Sandblasting and descaling integrated device for inner wall of stainless steel welded pipe

Abstract

The invention belongs to the technical field of sand blasting and descaling, and particularly relates to a stainless steel welded pipe inner wall sand blasting and descaling integrated device which comprises a stainless steel welded pipe body and a main machine, a first side frame is fixedly installed on the left side of the top of the main machine, and a welded pipe positioning assembly is arranged on the first side frame and used for installing the stainless steel welded pipe body; a displacement assembly is arranged on the top of the main machine. According to the device, when the length of a stainless steel welded pipe body is large, during sand blasting treatment, a first side frame can move to the rightmost side, the right end of the stainless steel welded pipe body touches a pressing switch, then an electromagnet is powered on, the electromagnet and a magnetic block magnetically attract each other, in other words, the magnetic block drives a sand blasting straight pipe to move leftwards, and a sealing plug slides in a sand blasting long cylinder; the buffer spring is compressed, and the sand blasting straight pipe drives the spray gun to move leftwards, so that the spray gun can continuously go deep into the stainless steel welded pipe to ensure that all areas of the inner wall are cleaned, and the sand blasting device is suitable for stainless steel welded pipes with different lengths.

Description

Technical Field

[0001] The invention relates to a sandblasting and descaling device, in particular to an integrated sandblasting and descaling device for the inner wall of a stainless steel welded pipe. Background Art

[0002] Stainless steel pipes are divided into stainless steel welded pipes and seamless stainless steel pipes. With the development of science and technology, the varieties and specifications of stainless steel welded pipes are increasing, and they have replaced seamless stainless steel pipes in more and more fields, especially in heat exchange equipment pipes, decorative pipes, medium and low pressure fluid pipes, etc. The weld seams of stainless steel welded pipes need to be polished during production, so that the transition between the pipe body and the weld seams of the stainless steel welded pipes is uniform, which improves the strength of the stainless steel welded pipes and makes them more beautiful.

[0003] For example, the prior art with authorization announcement number CN217665166U discloses a device for cleaning the inner wall of a stainless steel welded pipe with an arc, comprising a cleaning box, wherein the interior of the cleaning box is fixedly connected with a curved stainless steel pipe, one side of the curved stainless steel pipe is fixedly connected with a steel pipe fixing mechanism, one side of the steel pipe fixing mechanism is sleeved with a plug, one side of the cleaning box is provided with a cylinder mechanism, and one side of the cylinder mechanism is provided with a vibration mechanism. The device for cleaning the inner wall of a stainless steel welded pipe with an arc is achieved by fixing the curved stainless steel pipe inside the cleaning box, connecting a water source to the upper pipe port inside the cleaning box, and then starting the cylinder. The cylinder pushes a knocking block on one side, and the knocking block hits the side wall of the steel pipe. Under the impact of the cylinders on both sides, the internal water source will vibrate the dirt on the inner wall. By adding vibration in water, the inner wall of the stainless steel welded pipe can be effectively cleaned, thereby improving the cleaning efficiency.

[0004] In the above technology, the side wall of the steel pipe is hit by a knocking block, and the cleaning accuracy of this method is poor; and it cannot perform descaling treatment on stainless steel welded pipes of different lengths, and its applicability is greatly reduced. In view of this, the present invention designs an integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe. Summary of the invention

[0005] The main purpose of the present invention is to provide an integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe, so as to effectively solve the problems raised by the inventor in the above-mentioned background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A stainless steel welded pipe inner wall sandblasting and descaling integrated device comprises a stainless steel welded pipe main body and a main machine, a first side frame is fixedly installed on the left side of the top of the main machine, and a welded pipe positioning assembly is provided on the first side frame, the welded pipe positioning assembly is used to install the stainless steel welded pipe main body, a displacement assembly is provided on the top of the main machine, and the displacement assembly is used to drive the first side frame to move, a second side frame is fixedly installed on the right side of the top of the main machine, and an abrasive box is fixedly installed on the upper end of the second side frame, a sandblasting long cylinder is inlaid on the second side frame, and a sealing plug is slidably installed inside the sandblasting long cylinder, and the right side of the sealing plug is a sandblasting chamber, and the left side is a movable chamber, a sandblasting straight pipe is inlaid in the sealing plug, and the right end of the sandblasting straight pipe faces the sandblasting chamber, the left end of the sandblasting straight pipe extends to the outside of the sandblasting long cylinder and is fixedly connected to the sandblasting assembly, and a descaling assembly is provided on the sandblasting straight pipe, and a conveying assembly is fixedly connected to the bottom of the abrasive box, and the conveying assembly leads to the sandblasting chamber.

