CN209800961U

CN209800961U - Throttle valve

Info

Publication number: CN209800961U
Application number: CN201920389806.2U
Authority: CN
Inventors: 王伟东
Original assignee: XINCHANG FENGYI ELECTRIC APPLIANCE CO Ltd
Current assignee: XINCHANG FENGYI ELECTRIC APPLIANCE CO Ltd
Priority date: 2018-05-07
Filing date: 2019-03-26
Publication date: 2019-12-17
Anticipated expiration: 2029-03-26

Abstract

The utility model discloses a throttle valve, which comprises a tubular valve body and a valve core arranged in the valve body, wherein the valve core comprises a columnar valve core body, and the axial center position of the valve core body is provided with an axially through throttle hole; the outer diameter of the valve body is less than or equal to 10mm, the outer diameter of the valve core body is less than or equal to 6mm, and the aperture of the throttling hole is less than or equal to 0.05 mm; the valve core body and the valve body are sealed through a sealing ring; and a plurality of bulges which are used for limiting the limit position of the valve core body and are formed on the inner wall of the valve hole by indenting from the outer wall of the valve body to the inner wall. The throttle valve overturns the design concept and the structural form of the existing throttle valve, greatly simplifies the structure, reduces the production cost, and can be produced in batch on the premise of not increasing the production cost particularly under the condition that the structure of the installation space is abnormally small and the requirement throttling aperture is abnormally small, so that the throttle valve is wider in application range.

Description

Throttle valve

Technical Field

The utility model relates to a choke valve is applied to air conditioner technical field more.

Background

The one-way throttle valve applied to the technical field of air conditioners in the prior art mainly has two forms, one is a hard sealing structure form, such as the sealing structures disclosed in CN204574645U, CN204574646U and CN203036923U, the outer ring of the valve core of the one-way throttle valve with the three structures is provided with an annular clamping groove, in the assembling process, the outer wall of the valve body (usually a copper pipe or an aluminum pipe) is inwards pressed and concaved, and an inner bulge matched with the clamping groove is formed on the inner wall of the valve hole, so that the sealing and the fixing between the valve core and the valve body are realized. In another common structure form, for example, the sealing structures disclosed in CN102537412A and CN102155826A, the valve core of the one-way throttle valve in the two structures is movable.

The one-way throttle valve with the two structural forms has the defects of more complex structure and higher production cost. In addition, based on the characteristic of complicated structure, when the structural space for applying the throttle valve is abnormally small, for example, the throttle hole diameter is less than 0.05mm, and the outer diameter of the throttle valve is less than 10mm, the existing complicated throttle valve structure is difficult to produce and process, and the production cost thereof becomes abnormally high even if the production is completed by using precision equipment. Therefore, there is a need for an improved throttle valve structure in the prior art to meet the mass production requirement of a one-way throttle valve for a very small structural space while controlling the cost.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to solve among the prior art one-way throttle valve structure complicated, manufacturing cost high, especially be suitable for the space of choke valve and be difficult to the technical defect of batched processing when unusual.

In order to solve the technical problem, the utility model provides a technical scheme as follows: a throttle valve comprises a tubular valve body and a valve core arranged in the valve body, wherein the valve body is provided with a valve hole which is axially communicated and is adaptive to the outer diameter of the valve core; the outer diameter of the valve body is less than or equal to 10mm, the outer diameter of the valve core body is less than or equal to 6mm, and the aperture of the throttling hole is less than or equal to 0.05 mm; the outer wall of the valve core body is provided with at least one circle of sealing groove, a sealing ring is arranged in the sealing groove, and the outer wall of the valve core body and the inner wall of the valve hole are sealed through the sealing ring; the limiting structure is used for limiting the limit position of the valve core body and is a plurality of protrusions formed on the inner wall of the valve hole by indenting the outer wall of the valve body towards the inner wall.

In a preferred embodiment, at least one side of the valve core body is provided with a filter screen.

According to a preferred embodiment, a filter screen support is arranged between the filter screen and the valve core body, and the filter screen is fixedly connected with the filter screen support.

In a preferred embodiment, the filter screen is arranged at the end part of the valve body.

The throttle valve of the present embodiment has a small radial dimension, for example, the outer diameter of the valve body is 10mm or less, the outer diameter of the valve body is 6mm or less, and the diameter of the orifice is 0.05mm or less. The radial dimension of the throttle valve of this structure is much smaller than that of the existing conventional throttle valve, which is difficult to seal by the hard seal form and the movable valve core seal form in the prior art.

Based on this, in this embodiment, through the form seal of sealing washer between case body and the valve body, compare with conventional hard seal structure and movable valve core formula choke valve structure among the prior art, thoroughly overturned the design conception and the structural style of current choke valve, greatly simplified the structure of choke valve, reduced the manufacturing cost of choke valve.

