A dual-level control device for a water tank

Abstract

The present invention discloses a double liquid level control device for a water tank, which comprises a water tank with a main water inlet pipe connected to one side, and a water outlet pipe connected to the lower part of the water tank; a secondary float valve ball, placed in the water tank and connected with a secondary water inlet pipe, the flow rate of the secondary water inlet pipe being smaller than that of the main water inlet pipe, the secondary float valve ball opening as the liquid level in the water tank drops, and replenishing water into the water tank through the secondary water inlet pipe; a remote control float valve ball, which comprises a main valve and a main float ball pilot valve, the main valve being arranged on the main water inlet pipe, the main float ball pilot valve being placed in the water tank and below the secondary float valve ball, the main float ball pilot valve controlling the opening and closing of the main valve, the main float ball pilot valve opening as the liquid level in the water tank drops, and starting the main valve to make the main water inlet pipe replenish water into the water tank. According to the double liquid level control device for a water tank provided by the present invention, the swinging amplitude of the float ball equipped with the float valve ball is reduced, the loss is reduced, and at the same time, the frequent opening and closing of the main valve can be prevented, and the service life of the main valve is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid level control, and particularly to a dual liquid level control device for a water tank. Background Art

[0002] The hydraulic float valve is an important automatic water replenishing device for current water tanks or reservoirs. This valve adopts the form of a combination of a main valve and a float pilot valve. The float pilot valve is installed in the water tank and automatically opens and closes according to the water level change, thereby controlling the opening and closing of the main valve and dynamically replenishing the water level in the water tank.

[0003] The traditional installation position of the float pilot valve is at a high water level slightly lower than the overflow port in the water tank. Once the water level drops slightly, the main valve is opened by the opening of the pilot valve to replenish water into the water tank. The water level in the water tank fluctuates rapidly, resulting in the float pilot valve often rising or falling sharply, and the swing amplitude of the float is too large, which easily damages the float and related linkage components; the main valve opens and closes frequently to intake water, causing the float floating on the water surface to swing significantly frequently, which will also cause the pilot valve to be damaged or the float to break away, rendering the valve ineffective. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a dual liquid level control device for a water tank, which reduces the swing amplitude of the float valve up and down, reduces losses, and can prevent the main valve from opening and closing frequently, thereby prolonging the service life of the main valve.

[0005] A dual liquid level control device for a water tank according to an embodiment of the first aspect of the present invention includes a water tank, a main water inlet pipe is connected to one side, and a water outlet pipe is connected to the lower part of the water tank; a secondary float valve is placed in the water tank and is connected to a secondary water inlet pipe, the flow rate of the secondary water inlet pipe is less than that of the main water inlet pipe, and the secondary float valve opens as the liquid level in the water tank drops, and replenishes water into the water tank through the secondary water inlet pipe; a remote control float valve includes a main valve and a main float pilot valve, the main valve is arranged on the main water inlet pipe, the main float pilot valve is placed in the water tank and is below the secondary float valve, the main float pilot valve controls the opening and closing of the main valve, and the main float pilot valve opens as the liquid level in the water tank drops, and starts the main valve to replenish water into the water tank through the main water inlet pipe.

[0006] A dual liquid level control device for a water pool according to an embodiment of the present invention has at least the following technical effects: when using water, the water level in the water pool starts to drop from the high liquid level, the auxiliary float valve opens, and water flows into the water pool through the auxiliary water inlet pipe to replenish water. Since the flow rate of the auxiliary water inlet pipe is small and the water level fluctuation is small, the swing amplitude of the float equipped with the auxiliary float valve is small and not easy to be damaged; when the water consumption is too large, the water replenishment amount of the auxiliary water inlet pipe is less than the water consumption, and the liquid level in the water pool continues to drop to the low liquid level where the main float guide valve is located. The water level continues to drop, the main float guide valve opens, driving the main valve to open, and the main water inlet pipe and the auxiliary water inlet pipe replenish water into the water pool together to meet the peak water demand. The auxiliary float valve and the remote control float valve are used together to make the water pool store water in time, and at the same time prevent the main valve from opening and closing frequently, thereby extending the service life of the main valve.

[0007] According to some embodiments of the present invention, one end of the main valve is communicated with the end of the main water inlet pipe, and the other end is connected to the water supply main pipe.