[0008] Preferably, the conveying assembly includes a centrifugal pump, a first conveying pipe and a second conveying pipe. The centrifugal pump is fixedly installed on the top of the sandblasting cylinder, and the input end and output end of the centrifugal pump are respectively fixedly connected to the first conveying pipe and the second conveying pipe. The other end of the first conveying pipe is fixedly connected to the bottom of the abrasive box, and the second conveying pipe is fixedly connected to the sandblasting cylinder and communicates with the sandblasting chamber.

[0009] Preferably, the sandblasting assembly includes a spray gun and a discharge valve, the spray gun is fixedly mounted on the left end of the sandblasting straight pipe, and evenly distributed discharge valves are fixedly mounted on the outside of the spray gun, the discharge valve only allows fluid to be sprayed out of the spray gun, and the size of the spray gun is smaller than the size of the stainless steel welded pipe body.

[0010] Preferably, the descaling assembly includes a support rod and a descaling brush, the surface of the sandblasting straight tube is fixedly connected with support rods distributed in a circular array, and the other end of the support rod is fixedly connected with a descaling brush, the descaling brush is located on the right side of the spray gun, and the stainless steel welded pipe body is fixed on the left side of the spray gun.

[0011] Preferably, the welding pipe positioning assembly includes a support block, a push screw, a rotating wheel and a clamping head. The right side of the first side frame is fixedly installed with a support block distributed in an upper and lower position, and push screws are threadedly installed on the two support blocks. The adjacent ends of the two push screws are fixedly connected with the clamping heads. A through hole is opened on the first side frame. The stainless steel welding pipe body passes through the through hole and is located between the two clamping heads. The separated ends of the two push screws are fixedly connected with the rotating wheel, and the spray gun is coaxially arranged with the stainless steel welding pipe body.

[0012] Preferably, the displacement assembly includes a slide, a movable table, an X-axis screw, a guide rod and a servo motor. A slide is opened on the left side of the top of the main machine, and the movable table is slidably installed in the slide, the X-axis screw is rotatably installed in the slide, and the movable table is threadedly installed on the X-axis screw, the guide rod is fixedly installed in the slide, and the movable table is slidably sleeved on the guide rod, the first side frame is fixedly installed on the top of the movable table, the servo motor is fixedly installed on the side of the main machine, and the output end of the servo motor is fixedly connected to the X-axis screw.

[0013] Preferably, an electromagnet is fixedly installed in the movable cavity, and the middle part of the electromagnet is hollowed out, the sandblasting straight tube passes through the electromagnet, and a magnetic block is fixedly installed on the part of the sandblasting straight tube located in the movable cavity, a buffer spring is fixedly connected between the magnetic block and the electromagnet, and the sandblasting straight tube passes through the buffer spring.

[0014] Preferably, a switch seat is fixedly installed on the left side of the top of the sandblasting long cylinder, and a push switch is installed on the switch seat, the push switch is electrically connected to the electromagnet, and the push switch is facing the direction of the spray gun.

[0015] In view of this, compared with the prior art, the beneficial effects of the present invention are:

[0016] (i) In the present application, the abrasive is injected into the abrasive box through the feed pipe for standby use, the main body of the stainless steel welded pipe to be processed is passed through the through hole and is located between the two clamping heads, the two rotating wheels are rotated to rotate the two advancing screws, and then the two clamping heads are closed together to clamp the main body of the stainless steel welded pipe. This method can also be applied to the fixation of stainless steel welded pipes of different diameters.

