Automatic control device for water supply of water tank

Abstract

The utility model relates to the field of water supply equipment, in particular to an automatic control device for water supply of a water tank, which comprises a water supply component, an elastic component and a carriage component, a water supply valve body and a water supply gate body arranged in the water supply valve body are arranged on the water supply component, valve holes are arranged on two sides of a valve seat of the water supply valve body, and a gate plate of the water supply gate body is provided with a water passing hole; the sliding frame assembly is provided with an upper touch pressing piece and a lower touch pressing piece, the water tank is connected into the sliding frame assembly in a sliding mode, the elastic assembly is used for pulling the water tank, the water tank moves up and down according to the weight change when water liquid in the water tank is reduced or increased, and the water supply gate body can abut against the upper touch pressing piece and the lower touch pressing piece to limit up-down movement. The water supply valve body continues to slide upwards or downwards to enable the valve holes in the two sides of the valve seat to be connected or disconnected, automatic water supply control over the water tank can be achieved without a complex transmission mechanism, and therefore the water supply control device is simple in structure and can conduct automatic water supply control over the water tank without external power. The control stability and the use convenience can be improved.

Description

Technical Field

[0001] The utility model relates to the field of water supply equipment, in particular to an automatic water supply control device for a water tank. Background Art

[0002] Some water facilities in many households need to be equipped with small water tanks to maintain the continuity of water supply and stable pressure. The current ways to replenish water tanks include manually controlling water supply with a manually controlled valve or manually starting an electric water pump, and automatically supplying water without power with a water inlet control device that uses a float control valve. Manually controlled water supply requires manual supervision, which is prone to the inconvenience of water shortage or water overflow; the method of automatically supplying water without power using a float control valve is prone to mechanism jamming and affecting the flexibility of opening and closing because the water supply control device involves some hinged transmission structures and unstable float drift. Therefore, people hope to have a water supply device with a simple structure and no need for external power for automatic control to automatically supply water to the water tank, so as to improve the stability of control and the convenience of use. In view of this, this case is generated. Utility Model Content

[0003] In order to overcome the deficiencies in the prior art, the utility model discloses an automatic water supply control device for a water tank, comprising a water supply component, an elastic component and a slide assembly, wherein the water supply component is provided with a water supply valve body and a water supply gate body, the valve seat of the water supply valve body is provided with a valve cavity and valve holes on both sides, the gate plate of the water supply gate body is provided with a water through hole and an upper push rod and a lower push rod are provided at the upper and lower ends of the gate plate, the gate plate is slidably embedded in the valve cavity of the valve seat and the valve holes on both sides of the valve seat can be communicated through the water through hole thereon; the water supply component is fixedly connected to the upper part of one side of the water tank and is communicated with the water tank; the slide assembly is provided with a guide rail, a fixed pulley and two upper and lower arranged The water tank is slidably connected in the carriage assembly; the elastic component is provided with a steel wire rope and a tension spring, the steel wire rope is passed around a fixed pulley, and its two ends are respectively connected to the tension spring and the water tank. The water tank can slide up and down according to the weight change when the water inside it decreases or increases and under the action of the elastic component, and can drive the water supply component fixed thereon to move upward or downward so that the upper and lower ends of the water supply gate body of the water supply component respectively contact with the pressure pieces arranged above and below the carriage assembly, and the water supply valve body can continue to slide upward or downward so that the valve holes on both sides of the valve seat of the water supply component are connected or disconnected to realize water supply control of the water tank. The utility model improves the automatic water supply control device of the water tank, and can realize automatic water supply control of the water tank without a complex transmission mechanism, so that the water supply control device has a simple structure and can automatically control the water supply of the water tank without external power, which can improve the stability of control and the convenience of use.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A water supply automatic control device for a water tank, which can control the water supply of the water tank, is characterized in that it includes a water supply component, an elastic component and a slide component, the water supply component is provided with a gate component with a through hole inside a valve seat component with a water inlet hole and a water outlet hole, the valve seat component or the gate component can slide relatively in the up and down directions under the action of external force and the water inlet hole and the water outlet hole of the valve seat component can be connected through the through hole on the gate component, the water supply component is fixedly connected to the upper part of one side of the water tank, the water inlet hole and the water outlet hole on the valve seat component can be connected to a public water source and the water tank respectively, the elastic component is provided with a flexible rope and a spring connected to one end of the flexible rope, the other end of the spring is connected to the slide component, the slide component is provided with two outwardly suspended contact pressure components on one side of the slide component, The water tank is slidably connected to the sliding track of the slide assembly, and the other end of the flexible rope of the elastic component can pass through the pulley group of the slide assembly and be fixedly connected to the upper end of the water tank. The water tank can slide up and down according to the weight change when the water inside it decreases or increases and under the action of the elastic component, and can drive the water supply assembly fixed thereon to move upward or downward so that the upper and lower ends of the gate member of the water supply assembly respectively contact with the contact and pressure members arranged above and below the slide assembly. When the gate member of the water supply assembly is contacted by the contact and pressure members arranged above and below the slide assembly, its valve body member can continue to slide upward or downward, so that the water inlet and the water outlet of the water supply assembly are connected or disconnected, so as to realize water supply control of the water tank.

