CN211475048U

CN211475048U - Ejector rod assembly and electromagnetic valve

Info

Publication number: CN211475048U
Application number: CN201921619732.3U
Authority: CN
Inventors: 黄小伟
Original assignee: Changzhou Puchen Electronic Co ltd
Current assignee: Changzhou Puchen Electronic Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-09-11
Anticipated expiration: 2029-09-27

Abstract

The utility model discloses a push rod subassembly and solenoid valve, this push rod subassembly for the valve body subassembly motion, and selectively cooperate with the valve port of valve body subassembly, thereby change the aperture of valve port, push rod subassembly include ejector pin and ejector pin cover, and the ejector pin acts on the ejector pin cover, makes its valve port motion for the valve body subassembly, has seted up balanced through-hole in the ejector pin cover, and balanced through-hole communicates with the centre bore of ejector pin, forms balanced passageway. In this way, the utility model discloses a balanced passageway on the thimble sleeve carries out self-balancing control, when the oil pressure of valve port department is too high, carries out the pressure release through this balanced passageway, when valve port department oil pressure was low excessively, can further ensure the control accuracy and the flexibility of magnetic valve through the balanced inside and outside oil pressure of the oil pressure balance of storing in the balanced passageway of output.

Description

Ejector rod assembly and electromagnetic valve

Technical Field

The utility model relates to a ejector pin subassembly and solenoid valve with balanced internal and external pressure function.

Background

An Electromagnetic valve (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.

The solenoid valve has a lot of, different solenoid valves play a role in control system's different positions, the most common is the check valve, the relief valve, the directional control valve, there is inclosed chamber in solenoid valves such as speed control valve, open at different positions has the through-hole, different oil pipe of every jogged joint, be the piston in the middle of the chamber, the two sides are two electro-magnets, which side's magnet coil circular telegram valve body will be attracted to which side, open or close different oil drain holes through control valve body's removal, and the inlet port is normally open, hydraulic oil will get into different oil drain pipes, then the piston that promotes the hydro-cylinder through oily pressure, the piston drives the piston rod again, the piston rod drives mechanical device. Thus, the mechanical movement is controlled by controlling the current on-off of the electromagnet.

Because the reciprocating motion of oil feed and piston rod in the valve body of solenoid valve can produce certain pressure in the inclosed cavity, lead to inside and outside oil pressure unbalance, this pressure can produce the resistance to the piston removes to influence solenoid valve's performance, lead to current control's malfunctioning, influence the control accuracy.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides one kind and can balance inside and outside oil pressure by oneself, further improves control accuracy and flexibility ejector pin subassembly and solenoid valve.

In order to solve the technical problem, the utility model discloses a technical scheme be: the ejector rod assembly moves relative to the valve body assembly and is selectively matched with a valve port of the valve body assembly so as to change the opening degree of the valve port.

In a preferred embodiment of the present invention, one end of the ejector rod is coaxially disposed in the thimble sleeve, the thimble sleeve is provided with a drainage port and an adjustment port, the drainage port is disposed near the valve port, the adjustment port is disposed away from the valve port, a drainage channel is formed between the ejector rod and the thimble sleeve to connect the drainage port and the adjustment port, and the thimble sleeve moves under the action of the ejector rod to make the adjustment port and the drainage port of the valve body assembly gradually communicate with each other by staggering and then stagger gradually.

In a preferred embodiment of the present invention, the engaging head is provided on the thimble sleeve, the cross-section of the engaging head is trapezoidal, the trapezoidal large diameter end is disposed near the thimble, the trapezoidal small diameter end is disposed near the valve port, the small diameter end gradually passes through the valve port to the large diameter end, and the valve port is gradually separated from the large diameter end to the small diameter end, thereby changing the opening degree of the valve port.

In a preferred embodiment of the present invention, the balance through hole is disposed in the fitting head, and forms a stepped hole structure with the fitting hole of the push rod, and the balance through hole is in butt communication with the center hole of the push rod.

In a preferred embodiment of the present invention, the diameter of the balance through hole is smaller than the diameter of the central hole of the push rod.

