CN114776823A

CN114776823A - Valve device

Info

Publication number: CN114776823A
Application number: CN202210446984.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-07-22
Anticipated expiration: 2042-04-26
Also published as: CN114776823B

Abstract

The invention discloses a valve device, which comprises a valve seat body, wherein the valve seat body comprises a valve seat and a valve sleeve, the valve seat is provided with an installation hole part, the valve sleeve is provided with a plug-in post part matched with the installation hole part, and the valve sleeve also comprises a limiting post part connected with the plug-in post part; along the direction of keeping away from spacing post portion, the grafting post portion includes a plurality of branch posts that radial dimension reduces gradually, and the branch post of close proximity spacing post portion includes the tight-fitting section with mounting hole portion press-fit, and spacing post portion offsets with the disk seat. The valve seat body provided by the invention has the advantages that the inserting column part of the valve sleeve adopts a sectional design, on one hand, each stage of column can gradually guide the insertion of the inserting column part, so that the smoothness of coaxial normal installation and press installation of the inserting column part and the mounting hole part is ensured as much as possible; on the other hand, the axial dimensions of tight-fitting section is less, and pressure equipment power can be less, is favorable to guaranteeing that the spliced pole portion all inserts for spacing post portion supports tightly with the disk seat.

Description

Valve device

Technical Field

The invention relates to the technical field of refrigeration control, in particular to a valve device.

Background

Valve devices such as motorised valve's valve seat body generally includes disk seat, valve barrel and takeover, and valve barrel and takeover are all installed in the disk seat, are used for installing parts such as needle in the valve barrel, and wherein, valve barrel and disk seat are the interference pressure equipment, and at this moment, how to guarantee the forward pressure equipment of valve barrel and disk seat as far as possible to guarantee the smoothness nature of pressure equipment, still wait the technical problem that solves at present urgently.

Disclosure of Invention

The invention aims to provide a valve device, wherein a plug column part of a valve sleeve of a valve seat body is designed in a sectional mode, the radial dimension of each sub-column is gradually reduced along the direction far away from a limit column part, and only the sub-column close to the limit column part is provided with a close fitting section in interference fit with an installation hole part.

In order to solve the technical problem, the invention provides a valve device, which comprises a valve seat body, wherein the valve seat body comprises a valve seat and a valve sleeve, the valve seat is provided with an installation hole part, the valve sleeve is provided with a plug post part matched with the installation hole part, and the valve sleeve also comprises a limiting post part connected with the plug post part; along keeping away from the direction of spacing post portion, grafting post portion includes a plurality of branch posts that radial dimension reduces gradually, and next-door neighbour spacing post portion divide the post include with the tight-fitting section of mounting hole portion press-fit, spacing post portion with the disk seat offsets.

The valve device provided by the invention has the advantages that the inserting connection column part of the valve sleeve of the valve seat body adopts a sectional design, the radial dimension of each sub-column is gradually reduced along the direction far away from the limiting column part, and only the sub-column close to the limiting column part is provided with a tight fitting section in interference fit with the installation hole part. By adopting the structure, on one hand, the insertion can be convenient, and each stage of the pillars can gradually guide the insertion of the plug pillar part so as to ensure that the plug pillar part and the mounting hole part can be coaxially and positively mounted as much as possible and further ensure the smoothness of the press mounting; on the other hand, the tight fitting section is only a part of the plug column part in the axial direction, the axial size of the tight fitting section is smaller, the press fitting force required when the valve sleeve is pressed and mounted can be smaller, and the valve sleeve is more favorable for ensuring that the plug column part is completely inserted into the mounting hole part so that the limiting column part is abutted against the valve seat to complete reliable assembly of the valve sleeve and the valve seat.

Drawings

FIG. 1 is a schematic structural view of one embodiment of a valve sleeve;

FIG. 2 is a partial cross-sectional view of FIG. 1;

fig. 3 is a schematic view of another embodiment of a valve sleeve;

FIG. 4 is a diagram of the relative position of the valve sleeve and valve seat during initial installation of the valve sleeve;

FIG. 5 is an enlarged view of a portion of the connection of the valve sleeve to the valve seat with a portion of the valve sleeve inserted therein;

FIG. 6 is a view of the connection of the valve sleeve to the valve seat when the valve sleeve is fully inserted;

fig. 7 is a connection structure diagram of the valve sleeve and the valve seat after the welding is completed.

The reference numerals in fig. 1-7 are illustrated as follows:

1 valve seat, 11 mounting hole parts and 111 solder inlet groove;

2, valve sleeve, 21 plug post, 21a tight fitting section, 211 constant diameter section, 212 taper section, 213 solder groove, 22 limit post and 221 notch;

3 connecting pipe

And (A) a solder inlet.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

As used herein, the term "plurality" refers to an indefinite number of plural, usually more than two; and when the term "plurality" is used to indicate a quantity of a particular element, it does not indicate a quantitative relationship between such elements.