[0017] (ii) In the present application, the servo motor and the centrifugal pump work during sandblasting, and the servo motor drives the X-axis screw to rotate, and then the moving platform slowly moves to the right along the guide rod, so that the first side frame drives the stainless steel welded pipe body to move to the right through the welded pipe positioning assembly until the spray gun moves into the stainless steel welded pipe body, and the centrifugal pump conveys the abrasive in the abrasive box to the sandblasting chamber through the first conveying pipe and the second conveying pipe, and enters the spray gun through the sandblasting straight pipe, and is finally sprayed out by each discharge valve to realize sandblasting treatment of the inner wall of the stainless steel welded pipe, and cooperates with the rear support rod and the descaling brush to make the descaling brush clean the inner wall, so as to achieve the purpose of simultaneous sandblasting and descaling, thereby improving the treatment effect.

[0018] (III) In the present application, when the length of the main body of the stainless steel welded pipe is relatively large, during the sandblasting process, the first side frame will move to the far right, so that the right end of the main body of the stainless steel welded pipe touches the push switch, and then the electromagnet is energized, so that the electromagnet and the magnetic block are magnetically attracted, that is, the magnetic block drives the sandblasting straight pipe to move to the left, the sealing plug slides in the sandblasting long tube, the buffer spring is compressed, and the sandblasting straight pipe will drive the spray gun to move to the left, so that the spray gun can continue to penetrate deep into the stainless steel welded pipe to ensure that all areas of the inner wall are cleaned. It is suitable for stainless steel welded pipes of different lengths.

[0019] (IV) In the present application, during the movement of the sealing plug to the left, due to the obstruction of the sealing plug, the right end of the sandblasting straight pipe always leads to the sandblasting chamber, thereby not affecting the operation of the conveying component, so that the sandblasting process can continue until the inner wall of the stainless steel welded pipe body is cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure shows a cross-sectional view of the structure of the integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe provided by the present invention;

[0021] Figure 2 Shown Figure 1 Schematic diagram of the local structure in;

[0022] Figure 3 Shown Figure 2 The enlarged schematic diagram of point A in the middle;

[0023] Figure 4 Shown is a side view of the connection between the spray gun and the sandblasting straight pipe;

[0024] Figure 5 Shown Figure 1 Schematic diagram of the first side frame after it moves to the right;

[0025] Figure 6 Shown is a top view of the displacement assembly.

[0026] icon:

[0027] 1-Stainless steel welded pipe body;

[0028] 2-main machine; 201-first side frame; 202-welding pipe positioning assembly; 203-support block; 204-advancing screw; 205-rotating wheel; 206-clamping head; 207-slide; 208-moving platform; 209-X-axis screw; 210-guide rod; 211-servo motor;

[0029] 3- Second side frame;

[0030] 4-abrasive box; 401-centrifugal pump; 402-first delivery pipe; 403-second delivery pipe;

[0031] 5-sandblasting long tube; 501-sealing plug; 502-sandblasting straight tube; 503-spray gun; 504-discharge valve; 505-support rod; 506-de-scaling brush; 507-electromagnet; 508-magnetic block; 509-buffer spring; 510-switch seat; 511-press switch. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-6 , the present invention provides the following embodiments:

