CN216895898U

CN216895898U - Rocker arm type three-way diaphragm electromagnetic valve

Info

Publication number: CN216895898U
Application number: CN202123089429.7U
Authority: CN
Inventors: 邱宇; 肖晟; 林世起
Original assignee: Pudun Fluid Technology Shenzhen Co ltd
Current assignee: Pudun Fluid Technology Shenzhen Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-07-05
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses a rocker arm type three-way diaphragm solenoid valve which is used for controlling a normally open port and a normally closed port to be respectively opened and closed to communicate with a public port and comprises a valve body, wherein one end of the valve body is connected with a valve cover, a rotatable diaphragm is arranged between the valve body and the valve cover, a sliding block is arranged in a cavity of the valve body in a sliding manner, the end part of the sliding block corresponds to the diaphragm, one side of the sliding block is fixed, and the other side of the sliding block is in elastic contact with the diaphragm; the valve comprises a valve seat, one end of the valve seat is connected with a valve body, one end of a moving iron in the valve seat is connected with a sliding block, the other end of the moving iron extends into an iron shell, a first spring is arranged between the moving iron and the iron shell, a coil framework is arranged in the iron shell, a static iron is arranged in the coil framework, the static iron and the moving iron are coaxially and oppositely arranged, and a coil is wound outside the coil framework and is electrified. The device enables two sides of the diaphragm to stably lift through the fixed pressure heads and the elastic normally-open pressure heads on two sides of the sliding block, the air exhaust groove is formed in the sliding block, the piston effect is eliminated, and the valve body action part and the electromagnet part are designed to be in non-fastening connection and are independent respectively.

Description

Rocker arm type three-way diaphragm electromagnetic valve

Technical Field

The utility model relates to the technical field of improved design of rocker arm type three-way solenoid valves, in particular to a rocker arm type three-way diaphragm solenoid valve.

Background

In the prior art, compared with a direct-acting solenoid valve, a diaphragm solenoid valve of a rocker arm type has no change in the inner volume of a valve body under two conditions of on-off operation, so that a liquid path of a system cannot generate a pumping effect, and if a terminal of the liquid path is a small-path needle requiring accurate quantification, redundant fluid output cannot be generated in the switching process of on-off of the solenoid valve.

However, diaphragm solenoid valves of the rocker arm type are more complicated in structure than direct-acting solenoid valves; the operation of the spool may be subject to more interference; the accumulated error has a greater impact on the performance of the product due to the greater number of parts involved in the execution. The prior art has the following defects: the existing environment-friendly rocker arm electromagnetic valve can be separated from a framework when being soaked in a strong corrosive reagent (98% concentrated sulfuric acid) for a long time, and the diaphragm does not act when the electromagnetic valve works, so that the electromagnetic valve fails; when the existing environment-friendly rocker arm electromagnetic valve is switched on and off, the volumes of the spaces at two ends of the movement of the sliding block change to generate a piston effect, so that the action of the electromagnetic valve is subjected to resistance added by the piston effect; the existing environment-friendly rocker arm electromagnetic valve has a large number of parts participating in actions in the on-off process and large accumulated error; the electromagnet shell adopts an assembling mode, and the error is large.

Therefore, a rocker arm type three-way diaphragm solenoid valve is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art, and provides a rocker arm type three-way diaphragm solenoid valve which enables two sides of a diaphragm to stably lift through a fixed pressure head and an elastic normally open pressure head on two sides of a sliding block, eliminates the piston effect by arranging an exhaust groove on the sliding block, designs a valve body action part and an electromagnet part to be in non-fastening connection, and ensures that the diaphragm has reliable sealing property when opened and closed.

