CN220016093U - Proportional valve - Google Patents

Abstract

The embodiment of the utility model discloses a proportional valve, which comprises a valve body, a coil, an adjusting piece, an elastic piece and a sliding rod, wherein the valve body is provided with a containing cavity and a channel communicated with the containing cavity, the sliding rod is in sliding connection with the cavity wall of the containing cavity so that the sliding rod can move relative to the valve body, the adjusting piece is in threaded connection with the cavity wall of the containing cavity, the elastic piece is elastically abutted between the adjusting piece and the sliding rod so that the elastic piece can push the sliding rod to block the channel, the coil is arranged on the sliding rod, the coil can drive the sliding rod to move close to the adjusting piece to conduct the channel when the coil is communicated, the elastic piece is compressed so that the channel can circulate liquid or gas, the elastic piece can change the elastic property between the adjusting piece and the sliding rod when the adjusting piece is rotated, so that the force of the sliding rod to block the channel is increased, the residual magnetism of the sliding rod can be overcome, and the magnetic stagnation of the proportional valve can be overcome.

Description

Proportional valve

Technical Field

The utility model relates to the field of valves, in particular to a proportional valve.

Background

The proportional valve is a hydraulic valve which converts the input electric signal into force or displacement according to proportion, thus continuously controlling the parameters of pressure, flow and the like. Most of the existing proportional valves use leaf springs or spiral springs for resetting, and elastic performance can be affected due to long-time use and manufacturing force differentiation of the leaf springs or the spiral springs, so that the magnetic hysteresis of the proportional valves is affected.

Disclosure of Invention

Based on this, it is necessary to provide a proportional valve, and the purpose of the present proportional valve is to solve the technical problems that the elastic performance may be affected due to the long-time use and the differentiated manufacturing force of the leaf spring or the coil spring, thereby affecting the magnetic hysteresis of the proportional valve.

The utility model provides a proportional valve, comprising: the device comprises a valve body, a coil, an adjusting piece, an elastic piece and a sliding rod, wherein the valve body is provided with an accommodating cavity and a channel communicated with the accommodating cavity, the sliding rod is in sliding connection with the cavity wall of the accommodating cavity, the adjusting piece is in threaded connection with the cavity wall of the accommodating cavity, the elastic piece is elastically abutted between the adjusting piece and the sliding rod, so that the elastic piece can push the sliding rod to block the channel, the coil is annularly arranged on the sliding rod, and the coil can drive the sliding rod to move close to the adjusting piece to conduct the channel when being electrified, and the elastic piece is compressed;

wherein, rotate the regulating part can change the elastic behavior of elastic part between regulating part and the slide bar.

In one embodiment, the valve body comprises a valve body, a valve seat, a nut, an iron core and a lining, wherein the valve body is connected with the nut, the iron core is arranged in the valve body and is in threaded connection with the nut, the lining is arranged in the valve seat and is connected with the iron core, and the iron core and the lining enclose to form the accommodating cavity.

In one embodiment, the iron core is provided with an avoidance groove, the avoidance groove is used for avoiding the sliding rod, the sliding rod is provided with a mounting groove, one end of the elastic piece is mounted at the bottom of the mounting groove, and the other end of the elastic piece is mounted at the adjusting piece.

In one embodiment, the proportional valve further comprises a first sealing element, the adjusting element is provided with a first sealing groove, and the first sealing element is installed in the first sealing groove and abuts against the cavity wall of the accommodating cavity.

In one embodiment, the slide bar is further provided with an abutment portion capable of abutting against the bushing to be able to limit the travel of the slide bar.

In one embodiment, the valve body comprises a shell, a cover plate and a frame body, wherein the shell, the cover plate and the frame body enclose to form an installation space, and the coil is arranged in the installation space.

In one embodiment, the sliding rod is further provided with a second sealing groove, and the proportional valve further comprises a second sealing piece, and the second sealing piece is installed in the second sealing groove.

In one embodiment, the channel includes a first passageway and a second passageway, the first passageway and the second passageway being in communication, the second seal being for sealing the second passageway.

In one embodiment, the first and second passages are each provided with a connecting groove, the groove walls of which can be connected to an external structural part.