[0034] An integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe comprises a stainless steel welded pipe body 1 and a main machine 2, a first side frame 201 is fixedly installed on the left side of the top of the main machine 2, and a welded pipe positioning component 202 is provided on the first side frame 201, and the welded pipe positioning component 202 is used to install the stainless steel welded pipe body 1, a displacement component is provided on the top of the main machine 2, and the displacement component is used to drive the first side frame 201 to move, a second side frame 3 is fixedly installed on the right side of the top of the main machine 2, and an abrasive box 4 is fixedly installed on the upper end of the second side frame 3, and the top of the abrasive box 4 is fixedly installed A feeding pipe is fixedly connected, a sandblasting cylinder 5 is embedded on the second side frame 3, and a sealing plug 501 is slidably installed inside the sandblasting cylinder 5, and the right side of the sealing plug 501 is a sandblasting chamber, and the left side is a movable chamber, a sandblasting straight pipe 502 is embedded in the sealing plug 501, and the right end of the sandblasting straight pipe 502 faces the sandblasting chamber, the left end of the sandblasting straight pipe 502 extends to the outside of the sandblasting cylinder 5 and is fixedly connected with a sandblasting assembly, and a descaling assembly is provided on the sandblasting straight pipe 502, and a conveying assembly is fixedly connected to the bottom of the abrasive box 4, and the conveying assembly leads to the sandblasting chamber.

[0035] Specifically, the conveying assembly includes a centrifugal pump 401, a first conveying pipe 402 and a second conveying pipe 403. The centrifugal pump 401 is fixedly installed on the top of the sandblasting cylinder 5, and the input end and output end of the centrifugal pump 401 are respectively fixedly connected to the first conveying pipe 402 and the second conveying pipe 403. The other end of the first conveying pipe 402 is fixedly connected to the bottom of the abrasive box 4, and the second conveying pipe 403 is fixedly connected to the sandblasting cylinder 5 and communicates with the sandblasting chamber.

[0036] Specifically, the sandblasting assembly includes a spray gun 503 and a discharge valve 504. The spray gun 503 is fixedly installed at the left end of the sandblasting straight pipe 502, and the outer side of the spray gun 503 is fixedly installed with evenly distributed discharge valves 504. The discharge valve 504 only allows the fluid to be sprayed out from the spray gun 503. The size of the spray gun 503 is smaller than the size of the stainless steel welded pipe body 1. The descaling assembly includes a support rod 505 and a descaling brush 506. The surface of the sandblasting straight pipe 502 is fixedly connected with support rods 505 distributed in a circular array, and the other end of the support rod 505 is fixedly connected with a descaling brush 506. The descaling brush 506 is located on the right side of the spray gun 503, and the stainless steel welded pipe body 1 is fixed on the left side of the spray gun 503.

[0037] Specifically, the welding pipe positioning assembly 202 includes a support block 203, a push screw 204, a rotating wheel 205 and a clamping head 206. The right side of the first side frame 201 is fixedly installed with a support block 203 distributed in an upper and lower position, and the two support blocks 203 are threadedly installed with push screws 204. The two push screws 204 are fixedly connected to the clamping head 206 at one end thereof. A through hole is opened on the first side frame 201. The stainless steel welding pipe body 1 passes through the through hole and is located between the two clamping heads 206. The two push screws 204 are fixedly connected to the rotating wheel 205 at one end thereof, and the spray gun 503 is coaxially arranged with the stainless steel welding pipe body 1.

[0038] Specifically, the welding pipe positioning assembly 202 includes a support block 203, a push screw 204, a rotating wheel 205 and a clamping head 206. The right side of the first side frame 201 is fixedly installed with a support block 203 distributed in an upper and lower position, and the two support blocks 203 are threadedly installed with push screws 204. The two push screws 204 are fixedly connected to the clamping head 206 at one end thereof. A through hole is opened on the first side frame 201. The stainless steel welding pipe body 1 passes through the through hole and is located between the two clamping heads 206. The two push screws 204 are fixedly connected to the rotating wheel 205 at one end thereof, and the spray gun 503 is coaxially arranged with the stainless steel welding pipe body 1.

[0039] Specifically, an electromagnet 507 is fixedly installed in the movable cavity, and the middle part of the electromagnet 507 is hollowed out, the sandblasting straight tube 502 passes through the electromagnet 507, and a magnetic block 508 is fixedly installed on the part of the sandblasting straight tube 502 located in the movable cavity, a buffer spring 509 is fixedly connected between the magnetic block 508 and the electromagnet 507, the sandblasting straight tube 502 passes through the buffer spring 509, a switch seat 510 is fixedly installed on the left side of the top of the sandblasting long tube 5, and a push switch 511 is installed on the switch seat 510, the push switch 511 is electrically connected to the electromagnet 507, and the push switch 511 is facing the direction of the spray gun 503.

