CN220102069U - Electromagnetic valve - Google Patents

Abstract

The utility model provides an electromagnetic valve, which comprises a guide pipe, wherein the guide pipe is a straight pipe, and the side wall of the guide pipe is provided with an opening; the valve seat is connected with the conduit and is provided with a valve port; a valve core component movably arranged in the guide pipe to open and close the valve opening; the check ring is fixed in the conduit and is positioned at one side of the opening far away from the valve port; the elastic piece is positioned in the guide pipe, one end of the elastic piece is abutted with the check ring, and the other end of the elastic piece is abutted with the valve core component. In this embodiment, the valve seat has a valve opening through which the flow medium can pass. The valve core component can move in the guide pipe, and the opening and the closing of the electromagnetic valve are controlled by controlling the opening and the closing of the valve port. The retainer ring limits the elastic element on one side of the opening far away from the valve port, so that the elastic element is prevented from being impacted by medium flowing in from the opening, and the problem that the elastic element and the valve core component are rubbed due to the fact that the elastic element is impacted by high-pressure medium is solved.

Description

Electromagnetic valve

Technical Field

The utility model relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve.

Background

Currently, solenoid valves include normally open solenoid valves and normally closed solenoid valves. For a normally open solenoid valve, the valve port is in a normally open state in a non-energized state. After the power is on, under the action of electromagnetic force and the attraction of the static iron core, the acting force of the elastic piece is overcome, and the valve port is closed. In the prior art, the outside of solenoid valve adopts the split type design of sleeve pipe and cubic valve body, and the elastic component is arranged in the valve body, and the air inlet position is placed to the lower part. The lower part of the elastic piece is placed at the air inlet position, and high-pressure medium can impact the elastic piece, so that the bottom of the spring is offset, the valve core is subjected to friction aggravation, and the switching valve is affected.

There is therefore a need to optimize existing solenoid valves to at least address the problem of the springs being vulnerable to media impact.

Disclosure of Invention

The utility model provides an electromagnetic valve, which aims to solve the problem that friction is aggravated by high-pressure medium impacting an elastic piece in the prior art.

In order to solve the above problems, the present utility model provides a solenoid valve comprising: the guide pipe is a straight pipe, and the side wall of the guide pipe is provided with an opening; the valve seat is connected with one end of the conduit and is provided with a valve port; a valve core part movably arranged in the conduit to open or close the valve port; the check ring is fixed in the conduit and is positioned at one side of the opening far away from the valve port; the elastic piece is positioned in the guide pipe, one end of the elastic piece is abutted with the check ring, and the other end of the elastic piece is abutted with the valve core component.

Further, the catheter is an integral stainless steel tube.

Further, the retaining ring is of an annular structure, and the outer wall of the retaining ring is fixedly connected with the inner wall of the guide pipe.

Further, the outer wall of the retainer ring and the inner wall of the conduit are matched and welded.

Further, one end of the valve seat passes through the retainer ring, and the inner wall of the retainer ring is spaced from the outer wall of the valve seat.

Further, the retainer ring has at least one through hole, and the through hole communicates the side of the retainer ring facing the valve port with the side facing away from the valve port.

Further, the outer circumferential surface of the retainer ring is provided with at least one tangential surface, and a gap is formed between the tangential surface and the inner wall of the catheter.

Further, the periphery of the opening of the catheter is provided with a turned edge, the turned edge is positioned in the cavity of the catheter, and the retainer ring is in limit fit with the turned edge; the solenoid valve still includes first takeover, and first takeover penetrates the opening and with the turn-ups welding.

Further, the electromagnetic valve further comprises a static iron core, a movable iron core, a valve rod and a sealing head, wherein the static iron core is fixed in the guide pipe, the sealing head seals one end of the guide pipe far away from the valve seat, the movable iron core is movably arranged between the static iron core and the sealing head, the valve rod penetrates through the static iron core and is connected with the movable iron core, and the valve rod is used for pushing the valve core component to move.