In order to achieve the purpose, the utility model adopts the following technical scheme: a rocker arm type three-way diaphragm electromagnetic valve is used for controlling a normally-open port and a normally-closed port to be respectively opened and closed and communicated with a public port and comprises a valve body, wherein one end of the valve body is connected with a valve cover, a rotatable diaphragm is arranged between the valve body and the valve cover, a sliding block is arranged in a cavity of the valve body in a sliding mode, the end part of the sliding block corresponds to the diaphragm, one side of the sliding block is fixed, and the other side of the sliding block is in elastic contact with the diaphragm;

the valve seat, valve seat one end connect the valve body, the slider is connected to the moving iron one end in the valve seat, the moving iron other end stretches into in the iron-clad, is equipped with first spring between moving iron and the iron-clad, is equipped with the coil skeleton in the iron-clad, is equipped with the static iron in the coil skeleton, the static iron sets up with moving the coaxial relative of iron, the outer winding coil of coil skeleton and circular telegram.

The valve body is connected with the middle part of the diaphragm through the pin, and the diaphragm rotates around the pin and opens or closes the normally open port or the normally closed port.

The common port is opposite to the center of the diaphragm and a space is reserved between the common port and the center of the diaphragm.

One side of the sliding block is provided with a fixed pressure head, the other side of the sliding block is provided with a limiting hole, and a second spring and a normally open pressure head are installed in the limiting hole.

Normally open pressure head top processing step ring, install the second spring between step ring and the spacing hole, fixed pressure head and normally open the pressure head and set up with the diaphragm both sides respectively relatively, fixed pressure head and normally open the pressure head control diaphragm and normally open the state of opening and shutting of port or normally closed port respectively.

And an exhaust groove is also processed on the sliding block and is communicated with the cavity of the valve body and the valve seat.

The iron shell is provided with a through hole for accommodating the positioning sleeve, and the positioning sleeve is embedded between the valve seat and the iron shell.

The locating sleeve in slide and be equipped with the moving iron, the tip of moving iron is equipped with annular arch, first spring card is located between annular arch and the iron-clad terminal surface, the iron-clad is equipped with the shell outward.

And one end of the coil framework is also fixedly provided with a support, the support is provided with an adapter plate and a circuit board, and the coil is connected with the adapter plate and the circuit board and then is externally connected with a power supply through a lead.

The movable iron extends into the coil framework and is arranged opposite to the static iron, and the axial distance between the movable iron and the stop iron is the opening and closing stroke of the electromagnetic valve.

Compared with the prior art, the utility model has the beneficial effects that: the device enables two sides of the diaphragm to stably lift through the fixed pressure heads and the elastic normally-open pressure heads on two sides of the sliding block, the air exhaust groove is formed in the sliding block, the piston effect is eliminated, the valve body action part and the electromagnet part are designed to be in non-fastening connection and are independent, and the diaphragm can be reliably sealed when the electromagnetic valve is electrified and attracted.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an exploded schematic view of the present invention;

fig. 3 is a block diagram of the present invention.

In the figure: 1. a valve cover; 2. a valve body; 3. a valve seat; 4. an iron shell; 5. a membrane; 6. a coil bobbin; 7. a screw; 8. a slider; 81. an exhaust groove; 82. fixing a pressure head; 83. a limiting hole; 9. a positioning sleeve; 10. moving iron; 11. a normally open pressure head; 12. static iron; 13. a support; 14. a first spring; 15. a housing; 16. plugging a tail plug; 17. a circuit board; 18. an adapter plate; 19. a seal ring; 20. a second spring; 21. a pin.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is noted that, unless explicitly stated or limited otherwise, the terms "fixed," "mounted," "connected," "disposed," and the like are used in a generic sense, e.g., when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, in a first embodiment, the rocker arm type three-way diaphragm solenoid valve of the present invention is used for controlling a normally open port and a normally closed port to be respectively opened and closed to communicate with a common port, the normally open port, the normally closed port and the common port are respectively machined on a valve cover 1 and provided with a sealing ring 19 and a sealing ring 19, and the common port is located between the normally open port and the normally closed port. The electromagnetic valve comprises a valve body 2, one end of the valve body 2 is connected with a valve cover 1, a rotatable diaphragm 5 is arranged between the valve body 2 and the valve cover 1, a sliding block 8 is arranged in a cavity of the valve body 2 in a sliding mode, the end part of the sliding block 8 corresponds to the diaphragm 5, one side of the sliding block 8 is fixed, and the other side of the sliding block 8 is in elastic contact with the diaphragm 5 and is used for pushing two sides of the diaphragm 5 to lift;

