CN211889556U - Welding and gas sealing tool for silencer - Google Patents

Abstract

The utility model discloses a muffler welding seals gas frock belongs to muffler welding field. It is including sealing gas spare and mounting, it is the cylinder structure to seal gas spare lower part, the mounting has with sealing gas spare assorted fixed through hole, seal gas spare and set up in the fixed through hole and with mounting fixed connection, it is equipped with along its axially extended protruding muscle to seal gas spare lower part outside. The utility model discloses can carry out effectual protection to the copper pipe wall of the two department of contact when sealing the gas frock and inserting the copper pipe, prevent that the copper pipe wall from taking place the oxidation.

Description

Welding and gas sealing tool for silencer

Technical Field

The utility model belongs to muffler welding field, more specifically say, relate to a muffler welding seals gas frock.

Background

Silencers are a device that prevents sound transmission while allowing airflow through, and are an important measure for eliminating aerodynamic noise. The silencer is a device for reducing noise, which is installed on an airflow channel of air power equipment (such as a blower, an air compressor, a boiler exhaust port, a generator, a water pump, an air conditioner and other equipment with high noise at the exhaust port) or in an air inlet and exhaust system. The main structure of the silencer is generally a hollow cylinder structure, and two ends of the cylinder are necking structures for welding with other pipelines. For example, in the air conditioner silencer, two copper pipes are generally required to be welded at two ends of the silencer, so that the silencer and other equipment can be conveniently installed. Therefore, when manufacturing air conditioner silencer accessories, generally, a copper pipe needs to be welded at two ends of the silencer respectively, so that the subsequent installation of the silencer is facilitated. In addition, because the welding temperature when welding between muffler and copper pipe is too high, make muffler and copper pipe receive the damage easily, consequently need fill protective gas, usually nitrogen gas to the one end of muffler, then set up the gas frock that seals who is used for preventing protective gas to scatter and disappear in a large number at the other end of muffler. At present, some welding gas sealing tools aiming at the silencer exist in the market.

The existing welding and gas sealing tool for the silencer, as shown in fig. 1, is a cylindrical structure matched with the size of a copper pipe, wherein a circle of annular structure with the diameter larger than that of the copper pipe is arranged on the outer side of the middle position of the cylindrical structure, and the annular structure abuts against the upper end of the copper pipe to prevent the gas sealing tool from falling into the copper pipe. During welding, the gas sealing tool is inserted into the copper pipe at the welding end, the gas sealing effect is poor due to the fact that the gas sealing tool cannot shake, and the lower portion of the gas sealing tool can be generally tightly attached to the inner wall of the copper pipe. However, since the gap between the gas sealing tool and a portion of the copper pipe tightly attached to the copper pipe is extremely small or even not present, the protection of the copper pipe by the protective gas is not perfect, so that the copper pipe at the position is oxidized and forms oxide skin during welding, which affects the quality of the copper pipe on one hand, and also easily affects the welding of the copper pipe on the other hand.

Also, for example, the Chinese patent application number is: CN201820887549.0, published date: patent literature of 26/2/2019 discloses a welding tool, wherein a positioning device is arranged on a bottom plate, the positioning device sequentially comprises a clamping seat a, a welding piece clamping seat, a clamping seat b and a nitrogen pipe base from left to right, the clamping seat a is connected with an air blocking sleeve through a spring, the welding piece is clamped on the welding piece clamping seat, and one end of the welding piece is inserted into the air blocking sleeve; the other end of the welding part is clamped on the clamping seat b, a nitrogen pipe quick connector is arranged on the nitrogen pipe base, and the nitrogen pipe is connected with the welding part through a nitrogen pipe connector; the bottom plate is connected with the rotary cylinder, the bottom plate is controlled to move left and right through the rotary cylinder, and the rotary cylinder is connected with the welding disc clamping seat through a screw rod. Simple to operate is swift, and the circumference rotary motion through rotatory cylinder turns into moving about the bottom plate, is favorable to improving welding efficiency. Be equipped with the stifled gas sleeve promptly in this scheme, and in order to avoid from the copper outside to lead to the fact the influence to welding process when welding to the copper pipe, generally all can adopt to block up in gas or the gas frock inserts the copper pipe rather than inserting the copper pipe in the gas or the gas frock of blocking up, consequently, it also has the above-mentioned problem probably.