Further, the electromagnetic valve further comprises a second connecting pipe, one end of the second connecting pipe penetrates into the hole of the valve seat, the second connecting pipe is matched with the valve seat and welded, and the second connecting pipe is communicated with the valve port.

By applying the technical scheme of the utility model, the electromagnetic valve comprises: the guide pipe is a straight pipe, and the side wall of the guide pipe is provided with an opening; the valve seat is connected with the conduit and is provided with a valve port; a valve core component movably arranged in the guide pipe to open and close the valve opening; the check ring is fixed in the conduit and is positioned at one side of the opening far away from the valve port; the elastic piece is positioned in the guide pipe, one end of the elastic piece is abutted with the check ring, and the other end of the elastic piece is abutted with the valve core component. In this embodiment, the valve seat has a valve opening through which the flow medium can pass. The valve core component can move in the guide pipe, and the opening and the closing of the electromagnetic valve are controlled by controlling the opening and the closing of the valve port. The retainer ring limits the elastic element on one side of the opening far away from the valve port, so that the elastic element is prevented from being impacted by medium flowing in from the opening, and the problem that the elastic element and the valve core component are rubbed due to the fact that the elastic element is impacted by high-pressure medium is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structural diagram of a solenoid valve provided by an embodiment of the present utility model;

FIG. 2 shows a schematic structural view of a first retainer ring according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a second retainer ring according to an embodiment of the present utility model;

FIG. 4 is a schematic structural view of a third retainer ring according to an embodiment of the present utility model;

fig. 5 shows a schematic structural diagram of a fourth retainer ring according to an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. a conduit; 11. an opening; 12. flanging;

20. a valve seat; 21. a valve port;

30. a valve core component;

40. a retainer ring; 41. cutting into sections;

50. an elastic member;

60. a stationary core;

70. a movable iron core;

80. a valve stem;

90. a seal head;

101. a first connection pipe; 102. and a second connection pipe.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 5, an embodiment of the present utility model provides a solenoid valve including a pipe 10, the pipe 10 being a straight pipe, a sidewall of the pipe 10 having an opening 11; a valve seat 20 connected to one end of the conduit 10, the valve seat 20 having a valve port 21; a spool part 30 movably provided in the duct 10 to open or close the valve port 21; a retainer ring 40 fixed in the conduit 10, and the retainer ring 40 is positioned at one side of the opening 11 away from the valve port 21; the elastic member 50 is located in the catheter 10, one end of the elastic member 50 abuts against the retainer 40, and the other end of the elastic member 50 abuts against the spool member 30.

In this embodiment, the valve seat 20 has a valve port 21, and the flow medium can pass through the valve port 21. The valve body member 30 is movable in the conduit 10, and controls the opening and closing of the solenoid valve by controlling the opening and closing of the valve port 21. The retainer ring 40 limits the elastic member 50 to the side of the opening away from the valve port 21, so that the impact of the elastic member 50 by the medium flowing in from the opening 11 is avoided, and the problem that the high-pressure medium impacts the elastic member 50 to increase friction between the elastic member 50 and the valve core component 30 is solved. In this embodiment, the material of the retainer ring 40 is stainless steel, and the material of the elastic member 50 is stainless steel.

Wherein, the guide tube 10 is a straight tube, which means that the diameters of the guide tube 10 at different positions along the length direction are equal. When the valve port 21 is opened, the valve port 21 communicates with the opening 11, and the valve port 21 and the opening 11 are oriented perpendicular to each other.

As shown in fig. 1, the catheter 10 is a one-piece stainless steel tube. The guide pipe 10 is integrated and is formed by drawing stainless steel materials, so that the problems that the welding procedures of the welding segmented guide pipe in the prior art are more and the guide pipe is easy to leak are well solved. By the arrangement, the problem of cost increase caused by the fact that processing steps are added due to welding in the prior art is avoided.

