CN107859760B - Two-way stop valve - Google Patents

Two-way stop valve Download PDF

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Publication number
CN107859760B
CN107859760B CN201711305577.3A CN201711305577A CN107859760B CN 107859760 B CN107859760 B CN 107859760B CN 201711305577 A CN201711305577 A CN 201711305577A CN 107859760 B CN107859760 B CN 107859760B
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China
Prior art keywords
valve body
inlet
valve
fluid
port
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Application number
CN201711305577.3A
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Chinese (zh)
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CN107859760A (en
Inventor
王尔琪
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Changzhou Zhongjin Medical Devices Co ltd
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Changzhou Zhongjin Medical Devices Co ltd
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Priority to CN201711305577.3A priority Critical patent/CN107859760B/en
Publication of CN107859760A publication Critical patent/CN107859760A/en
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Classifications

    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • 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
    • F16K15/00—Check valves
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
    • 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
    • F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
    • 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
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The application discloses a two-way stop valve, which comprises: a valve body, a switch device, which is arranged on the valve body and is used for opening and closing operations; the first inlet and the second inlet are arranged in the valve body and are connected with the switch device; a first outlet and a second outlet; the first channel is arranged on the valve body and communicated with the first inlet and the first outlet; the second channel is arranged on the valve body and communicated with the second inlet and the second outlet; the first inlet and the second inlet are respectively provided with a unidirectional circulation device for preventing the fluid from flowing out reversely; the first outflow port and the second inflow port are respectively provided with the unidirectional circulating device to prevent the reverse inflow of fluid; the first inlet is communicated with the second inlet. The flow direction can be switched according to the requirement, and the leakage of fluid can not be generated; simple structure and convenient realization.

Description

Two-way stop valve
Technical Field
The application relates to the technical field of stop valves, in particular to a bidirectional stop valve.
Background
Two-position two-way valves on the market at present; the fluid enters from the left end, and the sealing element keeps sealing with the hole below due to the downward pressure of the spring and the downward pressure of the fluid on the sealing element, so that the fluid cannot flow out from the right side; when the electromagnetic coil is electrified, magnetic force is generated, the iron core component is attracted upwards (F attraction is greater than F spring), and the fluid flows to the right side through the hole below the sealing element; fluid may also enter from the right end, but when the fluid pressure at the right end is greater than the spring pressure + the left fluid pressure, the seal will not seal and leakage will occur.
That is, the fluid in the existing two-position two-way valve enters and exits in a fixed direction, and when the fluid flows reversely, the leakage phenomenon is easy to occur; if the purpose of switching the flow direction according to the requirement is to be realized, two existing two-position two-way electromagnetic valves are needed to be connected in reverse series on a pipeline, the number of the valves is increased, the power consumption is increased, and the structure is complex.
In view of the above drawbacks, the present inventors have finally achieved the present application through long-time studies and practices.
Disclosure of Invention
In order to solve the technical defects, the technical scheme adopted by the application is that the bidirectional stop valve comprises:
a valve body, a valve body and a valve body,
a switch device which is arranged on the valve body and performs opening and closing operations;
a first inlet and a second inlet, which are arranged in the valve body and are communicated with the switch device;
the first outflow port and the second outflow port are arranged in the valve body and are communicated with the switch device, and the first outflow port and the second inflow port are communicated under the condition that the switch device is opened; when the switching device is closed, the first inlet and the second inlet are disconnected;
the first channel is arranged on the valve body and communicated with the first inlet and the first outlet;
the second channel is arranged on the valve body and communicated with the second inlet and the second outlet;
the first inlet and the second inlet are respectively provided with a unidirectional circulation device for preventing the fluid from flowing out reversely;
the first outflow port and the second outflow port are respectively provided with the unidirectional circulating device, so that the reverse inflow of fluid is prevented;
the first inlet is communicated with the second inlet.
Preferably, the switch device comprises an actuating mechanism and a pipe orifice, and the pipe orifice is communicated with the first outflow orifice and the second outflow orifice; the action mechanism is driven by a motor or a coil and is communicated with the first inlet and the second inlet to generate opening/closing actions; the tail end of the actuating mechanism abuts against the pipe orifice.
Preferably, the valve body comprises an upper valve body, a middle valve body and a lower valve body, and the upper valve body, the middle valve body and the lower valve body are fixedly connected.
Preferably, the first inlet and the second inlet are arranged in the upper valve body, and the lower end of the first inlet penetrates out of the lower end face of the upper valve body; the upper ends of the first outflow port and the second outflow port are arranged in the upper valve body, the lower ends of the first outflow port and the second outflow port penetrate through the lower end face of the upper valve body and the middle valve body, and the pipe orifice penetrates through the upper valve body and the middle valve body.
Preferably, the lower end surface of the upper valve body is provided with valve chambers, and the four valve chambers are respectively arranged at the position where the first inlet passes through the upper valve body, the position where the second inlet passes through the upper valve body, the position where the first outlet passes through the upper valve body and the position where the second outlet passes through the upper valve body, so as to accommodate the corresponding unidirectional circulation device.
Preferably, the valve chamber upper end corresponding to the first inlet and the second inlet is provided with a circulation port, the circulation port is used for circulating fluid in the first inlet and the second inlet, and the position of the upper end face of the middle valve body corresponding to the valve chamber is provided with a fixing protrusion.