[0006] The water supply assembly comprises a water supply valve body and a water supply gate body. The water supply gate body is slidably connected in a cavity arranged inside the water supply valve body and has two ends exposed.

[0007] The water supply valve body includes a valve seat, a left pipe head and a right pipe head. The valve seat is a block with a valve cavity and a valve hole inside. The valve cavity is a vertical rectangular cavity and the surface of the cavity is provided with a sealable and wear-resistant damping layer. The damping layer can be made of wear-resistant rubber or polyurethane. The upper and lower ends of the valve cavity are provided with guide holes that are connected to the outside. The guide holes at the upper and lower ends are concentric. The left and right sides of the valve cavity are provided with valve holes that are connected to the outside for water circulation. The valve holes on the left and right sides have the same diameter and are concentric. The left pipe head and the right pipe head are both rigid hollow tubes. The left pipe head and the right pipe head are respectively fixed to the left and right sides of the valve seat and are respectively connected to the valve holes on the left and right sides of the valve cavity. The right pipe head is fixed to the top of the water tank and is connected to the water tank.

[0008] The water supply gate body includes a gate plate, an upper push rod and a lower push rod. The gate plate is a vertical rectangular plate. The upper push rod and the lower push rod are both hard and smooth round rods. The upper push rod and the lower push rod are respectively fixed to the top and bottom of the gate plate. The upper push rod is concentric with the lower push rod. The upper push rod and the lower push rod are respectively matched with the guide holes at the upper and lower ends of the valve cavity of the valve seat. The upper push rod and the lower push rod can slide up and down in the guide holes at the upper and lower ends of the valve seat.

[0009] The water supply assembly also includes a seal, which is composed of two pieces. The two seals are respectively embedded in and fixedly connected to grooves set in the guide holes at the upper and lower ends of the valve seat. The upper push rod and the lower push rod can be sealed by the seal when sliding in the guide hole.

[0010] A water hole is provided on the upper part of the gate plate, and the aperture of the water hole is the same as the aperture of the valve hole of the valve seat. The width and thickness of the gate plate match the width and depth of the valve cavity of the valve seat. The height of the valve cavity of the valve seat is greater than the height of the gate plate. The gate plate is placed in the valve cavity of the valve seat. The valve seat or the gate plate can slide relatively in the up and down directions only under the action of external force.

[0011] When the gate plate is restricted from moving upward and the valve seat slides upward until the bottom of its valve cavity contacts the bottom of the gate plate, the water hole of the gate plate can be completely connected with the valve hole of the valve seat; when the gate plate is restricted from moving downward and the valve seat slides downward until the top of its valve cavity contacts the top of the gate plate, the gate plate can completely cover the valve hole of the valve seat.

[0012] The slide assembly includes a top plate, a bottom plate, a vertical plate, a cross plate and a guide rail. The vertical plate and the guide rail are each two pieces. The two vertical plates are vertically fixed between the top plate and the bottom plate and the two vertical plates are parallel to each other. The two guide rails are vertically fixed to the two vertical plates and the two guide rails are parallel to each other. The water tank is placed between the two guide rails and connected to the sliders provided on the guide rails. The cross plate is horizontally placed at the lower part of the slide assembly and fixed between the two vertical plates. A buffer rubber pad may be provided on the cross plate. After the water tank is filled with water, it can be moved down and placed on the cross plate.

