CN111734876B - Pilot-operated high-pressure electromagnetic valve - Google Patents
Pilot-operated high-pressure electromagnetic valve Download PDFInfo
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- CN111734876B CN111734876B CN202010835203.8A CN202010835203A CN111734876B CN 111734876 B CN111734876 B CN 111734876B CN 202010835203 A CN202010835203 A CN 202010835203A CN 111734876 B CN111734876 B CN 111734876B
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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
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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
- 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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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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
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention discloses a pilot-operated high-pressure electromagnetic valve, which comprises an electromagnetic head, a plastic upper cover and a valve body which are sequentially connected from top to bottom, wherein electromagnetic conduction mechanisms are arranged inside the electromagnetic head and the plastic upper cover and are used for realizing the conduction and the closing of the pilot-operated high-pressure electromagnetic valve; the electromagnetic conduction mechanism comprises a high-pressure piston cap which is slidably arranged in the plastic upper cover; the high-pressure electromagnetic valve is characterized in that a plastic piston is arranged in the valve body, the plastic piston can move in the valve body, a first through groove is formed in the plastic piston, the high-pressure piston cap is connected with the first through groove in a matched mode, a limiting block is arranged on the outer wall of the high-pressure piston cap, a limiting table is arranged at the top of the first through groove, and when the pilot type high-pressure electromagnetic valve is in a closed state, the limiting block is abutted to the limiting table; the pilot-operated high-pressure electromagnetic valve provided by the invention has the advantages of high reaction speed, good sealing effect in a closed state and difficulty in occurrence of a blocking phenomenon.
Description
Technical Field
The invention relates to the technical field of electromagnetic valves, in particular to a pilot-operated high-pressure electromagnetic valve.
Background
The pilot-operated electromagnetic valve comprises a pilot valve and a main valve, wherein the pilot valve and the main valve are communicated through a channel, when the coil of the electromagnetic valve is electrified, the movable iron core and the static iron core are attracted to open a pilot valve hole, the pilot valve generates upward thrust due to the fact that the external water inflow of the pilot valve is smaller than the internal drainage, and the pilot valve floats upwards; because of the opening of the pilot valve, the valve core of the main valve is smaller than the internal drainage because of its external water inflow and causes the pressure difference to produce the thrust upwards, the valve core of the main valve floats upwards, namely the valve core of the main valve breaks away from the main valve port, the main valve opens, the medium flows from the inlet to the outlet; when the electromagnetic valve coil is powered off, the movable iron core is separated from the static iron core, the pressure relief hole of the pilot valve is closed firstly under the action of the elastic force of the spring, then the pressure relief hole of the valve core of the main valve is closed, at the moment, the valve core of the main valve is pressed down towards the opening of the main valve due to unequal pressure difference between the upper part and the lower part of the main valve, so that the opening of the main valve is sealed, and a medium is blocked.
The existing pilot-operated electromagnetic valve has the following defects:
(1) the piston and the upper cover of the valve body are generally made of stainless steel, and the reaction time of the pilot-operated electromagnetic valve is prolonged due to the large dead weight of the piston; when sand and other substances exist in water, the upper cover of the stainless steel valve body and the stainless steel piston are contacted easily to cause the phenomenon of blocking, so that the use effect and the service life of the pilot electromagnetic valve are influenced;
(2) the problem that the coaxiality of the internal axial matching piece is not enough exists, so that the pressing surface cannot tightly press the medium inlet, and the medium is leaked due to the fact that the sealing of the pilot electromagnetic valve is not enough.
(3) When gravel and other substances exist in water, the piston cap and the piston are stuck, so that the use effect of the pilot electromagnetic valve is influenced; in severe cases, the pilot-operated solenoid valve cannot be turned on.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide the pilot-operated high-pressure electromagnetic valve, which adopts the plastic upper cover and the plastic piston, shortens the reaction time of the pilot-operated high-pressure electromagnetic valve, and reduces the probability of the clamping phenomenon between the valve body upper cover and the piston; the cooperation of stopper and spacing platform ensures the sealed degree when leading formula high pressure solenoid valve closes, reduces the probability of the dead phenomenon of card appearing between plastic piston and the high pressure piston cap.
