CN213105215U

CN213105215U - Nonrust steel pipe welding protection device

Info

Publication number: CN213105215U
Application number: CN202021855431.3U
Authority: CN
Inventors: 托慧英
Original assignee: Liaoning Xiaoying New Material Manufacturing Co ltd
Current assignee: Liaoning Xiaoying New Material Manufacturing Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-05-04
Anticipated expiration: 2030-08-31

Abstract

The utility model provides a nonrust steel pipe welding protection device relates to nonrust steel pipe welding technical field, including protection device body and gas-supply pipe one, the inside bottom fixed mounting of protection device body has two fixed plates, and the equal fixed mounting in middle part of fixed plate has the bearing. The utility model discloses in, through installing ring lid and fixed block, the inner circle radius of ring lid is unanimous with the outer lane radius of nonrust steel pipe, the outer lane radius of fixed block is unanimous with the inner circle radius of nonrust steel pipe, when protective gas in the nitrogen cylinder passes through the gas-supply pipe earlier on when the stainless steel pipe flows, because the ring lid can closely the lock at the mouth of pipe of nonrust steel pipe, make the mouth of pipe that the external air can not nonrust steel pipe enter into the inside of nonrust steel pipe, when protective gas is exported from the gas pocket, along the direction of air current, block external gas, reduce oxidation reaction's emergence, improve welded quality.

Description

Nonrust steel pipe welding protection device

Technical Field

The utility model relates to a nonrust steel pipe welding technical field especially relates to a nonrust steel pipe welding protection device.

Background

Stainless steel pipe uses comparatively extensively in our life, for better use, can all weld stainless steel pipe usually, stainless steel pipe is in the welded time, solder joint department has a large amount of high temperatures, and stainless steel pipe has very active chemical property under the high temperature, make stainless steel pipe internal oxidation reaction easily take place, influence stainless steel welded quality, so usually stainless steel is in the welded time, can spray protective gas and protect stainless steel pipe, but when spraying protective gas, the external gas gets into from the stainless steel mouth of pipe easily, and the gas-supply pipe is difficult to be accomodate, the current technical consideration is not comprehensive, have following drawback:

1. during welding, protective gas is usually sprayed to the welding position of the stainless steel pipe, but during spraying, external gas easily enters the stainless steel pipe along the pipe orifice of the stainless steel pipe, and the welding quality is affected.

2. The existing protective gas infusion mode is to insert the gas pipe directly into the welded stainless steel equipment, and when the protective gas infusion mode is not used, the gas pipe is not convenient to store for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a stainless steel pipe welding protection device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a stainless steel pipe welding protection device comprises a protection device body and a first gas pipe, wherein two fixed plates are fixedly mounted at the inner bottom end of the protection device body, bearings are fixedly mounted in the middle of the fixed plates, one side, far away from the fixed plates, of each bearing is fixedly connected with a rotating rod, a clamping block is arranged in each rotating rod in an embedded mode, a crank is fixedly mounted on the left side of each clamping block, a fixing ring is fixedly mounted between the inner portion of each rotating rod and the crank, a first gas pipe is arranged in each fixed plate in an embedded mode, the first gas pipe surrounds the surface of each rotating rod, a ring cover is arranged in each gas pipe in an embedded mode, one side, far away from the rotating rods, of each gas pipe in the embedded mode, a fixed block is fixedly mounted in the middle of each ring cover, each gas pipe penetrates through the fixed block and is fixedly connected with a gas hole, a stainless steel pipe is arranged in, the top embedding of nitrogen cylinder is provided with the three-way valve, the right side of three-way valve is provided with gas-supply pipe two, the both sides of three-way valve pass through the pipe through connection gas-supply pipe one and gas-supply pipe two.

Preferably, the radius of the inner ring of the circular ring cover is consistent with the radius of the outer ring of the stainless steel pipe, and the radius of the outer ring of the fixed block is consistent with the radius of the inner ring of the stainless steel pipe.

Preferably, a sealing ring is arranged at the position where the circular ring cover is contacted with the stainless steel pipe.

Preferably, the top surface of the protection device body is hollow.

Preferably, an air hole is formed in one side, far away from the three-way valve, of the second air conveying pipe, and the air hole is funnel-shaped.

Preferably, the front surface of the protection device body is provided with a groove.