[0013] The slide assembly also includes an upper touch-pressure piece, a lower touch-pressure piece and a fixed pulley. The upper touch-pressure piece and the lower touch-pressure piece are both semi-frame-shaped rigid components formed by a long plate and two short plates at the ends. The upper touch-pressure piece is placed above the lower touch-pressure piece and the two short plates are respectively fixedly connected to the sides of the two vertical plates. When the water supply assembly fixed to the water tank moves up and down, the upper touch-pressure piece and the lower touch-pressure piece can contact the upper push rod and the lower push rod on the gate plate to limit the gate plate from moving upward or downward. The fixed pulley is two pieces, and the two fixed pulleys are fixedly connected to the back center line of the top plate.

[0014] The elastic component includes a steel wire rope and a tension spring. The water tank and the tension spring are placed in the slide assembly and arranged on the left and right. The steel wire rope can slide in the wheel groove of the two fixed pulleys. The two ends of the steel wire rope are respectively connected to the tension spring and the water tank. The tension spring is fixed to the bottom plate of the slide assembly.

[0015] As can be seen from the above description, the advantages of the automatic water supply control device for a water tank provided by the utility model are: a water supply valve body fixedly connected to the water tank and a water supply gate body placed in the water supply valve body are provided on the water supply assembly, valve holes are provided on both sides of the valve seat of the water supply valve body, and the gate plate of the water supply gate body is provided with a water hole; an upper touch-pressure member and a lower touch-pressure member are arranged on one side of the slide assembly, the water tank is slidably connected in the slide assembly, the water tank is pulled by the elastic member and the water tank is moved up and down according to the weight change when the water inside the water tank is reduced or increased, the water supply gate body can be restrained from moving up and down by the upper touch-pressure member and the lower touch-pressure member, and the water supply valve body continues to slide up or down to make the valve holes on both sides of the valve seat connected or disconnected, and the water tank can be automatically supplied with water without a complex transmission mechanism, so that the water supply control device has a simple structure and can automatically supply water to the water tank without external power, which can improve the stability of control and the convenience of use. The utility model has a reasonable design, a simple structure, low cost, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a general schematic diagram of a water tank water supply automatic control device described in the utility model;

[0017] Figure 2 for Figure 1 A magnified schematic diagram of part A in FIG.

[0018] Figure 3 It is an enlarged view of the water supply valve body;

[0019] Figure 4 for Figure 3 BB enlarged schematic diagram in;

[0020] Figure 5 This is an enlarged view of the water supply gate body;

[0021] Figure 6 for Figure 5 The C-direction enlarged schematic diagram;

[0022] Figure 7 A schematic diagram of the positional relationship of the water supply assembly connected to the water tank;

[0023] Figure 8 is an enlarged schematic diagram of the carriage assembly;

[0024] Fig. 9 for Figure 8 DD enlarged schematic diagram in;

[0025] Fig.10 Schematic diagram of the state in which the water tank is filled with water and moved down to the lower position so that the water supply assembly is abutted by the lower contact and pressure piece;

[0026] Fig.11 for Fig.10 Enlarged schematic diagram of part E in FIG.

[0027] Reference numerals:

[0028] 1 water supply assembly; 11 water supply valve body; 111 valve seat; 1111 valve cavity; 1112 valve hole; 112 left pipe head; 113 right pipe head; 12 water supply gate body; 121 gate plate; 1211 water hole; 122 upper push rod; 123 lower push rod; 13 sealing member; 2 elastic assembly; 21 steel wire rope; 22 tension spring; 3 slide assembly; 31 top plate; 32 bottom plate; 33 vertical plate; 34 horizontal plate; 35 upper contact pressure member; 36 lower contact pressure member; 37 guide rail; 38 fixed pulley; 900 water tank. DETAILED DESCRIPTION

[0029] The present invention is further described below through specific implementation methods.

