CN110056702B - Mechanical magnetic induction up-down liquid level control valve - Google Patents
Mechanical magnetic induction up-down liquid level control valve Download PDFInfo
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- CN110056702B CN110056702B CN201910433269.1A CN201910433269A CN110056702B CN 110056702 B CN110056702 B CN 110056702B CN 201910433269 A CN201910433269 A CN 201910433269A CN 110056702 B CN110056702 B CN 110056702B
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- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 230000006698 induction Effects 0.000 title claims abstract description 20
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- 238000002955 isolation Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 76
- 230000007547 defect Effects 0.000 abstract description 2
- 230000008021 deposition Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1266—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being acted upon by the circulating fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a mechanical magnetic induction up-down liquid level control valve, which comprises a valve body and a hydraulic pushing device, wherein an inlet end, an outlet end and an inner cavity are arranged in the valve body, the inlet end and the outlet end are communicated through the inner cavity, a piston body is arranged in the inner cavity, and the piston body can move along the inner wall of the inner cavity to realize the switching of the conduction or the closure of the inlet end and the outlet end, so that the opening and the closing of the valve body are controlled; the hydraulic pushing device is used for sensing external hydraulic pressure and finally transmitting hydraulic pushing force to the piston body so as to enable the piston body to move. The invention eliminates the floating ball and connecting rod structure adopted by the original liquid level control valve, and overcomes the defect of failure of the main liquid level control valve and overflow of the water tank caused by easy detachment of the floating ball or easy damage of the connecting rod; the magnetic force between the adjusting ring and the permanent magnet can be adjusted according to actual needs, so that the problem of water deposition caused by small travel range of the floating ball running up and down is solved, the utilization rate of water in a water tank or a water tank is improved, and the water age of the water in the water tank or the water tank is shortened.
Description
Technical Field
The invention relates to the technical field of hydraulic systems, in particular to a mechanical magnetic induction upper and lower liquid level control valve.
Background
At present, a hydraulic driven self-operated liquid level control valve is conventionally arranged at a water supplementing pipe orifice of a water tank or the water tank, and because the opening and closing of the valve are controlled by a floating ball pilot valve arranged in the water tank or the water tank, the floating ball pilot valve is also called a remote control floating ball valve, and the floating ball pilot valve is automatically opened or closed according to the water level of the water tank so as to control the opening or closing of a main valve. At present, the adopted floating ball guide valve is generally in a form of a small stop valve matched with a connecting rod and a floating ball, and is limited by the length of the connecting rod and the opening and closing and sealing principles of the small stop valve, the travel range of the floating ball capable of running up and down is very small, so that the liquid level change in a water tank or a water tank is very small, more than 80% of water in the water tank cannot participate in circulation, the water age is prolonged, the pollution risk is increased, and the functions of peak staggering adjustment and water preparation and water supply of the water tank are not fully exerted; on the other hand, the floating ball floats on the liquid surface through the connecting rod, and is influenced by frequent opening and closing and water inlet disturbance, so that the conditions of floating ball detachment, connecting rod breakage and the like are easily caused, and the main liquid level control valve is invalid and the water tank overflows.
Disclosure of Invention
The present invention aims to solve the above technical problems at least to some extent. Therefore, the invention provides the mechanical magnetic induction upper and lower liquid level control valve, which not only can solve the problem of small travel range of the floating ball, but also can avoid the condition of failure of the main control valve and overflow of a pool or a water tank caused by easy damage of the floating ball pilot valve.
The technical scheme adopted for solving the technical problems is as follows: a mechanical magnetic induction up-down liquid level control valve comprises a valve body and a hydraulic pushing device; the valve body is provided with an inlet end, an outlet end and an inner cavity, the inlet end and the outlet end are communicated through the inner cavity, a piston body is arranged in the inner cavity, one side of the piston body, facing the outlet end, is used for blocking the outlet end, a pilot cavity is formed on the other side of the piston body, and the piston body can move along the inner wall of the inner cavity to realize switching of opening or closing of the outlet end; the middle part of the piston body is provided with a pilot channel, the pilot channel communicates the outlet end with the pilot cavity, a pilot valve core is movably arranged in the pilot cavity, and the end face of the pilot valve core is opposite to the end face of the pilot channel and can be used for blocking the pilot channel; the hydraulic pushing device is used for sensing external hydraulic pressure and transmitting the hydraulic pressure to the pilot valve core, and the pilot valve core can push the piston body to the outlet end under the action of the hydraulic pressure and seal the outlet end.