As shown in fig. 1 and 2, the retainer ring 40 has an annular structure, and the outer wall of the retainer ring 40 is fixedly connected with the inner wall of the catheter 10. The retainer ring 40 has an annular structure, and one end of the elastic member 50 can be limited on the retainer ring 40, so that the axial pair of the elastic member 50 is limited.

In this embodiment, the outer wall of the collar 40 and the inner wall of the catheter 10 are mated and welded. The outer wall of the check ring 40 is in interference fit with the inner wall of the catheter 10, so that the check ring 40 is compact in installation, difficult to loosen in fixed connection, and the installation accuracy of the check ring 40 is guaranteed.

As shown in fig. 1, one end of the valve seat 20 passes through a retainer ring 40, and an inner wall of the retainer ring 40 is spaced from an outer wall of the valve seat 20. One end of the valve seat 20 passes through the middle of the retainer ring 40, so that space is saved, and the structure of the electromagnetic valve is more compact. The spacing of the inner wall of the retainer 40 from the outer wall of the valve seat 20 ensures that medium can flow between the valve port 21 and the opening 11 in the open condition of the solenoid valve.

As shown in fig. 4 and 5, the retainer 40 has at least one through hole that communicates the side of the retainer 40 facing the valve port 21 with the side facing away from the valve port 21. The through hole communicates one side of the retainer ring 40 facing the valve port 21 with one side of the retainer ring facing away from the valve port 21, medium can flow between the valve port 21 and the opening 11 in the open state of the solenoid valve, opening of the solenoid valve is achieved, and the through hole can reduce resistance of the retainer ring 40 to the medium. Fig. 4 and 5 illustrate two specific embodiments of a retainer ring 40 having a plurality of through holes.

As shown in fig. 3 and 5, the side of the collar 40 has at least one cut surface 41, with a gap between the cut surface 41 and the inner wall of the catheter 10. The gap between the tangential surface 41 and the inner wall of the conduit 10 enables communication between the side of the collar 40 facing the valve port 21 and the side facing away from the valve port 21, allowing medium to flow through the gap. And, the tangential surface 41 of the side surface of the retainer ring 40 makes the installation of the retainer ring 40 more convenient. Fig. 3 and 5 show two embodiments of a collar 40 having a cut surface 41. The cutting surface 41 may be processed by milling or the like.

As shown in fig. 1, the catheter 10 is provided with a flange 12 at the periphery of the opening 11, the flange 12 is positioned in the cavity of the catheter 10, and the retainer ring 40 is in limit fit with the flange 12; the solenoid valve further comprises a first nipple 101, the first nipple 101 penetrating into the opening 11 and being welded with the flange 12. By providing the flange 12, the contact area of the first adapter tube 101 and the catheter tube 10 is increased, so that the welding is more reliable.

Specifically, in the present embodiment, the flange 12 is a straight edge. The end of the first connecting tube 101 is a reduced diameter section, and the reduced diameter section penetrates into the opening 11 and is matched with the flanging 12.

In the prior art, after the first connection pipe 101 and the guide pipe 10 are furnace welded, the solder may infiltrate into the inner wall of the guide pipe 10, resulting in friction with the elastic member 50, affecting the switching valve. In this embodiment, the elastic member is defined on the side of the opening 11 away from the valve port 21 by the retainer ring 40, so that even if solder infiltrates into the inner wall of the catheter 10, the solder does not contact the elastic member 50, and the elastic member 50 is not affected.

As shown in fig. 1, the electromagnetic valve further comprises a static iron core 60, a movable iron core 70, a valve rod 80 and a sealing head 90, wherein the static iron core 60 is fixed in the guide pipe 10, the sealing head 90 seals one end of the guide pipe 10 far away from the valve seat 20, the movable iron core 70 is movably arranged between the static iron core 60 and the sealing head 90, the valve rod 80 penetrates through the static iron core 60 and is connected with the movable iron core 70, and the valve rod 80 is used for pushing the valve core component 30 to move.