Disclosure of Invention

1. Problems to be solved

The copper pipe wall of sealing gas frock and copper pipe contact department when welding to current muffler can not be protected by protective gas perfectly, takes place the problem that the oxidation influences copper pipe quality and welding process easily, the utility model provides a muffler welding seals gas frock can carry out effectual protection to the copper pipe wall of the two contact department when sealing gas frock and inserting the copper pipe, prevents that the copper pipe wall from taking place the oxidation.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides a muffler welding seals gas frock, is including sealing gas spare and mounting, it is the cylinder structure to seal gas spare lower part, the mounting has and seals gas spare assorted fixed through hole, it sets up to seal gas spare in the fixed through hole and with mounting fixed connection, it is equipped with along its axially extended protruding muscle to seal gas spare lower part outside.

As a further improvement of the technical scheme, the convex ribs are provided with a plurality of convex ribs which are uniformly arranged along the circumferential direction of the lower part of the air seal piece.

As a further improvement of the technical scheme, the number of the convex ribs is 3-6.

As a further improvement of the technical scheme, a horizontal limiting pin hole is formed in the fixing piece and penetrates through the inner wall and the outer wall of the fixing piece.

As a further improvement of the technical scheme, the limiting pin holes are provided with a plurality of limiting pin holes which are uniformly distributed along the circumferential direction of the fixing piece.

As a further improvement of the technical scheme, the number of the limiting pin holes is 3-6.

As a further improvement of the technical scheme, the outer side of the upper part of the air sealing piece is provided with threads.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model relates to a muffler welding seals gas frock, through set up protruding muscle in the outside of the position that seals gas spare lower part and copper union coupling, can make and seal gas spare and copper pipe can closely laminate and guarantee the prerequisite of good gas effect of sealing, form the cavity between gas spare lower part and copper pipe lateral wall, thereby make protective gas can get into the cavity, protect the copper pipe lateral wall at this position, prevent this part copper pipe from taking place the oxidation, influence copper pipe quality and welding effect;

(2) the utility model relates to a muffler welding seals gas frock, protruding muscle have a plurality ofly and along the circumference evenly distributed of sealing gas spare lower part, can guarantee on the one hand that the contact with the copper pipe lateral wall is inseparabler, improves and seals the gas effect, and on the other hand has also guaranteed that the spatial distribution who has protected each cavity is even, and protective gas is better to the protective effect of copper pipe lateral wall;

(3) the utility model relates to a muffler welding seals gas frock is equipped with horizontal spacing pinhole in the mounting, can insert the spacer pin and carry out the spacing to the position of sealing the gas piece in fixed through-hole, prevents that the gas piece from taking place to rock in fixed through-hole, improves and seals the gas effect;

(4) the utility model relates to a muffler welding seals gas frock, spacing pinhole have a plurality ofly and along mounting circumference evenly distributed, improved the spacing effect to sealing the gas piece;

(5) the utility model relates to a muffler welding seals gas frock will aerify the frock and divide into and to dismantle the gas piece and the mounting of connecting, and the dismouting of the two is simple, is convenient for clear up and overhaul aerifing the frock, and need not to change whole frock when wherein certain part damages, has reduced cost of maintenance, in addition, adopt this kind of mode can adjust according to actual conditions and seal the gas piece and go deep into behind the position in the copper pipe, the rethread nut will seal gas piece and mounting and connect, and it is convenient to adjust.

Drawings

FIG. 1 is a schematic view of the structure and installation of a conventional gas sealing tool;

FIG. 2 is a schematic view of the installation of the gas sealing tool of the present invention during operation;

FIG. 3 is a front view of the air seal;

FIG. 4 is a top view of the air seal;

FIG. 5 is a front view of the mount;

FIG. 6 is a top view of the fastener;

in the figure: 1. sealing the air; 11. a rib is protruded; 12. a thread; 2. a fixing member; 21. a fixing through hole; 22. a limit pin hole; 3. and a nut.

Detailed Description

The invention will be further described with reference to specific embodiments and drawings.

Examples

As shown in fig. 1, a muffler welding and gas sealing tool is mainly used for sealing protective gas filled in during welding operation between an air conditioner muffler and a copper pipe. The tool mainly comprises an air sealing part 1 for sealing protective gas and a fixing part 2 for fixing the air sealing part 1, and the specific structure and the working principle of the tool are described in detail below.

As shown in fig. 2 and 3, the gas seal member 1 is a stepped cylindrical structure having a diameter that increases from top to bottom, and is mainly divided into an upper portion, a middle portion, and a lower portion according to the difference in diameter. Wherein, the outer side of the upper part is provided with a screw thread 12, and the outer side of the lower part is provided with a convex rib 11 extending along the axial direction of the lower part. The diameter of the lower part of the gas sealing piece 1 is slightly smaller than that of the copper pipe to be welded, and then the gas sealing piece can be in close contact with the side wall of the copper pipe through the convex rib 11. Therefore, when the lower part of the gas sealing part 1 extends into the copper pipe, the gas sealing part 1 can not shake in the copper pipe through the convex ribs 11, the gas sealing effect is improved, and a cavity can be formed between the lower part of the gas sealing part 1 and the side wall of the copper pipe, so that protective gas can enter the cavity to protect the side wall of the copper pipe at the position, and the copper pipe is prevented from being oxidized to influence the quality and the welding effect of the copper pipe.

