Double-opening double-position flow-adjustable liquid level control device

Abstract

The utility model discloses a double-open double-position flow-adjustable liquid level control device which comprises a water tank, a water supply main pipe, a liquid level control valve, an adjusting assembly and a pressure switch valve, the liquid level control valve is installed on the water supply main pipe, and the liquid level control valve is provided with a main water supply opening for supplementing water into the water tank in a large-flow mode. The auxiliary water supply port is used for supplementing water into the water tank in a small-flow mode, and the adjusting assembly is used for adjusting the unit water supply amount of the auxiliary water supply port; the pressure control valve is connected with the liquid level control valve and is used for realizing that the auxiliary water supply port is in a closed state when the liquid level control valve supplements water into the water tank through the main water supply port in a high-flow manner, so that the auxiliary water supply port is prevented from generating thrust to the adjusting assembly, and the resistance of the adjusting assembly for adjusting the unit water supply amount of the auxiliary water supply port is reduced; the equipment power adopted by the adjusting assembly is reduced, and the equipment cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water supply equipment technology, and in particular to a double-opening, double-position adjustable flow level control device. Background Technology

[0002] Patent application number 202411219578.6 discloses an automatic water replenishment device with both high-flow-rate and low-flow-rate water replenishment modes. This device effectively reduces the number of opening and closing cycles of the float valve, avoids frequent opening and closing of the main valve, thereby extending the service life of the main valve and the float valve, and fully utilizing the storage function of the outlet tank. The aforementioned water level control system discloses a water level control valve, which includes a main water supply port, a secondary water supply port, and an adjusting rod. The main water supply port is used for high-flow-rate water replenishment, the secondary water supply port is used for low-flow-rate water replenishment, and the adjusting rod is used to adjust the unit water supply of the secondary water supply port. In this water level control system, the secondary water supply port of the water level control valve is open most of the time, and the secondary water supply port is also open when the main water supply port is open. This results in high adjustment resistance when the adjusting rod adjusts the unit water supply of the secondary water supply port, requiring a high-power motor to drive the adjusting rod, leading to high equipment costs. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a double-opening, double-position adjustable flow level control device, including a level control valve. When the main water supply port of the level control valve is open, the auxiliary water supply port is closed. When the auxiliary water supply port is closed, the adjustment resistance of the regulating rod is greatly reduced, thus eliminating the need for a high-power motor to drive the regulating rod and reducing equipment costs.

[0004] The double-opening, double-position flow-adjustable liquid level control device according to an embodiment of the present invention includes:

[0005] The water tank is equipped with a first float valve assembly and a second float valve assembly, with the first float valve assembly located below the second float valve assembly.

[0006] A water supply main pipe is used to supply water to the water tank;

[0007] A level control valve is installed on the water supply main pipe to control the on / off state of the water supply main pipe. The level control valve includes a large valve body, a main valve cover, and a secondary valve cover, both of which are installed on the large valve body. The large valve body has a medium channel with an inlet and an outlet. The large valve body is provided with a main water supply port and a secondary water supply port, and the inlet and outlet are connected through the main water supply port and / or the secondary water supply port. The main valve cover defines a first chamber, and the secondary valve cover defines a second chamber.

[0008] A pressure switching valve defines a first control chamber and a second control chamber, wherein the first control chamber is connected to the first chamber and the first float pilot valve assembly, and the second control chamber is connected to the second chamber and the second float pilot valve assembly;

[0009] When the first float valve assembly is open, the first control chamber is depressurized, the first chamber is connected to the atmosphere through the first control chamber, the water inlet of the medium channel is connected to the water outlet through the main water supply port, and the water supply main pipe supplies water to the water tank at a large flow rate; when the first float valve assembly is closed, the first control chamber and the first chamber are pressurized, and the main water supply port is closed.

[0010] When the second float valve assembly is open, the second control chamber is depressurized, the second chamber is connected to the atmosphere through the second control chamber, the water inlet of the medium channel is connected to the water outlet through the auxiliary water supply port, and the water supply main pipe supplies water to the water tank at a small flow rate; when the second float valve assembly is closed, the second control chamber and the second chamber are pressurized, and the auxiliary water supply port is closed.

[0011] The pressure switch valve is slidably fitted with a small valve plug. When the first float pilot valve assembly is opened, the small valve plug cuts off the connection between the second control chamber and the second float pilot valve assembly, the second chamber is pressurized, and the auxiliary water supply port is closed.