Referring to fig. 1 to 7, fig. 1 is a schematic structural view of an embodiment of a valve sleeve, fig. 2 is a partial sectional view of fig. 1, fig. 3 is a schematic structural view of another embodiment of a valve sleeve, fig. 4 is a relative position view of a valve sleeve and a valve seat when the valve sleeve is initially installed, fig. 5 is a partially enlarged view of a joint between the valve sleeve and the valve seat when the valve sleeve is partially inserted, fig. 6 is a connection structure diagram of the valve sleeve and the valve seat when the valve sleeve is completely inserted, and fig. 7 is a connection structure diagram of the valve sleeve and the valve seat after welding is completed.

As shown in fig. 6 and 7 in combination with fig. 1 and 2, the present invention provides a valve device, which includes a valve seat body, the valve seat body includes a valve seat 1, a valve housing 2 and a connecting pipe 3, the valve seat 1 is provided with a mounting hole portion 11 for fastening the valve housing 2, the valve housing 2 is provided with a plug-in post portion 21 matching with the mounting hole portion 11, the valve housing 2 further includes a position-limiting post portion 22 connected with the plug-in post portion 21; along the direction of keeping away from spacing post portion 22, plug post portion 21 includes a plurality of branch posts that radial dimension reduces gradually, and the branch post of the adjacent spacing post portion 22 includes the tight fit section 21a with the mounting hole portion 11 press-fit, and when plug post portion 21 all inserted mounting hole portion 11, spacing post portion 22 offseted tightly with disk seat 1.

The invention provides a valve seat body, wherein the inserting column part 21 of the valve sleeve 2 adopts a sectional design, the radial dimension of each sub-column is gradually reduced along the direction far away from the limit column part 22, and only the sub-column adjacent to the limit column part 22 is provided with a tight fitting section 21a in interference fit with the installation hole part 11. By adopting the structure, on one hand, the insertion can be convenient, and each stage of the pillars can gradually guide the insertion of the plug pillar part 21 so as to ensure that the plug pillar part 21 and the mounting hole part 11 can be coaxially and normally mounted as much as possible and further ensure the smoothness of the press mounting; on the other hand, the tight fitting section 21a is only a part of the plug post portion 22 in the axial direction, and the axial dimension thereof is small, so that the press-fitting force required when the valve housing 2 is press-fitted can be small, which is more favorable for ensuring that the plug post portion 21 is completely inserted into the mounting hole portion 11, so that the limit post portion 22 abuts against the valve seat 1, and reliable assembly of the valve housing 2 and the valve seat 1 is completed.

Here, the embodiment of the present invention does not limit the number of the studs included in the plug post portion 21 and the specific value of the axial dimension of the tight fitting section 21a, and in practice, a person skilled in the art can design the plug post portion according to actual needs.

In a specific embodiment, the axial dimension of the tight fitting section 21a may be designed to be smaller than the axial dimension of the rest of the plug section 21, i.e. the axial dimension of the tight fitting section 21a is smaller than half the axial dimension of the plug section 21.

It is known that the valve sleeve 2 is provided with a valve needle, and therefore, the valve sleeve 2 and the post portion 21 are cylindrical members. For convenience of description, the portion of the valve seat 1 having the mounting hole portion 11 may be referred to as a mounting valve body portion, and three times the wall thickness of the smaller wall thickness of the two mating components, i.e., the plug post portion 21 and the mounting valve body portion, may be a set size, and in practical applications, the axial size of the tight fitting section 21a may also be defined by the set size, specifically, the axial size of the tight fitting section 21a may be designed to be smaller than the set size.

Except the sub-columns with the tight fitting sections 21a, the outer diameters of the other sub-columns can be smaller than the inner diameter of the mounting hole part 11, so that smooth insertion of the plug-in column part 21 is guaranteed. Of course, the radial dimension of the sub-column adjacent to the sub-column having the close fitting section 21a may be designed to coincide with the mounting hole portion 11 without affecting the insertion of the plug post portion 21.

With continued reference to fig. 2, each sub-column may include an equal-diameter section 211 and a tapered section 212, the tapered section 212 is a guiding section that can guide the insertion of the plug column portion 21 and assist the plug column portion 21 to perform alignment so as to ensure that the plug column portion 21 can be coaxially and normally installed, meanwhile, the tapered section 212 is also a transition connection section, along the direction away from the position-limiting column portion 22, the radial dimension of the small-diameter end of the tapered section 212 of the upstream sub-column may be consistent with the radial dimension of the equal-diameter section 211 of the downstream adjacent sub-column and is used to connect the equal-diameter section 211 of the downstream adjacent sub-column, and the equal-diameter section 211 of the sub-column adjacent to the position-limiting column portion 22 may be the aforementioned tight-fitting section 21 a.

Further, as shown in fig. 5, a diagonal dimension L1 of a cross-sectional surface through the central axis of the constant-diameter section 211 of the sub-column (the lowermost sub-column in the drawing) farthest from the restraining column part 22 may be smaller than the inner diameter L2 of the mounting hole part 11. With this design, even if the post portion 21 and the mounting hole portion 11 are deviated by a small angle at the initial mounting, the post portion 21 can be smoothly inserted, and the assembly of the valve housing 2 can be facilitated.