[0008] According to some embodiments of the present invention, one end of the auxiliary water inlet pipe away from the auxiliary float valve is connected to the water supply main pipe.

[0009] According to some embodiments of the present invention, the main valve includes a valve body, a valve core and a diaphragm seat. The diaphragm seat is connected to the valve body to form an inner cavity. The inner cavity is provided with two connecting ports and is respectively connected to the main water inlet pipe and the water supply main pipe. The valve core is movably arranged at one of the connecting ports to control the connection between the main water inlet pipe and the water supply main pipe. The main float guide valve controls the opening and closing of the main valve by controlling the movement of the valve core.

[0010] According to some embodiments of the present invention, the valve core is arranged at a corresponding connection port of the water supply main pipe.

[0011] According to some embodiments of the present invention, the valve core has a V-shaped regulating opening so that the size of the flow channel changes gradually when the main valve is opened and closed, so as to reduce the pressure disturbance to the water supply main pipe 111.

[0012] According to some embodiments of the present invention, the main valve further comprises a valve stem, the diaphragm seat is provided with a guide hole matching the valve stem, the valve stem is partially inserted into the guide hole and can slide along the guide hole, and one end of the valve stem is connected to the valve core.

[0013] According to some embodiments of the present invention, a diaphragm cover is provided on the side of the diaphragm seat facing away from the valve core, a diaphragm is sandwiched between the diaphragm cover and the diaphragm seat, one end of the valve stem away from the valve core is connected to the diaphragm, a sensing chamber is formed between the diaphragm and the diaphragm cover, the sensing chamber is connected to a water supply main pipe so that pressure medium can flow from the water supply main pipe into the sensing chamber, the sensing chamber is connected to the main float pilot valve, and the pressure difference between the sensing chamber and the water supply main pipe below the valve core is changed by opening and closing the main float pilot valve to control the valve core to float up and down.

[0014] According to some embodiments of the present invention, an air cavity is formed between the diaphragm seat and the diaphragm, and the air cavity is communicated with external air.

[0015] According to some embodiments of the present invention, the contact area between the diaphragm and the pressure medium in the sensing cavity is larger than the contact area between the valve core and the pressure medium in the water supply main pipe.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1 is a schematic diagram of the installation structure of an embodiment of the present invention;

[0019] Figure 2 is Figure 1 an enlarged view of part A in

[0020] Figure 3 is Figure 2 a schematic diagram of the structure of the valve core in

[0021] Figure 4 is a schematic diagram of the usage state of an embodiment of the present invention.

[0022] Reference numerals:

[0023] Pool 100, main water inlet pipe 110, water supply main pipe 111, circulation pipe 112, water outlet pipe 120;

[0024] Auxiliary float valve 200, auxiliary water inlet pipe 210;

[0025] Remote control float valve 300, inner cavity 301, sensing cavity 302, air cavity 303, main valve 310, valve body 311, valve core 312, diaphragm seat 313, valve stem 314, diaphragm 315, guide hole 316, V-shaped adjustment opening 317, diaphragm cover 318, main float ball pilot valve 320, float ball conduit 321;

[0026] High water storage level 400, guaranteed water storage level 410. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where 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 by referring to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Referring to Figure 1 、 Figure 4 A double-level control device for a water tank according to an embodiment of the present invention includes a water tank 100, a secondary float ball valve 200, and a remote control float ball valve 300.

[0031] The water tank 100 has an opening at the top, and a main water inlet pipe 110 is connected to one side of the water tank 100, and a water outlet pipe 120 is connected to the lower part of the water tank 100.

[0032] The secondary float ball valve 200 is placed inside the water tank 100 and is connected with a secondary water inlet pipe 210. The flow rate of the secondary water inlet pipe 210 is less than that of the main water inlet pipe 110. The secondary float ball valve 200 is opened as the liquid level in the water tank 100 drops, and water is replenished into the water tank 100 through the secondary water inlet pipe 210.

[0033] The remote control float ball valve 300 includes a main valve 310 and a main float ball pilot valve 320. The main valve 310 is arranged on the main water inlet pipe 110. The main float ball pilot valve 320 is placed inside the water tank 100 and below the secondary float ball valve 200. The main float ball pilot valve 320 is connected to the main valve 310 through a float ball conduit 321. The opening and closing of the main float ball pilot valve 320 can control the opening and closing of the main valve 310. The main float ball pilot valve 320 is opened as the liquid level in the water tank 100 drops, and the main valve 310 is started to make the main water inlet pipe 110 replenish water into the water tank 100.