In order to achieve the purpose, the invention adopts the following technical scheme:
a pilot-operated high-pressure electromagnetic valve comprises an electromagnetic head, a plastic upper cover, an electromagnetic conduction mechanism, a plastic piston and a valve body, wherein the electromagnetic head, the plastic upper cover and the valve body are sequentially connected from top to bottom; the electromagnetic conduction mechanism is arranged in the electromagnetic head and the plastic upper cover and is used for realizing the conduction and the closing of the pilot high-voltage electromagnetic valve; the electromagnetic conduction mechanism comprises a high-pressure piston cap which is slidably arranged in the plastic upper cover; the plastic piston is slidably arranged in the valve body, a first through groove is formed in the plastic piston, the high-pressure piston cap is connected with the first through groove in a matched mode, a limiting block is arranged on the outer wall of the high-pressure piston cap, a limiting table is arranged at the top of the first through groove, and when the guide type high-pressure electromagnetic valve is in a closed state, the limiting block is abutted to the limiting table.
In the pilot-operated high-pressure electromagnetic valve, the electromagnetic conduction mechanism further comprises a high-pressure electromagnetic head, a coil iron core, a spring and a high-pressure connecting rod, the coil iron core is slidably arranged in the high-pressure electromagnetic head, the high-pressure connecting rod is arranged at the bottom of the coil iron core, the high-pressure connecting rod is elastically connected with the high-pressure electromagnetic head through the spring, and the high-pressure piston cap is arranged at the bottom of the high-pressure connecting rod.
In the pilot type high-pressure electromagnetic valve, a plurality of first guide plate groups are uniformly arranged at the top of the plastic piston, one first guide plate group comprises two first guide plates, a first guide groove is formed between the two first guide plates, and a plurality of guide strips are arranged at the bottom of the inner side of the plastic upper cover and can slide in the first guide groove.
In the pilot type high-pressure electromagnetic valve, the top of the plastic piston is also provided with a plurality of second guide plate groups, the second guide plate groups are arranged between the adjacent first guide plate groups, each second guide plate group comprises two second guide plates, a second guide groove is formed between the two second guide plates, and the guide strip can slide in the second guide groove.
In the pilot-operated high-pressure solenoid valve, the first guide piece includes a first horizontal portion and a first vertical portion, and the guide bar includes a second horizontal portion and a second vertical portion.
In the pilot-operated high-pressure electromagnetic valve, a first thread part is arranged at the bottom of the outer wall of the plastic upper cover, a second thread part is arranged at the top of the inner wall of the valve body, and the plastic upper cover is detachably connected with the valve body through the matching connection of the first thread part and the second thread part.
The pilot-operated high-pressure electromagnetic valve further comprises a second sealing ring, and the second sealing ring is arranged at the top of the first thread part.
The pilot-operated high-pressure electromagnetic valve further comprises a pressing piece and a first sealing ring, wherein the pressing piece is arranged at the bottom of the plastic piston, and the first sealing ring is arranged between the pressing piece and the plastic piston.
The pilot-operated high-pressure electromagnetic valve further comprises a first travel switch for realizing on-off of the pilot-operated high-pressure electromagnetic valve and a second travel switch for realizing linkage of the pilot-operated high-pressure electromagnetic valve and an external mechanism, and the first travel switch and the second travel switch are respectively and electrically connected with an external controller.
In the pilot-operated high-pressure electromagnetic valve, a medium inflow channel and a medium outflow channel which are communicated are arranged in the valve body, and the medium outflow channel is provided with a spherical flow guide surface.
