CN210510459U

CN210510459U - Proportional valve

Info

Publication number: CN210510459U
Application number: CN201921406189.9U
Authority: CN
Inventors: 毛旭东
Original assignee: Ningbo Henderson Automation Industry Co ltd
Current assignee: Ningbo Henderson Automation Industry Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-05-12
Anticipated expiration: 2029-08-28

Abstract

The utility model discloses a proportional valve, which comprises a valve body, import and export have been seted up on the valve body, the import with the export is linked together through fluid passage, install the valve gap on the valve body, install the sleeve pipe on the valve gap, the sheathed tube top is fixed with solid core, the intraductal activity of cover is equipped with moves the iron core, move the iron core the bottom with fluid passage cooperatees, gu the iron core with move and install first spring between the iron core, sleeve pipe outside cover is equipped with the coil, gu the bottom of iron core is formed with the bulge loop along axial downwardly extending, the tip inside wall of bulge loop is equipped with the magnetic force conical surface, move the top lateral wall of iron core be equipped with the suction conical surface of magnetic force conical surface looks adaptation, the suction conical surface upwards extends to along the axial in the bulge loop. The utility model discloses possessed simple structure, moved the iron core reaction fast, advantage that work efficiency is high.

Description

Proportional valve

Technical Field

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

Background

The proportional valve is a novel hydraulic control device. On the common pressure valve, flow valve and direction valve, the proportional electromagnet is used to replace the original control part, and the pressure, flow or direction of oil flow is controlled remotely according to the input electric signal. The existing proportional valve is generally composed of a coil, a fixed iron core, a compression spring, a movable iron core, a valve body and the like. The working principle is that when the coil is not electrified, the sealing head of the fixed iron core closes the valve under the action of the compression spring and the backpressure of the medium at the air inlet of the valve. When the coil is electrified, the end face of the fixed iron core generates electromagnetic force to overcome the counter-acting force of the back pressure of the compression spring and the medium at the air inlet of the valve, so that the movable iron core moves towards the fixed iron core until the end face of the movable iron core is attracted with the end face of the fixed iron core, and the valve is in an open state; however, in the prior art, the electromagnetic force generated by the end face of the fixed iron core is small, the pressure of the compression spring is difficult to overcome, and the reaction of the movable iron core is slow, so that the opening time of the valve is long, and the working efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide a proportional valve, its simple structure through the terminal surface structure who decides the iron core of improvement, the increase electromagnetic force overcomes spring pressure, makes the movable iron core reaction quick, improves work efficiency.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a proportional valve, includes the valve body, import and export have been seted up on the valve body, the import with the export is linked together through fluid passage, install the valve gap on the valve body, install the sleeve pipe on the valve gap, the sheathed tube top is fixed with decides the iron core, the intraductal activity of cover is equipped with moves the iron core, move the iron core the bottom with fluid passage cooperatees, decide the iron core with move and install first spring between the iron core, sleeve pipe outside cover is equipped with the coil, the bottom of deciding the iron core is formed with the bulge loop along axial downwardly extending, the tip inside wall of bulge loop is equipped with the magnetic force conical surface, the top lateral wall of moving the iron core be equipped with the suction conical surface of magnetic force conical surface looks adaptation, the suction conical surface upwards extends to along the axial in.

Furthermore, a top pin is installed in the middle of the fixed iron core, the top end of the top pin is in threaded sealing connection with the fixed iron core, and the bottom end of the top pin penetrates through the fixed iron core and abuts against the top end of the first spring.

Furthermore, a first mounting hole is formed in the top end of the movable iron core, a second mounting hole is formed in the bottom end of the movable iron core, the bottom end of the first spring abuts against the bottom surface of the first mounting hole, a sealing plug is movably arranged in the second mounting hole and matched with the fluid channel, a second spring is further arranged in the second mounting hole, one end of the second spring abuts against the bottom surface of the second mounting hole, and the other end of the second spring abuts against the sealing plug.

