CN212718263U

CN212718263U - Welding piece and welding structure thereof

Info

Publication number: CN212718263U
Application number: CN202021579677.2U
Authority: CN
Inventors: 李扬
Original assignee: Xihua University
Current assignee: Xihua University
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-03-16
Anticipated expiration: 2030-08-03

Abstract

The utility model discloses a welding and welded structure thereof, including the stop valve body, the left surface fixedly connected with output connection pipe of stop valve body, the mounting hole has been seted up to the right flank of stop valve body, the through-hole has been seted up to the lower surface of stop valve body, the inner wall fixedly connected with input connection pipe of through-hole, input connection pipe keeps away from the one end fixedly connected with flange of stop valve body, the standing groove has been seted up to output connection pipe right-hand member inner wall, the inner wall fixedly connected with internal thread ring of standing groove. This welding piece and welded structure thereof, through setting up case and first welding ring, becomes first welding ring with the welding wire welding at the terminal surface of case, and first welding ring acts as the sealed face of case after processing, and first welding ring is small, and the processing cutting output is little, and under the condition that satisfies the sealed face wear resistance requirement of case, has reduced wear-resisting alloy material's use to realize the effect of saving the cost.

Description

Welding piece and welding structure thereof

Technical Field

The utility model relates to the field of welding technique, specifically a welding piece and welded structure thereof.

Background

The stop valve is a valve which is most widely used, is popular because the stop valve is not only suitable for medium and low pressure, but also suitable for high pressure, the closing principle of the stop valve is that the valve plate sealing surface is tightly attached to the valve core sealing surface by the pressure of a valve rod to prevent medium from flowing, the material requirement of the valve core sealing surface is high, and the required wear resistance can be achieved only by adopting wear-resistant alloy.

When the case of stop valve is made in production, if utilize wear-resisting alloy material to process completely, alloy material is harder, and the processing degree of difficulty is big, must lead to the manufacturing cost increase of case, consequently, the utility model provides a welding spare and welded structure thereof.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a welding spare and welded structure thereof to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a welding and welded structure thereof, includes the stop valve body, the left surface fixedly connected with output connection pipe of stop valve body, the mounting hole has been seted up to the right flank of stop valve body, the through-hole has been seted up to the lower surface of stop valve body, the inner wall fixedly connected with input connection pipe of through-hole, the one end fixedly connected with flange that the stop valve body was kept away from to the input connection pipe, the standing groove has been seted up to output connection pipe right-hand member inner wall, the inner wall fixedly connected with internal thread ring of standing groove, the inner wall threaded connection of internal thread ring has the external screw thread ring, the inner wall fixedly connected with case of external screw thread ring, the fixed surface of case is connected with the holding ring, the right-hand.

Preferably, the valve core is of a tubular structure, and the surface of the valve core is in sliding connection with the inner wall of the output connecting pipe.

Preferably, the locating ring is arranged on the left side of the external thread ring, and the left side face of the locating ring is in lap joint with the inner side wall of the placing groove.

Preferably, the first welding ring and the second welding ring are formed by welding wires, and the first welding ring is made of wear-resistant alloy.

Preferably, the surface of the second welding ring is fixedly connected with the inner wall of the output connecting pipe.

Preferably, the lower surface of the connecting flange is provided with a plurality of through holes, and the plurality of through holes are arranged on the lower surface of the connecting flange in an annular array.

Advantageous effects

The utility model provides a welding piece and welded structure thereof possesses following beneficial effect:

1. this welding piece and welded structure thereof, through setting up case and first welding ring, becomes first welding ring with the welding wire welding at the terminal surface of case, and first welding ring acts as the sealed face of case after processing, and first welding ring is small, and the processing cutting output is little, and under the condition that satisfies the sealed face wear resistance requirement of case, has reduced wear-resisting alloy material's use to realize practicing thrift manufacturing cost's effect.

2. This welding piece and welded structure thereof, through setting up the output connection pipe, internal thread ring, external thread ring, holding ring and second welding ring, after the processing of the first welding ring on the case is accomplished, together with case and output connection pipe welded connection through the second welding ring, this kind of connected mode of welding case, the case can take out independent processing to the effect of processing technology is simplified in the realization.

Drawings

FIG. 1 is a schematic view of a front cross-sectional structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic diagram of a valve core in a front-sectional structure.

In the figure: 1 stop valve body, 2 output connection pipe, 3 mounting holes, 4 input connection pipe, 5 flange, 6 internal thread ring, 7 external thread ring, 8 case, 9 holding ring, 10 first welding ring, 11 second welding ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a welding and welded structure thereof, including stop valve body 1, stop valve body 1's left surface fixedly connected with output connection pipe 2, mounting hole 3 has been seted up to stop valve body 1's right flank, the through-hole has been seted up to stop valve body 1's lower surface, the inner wall fixedly connected with input connection pipe 4 of through-hole, input connection pipe 4 keeps away from stop valve body 1's one end fixedly connected with flange 5, the perforation has been seted up to flange 5's lower surface, fenestrate quantity is a plurality of, and a plurality of perforation are the lower surface that the annular array set up at flange 5.

