CN112943941A

CN112943941A - Electromagnetic valve with buffer device

Info

Publication number: CN112943941A
Application number: CN202110230964.5A
Authority: CN
Inventors: 陈清海; 施云飞
Original assignee: Anhui Ningguo New Tripod Auto Parts Co ltd
Current assignee: Anhui Ningguo New Tripod Auto Parts Co ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-06-11

Abstract

The invention discloses a solenoid valve with a buffer device, which comprises a valve body and an electromagnetic assembly arranged on the upper part of the valve body; the electromagnetic assembly comprises a shell, a static iron core, a movable iron core and a coil; the static iron core is fixed on the shell and is positioned right above the movable iron core; the coil is arranged on the shell, and the static iron core and the movable iron core are both positioned in the coil; the lower end of the static iron core is provided with a buffer component; the buffer assembly comprises a telescopic rod and a first spring; the telescopic rod is vertically arranged; the upper end of the telescopic rod is fixed on the static iron core; the first spring is sleeved outside the telescopic rod. According to the electromagnetic valve with the buffer device, due to the arrangement of the buffer assembly, when the static iron core and the movable iron core attract each other, the buffer assembly forms buffer between the static iron core and the movable iron core, so that the movable iron core and the static iron core are prevented from directly colliding, on one hand, noise is reduced, more importantly, the movable iron core and the static iron core can be prevented from being damaged, and the service life is prolonged.

Description

Electromagnetic valve with buffer device

Technical Field

The invention relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve with a buffering device.

Background

The electromagnetic valve is an industrial device controlled by electromagnetism, has wide application in production and life, is an automatic basic actuator for controlling fluid, is mainly but not limited to be applied to hydraulic and pneumatic devices, aims to adjust the direction, flow rate, speed and other parameters of fluid media, can realize expected control by matching with different circuits, is flexible to control and can achieve certain control precision.

The electromagnetic valve generally comprises a valve seat, a static iron core, a movable iron core, an electromagnetic coil and other components, wherein one or more pore passages and a fluid chamber are formed in the valve seat; the electromagnetic coil is installed outside the magnetic isolation sleeve, and generates or eliminates magnetic force between the static iron core and the movable iron core through electrifying or powering off, so that the movable iron core moves up and down in the magnetic isolation sleeve to form a simple and compact fluid switch and control mechanism; the solenoid valve may be used alone as a control valve, or two or more solenoid valves may be used in combination as a proportional control valve, or as a pilot valve for opening a main valve.

The existing electromagnetic valve has the following problems in use, when the coil is electrified, the static iron core and the movable iron core attract each other, the movable iron core moves upwards and is adsorbed together with the static iron core, and when the movable iron core and the static iron core are in rigid contact, the collision force is large, the movable iron core is easy to collide and damage, and the noise is large. Therefore, how to design the electromagnetic valve with the buffer device is the technical problem to be solved by the invention.

Disclosure of Invention

The invention provides a solenoid valve with a buffer device aiming at the defects of the prior art.

The invention solves the technical problems through the following technical means:

the electromagnetic valve with the buffer device comprises a valve body and an electromagnetic assembly arranged on the upper part of the valve body;

a valve cavity, a liquid inlet, a liquid outlet and a sealing plug are arranged in the valve body; a communicating opening is arranged between the valve cavity and the liquid inlet; the valve cavity is communicated with the liquid outlet; the sealing plug is arranged at the upper part of the communication port, and the bottom end of the sealing plug is matched with the communication port;

the electromagnetic assembly comprises a shell, a static iron core, a movable iron core and a coil; the shell is arranged on the upper part of the valve body; the movable iron core is arranged in the valve cavity, and the bottom end of the movable iron core is fixedly connected with the top end of the sealing plug; the static iron core is fixed on the shell and is positioned right above the movable iron core; the coil is arranged on the shell, and the static iron core and the movable iron core are both positioned in the coil;

the lower end of the static iron core is provided with a buffer component; the buffer assembly comprises a telescopic rod and a first spring; the telescopic rod is vertically arranged; the upper end of the telescopic rod is fixed on the static iron core; the first spring is sleeved outside the telescopic rod.

As an improvement of the above technical solution, in the electromagnetic valve with the buffer device, the lower end of the static iron core is provided with an installation groove; the top end of the telescopic rod and the top end of the first spring extend into the mounting groove; the lower end of the telescopic rod is provided with a transverse plate; the lower surface of diaphragm is provided with a plurality of cushion.

As an improvement of the above technical solution, in the electromagnetic valve with a buffer device, the elastic pad is a magnetic isolation elastic member.