[0012] The regulating assembly includes an regulating rod, the middle portion of which slides through the secondary valve cover, and the bottom end of which extends into the second chamber; the regulating rod is used to regulate the unit water supply of the secondary water inlet.

[0013] The dual-opening, dual-position flow-adjustable liquid level control device according to the embodiments of the present invention has at least the following beneficial effects:

[0014] By setting a pressure switch valve connected to the liquid level control valve, and by enabling the small valve plug to cut off the connection between the second control chamber and the second float valve assembly when the first float pilot valve assembly is open, the auxiliary water supply port used for supplying water to the water tank at a small flow rate is closed when the liquid level control valve is supplying water to the water tank at a large flow rate. As a result, the auxiliary water supply port will not generate axial thrust on the adjusting rod, which facilitates the use of a low-power motor to drive the adjusting rod and reduces equipment costs.

[0015] According to some embodiments of the present invention, the pressure switching valve includes:

[0016] The small valve body has the small valve plug slidably mounted inside it.

[0017] A small valve seat is connected to the first end of the small valve body along its length. The small valve seat and the small valve plug form the first control cavity. The small valve seat defines the second control cavity. The second control cavity is provided with a third connecting hole and a fourth connecting hole. The third connecting hole communicates with the second chamber, and the fourth connecting hole is connected to the second float pilot valve assembly.

[0018] The small valve plug is provided with a valve plug head, which extends into the second control chamber;

[0019] When the first float pilot valve assembly is opened, the small valve plug moves toward the small valve seat until the valve plug head abuts against the fourth connecting hole, thereby cutting off the connection between the second control chamber and the second float pilot valve assembly.

[0020] According to some embodiments of the present invention, the second end of the small valve body in the length direction defines a third control cavity, and the third control cavity is connected to the water inlet end of the medium channel.

[0021] According to some embodiments of the present invention, the small valve plug includes a first diameter segment and a second diameter segment, the first diameter segment and the small valve seat form the first control cavity, and the second diameter segment and the small valve body form the third control cavity;

[0022] The diameter of the first diameter segment is larger than the diameter of the second diameter segment.

[0023] According to some embodiments of the present invention, a shoulder is formed at the connection between the first diameter segment and the second diameter segment, and an air cavity is formed between the shoulder and the small valve body, and the air cavity is in communication with the atmosphere.

[0024] According to some embodiments of the present invention, an elastic element is installed in the first control cavity, the elastic element is sleeved on the valve plug head, and the two ends of the elastic element abut against the small valve plug and the small valve seat respectively.

[0025] According to some embodiments of the present invention, the small valve plug is provided with an installation groove, the small valve seat is provided with a positioning ring, the first end of the elastic element in the length direction is sleeved on the positioning ring, and the second end of the elastic element in the length direction is installed in the installation groove.

[0026] According to some embodiments of the present invention, the adjusting assembly further includes a motor and a control unit. The motor is used to drive the adjusting rod to rise and fall. The control unit is used to control the motor to start when the second float valve assembly is in the closed state. The control unit is also used to control the motor to stop after a delay after it starts.

[0027] According to some embodiments of the present invention, the control unit is further configured to adjust the direction of the motor to positive when the first float valve is in the closed state, and to adjust the direction of the motor to negative when the first float valve is in the open state.

[0028] According to some embodiments of the present invention, the first float pilot valve assembly includes a first float pilot valve body, a first hydraulic switch and a main control pipe, the first control chamber is connected to the first float pilot valve body through the main control pipe, and the first hydraulic switch is installed on the main control pipe;

[0029] The second float pilot valve assembly includes a second float pilot valve body, a second hydraulic switch, and a secondary control pipe. The second control chamber is connected to the second float pilot valve body through the secondary control pipe, and the second hydraulic switch is installed on the secondary control pipe.

[0030] The first hydraulic switch and the second hydraulic switch are electrically connected to the control unit.

[0031] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0033] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0034] Figure 2 for Figure 1 Schematic diagram of a medium-pressure on / off valve;

[0035] Figure 3 for Figure 1 A schematic diagram of the structure of the liquid level control valve.