Furthermore, an embedding sleeve is installed in the first mounting hole, the embedding sleeve is sleeved on the outer side of the first spring, and the top end of the embedding sleeve radially extends out of the first mounting hole.

Furthermore, an embedding ring is embedded in the orifice of the second mounting hole, the sealing plug is in a step shape, the bottom surface of the sealing plug penetrates through the embedding ring to be matched with the fluid channel, and the step surface of the sealing plug is abutted to the embedding ring.

Furthermore, a balance channel communicated with the first mounting hole and the second mounting hole is formed in the movable iron core.

Furthermore, the valve cover is in threaded connection with the valve body, and the valve cover is in riveted connection with the bottom end of the sleeve.

Furthermore, the coil is electrically connected with a wiring terminal, the coil is installed on the outer side of the sleeve through a clamp spring, and the clamp spring is sleeved on the top end of the fixed iron core.

The utility model has the advantages that: the bottom end of the fixed iron core extends downwards along the axial direction to form a convex ring, the inner side wall of the end part of the convex ring is provided with a magnetic force conical surface, the side wall of the top end of the movable iron core is provided with a suction conical surface matched with the magnetic force conical surface, the suction conical surface extends upwards along the axial direction to the convex ring, after the coil is electrified, the magnetic force conical surface generates electromagnetic force, the movable iron core moves towards the fixed iron core until the magnetic force conical surface of the movable iron core is attracted with the suction conical surface of the fixed iron core, compared with the electromagnetic force generated by the end surface of the fixed iron core in the prior art, the conical surface matching also has a certain guiding effect, the action of the movable iron core is faster and more stable; generally, the utility model discloses possessed simple structure, moved the iron core reaction fast, advantage that work efficiency is high.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged schematic view at a in fig. 1.

Fig. 3 is an enlarged schematic view at B in fig. 1.

Shown in the figure: 1-a valve body; 1.1-inlet; 1.2-outlet; 1.3-fluid channels; 2-valve cover; 3-sleeving a pipe; 4-fixing iron core; 4.1-convex ring; 4.2-magnetic conical surface; 5-a movable iron core; 5.1-suction cone; 5.2-first mounting hole; 5.3-second mounting hole; 5.4-balance channel; 6-a first spring; 7-a coil; 7.1-connecting terminal; 8-knock pin; 9-a sealing plug; 10-a second spring; 11-embedding a sleeve; 12-ring inlaying; 13-a clamp spring; 14-a first sealing ring; 15-a second sealing ring; 16-third sealing ring.

Detailed Description

For a more intuitive and complete understanding of the technical solution of the present invention, the following non-limiting characteristic description is now performed by combining the drawings of the present invention:

as shown in fig. 1 to 3, a proportional valve, including a valve body 1, an inlet 1.1 and an outlet 1.2 have been opened on the valve body 1, the inlet 1.1 is linked together with the outlet 1.2 through a fluid passage 1.3, a valve cover 2 is installed on the valve body 1, a sleeve 3 is installed on the valve cover 2, a fixed iron core 4 is fixed on the top of the sleeve 3, a movable iron core 5 is movably installed in the sleeve 3, the bottom end of the movable iron core 5 is matched with the fluid passage 1.3, a first spring 6 is installed between the fixed iron core 4 and the movable iron core 5, a coil 7 is sleeved on the outer side of the sleeve 3, the bottom end of the fixed iron core 4 extends downwards along the axial direction to form a convex ring 4.1, the inner side wall of the end portion of the convex ring 4.1 is provided with a magnetic conical surface 4.2, the side wall of the top end of the movable iron core 5 is provided with a suction force 5.1 adapted.

