CN201190831Y - Magnetic water level control valve - Google Patents

Abstract

A magnetic water level control valve belongs to tap water valves, in particular to an automatic water level control valve in a water tank. The utility model includes a valve body 1, a valve core 2, a control pipe 8, and a float valve 12. The valve body 1 includes a water inlet 3, a water outlet 4, a valve core chamber 5, and a pressure relief port 7 connected to the control pipe 8; 2 Located in the spool cavity 5 between the water inlet 3 of the valve body 1 and the pressure relief port 7 of the valve body 1, and has a communication inlet (3) and a pressure relief port (7) whose diameter is smaller than that of the pressure relief port 7 Hole 11, one end of the valve core 2 controls the opening and closing of the water inlet 3 of the valve body 1, and the other end forms a pressure relief chamber 10 with the valve core cavity 5 of the valve body 1; one end of the control pipe 8 connects with the pressure relief port 7 of the valve body 1 The other end is the pressure relief water outlet 9 controlled by the float valve 12, which is characterized in that: in the pressure relief chamber 10, in the direction of movement of the valve core 2, a pair of ends fixed on the valve core 2 and The mutually repulsive permanent magnets 6 on the cavity wall of the valve body 1. Since the repulsive force of the permanent magnet 6 is used instead of the elastic force of the spring, the hydraulic water level control valve will not fail due to fatigue and fracture of the metal spring due to water corrosion.

Description

Magnetic water level control valve

technical field

The utility model belongs to tap water valves, in particular to an automatic water level control valve in a water tank.

Background technique

Currently widely used firefighting, air-conditioning and plumbing system replenishment and domestic water tanks generally use hydraulic water level control valves for water supply control. There is pressure in the water inlet pipe, and the water pressure pushes the piston in the valve, the sealing surface opens, and the valve starts to supply water; when the water level rises to the control surface, the float valve 12 closes, and the piston moves back in the airtight container due to the spring reaction force. When the sealing surface is closed, the valve stops water supply, so as to achieve the purpose of automatically controlling the water level. Because of its low power consumption, simple structure, and convenient installation and construction, it is widely used in automatic control of water levels in various water tanks. The spring in the hydraulic water level control valve is generally made of metal wire. Because it is soaked in water all the year round, the metal spring is easily corroded by water, fatigued and broken, which often leads to the failure of the hydraulic water level control valve. The water resources are wasted in vain, and the water Flooding of the pump room, damage to refrigeration and heating equipment due to lack of water in the system, or critical fire water can cause serious consequences. Therefore, it is very important to improve the safety and reliability of the hydraulic water level control valve.

Utility model content

The purpose of this utility model is to provide a valve with a permanent magnet 6 instead of a spring to solve the problem that the spring is corroded by water, easily fatigued, broken, and the hydraulic water level control valve fails.

The solution of the utility model is to adopt a water level control valve similar in structure and appearance to the conventional water level control valve, including a valve body 1, a valve core 2, a control pipe 8, and a float valve 12. The valve body 1 includes a water inlet 3, Water outlet 4, spool cavity 5, pressure relief port 7 connected with control pipe 8; spool 2 is located in the spool cavity 5 between the water inlet 3 of valve body 1 and the pressure relief port 7 of valve body 1, and There is a channel 11 that communicates with the water inlet (3) and the pressure relief port (7), the diameter of which is smaller than that of the pressure relief port 7. One end of the valve core 2 controls the opening and closing of the water inlet 3 of the valve body 1, and the other end is connected to the valve of the valve body 1. The free space of the core chamber 5 constitutes a pressure relief chamber 10; one end of the control pipe 8 is connected to the pressure relief port 7 of the valve body 1, and the other end is a pressure relief water outlet 9 controlled by a float valve 12, which is characterized in that: in the pressure relief chamber 10, in the moving direction of the valve core 2, a pair of mutually repulsive permanent magnets 6 respectively fixed on the end face of the valve core 2 and the chamber wall of the valve body 1 are placed oppositely.

