CN219221357U - Valve core and check valve - Google Patents

Abstract

The utility model relates to the technical field of valves, and provides a valve core and a check valve, wherein the valve core comprises: the valve core body is respectively arranged at a first part and a second part at two ends of the valve core body, the outer wall surface of the first part is suitable for being attached to the inner wall surface of the guide cavity of the valve body, and the second part is suitable for being abutted to the sealing surface of the valve body; along the axial direction of the valve core body, cavities are respectively formed on the valve core body and the first part. Through the laminating of the first portion with the internal face of the direction cavity of valve body of case body, the sealed face butt setting of second portion and valve body has realized the sealed effect of case and valve body, and along the axial of case body, offer the cavity in case body and first portion, can effectually alleviate the dead weight of case, and then avoid under the effect of gravity, can make the trend of valve clack along vertical direction downward movement to when realizing the sealed face butt of second portion and valve body, the part of first portion can not take place the separation with sealed face, realized the good sealed effect between case and the valve body.

Description

Valve core and check valve

Technical Field

The utility model relates to the technical field of valves, in particular to a valve core and a check valve.

Background

The check valve is a valve which is used for blocking the backflow of a medium by the action of the valve clack of the opening and closing part and the self weight and the pressure of the medium, and when the medium is introduced into the medium channel and circulates in the medium channel, the valve clack is opened by the flowing force of the medium in the medium channel.

The Y-shaped check valve in the prior art has the advantages that due to the fact that the weight of the valve clack is heavy, after the valve clack is sealed with the valve body, due to the fact that the dead weight of the valve clack is large, the valve clack has a trend of moving downwards along the vertical direction under the action of gravity, and therefore the valve clack can be far away from a part of sealing surface, which is located on the whole sealing surface and is relatively high, of the valve body, and sealing performance between the valve clack and the valve body is poor, and the service performance of the valve is affected.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defects that in the Y-shaped check valve in the prior art, due to the heavy weight of the valve clack, after the valve clack is sealed with the valve body, the valve clack has a tendency to move downwards along the vertical direction under the action of gravity, so that the valve clack is far away from a part of sealing surface which is positioned on the whole sealing surface and is relatively higher on the valve body, the tightness between the valve clack and the valve body is further deteriorated, and the service performance of the valve is influenced, thereby providing the valve core and the check valve.

A valve cartridge, comprising: the valve core body is respectively arranged at a first part and a second part at two ends of the valve core body, the outer wall surface of the first part is suitable for being attached to the inner wall surface of the guide cavity of the valve body, and the second part is suitable for being abutted to the sealing surface of the valve body; along the axial direction of the valve core body, cavities are respectively formed in the valve core body and the first part.

Optionally, in the valve element, an outer peripheral surface of the second portion of the valve element is provided in a spherical surface.

Optionally, in the above valve core, at least one medium discharge hole is opened in a circumferential direction of the valve core body.

Optionally, in the valve core, at least one auxiliary discharge hole is formed on the first portion along an axial direction of the first portion.

Optionally, in the valve element, a wear-resistant layer is disposed on an outer peripheral surface of the first portion.

A check valve, comprising: the medium channel comprises an inlet section and an outlet section, and a sealing surface is arranged on the inner wall surface of the valve body at the tail end of the inlet section along the medium flowing direction; the valve core is suitable for being arranged in the guide cavity and is the valve core; the valve core is configured to be movable relative to the guide chamber by an external force, a sealing position to seal with the sealing surface, and an open position separated from the sealing surface, in which the second portion abuts the sealing surface.

Optionally, in the check valve, the sealing surface is inclined, and when the second portion abuts against the sealing surface, a line seal is formed between the second portion and the sealing surface.

Optionally, in the check valve, the check valve is a Y-type check valve.

The technical scheme of the utility model has the following advantages:

1. the utility model provides a valve core, comprising: the valve core body is respectively arranged at a first part and a second part at two ends of the valve core body, the outer wall surface of the first part is suitable for being attached to the inner wall surface of the guide cavity of the valve body, and the second part is suitable for being abutted to the sealing surface of the valve body; along the axial direction of the valve core body, cavities are respectively formed in the valve core body and the first part.