Preferably, the unidirectional flow device comprises a valve plate and a valve plate spring, wherein one end of the valve plate spring is sleeved on the fixing protrusion, and the other end of the valve plate spring is sleeved with the inner side of the valve plate and is used for abutting against the valve plate; the valve plate abuts against the circulation port to break circulation of the fluid.
Preferably, an elastic pad is embedded on one side of the valve plate facing the flow port.
Preferably, the flow port protrudes outwards towards one side of the valve plate, so that the sealing effect can be enhanced.
Preferably, a sealing gasket is arranged between the upper valve body and the middle valve body, the sealing gasket is provided with at least one hole, and the position where the first inlet passes through the upper valve body, the position where the second inlet passes through the upper valve body, the position where the first outlet passes through the upper valve body, the position where the second outlet passes through the upper valve body and the position where the pipe orifice passes through the upper valve body are sealed around at least one part.
Compared with the prior art, the application has the beneficial effects that: the flow direction (the side with high fluid pressure to the side with low fluid pressure) can be switched at any time according to the requirements, and when the switch device is closed, the leakage of fluid can not be generated; simple structure and convenient realization.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic illustration of the present application in a two-way shut-off valve closed state;
FIG. 2 is a schematic view of the two-way shut-off valve of the present application in an open state;
FIG. 3 is a schematic illustration of a sixth embodiment of a two-way shut-off valve of the present application;
FIG. 4 is an exploded view of the two-way shut-off valve of the present application;
FIG. 5 is a second exploded view of the two-way shut-off valve of the present application;
FIG. 6 is an enlarged view of a portion I of the two-way shut-off valve of the present application;
FIG. 7 is a block diagram of the plunger of the two-way shut-off valve of the present application;
FIG. 8 is a top view of the two-way shut-off valve of the present application;
FIG. 9 is a cross-sectional view of the two-way shut-off valve A-A of the present application;
FIG. 10 is a cross-sectional view of the two-way shut-off valve B-B of the present application;
FIG. 11 is a cross-sectional view of the two-way shut-off valve C-C of the present application;
FIG. 12 is a cross-sectional view of the two-way shut-off valve E-E of the present application;
fig. 13 is an enlarged view of a portion II of the two-way shut-off valve of the present application.
Detailed Description
The above and further technical features and advantages of the present application are described in more detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and 2, it is; wherein, two-way stop valve includes:
a valve body 3 is provided which is arranged in the valve body,
a switching device 4 provided on the valve body 3 for opening and closing operations;
a first inlet 11 and a second inlet 21, which are provided in the valve body 3 and communicate with the switching device 4;
a first outflow opening 12 and a second outflow opening 22, which are arranged in the valve body 3 and communicate with the switching device 4, and with the first inflow opening 11 and the second inflow opening 21 when the switching device 4 is opened; with the switching device 4 closed, the second inlet opening 21 is disconnected from the first inlet opening 11;
a first channel 1, which is arranged on the valve body 3 and is communicated with the first inlet 11 and the first outlet 12;
a second passage 2 provided on the valve body 3 and communicating with the second inlet 21 and the second outlet 22;
the first inlet 11 and the second inlet 21 are respectively provided with a unidirectional circulation device 5 for preventing the fluid from flowing out reversely;
the first outflow port 12 and the second outflow port 22 are respectively provided with the unidirectional flow device 5, so that the reverse inflow of fluid is prevented.
For convenience of description, we refer to the side of the unidirectional flow means 5 facing the switching means 4 as the inner side and the side facing away from the switching means 4 (facing the first channel 1/the second channel 2) as the outer side, such that the unidirectional flow means 5 in the first inlet 11 and the second inlet 21 will allow the passing fluid to flow from the outer side to the inner side only; the unidirectional flow means 5 in the first 12 and second 22 outflow openings will allow fluid to flow only from the inside to the outside.
Thus, if fluid enters from the first channel 1, the fluid enters the first inlet 11 and the first outlet 12 which are communicated with the first channel 1, and the fluid is blocked outside the unidirectional flow device 5 because the unidirectional flow device 5 is arranged at the first outlet 12; the fluid entering the first inlet 11 will pass through the unidirectional flow means 5 therein until it contacts the switching means 4; in this way, without opening the switching device 4, the fluid is blocked on one side of the switching device and no leakage to the second channel 2 due to excessive fluid pressure occurs; if the first inlet 11 and the second inlet 21 are not strictly isolated, fluid will enter the second inlet 21 through the first inlet 11, and due to the unidirectional flow device 5 in the second inlet 21, the fluid will be blocked inside the unidirectional flow device 5 and will not enter the second channel 2 communicating with the second inlet 21; in this case, when the switch is opened, fluid will enter (via the switching means 4) the first outlet 12 and the second outlet 22; at this time, at the first outflow port 12, the fluid enters the first outflow port 12 and contacts the inner side of the unidirectional flow device 5, at this time, the fluid entering the first outflow port 12 from the first channel 1 but blocked by the unidirectional flow device 5 is accumulated at the outer side of the unidirectional flow device 5, for reasons such as the flowing direction of the fluid at the outer side of the unidirectional flow device 5 (it can be considered that if the fluid flows from the first channel 1 to the second channel 2, the pressure of the fluid in the first channel 1 is greater than the pressure of the fluid in the second channel 2), the generated pressure is greater than the pressure generated by the fluid at the inner side thereof, and the pressure difference forces the unidirectional flow device 5 to maintain the closed state, so that the fluid at the inner side of the unidirectional flow device 5 cannot flow to the outer side; at this time, at the second outflow port 22, the fluid enters the second outflow port 22 and contacts the inner side of the unidirectional flow device 5, and since the outer side of the unidirectional flow device 5 is empty (or the pressure is smaller than the pressure of the inner side) and the fluid flow direction is forward (i.e. the flow direction is the same as the direction in which the unidirectional flow device 5 allows the fluid to flow), the unidirectional flow device 5 is opened, and the fluid flows out from the second outflow port 22 through the unidirectional flow device 5 and enters the second channel 2.