[0034] Referring to Figure 1 、Figure 4 The auxiliary float ball valve 200 is located at the high water storage level 400 in the water tank 100, and the main float ball pilot valve 320 is located at the water storage guarantee level 410 in the water tank 100. When the water level starts to drop from the high water storage level 400 but has not dropped to the water storage guarantee level 410, the auxiliary float ball valve 200 is in the open state, and water flows into the water tank 100 through the auxiliary water inlet pipe 210 for water replenishment. Since the flow rate of the auxiliary water inlet pipe 210 is small, the water level fluctuation in the water tank 100 is small. Therefore, the water inlet disturbance of the auxiliary float ball valve 200 is small, the swing amplitude of the equipped float ball is small, and it is not easily damaged.

[0035] Refer to Figure 4 When entering the peak water consumption period, due to excessive water consumption, the water replenishment volume of the auxiliary water inlet pipe 210 is less than the water consumption volume, and the water level continues to drop to the water storage guarantee level 410 and continues to drop. The main float ball pilot valve 320 opens, driving the main valve 310 to open. The main water inlet pipe 110 and the auxiliary water inlet pipe 210 replenish water into the water tank 100 together. Under the action of both, the water level in the water tank 100 continues to rise. After the water level is higher than the water storage guarantee level 410, the main float ball pilot valve 320 closes, causing the main valve 310 to also close. The main valve 310 stops replenishing water into the water tank 100. At this time, the auxiliary float ball valve 200 remains open, and the auxiliary water inlet pipe 210 replenishes water until the water level returns to the high water storage level 400, and the auxiliary float ball valve 200 closes. The water tank 100 is filled with water for reserve for the next peak water consumption period.

[0036] The auxiliary float ball valve 200 and the remote control float ball valve 300 are used together, which can automatically adjust the water storage volume in the water tank 100 during the peak water consumption period to meet the water use demand of the user side. After entering the normal and low peak periods, the auxiliary float ball valve 200 continues to replenish water to fill the water tank 100, realizing the storage during the low peak period, so that the water tank 100 realizes the regulation function of "peak shaving and valley filling". The main float ball pilot valve 320 is mostly submerged in water and remains closed, only opening when the water level drops to the water storage guarantee level 410, reducing the operation time of the remote control float ball valve 300 and avoiding frequent opening and closing of the main valve 310, thereby prolonging the service life of the main valve 310.

[0037] Refer to Figure 1 In some specific embodiments of the present invention, one end of the main valve 310 is communicated with the end of the main water inlet pipe 110, and the other end is connected with a water supply main pipe 111.

[0038] In a further embodiment of the present invention, the end of the auxiliary water inlet pipe 210 away from the auxiliary float ball valve 200 is connected to the water supply main pipe 111.

[0039] Refer to Figure 2, in some specific embodiments of the present invention, the main valve 310 includes a valve body 311, a valve core 312, and a diaphragm seat 313. The diaphragm seat 313 is connected to the valve body 311 to enclose an inner cavity 301. The inner cavity 301 is provided with two connection ports and is respectively communicated with the main water inlet pipe 110 and the water supply main pipe 111. The valve core 312 is movably arranged at one of the connection ports to control the communication between the main water inlet pipe 110 and the water supply main pipe 111. The main float pilot valve 320 controls the opening and closing of the main valve 310 by controlling the movement of the valve core 312.

[0040] In a further embodiment of the present invention, the valve core 312 is arranged at the connection port corresponding to the water supply main pipe 111. Preferably, a sealing ring is arranged around the valve core 312.

[0041] Refer to Figure 3 , in a further embodiment of the present invention, the valve core 312 has a V-shaped adjustment opening 317, and the opening faces the water supply main pipe 111, so that the size of the flow channel gradually changes when the main valve 310 is opened and closed, avoiding instantaneous opening and closing during the operation of the main valve 310, reducing the pressure disturbance in the water supply main pipe 111, improving the use safety of the main valve 310, and extending the service life.