[0036] Icon labels:

[0037] Water tank 1000, first float pilot valve 1100, second float pilot valve 1200, main control pipe 1300, first hydraulic switch 1310, auxiliary control pipe 1400, second hydraulic switch 1410;

[0038] Water supply main pipe 2000;

[0039] Liquid level control valve 3000, large valve body 3100, medium channel 3110, water inlet 3111, water outlet 3112, main water supply port 3120, main valve seat 3121, auxiliary water supply port 3130, auxiliary valve seat 3131, main valve cover 3200, main diaphragm 3210, first chamber 3211, first through hole 3212, main control hole 3213, main valve plug 3220, main pressure plate 3230, main spring 3240, auxiliary valve cover 3300, auxiliary diaphragm 3310, second chamber 3311, second through hole 3312, auxiliary control hole 3313, auxiliary valve plug 3320, auxiliary pressure plate 3330, auxiliary spring 3340;

[0040] Pressure switch valve 4000, small valve body 4100, first control chamber 4110, first connecting hole 4111, second connecting hole 4112, third control chamber 4120, small valve seat 4200, second control chamber 4210, third connecting hole 4211, fourth connecting hole 4212, positioning ring 4220, small valve plug 4400, valve plug head 4410, first diameter section 4420, second diameter section 4430, shoulder 4440, air chamber 4441, mounting groove 4450, elastic element 4500;

[0041] Adjustment component 5000, adjustment rod 5100, motor 5200, control unit 5300, transmission component 5400. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, etc., indicating the directional or positional relationship, are based on the directional or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0045] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0046] Reference Figures 1 to 3 The dual-opening, dual-position adjustable flow level control device of this utility model includes: a water tank 1000, a water supply main pipe 2000, and a level control valve 3000. The water supply main pipe 2000 is used to supply water to the water tank 1000. The level control valve 3000 is installed on the water supply main pipe 2000 to control the on / off state of the water supply main pipe 2000. A first float pilot valve assembly 1100 and a second float pilot valve assembly 1200 are installed in the water tank 1000. The first float pilot valve assembly 1100 is located below the second float pilot valve assembly 1200. The first float pilot valve assembly 1100 and the second float pilot valve assembly 1200 can adopt the float pilot valve in patent application number CN202022345462.0, entitled "A Dual Level Control Float Pilot Valve".

[0047] In the embodiments of this utility model, reference is made to Figure 1 , Figure 3As shown, the level control valve 3000 includes a large valve body 3100, a main valve cover 3200, a secondary valve cover 3300, a main diaphragm 3210, and a secondary diaphragm 3310. The main valve cover 3200 and the secondary valve cover 3300 are both mounted on the large valve body 3100. The main diaphragm 3210 is movably mounted between the main valve cover 3200 and the main valve seat 3121, and the secondary diaphragm 3310 is movably mounted between the secondary valve cover 3300 and the secondary valve seat 3131. The main valve cover 3200... The main diaphragm 3210 is connected to the main valve body 3100 by bolts or other fasteners, and the edge of the main diaphragm 3210 is pressed between the main valve cover 3200 and the main valve body 3100; similarly, the auxiliary valve cover 3300 is connected to the main valve body 3100 by bolts or other fasteners, and the edge of the auxiliary diaphragm 3310 is pressed between the auxiliary valve cover 3300 and the main valve body 3100; the middle parts of both the main diaphragm 3210 and the auxiliary diaphragm 3310 can undergo elastic deformation in the vertical direction. The large valve body 3100 has a medium channel 3110, which has an inlet end 3111 and an outlet end 3112. The large valve body 3100 is provided with a main water supply port 3120 and a secondary water supply port 3130. The inlet end 3111 and the outlet end 3112 are connected through the main water supply port 3120 and / or the secondary water supply port 3130. A main valve seat 3121 is provided at the main water supply port 3120, and a secondary valve seat 3131 is provided at the secondary water supply port 3130. The main valve cover 3200 corresponds to the main valve seat 3121, and the secondary valve cover 3300 corresponds to the secondary valve seat 3131. One side of the main diaphragm 3210 can be sealed to the main valve seat 3121 to close the main water supply port 3120; one side of the auxiliary diaphragm 3310 is equipped with an auxiliary valve plug 3320, which can be sealed to the auxiliary valve seat 3131 to close the auxiliary water supply port 3130. The orifice diameter of the main water supply port 3120 is usually larger than that of the auxiliary water supply port 3130. When the medium flows from the inlet end 3111 through the main water supply port 3120 to the outlet end 3112, it supplies water to the water tank 1000 at a large flow rate. When the medium flows from the inlet end 3111 through the auxiliary water supply port 3130 to the outlet end 3112, it supplies water to the water tank 1000 at a small flow rate. During peak water usage periods, a large flow of water can be supplied to the water tank 1000 through the main water supply port 3120 to maintain the water level in the water tank 1000. During normal water usage periods, a small flow of water can be continuously supplied to the water tank 1000 through the auxiliary water supply port 3130 to reduce the operation of the main valve side of the liquid level control valve 3000, thereby reducing the disturbance to the upstream pipeline pressure and extending the service life of the equipment.