In the case of this structure, through the inner wall face laminating of the first portion with the direction cavity of valve body of case body, the sealed face butt setting of second portion and valve body has realized the sealed effect of case and valve body, and offer the cavity along the axial of case body in case body and first portion, can effectually alleviate the dead weight of case, and then avoid under the effect of gravity, can make the valve clack along the trend of vertical direction downward movement, thereby realize when the sealed face butt of second portion and valve body, the part of first portion can not take place the separation with the sealed face, good sealed effect between valve core and the valve body has been realized, simultaneously, this case can be applicable to the medium of multiple state, for example liquid and gas, its gas pressure is less, also can realize the sealed of case and valve body, in the Y type check valve among the prior art, because the weight of valve clack and valve body are heavier, after the valve clack is sealed, under the effect of gravity, have the trend along vertical direction downward movement, consequently can keep away from the valve clack and lie in the sealed face relatively higher part of valve clack, and the poor performance of valve body is used to the influence between the valve clack.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a valve element provided in a first embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of the valve cartridge of FIG. 1;

FIG. 3 is a schematic view of the external structure of the valve body;

FIG. 4 is a schematic cross-sectional view of FIG. 3;

FIG. 5 is a schematic view of the position structure between the sealing surface and the first portion;

reference numerals illustrate:

1. a valve core body; 101. a medium discharge hole;

2. a first section; 3. a second section; 201. an auxiliary discharge hole;

4. a valve body; 401. a guide cavity; 402. a media channel; 403. sealing surfaces.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

The present embodiment describes a valve core, referring to fig. 1-5, the valve core includes a valve core body 1, and a first portion 2 and a second portion 3 separately provided at two ends of the valve core body 1, wherein an outer wall surface of the first portion 2 is adapted to be bonded with an inner wall surface of a guiding cavity 401 of a valve body 4, and the second portion 3 is adapted to be abutted with a sealing surface 403 of the valve body 4, and cavities are respectively provided on the valve core body 1 and the first portion 2 along an axial direction of the valve core body.

Through the laminating of the first portion 2 of case body 1 and the internal face of the direction cavity 401 of valve body 4, the sealed face 403 butt setting of second portion 3 and valve body 4 has realized the sealed effect of case and valve body 4, and offer the cavity along the axial of case body 1 on case body 1 and first portion 2, can effectually alleviate the dead weight of case, and then avoid under the effect of gravity, can make the trend of valve clack along vertical direction downward movement, thereby realize when the sealed face 403 butt of second portion 3 and valve body 4, the part of first portion 2 can not take place the separation with sealed face 403, realize the good sealed effect between case and the valve body 4, simultaneously, this case can be applicable to the medium of multiple state, for example liquid and gas, its gas pressure is less, also can realize the sealed of case and valve body 4.

In this embodiment, the outer peripheral surface of the second portion 3 of the valve element may be formed in a spherical shape, and the spherical structure is easy to mold and can be brought into good contact with the sealing surface 403.

In order to facilitate the movement of the valve core relative to the guide cavity 401 of the valve body 4, at least one medium discharge hole 101 can be formed in the circumferential direction of the valve core body 1, in the process of the movement of the valve core relative to the guide cavity 401 of the valve body 4, gas between the valve core body 1 and the first part 2 can be discharged into the guide cavity 401 along the medium discharge hole 101, so that the pressure between the valve core and the guide cavity 401 is reduced, the valve core is not extruded by the pressure during the action, the normal opening and closing of the valve core are further ensured, and meanwhile, the valve core can be completely opened under the condition of ensuring small flow, and the four medium discharge holes 101 in the embodiment are formed in the mode of being uniformly arranged along the circumferential direction of the valve core body 1, see fig. 1.

