blocking wall, the connecting rod abuts against the blocking surface, and at the same time the valve plug completely leaves the water outlet and is located at the orifice of the valve cavity.

[0026] With the above solution, both the retaining wall and the retaining surface play a limiting role, and the connecting rod can be kept more stable, thereby extending the service life of the connecting rod.

[0027] As a further configuration of the present invention, the limiting surface and the inner wall of the limiting cavity facing the limiting surface are both arc-shaped surfaces.

[0028] The above solution plays a certain limiting role, allowing the limiting block to move along the axial direction of the through hole three.

[0029] As a further configuration of the present invention, the through hole one is an oblong hole or a rectangular hole extending along the sliding direction of the valve plug, the through hole two is an elongated strip hole extending along the swinging direction of the connecting rod, and the through hole three is a circular hole, and the aperture of the through hole three is consistent with the inner diameter of the extension end.

[0030] With the above solution, the shapes of through hole 1 and through hole 2 play a certain limiting role. Through hole 1 allows the valve plug to move along the extension direction of the valve cavity, through hole 2 facilitates the rotation of the connecting rod, and the shape of through hole 3 facilitates the movement of the linkage.

[0031] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Attachment Figure 1 This is a schematic diagram of a specific embodiment of the present invention when installed in an empty pool;

[0033] Attachment Figure 2 For attachment Figure 1 A magnified view of the Q part;

[0034] Attachment Figure 3 This is a schematic diagram of a specific embodiment of the present invention when the water level is between the first float and the second float;

[0035] Attachment Figure 4 This is a schematic diagram of the floating ball floating up according to the first specific embodiment of the present invention;

[0036] Attachment Figure 5 This is a schematic diagram of the interior of a valve body according to a specific embodiment of the present invention;

[0037] Attachment Figure 6 Schematic diagram of a limit block according to a specific embodiment of the present invention.

[0038] Main valve 1, small float valve 2, valve body 3, limit chamber 31, through hole 1 311, through hole 2 312, stop surface 3121, through hole 313, placement groove 314, valve chamber 32, stop wall 321, water outlet 33, float 1 4, connecting rod 5, stationary surface 1 51, sliding surface 52, stationary surface 2 53, valve plug 6, limit block 7, abutment surface 71, limit surface 72, float 2 8, linkage 9, spring 10, extension end A, water tank B DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise specified, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate description and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] Specific embodiments of the present invention are shown in the accompanying drawings.

[0042] Example 1: A remote control float valve, including a main valve 1 and a small float valve 2, the small float valve 2 includes a valve body 3, a float 1 4, a connecting rod 5 and a valve plug 6, the valve body 3 includes a limit cavity 31, a valve cavity 32 and a water outlet 33 connected to the valve cavity 32, the valve plug 6 is arranged in the valve cavity 32, the float 1 4 and the valve plug 6 are linked by the connecting rod 5, the limit cavity 31 is provided with a through hole 1 311 connected to the valve cavity 32, a through hole 2 312 connected to the outside world and a through hole 313 connected to the outside world, the connecting rod 5 is connected to the valve plug 6 through the through hole 1 311, and the connecting rod 5 is inserted into the through hole 2 312; as the valve plug 6 moves in the valve chamber 32, and the connecting rod 5 swings in the second through hole 312; a limiting block 7 is provided in the limiting chamber 31, and the connecting rod 5 includes a stationary surface 51 and a sliding surface 52 arranged on the side away from the float 4, and the limiting block 7 includes an abutting surface 71 and a limiting surface 72 facing away from the abutting surface 71, and the limiting surface 72 abuts against the inner wall of the limiting chamber 31, and a float 8 is provided on the side of the through hole 313 away from the inside of the limiting chamber 31, and the height of the float 8 is lower than that of the float 4. The height of the float 8 is lower than that of the float 4 means that when this embodiment is actually used, the float 8 is located on the side of the float 4 close to the ground. A linkage part 9 is passed through the through hole three 313 to link the float ball 2 8 and the limit block 7, and a spring 10 is provided between the limit block 7 and the through hole three 313; the larger the area of ​​the valve plug 6 covering the water outlet hole 33 on the opening of the valve cavity 32 under the action of the connecting rod 5, the larger the gap between the connecting rod 5 and the inner wall of the limit cavity 31 facing the limit block 7; when the valve plug 6 partially covers the opening of the water outlet hole 33 in the valve cavity 32 under the action of the connecting rod 5, the abutting surface 71 abuts against the sliding surface 52; when the valve plug 6 completely covers the opening of the water outlet hole 33 in the valve cavity 32 under the action of the connecting rod 5, the abutting surface 71 abuts against the stationary surface 1 51.