Has the advantages that:
the invention provides a pilot-operated high-pressure electromagnetic valve, which has the following advantages:
(1) compared with the existing stainless steel piston, the plastic piston has smaller weight, can shorten the reaction time of the pilot-operated high-pressure electromagnetic valve and improve the use effect of the pilot-operated high-pressure electromagnetic valve;
(2) the surfaces of the plastic piston and the plastic upper cover are not easy to scale, so that the frequency of jamming when the piston is contacted with the valve body upper cover is greatly reduced;
(3) when the pilot-operated high-pressure electromagnetic valve is closed, the limiting block is abutted against the limiting table, so that the integral sealing reliability of the pilot-operated high-pressure electromagnetic valve in a closed state is ensured, and the probability of the clamping phenomenon between the plastic piston and the high-pressure piston cap can be reduced;
(4) the plastic piston is provided with a first guide piece group and a second guide piece group, the plastic upper cover is provided with a guide strip, and the guide strip is respectively matched with the first guide piece group and the second guide piece group, so that the axial coaxiality of the plastic piston during movement is ensured, and the axial sealing performance of the pilot-operated high-pressure electromagnetic valve is improved.
Drawings
FIG. 1 is an exploded view of a pilot operated high pressure solenoid valve provided in accordance with the present invention;
FIG. 2 is a cross-sectional view of a pilot operated high pressure solenoid valve provided in accordance with the present invention;
FIG. 3 is an enlarged view of portion A provided by the present invention;
FIG. 4 is a schematic structural diagram of an electromagnetic conduction mechanism, a plastic upper cover, a plastic piston, a pressing member and a first sealing ring provided by the present invention;
FIG. 5 is a schematic structural view of a plastic piston provided in the present invention;
fig. 6 is a schematic structural view of the plastic upper cover provided by the present invention.
Description of the main element symbols: 1-an electromagnetic head, 2-a plastic upper cover, 21-a guide strip, 211-a second horizontal part, 212-a second vertical part, 22-a first threaded part, 23-a second sealing ring, 3-an electromagnetic conduction mechanism, 31-a high-voltage electromagnetic head, 32-a coil iron core, 33-a spring, 34-a high-voltage connecting rod, 341-a third sealing ring and 35-a high-voltage piston cap, 351-limiting block, 4-plastic piston, 41-first guide sheet, 411-first horizontal part, 412-first vertical part, 42-second guide sheet, 43-limiting table, 5-valve body, 51-second thread part, 52-medium inflow channel, 53-medium outflow channel, 6-pressing piece, 7-first sealing ring and 81-first travel switch.
Detailed Description
The invention provides a pilot-operated high-pressure electromagnetic valve, which is further described in detail below by referring to the attached drawings and embodiments in order to make the purpose, technical scheme and effect of the invention clearer and clearer.
In the description of the present invention, it is to be understood that the terms "top", "bottom", "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, which are merely for convenience of description and simplification of description, and are not to be construed as limitations of the present invention; in addition, the terms "mounted," "connected," and the like are to be construed broadly, and those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
Referring to fig. 1 to 3, the invention provides a pilot-operated high-pressure solenoid valve, which comprises an electromagnetic head 1, a plastic upper cover 2, an electromagnetic conduction mechanism 3, a plastic piston 4 and a valve body 5, wherein the electromagnetic head 1, the plastic upper cover 2 and the valve body 5 are sequentially connected from top to bottom; the electromagnetic conduction mechanism 3 is arranged inside the electromagnetic head 1 and the plastic upper cover 2, and the electromagnetic conduction mechanism 3 is used for realizing the conduction and the closing of a pilot-operated high-voltage electromagnetic valve; the electromagnetic conduction mechanism 3 comprises a high-pressure piston cap 35, and the high-pressure piston cap 35 is slidably arranged in the plastic upper cover 2; the plastic piston 4 is slidably disposed in the valve body 5, a first through groove is formed in the plastic piston 4, the high-pressure piston cap 35 is connected with the first through groove in a matched manner, a limit block 351 is disposed on the outer wall of the high-pressure piston cap 35, a limit table 43 is disposed at the top of the first through groove, and when the pilot high-pressure solenoid valve is in a closed state, the limit block 351 is abutted to the limit table 43.