Preferably, a gear is fixedly mounted on one side of the clamping block close to the fixing ring, and the gear on the clamping block and the gear on the fixing ring are matched.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, through installing ring lid and fixed block, the inner circle radius of ring lid is unanimous with the outer lane radius of nonrust steel pipe, the outer lane radius of fixed block is unanimous with the inner circle radius of nonrust steel pipe, when protective gas in the nitrogen cylinder passes through the gas-supply pipe earlier on when the stainless steel pipe flows, because the ring lid can closely the lock at the mouth of pipe of nonrust steel pipe, make the mouth of pipe that the external air can not nonrust steel pipe enter into the inside of nonrust steel pipe, when protective gas is exported from the gas pocket, along the direction of air current, block external gas, reduce oxidation reaction's emergence, improve welded quality.

2. Secondly, through installing fixture block and solid fixed ring, one side fixed mounting that fixture block and solid fixed ring are close to the other side has the gear, the supporting setting of gear on fixture block and the solid fixed ring, when finishing using, clockwise rotation crank, collect gas-supply pipe one between the fixed plate through the bull stick, when the gas hose is collected finishing, inwards impel the crank for the gear separation on fixture block and the solid fixed ring, the crank embedding is at the inslot that the front of protection device body was seted up, it is fixed, be convenient for collect.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a right side sectional view of the middle protective device body of the present invention;

fig. 3 is an enlarged schematic structural view of a point a in fig. 2 according to the present invention;

FIG. 4 is a schematic view of a partial structure of the ring cover of the present invention;

fig. 5 is a schematic view of a local structure of the middle fixing plate of the present invention.

In fig. 1 to 5, the correspondence between the part names or lines and the reference numbers is:

a protection device body 1; a nitrogen gas cylinder 101; a fixing plate 102; a crank 103; a three-way valve 104; a rotary bar 105; a latch 106; a bearing 107; a fixed ring 108; a first gas transmission pipe 2; a ring cover 3; air holes 4; a fixed block 5; a stainless steel pipe 6; and a second gas delivery pipe 7.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the utility model provides a stainless steel pipe welding protection device, which comprises a protection device body 1 and a first gas pipe 2, wherein two fixing plates 102 are fixedly arranged at the bottom end inside the protection device body, bearings 107 are fixedly arranged at the middle parts of the fixing plates 102, a rotating rod 105 is fixedly connected to one side of each bearing 107 far away from the fixing plate 102, a clamping block 106 is embedded inside the rotating rod 105, a crank 103 is fixedly arranged at the left side of the clamping block 106, a fixing ring 108 is fixedly arranged between the inside of the rotating rod 105 and the crank 103, the first gas pipe 2 is embedded inside the fixing plate 102, the first gas pipe 2 surrounds the surface of the rotating rod 105, a ring cover 3 is embedded at one side of the first gas pipe 2 far away from the rotating rod 105, a fixing block 5 is fixedly arranged at the middle part of the ring cover 3, the first gas pipe 2 penetrates through the fixing block 5 and is fixedly connected with a gas hole 4, a stainless, the inside bottom fixed mounting of protection device body 1 has nitrogen cylinder 101, and the top embedding of nitrogen cylinder 101 is provided with three-way valve 104, and the right side of three-way valve 104 is provided with air pipe two 7, and the both sides of three-way valve 104 are through connection air pipe one 2 and air pipe two 7 through the pipe.

Further, the radius of the inner ring of the ring cover 3 is consistent with the radius of the outer ring of the stainless steel pipe 6, and the radius of the outer ring of the fixing block 5 is consistent with the radius of the inner ring of the stainless steel pipe 6, so that the ring cover 3 can be tightly buckled at the pipe orifice of the stainless steel pipe 6, and the external air is prevented from entering the stainless steel pipe 6 from the pipe orifice of the stainless steel pipe 6.

Furthermore, a sealing ring is arranged at the position where the ring cover 3 is in contact with the stainless steel pipe 6, so that the sealing property between the ring cover 3 and the stainless steel pipe 6 is enhanced.

Further, the top surface of the protection device body 1 is hollow, so that the three-way valve 104 can be conveniently opened.

Further, one side of the second gas conveying pipe 7, which is far away from the three-way valve 104, is provided with a gas hole 4, and the gas hole 4 is funnel-shaped, so that the position range of the protective gas injection is increased.