[0043] This embodiment is applied to a pool B. The linkage 9 is a linkage rope, and the spring 10 is mounted on the linkage rope. When the water level in the pool B is lower than the second float 8 or is level with the lowest point of the second float 8, the second float 8, through the linkage 9, keeps the stop block 7 closest to the third through-hole 313. At this point, a gap exists between the abutment surface 71 and the sliding surface 52. As the water level rises, the second float 8 rises, and the force exerted by the second float 8 on the stop block 7 gradually decreases to zero. The stop block 7 then moves upward under the action of the spring 10. The hollow structure of the stop block 7 reduces its weight, allowing the spring 10 to better push the stop block 7 until the stop block 7 abuts the connecting rod 5. The water level continues to rise until the float 4 floats up, and the float 4 drives the connecting rod 5 to rotate, so that the gap between the connecting rod 5 and the inner wall of the limit cavity 31 facing the limit block 7 increases. At this time, the limit block 7 continues to rise under the action of the spring 10. At this time, the abutting surface 71 abuts against the sliding surface 52 until the valve plug 6 completely covers the water outlet 33 on the opening of the valve cavity 32 under the action of the connecting rod 5, so that the main valve 1 stops water from entering. At this time, the abutting surface 71 abuts against the static surface 51.

[0044] When the water level in pool B is depleted to the point between float 1 4 and float 2 8 , the presence of stopper 7 prevents float 1 4 from driving connecting rod 5 to rotate, causing valve plug 6 to remain completely covering the opening of water outlet 33 in valve chamber 32 , keeping main valve 1 closed until the water level drops to the position of float 2 8 . After the water level in pool B continues to deplete to the point where float 2 8 is located, as the water level continues to drop, the height of float 2 8 gradually decreases. Float 2 8, under the action of the connector, drives stopper 7 downward, releasing the contact between stopper surface 72 and stationary surface 1 51 . Connecting rod 5, under the action of float 1 4 , drives valve plug 6 to move, causing main valve 1 to begin supplying water.

[0045] This embodiment can reduce the frequent opening and closing of the small float valve 2 and the main valve 1, and can also reduce the frequency of violent fluctuations in the water body, thereby reducing the wear of the small float valve 2 and extending its service life. This embodiment can promote water circulation, help maintain water quality and effectively utilize water resources.

[0046] Compared with the prior art, this embodiment does not require an additional water tank, is more convenient to assemble and disassemble, and is also convenient to adjust later. It requires less installation space and is adaptable to more usage scenarios.

[0047] An extension end A extending away from the limiting cavity 31 is provided on the side of the through hole three 313 facing away from the limiting cavity 31. The extension end A is cylindrical and surrounds the orifice of the through hole three 313. The linkage 9 is passed through the extension end A. When the valve plug 6 completely covers the water outlet hole 33 on the orifice of the valve cavity 32, the float 2 8 abuts against the end of the extension end A away from the limiting cavity 31.

[0048] The linkage rope is suitable for deeper water tanks, water towers, or pools B. Extension A mates with threaded holes 313, allowing users to easily adjust the length of extension A to suit specific applications. Extension A also acts as a stop, preventing the linkage rope from becoming tangled during the floating process of float 2 8.

[0049] The inner wall of the limiting cavity 31 is provided with a placement groove 314 for placing the spring 10. The third through hole 313 is provided at the bottom of the placement groove 314. The third through hole 313 and the placement groove 314 are arranged coaxially. The two ends of the spring 10 respectively abut against the limiting block 7 and the bottom of the placement groove 314, so that the spring 10 can be deformed stably.

[0050] The abutting surface 71 and the stationary surface 1 51 are both flat, while the sliding surface 52 is an arcuate surface. When the abutting surface 71 and the sliding surface 52 abut, they form a line contact. When the valve plug 6 completely covers the opening of the water outlet 33 in the valve cavity 32, the abutting surface 71 and the stationary surface 1 51 form a surface contact. The shape of the sliding surface 52 facilitates the rotation of the connecting rod 5, while the shapes of the abutting surface 71 and the stationary surface 1 51 ensure the limiting effect of the stopper 7.