disk seat

3, 3 one end of disk seat connect valve body 2, the slider 8 is connected to the 10 one end of moving iron in the disk seat 3, move 10 other ends of iron and stretch into iron-clad 4, move and be equipped with first spring 14 between iron 10 and the iron-clad 4, coil skeleton 6 is equipped with in the iron-clad 4, is equipped with quiet iron 12 in the coil skeleton 6, quiet iron 12 sets up with moving 10 coaxial relative of iron, 6 outer winding coils of coil skeleton are circular telegram.

When the coil is electrified, the static iron 12 adsorbs the moving iron 10 to drive the sliding block 8 to move towards the iron shell 4, the magnetic attraction is larger than the acting force of the first spring 14, the sliding block 8 moves and is far away from the diaphragm 5, at the moment, the fixed end on one side of the sliding block 8 is far away from the diaphragm 5, the other side of the sliding block 8 elastically jacks up the diaphragm 5, and the opening and closing of the ports are realized due to the different heights of the two ends of the diaphragm 5; on the contrary, when the coil is powered off, the magnetic force of the static iron 12 is weakened or even disappears, the acting force of the first spring 14 is greater than the magnetic attraction force, the first spring 14 jacks up the moving iron 10 to drive the sliding block 8 to be close to the diaphragm 5, at the moment, the fixed end on one side of the sliding block 8 is close to the diaphragm 5, the other side of the sliding block 8 is elastically pressed by the diaphragm 5, and the opening and closing of the ports are realized through the difference of the heights of the two ends of the diaphragm 5.

In the second embodiment, the rocker arm type three-way diaphragm solenoid valve is used for controlling the normally open port and the normally closed port to be respectively opened and closed and communicated with the common port, the normally open port, the normally closed port and the common port are respectively machined on the valve cover 1 and provided with the sealing ring 19, and the common port is located between the normally open port and the normally closed port. The electromagnetic valve comprises a valve body 2, one end of the valve body 2 is connected with a valve cover 1, a rotatable diaphragm 5 is arranged between the valve body 2 and the valve cover 1, a sliding block 8 is arranged in a cavity of the valve body 2 in a sliding mode, the end part of the sliding block 8 corresponds to the diaphragm 5, one side of the sliding block 8 is fixed, and the other side of the sliding block 8 is in elastic contact with the diaphragm 5 and is used for pushing two sides of the diaphragm 5 to lift;

disk seat

Furthermore, the valve body 2 is connected with the middle part of the diaphragm 5 through the pin 21, the diaphragm 5 rotates around the pin 21 and opens or closes the normally open port or the normally closed port, namely, one side of the diaphragm 5 is close to the normally open port or the normally closed port to close the normally open port or the normally closed port, and as the diaphragm 5 rotates around the pin 21, the seesaw is equivalent to a structure, and when one end is closed, the other end is opened. The common port is opposite to the center of the diaphragm 5, and a gap is reserved between the common port and the diaphragm 5, namely, the common port is always kept open and is communicated with a normally open port or a normally closed port or a closed channel is realized. In the design of the diaphragm 5 of the device, the structures of mutual interpenetration are made on the diaphragm 5 and the diaphragm 5 framework, the diaphragm 5 framework facilitates the interpenetration of the pin 21, and the diaphragm 5 framework is structurally enhanced corresponding to the positions of the normally-open port and the normally-closed port. The rubber part and the plastic skeleton part are firmly locked and integrally formed in the hot-press forming process of the diaphragm 5, so that the skeleton of the diaphragm 5 of the electromagnetic valve is prevented from loosening after more than 200 thousands of actions.