Further, the circumferential wall of the piston body is provided with a one-way sealing ring allowing liquid to flow only from the inlet end or the outlet end into the pilot chamber.
Further, a piston sealing ring is arranged on one side of the piston body facing the outlet end.
Further, a T-shaped pilot valve seat penetrating through the piston body is arranged in the middle of the piston body, and the pilot channel is arranged in the middle of the pilot valve seat.
Further, a valve core sealing ring is arranged on the surface of the pilot valve core, which is opposite to the pilot channel.
Further, the hydraulic pushing device comprises an isolation valve cover, a magnetic force induction mechanism and a hydraulic pressure induction mechanism; the pilot cavity is surrounded by the inner wall of the inner cavity, the isolation valve cover and the piston body, one side of the isolation valve cover, which surrounds the pilot cavity, is concaved inwards to form a guide groove matched with the pilot valve core, and the pilot valve core can slide along the inner groove wall of the guide groove; the hydraulic induction mechanism is used for inducing external hydraulic thrust and transmitting the hydraulic thrust to the magnetic induction mechanism, and the magnetic induction mechanism is stressed to move and drives the pilot valve core to slide by magnetic force.
Further, the magnetic force induction mechanism comprises a magnet sleeve, a permanent magnet and an adjusting ring, wherein the magnet sleeve wraps the outer wall of the guide groove and can move along the outer wall of the guide groove, the permanent magnet is fixedly installed in the magnet sleeve, the permanent magnet can attract the pilot valve core to slide in the guide groove by magnetic force, and the adjusting ring which is mutually attracted with the permanent magnet is arranged on the outer wall of the isolating valve cover.
Further, the hydraulic sensing mechanism comprises a diaphragm shaft and a diaphragm; one end of the diaphragm shaft is in contact with the magnet sleeve, the other end of the diaphragm shaft is connected with the diaphragm, the edge of the diaphragm is fixedly connected with the isolating valve cover, the diaphragm faces the inner side surface of the magnet sleeve and forms a closed cavity with the isolating valve cover, and the outer side surface of the diaphragm can be used for sensing external hydraulic pressure.
Further, the isolation valve cover is provided with a membrane cover, and a membrane cover filter screen is arranged on the membrane cover, and can allow external liquid to flow into the membrane cover and press the outer side surface of the membrane.
Further, a spiral groove matched with the adjusting ring is formed in the outer wall of the isolating valve cover, and the adjusting ring can move along the spiral groove in an adjusting mode to adjust the distance between the adjusting ring and the permanent magnet.
The beneficial effects of the invention are as follows: the invention uses the diaphragm to sense the hydraulic pressure in the water tank or the water tank, and finally transmits the hydraulic thrust received by the diaphragm to the piston body in the inner cavity, the magnitude of the hydraulic thrust received by the piston body, namely the height of the liquid level in the water tank or the water tank, determines whether the liquid level control valve is closed or opened, and abandons the floating ball and connecting rod structure adopted by the original liquid level control valve, thereby overcoming the defects that the floating ball is easy to separate from or the connecting rod is easy to damage, so that the liquid level control main valve is invalid, and the water tank overflows; meanwhile, the problem of long-term deposition of water in the water tank or the water tank caused by small travel range of the floating ball running up and down is solved, the utilization rate of the water in the water tank or the water tank can be improved, the water age of the water in the water tank or the water tank is reduced, the water quality is protected, the sanitation is realized, the damage is not easy to occur, and the service life is long.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic illustration of the control valve of the present invention in a closed state;
FIG. 2 is a schematic illustration of the open state of the control valve of the present invention;
FIG. 3 is an enlarged view at A;
fig. 4 is a schematic view of the inlet and outlet end structures of the valve body.