[0048] In this embodiment, the level control valve 3000 is equipped with an adjustment assembly 5000, as shown in the reference... Figure 3As shown, the regulating assembly 5000 includes an regulating rod 5100, a motor 5200, and a transmission component 5400. The output end of the motor 5200 is connected to the regulating rod 5100 through the transmission component 5400, and is used to drive the regulating rod 5100 to rise and fall. The transmission component 5400 can be a gear assembly, belt assembly, etc., and is used to reduce the speed of the output end of the motor 5200, so as to achieve more precise adjustment of the rise and fall of the regulating rod 5100. The middle part of the regulating rod 5100 slides through the secondary valve cover 3300, and the bottom end of the regulating rod 5100 extends into the second chamber 3311. The regulating rod 5100 is used to limit the stroke end of the secondary valve plug 3320. Due to the obstruction of the regulating rod 5100, the distance that the secondary valve plug 3320 can move relative to the secondary valve seat 3131 is limited. By adjusting the height of the regulating rod 5100 in the vertical direction, the unit water supply volume for small-flow water supply through the secondary water supply port 3130 can be adjusted.

[0049] In this embodiment, the level control valve 3000 has a first chamber 3211 formed between the main diaphragm 3210 and the main valve cover 3200; the main diaphragm 3210 has a first through hole 3212 for connecting the water inlet 3111 of the medium channel 3110 and the first chamber 3211; the main valve cover 3200 has a main control hole 3213 penetrating through the main valve cover 3200; a second chamber 3311 is formed between the auxiliary diaphragm 3310 and the auxiliary valve cover 3300; the auxiliary diaphragm 3310 has a second through hole 3312 for connecting the water inlet 3111 of the medium channel 3110 and the second chamber 3311; the auxiliary valve cover 3300 has a secondary control hole 3313 penetrating through the auxiliary valve cover 3300.

[0050] The dual-opening, dual-position adjustable flow level control device of this embodiment also includes a pressure switch valve 4000, which defines a first control chamber 4110 and a second control chamber 4210. The first control chamber 4110 connects to a first chamber 3211 and a first float pilot valve 1100 assembly, and the second control chamber 4210 connects to a second chamber 3311 and a second float pilot valve 1200 assembly; specifically, refer to... Figure 1 , Figure 2 As shown, the first control cavity 4110 is connected to the main control hole 3213, and the second control cavity 4210 is connected to the auxiliary control hole 3313.

[0051] The liquid level control method in this embodiment is as follows:

[0052] The water tank 1000 is equipped with a first set low water level, a first set high water level, a second set low water level, and a second set high water level. The first float valve assembly 1100 floats between the first set low water level and the first set high water level. When the water level in the water tank 1000 drops to the first set low water level, the first float valve assembly 1100 opens; when the water level in the water tank 1000 rises to the first set high water level, the first float valve assembly 1100 closes. The second float valve assembly 1200 floats between the second set low water level and the second set high water level. When the water level in the water tank 1000 drops to the second set low water level, the second float valve assembly 1200 opens; when the water level in the water tank 1000 rises to the second set high water level, the second float valve assembly 1200 closes.

[0053] When the water level drops to the second set low water level, the second float valve assembly 1200 opens, the second control chamber 4210 is depressurized and connected to the atmosphere, and the second chamber 3311 is connected to the second control chamber 4210 through the auxiliary control hole 3313, and the second chamber 3311 is depressurized; the medium enters the second chamber 3311 through the inlet end 3111 of the medium channel 3110 and the second through hole 3312 of the auxiliary diaphragm 3310. The medium pressure at the inlet end 3111 will be greater than the medium pressure in the second chamber 3311, thereby pushing the auxiliary valve plug 3320 to move upward, so that the inlet end 3111 and the outlet end 3112 are connected through the auxiliary water supply port 3130, and the water supply main pipe 2000 supplies water to the water tank 1000 at a small flow rate;