In a preferred embodiment of the present invention, one end of the ejector rod-end ejector sleeve is abutted against each other, the ejector sleeve is provided with an adjusting port, the adjusting port is far away from the valve port, a discharge passage communicated with the adjusting port is provided between the ejector rod and the ejector sleeve, the discharge passage is provided between the valve port and the adjusting port, and the ejector sleeve moves under the action of the ejector rod to gradually communicate with the discharge port of the valve body assembly by staggering and then gradually stagger.

In a preferred embodiment of the present invention, the engaging head is provided at one end of the thimble sleeve, the other end abuts against the thimble, the cross-section of the engaging head is trapezoidal, the trapezoidal large diameter end is close to the thimble, the trapezoidal small diameter end is close to the valve port, the small diameter end to the large diameter end gradually passes through the valve port, and then gradually leaves away from the valve port from the large diameter end to the small diameter end, thereby changing the opening degree of the valve port.

In a preferred embodiment of the present invention, the balance through hole extends through the entire thimble sleeve and is in butt communication with the central hole of the thimble.

In a preferred embodiment of the present invention, the diameter of the balance through hole is smaller than or equal to the diameter of the central hole of the push rod.

For solving the technical problem, the utility model discloses a another technical scheme is: there is provided a solenoid valve comprising a tappet assembly as claimed in any one of the preceding claims.

The utility model has the advantages that: the utility model discloses a balanced passageway on the thimble cover carries out self-balancing control, when the oil pressure of valve port department is too high, carries out the pressure release through this balanced passageway, when valve port department oil pressure was low excessively, can further ensure the control accuracy and the flexibility of magnetic valve through the balanced inside and outside oil pressure of the oil pressure balance of storing in the balanced passageway of output.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

FIG. 1 is a schematic structural view of a preferred embodiment of a push rod assembly of the present invention;

FIG. 2 is a schematic structural view of a solenoid valve in a free state with the ram assembly of FIG. 1;

FIG. 3 is a schematic structural view of a closed state of a solenoid valve having the ram assembly of FIG. 1;

FIG. 4 is a schematic structural view of another preferred embodiment of the ejector pin assembly of the present invention;

fig. 5 is a schematic structural view of a solenoid valve having the ram assembly shown in fig. 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model discloses embodiment 1: as shown in figures 1, 2 and 3,

the utility model provides an electromagnetic valve, includes casing subassembly 1, ejector pin subassembly 2 and valve body subassembly 3, ejector pin subassembly 1 and valve body subassembly 3 all are connected with casing subassembly 1. The valve body component 3 is provided with a valve port 3-1 and a discharge port 3-2, the push rod component 1 moves relative to the valve body component 3, and one end of the push rod component 1 is selectively matched with the valve port 3-1, so that the opening degree of the valve port 3-1 is changed.

It is worth mentioning that: the structures of the shell assembly 1 and the valve body assembly 3 are not limited, and the structures of the valve body assembly 3 and the shell assembly 1 in any structure are suitable for the structure of the embodiment.

The ejector rod component 2 comprises an ejector rod 2-1 and an ejector rod sleeve 2-2, the ejector rod 2-1 acts on the ejector rod sleeve 2-2 to enable the ejector rod sleeve 2-2 to move relative to a valve port 3-1 of the valve body component 3, a balance through hole 2-3 is formed in the ejector rod sleeve 2-2, and the balance through hole 2-3 is communicated with a center hole of the ejector rod 2-1 to form a balance channel.

One end of the ejector rod 2-1 is coaxially arranged in the ejector sleeve 2-2, a drainage port 2-4 and an adjusting port 2-5 are arranged on the ejector sleeve 2-2, the drainage port 2-4 is arranged close to the valve port 3-1, the adjusting port 2-5 is arranged far away from the valve port 3-1, a drainage channel 2-6 for communicating the drainage port 2-4 with the adjusting port 2-5 is formed between the ejector rod 2-1 and the ejector sleeve 2-2, and the ejector sleeve 2-2 moves under the action of the ejector rod 2-1, so that the adjusting port 2-5 and the drainage port 3-2 of the valve body assembly 3 are gradually communicated and then gradually staggered.