In addition, protruding muscle 11 has a plurality ofly, along the circumference evenly distributed of sealing gas spare 1 lower part, can guarantee on the one hand that the contact with the copper pipe lateral wall is inseparabler, improves and seals the gas effect, and on the other hand has also guaranteed that the spatial distribution of having protected each cavity is even, and protective gas is better to the protective effect of copper pipe lateral wall. In this embodiment, the number of the ribs 11 is 4.

As shown in fig. 4 and 5, the fixing member 2 has a structure similar to that of the gas seal member 1, but the fixing member 2 has a lower portion with a diameter larger than that of the gas seal member 1 and the copper pipe, and is provided with a fixing through-hole 21 therein, and the fixing through-hole 21 has a shape and a size substantially the same as those of the gas seal member 1 for accommodating the gas seal member 1. When welding muffler and copper pipe, earlier put into the copper pipe and adjust to suitable position with sealing gas spare 1, then, cover mounting 2 in the outside of sealing gas spare 1 from the top, mounting 2 is located the copper pipe tip, again with nut 3 from the top screw in of sealing gas spare 1 upper portion and fastening in the upper end of mounting 2 to make sealing gas spare 1, sealing gas spare 2 and copper pipe fixed connection. This kind of dismouting of mode of connecting can be dismantled is simple, is convenient for clear up and overhaul the gas sealing frock, and need not to change whole frock when wherein certain part damages, has reduced cost of maintenance, in addition, adopts this kind of mode can adjust the position back that gas sealing spare 1 gos deep into in the copper pipe according to actual conditions, and rethread nut 3 will seal gas spare 1 and be connected with mounting 2, and it is convenient to adjust.

It should be mentioned that a horizontal limit pin hole 22 is further provided in the fixing member 2, and the limit pin hole 22 penetrates through the inner and outer walls of the fixing member 2, i.e. the fixing through hole 21 and the outside are communicated. The number of the limiting pin holes 22 is 3-6, in this embodiment 4, and the limiting pin holes are uniformly distributed along the circumferential direction of the fixing piece 2. Spacing pinhole 22 can insert the spacer pin and carry on spacingly to the position of sealing gas spare 1 in fixing hole 21, prevents to seal gas spare 1 and takes place to rock in fixing hole 21, improves and seals the gas effect, and a plurality of spacing pinholes 22 then have further strengthened this kind of spacing effect.

To sum up, the muffler welding of this embodiment seals gas frock can carry out effectual protection to the copper pipe wall of the two department of contact when sealing gas frock and inserting the copper pipe, prevents that the copper pipe wall from taking place the oxidation.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (7)

1. The utility model provides a muffler welding seals gas frock, includes gas sealing member (1) and mounting (2), gas sealing member (1) lower part is the cylinder structure, mounting (2) have with gas sealing member (1) assorted fixing hole (21), gas sealing member (1) sets up in fixing hole (21) and with mounting (2) fixed connection, its characterized in that: and a convex rib (11) extending along the axial direction of the air sealing piece (1) is arranged on the outer side of the lower part of the air sealing piece.

2. The muffler welding and gas sealing tool according to claim 1, wherein: the plurality of convex ribs (11) are uniformly arranged along the circumferential direction of the lower part of the air sealing piece (1).

3. The muffler welding and gas sealing tool according to claim 2, wherein: the number of the convex ribs (11) is 3-6.

4. The muffler welding and gas sealing tool according to claim 1, wherein: horizontal limiting pin holes (22) are formed in the fixing piece (2), and the limiting pin holes (22) penetrate through the inner wall and the outer wall of the fixing piece (2).

5. The muffler welding and gas sealing tool according to claim 4, wherein: the limiting pin holes (22) are provided with a plurality of limiting pin holes and are uniformly distributed along the circumferential direction of the fixing piece (2).

6. The muffler welding and gas sealing tool according to claim 5, wherein: the number of the limiting pin holes (22) is 3-6.

7. The muffler welding and gas sealing tool according to any one of claims 1 to 6, wherein: and the outer side of the upper part of the air sealing piece (1) is provided with a thread (12).

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