CN112112981B - High leakproofness gas solenoid valve - Google Patents
High leakproofness gas solenoid valve Download PDFInfo
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- CN112112981B CN112112981B CN202011139083.4A CN202011139083A CN112112981B CN 112112981 B CN112112981 B CN 112112981B CN 202011139083 A CN202011139083 A CN 202011139083A CN 112112981 B CN112112981 B CN 112112981B
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- iron core
- valve
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- sealing
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—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
- 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
- F16K1/16—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 with pivoted closure-members
- F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
- F16K1/20—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
- F16K1/2021—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member with a plurality of valve members
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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
- F16K1/16—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 with pivoted closure-members
- F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
- F16K1/20—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
- F16K1/2042—Special features or arrangements of the sealing
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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
- F16K1/32—Details
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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
- F16K27/12—Covers for housings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a high-sealing gas electromagnetic valve which comprises a valve body, a valve cover, a fixed iron core, a movable iron core, an electromagnetic coil and a valve core, wherein the valve cover is arranged on the valve body; the valve body comprises a main channel and an installation channel which is vertical and communicated with the main channel, two oppositely arranged openings of the main channel are respectively an air inlet and an air outlet, the valve cover is hermetically connected with the installation channel, an installation cylinder is fixed on the valve cover, a fixed iron core is arranged in the installation cylinder, one end of the movable iron core movably penetrates through the valve cover, the other end of the movable iron core is positioned under the fixed iron core, an electromagnetic coil is wound on the fixed iron core, and a valve core is further arranged in the valve body; the valve core comprises two first sealing blocks which are positioned in the main channel when the electromagnetic valve is in a closed state, and a locking mechanism and a lifting mechanism which firstly draw the two first sealing blocks in the main channel under the installation channel and then ascend into the installation channel when the electromagnetic valve is opened, wherein the movable iron core is connected with the lifting mechanism, and the telescopic end of the lifting mechanism is connected with the locking mechanism.
Description
Technical Field
The invention relates to the field of gas electromagnetic valves, in particular to a high-sealing gas electromagnetic valve.
Background
The gas electromagnetic valve is also called a gas emergency cut-off valve, and is an actuating mechanism which is suitable for two-position on-off switching of pipelines for heating and burning media of various gases such as city gas, liquefied petroleum gas, natural gas and the like, and can automatically control the temperature. It is widely used in gas heat setting in textile industry and printing industry, kiln heating in glass and bulb industry, and gas heating automatic control system in other industries.
The electromagnetic valve is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatic pressure. Used in industrial control systems to regulate the direction, flow, velocity and other parameters of a medium. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured. There are many types of solenoid valves, with different solenoid valves functioning at different locations in the control system, the most common being one-way valves, safety valves, directional control valves, speed control valves, etc.
The utility model discloses a be CN210770266U, the utility model discloses in through installing the baffle on the sealing plug and sealed awl improve sealed effect, when the valve is opened to needs, move the iron core through magnetic control and promote to the connecting rod drives the sealing plug and goes up and down, seals in sealed awl inserts the valve port, and strengthens sealing the valve port through the baffle, and its weak point lies in: 1. when the sealing plug, the baffle plate and the sealing cone are used for sealing, sealing is only carried out at the valve port, so that the situations that when one of the valve port, the sealing performance cannot be ensured and gas leaks when the other valve port is damaged cannot be avoided; 2. when the valve needs to be opened for a long time, the valve needs to be electrified for a long time, and energy consumption is wasted; 3. the electromagnetic force of the electromagnetic coil, the fixed iron core and the movable iron core is easily damaged after long-time electrification, and the cost is high.
Disclosure of Invention
Based on the above-mentioned disadvantages in the prior art, the present invention provides a high-sealing solenoid valve, which can be opened or closed by a locking mechanism and a lifting mechanism.