Detailed Description
The invention will now be described in detail with reference to the drawings and examples.
Referring to fig. 1 to 4, a mechanical magnetic induction up-down liquid level control valve of the present invention is characterized by comprising a valve body 100 and a hydraulic pushing device 140; the valve body 100 is provided with an inlet end 101, an outlet end 102 and an inner cavity 103, and specifically, in this embodiment, the valve body 100 includes the inlet end 101, the outlet end 102 and the inner cavity 103, as shown in fig. 1 and 4, the inlet end 101 and the outlet end 102 are disposed at the left side of the inner cavity 103, and a sealing valve seat 112 is disposed between the inlet end and the outlet end, and the sealing valve seat 112 is matched with the left side end (piston seal 109) of a piston body 104 to be described later, so as to form a sealing pair.
The inlet end 101 and the outlet end 102 are in communication via an inner chamber 103. Specifically, as shown in fig. 2, when the control valve is in an open state, it can be seen that the inlet port 101 and the outlet port 102 are in a communicating state through the inner chamber 103.
A piston body 104 is installed in the inner cavity 103, one side of the piston body 104 facing the outlet end 102 is used for blocking the outlet end 102, a pilot cavity 105 is formed on the other side of the piston body, and the piston body 104 can move along the inner wall of the inner cavity 103 so as to realize switching of connection or disconnection between the outlet end 102 and the inlet end 101. Specifically, in the present embodiment, as shown in fig. 1 to 2, the piston body 104 is installed in the inner cavity 103, the surface of the piston body 104 facing the outlet end 102 may be used to block the outlet end 102, so that the outlet end 102 is in a closed state, and the back surface cooperates with the inner cavity 103 to form the pilot cavity 105; in addition, the piston body 104 is not fixed and can move left and right along the inner wall of the inner cavity 103, so that when the piston body 104 moves to the leftmost side as shown in fig. 1, the outlet end 102 is closed, thereby cutting off the connection between the inlet end 101 and the outlet end 102, and water cannot flow from the inlet end 101 to the outlet end 102; as shown in fig. 2, when the piston body 104 moves to the right, the closed state of the outlet port 102 is switched to the open state, the outlet port 102 and the inlet port 101 are brought into communication, and water can flow from the inlet port 101 to the outlet port 102.
A unidirectional sealing ring 106 which only allows liquid to flow into the pilot cavity 105 from the inlet end 101 is arranged on the peripheral wall of the piston body 104, a pilot channel 107 is arranged in the middle of the piston body 104, the pilot channel 107 communicates the outlet end 102 with the pilot cavity 105, a pilot valve core 108 is movably arranged in the pilot cavity 105, and the end face of the pilot valve core 108 is opposite to the end face of the pilot channel 107 and can be used for blocking the pilot channel 107; specifically, in this embodiment, as shown in fig. 1, a unidirectional sealing ring 106 is disposed on the edge of the piston body 104, where the unidirectional sealing ring 106 only allows the liquid to flow from the inlet end 101 into the pilot cavity 105, but not flow reversely, and a pilot channel 107 is disposed in the middle of the piston body 104, where the pilot channel 107 communicates the pilot cavity 105 with the outlet end 102, that is, the liquid in the pilot cavity 105 can flow to the outlet end 102 through the pilot channel 107 and be discharged; as shown in fig. 1, a pilot valve core 108 is further installed in the pilot cavity 105, the left end face of the pilot valve core 108 is just opposite to the right end face of the pilot channel 107, and can move and then block the pilot channel 107, so as to prevent the liquid in the pilot cavity 105 from being discharged, otherwise, as shown in fig. 2, if the pilot valve core 108 does not block the pilot channel 107, the liquid in the pilot cavity 105 can be discharged through the pilot channel 107 and flows to the outlet end 102.
The hydraulic pushing device 140 is configured to sense an external hydraulic pressure and transmit the hydraulic pressure to the pilot spool 108, and the pilot spool 108 can push the piston body 104 against the outlet end 102 and close the outlet end 102 under the action of the hydraulic pressure.