[0030] like Figure 1 , Figure 2 and Fig.10 , Fig.11As shown, an automatic water supply control device for a water tank described in the utility model can control the water supply of a water tank 900, and includes a water supply component 1, an elastic component 2 and a slide component 3. The water supply component 1 is provided with a gate component with a through hole inside a valve seat component with a water inlet hole and a water outlet hole, and its valve seat component or gate component can slide relatively in the up and down directions under the action of external force, and the water inlet hole and the water outlet hole of the valve seat component can be connected through the through hole on the gate component. The water supply component 1 is fixedly connected to the upper part of one side of the water tank 900, and the water inlet hole and the water outlet hole on the valve seat component can be connected to the public water source and the water tank 900 respectively. The elastic component 2 is provided with a flexible rope and a spring connected to one end of the flexible rope, and the other end of the spring is connected to the slide component 3. The slide component 3 is provided with two outwardly suspended contact pressure components on one side, and the two contact pressure components have two contact pressure components. The water tank 900 is slidably connected to the sliding track of the slide assembly 3, and the other end of the flexible rope of the elastic component 2 can pass through the pulley group of the slide assembly 3 and be fixedly connected to the upper end of the water tank 900. The water tank 900 can slide up and down according to the weight change when the water inside it decreases or increases and under the action of the elastic component 2, and can drive the water supply component 1 fixed thereon to move upward or downward so that the upper and lower ends of the gate member of the water supply component 1 respectively contact with the contact and pressure members arranged up and down on the slide assembly 3. When the gate member of the water supply component 1 is contacted by the contact and pressure members arranged up and down on the slide assembly 3, its valve body member can continue to slide upward or downward, so that the water inlet and the water outlet of the water supply component 1 are connected or disconnected, so as to realize water supply control for the water tank 900.

[0031] like Figures 1 to 7 , Fig.10 , Fig.11As shown, the water supply assembly 1 described in the utility model includes a water supply valve body 11, a water supply gate body 12 and a sealing member 13. The water supply gate body 12 is slidably connected in a cavity provided inside the water supply valve body 11 and its two ends are exposed. The water supply valve body 11 includes a valve seat 111, a left pipe head 112 and a right pipe head 113. The valve seat 111 is a block body with a valve cavity 1111 and a valve hole 1112 provided inside. The valve cavity 1111 is a vertical rectangular cavity and the surface of the cavity is provided with a sealable and wear-resistant damping layer. The damping layer can be made of wear-resistant rubber or polyurethane. The upper and lower ends of the valve cavity 1111 are provided with guide holes that are connected to the outside. The guide holes at the upper and lower ends are concentric. The left and right sides of the valve cavity 1111 are provided with valve holes 1112 that are connected to the outside. 112 is used for water circulation, the valve holes 1112 on the left and right sides are of the same diameter and concentric, the left pipe head 112 and the right pipe head 113 are both rigid hollow tubes, the left pipe head 112 and the right pipe head 113 are respectively fixedly connected to the left and right sides of the valve seat 111 and are respectively connected to the valve holes 1112 on the left and right sides of the valve cavity 1111, the right pipe head 113 is fixedly connected to the top of the water tank 900 and is connected to the water tank 900, the water supply valve body 11 can be made according to the left and right split structure, and then sealed and fixed after the water supply gate body 12 is installed. The water supply gate body 12 comprises a gate plate 121, an upper push rod 122 and a lower push rod 123. The gate plate 121 is a vertical rectangular plate. The upper push rod 122 and the lower push rod 123 are both hard and smooth round rods. The upper push rod 122 and the lower push rod 123 are respectively fixed to the top and bottom of the gate plate 121. The upper push rod 122 is concentric with the lower push rod 123. The upper push rod 122 and the lower push rod 123 are respectively matched with the guide holes at the upper and lower ends of the valve cavity 1111 of the valve seat 111. The upper push rod 122 and the lower push rod 123 can slide up and down in the guide holes at the upper and lower ends of the valve seat 111. The sealing member 13 is composed of two pieces. The two sealing members 13 are respectively embedded and fixed in the grooves provided in the guide holes at the upper and lower ends of the valve seat 111. When the upper push rod 122 and the lower push rod 123 slide in the guide holes, they can be sealed by the sealing member 13. A water hole 1211 is provided on the upper part of the gate plate 121, and the aperture of the water hole 1211 is the same as the aperture of the valve hole 1112 of the valve seat 111. The width and thickness of the gate plate 121 match the width and depth of the valve cavity 1111 of the valve seat 111. The height of the valve cavity 1111 of the valve seat 111 is greater than the height of the gate plate 121. The gate plate 121 is placed in the valve cavity 1111 of the valve seat 111. The valve seat 111 or the gate plate 121 can slide relatively in the up and down directions only under the action of external force.When the gate plate 121 is restricted from moving upward and the valve seat 111 slides upward until the bottom of its valve cavity 1111 contacts the bottom of the gate plate 121, the water hole 1211 of the gate plate 121 can be completely docked with the valve hole 1112 of the valve seat 111; when the gate plate 121 is restricted from moving downward and the valve seat 111 slides downward until the top of its valve cavity 1111 contacts the top of the gate plate 121, the gate plate 121 can completely cover the valve hole 1112 of the valve seat 111.