The invention overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps: a high-sealing gas electromagnetic valve comprises a valve body, a valve cover, a fixed iron core, a movable iron core, an electromagnetic coil and a valve core;
the valve body comprises a main channel and an installation channel which is vertical and communicated with the main channel, two oppositely arranged openings of the main channel are respectively an air inlet and an air outlet, the valve cover is connected with the installation channel in a sealing manner, an installation cylinder is fixed on the valve cover, a fixed iron core is arranged in the installation cylinder, one end of the movable iron core movably penetrates through the valve cover, the other end of the movable iron core is positioned under the fixed iron core, an electromagnetic coil is wound on the fixed iron core, and a valve core is further arranged in the valve body;
the valve core comprises two first sealing blocks which are positioned in the main channel when the electromagnetic valve is in a closed state, and a locking mechanism and a lifting mechanism which firstly draw the two first sealing blocks in the main channel under the installation channel and then lift the two first sealing blocks in the installation channel when the electromagnetic valve is opened, wherein the movable iron core is connected with the lifting mechanism, and the telescopic end of the lifting mechanism is connected with the locking mechanism.
As a further scheme of the invention, the lifting mechanism comprises a sliding rod, a second sleeve and a second sealing block;
the second sealing block is arranged in the installation channel in a sliding mode, one end of the sliding rod is fixed to the lower end face of the second sealing block, the other end of the sliding rod is connected with the locking mechanism, the sliding rod and the second sealing block are sleeved with the second sleeve in a sliding mode, one end of the second sleeve is fixed to the lower end face of the movable iron core, and the other end of the second sleeve is connected with the locking mechanism.
As a further scheme of the invention, one end of the second sleeve, which is slidably sleeved with the slide bar, is provided with a plurality of guide blocks at equal intervals, and the second sealing block is provided with a pair of through grooves corresponding to the guide blocks.
As a further scheme of the invention, the locking mechanism comprises a first spring, a telescopic rod, a connecting rod and a first sleeve;
equal detachable installs first sleeve on two first sealed pieces, first spring housing is established on the telescopic link, one end and sliding bar connection, the other end and first sleeve outer wall butt, telescopic link one end and sliding bar connection, the other end and the sliding sleeve of first telescopic open end slip registrate, connecting rod one end is articulated with first sleeve outer wall, and the other end is connected with the flexible end of second sleeve.
As a further scheme of the invention, the lifting mechanism further comprises a pull rod, one end of the pull rod is fixed on the upper end face of the movable iron core, and the other end of the pull rod sequentially penetrates through the fixed iron core and the mounting cylinder in a sliding mode and is fixedly provided with a round handle.
As a further scheme of the invention, the locking mechanism further comprises an installation seat and a threaded rod, the installation seat is sleeved on the pull rod and fixed on the outer wall of the installation cylinder, a threaded through hole perpendicular to the pull rod is formed in the installation seat, and the threaded end of the threaded rod penetrates through the threaded through hole to be in sliding contact with the outer wall of the pull rod.
As a further scheme of the invention, the locking mechanism further comprises a baffle plate, a partition plate, a magnet, a ball, a second spring and a second through hole;
the baffle is fixed and is located the sealed piece top of second in the installation passageway, the baffle is fixed in the main entrance and is located the slide bar center pin under, two all install magnet, two on the opposite face of first sealed piece the magnetism of magnet is different, the second through-hole sets up on the slide bar, the second spring is located the second through-hole, and slide bar inner wall is connected to one end, and the other end is fixed with the ball, spout sliding fit between ball and a plurality of equidistant guide blocks.
As a further scheme of the invention, the electromagnetic valve further comprises a third spring, the third spring is sleeved on the second sleeve, one end of the third spring is connected with the valve cover, and the other end of the third spring is connected with the upper end face of the second sealing block.