A through hole penetrating through the fixed iron core is formed in the middle of the fixed iron core 4, the top end of the pin 8 is in threaded fit connection with the inner wall of the through hole, the bottom end of the ejector pin 8 penetrates through the through hole to abut against the top end of the first spring 6, the bottom end of the ejector pin 8 is in sliding fit with the inner wall of the through hole, and a first sealing ring 14 is sleeved on the outer side of the bottom end of the ejector pin 8, so that the ejector pin 8 is in sealing fit with the through hole, and fluid in the valve body; specifically, the tightness degree of the ejector pin 8 is adjusted, the pretightening force of the first spring 6 is changed, the pressing degree of the movable iron core 5 on the fluid channel 1.3 is controlled, when fluid with high pressure is introduced into the valve body 1, the ejector pin 8 can be screwed into the fluid channel to increase the pretightening force of the first spring 6, otherwise, when fluid with low pressure is introduced into the valve body 1, the ejector pin 8 can be screwed out to reduce the pretightening force of the first spring 6, the pretightening force of the first spring 6 is kept within a reasonable range, the pressing degree of the movable iron core 5 on the fluid channel 1.3 is kept at a better position, the speed of the movable iron core 5 when the fluid channel 1.3 is opened or closed is ensured to be high, and the working efficiency is improved.

First mounting hole 5.2 has been seted up on 5 tops of moving iron core, second mounting hole 5.3 has been seted up to 5 bottoms of moving iron core, the bottom of first spring 6 offsets with the bottom surface of first mounting hole 5.2, second mounting hole 5.3 internalization is equipped with sealing plug 9, sealing plug 9 cooperatees with fluid passage 1.3, still be equipped with second spring 10 in the second mounting hole 5.3, the one end of second spring 10 offsets with the bottom surface of second mounting hole 5.3, the other end and the sealing plug 9 of second spring 10 offset.

Install in the first mounting hole 5.2 and inlay cover 11, inlay the cover 11 cover and locate the 6 outsides of first spring, inlay 11 tops of cover and radially extend first mounting hole 5.2, after fixed iron core 4 got electric, when moving iron core 5 towards fixed iron core 4 actuation, inlay cover 11 and can at first with the terminal surface contact of fixed iron core 4, play the effect of shock attenuation buffering, avoid moving iron core 5 direct towards fixed iron core 4, increase life.

The inlaid ring 12 is embedded in the orifice of the second mounting hole 5.3, the sealing plug 9 is in a step shape, the bottom surface of the sealing plug 9 penetrates through the inlaid ring 12 to be matched with the fluid channel 1.3, the step surface of the sealing plug 9 is abutted to the inlaid ring 12, the sealing plug 9 is convenient to mount, the second spring 10 enables the sealing plug 9 to always have force for pressing the fluid channel 1.3, the coil 7 is guaranteed to be always in a closed state when not powered, and the air tightness is improved.

A balance channel 5.4 communicated with the first mounting hole 5.2 and the second mounting hole 5.3 is formed in the movable iron core 5; the pressure at each position in the sleeve 3 is ensured to be equal, the moving iron core 5 is convenient to move, the moving resistance of the moving iron core 5 is reduced, and the moving iron core 5 is ensured to move quickly and stably.

The valve cover 2 is in threaded connection with the valve body 1, and a second sealing ring 15 is arranged between the valve cover 2 and the valve body 1, so that the sealing property of the valve body 1 is ensured; the valve cover 2 is connected with the bottom end of the sleeve 3 in a riveting mode, and the movable iron core 5 is sleeved with two third sealing rings 16 to guarantee that the outer side wall of the movable iron core 5 is in sealing fit with the inner side wall of the sleeve 3.

The coil 7 is electrically connected with a wiring terminal 7.1, so that whether the coil 7 is electrified or not can be conveniently controlled; coil 7 is installed in the sleeve pipe 3 outside through jump ring 13, and jump ring 13 cover is located and is fixed 4 tops of iron core, makes things convenient for the installation of coil 7.