After the fluid enters the second channel 2, the fluid enters the second inlet 21 along the connection port between the second channel 2 and the second inlet 21 and contacts the outer side of the unidirectional flow device 5 of the second inlet 21; at this time, the fluid flowing from the first inlet 11 into the second inlet 21 is collected on the inner side of the unidirectional flow device 5, and the fluid on the inner side is forced to keep the unidirectional flow device 5 in a closed state due to the flowing direction (it is considered that if the fluid flows from the first channel 1 to the second channel 2, the pressure of the fluid in the first channel 1 is greater than the pressure of the fluid in the second channel 2), the generated pressure is greater than the pressure of the fluid on the outer side, and the direction of the pressure difference is opposite to the forward direction of the unidirectional flow device 5, so that the fluid on the outer side of the unidirectional flow device 5 cannot flow to the inner side.
Conversely, if fluid flows from the second channel 2 into the first channel 1, the specific process is opposite to the above-described process.
Thus, the flow direction (the side with the higher fluid pressure to the side with the lower fluid pressure) can be switched at any time according to the requirement, and the leakage of the fluid can not be generated when the switch device 4 is closed; simple structure and convenient realization.
The fluid may be liquid or gas, and is selected according to practical situations.
Example 2
The two-way stop valve according to the above-mentioned embodiment is different from the two-way stop valve in that the switching device 4 includes an actuating mechanism 6 and a nozzle 42, and the nozzle 42 is communicated with the first outflow port 12 and the second outflow port 22; the actuating mechanism 6 is communicated with the first inlet 11 and the second inlet 21 to generate opening/closing actions; the tail end of the actuating mechanism 6 is connected with the pipe orifice 42, and after the closing action is generated, the tail end of the actuating mechanism 6 is propped against the pipe orifice 42 to seal the pipe orifice 42.
Thus, after the actuating mechanism 6 generates the opening action, the tail end of the actuating mechanism 6 leaves the pipe orifice 42, so that the pipe orifice 42 is opened, and the first inlet 11 and the second inlet 21 are communicated with the first outlet 12 and the second outlet; after the actuating mechanism 6 performs a closing action, the tail end of the actuating mechanism 6 abuts against the pipe orifice 42, so that the pipe orifice 42 is closed, and the first inlet 11 and the second inlet 21 are disconnected from the first outlet 12 and the second outlet.
The switching device 4 may be a normally open switching device 4, so that the actuating mechanism 6 keeps on, and generates a closing action to disconnect the first inlet 11 and the second inlet 21 from the first outlet 12 and the second outlet after receiving an external signal.
The switching device 4 may be a normally closed switching device 4, such that the actuating mechanism 6 keeps the closing operation, and generates the opening operation after receiving the external signal, so that the first inlet 11 and the second inlet 21 communicate with the first outlet 12 and the second outlet.
Example 3
The two-way stop valve according to the above-mentioned embodiment is different from the two-way stop valve in that the first inlet 11 and the second inlet 21 are in communication, so that the structure is simple, and the first inlet 11 and the second inlet 21 are respectively provided with a one-way circulation device 5, so as to prevent leakage of fluid possibly caused by communication.
Example 4
As described above, the present embodiment is different from the above-described two-way shut-off valve in that the first inlet 11 and the second inlet 21 are isolated from each other, so that the fluid flowing in from the first inlet 11/the second inlet 21 can be directly prevented from leaking from the second inlet 21/the first inlet 11; and there is no need to provide one-way flow means 5 in said first inlet 11/said second inlet 21. Simple structure and convenient use.
Example 5
The two-way stop valve according to the present embodiment is different from the above-described two-way stop valve in that the actuating mechanism 6 includes: a plunger 61, a coil 62, a spring 63, and a nut 64; the coil 62 is arranged on the valve body 3 of the two-way stop valve, and the inside of the coil is hollow; the nut 64 is fixed to one end of the coil 62; the movable iron core 61 is arranged in the hollow interior of the coil 62, and one end of the movable iron core abuts against the pipe orifice 42; the spring 63 has one end fixed to the nut 64 and the other end fixed to the movable iron core 61, and resets the movable iron core 61.
Thus, in use, the plunger 61 abuts against the nozzle 42, so that the first inlet 11 and the second inlet 21 are disconnected from the first outlet 12 and the second outlet 22; when communication is needed, the coil 62 is electrified to generate an electromagnetic field; the movable iron core 61 moves away from the pipe orifice 42 and the compression spring 63 moves towards the nut 64 under the action of the electromagnetic field, so that the first inlet 11 and the second inlet 21 are communicated with the first outlet 12 and the second outlet 22; after the power is applied, the electromagnetic field generated by the coil 62 disappears, and the movable iron core 61 is reset under the action of the spring 63 and abuts against the pipe orifice 42, so that the first inlet 11 and the second inlet 21 are disconnected from the first outlet 12 and the second outlet 22.