Third embodiment, on the basis of second technical scheme of embodiment, further, 8 one side of slider be equipped with fixed pressure head 82, slider 8 opposite side processing has spacing hole 83, installs second spring 20 and normally open pressure head 11 in the spacing hole 83, fixed pressure head 82 is located the left and right sides of slider 8 respectively, is equivalent to the both ends of seesaw and sets up the pressure head respectively, and the one end jack-up of seesaw then the other end descends. Normally open 11 top processing step rings of pressure head, install second spring 20 between step ring and the spacing hole 83, fixed pressure head 82 sets up with 5 both sides of diaphragm respectively with normally opening pressure head 11, specifically, the diaphragm 5 skeleton corresponds fixed pressure head 82 and normally opens the position of inserting that pressure head 11 set up the cylinder reinforcing to bear the effort of fixed pressure head 82 or normally opening pressure head 11. When the fixed pressure head 82 is pressed against the diaphragm 5, the normally open pressure head 11 is pressed down to the limiting hole 83 by the diaphragm 5, and on the contrary, when the fixed pressure head 82 is far away from the diaphragm 5, the normally open pressure head 11 is pressed up by the second spring 20. The fixed pressure head 82 and the normally open pressure head 11 control the opening and closing states of the diaphragm 5 and the normally open port or the normally closed port respectively. An exhaust groove 81 is further processed on the sliding block 8, and the exhaust groove 81 is communicated with the cavities of the valve body 2 and the valve seat 3, so that the closed spaces of the on-off parts are communicated, and the piston effect is eliminated.

In the fourth embodiment, on the basis of the third technical solution of the third embodiment, a through hole for accommodating the positioning sleeve 9 is processed on the iron shell 4 and used for mounting and positioning the moving iron 10, and the positioning sleeve 9 is embedded between the valve seat 3 and the iron shell 4. The utility model discloses a valve seat, including position sleeve 9, locating sleeve 9, first spring 14 card are located between annular arch and the 4 terminal surfaces of iron-clad, the tip of moving iron 10 is equipped with annular arch, first spring 14 card, and this annular arch diameter is greater than the internal diameter of position sleeve 9, moves iron 10 and blocks to position sleeve 9 department when sliding along valve seat 3, at this moment, move iron 10 and quiet iron 12 two and adsorb motionless and the two is not the face contact, iron-clad 4 is equipped with shell 15 outward, shell 15 is an open-ended rectangle section of thick bamboo. Valve gap 1, valve body 2, disk seat 3 and iron-clad 4 pass through screw 7 to be connected, and iron-clad 4 adopts a part to independently constitute, and the cavity of iron-clad 4 is the cavity of upper and lower intercommunication, simple to operate, and the error is little.

In the fifth embodiment, on the basis of the fourth technical solution of the fourth embodiment, a support 13 is further fixed at one end of the coil bobbin 6, an adapter plate 18 and a circuit board 17 are installed on the support 13, the coil is externally connected with a power supply through a lead after being connected with the adapter plate 18 and the circuit board 17, the lead penetrates through a tail plug 16, and the tail plug 16 is installed on the shell 15. The moving iron 10 extends into the coil framework 6 and is arranged opposite to the static iron 12, and the axial distance between the moving iron 10 and the stop iron is the opening and closing stroke of the electromagnetic valve. In the specific design, the action part of the valve body 2 and the electromagnet part are designed to be in non-fastening connection, a gap of about 0.2mm is designed, namely, after the magnetic attraction force between the static iron 12 and the moving iron 10 overcomes the acting force of the first spring 14, a gap of 0.2mm is reserved between the static iron 12 and the moving iron 10 and is not contacted, when the electromagnet is attracted, the valve core and the sliding block 8 are separated from being contacted, the electromagnet part size chains of the valve body 2 are irrelevant and independent, and therefore the diaphragm 5 can be reliably sealed when the electromagnetic valve is electrified and attracted.