In the prior art, generally, a sealing ring is arranged at the bottom of a high-pressure piston cap, and the high-pressure piston cap and the sealing ring are abutted against the inner wall of a piston to close and seal a pilot-operated high-pressure electromagnetic valve; this application adopts the mode of spacing platform 43 and stopper 351 butt, because spacing platform 43 is higher than the upper surface in first logical groove, stopper 351 is outwards salient along the outer wall of high-pressure piston cap 35, and there is not the grit on spacing platform 43 and stopper 351 surface to remain, can improve the reaction time of guide's formula high pressure solenoid valve to greatly reduced guide's formula high pressure solenoid valve appears the probability of the dead phenomenon of card.
In addition, in the application, the plastic piston 4 is made of plastic, and compared with the existing stainless steel piston, the plastic piston 4 has the advantage of light weight, so that the reaction time of the pilot type high-pressure electromagnetic valve can be shortened, and the using effect of the pilot type high-pressure electromagnetic valve is improved; in addition, compare with stainless steel's piston and upper cover, the difficult grit that accumulates and difficult scale deposit in plastics piston 4 and the 2 surfaces of plastics upper cover, the probability of the dead phenomenon of card appears when greatly reduced piston and upper cover contact, has prolonged the life of guide's formula high pressure solenoid valve.
Further, referring to fig. 1, fig. 2 and fig. 4, the electromagnetic conduction mechanism 3 further includes a high-voltage electromagnetic head 31, a coil core 32, a spring 33 and a high-voltage connection rod 34, the coil core 32 is slidably disposed in the high-voltage electromagnetic head 31, the high-voltage connection rod 34 is disposed at the bottom of the coil core 32, the high-voltage connection rod 34 is elastically connected to the high-voltage electromagnetic head 31 through the spring 33, and the high-voltage piston cap 35 is disposed at the bottom of the high-voltage connection rod 34; the specific connection mode and the working principle of the electromagnetic head 1, the high-voltage electromagnetic head 31, the coil iron core 32, the high-voltage connecting rod 34 and the high-voltage piston cap 35 can refer to a pilot-operated electromagnetic valve in the prior art, and are not described herein again.
Further, referring to fig. 3, the pilot-operated high-pressure solenoid valve further includes a third sealing ring 341, and the third sealing ring 341 is disposed at the bottom of the high-pressure connecting rod 34; the third seal ring 341 is provided to improve the tightness of the connection between the high-pressure connecting rod 34 and the high-pressure piston cap 35, i.e., to improve the sealing effect when the pilot-operated high-pressure solenoid valve is in the closed state, thereby preventing the leakage of the medium.
Further, referring to fig. 2, fig. 5 and fig. 6, a plurality of first guide plate sets are uniformly arranged at the top of the plastic piston 4, each first guide plate set includes two first guide plates 41, a first guide groove is formed between the two first guide plates 41, a plurality of guide bars 21 are arranged at the bottom of the inner side of the plastic upper cover 2, and the guide bars 21 can slide in the first guide grooves; a medium inflow channel 52 and a medium outflow channel 53 for realizing the outflow and inflow of the medium are arranged in the valve body 5, and the medium inflow channel 52 is communicated with the medium outflow channel 53; when the plastic piston 4 moves in the medium outflow channel 53, the first guide plate group is matched with the guide groove, so that the axial coaxiality of the plastic piston 4 in the up-and-down movement is ensured, and the axial sealing performance of the pilot high-pressure electromagnetic valve is improved.
Further, referring to fig. 5 and 6, a plurality of second guide plate groups are further arranged at the top of the plastic piston 4, the second guide plate groups are arranged between adjacent first guide plate groups, each second guide plate group includes two second guide plates 42, a second guide groove is formed between the two second guide plates 42, and the guide strip 21 can slide in the second guide groove; the second guide plate group is matched with the guide strip 21, so that the axial coaxiality of the plastic piston 4 in the up-and-down motion process is further improved.
Further, referring to fig. 5 and 6, the first guide piece 41 includes a first horizontal portion 411 and a first vertical portion 412, and the guide bar 21 includes a second horizontal portion 211 and a second vertical portion 212; the first horizontal portion 411 is matched with the second horizontal portion 211, and the first vertical portion 412 is matched with the second vertical portion 212, so that when the plastic piston 4 moves up and down, the axial coaxiality of the pilot-operated high-pressure solenoid valve is ensured, and the axial sealing performance of the pilot-operated high-pressure solenoid valve is improved.