Specifically, as shown in fig. 3, the hydraulic pushing device 140 in this embodiment includes three parts, namely, an isolating valve cover 141, a magnetic force sensing mechanism 142, and a hydraulic force sensing mechanism 143.
The hydraulic pushing device 140 comprises an isolation valve cover 141, a magnetic force sensing mechanism 142 and a hydraulic pressure sensing mechanism 143; the isolating valve cover 141 is covered on the pilot cavity 105, a guide groove 146 with the diameter matched with that of the pilot valve core 108 is concavely formed on one side of the isolating valve cover 141 facing the pilot cavity 105, and the pilot valve core 108 can slide along the inner groove wall of the guide groove 146; the hydraulic pressure sensing mechanism 143 is configured to sense an external hydraulic pressure and transmit the hydraulic pressure to the magnetic force sensing mechanism 142, where the magnetic force sensing mechanism 142 is forced to move while attracting the pilot spool 108 to slide by a magnetic force.
Specifically, as shown in fig. 1 to 2, the isolation valve cover 141 is sleeved on the valve body 100 toward one side of the pilot chamber 105, in this embodiment, the isolation valve cover 141 and the valve body 100 are fixedly connected, and preferably welded, and a sealing process is required at a welded portion between the isolation valve cover 141 and the valve body 100 to prevent water leakage of the pilot chamber 105 or external water flowing into the pilot chamber 105. As described above, as shown in fig. 2, the housing of the valve body 100 and the isolation valve cover 141 together enclose the pilot cavity 105, the pilot cavity 105 is further provided with the guide groove 146 that is formed by the isolation valve cover 141 concave inward as shown in fig. 2, in this embodiment, the pilot valve core 108 in the pilot cavity 105 is installed in the guide groove 146, the guide groove 146 is in clearance fit with the pilot valve core 108, and the pilot valve core 108 can slide along the inner wall of the guide groove 146, and in this embodiment, the preferred structure of the guide groove 146 is as follows: when the pilot spool 108 is moved to the right, water in the pilot spool 146 can be pushed out of the circular arc channel, and thus the left and right movement of the pilot spool 108 is not affected. Further, as shown in fig. 2, in the present embodiment, a diaphragm cover 151 is provided on the diaphragm 149, and a diaphragm cover screen 152 is mounted on the diaphragm cover 151, and external liquid can flow into the diaphragm cover 151 through the diaphragm cover screen 152. The hydraulic pressure sensing mechanism 143 shown in fig. 2 and 3 is for sensing an external hydraulic pressure and transmitting the hydraulic pressure to the magnetic force sensing mechanism 142, and the magnetic force sensing mechanism 142 is moved by the hydraulic pressure while attracting the pilot spool 108 to slide by a magnetic force. As for the specific embodiments of the magnetic force sensing mechanism 142 and the hydraulic pressure sensing mechanism 143, further explanation will be made.
The magnetic force induction mechanism 142 comprises a magnet sleeve 144, a permanent magnet 145 and an adjusting ring 147, the magnet sleeve 144 wraps the outer wall of the guide groove 146 and can move along the outer wall of the guide groove 146, the permanent magnet 145 fixedly installed in the magnet sleeve 144 can attract the pilot valve core 108 to slide in the guide groove 146 by magnetic force, and the outer wall of the isolating valve cover 141 is provided with the adjusting ring 147 which is attracted with the permanent magnet 145 mutually.
Specifically, as shown in fig. 2 and 3, in the present embodiment, the magnet sleeve 144 is mounted on the outer wall of the guide groove 146 and wraps the outer wall of the guide groove 146, and the magnet sleeve 144 can move left and right along the outer wall of the guide groove 146, and the permanent magnet 145 is disposed in the magnet sleeve 144, and the permanent magnet 145 attracts the pilot spool 108 to move left and right in the guide groove 146 along with the left and right movement of the magnet sleeve 144. In addition, an adjustment ring 147 provided on the outer wall of the isolation valve cover 141 is preferably fastened with a screw to facilitate the movement of the adjustment ring 147 in a spiral groove, which will be described later, to adjust the distance between the adjustment ring 147 and the permanent magnet 145 (the distance is changed, and the magnitude of the magnetic attraction force is changed). The adjusting ring 147 and the permanent magnet 145 may attract each other, and the attraction force between the adjusting ring 147 and the permanent magnet 145 may move or immobilize the magnet sleeve 144 left and right.