[0054] When the water level rises to the second set high water level, the second float valve assembly 1200 closes, the second control chamber 4210 accumulates pressure, and the connection between the auxiliary control port 3313 and the atmosphere is cut off. The second chamber 3311 accumulates pressure. The medium in the inlet 3111 enters the second chamber 3311 through the second through hole 3312 of the auxiliary diaphragm 3310. The pressure in the second chamber 3311 is balanced with the pressure in the inlet 3111. The auxiliary diaphragm 3310 faces the auxiliary valve cover 3300. The pressure-bearing area is the area of ​​the secondary diaphragm 3310. The pressure-bearing area of ​​the secondary diaphragm 3310 on the side away from the secondary valve cover 3300 is the area of ​​the secondary diaphragm 3310 minus the area of ​​the secondary water supply port 3130. The pressure-bearing area of ​​the secondary diaphragm 3310 on the side facing the secondary valve cover 3300 is greater than the pressure-bearing area of ​​the secondary diaphragm 3310 on the side away from the secondary valve cover 3300. The secondary diaphragm 3310 moves downward, so that the secondary valve plug 3320 and the secondary valve seat 3131 are sealed together to close the secondary water supply port 3130.

[0055] When the water level drops to the first set low water level, the first float valve assembly 1100 opens, the first control chamber 4110 is depressurized and connected to the atmosphere, and the first chamber 3211 is connected to the first control chamber 4110 through the main control hole 3213. The first control chamber 4110 is depressurized. The medium at the inlet end 3111 enters the first chamber 3211 through the first through hole 3212 of the main diaphragm 3210. The medium pressure at the inlet end 3111 will be greater than the medium pressure in the first chamber 3211, thereby pushing the main diaphragm 3210 to move downward, so that the inlet end 3111 and the outlet end 3112 are connected through the main water supply port 3120, and the water supply main pipe 2000 supplies water to the water tank 1000 at a large flow rate.

[0056] When the water level rises to the first set high water level, the first float valve assembly 1100 closes, the first control chamber 4110 accumulates pressure, and the connection between the main control port 3213 and the atmosphere is cut off. The first chamber 3211 accumulates pressure; the medium in the inlet 3111 enters the first chamber 3211 through the first through hole 3212 of the main diaphragm 3210, and the pressure in the first chamber 3211 is balanced with the pressure in the inlet 3111; while the main diaphragm 3210 faces the main valve cover 32 The pressure-bearing area on the 00 side is the area of ​​the main diaphragm 3210. The pressure-bearing area on the side of the main diaphragm 3210 away from the main valve cover 3200 is the area of ​​the main diaphragm 3210 minus the area of ​​the main water supply port 3120. The pressure-bearing area on the side of the main diaphragm 3210 facing the main valve cover 3200 is greater than the pressure-bearing area on the side of the main diaphragm 3210 away from the main valve cover 3200. The main diaphragm 3210 moves upward to seal and connect with the main valve seat 3121 to close the main water supply port 3120.

[0057] As can be seen from the above, the second float valve assembly 1200 is closed only when the water level in the water tank 1000 rises to the second set high water level. That is, the auxiliary water supply port 3130 in this embodiment is open most of the time, which results in a large adjustment resistance when the regulating rod 5100 adjusts the unit water supply of the auxiliary water supply port 3130. A high-power motor 5200 is required to drive the regulating rod 5100 to move, resulting in high equipment cost. To solve the above-mentioned technical problems, the pressure switch valve 4000 in this embodiment is slidably equipped with a small valve plug 4400. When the first float pilot valve 1100 assembly is opened, the small valve plug 4400 can cut off the connection between the second control chamber 4210 and the second float pilot valve 1200 assembly, so that the second chamber 3311 is pressurized, realizing the same working condition as when the second float pilot valve assembly 1200 is closed and the auxiliary water supply port 3130 is closed. The adjusting rod 5100 is not in the top contact state that limits the stroke end of the auxiliary valve plug 3320, thereby reducing the adjusting resistance of the adjusting rod 5100, making it easier to use a low-power motor 5200 to drive the adjusting rod 5100 to move, and reducing equipment costs.