[0040] The specific implementation of this embodiment is as follows: the abrasive is injected into the abrasive box 4 through the feed pipe for standby use, the stainless steel welded pipe body 1 to be processed is passed through the through hole and is located between the two clamping heads 206, the two rotating wheels 205 are rotated to rotate the two advancing screws 204, and then the two clamping heads 206 are closed together to clamp the stainless steel welded pipe body 1. This method can also be applied to the fixing of stainless steel welded pipes of different diameters;

[0041] During sandblasting, the servo motor 211 and the centrifugal pump 401 work, and the servo motor 211 drives the X-axis screw rod 209 to rotate, and then the moving platform 208 slowly moves to the right along the guide rod 210, so that the first side frame 201 drives the stainless steel welded pipe body 1 to move to the right through the welded pipe positioning assembly 202, until the spray gun 503 moves into the stainless steel welded pipe body 1, and the centrifugal pump 401 conveys the abrasive in the abrasive box 4 to the sandblasting chamber through the first conveying pipe 402 and the second conveying pipe 402, and enters the spray gun 503 through the sandblasting straight pipe 502, and finally sprays out from each discharge valve 504, so as to realize sandblasting treatment on the inner wall of the stainless steel welded pipe, and cooperates with the rear support rod 505 and the descaling brush 506, so that the descaling brush 506 cleans the inner wall, so as to achieve the purpose of synchronous sandblasting and descaling, thereby improving the treatment effect;

[0042] When the length of the stainless steel welded pipe body 1 is relatively large, during the sandblasting process, the first side frame 201 will move to the far right, so that the right end of the stainless steel welded pipe body 1 touches the push switch 511, and then the electromagnet 507 is energized, so that the electromagnet 507 and the magnetic block 508 are magnetically attracted to each other, that is, the magnetic block 508 drives the sandblasting straight pipe 502 to move left, the sealing plug 501 slides in the sandblasting long tube 5, the buffer spring 509 is compressed, and the sandblasting straight pipe 502 will drive the spray gun 503 to move left, so that the spray gun 503 can continue to penetrate deep into the stainless steel welded pipe to ensure that all areas of the inner wall are cleaned, which is suitable for stainless steel welded pipes of different lengths;

[0043] When the sealing plug 501 moves to the left, the right end of the sandblasting straight pipe 502 always leads to the sandblasting chamber due to the obstruction of the sealing plug 501, so as not to affect the operation of the conveying component, and the sandblasting process can continue until the inner wall of the stainless steel welded pipe body 1 is cleaned.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe, characterized in that: The invention comprises a stainless steel welded pipe body (1) and a main machine (2), wherein a first side frame (201) is fixedly installed on the left side of the top of the main machine (2), and a welded pipe positioning assembly (202) is provided on the first side frame (201), and the welded pipe positioning assembly (202) is used to install the stainless steel welded pipe body (1), a displacement assembly is provided on the top of the main machine (2), and the displacement assembly is used to drive the first side frame (201) to move, a second side frame (3) is fixedly installed on the right side of the top of the main machine (2), and an abrasive box (4) is fixedly installed on the upper end of the second side frame (3), and the second side frame (3) is fixedly installed on the upper end of the second side frame (3). ) is inlaid with a sandblasting long tube (5), and a sealing plug (501) is slidably installed inside the sandblasting long tube (5), and the right side of the sealing plug (501) is a sandblasting chamber, and the left side is a movable chamber, a sandblasting straight tube (502) is inlaid in the sealing plug (501), and the right end of the sandblasting straight tube (502) faces the sandblasting chamber, the left end of the sandblasting straight tube (502) extends to the outside of the sandblasting long tube (5) and is fixedly connected to a sandblasting component, and a descaling component is provided on the sandblasting straight tube (502), and the bottom of the abrasive box (4) is fixedly connected to a conveying component, and the conveying component leads to the sandblasting chamber.