Compared with the prior art, the invention has the following advantages by adopting the structure:
1. the two first sealing blocks arranged oppositely and the second sealing block are used for respectively sealing the air inlet, the air outlet and the mounting channel of the main channel, the two first sealing blocks arranged oppositely realize multiple sealing of the main channel of the valve body, the sealing effect is improved, the second sealing block is used for sealing the mounting channel, the first sealing block in the air inlet is damaged when the electromagnetic valve is opened or in the closing state of the electromagnetic valve, the gas is prevented from leaking from the gap of the valve cover, the sealing effect is good, the structure is simple, and the safety and the convenience are realized;
2. the two first sealing blocks which are oppositely arranged and the locking mechanism are detachably mounted, so that the electromagnetic valve is prevented from being used for too long time, the sealing effect of the sealing blocks is reduced, the sealing blocks can be conveniently checked and replaced at regular intervals, the sealing effect is improved, and the cost is reduced;
3. by arranging the telescopic rod, the first sleeve, the connecting rod and the first spring, when the power is on, the movable iron core moves upwards due to electromagnetic force, the second sleeve slides up and down with a lug arranged on the second sealing block through the chute, thereby driving the first sleeve to slide on the telescopic rod through the hinged connecting rod to compress the first spring, drawing together and locating the two oppositely arranged first sealing blocks which are respectively located at the air inlet and the air outlet under the installation channel, continuously lifting the second sleeve, lifting the two oppositely arranged first sealing blocks after drawing together through the slide rod, therefore, the two first seals which are oppositely arranged are accommodated in the installation channel, the two first seals are clamped in the installation channel by utilizing the friction force between the first seals and the inner wall of the installation channel and the elastic force of the first spring, and the valve can still keep an open state after power failure, so that the energy consumption is saved, and the operation is convenient;
4. when the electromagnetic valve needs to be opened for a long time, after the electromagnetic valve is powered on to open the valve, the pull rod is fixed on the mounting seat by rotating the threaded rod, the valve still keeps an open state after power failure, and the rising height of the first sealing block is adjusted by pulling the pull rod to fix the length of the pull rod up and down to adjust the flow of gas, so that energy consumption is saved, and the operation is convenient;
5. the stroke of the movable iron core and the fixed iron core is increased by arranging the baffle, the partition plate, the magnet, the ball, the second spring and the second through hole, the first sealing block is folded under the action of the locking mechanism after being electrified, the slide rod is driven by the ball second sleeve to be accommodated in the installation channel, the upper end face of the second sealing block just triggers the power switch of the lower end face of the baffle to close the power, the first sealing blocks on the inner wall of the installation channel clamp the two first sealing blocks in the installation channel through friction force and the elastic force of the first spring, the valve can still keep an opening state, when the valve needs to be closed, the valve is electrified again, the movable iron core continues to ascend, the second sleeve compresses the ball under the action of the baffle, the slide rod does not move, the two opposite first sealing blocks are continuously drawn together through the connecting rod to generate magnetic force by two opposite electromagnets, the two first sealing blocks are folded and separated from the inner wall of the installation channel, after the power failure, the valve is closed under the action of the gravity and the elastic force of the third spring, so that the energy consumption is saved, the structure is simple, the operation is convenient, and the mechanization is high.
6. Through set up guide block and second seal block and slide bar slip registrate in telescopic one end of second for move the iron core and drive the second sleeve and slide from top to bottom earlier when opening or closing the valve, rethread locking mechanism drives the slide bar and slides from top to bottom, simple structure, convenient operation.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is an enlarged view of a in fig. 1.
Fig. 3 is a schematic structural view of the second seal block and the second sleeve.
Fig. 4 is a schematic structural view of the ball.
Fig. 5 is another embodiment of the present invention.
In the figure: 1-a valve body; 2-valve cover; 3, fixing an iron core; 4-a movable iron core; 5-an electromagnetic coil; 6, installing a channel; 7-an air inlet; 8-air outlet; 9-mounting the cylinder; 10-a first sealing block; 11-a first spring; 12-a telescopic rod; 13-a connecting rod; 14-a first sleeve; 15-a slide bar; 16-a second sleeve; 17-a second sealing block; 18-a tie rod; 19-a mounting seat; 20-a threaded rod; 21-a guide block; 22-a through slot; 23-a baffle plate; 24-a separator; 25-a magnet; 26-a ball bearing; 27-a second spring; 28-a second via; 29-a third spring; 30-chute.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
As shown in fig. 1, in the embodiment of the present invention, a high-sealing gas electromagnetic valve includes a valve body 1, a valve cover 2, a fixed iron core 3, a movable iron core 4, an electromagnetic coil 5, and a valve core;
the valve body 1 comprises a main channel and an installation channel 6 which is vertical and communicated with the main channel, two opposite openings of the main channel are respectively an air inlet 7 and an air outlet 8, the valve cover 2 is hermetically connected with the installation channel 6, an installation cylinder 9 is fixed on the valve cover 2, a fixed iron core 3 is arranged in the installation cylinder 9, one end of the movable iron core 4 movably penetrates through the valve cover 2, the other end of the movable iron core is positioned under the fixed iron core 3, an electromagnetic coil 5 is wound on the fixed iron core 3, and a valve core is further arranged in the valve body 1;
the valve core comprises two first sealing blocks 10 positioned in the main channel when the electromagnetic valve is in a closed state, and a locking mechanism and a lifting mechanism which firstly fold the two first sealing blocks 10 in the main channel under the installation channel 6 and then lift the two first sealing blocks into the installation channel 6 when the electromagnetic valve is opened, wherein the movable iron core 4 is connected with the lifting mechanism, and the telescopic end of the lifting mechanism is connected with the locking mechanism;
when the valve of solenoid valve is in the closed condition, two first sealed pieces 10 in the main entrance are located air inlet 7 and gas outlet 8 respectively, and when the valve of solenoid valve was opened to needs, solenoid 5 circular telegram back, produced the electromagnetic force between fixed iron core 3 and the movable iron core 4, movable iron core 4 drove elevating system and goes up and down to draw in two first sealed pieces 10 earlier through locking mechanism, accomodate in installation passageway 6 again.