The utility model discloses a concrete theory of operation as follows: fluid is introduced from the inlet 1.1, the ejector pin 8 is adjusted in advance, so that the pretightening force of the first spring 6 is reasonable, when the coil 7 is not electrified, the sealing plug 9 on the movable iron core 5 is pressed towards the fluid channel 1.3 under the pressure of the first spring 6 and the second spring 10, the fluid channel 1.3 is kept closed, the fluid cannot flow to the outlet 1.2, and the proportional valve is in a closed state; when the coil 7 is electrified, the magnetic conical surface 4.2 of the fixed iron core 4 generates electromagnetic force, the movable iron core 5 overcomes the pressure of the first spring 6, the movable iron core 5 slides upwards, in the sliding process, the conical surfaces are matched to play a certain guiding role until the magnetic conical surface 4.2 and the suction conical surface 5.1 are attracted, at the moment, the sealing plug 9 is separated from the fluid channel 1.3 to generate a gap, the fluid flows to the outlet, and the proportional valve is in an open state.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. The utility model provides a proportional valve, includes valve body (1), import (1.1) and export (1.2) have been seted up on valve body (1), import (1.1) with export (1.2) are linked together through fluid passage (1.3), install valve gap (2) on valve body (1), install sleeve pipe (3) on valve gap (2), the top of sleeve pipe (3) is fixed with decides iron core (4), sleeve pipe (3) internalization is equipped with movable iron core (5), the bottom of movable iron core (5) with fluid passage (1.3) cooperate, decide iron core (4) with install first spring (6) between movable iron core (5), sleeve pipe (3) outside cover is equipped with coil (7), its characterized in that: the bottom of deciding iron core (4) is formed with bulge loop (4.1) along axial downwardly extending, the tip inside wall of bulge loop (4.1) is equipped with magnetic force conical surface (4.2), the top lateral wall of moving iron core (5) be equipped with suction conical surface (5.1) of magnetic force conical surface (4.2) looks adaptation, suction conical surface (5.1) upwards extend along the axial in bulge loop (4.1).

2. A proportioning valve according to claim 1 wherein: decide the middle knock pin (8) of installing of iron core (4), knock pin (8) top with decide iron core (4) thread sealing connection, knock pin (8) bottom is passed decide iron core (4) with first spring (6) top offsets.

3. A proportioning valve according to claim 2 wherein: the movable iron core (5) is provided with a first mounting hole (5.2) at the top end, the movable iron core (5) is provided with a second mounting hole (5.3) at the bottom end, the bottom end of the first spring (6) is abutted to the bottom surface of the first mounting hole (5.2), a sealing plug (9) is movably arranged in the second mounting hole (5.3), the sealing plug (9) is matched with the fluid channel (1.3), a second spring (10) is further arranged in the second mounting hole (5.3), one end of the second spring (10) is abutted to the bottom surface of the second mounting hole (5.3), and the other end of the second spring (10) is abutted to the sealing plug (9).

4. A proportioning valve according to claim 3 wherein: install in first mounting hole (5.2) and inlay cover (11), inlay cover (11) cover and locate first spring (6) outside, inlay cover (11) top and radially extend first mounting hole (5.2).

5. A proportioning valve according to claim 4 wherein: an embedding ring (12) is embedded in the orifice of the second mounting hole (5.3), the sealing plug (9) is in a step shape, the bottom surface of the sealing plug (9) penetrates through the embedding ring (12) to be matched with the fluid channel (1.3), and the step surface of the sealing plug (9) is abutted against the embedding ring (12).

6. A proportioning valve according to claim 5 wherein: and a balance channel (5.4) communicated with the first mounting hole (5.2) and the second mounting hole (5.3) is formed in the movable iron core (5).

7. The proportioning valve of claim 6 wherein: the valve cover (2) is in threaded connection with the valve body (1), and the valve cover (2) is in riveted connection with the bottom end of the sleeve (3).

8. The proportioning valve of claim 7 wherein: the coil (7) is electrically connected with a wiring terminal (7.1), the coil (7) is installed on the outer side of the sleeve (3) through a clamp spring (13), and the clamp spring (13) is sleeved on the top end of the fixed iron core (4).