As an improvement of the technical scheme, a gap is arranged between every two adjacent elastic cushions, and the width of the gap is 3/4-5/4 of the width of the elastic cushion.

As an improvement of the above technical solution, in the electromagnetic valve with the buffer device, a second spring is sleeved outside the sealing plug; the bottom end of the sealing plug protrudes outwards to form a support platform; the second spring is arranged on the support platform; a baffle plate is arranged in the valve cavity; the baffle is positioned right above the second spring.

The invention has the advantages that: according to the electromagnetic valve with the buffer device, due to the arrangement of the buffer assembly, when the static iron core and the movable iron core attract each other, the buffer assembly forms buffer between the static iron core and the movable iron core, so that the movable iron core and the static iron core are prevented from directly colliding, on one hand, noise is reduced, more importantly, the movable iron core and the static iron core can be prevented from being damaged, and the service life is prolonged.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is an enlarged view of the structure of the present invention at A.

Fig. 3 is a schematic structural diagram of the static iron core and the movable iron core which are adsorbed together.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

Embodiment 1, referring to the drawings, a solenoid valve with a damping device includes a valve body 1 and an electromagnetic assembly 2 disposed on an upper portion of the valve body 1;

a valve cavity 11, a liquid inlet 12, a liquid outlet 13 and a sealing plug 14 are arranged in the valve body 1; a communication port 15 is arranged between the valve cavity 11 and the liquid inlet 12; the valve cavity 11 is communicated with the liquid outlet 13; the sealing plug 14 is arranged at the upper part of the communication port 15, and the bottom end of the sealing plug 14 is matched with the communication port 15;

the electromagnetic assembly 2 comprises a shell 21, a static iron core 22, a movable iron core 23 and a coil 24; the shell 21 is arranged on the upper part of the valve body 1; the movable iron core 23 is arranged in the valve cavity 11, and the bottom end of the movable iron core 23 is fixedly connected with the top end of the sealing plug 14; the static iron core 22 is fixed on the shell 21, and the static iron core 22 is positioned right above the movable iron core 23; the coil 24 is arranged on the shell 21, and the static iron core 22 and the movable iron core 23 are both positioned in the coil 24;

the lower end of the static iron core 22 is provided with a buffer component 221; the buffering assembly 221 comprises a telescopic rod 2211 and a first spring 2212; the telescopic rod 2211 is vertically arranged; the upper end of the telescopic rod 2211 is fixed on the static iron core 22; the first spring 2212 is sleeved outside the telescopic rod 2211;

due to the arrangement of the buffer assembly 221, when the static iron core 22 and the movable iron core 23 attract each other, the buffer assembly 221 forms buffer between the static iron core 22 and the movable iron core 23, so that the movable iron core 23 and the static iron core 22 are prevented from directly colliding, on one hand, noise is reduced, more importantly, the movable iron core 23 and the static iron core 22 can be prevented from being damaged by collision, and the service life is prolonged; meanwhile, the first spring 2212 on the buffer assembly 221 also plays a role in resetting the elastic force of the movable iron core 23, and when the power is off, the movable iron core 23 is reset through the elastic force of the first spring 2212;

the specific working principle of the invention is as follows: the coil 24 is electrified to form an excitation magnetic field for the static iron core 22 and the movable iron core 23, magnetic force is formed between the static iron core 22 and the movable iron core 23 to attract each other, and the movable iron core 23 moves upwards to extrude the elastic component 221; when the movable iron core 23 moves upwards, the sealing plug 14 is driven to move upwards, the liquid inlet 12 is communicated with the valve cavity 11, and the valve is in an open state; when the coil 24 is powered off, the movable iron core 23 falls down by the elastic force of the first spring 2212, the sealing plug 14 covers the communication port 15, and the valve is in a closed state;

according to the electromagnetic valve with the buffer device, due to the arrangement of the buffer assembly, when the static iron core and the movable iron core attract each other, the buffer assembly forms buffer between the static iron core and the movable iron core, so that the movable iron core and the static iron core are prevented from directly colliding, on one hand, noise is reduced, more importantly, the movable iron core and the static iron core can be prevented from being damaged, and the service life is prolonged.