Thus, the on-off of the first channel 1 and the second channel 2 can be controlled by electrifying; the structure is simple, the control is convenient, and the fluid at the two ends of the valve can be controlled to enter and exit (one-time flow with high pressure and low side pressure) only by one electromagnetic coil 62 assembly; and control of a large path (large flow rate) is achieved by the low power coil 62.
Wherein, a groove 611 is formed at the fixed end of the movable iron core 61 and the spring 63 for storing the compressed spring 63; and also plays a limiting role (after the edge of the groove 611 abuts against the nut 64, the movable iron core 61 reaches the highest position).
The movable iron core 61 is vertically arranged, and the upper end of the movable iron core is fixed with the spring 63; like this, moving iron core 61 receives the combined action of gravity and spring 63 elasticity when the reset, and it is convenient to reset, and can be because gravity effect automatic reset after spring 63 breaks down, improves life.
Example 6
The two-way stop valve according to the present embodiment is different from the above-described two-way stop valve in that, as shown in fig. 3, the actuating mechanism 6 includes: a motor 66, a push rod 67 and a fixed sleeve 68; the fixed sleeve is arranged on the valve body 3 of the two-way stop valve, and the inside of the fixed sleeve is hollow; the motor is arranged at one end of the fixed sleeve; one end of the ejector rod abuts against the pipe orifice 42, and the other end of the ejector rod penetrates through the hollow inside the fixed sleeve to be connected with the motor, and is driven by the motor to act.
Thus, when in use, when the motor needs to be disconnected, the motor drives the ejector rod to abut against the pipe orifice 42, so that the first inlet 11 and the second inlet 21 are disconnected from the first outlet 12 and the second outlet 22; when the first inlet and the second inlet are communicated with the first outlet 12 and the second outlet 22, the motor drives the ejector rod to leave the pipe orifice 42, so that the first inlet 11 and the second inlet 21 are communicated with the first outlet 12 and the second outlet 22.
In this way, the first inlet 11 and the second inlet 21 are connected/disconnected with the first outlet 12 and the second outlet 22 according to actual needs; simple structure and convenient use.
The actuating mechanism 6 further comprises a sealing gasket 34, wherein the sealing gasket 34 is arranged in the fixed sleeve and seals a gap between the ejector rod and the fixed sleeve to prevent fluid leakage.
Example 7
The two-way stop valve according to the above embodiment is different from the two-way stop valve in that the actuating mechanism 6 has a pilot structure, so that when the valve is electrified, the pilot hole is opened by electromagnetic force, the pressure of the upper chamber is rapidly reduced, a high pressure difference is formed around the closing member, the closing member is pushed to move upwards by the fluid pressure, and the valve is opened; when the power is removed, the pilot orifice is closed by the force of the spring 63, the inlet pressure enters the chamber through the bypass orifice, a low-to-high pressure differential is created around the closure member, and the fluid pressure pushes the closure member downward, closing the valve.
Therefore, the power consumption is low, the power can be frequently electrified, the power can be electrified for a long time without being burnt, and the energy is saved; the upper limit of the fluid pressure range is higher and a more accurate control effect can be achieved.
Example 8
The two-way stop valve according to the above-mentioned embodiment is different from the two-way stop valve in that the one-way flow device 5 is a one-way valve, so that the two-way stop valve is simple in structure and convenient to use.
Example 9
The two-way stop valve according to the above-mentioned embodiment is different from the two-way stop valve according to the above-mentioned embodiment in that, as shown in fig. 4-13, the actuating mechanism 6 further includes a static iron core 65, and the static iron core 65 is clamped on the valve body 3.
One end of the static iron core 65 is clamped on the valve body 3, and the other end of the static iron core is provided with external threads and is in threaded connection with the nut 64.
The coil 62 is sleeved on the stationary core 65, one end of the coil is abutted against the valve body 3, the other end of the coil is abutted against the nut 64, and the coil is fixed on the stationary core 65 by screwing the nut 64.
A power plug is arranged on one side of the coil 62 and is used for being connected with an external power supply to supply power to the coil 62.
Wherein the coil 62 is disposed coaxially with the stationary core 65.
Wherein, the diameter of the outer wall of the part of the static iron core 65 sleeved with the coil 62 is increased in a step shape from one end with external threads, thus being convenient for sleeving the coil 62 on the static iron core 65 and being convenient for installation and disassembly; the maximum diameter of the outer wall of the stationary core 65 is the same as the diameter of the inner wall of the coil 62; thus, the outer wall of the maximum diameter of the part of the static iron core 65 is attached to the inner wall of the coil 62, so that the static iron core 65 is ensured to be coaxial with the coil 62, and the coil 62 is prevented from shaking relative to the static iron core 65; the coil 62 may then be secured by threading the nut 64.
A slot 651 is arranged at one end of the static iron core 65, which is clamped with the valve body 3, and one end of the slot 651 is opened; the movable core 61 is slidably fitted in the slot 651, and slides in the axial direction of the slot 651.
The outer wall of the movable core 61 is bonded to the inner wall of the slot 651, so that movement in the radial direction of the slot 651 is prevented when the movable core 61 slides in the slot 651.
The cross section of the slot 651 may be square or other shapes, so long as the movable core 61 can slide smoothly along the slot 651.