[0042] Refer to Figure 2 , in a further embodiment of the present invention, the main valve 310 further includes a valve stem 314. The diaphragm seat 313 is provided with a guide hole 316 matching the valve stem 314. The valve stem 314 is partially inserted into the guide hole 316 and can slide along the guide hole 316. One end of the valve stem 314 is connected to the valve core 312, and the valve stem 314 provides a sliding guiding function for the valve core 312. Refer to Figure 2 , in a further embodiment of the present invention, a diaphragm cover 318 is provided on the side of the diaphragm seat 313 facing away from the valve core 312. A diaphragm 315 is clamped between the diaphragm cover 318 and the diaphragm seat 313. One end of the valve stem 314 away from the valve core 312 is connected to the diaphragm 315, and the fixing point of the valve stem 314 and the diaphragm 315 is located at the center of the diaphragm 315; the periphery of the diaphragm 315 is fixedly connected to the diaphragm seat 313, preferably by bolt connection. The connection between the valve stem 314 and the diaphragm seat 313 is the same. When the diaphragm 315 is damaged, it is convenient to replace the new diaphragm 315.

[0043] An induction cavity 302 is formed between the diaphragm 315 and the diaphragm cover 318. The induction cavity 302 is communicated with the water supply main pipe 111 through a flow pipe 112, so that a pressure medium (water) can flow from the water supply main pipe 111 into the induction cavity 302 through the water supply main pipe 111; the induction cavity 302 is communicated with the main float pilot valve 320 through a float conduit 321. By opening and closing the main float pilot valve 320, the pressure difference between the induction cavity 302 and the lower part of the valve core 312 in the water supply main pipe 111 is changed to control the up and down floating of the valve core 312. Specifically, control valves for controlling the flow are provided on both the water supply main pipe 111 and the float conduit 321.

[0044] In a further embodiment of the present invention, the diaphragm 315 and the diaphragm seat 313 form an air chamber 303 and communicate with the external air.

[0045] In a further embodiment of the present invention, the contact area of the diaphragm 315 with the pressure medium in the induction chamber 302 is larger than the contact area of the valve core 312 with the pressure medium in the water supply main pipe 111.

[0046] When the main float ball pilot valve 320 is opened, the downward pressure on the induction chamber 302 is less than the upward force on the valve core 312. The water flow pressure in the water supply main pipe 111 pushes the valve core 312 upward, and the main valve 310 opens; when the hydraulic pressure in the induction chamber 302 is equal to the hydraulic pressure in the water supply main pipe 111, since the area of the diaphragm 315 is larger than the area of the valve core 312, the downward pressure on the induction chamber 302 is greater than the upward force on the valve core 312. The diaphragm 315 pushes the valve core 312 downward through the valve stem 314, and the main valve 310 closes.

[0047] The implementation principle of the present invention is: Refer to Figure 1 , during the off-peak period, the water volume in the water tank 100 is sufficient, and the water level remains in the vicinity of the high water storage level 400. The auxiliary float ball valve 200 is closed, the main float ball pilot valve 320 is submerged in water and remains closed, and the main valve 310 is closed.

[0048] When the water level starts to drop, the auxiliary float ball valve 200 opens, and water is introduced through the auxiliary water inlet pipe 210 to supplement the water tank 100. The main float ball pilot valve 320 is closed, and the main valve 310 is closed.

[0049] Refer to Figure 4 , during the peak water consumption period, when the water level drops to the water storage guarantee level 410 and continues to drop, the auxiliary float ball valve 200 remains open, the main float ball pilot valve 320 opens, the water in the induction chamber 302 is discharged through the main float ball pilot valve 320, the hydraulic pressure in the induction chamber 302 decreases, the hydraulic pressure in the induction chamber 302 is less than the hydraulic pressure in the water supply main pipe 111, and the water flow pressure in the water supply main pipe 111 pushes the valve core 312 upward, causing the main valve 310 to open. The auxiliary water inlet pipe 210 and the main water inlet pipe 110 supply water to the water tank 100 together.

[0050] When the water level continues to rise, after the water level in the water tank 100 is higher than the water storage guarantee level 410, the main float ball pilot valve 320 is closed, the hydraulic pressure in the induction chamber 302 increases, the hydraulic pressure in the induction chamber 302 gradually becomes equal to the hydraulic pressure in the water supply main pipe 111, and the diaphragm 315 pushes the valve core 312 downward through the valve stem 314, causing the main valve 310 to close.