In one embodiment, the proportional valve further comprises a magnetic ring, and the magnetic ring is mounted on the valve body.

The implementation of the embodiment of the utility model has the following beneficial effects:

according to the proportional valve disclosed by the utility model, the sliding rod of the proportional valve is in sliding connection with the cavity wall of the accommodating cavity, so that the sliding rod can move relative to the valve body, the adjusting piece is in threaded connection with the cavity wall of the accommodating cavity, the elastic piece is elastically abutted between the adjusting piece and the sliding rod, so that the elastic piece can push the sliding rod to block the channel, the coil is annularly arranged on the sliding rod, the coil can drive the sliding rod to move close to the adjusting piece to conduct the channel when being electrified, the elastic piece is compressed, so that liquid or gas can circulate in the channel, the elastic performance of the elastic piece between the adjusting piece and the sliding rod can be changed when the adjusting piece is rotated, the force of the sliding rod for blocking the channel is increased, the sliding rod can overcome residual magnetism to block the channel, and therefore the magnetic hysteresis of the proportional valve can be overcome.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Wherein:

FIG. 1 is an isometric view of a proportional valve in one example.

Fig. 2 is a front view of the proportional valve of fig. 1.

Fig. 3 is a cross-sectional view of A-A of the proportional valve of fig. 2.

Reference numerals:

1. a valve body; 11. a valve body; 111. a housing; 112. a cover plate; 113. a frame body; 12. a valve seat; 13. a nut; 14. an iron core; 141. an avoidance groove; 15. a bushing;

2. a coil; 3. an adjusting member; 31. a first seal groove; 4. an elastic member;

5. a slide bar; 51. a mounting groove; 52. an abutting portion; 53. a second seal groove;

6. a first seal; 7. a second seal; 8. a magnetic conductive ring;

100. a receiving chamber; 200. a channel; 201. a first passage; 202. a second passage; 300. a connecting groove; 400. and (5) an installation space.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

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 definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.

Referring to fig. 1 to 3, a proportional valve according to the present utility model will be described. The proportional valve includes: the valve body 1, the coil 2, the regulating part 3, the elastic part 4 and the slide bar 5, the valve body 1 is equipped with and holds the chamber 100, and hold the passageway 200 that the chamber 100 is linked together, slide bar 5 and hold the chamber wall sliding connection in chamber 100, the regulating part 3 holds the chamber wall threaded connection in chamber 100 with holding, the elastic part 4 elasticity butt is between regulating part 3 and slide bar 5, so that the elastic part 4 can promote slide bar 5 to block passageway 200, the coil 2 encircles and locates slide bar 5, circular telegram of coil 2 can drive slide bar 5 and be close to the removal of regulating part 3 in order to switch on passageway 200, the elastic part 4 is compressed.

In particular, the elastic member 4 may be a spring. In the process of moving the coil 2 by electrifying and driving the slide rod 5 to be close to the adjusting piece 3, the slide rod 5 and the adjusting piece 3 can squeeze the elastic piece 4, the elastic piece 4 is elastically deformed, and at the moment, the channel 200 can be conducted. After the coil 2 is powered off, the coil 2 does not generate magnetic force on the sliding rod 5, and under the action of the deformation force of the elastic piece 4, the sliding rod 5 can move away from the adjusting piece 3, and at this time, the channel 200 can be blocked.

In this embodiment, turning the adjustment member 3 can change the elastic properties of the elastic member 4 between the adjustment member 3 and the slide bar 5.

It will be appreciated that the sliding rod 5 of the proportional valve is slidably connected to the wall of the accommodating cavity 100, such that the sliding rod 5 can move relative to the valve body 1, the adjusting member 3 is in threaded connection with the wall of the accommodating cavity 100, the elastic member 4 is elastically abutted between the adjusting member 3 and the sliding rod 5, such that the elastic member 4 can push the sliding rod 5 to block the channel 200, the coil 2 is annularly arranged on the sliding rod 5, the coil 2 is energized to drive the sliding rod 5 to move close to the adjusting member 3 to conduct the channel 200, the elastic member 4 is compressed, such that the channel 200 can circulate liquid or gas, the elastic member 4 can change the elastic property between the adjusting member 3 and the sliding rod 5 by rotating the adjusting member 3, such that the force of the sliding rod 5 to block the channel 200 is increased, such that the sliding rod 5 can overcome the residual magnetism to block the channel 200, and thus the magnetic stagnation of the proportional valve can be overcome.