[0058] In the embodiments of this utility model, reference is made to Figure 2As shown, the pressure switch valve 4000 includes a small valve body 4100 and a small valve seat 4200. A small valve plug 4400 is slidably installed inside the small valve body 4100. The small valve seat 4200 is connected to the first end of the small valve body 4100 in the length direction. A first control chamber 4110 is formed between the small valve seat 4200 and the small valve plug 4400. The small valve seat 4200 defines a second control chamber 4210. The second end of the small valve body 4100 in the length direction defines a third control chamber 4310. The third control chamber 4310 is connected to the water inlet 3111 of the medium channel 3110. The small valve plug 4400 includes a first diameter segment 4420 and a second diameter segment 4430. A first control cavity 4110 is formed between the first diameter segment 4420 and the small valve seat 4200, and a third control cavity 4310 is formed between the second diameter segment 4430 and the small valve body 4100. The diameter of the first diameter segment 4420 is larger than the diameter of the second diameter segment 4430. A shoulder 4440 is formed at the connection between the first diameter segment 4420 and the second diameter segment 4430. An air cavity 4441 is formed between the shoulder 4440 and the small valve body 4100. The air cavity 4441 is connected to the atmosphere. The large diameter segment of the small valve plug 4400 is provided with a valve plug head 4410, which extends into the second control cavity 4210.

[0059] Furthermore, the first control chamber 4110 is provided with a first connection hole 4111 and a second connection hole 4112. The first connection hole 4111 communicates with the first chamber 3211 through the main control hole 3213, and the second connection hole 4112 is connected to the first float pilot valve 1100 assembly. The second control chamber 4210 is provided with a third connection hole 4211 and a fourth connection hole 4212. The third connection hole 4211 communicates with the second chamber 3311 through the auxiliary control hole 3313, and the fourth connection hole 4212 is connected to the second float pilot valve 1200 assembly.

[0060] When the water level drops to the second set low water level, the second float pilot valve assembly 1200 opens, the second control chamber 4210 is depressurized, the auxiliary valve plug 3320 of the liquid level control valve 3000 moves upward normally, and the water supply main pipe 2000 supplies water to the water tank 1000 at a small flow rate.

[0061] When the water level rises to the second set high water level and the second float pilot valve assembly 1200 closes, the second control chamber 4210 stores pressure, the secondary diaphragm 3310 of the level control valve 3000 moves downward normally, and the secondary valve plug 3320 is sealed to the secondary valve seat 3131 to close the secondary water supply port 3130.

[0062] When the water level drops to the first set low water level, the first float pilot valve assembly 1100 opens, the first control chamber 4110 is depressurized, the main diaphragm 3210 of the level control valve 3000 moves downward normally, and the water supply main pipe 2000 supplies water to the water tank 1000 at a large flow rate; at the same time, the pressure of the third control chamber 4310 is equal to the pressure of the inlet end 3111, so the pressure of the third control chamber 4310 is greater than the pressure of the first control chamber 4110, pushing the small valve plug 4400 to move towards the small valve seat 4200 until the valve plug head 4410 abuts against the fourth connecting hole 4212, so as to cut off the connection between the second control chamber 4210 and the second float pilot valve 1200 assembly, thereby allowing the secondary diaphragm 3310 of the level control valve 3000 to move downward normally, and the secondary valve plug 3320 and the secondary valve seat 3131 are sealed together to close the secondary water supply port 3130, so as to facilitate the low-resistance lifting and lowering action of the adjusting rod 5100;

[0063] When the water level rises to the first set high water level and the first float valve assembly 1100 closes, the first control chamber 4110 stores pressure, and the main diaphragm 3210 of the level control valve 3000 moves upward normally. The main diaphragm 3210 is sealed to the main valve seat 3121 to close the main water supply port 3120. At the same time, the pressure in the first control chamber 4110 and the third control chamber 4310 are equal. Since the diameter of the first diameter section 4420 is larger than the diameter of the second diameter section 4430, the small valve plug 4400 moves away from the small valve seat 4200, causing the valve plug head 4410 to disengage from the fourth connecting hole 4212.

[0064] Furthermore, to ensure that the small valve plug 4400 can move stably in the direction away from the small valve seat 4200, an elastic element 4500 is installed in the first control cavity 4110. The elastic element 4500 is sleeved on the valve plug head 4410, and its two ends abut against the small valve plug 4400 and the small valve seat 4200, respectively. To improve the stability of the elastic element 4500 and prevent it from moving radially, the small valve plug 4400 is provided with a mounting groove 4450, and the small valve seat 4200 is provided with a positioning ring 4220. The first end of the elastic element 4500 in the length direction is sleeved on the positioning ring 4220, and the second end of the elastic element 4500 in the length direction is installed in the mounting groove 4450. The elastic element 4500 is preferably a spring.