[0051] The auxiliary float ball valve 200 remains open, and only the auxiliary water inlet pipe 210 supplies water to the water tank 100 until the water level returns to the high water storage level 400, and the auxiliary float ball valve 200 closes.

[0052] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0053] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A double-level control device for a water tank, characterized in that Comprising: A water tank (100), with a main water inlet pipe (110) connected to one side, and a water outlet pipe (120) connected to the lower part of the water tank (100); A secondary float valve (200), placed inside the water tank (100), connected to a secondary water inlet pipe (210), the flow rate of the secondary water inlet pipe (210) being less than that of the main water inlet pipe (110), the secondary float valve (200) opening as the liquid level in the water tank (100) drops, and replenishing water into the water tank (100) through the secondary water inlet pipe (210); A remote control float valve (300), including a main valve (310) and a main float ball pilot valve (320), the main valve (310) being arranged on the main water inlet pipe (110), the main float ball pilot valve (320) being placed inside the water tank (100) and below the secondary float valve (200), the main float ball pilot valve (320) controlling the opening and closing of the main valve (310), the main float ball pilot valve (320) opening as the liquid level in the water tank (100) drops, and starting the main valve (310) to make the main water inlet pipe (110) replenish water into the water tank (100); The secondary float valve (200) is located at the high water storage level (400) inside the water tank (100), and the main float ball pilot valve (320) is located at the water storage guarantee level (410) inside the water tank (100).

2. The dual liquid level control device for a pool according to claim 1, characterized in that: One end of the main valve (310) is connected to the end of the main water inlet pipe (110), and the other end is connected to a water supply main pipe (111).

3. The dual-level liquid control device for a pool according to claim 2, wherein: One end of the secondary water inlet pipe (210) far from the secondary float valve (200) is connected to the water supply main pipe (111).

4. A double liquid level control device for a water tank according to claim 2, characterized in that: The main valve (310) includes a valve body (311), a valve core (312), and a diaphragm seat (313), the diaphragm seat (313) and the valve body (311) being connected to enclose an inner cavity (301), the inner cavity (301) being provided with two connection ports and respectively connected to the main water inlet pipe (110) and the water supply main pipe (111), the valve core (312) being movably arranged at one of the connection ports to control the connection between the main water inlet pipe (110) and the water supply main pipe (111), and the main float ball pilot valve (320) controlling the opening and closing of the main valve (310) by controlling the movement of the valve core (312).

5. The dual liquid level control device for a water tank according to claim 4, characterized in that: The valve core (312) is arranged at the connection port corresponding to the water supply main pipe (111).

6. The dual-level control device for a water tank according to claim 4, wherein: The valve core (312) has a V-shaped adjustment opening (317) to reduce the pressure disturbance to the water supply main pipe (111).

7. A double liquid level control device for a water tank according to claim 4, characterized in that: The main valve (310) further includes a valve rod (314), the diaphragm seat (313) being provided with a guiding hole (316) matching the valve rod (314), a part of the valve rod (314) being inserted into the guiding hole (316) and being able to slide along the guiding hole (316), and one end of the valve rod (314) being connected to the valve core (312).

8. The double-level control device for a water tank according to claim 7, wherein: A diaphragm cover (318) is provided on the side of the diaphragm seat (313) facing away from the valve core (312). A diaphragm (315) is clamped between the diaphragm cover (318) and the diaphragm seat (313). One end of the valve rod (314) away from the valve core (312) is connected to the diaphragm (315). An induction cavity (302) is formed between the diaphragm (315) and the diaphragm cover (318). The induction cavity (302) is communicated with the water supply main pipe (111) to supply a pressure medium to flow from the water supply main pipe (111) into the induction cavity (302). The induction cavity (302) is communicated with the main float ball pilot valve (320). The opening and closing of the main float ball pilot valve (320) changes the pressure difference between the induction cavity (302) and the water supply main pipe (111) to control the up and down floating of the valve core (312).

9. The double-level control device for a water tank according to claim 8, wherein: An air cavity (303) is formed between the diaphragm seat (313) and the diaphragm (315). The air cavity (303) is communicated with the external air.

10. A double-level water tank control device according to claim 8, wherein: The contact area of the diaphragm (315) with the pressure medium in the induction cavity (302) is larger than the contact area of the valve core (312) with the pressure medium in the water supply main pipe (111).

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