The thimble sleeve 2-2 is provided with a matching head 2-2-1, the cross section of the matching head 2-2-1 is in a trapezoid shape, the large diameter end of the trapezoid is close to the thimble 2-1, the small diameter end of the trapezoid is close to the valve port 3-1, the small diameter end and the large diameter end gradually penetrate through the valve port 3-1 and then gradually get away from the valve port 3-1 from the large diameter end to the small diameter end, so that the opening degree of the valve port 3-1 is changed.

The balance through hole 2-3 is arranged in the matching head 2-2-1 and forms a first-stage stepped hole structure with the assembling hole of the ejector rod 2-1, and the balance through hole 2-3 is communicated with the central hole of the ejector rod in a butt joint mode to form a balance channel.

The preferred embodiment is that the diameter of the balance through hole 2-3 is smaller than the diameter of the central hole of the mandrel.

When the electromagnetic valve works, liquid enters from the valve port 3-1 and is discharged from the discharge port 3-2 through the discharge channel, the ejector rod component is matched with the valve port 3-1 in the process of moving relative to the valve port 3-1, the opening degree of the valve port is gradually reduced, the adjusting port 2-5 and the discharge port 3-2 are staggered to be gradually communicated and are gradually staggered, so that the flow of the electromagnetic valve is changed from small to large and then reduced, and the flow of the electromagnetic valve is controlled.

The solenoid valve is at the working process, and when the oil pressure was too high in the valve body subassembly, pressure pushed fluid in the balanced passageway to balanced internal and external pressure ensures the control accuracy of solenoid valve, and when the oil pressure was crossed lowly in the valve body subassembly, the fluid in the balanced passageway can be because pressure differential to valve body subassembly output, thereby adjusts the under-voltage problem, realizes that internal and external oil pressure is balanced, ensures the control accuracy of solenoid valve.

The utility model discloses embodiment 2: as shown in figures 4 and 5 of the drawings,

the solenoid valve comprises a shell assembly 1 ', a push rod assembly 2' and a valve body assembly 3 ', wherein the push rod assembly 2' and the valve body assembly 3 'are connected with the shell assembly 1'. The valve body component 3 ' is provided with a valve port 3-1 ' and a discharge port 3-2 ', the push rod component 2 ' moves relative to the valve body component 3 ', one end of the push rod component 2 ' is selectively matched with the valve port 3-1 ', and therefore the opening degree of the valve port is changed.

Wherein, the structures of the shell component 1 'and the valve body component 3' are not limited, and any structure of the valve body component and the shell component is suitable for the structure of the embodiment

The ejector rod component 2 'comprises an ejector rod 2-1' and an ejector pin sleeve 2-2 ', the ejector rod 2-1' acts on the ejector pin sleeve 2-2 'to enable the ejector pin sleeve to move relative to a valve port 3-1' of the valve body component 3 ', a balance through hole 2-3' is formed in the ejector pin sleeve 2-2 ', and the balance through hole 2-3' is communicated with a central hole of the ejector rod to form a micro-balance channel.

One end of a thimble sleeve 2-2 ' at one end of the ejector rod 2-1 ' is abutted against each other, an adjusting port 2-4 ' is formed in the thimble sleeve 2-2 ', the adjusting port 2-4 ' is arranged far away from the valve port 3-1 ', a discharge channel 2-5 ' communicated with the adjusting port 2-4 ' is arranged between the ejector rod 2-1 ' and the thimble sleeve 2-2 ', the discharge channel 2-5 ' is arranged between the valve port 3-1 ' and the adjusting port 2-4 ', and the thimble sleeve 2-2 ' moves under the action of the ejector pin 2-1 ' so that the adjusting port 2-4 ' is gradually communicated with the discharge port 3-2 ' of the valve body assembly from staggering to gradually staggering.