The hydraulic sensing mechanism 143 includes a diaphragm shaft 148 and a diaphragm 149; one end of the diaphragm shaft 148 is in contact with the magnet sleeve 144, the other end is connected with the diaphragm 149, the edge of the diaphragm 149 is fixedly connected with the isolating valve cover 141, a closed cavity 150 is formed by the inner side surface of the diaphragm 149 facing the magnet sleeve 144 and the isolating valve cover 141, and the outer side surface of the diaphragm 149 can be used for sensing external hydraulic pressure.
Specifically, as shown in fig. 2 and 3, one end of the diaphragm shaft 148 contacts the rear of the magnet sleeve 144, where contact means that the diaphragm shaft 148 and the magnet sleeve 144 may or may not be connected together, in this embodiment, a fixed connection is preferred, and the other end is connected to the diaphragm 149, and the connection of the diaphragm shaft 148 to the diaphragm 149 is preferably a bolted connection, because it is convenient to replace the diaphragm 149 when the diaphragm 149 is damaged. Similarly, the edge of the diaphragm 149 is preferably fixedly connected to the isolation valve cover 141 by bolts, and the diaphragm 149 in this embodiment is preferably a circular diaphragm 149. The edge of the diaphragm 149 is uniformly fixed by a plurality of bolts, the fixing point of the diaphragm shaft 148 to the diaphragm 149 is selected to be at the center point of the diaphragm 149. The diaphragm 149 is shown in fig. 2, the surface of the diaphragm 149 facing the magnet sleeve 144 (which will be referred to herein as the inner surface) and the isolation valve cover 141 cooperate to form a cavity 150, and the other surface (which will be referred to herein as the outer surface) is just opposite to the diaphragm cover screen 152 mounted on the diaphragm cover 151. External liquid flows into the diaphragm cover 151 through the diaphragm cover screen 152 to press the diaphragm 149, and then the diaphragm 149 can push the magnet sleeve 144 to move leftward according to the hydraulic force applied.
Specifically, when the outer side surface of the diaphragm 149 senses hydraulic pressure, the first is that the diaphragm 149 is recessed into the cavity 150 when the diaphragm 149 receives an external hydraulic force greater than a magnetic force (suction force between the permanent magnet 145 and the adjustment ring 147); second, when the diaphragm 149 is subjected to an external hydraulic force less than or equal to a magnetic force, the diaphragm 149 bulges outward.
The principle of implementation of the invention is then:
As shown in fig. 1 and 2, when the amount of water in the pool or tank is sufficient, the external liquid flows into the diaphragm cover 151 through the diaphragm cover filter 152, a hydraulic force is applied to the diaphragm 149, and the diaphragm 149 senses the magnitude of the hydraulic force, that is, the level of the liquid (according to the calculation formula of the pressure of the water in the container: the water pressure=the density x gravity acceleration x of the water is high, the density value of the water and the gravity acceleration value are fixed, then the higher the liquid is, the higher the water pressure is, the pressure is transmitted to the diaphragm shaft 148, the diaphragm shaft 148 is forced to push the magnet sleeve 144 to move leftwards, at this time, the magnet sleeve 144 is pulled back rightwards by the adjusting ring 147 due to the magnetic attraction effect between the permanent magnet 145 in the magnet sleeve 144 and the adjusting ring 147, so that whether the magnet sleeve 144 can move leftwards or not is determined by comparing the hydraulic thrust transmitted by the diaphragm 149 with the suction force of the adjusting ring 147 on the magnet sleeve 144, as shown in fig. 1, when the external liquid level is higher, the diaphragm 149 receives larger hydraulic thrust, when the thrust force exerted by the magnet sleeve 144 is greater than the suction force between the adjusting ring 147 and the permanent magnet 145, the magnet sleeve 144 is pushed to the leftmost end by the diaphragm shaft 148, the permanent magnet 145 at the front end of the magnet sleeve 144 drives the pilot valve core 108 to the leftmost end through magnetic force and blocks the pilot channel 107, at this time, water in the inlet end 101 can flow into the pilot cavity 105 through the unidirectional sealing ring 106, so that the liquid in the pilot cavity 105 is increased, the pressure is enhanced, the piston body 104 is pushed to the leftmost end under the pushing force of the pilot valve core 108 and the pressure of the liquid in the pilot cavity 105 together, and the sealing valve seat 112 is propped against to form a sealing pair, thereby closing the connecting channel between the inlet end 101 and the outlet end 102 in the valve body 100, and the control valve is in a closed state, the water at the inlet end 101 cannot flow into the basin or tank.