Further, referring to fig. 1 and 2, a first threaded portion 22 is disposed at the bottom of the outer wall of the plastic upper cover 2, a second threaded portion 51 is disposed at the top of the inner wall of the valve body 5, and the plastic upper cover 2 and the valve body 5 are detachably connected through the matching connection of the first threaded portion 22 and the second threaded portion 51; the internal parts damaged by maintenance or replacement of the pilot type high-pressure solenoid valve are convenient.
Further, referring to fig. 1 and fig. 2, the pilot-operated high-pressure solenoid valve further includes a second sealing ring 23, and the second sealing ring 23 is disposed on the top of the first threaded portion 22; the second sealing ring 23 is arranged, so that the sealing degree between the plastic upper cover 2 and the valve body 5 can be improved, and the medium is prevented from leaking.
Further, referring to fig. 1 and 4, the pilot-operated high-pressure solenoid valve further includes a pressing member 6 and a first sealing ring 7, the pressing member 6 is disposed at the bottom of the plastic piston 4, and the first sealing ring 7 is disposed between the pressing member 6 and the plastic piston 4; the first sealing ring 7 and the pressing piece 6 are arranged, when the pilot type high-pressure electromagnetic valve is in a closed state, the sealing degree between the plastic piston 4 and the valve body 5 is improved, and the medium is prevented from leaking.
In one embodiment, referring to fig. 2 and 4, the bottom of the plastic piston 4 is opened with a second through groove for accommodating the first sealing ring 7, the outer diameter of the pressing member 6 is smaller than the outer diameter of the first sealing ring 7, and when the pilot type high-pressure solenoid valve is closed, the first sealing ring 7 abuts against the inner wall of the valve body 5.
Further, referring to fig. 2, the pilot-operated high-pressure solenoid valve further includes a first travel switch 81 for implementing on/off of the pilot-operated high-pressure solenoid valve and a second travel switch for implementing linkage of the pilot-operated high-pressure solenoid valve and an external mechanism, and the first travel switch 81 and the second travel switch are respectively electrically connected to an external controller.
When the pilot-operated high-voltage electromagnetic valve is in a working state, the first travel switch 81 is in a normally open state, the second travel switch is in a normally closed state, the pilot-operated high-voltage electromagnetic valve is electrified, the high-voltage electromagnetic head 31 is electrified and attracted to drive the coil iron core 32 to move upwards, at the moment, the high-voltage electromagnetic head 31 is in a high-power state, and when the coil iron core 32 is in contact with a switch plectrum of the first travel switch 81, the first travel switch 81 is disconnected to cut off one group of coils, so that the service power of the high-voltage electromagnetic head 31 is reduced, the electromagnetic conduction mechanism 3 is prevented from heating due to long-time electrification, and the service life of the pilot-operated high; when the first travel switch 81 is switched off, a switching-off signal is fed back to the external controller, the external controller controls the second travel switch to be switched from a normally-closed state to a normally-open state, and the output signal of the second travel switch is linked with other external mechanisms; the external mechanism can be an external other control device, the external other control device can comprise a PLC (programmable logic controller) or a single chip microcomputer, and the external other control device receives the output signal of the second travel switch and executes other actions according to the output signal of the second travel switch; and the output signal of the second travel switch is used for feeding back the switch state of the pilot-operated high-pressure electromagnetic valve, and the signal output by the second travel switch is a passive signal.
Further, referring to fig. 2, the medium outflow channel 53 has a spherical flow guiding surface, and the design of the spherical flow guiding surface can reduce the flow resistance of the medium during outflow, thereby increasing the flow speed of the medium; in addition, compared with a straight pipe type valve body, the spherical flow guide surface is adopted, the impact force of a medium on the valve body 5 is smaller, and the service life of the valve body 5 can be prolonged.