Further, the front of the protection device body 1 is provided with a groove, one side of the fixture block 106 and the fixing ring 108 close to each other is fixedly provided with a gear, the fixture block 106 and the gear on the fixing ring 108 are arranged in a matched mode, when the protection device is required to be used, the crank 103 is pulled towards one side far away from the protection device body 1, the gear on the fixture block 106 and the gear on the fixing ring 108 are embedded, the crank 103 rotates anticlockwise, the rotating rod 105 rotates in the fixing plate 102 to drive the first air pipe 2 to be pulled outwards, when the protection device is used, the crank 103 rotates clockwise, the first air pipe 2 is collected between the fixing plates 2 through the rotating rod 105, when the air hose 2 is collected completely, the crank 103 is pushed inwards, the gear on the fixture block 106 and the fixing ring 108 is separated, the crank 103 is embedded into the groove formed in the front of the protection device body 1 and is fixed and convenient.

The working principle is as follows: when the protective device is used, firstly, the crank handle 103 is pulled towards one side far away from the protective device body 1, so that the clamping block 106 is embedded with the gear on the fixing ring 108, then, the crank handle 103 is rotated anticlockwise, the rotating rod 105 rotates in the fixing plate 102 to drive the first air delivery pipe 2 to be pulled outwards, the annular cover 3 is embedded on the outer surface of the stainless steel pipe 6, so that the air hole 4 and the fixing block 5 are positioned inside the stainless steel pipe 6, then, the three-way valve 104 is opened, so that protective gas in the nitrogen gas bottle 101 flows into the stainless steel pipe 6 through the first air delivery pipe 2, and simultaneously the protective gas is sprayed to a welding part through the second air delivery pipe 7, finally, when the use is finished, the annular cover 3 is taken out from the pipe orifice of the stainless steel pipe 6, the crank handle 103 is rotated clockwise, the first air delivery pipe 2 is collected between the fixing plates 2 through the rotating rod 105, and when the collection of the air delivery hose, the latch 106 is separated from the gear of the fixing ring 108, and the crank 103 is fitted into a groove formed in the front surface of the protector body 1 to fix the same.

The embodiments of the present application have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The stainless steel pipe welding protection device comprises a protection device body (1) and a first gas conveying pipe (2), and is characterized in that two fixing plates (102) are fixedly mounted at the bottom end of the interior of the protection device body, a bearing (107) is fixedly mounted in the middle of each fixing plate (102), a rotating rod (105) is fixedly connected to one side, away from the fixing plates (102), of each bearing (107), a clamping block (106) is arranged in the rotating rod (105) in an embedded mode, a crank (103) is fixedly mounted on the left side of each clamping block (106), a fixing ring (108) is fixedly mounted between the interior of each rotating rod (105) and the crank (103), a first gas conveying pipe (2) is arranged in the embedded mode of the interior of each fixing plate (102), the first gas conveying pipe (2) surrounds the surface of each rotating rod (105), and a circular ring cover (3) is arranged in one side, away from the rotating rod (105), of the first, the middle part fixed mounting of ring lid (3) has fixed block (5), gas pipe (2) run through fixed block (5) fixed connection and have gas pocket (4), the embedding is provided with nonrust steel pipe (6) between ring lid (3) and fixed block (5), the inside bottom fixed mounting of protection device body (1) has nitrogen cylinder (101), the top embedding of nitrogen cylinder (101) is provided with three-way valve (104), the right side of three-way valve (104) is provided with gas-supply pipe two (7), pipe through connection gas-supply pipe (2) and gas-supply pipe two (7) are passed through to the both sides of three-way valve (104).

2. The stainless steel pipe welding protection device according to claim 1, wherein the inner circle radius of the circular ring cover (3) is consistent with the outer circle radius of the stainless steel pipe (6), and the outer circle radius of the fixed block (5) is consistent with the inner circle radius of the stainless steel pipe (6).

3. The stainless steel pipe welding protection device according to claim 1, wherein a sealing ring is arranged at the position where the ring cover (3) is contacted with the stainless steel pipe (6).

4. The stainless steel pipe welding protection device according to claim 1, characterized in that the top surface of the protection device body (1) is hollow.

5. The stainless steel pipe welding protection device as claimed in claim 1, wherein an air hole (4) is formed in one side, away from the three-way valve (104), of the second air delivery pipe (7), and the air hole (4) is funnel-shaped.

6. The stainless steel pipe welding protection device according to claim 1, wherein the front surface of the protection device body (1) is provided with a groove.

7. The welding protector for the stainless steel pipe according to claim 1, wherein a gear is fixedly installed on one side of the fixture block (106) and the fixing ring (108) close to each other, and the gear on the fixture block (106) and the gear on the fixing ring (108) are matched.