According to the working principle, when the electromagnetic valve is electrified, the sliding block 8 and the moving iron 10 act towards the valve cover 1 under the action of the first spring 14, the left side of the diaphragm 5 is pushed up by the fixed pressure head 82 on the left side of the sliding block 8, the normally closed port is closed, the right side of the diaphragm 5 is pressed downwards according to the lever principle of the seesaw, the normally open pressure head 11 is pressed into the limiting hole 83, and the normally open port is opened; when the electromagnetic valve is powered off, the sliding block 8 and the moving iron 10 act towards the static iron 12 under the action of electromagnetic force, the fixed pressure head 82 on the left side of the sliding block 8 leaves the diaphragm 5, the normally open pressure head 11 on the right side of the diaphragm 5 is jacked upwards under the action of the second spring 20, the normally closed port of the valve body 2 is opened, and the normally open port is closed.

In the device, the assembly and matching relationship of each part is the prior art or materials, and technicians can directly purchase or order the parts from the market according to the required product model and specification.

The electrical components presented in the text are all electrically connected with an external master controller and 220V commercial power or industrial power, and the master controller can be a conventional known device with a control function such as a computer.

The foregoing is merely a preferred embodiment of the present invention, and common general knowledge in the art of designing and describing specific structures and features has not been described in detail herein. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. Therefore, the embodiments should be considered as exemplary and not restrictive in any way, and any person skilled in the art should be considered as the technical scope of the present invention, and all equivalent substitutions or changes according to the technical solution of the present invention and the inventive concept thereof should be covered by the protection scope of the present invention.

Claims

1. A rocker arm type three-way diaphragm electromagnetic valve is used for controlling a normally-open port and a normally-closed port to be respectively opened and closed and communicated with a public port and is characterized by comprising a valve body, wherein one end of the valve body is connected with a valve cover, a rotatable diaphragm is arranged between the valve body and the valve cover, a sliding block is arranged in a cavity of the valve body in a sliding manner, the end part of the sliding block corresponds to the diaphragm, one side of the sliding block is fixed, and the other side of the sliding block is in elastic contact with the diaphragm;

2. The rocker arm type three-way diaphragm solenoid valve of claim 1, wherein the valve body is connected to the middle of the diaphragm by a pin, and the diaphragm rotates around the pin and opens or closes the normally open port or the normally closed port.

3. The three-way diaphragm solenoid valve of claim 2, wherein said common port is centrally opposite the diaphragm with a space therebetween.

4. The rocker arm type three-way diaphragm solenoid valve as claimed in claim 1, wherein one side of the slider is provided with a fixed pressure head, the other side of the slider is provided with a limiting hole, and a second spring and a normally open pressure head are arranged in the limiting hole.

5. The rocker arm type three-way diaphragm solenoid valve as claimed in claim 4, wherein a step ring is machined on the top of the normally open pressure head, a second spring is installed between the step ring and the limiting hole, the fixed pressure head and the normally open pressure head are respectively arranged opposite to two sides of the diaphragm, and the fixed pressure head and the normally open pressure head respectively control the opening and closing states of the diaphragm and the normally open port or the normally closed port.

6. The rocker arm type three-way diaphragm solenoid valve as claimed in claim 5, wherein the slider is further provided with an exhaust groove, and the exhaust groove is communicated with the cavity of the valve body and the cavity of the valve seat.

7. The rocker arm type three-way diaphragm solenoid valve as claimed in claim 1, wherein the iron shell is provided with a through hole for accommodating the positioning sleeve, and the positioning sleeve is embedded between the valve seat and the iron shell.

8. The rocker arm type three-way diaphragm solenoid valve of claim 7, wherein the positioning sleeve is slidably provided with a moving iron therein, the end of the moving iron is provided with an annular protrusion, the first spring is clamped between the annular protrusion and the end surface of the iron shell, and the iron shell is externally provided with a housing.

9. The rocker arm type three-way diaphragm solenoid valve as claimed in claim 1, wherein a bracket is further fixed at one end of the coil frame, an adapter plate and a circuit board are mounted on the bracket, and a power supply is externally connected through a lead after the coil is connected with the adapter plate and the circuit board.

10. The rocker arm type three-way diaphragm solenoid valve of claim 9, wherein the moving iron extends into the coil frame and is arranged opposite to the static iron, and the axial distance between the moving iron and the stop iron is the opening and closing stroke of the solenoid valve.