When the liquid level of the water tank or the water tank drops, as shown in fig. 2, the hydraulic pressure received by the diaphragm 149 is small or none, the thrust transmitted by the diaphragm shaft 148 to the magnet sleeve 144 is smaller than the suction force between the permanent magnet 145 and the adjusting ring 147, the magnet sleeve 144 is pulled back, meanwhile, under the action of magnetic force, the permanent magnet 145 drives the pilot valve core 108 to move rightwards to open the pilot channel 107, when the pilot channel 107 is opened, the liquid in the pilot cavity 105 flows out from the pilot channel 107 and is discharged through the outlet end 102, the purpose of releasing the pressure in the pilot cavity 105 is achieved, at this time, the piston body 104 moves rightwards under the action of the liquid thrust of the inlet end 101 and the pressure difference between the pilot cavity 105 and the outside, the inlet end 101 and the outlet end 102 of the valve body 100 are conducted again, the control valve is in an opened state, and water in the inlet end 101 begins to supplement water to the water tank or the water tank. This is the entire process of controlling the level of the liquid in the basin or tank by the control valve.
When in use, the control valve can be immersed into a water tank or a water tank to sense water pressure at a certain depth, or the control valve can be installed by arranging a hole matched with the outer diameter of the right end of the isolation valve cover 141 on the wall of the water tank, only the end of the diaphragm 149 is contacted with liquid, the control valve main body is positioned outside the water tank, and the magnetic force is increased to enlarge the magnetic force attenuation as the magnetic force is closer to the magnet according to the distribution characteristics of the magnetic field, so that the permanent magnet 145 at the front end of the magnet sleeve 144 can be infinitely close to the end of the adjusting ring 147 under the action of the magnetic force when the control valve is in a free state, thereby driving the pilot valve core 108 to move to the right end of the guide groove 146, leading the control valve to be in an opened state, the liquid enters the water tank or the water tank through the control valve, and when the water level is continuously increased to reach the set height water level, when the hydraulic thrust force exerted by the diaphragm 149 exceeds the maximum magnetic force between the permanent magnet 145 and the adjusting ring 147, the diaphragm 149 pushes the magnet sleeve 144 away from the adjusting ring 147 through the diaphragm shaft 148 and moves left, and drives the pilot valve core 108 to move left to close the pilot channel 107, liquid flows into the pilot cavity 105 through the unidirectional sealing ring 106, the hydraulic pressure in the pilot cavity 105 increases, the piston body 104 is pushed to the leftmost end, the outlet end 102 is blocked, the control valve is closed, until the water level in the water tank drops to a set position, and when the hydraulic pressure exerted by the diaphragm 149 is smaller than the set suction force between the permanent magnet 145 and the adjusting ring 147, the permanent magnet 145 can return to a position which is infinitely close to the adjusting ring 147 again, and the control valve is opened to supply water into the water tank or the water tank.