In order to further improve the smoothness of the valve core in the opening and closing process, at least one auxiliary discharging hole 201 is formed in the first portion 2 along the axial direction of the first portion 2.

In this embodiment, a wear-resistant layer may be disposed on the outer peripheral surface of the first portion 2, the wear-resistant layer is made of chromium, and is formed on the outer peripheral surface of the first portion 2 by bead welding, and the thickness of the wear-resistant layer is 2.5mm or more.

The first part 2 and the second part 3 in the embodiment are integrally formed with the valve core body 1.

Example 2:

this embodiment describes a check valve, see fig. 1-5, comprising a valve body 4 and a valve core, wherein a guide cavity 401 and a medium channel 402 are provided in the valve body 4, which are in communication, the medium channel 402 comprises an inlet section and an outlet section, a sealing surface 403 is provided on the inner wall surface of the valve body 4 at the end of the inlet section in the direction of the medium flow, the valve core is adapted to be provided in the guide cavity 401, and the valve core is the valve core described in embodiment 1.

The valve element is movable relative to the guide chamber 401 by external force to a sealing position in which it cooperates with the sealing surface 403 to seal, and an open position separated from the sealing surface 403 in which the second portion 3 of the valve element abuts the sealing surface 403.

The check valve adopts the valve core described in the embodiment 1, so that the check valve has all the beneficial effects of the valve core, and is beneficial to opening and closing the valve core when in use, and can be suitable for low-flow media.

In this embodiment, the sealing surface 403 may be provided in an inclined surface, and when the second portion 3 abuts against the sealing surface 403, the second portion 3 and the sealing surface 403 may be provided in a linear seal, and the second portion 3 may be provided in a spherical surface so as to form a linear seal with the slope seal of the sealing surface 403 of the valve body 4, so that a good seal may be achieved even with a gas medium under low pressure.

The check valve in this embodiment is provided as a Y-type check valve.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (8)

1. A valve cartridge, comprising:

the valve comprises a valve core body (1), a first part (2) and a second part (3) which are respectively arranged at two ends of the valve core body (1), wherein the outer wall surface of the first part (2) is suitable for being attached to the inner wall surface of a guide cavity (401) of a valve body (4), and the second part (3) is suitable for being abutted against a sealing surface (403) of the valve body (4);

along the axial direction of the valve core body (1), cavities are respectively formed in the valve core body (1) and the first part (2).

2. The valve cartridge according to claim 1, wherein an outer peripheral surface of the second portion (3) of the valve cartridge is spherically provided.

3. The valve cartridge according to claim 2, characterized in that at least one medium discharge hole (101) is opened in the circumferential direction of the valve cartridge body (1).

4. A valve cartridge according to claim 3, characterized in that at least one auxiliary discharge hole (201) is provided in the first part (2) in the axial direction of the first part (2).

5. The valve cartridge according to any one of claims 1 to 4, characterized in that a wear-resistant layer is provided on the outer peripheral surface of the first portion (2).

6. A check valve, comprising:

the device comprises a valve body (4), wherein a guide cavity (401) and a medium channel (402) which are communicated and intersected are formed in the valve body (4), the medium channel (402) comprises an inlet section and an outlet section, and a sealing surface (403) is arranged on the inner wall surface of the valve body (4) at the tail end of the inlet section along the direction of medium flow;

a valve cartridge adapted to be disposed within the guide cavity (401), the valve cartridge being in accordance with any one of claims 1-5;

the valve element is configured to be movable relative to the guide chamber (401) by an external force, a sealing position in which the valve element is sealed in cooperation with the sealing surface (403), and an open position in which the valve element is separated from the sealing surface (403), in which sealing position the second portion (3) abuts the sealing surface (403).

7. A non-return valve according to claim 6, characterized in that the sealing surface (403) is provided in an inclined plane, and that a line seal is provided between the second portion (3) and the sealing surface (403) when the second portion (3) abuts against the sealing surface (403).

8. The check valve of claim 7 wherein the check valve is a Y-check valve.

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