The hysteresis refers to hysteresis, which refers to a phenomenon in which a ferromagnetic material (e.g., iron) has a magnetization intensity that depends not only on an external magnetic field intensity but also on an original magnetization intensity during magnetization and demagnetization.

Further, the valve body 1 includes a valve body 11, a valve seat 12, a nut 13, an iron core 14 and a bushing 15, the valve body 11 is connected with the nut 13, the iron core 14 is arranged in the valve body 11 and is in threaded connection with the nut 13, the bushing 15 is arranged in the valve seat 12 and is connected with the iron core 14, and the iron core 14 and the bushing 15 enclose to form a containing cavity 100.

By providing the iron core 14 and the bush 15 for connection, the iron core 14 is screwed with the nut 13, and the bush 15 is screwed with the valve seat 12, the valve body 11 and the valve seat 12 can be assembled. In addition, the valve body 11 and the valve seat 12 are connected in an assembled manner, so that the adjusting piece 3, the elastic piece 4 and the sliding rod 5 can be conveniently installed.

Of course, in other embodiments, the valve body 11, the valve seat 12, the nut 13, the core 14, and the bushing 15 may be integrally provided.

In one embodiment, as shown in fig. 3, the iron core 14 is provided with a avoiding groove 141, the avoiding groove 141 is used for avoiding the sliding rod 5, the sliding rod 5 is provided with a mounting groove 51, one end of the elastic member 4 is mounted at the bottom of the mounting groove 51, and the other end is mounted at the adjusting member 3.

Specifically, in the process that the coil 2 is electrified to drive the sliding rod 5 to move close to the adjusting piece 3, the avoidance groove 141 can avoid the sliding rod 5, so that interference between the sliding rod 5 and the adjusting piece 3 is avoided, and the sliding rod 5 can be smoothly conducted to the channel 200. Moreover, in the moving process of the coil 2, the slide rod 5 can be driven to move close to the adjusting piece 3 by electrifying, the slide rod 5 and the adjusting piece 3 extrude the elastic piece 4, so that the elastic piece 4 can be elastically deformed, one end of the elastic piece 4 is arranged at the bottom of the mounting groove 51, the other end of the elastic piece is arranged at the adjusting piece 3, and the elastic piece 4 is abutted with the groove wall of the mounting groove 51, so that the elastic piece 4 cannot be bent when being elastically deformed, and the elastic performance of the elastic piece 4 cannot be influenced.

In the present embodiment, the slide bar 5 is further provided with an abutment portion 52, and the abutment portion 52 can abut against the bush 15 to be able to limit the movement stroke of the slide bar 5.

Specifically, in the process that the coil 2 can drive the slide rod 5 to move close to the adjusting piece 3 when being electrified, the slide rod 5 is provided with the abutting portion 52, so that the abutting portion 52 can abut against the bushing 15, and the moving distance of the slide rod 5 can be limited, that is, the slide rod 5 can open the channel 200.

In an embodiment, as further shown in fig. 3, the proportional valve further comprises a first sealing member 6, the adjusting member 3 is provided with a first sealing groove 31, and the first sealing member 6 is mounted in the first sealing groove 31 and abuts against the cavity wall of the accommodating cavity 100. In particular, the first seal 6 may be a rubber structure having elasticity. Since the accommodation chamber 100 communicates with the passage 200, the first seal 6 is provided so that the gas in the passage 200 can be prevented from flowing out of the accommodation chamber 100.

In an embodiment, as further shown in fig. 3, the valve body 11 includes a housing 111, a cover plate 112, and a frame 113, where the housing 111, the cover plate 112, and the frame 113 enclose an installation space 400, and the coil 2 is disposed in the installation space 400. Since the coil 2 is magnetically energized, the coil 2 is provided in the installation space 400 so that the influence of the coil 2 on the external element can be avoided.