The operating principle of the pilot-operated high-pressure electromagnetic valve provided by the invention is as follows:
when the pilot type high-pressure electromagnetic valve works, the high-pressure electromagnetic head 31 is electrified and attracted, the high-pressure electromagnetic head 31 drives the high-pressure connecting rod 34 to move upwards along the axial direction, a pilot hole is formed in the high-pressure piston cap 35, and when the electromagnetic valve is in a closed state, the high-pressure connecting rod 34 is connected with the pilot hole in a matched mode; because the external water inlet amount is smaller than the water outlet amount of the pilot hole, the pressure on the outer side of the high-pressure piston cap 35 is larger than the pressure on the inner side, and the high-pressure piston cap 35 moves upwards, so that an overflow port in the middle of the plastic piston 4 is opened, namely, the high-pressure piston cap 35 is separated from the first through groove; the water inlet amount of the gap between the plastic piston 4 and the plastic upper cover 2 is smaller than the water outlet amount of the middle part of the plastic piston 4, so that pressure difference is formed, the plastic piston 4 is pushed by water power to move upwards, the opening of the water outlet of the valve body 5 is realized, and the medium flows out from the medium outflow channel in the valve body 5; when the electromagnetic coil is powered off, the high-pressure connecting rod 34 is reset due to the thrust of the spring 33, the high-pressure connecting rod 34 blocks the pilot hole on the high-pressure piston cap 35 and pushes the high-pressure piston cap 35 to move downwards at the same time until the limiting block 351 on the high-pressure piston cap 35 is contacted with the limiting table 43 on the plastic piston 4, and sealing is realized; when the overflow mouth is closed, namely after high-pressure piston cap 35 is connected with first logical groove, first sealing washer 7 laminating valve body 5's delivery port realizes closing of valve body 5's delivery port.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (10)
1. A pilot-operated high-pressure electromagnetic valve is characterized by comprising an electromagnetic head, a plastic upper cover, an electromagnetic conduction mechanism, a plastic piston and a valve body, wherein the electromagnetic head, the plastic upper cover and the valve body are sequentially connected from top to bottom; the electromagnetic conduction mechanism is arranged in the electromagnetic head and the plastic upper cover and is used for realizing the conduction and the closing of the pilot high-voltage electromagnetic valve; the electromagnetic conduction mechanism comprises a high-pressure piston cap which is slidably arranged in the plastic upper cover; the plastic piston is slidably arranged in the valve body, a first through groove is formed in the plastic piston, the high-pressure piston cap is connected with the first through groove in a matched mode, a limiting block is arranged on the outer wall of the high-pressure piston cap, a limiting table is arranged at the top of the first through groove, and when the guide type high-pressure electromagnetic valve is in a closed state, the limiting block is abutted to the limiting table.
2. The pilot-operated high-pressure electromagnetic valve according to claim 1, wherein the electromagnetic conduction mechanism further comprises a high-pressure electromagnetic head, a coil core, a spring and a high-pressure connecting rod, the coil core is slidably disposed in the high-pressure electromagnetic head, the high-pressure connecting rod is disposed at the bottom of the coil core, the high-pressure connecting rod is elastically connected to the high-pressure electromagnetic head through the spring, and the high-pressure piston cap is disposed at the bottom of the high-pressure connecting rod.
3. The pilot-operated high-pressure electromagnetic valve according to claim 1, wherein the top of the plastic piston is uniformly provided with a plurality of first guide vane groups, each first guide vane group comprises two first guide vanes, a first guide groove is formed between the two first guide vanes, and the inner bottom of the plastic upper cover is provided with a plurality of guide bars which can slide in the first guide grooves.
4. The pilot-operated high-pressure electromagnetic valve according to claim 3, wherein the top of the plastic piston is further provided with a plurality of second guide plate groups, the second guide plate groups are arranged between adjacent first guide plate groups, each second guide plate group comprises two second guide plates, a second guide groove is formed between the two second guide plates, and the guide strip can slide in the second guide groove.