[0065] In the embodiments of this utility model, reference is made to Figure 3As shown, the main diaphragm 3210 is equipped with a main pressure plate 3230. The main pressure plate 3230 and the main valve plug 3220 are respectively installed on opposite sides of the main diaphragm 3210 to protect and reinforce the main diaphragm 3210. The main pressure plate 3230 and the main valve plug 3220 are connected by fasteners that penetrate the main diaphragm 3210. Similarly, the secondary diaphragm 3310 is equipped with a secondary pressure plate 3330. The secondary pressure plate 3330 and the secondary valve plug 3320 are respectively installed on opposite sides of the secondary diaphragm 3310 to protect and reinforce the secondary diaphragm 3310. The secondary pressure plate 3330 and the secondary valve plug 3320 are connected by fasteners that penetrate the secondary diaphragm 3310. The fasteners can be bolts or other structures. A main spring 3240 is installed in the first chamber 3211. The main spring 3240 is installed on the main valve cover 3200 and extends toward the main diaphragm 3210. A secondary spring 3340 is installed in the second chamber 3311. The secondary spring 3340 is installed on the secondary valve cover 3300 and extends toward the secondary diaphragm 3310.

[0066] In an embodiment of this utility model, the first float pilot valve 1100 assembly includes a first float pilot valve 1100 assembly body, a first hydraulic switch 1310, and a main control pipe 1300. The first control chamber 4110 is connected to the first float pilot valve 1100 assembly body through the main control pipe 1300, and the first hydraulic switch 1310 is installed on the main control pipe 1300. The second float pilot valve 1200 assembly includes a second float pilot valve 1200 assembly body, a second hydraulic switch 1410, and a secondary control pipe 1400. The second control chamber 4210 is connected to the second float pilot valve 1200 assembly body through the secondary control pipe 1400, and the second hydraulic switch 1410 is installed on the secondary control pipe 1400. The regulating assembly 5000 also includes a control unit 5300, and the first hydraulic switch 1310, the second hydraulic switch 1410, and the control unit 5300 are electrically connected.

[0067] The control unit 5300 is used to start the motor 5200 when the second float valve 1200 assembly is in the closed state. The control unit 5300 is also used to control the motor 5200 to stop after a delay after starting. The control unit 5300 is also used to control the direction of the motor 5200 to be positive when the first float valve 1100 assembly is in the closed state, and to control the direction of the motor 5200 to be negative when the first float valve 1100 assembly is in the open state. Specifically, the control unit 5300 may include a time-delay relay or similar device to control the motor 5200 to stop after a set time. For example, a positive direction of the motor 5200 means clockwise rotation, and a negative direction means counterclockwise rotation; after the control unit 5300 controls the direction of the motor 5200 to be positive or negative, the motor 5200 will only start when the second float valve 1200 assembly is in the closed state. The control unit 5300 circuit in this embodiment can be a relay circuit, or it can be a microcontroller or a PCL control circuit, with the same control principle.

[0068] When the motor 5200 rotates in the forward direction, the motor 5200 is started. The motor 5200 rotates forward for a set duration, which in turn drives the adjusting rod 5100 to descend a set distance, thereby reducing the unit water supply of the auxiliary water supply port 3130. When the motor 5200 rotates in the reverse direction, the motor 5200 is started. The motor 5200 rotates in the reverse direction for a set duration, which in turn drives the adjusting rod 5100 to rise a set distance, thereby increasing the unit water supply of the auxiliary water supply port 3130.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine the different embodiments or examples described in this specification.

[0070] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A dual opening dual position flow adjustable liquid level control device, characterized in that, The utility model relates to a water tank, install first float ball guide valve subassembly and second float ball guide valve subassembly, first float ball guide valve subassembly set up in second float ball guide valve subassembly below, Water supply main pipe for supplying water to the water tank, Liquid level control valve is installed in water supply main pipe for controlling the on-off of water supply main pipe, liquid level control valve includes big valve body, main valve cover and vice valve cover, main valve cover, vice valve cover are installed in big valve body, big valve body has medium channel, medium channel has water inlet end and water outlet end, big valve body is equipped with main water supply mouth and vice water supply mouth, water inlet end and water outlet end pass through main water supply mouth and / or vice water supply mouth and communicate, main valve cover defines first chamber, vice valve cover defines second chamber, Pressure switch valve defines first control chamber and second control chamber, first control chamber communicates first chamber and first float ball guide valve subassembly, second control chamber communicates second chamber and second float ball guide valve subassembly, When first float ball guide valve subassembly opens, first control chamber pressure relief, first chamber communicates with the atmosphere through first control chamber, water inlet end of medium channel communicates with water outlet end through main water supply mouth, water supply main pipe supplies large flow to the water tank, when first float ball guide valve subassembly closes, first control chamber, first chamber pressure storage, main water supply mouth closes, When second float ball guide valve subassembly opens, second control chamber pressure relief, second chamber communicates with the atmosphere through second control chamber, water inlet end of medium channel communicates with water outlet end through vice water supply mouth, water supply main pipe supplies small flow to the water tank, when second float ball guide valve subassembly closes, second control chamber, second chamber pressure storage, vice water supply mouth closes, Small valve plug is slidably installed in pressure switch valve, when first float ball guide valve subassembly opens, small valve plug cuts off the communication of second control chamber and second float ball guide valve subassembly, second chamber pressure storage, vice water supply mouth closes, Adjusting assembly includes adjusting rod, the middle part of adjusting rod is slidably arranged in vice valve cover, the bottom end of adjusting rod extends into second chamber, adjusting rod is used for adjusting the unit water supply of vice water supply mouth. The pressure switch valve comprises:

