CN219300038U

CN219300038U - Normally closed valve

Info

Publication number: CN219300038U
Application number: CN202222570534.0U
Authority: CN
Inventors: 郭建强; 郝天赐; 胡聪琪; 张盛达
Original assignee: Ningbo Tuopu Group Co Ltd
Current assignee: Ningbo Tuopu Group Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-07-04
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to a normally closed valve, which comprises a valve seat, wherein a valve cavity is arranged in the valve seat, a piston is arranged in the valve cavity, a valve hole is vertically formed in the middle of the piston, an air inlet is formed in the side wall of the lower part of the valve seat, an air outlet end cover is arranged at the bottom of the valve seat, an air outlet is formed in the air outlet end cover, a piston spring is arranged between the piston and the air outlet end cover in the valve cavity, a sleeve is fixedly connected to the valve seat, a movable iron core and a static iron core are respectively arranged in the sleeve, a return spring is arranged between the movable iron core and the static iron core, the lower part of the movable iron core is inserted into the valve cavity, a plug matched with an upper port of the valve hole is arranged at the lower end of the movable iron core, and a coil assembly is sleeved outside the sleeve. The utility model designs the original integral valve seat into the valve seat and the air outlet end cover to form a split structure, thereby greatly simplifying the processing difficulty, simultaneously eliminating the valve cover and reducing the cost.

Description

Normally closed valve

Technical Field

The utility model relates to the technical field of normally-closed valves, in particular to a normally-closed valve.

Background

Various solenoid valves are often used in thermal management systems to facilitate control and regulation of the fluid medium. The normally closed valve is one of common electromagnetic valves and comprises a valve seat, a piston, a valve cover and a coil assembly, wherein the valve cover is arranged at the upper end of the valve seat, a sleeve is fixed on the valve cover, a movable iron core and a static iron core are respectively arranged in the sleeve, the coil assembly is arranged outside the sleeve, an air outlet is formed in the bottom of the valve seat, and an air inlet is formed in the side edge of the lower part of the valve seat.

At present, when the piston is installed, the piston is placed from an upper port of the valve seat, and then a valve cover is installed at the upper end of the valve seat, so that the piston can only move up and down in a valve cavity of the valve seat, the existing valve seat is of an integral structure, an air outlet is directly formed in the bottom of the valve seat, the air outlet is provided with an arc design, and the upper end of the air outlet is further provided with a lantern ring for limiting a piston spring, so that the whole valve seat is relatively difficult to process.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide the normally closed valve, the original integral valve seat is designed into a split structure formed by two parts of the valve seat and the air outlet end cover, the processing difficulty is greatly simplified, the valve cover is eliminated, and the cost is reduced.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a normally closed valve, including the disk seat, the disk seat inside be provided with the valve pocket, install the piston in this valve pocket, the vertical valve pocket of having seted up in piston middle part, the lateral wall of disk seat lower part seted up the air inlet, this disk seat bottom is installed the end cover of giving vent to anger, the end cover of giving vent to anger on seted up the gas outlet, the valve pocket in be located and install piston spring between piston and the end cover of giving vent to anger, the disk seat on fixedly connected with sleeve pipe, this sleeve pipe is inside installs respectively and moves iron core and quiet iron core, move and install the return spring between iron core, this moves the iron core lower part and insert in the valve pocket, move iron core lower extreme be provided with the end cap with valve pocket upper end complex, the sleeve pipe overcoat be equipped with the coil assembly, valve pocket upper portion and piston upper end cooperation form a cavity.

As a supplement to the technical scheme of the utility model, the bottom of the valve seat is provided with a mounting hole, and the mounting hole is fixedly connected or limited and connected with the air outlet end cover.

As a supplement to the technical scheme of the utility model, the outer side wall of the air outlet end cover is provided with a circle of outer edges matched with the openings of the mounting holes, and the outer edges are fixed with the valve seat by welding.