5. The pilot-operated high-pressure solenoid valve according to claim 3, wherein said first guide piece comprises a first horizontal portion and a first vertical portion, and said guide bar comprises a second horizontal portion and a second vertical portion.
6. The pilot-operated high-pressure electromagnetic valve according to claim 1, wherein the bottom of the outer wall of the plastic upper cover is provided with a first threaded portion, the top of the inner wall of the valve body is provided with a second threaded portion, and the detachable connection between the plastic upper cover and the valve body is realized through the matching connection of the first threaded portion and the second threaded portion.
7. The pilot-operated high-pressure solenoid valve according to claim 6, further comprising a second seal ring disposed on top of the first threaded portion.
8. The pilot-operated high-pressure solenoid valve according to claim 1, further comprising a pressing member provided at a bottom of the plastic piston, and a first seal ring provided between the pressing member and the plastic piston.
9. The pilot-operated high-pressure electromagnetic valve according to claim 1, further comprising a first travel switch for switching on and off the pilot-operated high-pressure electromagnetic valve and a second travel switch for linking the pilot-operated high-pressure electromagnetic valve with an external mechanism, wherein the first travel switch and the second travel switch are respectively electrically connected with an external controller.
10. The pilot-operated high-pressure solenoid valve according to claim 1, wherein a medium inflow passage and a medium outflow passage communicating with each other are provided in the valve body, and the medium outflow passage has a spherical flow guide surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010835203.8A CN111734876B (en) | 2020-08-19 | 2020-08-19 | Pilot-operated high-pressure electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010835203.8A CN111734876B (en) | 2020-08-19 | 2020-08-19 | Pilot-operated high-pressure electromagnetic valve |
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| Publication Number | Publication Date |
|---|---|
| CN111734876A CN111734876A (en) | 2020-10-02 |
| CN111734876B true CN111734876B (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010835203.8A Active CN111734876B (en) | 2020-08-19 | 2020-08-19 | Pilot-operated high-pressure electromagnetic valve |
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| CN (1) | CN111734876B (en) |
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| CN205877230U (en) * | 2016-08-11 | 2017-01-11 | 大连世安科技股份有限公司 | Spool of magnetic valve |
| CN106594362A (en) * | 2016-12-22 | 2017-04-26 | 上海巨良电磁阀制造有限公司 | Pilot type fire-fighting electromagnetic valve |
| CN107956911A (en) * | 2016-10-14 | 2018-04-24 | 杭州三花研究院有限公司 | A kind of solenoid valve |
| CN207364293U (en) * | 2017-10-30 | 2018-05-15 | 浙江创享阀门科技有限公司 | The shut-off valve of dual-seal |
| CN207539421U (en) * | 2017-10-10 | 2018-06-26 | 广东三方利精密技术有限公司 | A kind of guide electromagnetic valve |
| CN208442289U (en) * | 2018-06-22 | 2019-01-29 | 方正阀门集团永嘉科技有限公司 | A kind of leakproofness is strong and the shut-off valve of high reliablity |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6218024B2 (en) * | 2013-09-25 | 2017-10-25 | 株式会社テージーケー | solenoid valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205877230U (en) * | 2016-08-11 | 2017-01-11 | 大连世安科技股份有限公司 | Spool of magnetic valve |
| CN107956911A (en) * | 2016-10-14 | 2018-04-24 | 杭州三花研究院有限公司 | A kind of solenoid valve |
| CN106594362A (en) * | 2016-12-22 | 2017-04-26 | 上海巨良电磁阀制造有限公司 | Pilot type fire-fighting electromagnetic valve |
| CN207539421U (en) * | 2017-10-10 | 2018-06-26 | 广东三方利精密技术有限公司 | A kind of guide electromagnetic valve |
| CN207364293U (en) * | 2017-10-30 | 2018-05-15 | 浙江创享阀门科技有限公司 | The shut-off valve of dual-seal |
| CN208442289U (en) * | 2018-06-22 | 2019-01-29 | 方正阀门集团永嘉科技有限公司 | A kind of leakproofness is strong and the shut-off valve of high reliablity |
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| CN111734876A (en) | 2020-10-02 |
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