[0032] like Figures 1 to 11 As shown, the slide assembly 3 described in the utility model includes a top plate 31, a bottom plate 32, a vertical plate 33, a horizontal plate 34, an upper contact pressure piece 35, a lower contact pressure piece 36, a guide rail 37 and a fixed pulley 38. The vertical plate 33 and the guide rail 37 are both two pieces. The two vertical plates 33 are vertically fixed between the top plate 31 and the bottom plate 32 and the two vertical plates 33 are parallel to each other. The two guide rails 37 are vertically fixed on the two vertical plates 33 and the two guide rails 37 are parallel to each other. The water tank 900 is placed between the two guide rails 37 and is connected to the slider provided on the guide rails 37. The horizontal plate 34 is horizontally placed at the lower part of the slide assembly 3 and is fixed between the two vertical plates 33. A buffer rubber pad can be provided on the horizontal plate 34. After the water tank 900 is filled with water, it can be moved down and placed on the horizontal plate 34. The upper touch-pressure member 35 and the lower touch-pressure member 36 are both semi-frame-shaped rigid components formed by a long plate and two short plates at the ends. The upper touch-pressure member 35 is placed above the lower touch-pressure member 36 and the two short plates are respectively fixedly connected to the sides of the two vertical plates 33. When the water supply component 1 fixedly connected to the water tank 900 moves up and down, the upper touch-pressure member 35 and the lower touch-pressure member 36 can contact the upper push rod 122 and the lower push rod 123 on the gate plate 121 to limit the gate plate 121 from moving upward or downward. The fixed pulley 38 is two pieces, and the two fixed pulleys 38 are fixedly connected to the back center line of the top plate 31. The elastic component 2 includes a steel wire rope 21 and a tension spring 22. The water tank 900 and the tension spring 22 are both placed in the slide assembly 3 and arranged on the left and right. The steel wire rope 21 can slide in the wheel groove of the two fixed pulleys 38. The two ends of the steel wire rope 21 are respectively connected to the tension spring 22 and the water tank 900. The tension spring 22 is fixedly connected to the bottom plate 32 of the slide assembly 3.

[0033] The method of using the water tank water supply automatic control device described in the utility model is as follows:

[0034] The parameters of the tension spring 22 are set according to the maximum weight when the water tank 900 is filled with water to the upper limit and descends to the lower position and the minimum weight when the water level in the water tank 900 drops to the lower limit after the water is discharged and rises to the upper position; the position of the lower contact member 36 of the slide assembly 3 is set when the water tank 900 is filled with water to the maximum weight and is in the lower position and rests on the cross plate 34. The setting of this position is based on the lower contact member 36 abutting against the bottom of the lower push rod 123 of the water supply gate body 12. And the top of the gate plate 121 contacts the top of the valve cavity 1111 of the valve seat 111; when the water stored in the water tank 900 is gradually discharged to reduce the water level to the lowest limit, the water tank 900 is driven to the upper position under the elastic force of the tension spring 22, and the position of the upper contact and pressure member 35 of the slide assembly 3 is set. The setting of this position is based on the upper contact and pressure member 35 contacting the top of the upper push rod 122 of the water supply gate body 12 and the bottom of the gate plate 121 contacting the bottom of the valve cavity 1111 of the valve seat 111.

[0035] When the water tank 900 is in use, due to the reduction of water in the water tank 900 and the reduction of weight, the tension spring 22 drives the water tank 900 to rise until the water level in the water tank 900 drops to the lowest limit, and the water tank 900 rises to the upper position. At this time, the bottom of the gate plate 121 of the water supply gate body 12 abuts against the bottom of the valve cavity 1111 of the valve seat 111, and the water holes 1211 on the gate plate 121 are connected with the valve holes 1112 on both sides of the valve seat 111 to make the valve holes 1112 on both sides conduct, so that water can be supplied to the water tank; until the water in the water tank 900 is filled to the highest upper limit of the water level, the weight is maximum, causing the water tank 900 to drop to the lower position, driving the top of the gate plate 121 of the water supply gate body 12 to abut against the bottom of the valve cavity 1111 of the valve seat 111, and the gate plate 121 completely blocks the valve holes 1112 on both sides of the valve seat 111 to stop water inlet.