The cross-sectional shape of the movable iron core 61 matches the cross-section of the slot 651.
Wherein the slot 651 is cylindrical and is opened toward one end of the valve body 3, so that the movable iron core 61 can slide toward the valve body 3 from the opening.
The movable iron core 61 and the stationary iron core 65 are coaxially disposed, so that the movable iron core 61 is facilitated to slide.
The side wall of the movable iron core 61 is provided with a groove 611, and the groove 611 penetrates through two ends of the movable iron core 61, so that when the movable iron core 61 is in sliding fit in the slot 651, the two ends of the movable iron core 61 are kept communicated.
Example 10
As described above, the present embodiment is different from the above-described two-way shut-off valve in that, as shown in fig. 4 to 13, the valve body 3 includes an upper valve body 31, a middle valve body 32 and a lower valve body 33, and the upper valve body 31, the middle valve body 32 and the lower valve body 33 are fixed together by screw connection, thus facilitating processing, assembly and disassembly.
A gasket 34 is provided between the upper valve body 31 and the middle valve body 32 to prevent the fluid from leaking.
A seal ring 35 is provided between the middle valve body 32 and the lower valve body 33 to prevent the fluid from leaking.
The first inlet 11 and the second inlet 21 are disposed in the upper valve body 31, and the lower end thereof passes through the lower end surface of the upper valve body 31.
The upper ends of the first outflow port 12 and the second outflow port 22 are disposed in the upper valve body 31, and the lower ends thereof penetrate through the lower end surface of the upper valve body 31 and the middle valve body 32.
The pipe orifice 42 penetrates through the upper valve body 31 and the middle valve body 32, a clamping notch 36 is formed in the upper end face of the upper valve body 31, and the action mechanism 6 (the static iron core 65) is clamped in the clamping notch 36; the upper end of the pipe orifice 42 is arranged in the clamping notch 36, and the pipe orifice 42, the clamping notch 36 and the slotted hole 651 of the static iron core 65 are communicated.
The lower end of the movable iron core 61 abuts against the upper end of the pipe orifice 42, and the communication between the pipe orifice 42 and the clamping notch 36 is disconnected.
A communication hole 311 is arranged in the upper valve body 31, one end of the communication hole 311 is communicated with the first inlet 11/the second inlet 21, and the other end is arranged in the clamping notch 36, so that the clamping notch 36 is communicated with the first inlet 11/the second inlet 21.
The lower end surface of the middle valve body 32 is provided with a communication groove 321, and the communication groove 321 is communicated with the lower end of the pipe orifice 42, the lower end of the first outflow port 12, and the lower end of the second outflow port 22.
The first channel 1 and the second channel 2 are arranged in the upper valve body 31, and the first channel 1 penetrates through the upper ends of the first inlet port 11 and the first outlet port 12 and penetrates out from one side of the upper valve body 31; the second passage 2 penetrates the upper ends of the second inlet 21 and the second outlet 22 and passes out from one side of the upper valve body 31.
The lower end surface of the upper valve body 31 is provided with a gasket groove 312 for accommodating (also having a positioning function of) the gasket 34; the gasket 34 has at least one hole, and seals at least one of the position where the first inlet 11 passes through the upper valve body 31, the position where the second inlet 21 passes through the upper valve body 31, the position where the first outlet 12 passes through the upper valve body 31, the position where the second outlet 22 passes through the upper valve body 31, and the position where the nozzle 42 passes through the upper valve body 31, so as to prevent leakage of fluid from the position along the contact portion between the lower end surface of the upper valve body 31 and the upper end surface of the middle valve body 32.
On the basis of the above, it is recommended that the gasket 34 is provided with five holes, and the periphery of the five positions are sealed to prevent fluid leakage (the leakage includes leakage from one position to the outside, and leakage from one position to another position) corresponding to the position where the first inlet 11 passes out of the upper valve body 31, the position where the second inlet 21 passes out of the upper valve body 31, the position where the first outlet 12 passes out of the upper valve body 31, the position where the second outlet 22 passes out of the upper valve body 31, and the position where the nozzle 42 passes out of the upper valve body 31.
The lower end surface of the middle valve body 32 is provided with a sealing ring groove 322 for accommodating (also having a positioning function of) the sealing ring 35; the seal ring 35 is disposed around the communication groove 321, and after the middle valve body 32 is fixed in contact with the lower valve body 33, the upper end surface of the seal ring 35 presses the inner wall of the seal ring groove 322, and the lower end surface presses the upper end surface of the lower valve body 33, so as to prevent leakage of the fluid in the communication groove 321.
The lower end surface of the upper valve body 31 is provided with valve chambers 7, and the four valve chambers 7 are respectively arranged at the position where the first inlet 11 passes through the upper valve body 31, the position where the second inlet 21 passes through the upper valve body 31, the position where the first outlet 12 passes through the upper valve body 31, and the position where the second outlet 22 passes through the upper valve body 31, and accommodate corresponding unidirectional flow devices 5 (unidirectional valves).
The upper ends of the valve chambers 7 corresponding to the first inlet 11 and the second inlet 21 are provided with a circulation port 71, the circulation port 71 is used for circulating fluid in the first inlet 11 and the second inlet 21, and a fixing protrusion 72 is arranged at the upper end surface of the middle valve body 32 corresponding to the position of the valve chamber 7.