As shown in fig. 1 and 2, in an embodiment of the present invention, the lifting mechanism includes a sliding rod 15, a second sleeve 16, and a second sealing block 17;
the second sealing block 17 is arranged in the mounting channel 6 in a sliding manner, one end of the sliding rod 15 is fixed on the lower end face of the second sealing block 17, the other end of the sliding rod is connected with the locking mechanism, the sliding rod 15 and the second sealing block 17 are both sleeved with the second sleeve 16 in a sliding manner, one end of the second sleeve 16 is fixed on the lower end face of the movable iron core 4, and the other end of the second sleeve is connected with the locking mechanism;
after the power is switched on, the second sleeve 16 moves up and down under the driving of the movable iron core 4, so that the sliding rod 15 and the second sealing block 17 are driven by the locking mechanism.
As shown in fig. 3, in an embodiment of the present invention, one end of the second sleeve 16 slidably sleeved with the sliding rod 15 is provided with a plurality of equally spaced guide blocks 21, and the second sealing block 17 is provided with a pair of through grooves 22 corresponding to the guide blocks 21;
by providing a plurality of equally spaced guide blocks 21 at one end of the second sleeve 16, the second sleeve 16 is slidably engaged with the slide rod 15 through a through slot 22 in the second seal block 17.
As shown in fig. 1 and 2, in an embodiment of the present invention, the locking mechanism includes a first spring 11, a telescopic rod 12, a connecting rod 13, and a first sleeve 14;
the two first sealing blocks 10 are both detachably provided with first sleeves 14, the first springs 11 are sleeved on the telescopic rods 12, one ends of the first springs are connected with the sliding rods 15, the other ends of the first springs are abutted to the outer walls of the first sleeves 14, one ends of the telescopic rods 12 are connected with the sliding rods 15, the other ends of the telescopic rods are sleeved with the opening ends of the first sleeves 14 in a sliding mode, one ends of the connecting rods 13 are hinged to the outer walls of the first sleeves 14, and the other ends of the connecting rods are connected with the telescopic ends of the second sleeves 16;
when the second sleeve 16 moves under the driving of the movable iron core 4, the first sleeve 14 is driven by the hinged connecting rod 13 to slide and sleeve at the telescopic end of the telescopic rod 12, so that the first spring 11 is extruded, and the first sealing block 10 in the air inlet 7 and the air outlet 8 is respectively folded towards the central axis of the installation channel 6.
As shown in fig. 1, in an embodiment of the present invention, the lifting mechanism further includes a pull rod 18, one end of the pull rod 18 is fixed on the upper end surface of the movable iron core 4, and the other end of the pull rod 18 sequentially passes through the fixed iron core 3 and the mounting cylinder 9 in a sliding manner and is fixed with a round handle;
the movable iron core 4 drives the second sleeve 16 to move and simultaneously drives the pull rod 18 to move upwards on the fixed iron core 3 and the mounting cylinder 9, so that the valve can be closed conveniently by pressing the pull rod 18 when the valve needs to be closed.