One end of the thimble sleeve 2-2 'is provided with a matching head, the other end of the thimble sleeve is mutually abutted with the thimble 2-1', the cross section of the matching head is in a trapezoid shape, the trapezoid large diameter end is arranged close to the thimble, the trapezoid small diameter end is arranged close to the valve port, the small diameter end gradually penetrates through the valve port to the large diameter end, and then the valve port is gradually far away from the large diameter end to the small diameter end, so that the opening degree of the valve port is changed.

The balance through hole 2-3 ' penetrates through the whole thimble sleeve 2-2 ' and is in butt joint communication with a central hole of the thimble 2-1 '.

The diameter of the balance through hole 2-3 'is smaller than or equal to that of the central hole of the ejector rod 2-1'.

When the electromagnetic valve works, liquid enters from the valve port 3-1 'and is discharged from the discharge port 3-2' through the discharge channel 2-5 ', the ejector rod component 2' is matched with the valve port 3-1 'in the process that the ejector rod component 2' moves relative to the valve port 3-1 ', the opening degree of the valve port 3-1' is gradually reduced, the regulating port 2-4 'and the discharge port 3-2' are staggered to be gradually communicated and are gradually staggered, so that the flow of the electromagnetic valve is changed from small to large and then reduced, and the flow of the electromagnetic valve is controlled.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. The ejector rod component moves relative to the valve body component and is selectively matched with a valve port of the valve body component so as to change the opening degree of the valve port.

2. The plunger assembly of claim 1, wherein one end of the plunger is coaxially disposed in the plunger sleeve, the plunger sleeve is provided with a discharge port and an adjustment port, the discharge port is disposed close to the valve port, the adjustment port is disposed away from the valve port, a discharge passage communicating the discharge port with the adjustment port is formed between the plunger and the plunger sleeve, and the plunger sleeve moves under the action of the plunger to gradually communicate the adjustment port with the discharge port of the valve body assembly from a staggered state and then gradually stagger from the adjustment port.

3. The tappet assembly of claim 2, wherein the coupling head is disposed on the tappet sleeve, the coupling head has a trapezoidal cross-section, the trapezoidal large diameter end is disposed near the tappet, the trapezoidal small diameter end is disposed near the valve port, the small diameter end gradually penetrates through the valve port to the large diameter end, and the small diameter end gradually leaves away from the valve port from the large diameter end to the small diameter end, so as to change the opening degree of the valve port.

4. The lift pin assembly of claim 3, wherein the balance through hole is formed in the fitting head to form a stepped hole structure with the fitting hole of the lift pin, and the balance through hole is in butt communication with the central hole of the lift pin.

5. A ram assembly according to claim 4, wherein the diameter of the balance through hole is smaller than the diameter of the central ram hole.

6. The stem assembly of claim 1, wherein one end of a stem sleeve at one end of the stem abuts against each other, the stem sleeve is provided with an adjustment port, the adjustment port is disposed away from the valve port, a drainage channel is disposed between the stem and the stem sleeve and is in communication with the adjustment port, the drainage channel is disposed between the valve port and the adjustment port, and the stem sleeve moves under the action of the stem sleeve, such that the adjustment port and the drainage port of the valve body assembly are gradually communicated from a staggered state to a further staggered state.

7. The lift pin assembly of claim 6, wherein the lift pin sleeve has a fitting head at one end and a fitting head at the other end, the fitting head is in a trapezoidal shape, the large diameter end of the trapezoidal shape is disposed near the lift pin, the small diameter end of the trapezoidal shape is disposed near the valve port, the small diameter end gradually passes through the valve port from the small diameter end to the large diameter end and then gradually departs from the valve port from the large diameter end to the small diameter end, thereby changing the opening degree of the valve port.

8. The ram assembly of claim 7, wherein the balance through-hole extends through the entire ram sleeve and is in abutting communication with the central bore of the ram.

9. A ram assembly according to claim 8, wherein the diameter of the balance through hole is less than or equal to the diameter of the ram central bore.

10. A solenoid valve comprising a tappet assembly as claimed in any one of claims 1 to 9.