In the water level control valve, the hole 11 of the valve core 2 is concentrically opposed to the pressure relief port 7 on the valve body 1, and a pair of permanent magnets 6 instead of springs can be made into a circular shape, so that it is in line with the hole 11 and the pressure relief port. Port 7 is concentrically placed opposite to each other.

The pair of permanent magnets 6 can be respectively fixed by clips fixed on the end surface of the valve core 2 and the cavity wall of the valve body 1 .

The pair of permanent magnets 6 can also be fixed on the end face of the valve core 2 and the cavity wall of the valve body 1 with water-resistant glue.

The pair of permanent magnets can be made of rare earth NdFeB permanent magnet materials.

The beneficial effects of the utility model are: in the water level control valve, since the repulsive force of the permanent magnet 6 is used instead of the elastic force of the spring, there will be no failure of the hydraulic water level control valve due to fatigue and fracture of the metal spring due to water corrosion.

Description of drawings

Fig. 1 is a structural schematic diagram of a magnetic water level control valve;

Figure 2 is a right side view of the piston spool.

In the figure, 1. Valve body, 2. Valve core, 3. Water inlet, 4. Water outlet, 5. Valve core cavity, 6. Permanent magnet, 7. Pressure relief port, 8. Control pipe, 9. Pressure relief outlet Nozzle, 10, pressure relief chamber, 11 tunnel, 12, ball float valve, 13, vane group structure.

Detailed ways

The structure of the magnetic force water level control valve that the utility model introduces is as shown in Figure 1, wherein valve body 1, spool 2, control pipe 8, ball float valve 12, all adopt the conventional material of making valve. The valve body 1 includes a water inlet 3, a water outlet 4, a spool cavity 5, and a pressure relief port 7 connected to a control pipe 8. The water inlet 3 is opposite to the pressure relief port 7, and the water outlet 4 is on the side. The spool 2 is located in the spool cavity 5 and is a piston-type spool. One end of the spool 2 is located at the water inlet 3 of the valve body 1 to control the opening and closing of the water inlet 3 of the valve body 1; the other end of the spool 2 is located at The pressure relief port 7 of the valve body 1 forms a pressure relief chamber 10 with the free space of the spool cavity 5 of the valve body 1; the center of the piston spool 2 has a channel 11 communicating with the water inlet 3 and the pressure relief port 7, and the channel The aperture of 11 is smaller than the aperture of pressure relief port 7. One end of the control pipe 8 is connected to the pressure relief port 7 of the valve body 1 , and the other end is the pressure relief water outlet 9 , the opening and closing of the pressure relief water outlet 9 is controlled by the float valve 12 . The ball float valve 12 adopts the conventional ball float valve 12, and the pressure relief water outlet 9 is closed when the float floats, and the pressure relief water outlet 9 is opened when the float falls.

In the conventional water valve, a spring is placed between the wall of the valve body 1 in the pressure relief chamber 10 and the end surface of the valve core 2. The opening and closing of the valve core 2 to the water inlet 3 is generally realized by the interaction between the pressure of the water inlet and the force of the spring. of. In the utility model, the spring is replaced by a pair of mutually repelling permanent magnets 6, and the pair of permanent magnets 6 are respectively fixed on the valve body wall and the end face of the valve core 2, and the repulsive force of the permanent magnets 6 interacts with the pressure of the water inlet to realize the water inlet 3 opening and closing. When the water level in the water tank or water tower drops and the float valve 12 opens the pressure relief outlet 9 to drain water, the water inlet chamber replenishes the pressure relief chamber 10 through the hole 11. Since the diameter of the water replenishment hole 11 is smaller than that of the pressure relief pipe, The water replenishment capacity is smaller than the pressure relief capacity, the pressure in the pressure relief chamber 10 decreases, the support force of the valve core 2 is only the repulsion of the permanent magnet 6, and the water pressure in the water inlet pipe overcomes the repulsion of the permanent magnet 6 and the friction between the valve core 2 and the valve body. The spool 2 is opened, and the sealing surface of the spool 2 is gradually opened. At this moment, the valve is opened, and water is supplied from the water outlet 4 to the water tank (or water tower). When the water level of the water tank rises to the control water level, the float valve 12 is closed, and the pressure in the pressure relief chamber increases accordingly, and the repulsive force of the permanent magnet 6 makes the piston valve core 2 move back to close the sealing surface, and the valve stops water supply, realizing automatic Control the water level.