When the solenoid valve is energized, the magnetic force of the stationary core 60 attracts the movable core 70, and the movable core 70 pushes the valve rod 80 to move toward the valve core member 30, thereby pushing the valve core member 30 to close the valve port. After the power is off, the elastic member 50 pushes the valve core member 30 to move toward the stationary core 60, thereby opening the valve port 21. A portion of the seal head 90 penetrates into the conduit 10, and in a specific production process, the seal head 90 and the conduit 10 are connected by adopting an interference fit or welding mode. The seal head 90 and the valve rod 80 are made of stainless steel, and the static iron core 60 and the movable iron core 70 are made of soft magnetic stainless alloy.

As shown in fig. 1, the solenoid valve further includes a second connection pipe 102, one end of the second connection pipe 102 penetrates into the hole of the valve seat 20, the second connection pipe 102 is matched with the valve seat 20 and welded, and the second connection pipe 102 is communicated with the valve port 21.

Specifically, the second nipple 102 is coaxial with the catheter 10, and the first nipple 101 is perpendicular to the second nipple 102. In a specific manufacturing process, the material used to manufacture the first adapter tube 101 and the second adapter tube 102 is copper alloy, and the material used to manufacture the valve seat 20 is brass.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

Claims (10)

1. A solenoid valve, comprising:

the guide pipe (10), the guide pipe (10) is a straight pipe, and the side wall of the guide pipe (10) is provided with an opening (11);

a valve seat (20) connected to one end of the conduit (10), the valve seat (20) having a valve port (21);

a valve core member (30) movably provided in the conduit (10) to open or close the valve port (21);

a retainer ring (40) fixed in the conduit (10), wherein the retainer ring (40) is positioned on one side of the opening (11) away from the valve port (21);

and an elastic member (50) positioned in the catheter (10), wherein one end of the elastic member (50) is abutted against the retainer ring (40), and the other end of the elastic member (50) is abutted against the valve core component (30).

2. The solenoid valve according to claim 1, characterized in that said conduit (10) is a one-piece stainless steel tube.

3. The electromagnetic valve according to claim 1, characterized in that the retainer ring (40) is of annular construction, the outer wall of the retainer ring (40) being fixedly connected to the inner wall of the conduit (10).

4. A solenoid valve according to claim 3, characterised in that the outer wall of the collar (40) and the inner wall of the conduit (10) are fitted and welded.

5. A solenoid valve according to claim 3 characterised in that one end of said valve seat (20) passes through said collar (40), the inner wall of said collar (40) being spaced from the outer wall of said valve seat (20).

6. The solenoid valve according to claim 1, characterized in that the collar (40) has at least one through hole which communicates the side of the collar (40) facing the valve port (21) with the side facing away from the valve port (21).

7. The solenoid valve according to claim 1, characterized in that the side of the collar (40) has at least one tangential surface (41), a gap being provided between the tangential surface (41) and the inner wall of the conduit (10).

8. The electromagnetic valve according to claim 1, characterized in that the conduit (10) has a flange (12) at the periphery of the opening (11), the flange (12) being located in the cavity of the conduit (10), the collar (40) being in a positive fit with the flange (12); the electromagnetic valve further comprises a first connecting pipe (101), and the first connecting pipe (101) penetrates the opening (11) and is welded with the flanging (12).

9. The electromagnetic valve according to claim 1, further comprising a stationary core (60), a movable core (70), a valve rod (80) and a closure head (90), wherein the stationary core (60) is fixed in the conduit (10), the closure head (90) seals off one end of the conduit (10) away from the valve seat (20), the movable core (70) is movably arranged between the stationary core (60) and the closure head (90), the valve rod (80) passes through the stationary core (60) and is connected with the movable core (70), and the valve rod (80) is used for pushing the valve core component (30) to move.

10. The solenoid valve according to claim 1, characterized in that it further comprises a second nipple (102), one end of said second nipple (102) penetrating into the hole of said valve seat (20), said second nipple (102) being fitted and welded to said valve seat (20), said second nipple (102) being in communication with said valve port (21).