As an improvement of the above technical solution, the lower end of the stationary core 22 is provided with an installation groove 222; the top end of the telescopic rod 2211 and the top end of the first spring 2212 both extend into the mounting groove 222; the lower end of the telescopic rod 2211 is provided with a transverse plate 2213; a plurality of elastic pads 2214 are arranged on the lower surface of the transverse plate 2213;

the arrangement of the transverse plate 2213 and the elastic pad 2214, the transverse plate 2213 is used for realizing the adsorption of the movable iron core 23, the arrangement of the elastic pad 2214 reduces the collision between the movable iron core 23 and the transverse plate 2213 on the one hand, and reduces the collision damage, more importantly, the elastic pad 2214 is arranged between the transverse plate 2213 and the movable iron core 23 at intervals, so that the movable iron core 23 is prevented from being in direct contact with the transverse plate 2213, after the power of the coil 24 is cut off, the movable iron core 23 can be quickly separated from the transverse plate 2213, the purpose of quick response is achieved, and the response speed of the.

As a modification of the above technical solution, the elastic pad 2214 is a magnetic isolation elastic member; such as a magnetic-isolating rubber member;

the elastic pad 2214 is made of a magnetic isolation material, so that the attraction force between the static iron core 22 and the movable iron core 23 when the coil 24 is energized can be further reduced, and the response time when the coil is de-energized can be further prolonged.

As an improvement of the above technical solution, a gap is provided between two adjacent elastic pads 2214, and the width of the gap is 3/4-5/4 of the width of the elastic pad 2214;

gaps are formed between the adjacent elastic pads 2214, so that the elastic pads 2214 are prevented from completely covering the space between the movable iron core 23 and the transverse plate 2213, and attraction between the movable iron core 23 and the transverse plate and between the movable iron core 22 is ensured during power-on.

As a modification of the above technical solution, a second spring 141 is sleeved outside the sealing plug 14; the bottom end of the sealing plug 141 protrudes outwards to form a support platform; the second spring 141 is arranged on the support platform; a baffle plate 111 is arranged in the valve cavity 11; the baffle 111 is positioned right above the second spring 141;

the setting of second spring 141, when movable iron core 23 and quiet iron core 22 attract each other, sealing plug 14 extrusion second spring 141, when the outage, second spring 141 has decurrent resilience to sealing plug 14, makes movable iron core 23 and quiet iron core 22 separate each other, and elastic sleeve 221, first spring 222 and the cooperation of second spring 141 form multiple resilience canceling release mechanical system, have improved the response time of solenoid valve greatly.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The electromagnetic valve with the buffer device comprises a valve body (1) and an electromagnetic assembly (2) arranged on the upper part of the valve body (1); the method is characterized in that:

a valve cavity (11), a liquid inlet (12), a liquid outlet (13) and a sealing plug (14) are arranged in the valve body (1); a communicating opening (15) is arranged between the valve cavity (11) and the liquid inlet (12); the valve cavity (11) is communicated with the liquid outlet (13); the sealing plug (14) is arranged at the upper part of the communicating opening (15), and the bottom end of the sealing plug (14) is matched with the communicating opening (15);

the electromagnetic assembly (2) comprises a shell (21), a static iron core (22), a movable iron core (23) and a coil (24); the shell (21) is arranged on the upper part of the valve body (1); the movable iron core (23) is arranged in the valve cavity (11), and the bottom end of the movable iron core (23) is fixedly connected with the top end of the sealing plug (14); the static iron core (22) is fixed on the shell (21), and the static iron core (22) is positioned right above the movable iron core (23); the coil (24) is arranged on the shell (21), and the static iron core (22) and the movable iron core (23) are both positioned in the coil (24);

the lower end of the static iron core (22) is provided with a buffer component (221); the buffer assembly (221) comprises a telescopic rod (2211) and a first spring (2212); the telescopic rod (2211) is vertically arranged; the upper end of the telescopic rod (2211) is fixed on the static iron core (22); the first spring (2212) is sleeved outside the telescopic rod (2211).

2. The solenoid valve with a damping device according to claim 1, wherein: the lower end of the static iron core (22) is provided with a mounting groove (222); the top end of the telescopic rod (2211) and the top end of the first spring (2212) extend into the mounting groove (222); the lower end of the telescopic rod (2211) is provided with a transverse plate (2213); the lower surface of the transverse plate (2213) is provided with a plurality of elastic pads (2214).

3. The electromagnetic valve with a damping device according to claim 2, characterized in that: the elastic pad (2214) is a magnetic isolation elastic piece.

4. The electromagnetic valve with a damping device according to claim 2, characterized in that: a gap is arranged between two adjacent elastic pads (2214), and the width of the gap is 3/4-5/4 of the width of the elastic pad (2214).

5. The solenoid valve with a damping device according to claim 1, wherein: a second spring (141) is sleeved outside the sealing plug (14); the bottom end of the sealing plug (141) protrudes outwards to form a support platform; the second spring (141) is arranged on the support platform; a baffle plate (111) is arranged in the valve cavity (11); the baffle (111) is located just above the second spring (141).