The valve seat is arranged in the valve mounting seat, a circle of limiting part is arranged at the upper end of the valve seat, and the limiting part is buckled at the upper end of the valve mounting seat.

As a supplement to the technical scheme of the utility model, a threaded connection part is arranged between the upper part of the valve seat and the air inlet and is in threaded connection with the inner wall of the valve mounting seat.

As a supplement to the technical scheme of the utility model, a first sealing ring is arranged between the limiting part and the upper end of the valve mounting seat, a second sealing ring is embedded and arranged on the outer wall of the lower part of the valve seat, and the air inlet is positioned between the first sealing ring and the second sealing ring.

As a supplement to the technical scheme of the utility model, the outer wall of the upper part of the valve seat is embedded and provided with a first sealing ring, the outer wall of the lower part of the valve seat is embedded and provided with a second sealing ring, and the air inlet is positioned between the first sealing ring and the second sealing ring.

As a supplement to the technical scheme of the utility model, a sealing gasket is embedded and arranged at the opening of the upper end of the valve hole, and a through hole communicated with the valve hole is formed in the sealing gasket.

As a supplement to the technical scheme of the utility model, the upper end of the air outlet end cover is provided with a lantern ring at the outer side of the upper port of the valve hole, and the lower part of the return spring is sleeved on the lantern ring.

As a supplement to the technical scheme of the utility model, the static iron core is fixed on the coil component through a combination screw.

As a supplement to the technical scheme of the utility model, the plug is cylindrical, and the lower end of the plug is provided with a conical part.

The beneficial effects are that: the utility model relates to a normally closed valve, which is characterized in that an original integral valve seat is designed into a valve seat and an air outlet end cover to form a split structure, so that the processing difficulty is greatly simplified, a valve cover is eliminated, and the cost is reduced; when the piston is installed, the piston is firstly placed in the valve cavity of the valve seat, and then the air outlet end cover is installed, so that the piston can only move up and down in the valve cavity. The utility model has the advantages of simple structure, convenient use, low manufacturing cost, etc.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a valve seat according to the present utility model;

FIG. 3 is a schematic view of the structure of an outlet end cap according to the present utility model;

FIG. 4 is a schematic view of the structure of the moving core according to the present utility model;

fig. 5 is a schematic structural view of a different scheme of the present utility model for providing the first seal ring and the second seal ring.

The diagram is: 1. valve seat, 2, piston, 3, valve hole, 4, end cover of giving vent to anger, 5, piston spring, 6, sleeve pipe, 7, return spring, 8, movable core, 9, quiet core, 10, coil assembly, 11, first sealing washer, 12, second sealing washer, 13, valve mount pad, 14, air inlet, 15, gas outlet, 16, end cap, 17, sealing pad, 18, mounting hole, 19, combination screw, 20, outer fringe, 21, spacing portion, 22, threaded connection portion, 23, lantern ring, 24, conical portion, 25, cavity.

Detailed Description

The utility model will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present utility model, and such equivalents are intended to fall within the scope of the claims appended hereto.

The embodiment of the utility model relates to a normally closed valve, as shown in fig. 1-5, which comprises a valve seat 1, wherein a valve cavity is arranged in the valve seat 1, a piston 2 is arranged in the valve cavity, a valve hole 3 is vertically formed in the middle of the piston 2, an air inlet 14 is formed in the side wall of the lower part of the valve seat 1, an air outlet end cover 4 is arranged at the bottom of the valve seat 1, an air outlet 15 is formed in the air outlet end cover 4, a piston spring 5 is arranged between the piston 2 and the air outlet end cover 4 in the valve cavity, a sleeve 6 is fixedly connected to the valve seat 1, a movable iron core 8 and a static iron core 9 are respectively arranged in the sleeve 6, a return spring 7 is arranged between the movable iron core 8 and the static iron core 9, the lower part of the movable iron core 8 is inserted into the valve cavity, a plug 16 matched with the upper port of the valve hole 3 is arranged at the lower end of the movable iron core 8, a coil assembly 10 is sleeved outside the sleeve 6, and a cavity 25 is formed by matching the upper part of the valve cavity and the upper part of the piston 2.