[0051] The connecting rod 5 also includes an inclined second stationary surface 53, which is a flat surface. The sliding surface 52 is disposed between the first stationary surface 51 and the second stationary surface 53. In this embodiment, when the valve plug 6 is completely removed from the water outlet 33 and located at the opening of the valve cavity 32, a gap exists between the abutment surface 71 and the second stationary surface 53, thereby reducing the frictional force applied to the stopper 7 during movement. Depending on the design, the abutment surface 71 can also be designed so that when the valve plug 6 is completely removed from the water outlet 33 and located at the opening of the valve cavity 32, the abutment surface 71 contacts the second stationary surface 53, thereby ensuring more stable movement of the stopper 7.

[0052] An inclined stop surface 3121 is provided on the wall of the second through hole 312, and a stop wall 321 is provided within the valve cavity 32. When the valve plug 6 abuts the stop wall 321, the connecting rod 5 abuts the stop surface 3121, and the valve plug 6 completely leaves the water outlet 33 and is located at the opening of the valve cavity 32. The stop wall 321 and the stop surface 3121 both act as limiters, ensuring that the connecting rod 5 remains more stable, thereby extending the service life of the connecting rod 5.

[0053] The limiting surface 72 and the inner wall of the limiting cavity 31 facing the limiting surface 72 are both arc-shaped surfaces, which play a certain limiting role and enable the limiting block 7 to move along the axial direction of the through hole 313.

[0054] Through hole 1 311 is an oblong hole extending in the sliding direction of valve plug 6. The oblong shape is composed of two semicircles and a square. Through hole 2 312 is an elongated strip-shaped hole extending in the swinging direction of connecting rod 5. Through hole 3 313 is a circular hole, the diameter of which matches the inner diameter of extension end A. The shapes of through holes 1 311 and 2 312 serve a certain limiting function. Through hole 1 311 allows valve plug 6 to move along the extension direction of valve cavity 32, while through hole 2 312 facilitates the rotation of connecting rod 5. The shape of through hole 313 facilitates the movement of linkage 9.

[0055] Example 2: Example 2 differs from Example 1 in that the connecting member 9 is a connecting rod made of a hard material, and the inner diameter of the extension end A is larger than the diameter of the connecting member 9 but less than twice the diameter of the connecting member 9. The connecting rod is suitable for shallow water tanks, water towers, or pools B. The inner diameter of the extension end A ensures smooth movement of the connecting rod while preventing the connecting rod from tilting to one side during the floating process of the second float ball 8, preventing the connecting rod from deflecting and affecting its movement.

[0056] When this embodiment is used in the pool B, the float 8 always applies force to the limit block 7 through the linkage 9, and the spring 10 plays a certain auxiliary role.

[0057] When the water level in pool B is below float 8 or equal to its lowest point, stopper 7 remains in contact with the opening of through hole 313 in stopper cavity 31 as float 8 passes through linkage 9. A gap exists between abutment surface 71 and sliding surface 52. As the water level rises, float 8 ascends, exerting force on stopper 7 via linkage 9, causing it to abut against connecting rod 5. When the water level rises enough to cause float 1 (4) to ascend, float 1 (4) drives connecting rod 5 to rotate, increasing the gap between connecting rod 5 and the inner wall of stopper cavity 31 facing stopper 7. Stopper 7 continues to rise under the action of float 8, causing abutment surface 71 to abut against sliding surface 52. This occurs until valve plug 6, under the action of linkage 5, completely covers the opening of outlet hole 33 in valve cavity 32, stopping water inflow to main valve 1. At this point, abutment surface 71 abuts against stationary surface 1 (51).

[0058] When the water level in pool B is depleted to the point between float 1 4 and float 2 8 , the presence of stopper 7 prevents float 1 4 from driving connecting rod 5 to rotate, causing valve plug 6 to remain completely covering the opening of water outlet 33 in valve chamber 32 , keeping main valve 1 closed until the water level drops to the position of float 2 8 . After the water level in pool B continues to deplete to the point where float 2 8 is located, as the water level continues to drop, the height of float 2 8 gradually decreases. Float 2 8, under the action of the connector, drives stopper 7 downward, releasing the contact between stopper surface 72 and stationary surface 1 51 . Connecting rod 5, under the action of float 1 4 , drives valve plug 6 to move, causing main valve 1 to begin supplying water.

[0059] The present invention is not limited to the above-mentioned specific embodiments. Those skilled in the art can implement the present invention in various other specific embodiments based on the contents disclosed in the present invention, or any simple changes or modifications made to the design structure and concept of the present invention fall within the scope of protection of the present invention.