As shown in fig. 1, in an embodiment of the present invention, the locking mechanism further includes an installation seat 19 and a threaded rod 20, the installation seat 19 is sleeved on the pull rod 18 and fixed on the outer wall of the installation cylinder 9, a threaded through hole perpendicular to the pull rod 18 is formed in the installation seat 19, and a threaded end of the threaded rod 20 passes through the threaded through hole and is in sliding contact with the outer wall of the pull rod 18;
one end of the pull rod 18 extending out of the mounting cylinder 9 also movably penetrates through the mounting seat 19, a threaded through hole which is perpendicular to and communicated with the pull rod 18 is formed in the mounting seat 19, when the electromagnetic valve needs to be opened for a long time or the gas flow in the main channel needs to be adjusted, the position of the pull rod 18 is adjusted to fix the pull rod 18 through the threaded rod 20, and the valve can still be kept in an opening state after power failure.
As shown in fig. 4 and 5, in another embodiment of the present invention, the locking mechanism further includes a baffle 23, a partition 24, a magnet 25, a ball 26, a second spring 27, and a second through hole 28;
the baffle 23 is fixed in the installation channel 6 and positioned above the second sealing block 17, the partition plate 24 is fixed in the main channel and positioned right below the central shaft of the sliding rod 15, magnets 25 are respectively installed on the opposite surfaces of the two first sealing blocks 10, the two magnets 25 have different magnetism, the second through hole 28 is arranged on the sliding rod 15, the second spring 27 is positioned in the second through hole 28, one end of the second spring is connected with the inner wall of the sliding rod 15, the other end of the second spring is fixed with a ball 26, and the ball 26 is in sliding fit with sliding grooves 30 among the plurality of equally spaced guide blocks 21;
after the valve of the electromagnetic valve is opened and powered off, the two first sealing blocks 10 keep the valve in a closed state through the friction force between the first sealing blocks and the inner wall of the installation channel 6 and the elastic force of the first spring 11, when the valve needs to be closed, the short-time energization is carried out again, the movable iron core 4 drives the second sleeve 16 to move upwards, the second sealing block 17 prevents the sliding rod 15 from moving upwards along with the second sleeve 16 under the action of the baffle 23, the second sleeve 16 compresses the ball 26 under the action of the pulling force of the movable iron core 4, the second sleeve 16 moves upwards and the second sealing block 17 and the sliding rod 15 do not move, at the moment, the two first sealing blocks 10 respectively continue to approach to the two magnets 25 which are mutually attracted under the action of the connecting rod 13 through the first sleeve 14 to generate magnetic force to be adsorbed together, after the power off, the first sealing blocks 10 are separated from the inner wall of the installation channel 6 and fall into the main channel under the action of the gravity of the first sealing blocks, the two magnets 25 are separated by the diaphragm 24 and the elastic force of the first spring 11, and the two first seal blocks 10 are restored.
As shown in fig. 1 and 5, in an embodiment of the present invention, the electromagnetic valve further includes a third spring 29, the third spring 29 is sleeved on the second sleeve 16, one end of the third spring 29 is connected to the valve cap 2, and the other end of the third spring is connected to the upper end surface of the second sealing block 17;
when the valve is closed, the falling speed of the two first sealing blocks 10 is accelerated by the elastic force of the third spring 29, and the situation that when the two first sealing blocks 10 are not far away from the installation channel 6, the two magnets 25 are separated under the action of the first spring 11, so that the first sealing blocks 10 and the inner wall of the installation channel 6 generate friction force again is avoided.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. But all changes which come within the scope of the invention are intended to be embraced therein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Claims (5)
1. A high-sealing gas electromagnetic valve is characterized by comprising a valve body (1), a valve cover (2), a fixed iron core (3), a movable iron core (4), an electromagnetic coil (5) and a valve core;
the valve body (1) comprises a main channel and an installation channel (6) which is vertical and communicated with the main channel, two opposite openings of the main channel are respectively an air inlet (7) and an air outlet (8), the valve cover (2) is hermetically connected with the installation channel (6), an installation cylinder (9) is fixed on the valve cover (2), a fixed iron core (3) is arranged in the installation cylinder (9), one end of the movable iron core (4) movably penetrates through the valve cover (2), the other end of the movable iron core is positioned right below the fixed iron core (3), an electromagnetic coil (5) is further wound on the fixed iron core (3), and a valve core is further arranged in the valve body (1);