The upper ends of the valve chambers 7 corresponding to the first outflow port 12 and the second outflow port 22 are provided with fixing protrusions 72, the upper end surface of the middle valve body 32 is provided with a circulation port 71 corresponding to the position of the valve chamber 7, and the circulation port 71 is used for circulating fluid in the first outflow port 12 and the second outflow port 22.
The unidirectional flow device 5 may be a unidirectional valve, or may be another device such as a valve that restricts the flow direction.
The one-way valve comprises a valve plate 51 and a valve plate spring 52, one end of the valve plate spring 52 is sleeved on the fixing protrusion 72, and the other end of the valve plate spring is sleeved on the inner side of the valve plate 51 and is used for abutting against the valve plate 51; the valve plate 51 abuts against the flow port 71 to interrupt the flow of the fluid.
Wherein, the valve plate 51 is embedded with an elastic pad 53 on the side facing the flow port 71, so that a better sealing effect can be achieved.
The flow port 71 protrudes outward toward one side of the valve plate 51, so that the sealing effect can be enhanced.
The spring 63 is cylindrical, and the inner diameter of the spring is the same as the outer diameter of the fixing protrusion 72, so that when the spring 63 is sleeved on the fixing protrusion 72, the connection is stable and the spring cannot move in the radial direction.
The outer diameter of the spring 63 is the same as the inner diameter of the valve plate 51, so that the side of the spring 63 against the valve plate 51 is firmly combined with the valve plate 51.
An annular protrusion 421 is arranged at one end of the pipe orifice 42, which is contacted with the movable iron core 61, so that the sealing effect is enhanced; the end surface of the movable iron core 61, which is contacted with the pipe orifice 42, is provided with a circular protrusion 612, so that the sealing effect is enhanced; the diameter of the circular protrusion is larger than the diameter of the nozzle 42 and smaller than the diameter of the movable core 61, thereby enhancing the closing effect.
Thus, when the first channel 1 is filled with fluid, the fluid passes through the first channel 1 and simultaneously enters the first inlet 11 and the first outlet 12 in the upper valve body 31; the fluid entering the first outflow port 12 directly enters the first outflow port 12, is arranged in the valve chamber 7 of the upper valve body 31 and fills the valve chamber 7, the valve plate spring 52 pushes the valve plate 51 downwards to abut against the circulation port 71, the fluid moves along the direction (downwards) of flowing into the circulation port 71, the acting force of the fluid is the same as the acting force of the valve plate spring 52 on the valve plate 51 (downwards), so that the valve plate 51 abuts against the circulation port 71 more firmly to form a sealing effect, and the fluid is blocked in the valve chamber 7; the fluid entering the first inlet 11 will pass through the first inlet 11 and be disposed in the valve chamber 7 of the upper valve body 31, in the valve chamber 7, the valve plate spring 52 pushes the valve plate 51 upwards to abut against the circulation port 71, the fluid moves along the direction (downward) of flowing out of the circulation port 71, the fluid force (downward) is opposite to the force (upward) of the valve plate spring 52 on the valve plate 51, along with the increase of the fluid pressure, the valve plate 51 is pushed away from the circulation port 71 (downward) and compresses the valve plate spring 52, the fluid enters the valve chamber 7, enters the clamping notch 36 through the communication hole 311, and gradually fills the clamping notch 36.
Assuming that the movable iron core 61 abuts against the pipe orifice 42 in the clamping notch 36 at this time, a part of fluid will enter the second inlet 21 through the communication hole 311, and another part of fluid will enter the space surrounded by the upper end of the movable iron core 61 and the slot 651 of the stationary iron core 65 through the groove 611 on the side wall of the movable iron core 61; the fluid entering the second inlet 21 will first enter the second inlet 21 and set in the valve chamber 7 of the upper valve body 31 and fill the valve chamber 7, the valve plate spring 52 pushes the valve plate 51 upward against the flow opening 71, the fluid moves along the direction of flowing into the flow opening 71 (upward), the acting force of the fluid is the same as the acting force of the valve plate spring 52 on the valve plate 51 (both upward), the valve plate 51 is more firmly abutted against the flow opening 71, a sealing effect is formed, and the fluid is blocked in the valve chamber 7; the fluid entering the upper end of the movable iron core 61 fills the space enclosed by the whole clamping notch 36 and the slotted hole 651 of the static iron core 65 together with the fluid in the clamping notch 36, and in the space, the movable iron core 61 is subjected to downward extrusion acting force of the fluid, and the gravity of the movable iron core 61 tightly abuts against the pipe orifice 42 to form a seal; at this point, the fluid is blocked.
