CN215831258U

CN215831258U - Valve body casting structure

Info

Publication number: CN215831258U
Application number: CN202122354308.4U
Authority: CN
Inventors: 张澄晓; 曾云
Original assignee: Ruian City Sanxing Antiseptic Casting Co ltd
Current assignee: Ruian City Sanxing Antiseptic Casting Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-02-15
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a valve body casting structure which comprises a spherical shell with an opening at one end, wherein a second flange is arranged on the outer wall of the opening end of the spherical shell, a first flange is arranged at the other end of the spherical shell through a connecting part, a first cavity is arranged in the spherical shell, a second cavity is arranged in the connecting part, the second cavity is communicated with the first cavity, a valve rod seat is arranged at the top end of the spherical shell, and the valve rod seat is of a solid structure; one end of the inner wall of the first cavity, which is close to the second cavity, protrudes out of the inner wall of the first cavity, and is provided with a second step part and a first step part, and one side of the outer end of the second flange, which is close to the valve rod seat, is symmetrically provided with a second boss, so that the finished product has good quality.

Description

Valve body casting structure

Technical Field

The utility model relates to the technical field of valve structures, in particular to a valve body casting structure.

Background

The valve is a mechanical device for controlling fluid flow, flow direction, pressure and the like, is a basic control component in a pipeline system, can be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum vanadium steel valves and dual-phase steel valves according to different materials, wherein the main components of the valve are valves, the existing valve bodies usually adopt a precision casting mode to obtain precision casting blanks, and then finish machining is carried out on inner cavities, the defects of shrinkage porosity, shrinkage cavity and the like easily occur during casting of the existing valve bodies, the number of defective products is large, the cost is high, and the structure of the valve body casting needs to be improved.

Disclosure of Invention

The present invention aims to provide a valve body casting structure to solve the problems in the background art, and to solve the technical problems, the present invention provides the following technical solutions: a valve body casting structure comprises a spherical shell 1 with one end provided with an opening, wherein a second flange plate 10 is arranged on the outer wall of the opening end of the spherical shell 1, a first flange plate 3 is arranged at the other end of the spherical shell 1 through a connecting part 2, a first cavity 11 is arranged in the spherical shell 1, a second cavity 13 is arranged in the connecting part 2, the second cavity 13 is communicated with the first cavity 11, a valve rod seat 6 is arranged at the top end of the spherical shell 1, and the valve rod seat 6 is of a solid structure; one end of the inner wall of the first cavity 11, which is close to the second cavity 13, protrudes out of the inner wall of the first cavity 11, a second step part 14 and a first step part 12 are arranged on the inner wall of the first cavity, and a second boss 9 is symmetrically arranged at one side of the valve rod seat 6, close to the outer end of the second flange 10.

Further: if the inner diameter of the first step portion 12 is D1, the inner diameter of the second step portion 14 is D2, and the inner diameter of the second cavity 13 is D3, then D2 > D3 > D1 exists, and a tapered portion 15 is arranged between the first step portion 12 and the second cavity 13 for transition.

Further: and B1 is greater than B2 when the thickness distance between the upper end of the second boss 9 and the end face of the second flange 10 is B1 and the thickness distance between the lower end of the second boss 9 and the end face of the second flange 10 is B2.

Further: and a third flange plate 5 is arranged at the upper end of the valve rod seat 6, and a feeding part 7 is arranged at the top end of the third flange plate 5.

Further: circular arc 8 transitions are arranged between the second step part 14 and the first step part 12 and between the second step part 14 and the inner wall of the first cavity 11.

Further: the top end of the first flange plate 3 is provided with a first boss 4 corresponding to the feeding part 7, and the first boss 4 is equal to the feeding part 7 in height.

The utility model has the beneficial effects that: the valve body casting structure provided by the utility model has a spherical shell, has good stability, is beneficial to flowing forming of molten metal during casting, has a solid valve rod seat, is provided with a feeding part at the top, is beneficial to supplementing the forming requirements of a third flange plate, the lower part of the spherical shell and a second flange plate by the molten metal during casting forming, avoids the occurrence of mold filling unsatisfied, and is provided with a second step part and a first step part by protruding the inner wall of a first cavity at one end of the inner wall of the first cavity close to the second cavity, so that on one hand, the effective wall thickness of the joint of the second cavity and the first cavity is increased, the waste caused by casting cracks at the joint is avoided, on the other hand, the machining allowance of an inner cavity is not increased too much by adopting a double-step structure, the mechanical machining time is saved, and the working efficiency is improved; arc transition is arranged between the second step part and the first step part and between the second step part and the inner wall of the first cavity, so that the phenomenon that cracks occur due to stress concentration when the metal liquid at the corresponding connecting position is cooled is effectively avoided, and the quality of finished products is ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

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

Fig. 2 is an overall side view cutaway configuration of the present invention.

Fig. 3 is an overall top view schematic diagram of the present invention.

Fig. 4 is a partially enlarged view of a portion a in fig. 2.