Claims

1. A remote-controlled float valve comprising a main valve and a small float valve, wherein the small float valve comprises a valve body, a first float, a connecting rod, and a valve plug. The valve body comprises a valve cavity and a water outlet communicating with the valve cavity. The valve plug is disposed within the valve cavity. The first float and the valve plug are linked by a connecting rod. The valve is characterized in that: The valve body also includes a limiting cavity, which is provided with a through hole 1 connected to the valve cavity, a through hole 2 connected to the outside world, and a through hole 3 connected to the outside world. The connecting rod is connected to the valve plug through the through hole 1, and the connecting rod is arranged in the through hole 2; as the valve plug moves in the valve cavity, the connecting rod swings in the through hole 2; a limiting block is provided in the limiting cavity, and the connecting rod includes a stationary surface 1 and a sliding surface arranged on the side away from the float 1; the limiting block includes a contact surface and a limiting surface facing away from the contact surface; the limiting surface abuts against the inner wall of the limiting cavity, and the through hole 3 is provided with a float on the side away from the inside of the limiting cavity.

2. The height of the float 2 is lower than that of the float 1. A linkage part is passed through the through hole 3 to link the float 2 and the limit block, and a spring is provided between the limit block and the through hole 3. The larger the area of ​​the valve plug covering the water outlet hole on the orifice of the valve cavity under the action of the connecting rod, the larger the gap between the connecting rod and the inner wall of the limit cavity facing the limit block. When the valve plug partially covers the orifice of the water outlet hole in the valve cavity under the action of the connecting rod, the abutting surface abuts against the sliding surface. When the valve plug completely covers the orifice of the water outlet hole in the valve cavity under the action of the connecting rod, the abutting surface abuts against the stationary surface 1.

2. A remote control float valve according to claim 1, characterized in that: An extension end extending away from the limiting cavity is provided on a side of the through hole three facing away from the limiting cavity. The extension end is cylindrical and surrounds the opening of the through hole three. The linkage member is a linkage rope or a linkage rod, and the linkage member is passed through the extension end. When the valve plug completely covers the water outlet hole on the opening of the valve cavity, the second float abuts against the port of the extended end away from the limiting cavity.

3. A remote control float valve according to claim 2, characterized in that: The linkage member is a linkage rope, the spring is sleeved on the linkage rope, and the limit block is a hollow block.

4. A remote control float valve according to claim 2, characterized in that: The connecting piece is a connecting rod, and the inner diameter of the extending end is larger than the diameter of the connecting piece and smaller than twice the diameter of the connecting piece.

5. A remote control float valve according to claim 3 or 4, characterized in that: A placement groove for placing a spring is provided on the inner wall of the limiting cavity, and the through hole three is provided at the bottom of the placement groove. The through hole three is coaxially arranged with the placement groove, and the two ends of the spring are respectively in contact with the limiting block and the bottom of the placement groove.

6. A remote control float valve according to claim 5, characterized in that: The abutting surface and the stationary surface are both planes, and the sliding surface is an arc-shaped surface; when the abutting surface abuts the sliding surface, the abutting surface and the sliding surface are in line contact; when the valve plug completely covers the orifice of the water outlet hole located in the valve cavity, the abutting surface and the stationary surface are in one-sided contact.

7. A remote control float valve according to claim 6, characterized in that: The connecting rod also includes a second stationary surface, which is a plane, and the sliding surface is arranged between the first stationary surface and the second stationary surface; when the valve plug completely leaves the water outlet and is located at the orifice of the valve cavity, the abutting surface is in contact with the second stationary surface, or there is a gap between the abutting surface and the second stationary surface.

8. The remote control float valve according to claim 7, characterized in that: An inclined blocking surface is provided on the wall of the second through hole, and a blocking wall is provided in the valve cavity; when the valve plug abuts against the blocking wall, the connecting rod abuts against the blocking surface, and at the same time the valve plug completely leaves the water outlet and is located at the orifice of the valve cavity.

9. The remote control float valve according to claim 8, characterized in that: The limiting surface and the inner wall of the limiting cavity facing the limiting surface are both arc-shaped surfaces.

10. The remote control float valve according to claim 9, characterized in that: The through hole one is an oblong hole or a rectangular hole extending along the sliding direction of the valve plug, the through hole two is an elongated strip hole extending along the swinging direction of the connecting rod, and the through hole three is a circular hole, the aperture of the through hole three is consistent with the inner diameter of the extension end.

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