To turn on the switch, the coil 62 needs to be energized, the coil 62 generates a magnetic field, and the movable iron core 61 moves upwards under the upward acting force of the magnetic field and simultaneously leaves the pipe orifice 42, so that the fluid flows into the pipe orifice 42; fluid flows out from the lower end of the nozzle 42, and enters the lower end of the first outflow port 12 and the lower end of the second outflow port 22 simultaneously along a communication groove 321 provided in the lower end surface of the middle valve body 32; the fluid entering the lower end of the first outflow port 12 moves upwards along the part of the first outflow port 12 penetrating the middle valve body 32 and reaches the position of the circulation port 71 on the upper end surface of the middle valve body 32, the valve chamber 7 corresponding to the circulation port 71 is the valve chamber 7 in which the first outflow port 12 is arranged in the upper valve body 31, at this time, the valve chamber 7 is already filled with the fluid, the valve plate 51 is subjected to the combined action (downward) of the valve plate spring 52 and the fluid pressure in the valve chamber 7, the fluid reaching the circulation port 71 can exert upward acting force on the valve plate 51, but the acting force does not exceed the pressure of the fluid in the valve chamber 7 at the maximum, namely, the valve plate 51 always bears the downward acting force which is not smaller than the acting force of the valve plate spring 52 and abuts against the circulation port 71 to form a seal; the fluid entering the lower end of the second outflow port 22 moves upwards along the part of the second outflow port 22 penetrating the middle valve body 32 and reaches the position of the circulation port 71 on the upper end surface of the middle valve body 32, the valve chamber 7 corresponding to the circulation port 71 is the valve chamber 7 in which the second outflow port 22 is arranged in the upper valve body 31, at this time, the valve chamber 7 is hollow, the valve plate 51 only abuts against the circulation port 71 under the downward acting force of the valve plate spring 52, the fluid below the circulation port 71 generates upward acting force on the valve plate 51, when the acting force is larger than the acting force of the valve plate spring 52, the valve plate 51 is pushed upwards, leaves the circulation port 71, and the fluid enters the valve chamber 7 and enters the second channel 2 communicated with the second outflow port 22 through the valve chamber 7.
Fluid entering the second channel 2 will also enter the second inlet 21 communicating with the second channel 2 to the flow port 71; at this time, the second inlet 21 is disposed in the valve chamber 7 of the upper valve body 31 and is filled with fluid, the valve plate 51 abuts against the flow port 71 under the upward force of the valve plate spring 52 and the fluid in the valve chamber 7 to form a seal, the fluid in the flow port 71 can only exert a downward force on the valve plate 51 not greater than the upward force of the fluid in the valve chamber 7, and the valve plate 51 can still be kept in a sealed state.
Thus, the switch is opened so that fluid enters the second channel 2 from the first channel 1; when the switch is turned off at this time, the movable iron core 61 moves downward under the action of its own weight and the spring 63 (the spring 63 mounted between the movable iron core 61 and the upper end of the slot 651 of the stationary iron core 65) and abuts against the nozzle 42 to form a seal (seal), thereby shutting off the flow of fluid and achieving the closing effect.
Conversely, if fluid enters the first channel 1 from the second channel 2, the process is reversed.
Thus, the fluid can be made to flow as needed (the side with the higher pressure flows to the side with the lower pressure) without requiring a fixed fluid inlet-outlet direction; only one switching device 4 (one coil 62) is needed to control the fluid in and out of two channels of the valve body 3, so that the valve is simple and convenient; the reverse flow of the fluid can be prevented, and leakage can not occur; and control of the high flow rate is achieved by the low power coil 62.
Example 11
As described above, the present embodiment is different from the above-described two-way stop valve in that the spring 63 is not disposed between the movable iron core 61 and the upper end of the slot 651 of the stationary iron core 65, so that the movable iron core 61 is reset under the action of gravity after the coil 62 is energized; the arrangement is simple and convenient, but the prevention direction of the two-way stop valve is additionally required.
Example 12
The two-way shut-off valve according to the present embodiment is different from the two-way shut-off valve described above in that, in the one-way valve, one end of the valve plate 51 is rotatably provided in the same end face as the flow port 71, and the other end is rotated around the position; the valve plate spring 52 is a torsion spring, and one end of the torsion spring abuts against the valve plate 51, and the other end abuts against the end surface, so that the valve plate 51 abuts against the flow port 71.
Thus, the space requirement on the valve chamber 7 of the upper valve body 31 is small, the arrangement is convenient, the use is simple, and the structure is compact.
The arrangement of the fixing protrusion 72, the flow port 71, etc. in the valve chamber 7 is determined according to the flow direction of the check valve, but in specific applications, the flow direction of the check valve can be changed by arranging a U-shaped flow inlet/outlet, and the skilled person can also change the flow direction in other feasible ways, so that the flow direction is more suitable for practical needs, and the skilled person should consider this when understanding the specific content of the present application.
The above-mentioned azimuth determination concerning top, bottom, vertical, horizontal, up, down, etc. is based on the vertical installation of the two-way stop valve, at this time, the screw etc. therein is in a vertical state; if the bi-directional shut-off valve is mounted horizontally or obliquely or in other directions, the corresponding orientation determination and description will also change, but the changes will not change the relative orientation and relative position of the various components, which should be considered by those skilled in the art when appreciating the specific details of the present application.
The foregoing description of the preferred embodiment of the application is merely illustrative of the application and is not intended to be limiting. It will be appreciated by persons skilled in the art that many variations, modifications, and even equivalents may be made thereto without departing from the spirit and scope of the application as defined in the appended claims.