In this embodiment, the hole 11 of the valve core 2 is opposite to the pressure relief port 7 on the valve body 1. Here, a pair of repulsive permanent magnets 6 are used to connect with the hole 11 of the valve core 2 and the pressure relief port 7 on the valve body 1 respectively. Place it concentrically, and fix it with clips welded on the end face of the valve core 2 and the valve body wall, or fix it with water-resistant glue such as AB glue. Since the hole 11 of the valve core 2 is concentrically opposed to the pressure relief port 7 on the valve body 1, a pair of repulsive permanent magnets 6 are also concentrically opposite, so that the repulsive force of the permanent magnet 6 can replace the original spring.

The structure of piston type spool 2 is as shown in Figure 1, 2, is " I " font (as Figure 1 ) from the side, and Figure 2 is seen from water inlet end face. The water inlet end of the valve core 2 is a vane group structure (as shown in Figure 2), and its small circular surface forms a water inlet sealing surface with the water inlet edge platform of the valve body 1, and the large circular surface and the valve core chamber 5 in the valve body 1 The spare part forms the pressure relief chamber 10.

The permanent magnet in the device is made of rare earth NdFeB permanent magnet material, and can also be made of other rust-free permanent magnet materials.

Ball float valve 12 in this device adopts conventional ball float valve.

The device that replaces the inner spring of the hydraulic water level control valve with the permanent magnet 6 that repels each other with the same pole is easy to maintain, improves the stability of the hydraulic water level control valve, avoids the harm caused by the failure of the hydraulic water level control valve due to spring corrosion damage, and ensures its It can run efficiently and stably for a long time, and provide safe water supply.

Claims (5)

1. Magnetic water level control valve, including valve body (1), valve core (2), control pipe (8), float valve (12), valve body (1) includes water inlet (3), water outlet (4), The spool chamber (5), the pressure relief port (7) connected with the control pipe (8); the spool (2) is located at the water inlet (3) of the valve body (1) and the pressure relief port ( 7) in the spool cavity (5), and has a communication inlet (3) and the pressure relief port (7) with a hole diameter smaller than the pressure relief port (7) (11), one end of the spool (2) Control the opening and closing of the water inlet (3) of the valve body (1), and the other end forms a pressure relief chamber (10) with the free space of the spool chamber (5) of the valve body (1); one end of the control pipe (8) connects with the valve The pressure relief port (7) of the body (1) is connected, and the other end is the pressure relief water outlet (9) controlled by the float valve (12). ), a pair of mutually repulsive permanent magnets (6) fixed respectively on the end face of the valve core (2) and the cavity wall of the valve body (1) are placed oppositely. 2. The magnetic water level control valve according to claim 1, characterized in that: the hole (11) of the valve core (2) is concentrically opposed to the pressure relief port (7) on the valve body (1), and the A pair of permanent magnets (6) are annular, and are placed concentrically with the channel (11) and the pressure relief port (7). 3. The magnetic water level control valve according to claim 1 or 2, characterized in that: the pair of permanent magnets (6) are respectively fixed on the end face of the valve core (2) and the cavity wall of the valve body (1). The clip on it is fixed. 4. The magnetic water level control valve according to claim 1 or 2, characterized in that: the pair of permanent magnets (6) are respectively fixed on the end face of the valve core (2) and the end face of the valve body (1) with water-resistant glue. cavity wall. 5. The magnetic water level control valve according to claim 1 or 2, characterized in that the pair of permanent magnets (6) are made of rare earth NdFeB permanent magnet material.

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