the valve core comprises two first sealing blocks (10) which are positioned in the main channel when the electromagnetic valve is in a closed state, and a locking mechanism and a lifting mechanism which firstly draw the two first sealing blocks (10) in the main channel under the installation channel (6) and then lift the two first sealing blocks into the installation channel (6) when the electromagnetic valve is opened, wherein the movable iron core (4) is connected with the lifting mechanism, and the telescopic end of the lifting mechanism is connected with the locking mechanism;
the lifting mechanism comprises a sliding rod (15), a second sleeve (16) and a second sealing block (17);
the second sealing block (17) is arranged in the mounting channel (6) in a sliding mode, one end of the sliding rod (15) is fixed to the lower end face of the second sealing block (17), the other end of the sliding rod is connected with the locking mechanism, the sliding rod (15) and the second sealing block (17) are sleeved with the second sleeve (16) in a sliding mode, one end of the second sleeve (16) is fixed to the lower end face of the movable iron core (4), and the other end of the second sleeve (16) is connected with the locking mechanism;
one end of the second sleeve (16) which is sleeved with the sliding rod (15) in a sliding way is provided with a plurality of guide blocks (21) at equal intervals, and the second sealing block (17) is provided with a plurality of through grooves (22) corresponding to the guide blocks (21);
the locking mechanism comprises a first spring (11), an expansion rod (12), a connecting rod (13) and a first sleeve (14);
equal detachable installs first sleeve (14) on two first sealed pieces (10), first spring (11) cover is established on telescopic link (12), first spring (11) one end is connected with slide bar (15), the other end and first sleeve (14) outer wall butt, telescopic link (12) one end is connected with slide bar (15), and the other end slides the registrate with the open end of first sleeve (14), connecting rod (13) one end is articulated with first sleeve (14) outer wall, and the other end is connected with the flexible end of second sleeve (16).
2. The high-tightness gas electromagnetic valve according to claim 1, wherein the lifting mechanism further comprises a pull rod (18), one end of the pull rod (18) is fixed on the upper end face of the movable iron core (4), and the other end of the pull rod (18) sequentially passes through the fixed iron core (3) and the mounting cylinder (9) in a sliding manner and is fixed with a round handle.
3. The high-tightness gas electromagnetic valve according to claim 2, wherein the locking mechanism further comprises a mounting seat (19) and a threaded rod (20), the mounting seat (19) is sleeved on the pull rod (18) and fixed on the outer wall of the mounting cylinder (9), a threaded through hole perpendicular to the pull rod (18) is formed in the mounting seat (19), and a threaded end of the threaded rod (20) penetrates through the threaded through hole to be in sliding contact with the outer wall of the pull rod (18).
4. The high-sealing gas electromagnetic valve according to claim 1, wherein the locking mechanism further comprises a baffle plate (23), a partition plate (24), a magnet (25), a ball (26), a second spring (27) and a second through hole (28);
baffle (23) are fixed and are located second seal block (17) top in installation passageway (6), baffle (24) are fixed and are located slide bar (15) center pin in the main entrance under, two all install magnet (25), two on the opposite face of first seal block (10) the magnetism of magnet (25) is different, second through-hole (28) set up on slide bar (15), second spring (27) are located second through-hole (28), and slide bar (15) inner wall is connected to one end, and the other end is fixed with ball (26), ball (26) and spout (30) sliding fit between a plurality of equidistant guide block (21).
5. The high-tightness gas electromagnetic valve according to claim 3 or 4, characterized in that the electromagnetic valve further comprises a third spring (29), the third spring (29) is sleeved on the second sleeve (16), one end of the third spring (29) is connected with the valve cover (2), and the other end is connected with the upper end face of the second sealing block (17).
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| CN112855990B (en) * | 2020-12-31 | 2022-09-30 | 重庆磐恒阀门有限公司 | Spherical self-cleaning gas cut-off valve |
| CN112682562B (en) * | 2020-12-31 | 2022-09-30 | 重庆磐恒阀门有限公司 | Gas pressure control gas cut-off valve |
| CN116576256B (en) * | 2023-05-31 | 2023-10-31 | 上海华维可控农业科技集团股份有限公司 | Hydraulic control electromagnetic valve with low head loss |
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