2. The dual-open dual-position flow adjustable liquid level control device according to claim 1, characterized in that: Small valve body, the small valve plug is slidably installed in the small valve body; Small valve seat is connected to the first end of the length direction of the small valve body, the first control chamber is formed between the small valve seat and the small valve plug, and the second control chamber is defined by the small valve seat; The second control chamber is provided with a third connecting hole and a fourth connecting hole, the third connecting hole is communicated with the second chamber, and the fourth connecting hole is connected with the second float ball guide valve subassembly; The small valve plug is provided with a valve plug head, and the valve plug head extends into the second control chamber; When the first float ball guide valve subassembly is opened, the small valve plug moves to the position where the valve plug head abuts against the fourth connecting hole in the direction close to the small valve seat, so as to cut off the communication between the second control chamber and the second float ball guide valve subassembly. ​ 3. The dual-open dual-position flow adjustable liquid level control device according to claim 2, characterized in that: The second end of the small valve body in the length direction defines a third control cavity, which is in communication with the water inlet end of the medium channel.

4. The dual-open dual-position flow adjustable liquid level control device according to claim 3, characterized in that: The small valve plug comprises a first diameter section and a second diameter section, the first diameter section and the small valve seat form the first control cavity, and the second diameter section and the small valve body form the third control cavity. The diameter of the first diameter section is greater than the diameter of the second diameter section.

5. The dual-open dual-position flow adjustable liquid level control device according to claim 4, characterized in that: The connection between the first diameter section and the second diameter section forms a shaft shoulder, which forms an air cavity with the small valve body, and the air cavity is in communication with the atmosphere.

6. The dual-open dual-position flow adjustable liquid level control device according to claim 2, characterized in that: An elastic member is installed in the first control cavity, the elastic member is sleeved on the valve plug head, and the two ends of the elastic member are respectively in abutment with the small valve plug and the small valve seat.

7. The dual-open dual-position flow adjustable liquid level control device according to claim 6, characterized in that: The small valve plug is provided with a mounting groove, the small valve seat is provided with a positioning ring, the first end of the elastic member in the length direction is sleeved on the positioning ring, and the second end of the elastic member in the length direction is installed in the mounting groove.

8. The dual-open dual-position flow adjustable liquid level control device according to claim 1, wherein: The adjusting assembly further comprises a motor and a control unit, the motor is used to drive the adjusting rod to lift and lower, the control unit is used to control the motor to start when the second floating ball guide valve assembly is in a closed state, and the control unit is further used to control the motor to stop after the motor starts.

9. The dual-open dual-position flow adjustable liquid level control device according to claim 8, characterized in that: The control unit is further used to control the direction of the motor to be positive when the first floating ball guide valve is in a closed state, and the direction of the motor to be negative when the first floating ball guide valve is in an open state.

10. The dual-open dual-position flow adjustable liquid level control device according to claim 8, wherein: The first floating ball guide valve assembly comprises a first floating ball guide valve body, a first hydraulic switch and a main control pipe, the first control cavity is connected with the first floating ball guide valve body through the main control pipe, and the first hydraulic switch is installed on the main control pipe. The second floating ball guide valve assembly comprises a second floating ball guide valve body, a second hydraulic switch and a secondary control pipe, the second control cavity is connected with the second floating ball guide valve body through the secondary control pipe, and the second hydraulic switch is installed on the secondary control pipe. The first hydraulic switch, the second hydraulic switch and the control unit are electrically connected.

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