[0036] The utility model improves the automatic water supply control device of the water tank. A water supply valve body 11 fixedly connected to the water tank 900 and a water supply gate body 12 placed in the water supply valve body 11 are provided on the water supply assembly 1. Valve holes 1112 are provided on both sides of the valve seat 111 of the water supply valve body 11, and a gate plate 121 of the water supply gate body 12 is provided with a water passing hole 1211; an upper contact member 35 and a lower contact member 36 are arranged on one side of the slide assembly 3, and the water tank 900 is slidably connected in the slide assembly 3. The elastic component 2 is used to pull the water tank 900 and according to the water tank 90 0 when the weight of the water inside decreases or increases, so that the water tank 900 moves up and down. The water supply gate body 12 can be restrained by the upper contact and pressure member 35 and the lower contact and pressure member 36 to limit the up and down movement. The water supply valve body 11 continues to slide upward or downward to make the valve holes 1112 on both sides of the valve seat 111 connected or disconnected. The water supply control of the water tank 900 can be realized without a complicated transmission mechanism, so that the water supply control device has a simple structure and can automatically control the water supply of the water tank without external power, which can improve the stability of control and the convenience of use.

[0037] The above is only a specific embodiment of the present utility model, but the design concept of the present utility model is not limited to this. Any non-substantial changes to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A water tank water supply automatic control device, which can control the water supply of a water tank (900), characterized in that: The invention comprises a water supply component (1), an elastic component (2) and a slide component (3); the water supply component (1) is provided with a gate component with a through hole inside a valve seat component with a water inlet hole and a water outlet hole; the valve seat component or the gate component can slide relatively in the up and down directions under the action of an external force, and the water inlet hole and the water outlet hole of the valve seat component can be connected through the through hole on the gate component; the water supply component (1) is fixedly connected to the upper part of one side of a water tank (900); the water inlet hole and the water outlet hole on the valve seat component can be connected to a public water source and the water tank (900) respectively; the elastic component (2) is provided with a flexible rope and a spring connected to one end of the flexible rope; the other end of the spring is connected to the slide component (3); the slide component (3) is provided with an outward-facing Two suspended contact pressure components are arranged up and down and are respectively placed directly above and directly below the water supply component (1). The slide component (3) is also provided with a pulley group and a vertical sliding track. The water tank (900) is slidably connected to the sliding track of the slide component (3). The other end of the flexible rope of the elastic component (2) can pass through the pulley group of the slide component (3) and be fixedly connected to the upper end of the water tank (900). The water tank (900) can slide up and down according to the weight change when the water inside it decreases or increases and under the action of the elastic component (2), and can drive the water supply component (1) fixed thereon to move upward or downward so that the upper and lower ends of the gate component of the water supply component (1) respectively contact with the contact pressure components arranged up and down on the slide component (3).

2. The automatic water supply control device for a water tank according to claim 1, characterized in that: The water supply assembly (1) comprises a water supply valve body (11) and a water supply gate body (12); the water supply gate body (12) is slidably connected in a cavity arranged inside the water supply valve body (11) and has two ends exposed.

3. The automatic water supply control device for a water tank according to claim 2 is characterized in that: The water supply valve body (11) comprises a valve seat (111), a left pipe head (112) and a right pipe head (113); the valve seat (111) is a block having a valve cavity (1111) and a valve hole (1112) inside; the valve cavity (1111) is a vertical rectangular cavity and the surface of the cavity is provided with a sealable and wear-resistant damping layer; the upper and lower ends of the valve cavity (1111) are provided with guide holes that penetrate the outside; the guide holes at the upper and lower ends are concentric; the left and right ends of the valve cavity (1111) are provided with guide holes that penetrate the outside; The left and right sides of the valve seat (111) are provided with valve holes (1112) that are connected to the outside. The valve holes (1112) on the left and right sides have the same diameter and are concentric. The left pipe head (112) and the right pipe head (113) are both rigid hollow pipes. The left pipe head (112) and the right pipe head (113) are respectively fixedly connected to the left and right sides of the valve seat (111) and are respectively connected to the valve holes (1112) on the left and right sides of the valve cavity (1111). The right pipe head (113) is fixedly connected to the top of the water tank (900) and is connected to the water tank (900).