Claims (6)

1. A bi-directional shut-off valve, comprising:
a valve body, a valve body and a valve body,
a switch device which is arranged on the valve body and performs opening and closing operations;
a first inlet and a second inlet, which are arranged in the valve body and are communicated with the switch device;
the first outflow port and the second outflow port are arranged in the valve body and are communicated with the switch device, and the first outflow port and the second inflow port are communicated under the condition that the switch device is opened; when the switching device is closed, the first inlet and the second inlet are disconnected;
the first channel is arranged on the valve body and communicated with the first inlet and the first outlet;
the second channel is arranged on the valve body and communicated with the second inlet and the second outlet;
the first inlet and the second inlet are respectively provided with a unidirectional circulation device for preventing the fluid from flowing out reversely;
the first outflow port and the second outflow port are respectively provided with the unidirectional circulating device, so that the reverse inflow of fluid is prevented;
the first inlet is communicated with the second inlet;
the switching device comprises an action mechanism and a pipe orifice, and the pipe orifice is communicated with the first outflow orifice and the second outflow orifice; the action mechanism is driven by a motor or a coil and is communicated with the first inlet and the second inlet to generate opening/closing actions; the tail end of the action mechanism is propped against the pipe orifice;
the valve body comprises an upper valve body, a middle valve body and a lower valve body, and the upper valve body, the middle valve body and the lower valve body are fixedly connected;
the first inlet and the second inlet are arranged in the upper valve body, and the lower end of the first inlet and the second inlet penetrate out of the lower end face of the upper valve body; the upper ends of the first outflow port and the second outflow port are arranged in the upper valve body, the lower ends of the first outflow port and the second outflow port penetrate through the lower end face of the upper valve body and the middle valve body, and the pipe orifice penetrates through the upper valve body and the middle valve body;
the valve is characterized in that a valve chamber is arranged on the lower end face of the upper valve body, and the four valve chambers are respectively arranged at the position where the first inlet passes through the upper valve body, the position where the second inlet passes through the upper valve body, the position where the first outlet passes through the upper valve body and the position where the second outlet passes through the upper valve body, so that the corresponding unidirectional circulation device is accommodated.
2. The two-way stop valve according to claim 1, wherein the upper ends of the valve chambers corresponding to the first inlet and the second inlet are provided with flow ports for flowing fluid in the first inlet and the second inlet, and the upper end surface of the middle valve body is provided with fixing protrusions corresponding to the positions of the valve chambers.
3. The two-way stop valve as claimed in claim 2, wherein the one-way circulation device comprises a valve plate and a valve plate spring, one end of the valve plate spring is sleeved on the fixing protrusion, and the other end of the valve plate spring is sleeved with the inner side of the valve plate and is used for abutting against the valve plate; the valve plate abuts against the circulation port to cut off the circulation of fluid.
4. A two-way shut-off valve as in claim 3 wherein said valve plate has an elastomeric pad inlaid on a side thereof facing said flow port.
5. The bi-directional shut-off valve of claim 3 or 4 wherein said flow port protrudes outwardly toward one side of said valve plate.
6. The bi-directional shut-off valve of any one of claims 1-4 wherein a gasket is disposed between said upper valve body and said middle valve body, said gasket having at least one hole sealing around at least one of a location where said first inlet port passes out of said upper valve body, a location where said second inlet port passes out of said upper valve body, a location where said first outlet port passes out of said upper valve body, a location where said second outlet port passes out of said upper valve body, and a location where said nozzle passes out of said upper valve body.
CN201711305577.3A 2017-12-11 2017-12-11 Two-way stop valve Active CN107859760B (en)

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Publication number Priority date Publication date Assignee Title
CN110939760A (en) * 2018-09-21 2020-03-31 江苏乾诚环境科技有限公司 One-way valve with controllable direction
CN112984158B (en) * 2021-03-01 2023-03-10 安徽斯瑞尔阀门有限公司 Flow direction controllable bidirectional backflow valve and installation method thereof
CN113294560B (en) * 2021-04-28 2022-08-19 北京航天发射技术研究所 High-pressure bidirectional switching electric stop valve

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US3851799A (en) * 1969-04-22 1974-12-03 Fab Distribution Cosmetique Di Valve for the distribution under pressure of a liquid or paste product
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CN101852302A (en) * 2010-05-24 2010-10-06 杭州春江阀门有限公司 Low-resistance self-discharge backflow preventer
CN102200425A (en) * 2010-03-25 2011-09-28 雅马哈株式会社 Apparatus for detecting displacement of electromagnetic actuator
CN202091276U (en) * 2011-05-17 2011-12-28 衡阳三创工程机械有限公司 Multi-speed return flow solenoid valve
AU2014274528A1 (en) * 2008-05-16 2015-01-22 Joe Santa & Associates Pty Limited A valve and diaphragm for a pump
CN207569263U (en) * 2017-12-11 2018-07-03 常州中进医疗器材股份有限公司 A kind of two-way shut-off valve

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851799A (en) * 1969-04-22 1974-12-03 Fab Distribution Cosmetique Di Valve for the distribution under pressure of a liquid or paste product
CN2093941U (en) * 1991-07-13 1992-01-22 汤有政 Water-pumping valve
CN101000114A (en) * 2006-12-26 2007-07-18 常州纺织服装职业技术学院 Delay self-closing water-saving valve
CN101187431A (en) * 2007-12-28 2008-05-28 辽宁能发伟业能源科技有限公司 Hydraulic control valve switch speed control device
AU2014274528A1 (en) * 2008-05-16 2015-01-22 Joe Santa & Associates Pty Limited A valve and diaphragm for a pump
CN102200425A (en) * 2010-03-25 2011-09-28 雅马哈株式会社 Apparatus for detecting displacement of electromagnetic actuator
CN101852302A (en) * 2010-05-24 2010-10-06 杭州春江阀门有限公司 Low-resistance self-discharge backflow preventer
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CN207569263U (en) * 2017-12-11 2018-07-03 常州中进医疗器材股份有限公司 A kind of two-way shut-off valve

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