In one embodiment, continuing to refer to fig. 3, the slide bar 5 is further provided with a second seal groove 53, and the proportional valve further comprises a second seal 7, the second seal 7 being mounted in the second seal groove 53. In particular, the second seal 7 may be a rubber structure having elasticity. By providing the second seal 7, the slide bar 5 is enabled to improve the sealability of the blocking channel 200.

In the present embodiment, the passage 200 includes a first passage 201 and a second passage 202, the first passage 201 and the second passage 202 are in communication, and the second seal 7 is used to seal the second passage 202. An external gas source or liquid enters from the first passageway 201 and then flows out from the second passageway 202, and the second seal 7 can seal the second passageway 202, thereby blocking the passage 200 from gas or liquid.

Further, the first passage 201 and the second passage 202 are each provided with a connection groove 300, and the groove wall of the connection groove 300 can be connected to an external structural member.

Specifically, the groove wall of the connecting groove 300 is in interference fit with the pipeline, and the pipeline is communicated with the external structural component and the air source component. In this way, the gas source is enabled to communicate with the first passageway 201 and the external structural member is enabled to communicate with the second passageway 202.

It should be added that the joint between the groove wall of the connecting groove 300 and the pipeline is coated with sealant, so as to ensure the tightness between the connecting groove 300 and the pipeline.

In an embodiment, as further shown in fig. 3, the proportional valve further includes a magnetic conductive ring 8, and the magnetic conductive ring 8 is mounted on the valve body 1.

Specifically, the magnetic conductive ring 8 is mounted between the frame 113 and the bushing 15. In this way, the magnetic conductive ring 8 is prevented from directly contacting the coil 2. The magnetically conductive ring 8 can act as a magnetic conductor, i.e. to increase the magnetic flux of the coil 2 acting on the slide bar 5.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims (10)

1. A proportional valve, characterized in that it comprises: the device comprises a valve body, a coil, an adjusting piece, an elastic piece and a sliding rod, wherein the valve body is provided with an accommodating cavity and a channel communicated with the accommodating cavity, the sliding rod is in sliding connection with the cavity wall of the accommodating cavity, the adjusting piece is in threaded connection with the cavity wall of the accommodating cavity, the elastic piece is elastically abutted between the adjusting piece and the sliding rod, so that the elastic piece can push the sliding rod to block the channel, the coil is annularly arranged on the sliding rod, and the coil can drive the sliding rod to move close to the adjusting piece to conduct the channel when being electrified, and the elastic piece is compressed;

wherein, rotate the regulating part can change the elastic behavior of elastic part between regulating part and the slide bar.

2. The proportioning valve of claim 1 wherein said valve body includes a valve body, a valve seat, a nut, an iron core and a bushing, said valve body being connected to said nut, said iron core being disposed within said valve body and being threadably connected to said nut, said bushing being disposed within said valve seat and being connected to said iron core, said iron core and said bushing surrounding said receiving cavity.

3. The proportional valve of claim 2, wherein the iron core is provided with an avoidance groove for avoiding the slide bar, the slide bar is provided with a mounting groove, one end of the elastic member is mounted at the bottom of the mounting groove, and the other end of the elastic member is mounted at the regulating member.

4. A proportional valve as claimed in claim 3 further comprising a first seal, the regulator being provided with a first seal groove, the first seal being mounted in the first seal groove and abutting a wall of the receiving chamber.

5. The proportional valve of claim 2, wherein the slide bar is further provided with an abutment portion that can abut the bushing to enable limiting a moving stroke of the slide bar.

6. The proportioning valve of claim 2 wherein said valve body includes a housing, a cover plate and a frame, said housing, said cover plate and said frame enclosing a mounting space, said coil being disposed within said mounting space.

7. The proportional valve of claim 1 wherein the slide bar is further provided with a second seal groove, the proportional valve further comprising a second seal mounted within the second seal groove.

8. The proportioning valve of claim 7 wherein said passage includes a first passage and a second passage, said first passage and said second passage being in communication, said second seal being for sealing said second passage.

9. The proportioning valve of claim 8 wherein said first passageway and said second passageway are each provided with a connecting slot, the walls of said connecting slots being connectable to an external structural member.

10. The proportional valve of claim 1 further comprising a magnetically permeable ring mounted to the valve body.