In this embodiment, the isolation valve cover 141 shown in fig. 3 is made of a non-magnetic material such as stainless steel, plastic or brass so as not to affect the magnetic induction effect. Further, a spiral groove matching the adjustment ring 147 is provided on the outer wall of the isolation valve cover 141, and the adjustment ring 147 is screw-fitted into the spiral groove. After the screw is unscrewed, the adjusting ring 147 can move along the spiral groove, the adjusting ring 147 moves to different positions and keeps different distances from the permanent magnet 145, the magnetic force between the adjusting ring 147 and the permanent magnet 145 is different, then the diaphragm 149 pushes the magnet sleeve 144 to move leftwards, the magnetic force to overcome is different, namely the hydraulic strength, namely the liquid height, which the diaphragm 149 should bear is different, so that the liquid level of the control pool or tank can be controlled to the required height by moving the adjusting ring 147 to different positions in the spiral groove.
In order to enhance the sealing effect between the piston body 104 and the outlet end 102, in this embodiment, as shown in fig. 1, a piston seal 109 is provided on the side of the piston body 104 facing the outlet end 102, and the diameter of the piston seal 109 is larger than that of the outlet end 102 to prevent water leakage from the inlet end 101 to the outlet end 102. Similarly, a valve element sealing ring 111 is provided on a surface of the pilot valve core 108 opposite to the pilot passage 107, a T-shaped pilot valve seat 110 penetrating the piston body 104 is provided at a middle position of the piston body 104, a top of the T-shaped pilot valve seat 110 faces the outlet end 102, a bottom of the T-shaped pilot valve seat 110 faces the pilot chamber 105, the pilot passage 107 is provided at a middle position of the pilot valve seat 110, that is, as shown in fig. 1, the pilot valve seat 110 is provided at a middle position of the piston body 104, and the pilot passage 107 is provided at a middle position of the pilot valve seat 110. In this embodiment, the connection mode between the pilot valve seat 110 and the piston body 104 is preferably a screw connection made of plastic material, and the screw penetrates the pilot valve seat 110 and the piston seal 109 and fixedly connects them with the piston body 104 together, and the bottom of the pilot valve seat 110 is configured as a truncated cone so as to be in butt joint with the pilot valve core 108, so as to block the pilot channel 107.
In order to increase the service life of the diaphragm 149, in this embodiment, as shown in fig. 1 and 2, a diaphragm pressing plate 153 is disposed between the diaphragm shaft 148 and the diaphragm 149, so that friction between the diaphragm 149 and the diaphragm shaft 148 and friction between the diaphragm 149 and the bolts can be effectively reduced, abrasion can be reduced, and the service life can be prolonged.
Finally, in the present embodiment, the left-right movement of the piston body 104, the left-right sliding of the pilot spool 108, the left-right movement of the magnet sleeve 144, the left-right movement of the diaphragm shaft 148, and the projection or depression of the diaphragm 149 are all realized on the same axis.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and any modifications or equivalent substitutions without departing from the spirit and scope of the present invention should be covered in the scope of the technical solution of the present invention.
Claims (6)
1. A mechanical magnetic induction up-down liquid level control valve is characterized in that: comprises a valve body (100) and a hydraulic pushing device (140); the valve body (100) is provided with an inlet end (101), an outlet end (102) and an inner cavity (103), the inlet end (101) and the outlet end (102) are communicated through the inner cavity (103), a piston body (104) is arranged in the inner cavity (103), one side, facing the outlet end (102), of the piston body (104) is used for blocking the outlet end (102), the other side is provided with a pilot cavity (105), and the piston body (104) can move along the inner wall of the inner cavity (103) to realize switching of opening or closing of the outlet end (102);
A pilot channel (107) is arranged in the middle of the piston body (104), the pilot channel (107) communicates the outlet end (102) with the pilot cavity (105), a pilot valve core (108) is movably arranged in the pilot cavity (105), and the end face of the pilot valve core (108) is opposite to the end face of the pilot channel (107) and can be used for blocking the pilot channel (107);