After the press-fitting of the valve housing 2 is completed, in order to ensure the connection reliability between the valve housing 2 and the valve seat 1, the valve housing 2 and the valve seat 1 generally need to be welded, and a commonly used welding method is furnace welding. In order to facilitate the filling and flowing of the solder, solder grooves 213 may be formed in the inner wall of the mounting hole portion 11 and/or the outer wall of the plug post portion 21, and the solder may flow from the bottom to the top and be filled in the respective solder grooves 213 to weld the valve housing 2 and the valve seat 1 together.

The shape, number, and mounting position of the solder grooves 213 are not limited herein, and may be determined according to actual conditions. For example, the shape of the solder groove 213 can be any one of a spiral line (as shown in fig. 1), an arc line, a straight line (as shown in fig. 3), or a combination of any several of them; the solder groove 213 may be distributed only on the outer wall of the fitting section 21a, or may be distributed over the entire plug post section 21.

With reference to fig. 4 and 6, the inner wall of the mounting hole portion 11 may be provided with a solder entering groove 111, and the solder entering groove 111 may form a solder entering opening a in cooperation with the tapered section 212 of the sub-post farthest from the position restricting post portion 22, and at the time of soldering, solder may enter from the solder entering opening a and gradually fill the gap between the plug post portion 21 and the mounting hole portion 11 and each solder entering groove 111.

Since this welding is an internal welding, it is difficult to visually observe the welding from the outside of the valve seat body. Therefore, in the embodiment of the present invention, the abutting portion between the position-limiting column portion 22 and the valve seat 1 is provided with the notch 221, and the notch 221 may be located on the valve seat 1, or may be located on the position-limiting column portion 22, or may be located on both the valve seat 1 and the position-limiting column portion 22, and the notch 221 may be communicated with the solder groove 213, so that when the solder is enough, the solder may flow out from the notch 221, and thus, the filling condition of the solder may be visually determined, as shown in fig. 7, when the soldering is completed, the solder may block the notch 221.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and embellishments can be made without departing from the principle of the present invention, and these modifications and embellishments should also be regarded as the protection scope of the present invention.

Claims

1. A valve device comprises a valve seat body and is characterized in that the valve seat body comprises a valve seat (1) and a valve sleeve (2), the valve seat (1) is provided with an installation hole part (11), the valve sleeve (2) is provided with an insertion column part (21) matched with the installation hole part (11), and the valve sleeve (2) further comprises a limiting column part (22) connected with the insertion column part (21);

along keeping away from the direction of spacing post portion (22), plug post portion (21) include a plurality of branch posts that radial dimension reduces gradually, and tightly be close to spacing post portion (22) divide the post include with mounting hole portion (11) press-fit's tight fit section (21a), spacing post portion (22) with disk seat (1) offsets.

2. The valve device according to claim 1, wherein the outer diameter of each of the partial cylinders other than the partial cylinder including the close-fitting section (21a) is smaller than the inner diameter of the mounting hole portion (11).

3. The valve device according to claim 1, wherein each of the sub-columns includes a constant diameter section (211) and a tapered section (212), and a small diameter end of the tapered section (212) of the upstream sub-column is connected to the constant diameter section (211) of the downstream adjacent sub-column in a direction away from the restraining column part (22), and the constant diameter section (211) of the sub-column adjacent to the restraining column part (22) is the tight fitting section (21 a).

4. A valve device according to claim 3, wherein the cross-sectional median axis of the constant diameter section (211) of the sub-column furthest from the restraining column part (22) has a diagonal dimension smaller than the inner diameter of the mounting hole part (11).

5. A valve device according to claim 1, wherein the axial dimension of the tight fitting section (21a) is smaller than the axial dimension of the rest of the plug section (21); and/or the presence of a gas in the gas,

the valve seat (1) is provided with a mounting hole part (11) which is a mounting valve body part, three times of the wall thickness of one of the mounting valve body part and the plug column part (21) with smaller wall thickness is a set size, and the axial size of the tight fitting section (21a) is smaller than the set size.

6. A valve device according to any one of claims 1-5, characterised in that the inner wall of the mounting bore portion (11) and/or the outer wall of the plug post portion (21) is provided with a solder groove (213).

7. The valve device according to claim 6, wherein a notch (221) is formed at the abutting position of the limiting column part (22) and the valve seat (1), and the notch (221) is communicated with the solder groove (213).

8. Valve device according to claim 6, wherein the solder grooves (213) are distributed only on the outer wall of the tight fitting section (21 a).

9. A valve device according to claim 6, characterized in that the solder bath (213) is of any one or a combination of any number of spiral, arc, straight.

10. The valve device according to claim 6, wherein the inner wall of the mounting hole portion (11) is provided with a solder inlet groove (111), and a solder inlet (A) is formed between the solder inlet groove (111) and the position-limiting pillar portion (22).