The original integral valve seat is designed into the valve seat 1 and the air outlet end cover 4 which form a split structure, so that the processing difficulty is greatly simplified, the valve cover is eliminated, and the cost is reduced; when in installation, the piston 2 is firstly placed in the valve cavity of the valve seat 1, and then the air outlet end cover 4 is arranged, so that the piston 2 can only move up and down in the valve cavity.

The bottom of the valve seat 1 is provided with a mounting hole 18, and the mounting hole 18 is fixedly connected or limited and connected with the air outlet end cover 4.

The outer side wall of the air outlet end cover 4 is provided with a circle of outer edge 20 matched with the opening of the mounting hole 18, and the outer edge 20 is fixed with the valve seat 1 by welding.

The valve seat 1 is arranged in the valve mounting seat 13, a circle of limiting part 21 is arranged at the upper end of the valve seat 1, and the limiting part 21 is buckled at the upper end of the valve mounting seat 13, so that the position limitation of the valve seat 1 is realized.

The upper part of the valve seat 1 is provided with a threaded connection part 22 between the limiting part 21 and the air inlet 14, and the threaded connection part 22 is in threaded connection with the inner wall of the valve mounting seat 13, so that the installation is convenient.

There are two arrangements of the first seal ring 11 and the second seal ring 12.

As shown in fig. 5, a first sealing ring 11 is installed between the limiting part 21 and the upper end of the valve mounting seat 13, a second sealing ring 12 is installed on the outer wall of the lower part of the valve seat 1 in an embedded manner, and the air inlet 14 is located between the first sealing ring 11 and the second sealing ring 12.

The other is shown in fig. 1, the outer wall of the upper part of the valve seat 1 is embedded and provided with a first sealing ring 11, the outer wall of the lower part of the valve seat 1 is embedded and provided with a second sealing ring 12, and the air inlet 14 is positioned between the first sealing ring 11 and the second sealing ring 12.

A sealing gasket 17 is embedded and arranged at the opening of the upper end of the valve hole 3, and a through hole communicated with the valve hole 3 is formed in the sealing gasket 17; the plug 16 is cylindrical, a conical part 24 is arranged at the lower end of the plug 16, and the upper port of the through hole is plugged through the conical part 24. The conical portion 24 is shaped to effectively block the upper port of the through hole.

The upper end of the air outlet end cover 4 is positioned at the outer side of the upper port of the valve hole 3, a lantern ring 23 is arranged, and the lower part of the return spring 7 is sleeved on the lantern ring 23; the collar 23 restricts the position of the lower part of the return spring 7, thereby reducing the position shake of the return spring 7.

The static iron core 9 is fixed on the coil assembly 10 through a combination screw 19.

The air inlet 14 of the valve seat 1 is in air, the air outlet 15 is out, under normal state, the lower end of the piston 2 is sealed with the air outlet 15, the plug 16 at the lower end of the movable iron core 8 is used for plugging the through hole of the sealing pad 17, thereby sealing the upper port of the valve hole 3. When the valve is required to be opened, the coil assembly 10 is electrified to generate a magnetic field, so that the movable iron core 8 moves upwards, the plug 16 at the lower end of the movable iron core 8 is separated from the through hole of the sealing gasket 17, the upper port of the valve hole 3 is opened, the cavity 25 is communicated with the outside through the valve hole 3 to form low pressure, the valve cavity for the piston 2 to move in the valve seat 1 is in a high-pressure state, and the piston 2 is forced to move upwards under the action of the high-pressure and low-pressure and the elastic force of the piston spring 5, so that the lower end of the piston 2 is separated from the air outlet 15; when the coil assembly 10 is not needed to be used, the coil assembly 10 is powered off, the movable iron core 8 moves downwards by virtue of the return spring 7, the plug 16 at the lower end of the movable iron core 8 plugs the through hole of the sealing gasket 17 to seal the upper port of the valve hole 3, and meanwhile, the movable iron core 2 brings the piston 2 downwards together, and the lower end of the piston 2 plugs the air outlet 15.