The hydraulic pushing device (140) is used for sensing external hydraulic pressure and transmitting the hydraulic pressure to the pilot valve core (108), and the pilot valve core (108) can push the piston body (104) to the outlet end (102) under the action of the hydraulic pressure and seal the outlet end (102); the hydraulic pushing device (140) comprises an isolation valve cover (141), a magnetic force sensing mechanism (142) and a hydraulic pressure sensing mechanism (143); the pilot cavity (105) is formed by enclosing the inner wall of the inner cavity (103) and the isolation valve cover (141) and the piston body (104); the isolation valve cover (141) is surrounded to form a guide groove (146) which is concave on one side of the pilot cavity (105) and matched with the pilot valve core (108), and the pilot valve core (108) can slide along the inner groove wall of the guide groove (146); the hydraulic induction mechanism (143) is used for inducing external hydraulic thrust and transmitting the hydraulic thrust to the magnetic induction mechanism (142), and the magnetic induction mechanism (142) is stressed to move and simultaneously drives the pilot valve core (108) to slide by magnetic force; the magnetic force induction mechanism (142) comprises a magnet sleeve (144), a permanent magnet (145) and an adjusting ring (147), wherein the magnet sleeve (144) wraps the outer wall of the guide groove (146) and can move along the outer wall of the guide groove (146), the permanent magnet (145) is fixedly arranged in the magnet sleeve (144), the permanent magnet (145) can attract the pilot valve core (108) to slide in the guide groove (146) by magnetic force, and the adjusting ring (147) which is attracted with the permanent magnet (145) mutually is arranged on the outer wall of the isolation valve cover (141); the hydraulic sensing mechanism (143) comprises a diaphragm shaft (148) and a diaphragm (149); one end of the diaphragm shaft (148) is in contact with the magnet sleeve (144), the other end of the diaphragm shaft is connected with the diaphragm (149), the edge of the diaphragm (149) is fixedly connected with the isolating valve cover (141), a closed cavity (150) is formed by the inner side surface of the diaphragm (149) facing the magnet sleeve (144) and the isolating valve cover (141), and the outer side surface of the diaphragm (149) can be used for sensing external hydraulic pressure; the isolating valve cover (141) is provided with a membrane cover (151), a membrane cover filter screen (152) is arranged on the membrane cover (151), and the membrane cover filter screen (152) can allow external liquid to flow into the membrane cover (151) and press the outer side face of the membrane (149).
2. The mechanically induced up-down level control valve of claim 1, wherein: a circumferential wall of the piston body (104) is provided with a one-way sealing ring (106) which only allows liquid to flow from the inlet end (101) into the pilot chamber (105).
3. The mechanically induced up-down level control valve of claim 1, wherein: a piston sealing ring (109) is arranged on one side of the piston body (104) facing the outlet end (102).
4. A mechanically induced up-down level control valve according to claim 3, characterized in that: the middle part of the piston body (104) is provided with a T-shaped pilot valve seat (110) penetrating through the piston body (104), and the pilot channel (107) is arranged in the middle part of the pilot valve seat (110).
5. The mechanically induced up-down level control valve according to claim 1 or 4, characterized in that: a valve element sealing ring (111) is arranged on the surface of the pilot valve element (108) opposite to the pilot channel (107).
6. The mechanically induced up-down level control valve of claim 1, wherein: the outer wall of the isolating valve cover (141) is provided with a spiral groove matched with the adjusting ring (147), and the adjusting ring (147) can move along the spiral groove in an adjusting way so as to adjust the distance between the adjusting ring (147) and the permanent magnet (145).
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| CN201910433269.1A CN110056702B (en) | 2019-05-23 | 2019-05-23 | Mechanical magnetic induction up-down liquid level control valve |
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| CN201910433269.1A CN110056702B (en) | 2019-05-23 | 2019-05-23 | Mechanical magnetic induction up-down liquid level control valve |
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| CN110056702B true CN110056702B (en) | 2024-05-17 |
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| CN210179039U (en) * | 2019-05-23 | 2020-03-24 | 浙江班尼戈流体控制有限公司 | Mechanical magnetic induction upper and lower liquid level control valve |
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| US5118072A (en) * | 1989-11-27 | 1992-06-02 | Matsushita Electric Works, Ltd. | Solenoid valve |
| KR200388668Y1 (en) * | 2005-03-02 | 2005-07-01 | 조찬동 | shut-off valve and pressure reducing valve |
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| CN110056702A (en) | 2019-07-26 |
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