4. The automatic water supply control device for a water tank according to claim 3 is characterized in that: The water supply gate body (12) comprises a gate plate (121), an upper push rod (122) and a lower push rod (123). The gate plate (121) is a vertical rectangular plate body. The upper push rod (122) and the lower push rod (123) are both hard and smooth round rods. The upper push rod (122) and the lower push rod (123) are respectively fixed to the top and bottom of the gate plate (121). The upper push rod (122) and the lower push rod (123) are concentric. The upper push rod (122) and the lower push rod (123) are respectively matched with the guide holes at the upper and lower ends of the valve cavity (1111) of the valve seat (111). The upper push rod (122) and the lower push rod (123) can slide up and down in the guide holes at the upper and lower ends of the valve seat (111).

5. The automatic water supply control device for a water tank according to claim 4, characterized in that: The water supply assembly (1) further comprises a sealing member (13), wherein the sealing member (13) comprises two pieces, and the two sealing members (13) are respectively embedded in and fixedly connected to grooves provided in the guide holes at the upper and lower ends of the valve seat (111), and the upper push rod (122) and the lower push rod (123) can be sealed by the sealing member (13) when they slide in the guide holes.

6. The automatic water supply control device for a water tank according to claim 5, characterized in that: A water hole (1211) is provided on the upper part of the gate plate (121); the aperture of the water hole (1211) is the same as the aperture of the valve hole (1112) of the valve seat (111); the width and thickness of the gate plate (121) match the width and depth of the valve cavity (1111) of the valve seat (111); the height of the valve cavity (1111) of the valve seat (111) is greater than the height of the gate plate (121); the gate plate (121) is placed in the valve cavity (1111) of the valve seat (111); the valve seat (111) or the gate plate (121) can slide relative to each other in the up and down directions only under the action of an external force.

7. The automatic water supply control device for a water tank according to claim 6, characterized in that: When the gate plate (121) is restricted from moving upward and the valve seat (111) slides upward until the bottom of its valve cavity (1111) contacts the bottom of the gate plate (121), the water hole (1211) of the gate plate (121) can be completely connected with the valve hole (1112) of the valve seat (111); when the gate plate (121) is restricted from moving downward and the valve seat (111) slides downward until the top of its valve cavity (1111) contacts the top of the gate plate (121), the gate plate (121) can completely cover the valve hole (1112) of the valve seat (111).

8. The automatic water supply control device for a water tank according to claim 7, characterized in that: The slide assembly (3) comprises a top plate (31), a bottom plate (32), a vertical plate (33), a horizontal plate (34) and a guide rail (37); the vertical plate (33) and the guide rail (37) are both two pieces; the two vertical plates (33) are vertically fixedly connected between the top plate (31) and the bottom plate (32) and the two vertical plates (33) are parallel to each other; the two guide rails (37) are vertically fixedly connected to the two vertical plates (33) and the two guide rails (37) are parallel to each other; the water tank (900) is placed between the two guide rails (37) and is connected to a slider provided on the guide rail (37); the horizontal plate (34) is horizontally placed at the lower part of the slide assembly (3) and is fixedly connected between the two vertical plates (33).

9. The automatic water supply control device for a water tank according to claim 8, characterized in that: The slide assembly (3) further comprises an upper pressure piece (35), a lower pressure piece (36) and a fixed pulley (38). The upper pressure piece (35) and the lower pressure piece (36) are both semi-frame-shaped rigid components formed by a long plate and two short plates at the ends. The upper pressure piece (35) is placed above the lower pressure piece (36) and the two short plates are respectively fixedly connected to the sides of the two vertical plates (33). When the water supply assembly (1) fixedly connected to the water tank (900) moves up and down, the upper pressure piece (35) and the lower pressure piece (36) can contact the upper push rod (122) and the lower push rod (123) on the gate plate (121) to limit the gate plate (121) from moving upward or downward. The fixed pulley (38) consists of two pieces, and the two fixed pulleys (38) are fixedly connected to the back center line of the top plate (31).

10. The automatic water supply control device for a water tank according to claim 9, characterized in that: The elastic component (2) includes a steel wire rope (21) and a tension spring (22). The water tank (900) and the tension spring (22) are both placed in the slide assembly (3) and arranged on the left and right. The steel wire rope (21) can slide in the wheel groove of the two fixed pulleys (38). The two ends of the steel wire rope (21) are respectively connected to the tension spring (22) and the water tank (900). The tension spring (22) is fixedly connected to the bottom plate (32) of the slide assembly (3).

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