In addition, the throttle valve with the simplified structure can be produced in batch without increasing the production cost even under the condition that the space structure for installing the throttle valve is abnormally small and the required throttle hole diameter is abnormally small, so that the application range of the throttle valve is wider.

Drawings

FIG. 1 is a schematic structural view of a throttle valve according to the present embodiment;

FIG. 2 is a schematic view of a valve core structure of the throttle valve of the present embodiment;

FIG. 3 is a schematic view of an assembly structure of a valve core and a sealing ring of the throttle valve of the present embodiment;

Fig. 4 is a schematic cross-sectional view of the structure shown in fig. 3.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

as shown in fig. 1, the throttle valve of the present embodiment includes a tubular valve body 30 and a valve core disposed in the valve body, wherein the valve body 30 is provided with a valve hole 31 axially penetrating and corresponding to the outer diameter of the valve core. In this embodiment, the outer diameter of the valve body is 10mm or less.

As shown in fig. 2, the valve body of the present embodiment includes a columnar valve body 10, an orifice 11 penetrating in the axial direction is provided at an axial center position of the valve body 10, and at least one seal groove 12 is provided on an outer wall of the valve body 10. It should be noted that the number of the sealing grooves is 1-5 turns, and if necessary, the number of the sealing grooves may be more than 5 turns.

When the outer diameter of the valve body is 10mm or less, the outer diameter of the valve body 10 of the present embodiment is 6mm or less and the diameter of the orifice 11 is 0.05mm or less, so that the present invention is suitable for an extremely small flow rate throttling environment. Wherein the outer diameter of the valve core body 10 is preferably 4-6 mm.

As shown in fig. 2 to 4, in the present embodiment, a sealing ring 20 is installed in the sealing groove of the valve core body 11, wherein the outer wall of the valve core body 10 and the inner wall of the valve hole 31 are sealed by the sealing ring 20. Preferably, the sealing ring is an O-shaped sealing ring.

Further, the valve core body 10 of the present embodiment is limited in the valve hole 31 by the limiting structure 32. The limiting structures 32 are protrusions formed on the inner wall of the valve hole by pressing the outer wall of the valve body 30 to the inner wall, and are disposed on two sides of the valve core body 10 to limit the limit positions in two directions. Compared with the hard sealing type indentation in the prior art, the limiting mode has the advantages that the precision control requirement is lower, the annular indentation is not required to be formed, only a plurality of point-like or groove-like structures are required to be indented along the circumferential direction, the processing difficulty is lower, and the processing cost is lower.

In this embodiment, the valve body 30 is usually made of a copper tube or an aluminum tube, and based on the material characteristics of the copper tube or the aluminum tube, the valve body is more easily indented to form a limiting structure during assembly.

In the embodiment, under the conditions that the radial size of the throttle valve is small and the space for installing the throttle valve is small, the sealing between the inner wall of the valve body and the outer wall of the valve core is realized through the sealing ring, and the position processing mode of forming the inner bulge by inwards indenting the valve body to limit the valve core is realized through the outer sides of the two ends of the valve core, so that the sealing and fixing process is simplified, the processing precision is reduced, and in the batch production, the throttle valve has the advantages of low processing cost, small processing difficulty, suitability for batch production and cost advantage and application range advantage.

In a preferred embodiment, the throttle valve may also be provided with a filter screen 40, if desired. The filter screen 40 may be disposed on any one side of the valve core body 10, or the filter screen 40 may be disposed on both sides of the valve core body 10. The filter screen 40 may be mounted on the end of the valve body 30, or may be mounted in contact with the valve body 10 through a filter screen holder 41 as shown in fig. 1. In this embodiment, the filter screen support is arranged between the filter screen and the valve core body, the filter screen is fixedly connected with the filter screen support, and the limiting structure 32 is arranged on one side of the filter screen support far away from the valve core body so as to limit the filter screen support and the filter screen.

In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A throttle valve comprises a tubular valve body and a valve core arranged in the valve body, wherein the valve body is provided with a valve hole which is axially communicated and is adaptive to the outer diameter of the valve core; the valve is characterized in that the outer diameter of the valve body is less than or equal to 10mm, the outer diameter of the valve core body is less than or equal to 6mm, and the aperture of the throttling hole is less than or equal to 0.05 mm; the outer wall of the valve core body is provided with at least one circle of sealing groove, a sealing ring is arranged in the sealing groove, and the outer wall of the valve core body and the inner wall of the valve hole are sealed through the sealing ring; the limiting structure is used for limiting the limit position of the valve core body and is a plurality of protrusions formed on the inner wall of the valve hole by indenting the outer wall of the valve body towards the inner wall.

2. the throttle valve of claim 1, wherein at least one side of the spool body is provided with a filter screen.

3. the throttling valve according to claim 2, wherein a filter screen bracket is arranged between the filter screen and the valve core body, and the filter screen is fixedly connected with the filter screen bracket.

4. The throttling valve of claim 2, wherein the filter screen is disposed at an end of the valve body.