The standing groove has been seted up to 2 right-hand members inner walls of output connection pipe, the inner wall fixedly connected with internal thread ring 6 of standing groove, the inner wall threaded connection of internal thread ring 6 has external thread ring 7, the inner wall fixedly connected with case 8 of external thread ring 7, case 8 is the tubular structure, the surface of case 8 and output connection pipe 2's inner wall sliding connection, case 8's fixed surface is connected with holding ring 9, holding ring 9 sets up the left side at external thread ring 7, the left surface of holding ring 9 and the inside wall overlap joint of standing groove, through the inside part of mounting hole 3 installation stop valve body 1, plug up the right-hand member of case 8, realize the effect that stop valve body 1 prevents the medium circulation.

The right-hand member welding of case 8 has first welded ring 10, the left end welding of case 8 has second welded ring 11, first welded ring 10 and second welded ring 11 are formed by the welding wire welding, the material of first welded ring 10 is wear-resisting alloy, the surface of second welded ring 11 and output connection pipe 2's inner wall fixed connection, second welded ring 11 plays fixed case 8's effect, the material of first welded ring 10 is wear-resisting alloy, play the effect that changes the sealed face material of case 8 right-hand member, frequently open and close case 8, its sealed face is also more durable.

Through setting up case 8 and first welding ring 10, become first welding ring 10 at the terminal surface of case 8 with the welding wire welding, first welding ring 10 is through processing the back, and the surface of first welding ring 10 acts as the sealed face of case 8, and first welding ring 10 is small, and the processing cutting volume is little, and under the condition that satisfies the sealed face wear resistance requirement of case 8, has reduced the use of wear-resisting alloy material to realize the effect of practicing thrift the cost.

Through setting up output connection pipe 2, internal thread ring 6, external thread ring 7, holding ring 9 and second welding ring 11, the back is accomplished in the processing of first welding ring 10 on the case 8, through second welding ring 11 with case 8 and output connection pipe 2 welded connection together, this kind of connection mode of welding case 8, case 8 can take out independent processing to the effect of processing technology is simplified in the realization.

The working principle is as follows: when the welding part and the welding structure are used, firstly, the valve core 8 is roughly processed, then the end surface of the valve core 8 is welded into a first welding ring 10 by welding wires, after cooling, the valve core 8 and the first welding ring 10 are finely processed, the first welding ring 10 is processed and serves as a sealing surface of the valve core 8, then the valve core 8 is installed on the output connecting pipe 2 in a threaded mode by utilizing an internal thread ring 6 and an external thread ring 7, the side surface of a positioning ring 9 is attached to the inner side wall of the output connecting pipe 2 to play a role in determining the position of the valve core 8, then the second welding ring 11 is welded by welding wires to fix the valve core 8 and the output connecting pipe 2, and the valve core 8 can be taken out for independent processing in the connecting mode of the welding valve core 8, so that the processing technology is simplified, meanwhile, the first welding ring 10 is small in size and small in processing cutting amount, and under the condition that the requirement of the wear, the use of wear-resistant alloy materials is reduced, and the material cost and the processing cost are saved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a welding spare and welded structure thereof, includes stop valve body (1), its characterized in that: the left side surface of the stop valve body (1) is fixedly connected with an output connecting pipe (2), the right side surface of the stop valve body (1) is provided with a mounting hole (3), the lower surface of the stop valve body (1) is provided with a through hole, the inner wall of the through hole is fixedly connected with an input connecting pipe (4), one end of the input connecting pipe (4) far away from the stop valve body (1) is fixedly connected with a connecting flange (5), the inner wall of the right end of the output connecting pipe (2) is provided with a placing groove, the inner wall of the placing groove is fixedly connected with an internal thread ring (6), the inner wall of the internal thread ring (6) is in threaded connection with an external thread ring (7), the inner wall of the external thread ring (7) is fixedly connected with a valve core (8), the surface of the valve core (8) is fixedly connected, and a second welding ring (11) is welded at the left end of the valve core (8).

2. A welded article and a welded structure thereof as defined in claim 1, wherein: the valve core (8) is of a tubular structure, and the surface of the valve core (8) is connected with the inner wall of the output connecting pipe (2) in a sliding mode.

3. A welded article and a welded structure thereof as defined in claim 1, wherein: the holding ring (9) is arranged on the left side of the external thread ring (7), and the left side face of the holding ring (9) is in lap joint with the inner side wall of the placing groove.

4. A welded article and a welded structure thereof as defined in claim 1, wherein: the first welding ring (10) and the second welding ring (11) are formed by welding wires, and the first welding ring (10) is made of wear-resistant alloy.

5. A welded article and a welded structure thereof as defined in claim 1, wherein: the surface of the second welding ring (11) is fixedly connected with the inner wall of the output connecting pipe (2).

6. A welded article and a welded structure thereof as defined in claim 1, wherein: the lower surface of the connecting flange (5) is provided with a plurality of through holes, and the plurality of through holes are arranged on the lower surface of the connecting flange (5) in an annular array.