2. The integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe according to claim 1, characterized in that: The conveying assembly comprises a centrifugal pump (401), a first conveying pipe (402) and a second conveying pipe (403); the centrifugal pump (401) is fixedly installed on the top of the sandblasting cylinder (5); the input end and the output end of the centrifugal pump (401) are respectively fixedly connected to the first conveying pipe (402) and the second conveying pipe (403); the other end of the first conveying pipe (402) is fixedly connected to the bottom of the abrasive box (4); the second conveying pipe (403) is fixedly connected to the sandblasting cylinder (5) and communicates with the sandblasting chamber.

3. The integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe according to claim 2, characterized in that: The sandblasting assembly comprises a spray gun (503) and a discharge valve (504). The spray gun (503) is fixedly mounted on the left end of the sandblasting straight pipe (502), and evenly distributed discharge valves (504) are fixedly mounted on the outside of the spray gun (503). The discharge valves (504) only allow fluid to be sprayed out from the spray gun (503). The size of the spray gun (503) is smaller than that of the stainless steel welded pipe body (1).

4. The integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe according to claim 3, characterized in that: The descaling assembly comprises a support rod (505) and a descaling brush (506); the surface of the sandblasting straight tube (502) is fixedly connected with the support rods (505) distributed in a circular array, and the other end of the support rods (505) is fixedly connected with the descaling brush (506); the descaling brush (506) is located on the right side of the spray gun (503); and the stainless steel welded pipe body (1) is fixed on the left side of the spray gun (503).

5. The integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe according to claim 4, characterized in that: The welding pipe positioning assembly (202) comprises a support block (203), a pushing screw (204), a rotating wheel (205) and a clamping head (206); the right side of the first side frame (201) is fixedly installed with a support block (203) distributed in an upper and lower position, and the two support blocks (203) are both threadedly installed with pushing screws (204); the adjacent ends of the two pushing screws (204) are fixedly connected with a clamping head (206); a through hole is opened on the first side frame (201); the stainless steel welding pipe body (1) passes through the through hole and is located between the two clamping heads (206); the separated ends of the two pushing screws (204) are fixedly connected with a rotating wheel (205); the spray gun (503) is coaxially arranged with the stainless steel welding pipe body (1).

6. The integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe according to claim 5, characterized in that: The displacement assembly comprises a sliding opening (207), a moving platform (208), an X-axis screw rod (209), a guide rod (210) and a servo motor (211); a sliding opening (207) is provided on the left side of the top of the main machine (2), and a moving platform (208) is slidably installed in the sliding opening (207); an X-axis screw rod (209) is rotatably installed in the sliding opening (207), and the moving platform (208) is threadedly installed on the X-axis screw rod (209); a guide rod (210) is fixedly installed in the sliding opening (207), and the moving platform (208) is slidably sleeved on the guide rod (210); the first side frame (201) is fixedly installed on the top of the moving platform (208); the servo motor (211) is fixedly installed on the side of the main machine (2), and the output end of the servo motor (211) is fixedly connected to the X-axis screw rod (209).

7. The integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe according to claim 6, characterized in that: An electromagnet (507) is fixedly installed in the movable cavity, and the middle part of the electromagnet (507) is hollowed out, the sandblasting straight tube (502) passes through the electromagnet (507), and a magnetic block (508) is fixedly installed on the part of the sandblasting straight tube (502) located in the movable cavity, a buffer spring (509) is fixedly connected between the magnetic block (508) and the electromagnet (507), and the sandblasting straight tube (502) passes through the buffer spring (509).

8. The integrated device for sandblasting and descaling the inner wall of a stainless steel welded pipe according to claim 7, characterized in that: A switch seat (510) is fixedly installed on the left side of the top of the sandblasting long tube (5), and a push switch (511) is installed on the switch seat (510). The push switch (511) is electrically connected to the electromagnet (507), and the push switch (511) is facing the direction of the spray gun (503).

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