In the figure: 1. a spherical shell; 2. a connecting portion; 3. a first flange plate; 4. a first boss; 5. a third flange plate; 6. a valve stem seat; 7. a feeding part; 8. a circular arc; 9. a second boss; 10. a second flange plate; 11. a first cavity; 12. a first step portion; 13. a second cavity; 14. a second step portion; 15. a tapered portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a valve body casting structure comprises a spherical shell 1 with one end provided with an opening, wherein a second flange plate 10 is arranged on the outer wall of the opening end of the spherical shell 1, a first flange plate 3 is arranged at the other end of the spherical shell 1 through a connecting part 2, a first cavity 11 is arranged in the spherical shell 1, a second cavity 13 is arranged in the connecting part 2, the second cavity 13 is communicated with the first cavity 11, a valve rod seat 6 is arranged at the top end of the spherical shell 1, and the valve rod seat 6 is of a solid structure; one end of the inner wall of the first cavity 11, which is close to the second cavity 13, protrudes out of the inner wall of the first cavity 11, and is provided with a second step part 14 and a first step part 12, and the outer end of the second flange 10, which is close to one side of the valve rod seat 6, is symmetrically provided with a second boss 9.

Preferably: if the inner diameter of the first step portion 12 is D1, the inner diameter of the second step portion 14 is D2, and the inner diameter of the second cavity 13 is D3, then D2 > D3 > D1 is provided, and a tapered portion 15 is arranged between the first step portion 12 and the second cavity 13 for transition.

Preferably: and B1 is greater than B2 when the thickness distance between the upper end of the second boss 9 and the end face of the second flange 10 is B1 and the thickness distance between the lower end of the second boss 9 and the end face of the second flange 10 is B2.

Preferably: the upper end of the valve rod seat 6 is provided with a third flange 5, and the top end of the third flange 5 is provided with a feeding part 7.

Preferably: circular arc 8 transitions are arranged between the second step part 14 and the first step part 12 and between the second step part 14 and the inner wall of the first cavity 11.

Preferably: the top end of the first flange 3 is provided with a first boss 4 corresponding to the feeding part 7, and the first boss 4 is as high as the feeding part 7.

The valve body casting structure provided by the utility model has the advantages that the valve body casting structure is provided with the spherical shell 1, the stability is good, the flowing forming of molten metal is facilitated during casting, the valve rod seat 6 is of a solid structure, the feeding part is arranged at the top of the valve rod seat, the metal liquid is facilitated to supplement the third flange 5, the lower part of the spherical shell 1 and the forming requirement of the second flange 10 during casting forming, the insufficient filling is avoided, the second step part 14 and the first step part 12 are arranged at the position, close to one end of the second cavity 13, of the inner wall of the first cavity 11 and protrude out of the inner wall of the first cavity 11, on one hand, the effective wall thickness of the joint of the second cavity 13 and the first cavity 11 is increased, the waste caused by casting cracks at the joint is avoided, on the other hand, the machining time is saved and the working efficiency is improved due to the adoption of the double-step structure without excessively increasing the machining allowance of the inner cavity; and circular arcs 8 are arranged between the second step part 14 and the first step part 12 and between the second step part 14 and the inner wall of the first cavity 11 for transition, so that the phenomenon of cracks caused by stress concentration generated when the metal liquid at the corresponding connecting position is cooled is effectively avoided, and the quality of finished products is ensured.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve body casting structure which is characterized in that: the valve rod seat comprises a spherical shell (1) with one end provided with an opening, wherein a second flange (10) is arranged on the outer wall of the opening end of the spherical shell (1), a first flange (3) is arranged at the other end of the spherical shell (1) through a connecting part (2), a first cavity (11) is arranged in the spherical shell (1), a second cavity (13) is arranged in the connecting part (2), the second cavity (13) is communicated with the first cavity (11), a valve rod seat (6) is arranged at the top end of the spherical shell (1), and the valve rod seat (6) is of a solid structure; the one end protrusion that first cavity (11) inner wall is close to second cavity (13) first cavity (11) inner wall is provided with second step portion (14) and first step portion (12), second ring flange (10) outer end is close to valve stem seat (6) one side symmetry is provided with second boss (9).

2. A valve body casting structure as defined in claim 1, wherein: if the inner diameter of the first step part (12) is D1, the inner diameter of the second step part (14) is D2, and the inner diameter of the second cavity (13) is D3, D2 is more than D3 is more than D1, and a tapered part (15) is arranged between the first step part (12) and the second cavity (13) for transition.

3. A valve body casting structure as defined in claim 2, wherein: and B1 is greater than B2 when the thickness distance between the upper end of the second boss (9) and the end face of the second flange (10) is B1 and the thickness distance between the lower end of the second boss (9) and the end face of the second flange (10) is B2.

4. A valve body casting structure as defined in claim 3, wherein: and a third flange plate (5) is arranged at the upper end of the valve rod seat (6), and a feeding part (7) is arranged at the top end of the third flange plate (5).

5. A valve body casting structure as defined in claim 4, wherein: circular arc (8) transitions are arranged between the second step part (14) and the first step part (12) and between the second step part (14) and the inner wall of the first cavity (11).

6. A valve body casting structure as defined in claim 5, wherein: the top end of the first flange plate (3) is provided with a first boss (4) corresponding to the feeding part (7), and the first boss (4) is as high as the feeding part (7).