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.

The foregoing has outlined a normally closed valve provided herein in detail and embodiments thereof have been presented by way of example only to assist in the understanding of the method and core concepts of the present application; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

Claims

1. A normally closed valve comprising a valve seat (1), characterized in that: valve pocket (1) inside be provided with valve pocket, install piston (2) in this valve pocket, piston (2) middle part vertically seted up valve pocket (3), the lateral wall of valve pocket (1) lower part seted up air inlet (14), this valve pocket (1) bottom install air outlet end cover (4), air outlet end cover (4) on seted up gas outlet (15), valve pocket in be located piston (2) and air outlet end cover (4) between install piston spring (5), valve pocket (1) on fixedly connected with sleeve pipe (6), this sleeve pipe (6) inside install respectively and move iron core (8) and quiet iron core (9), move and install return spring (7) between iron core (8) and quiet iron core (9), this moves iron core (8) lower part and insert in the valve pocket, move iron core (8) lower extreme be provided with valve pocket (3) upper end port complex end cap (16), sleeve pipe (6) overcoat be equipped with coil assembly (10), valve pocket upper portion and piston (2) upper end cooperation form a cavity (25).

2. A normally closed valve according to claim 1, wherein: the bottom of the valve seat (1) is provided with a mounting hole (18), and the mounting hole (18) is fixedly connected or in limiting connection with the air outlet end cover (4).

3. A normally closed valve according to claim 2, wherein: the outer side wall of the air outlet end cover (4) is provided with a circle of outer edge (20) matched with the opening of the mounting hole (18), and the outer edge (20) and the valve seat (1) are fixed by welding.

4. A normally closed valve according to claim 1, wherein: the valve seat is characterized by further comprising a valve mounting seat (13), wherein the valve seat (1) is mounted in the valve mounting seat (13), a circle of limiting part (21) is arranged at the upper end of the valve seat (1), and the limiting part (21) is buckled at the upper end of the valve mounting seat (13).

5. A normally-closed valve according to claim 4, wherein: a threaded connection part (22) is arranged between the limit part (21) and the air inlet (14) at the upper part of the valve seat (1), and the threaded connection part (22) is in threaded connection with the inner wall of the valve mounting seat (13).

6. A normally-closed valve according to claim 4, wherein: the valve is characterized in that a first sealing ring (11) is arranged between the limiting part (21) and the upper end of the valve mounting seat (13), a second sealing ring (12) is embedded and arranged on the outer wall of the lower part of the valve seat (1), and the air inlet (14) is arranged between the first sealing ring (11) and the second sealing ring (12).

7. A normally closed valve according to claim 1, wherein: the outer wall embedding of disk seat (1) upper portion install first sealing washer (11), the outer wall embedding of this disk seat (1) lower part install second sealing washer (12), air inlet (14) be located between first sealing washer (11) and second sealing washer (12).

8. A normally closed valve according to claim 1, wherein: the sealing gasket (17) is embedded and installed at the opening of the upper end of the valve hole (3), and a through hole communicated with the valve hole (3) is formed in the sealing gasket (17).

9. A normally closed valve according to claim 1, wherein: the upper end of the air outlet end cover (4) is positioned at the outer side of the upper port of the valve hole (3) and is provided with a lantern ring (23), and the lower part of the return spring (7) is sleeved on the lantern ring (23).

10. A normally closed valve according to claim 1, wherein: the plug (16) is cylindrical, and a conical part (24) is arranged at the lower end of the plug (16).