A device for repairing surface defects of cast iron pipes

Abstract

This utility model belongs to the field of cast iron repair technology, specifically a device for repairing surface defects in cast iron pipes, including an arc spray cold welding machine body; a collection box is fixedly connected to the side wall of the arc spray cold welding machine body; an air pump is fixedly connected to the side wall of the collection box; a dust suction pipe is fixedly connected to one end of the air pump; metal dust generated during the repair process is sucked in through the dust suction pipe and sent into the collection box through the conveying pipe. The dust is intercepted and filtered by the filter screen in the collection box, and the purified air is discharged from the opening. The support rod and the base cooperate to form a stable support for the dust suction pipe, ensuring that the dust suction port is accurately aligned with the defect repair area. Through the cooperation of the air pump and the collection box, the dust is collected in real time during the repair process, avoiding the operator from inhaling harmful dust. The filter screen can effectively filter dust and prevent secondary pollution. The support structure of the base and the support rod improves the stability of the dust suction pipe and ensures the dust suction effect.

Description

Technical Field

[0001] This utility model belongs to the field of cast iron repair technology, specifically a device for repairing surface defects of cast iron pipes. Background Technology

[0002] In the fields of municipal water supply, drainage, gas transmission, and industrial fluid transportation, cast iron pipes have long occupied an important position due to their high strength, high corrosion resistance, and good sealing performance.

[0003] In the existing technology, the surface repair of cast iron pipes mainly utilizes an electric arc spray cold welding machine. Ordinary cast iron welding rods can be used directly to repair defects on the machined surface of cast iron pipes. Under the premise of no preheating before welding and no heat treatment after welding, cutting can be performed directly after welding, and the machining accuracy can be ensured. It is suitable for the defect repair of various types of cast iron pipes.

[0004] However, in the existing technology, when using an electric arc spray cold welding machine to repair cast iron pipes, some metal dust is generated, which is not easy to handle and causes it to float in the surrounding air, thus having a certain impact on health. Therefore, in order to address the above problems, a device for repairing surface defects of cast iron pipes is proposed. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a device for repairing surface defects of cast iron pipes.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The equipment for repairing surface defects of cast iron pipes according to this utility model includes an arc spray cold welding machine body; a collection box is fixedly connected to the side wall of the arc spray cold welding machine body; an air pump is fixedly connected to the side wall of the collection box; a dust suction pipe is fixedly connected to one end of the air pump; a conveying pipe is fixedly connected to the other end of the air pump; the conveying pipe passes through the wall of the collection box and is fixedly connected to it; an opening is provided in the side wall of the collection box; a filter screen is fixedly connected to the side wall of the opening; a support rod is fixedly connected to the side wall of the dust suction pipe; and a base is provided at the end of the support rod.

[0007] Preferably, a fixing frame is fixedly connected to the inner side wall of the collection box; a rotating rod is rotatably connected to the side wall of the fixing frame; a fan blade is fixedly connected to the side wall of the rotating rod; a pair of cleaning brush plates are fixedly connected to the side wall of the rotating rod; the cleaning brush plates are symmetrically arranged on both sides of the rotating rod and have the same structure; the fan blades are positioned corresponding to the delivery pipe.

[0008] Preferably, the bottom of the base has a pair of grooves; the grooves are symmetrically arranged on both sides of the base and have the same structure; the sidewalls of the grooves are threaded with screws; the screws penetrate the base wall and are threaded to it; a fixing cone is fixed to the end of the screw.

[0009] Preferably, a sliding cylinder is fixedly connected to the top of the base; the sliding cylinder and the support rod are in sliding fit; a locking block is hinged to the side wall of the sliding cylinder; and multiple locking slots are evenly provided on the side wall of the support rod.

[0010] Preferably, a pull plate is fixed to the side wall of the card block; the pull plate is arc-shaped.

[0011] Preferably, a connecting rod is fixedly connected to the side wall of the cleaning brush.

[0012] The beneficial effects of this utility model are: 1. This utility model provides a device for repairing surface defects of cast iron pipes. Through the setting of a dust suction pipe and a filter screen, and the cooperation of an air pump and a collection box, the dust is collected in real time during the repair process, which avoids the operator from inhaling harmful dust. The filter screen can effectively filter dust and prevent secondary pollution. The support structure of the base and support rod improves the stability of the dust suction pipe and ensures the dust suction effect. 2. This utility model provides a device for repairing surface defects of cast iron pipes. Through the setting of a cleaning brush plate, the cleaning brush plate is driven by air kinetic energy to automatically clean the filter screen plate without the need for an additional power source. This avoids the decrease in ventilation efficiency caused by dust clogging of the filter screen plate and ensures the long-term stable operation of the collection box. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the filter screen plate in this utility model; Figure 3 This is a perspective view of the fan blade in this utility model; Figure 4 This is a perspective view of the slide tube in this utility model.

[0014] Legend: 1. Arc spray cold welding machine body; 11. Collection box; 12. Air pump; 13. Dust suction pipe; 14. Conveying pipe; 15. Opening; 16. Filter screen; 17. Support rod; 18. Base; 2. Fixing frame; 21. Rotating rod; 22. Fan blade; 23. Cleaning brush plate; 3. Groove; 31. Screw; 32. Fixing cone; 4. Slide cylinder; 41. Locking block; 42. Locking slot; 5. Pull plate; 6. Connecting rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Specific implementation examples are given below.

[0017] Please see Figures 1-4 This utility model provides a device for repairing surface defects of cast iron pipes, including an arc spray cold welding machine body 1; a collection box 11 is fixedly connected to the side wall of the arc spray cold welding machine body 1; an air pump 12 is fixedly connected to the side wall of the collection box 11; a dust suction pipe 13 is fixedly connected to one end of the air pump 12; a conveying pipe 14 is fixedly connected to the other end of the air pump 12; the conveying pipe 14 penetrates the wall of the collection box 11 and is fixedly connected to it; an opening 15 is provided on the side wall of the collection box 11; a filter screen 16 is fixedly connected to the side wall of the opening 15; a support rod 17 is fixedly connected to the side wall of the dust suction pipe 13; a base 18 is provided at the end of the support rod 17; in use, when the arc spray cold welding machine body 1 is working, the air pump 12 is activated. Pump 12 draws in metal dust generated during the repair process through suction pipe 13 and sends it into collection box 11 through delivery pipe 14. The dust is intercepted and filtered by filter screen 16 in collection box 11, and the purified air is discharged from opening 15. Support rod 17 and base 18 cooperate to form a stable support for suction pipe 13, ensuring that the suction port is accurately aligned with the defect repair area. In this process, the cooperation between air pump 12 and collection box 11 realizes real-time collection of dust during the repair process, avoiding the operator from inhaling harmful dust. Filter screen 16 can effectively filter dust and prevent secondary pollution. The support structure of base 18 and support rod 17 improves the stability of suction pipe 13 and ensures dust collection effect.

[0018] Furthermore, such as Figures 1-4As shown, a fixed frame 2 is fixedly connected to the inner wall of the collection box 11; a rotating rod 21 is rotatably connected to the side wall of the fixed frame 2; a fan blade 22 is fixedly connected to the side wall of the rotating rod 21; a pair of cleaning brush plates 23 are fixedly connected to the side wall of the rotating rod 21; the cleaning brush plates 23 are symmetrically arranged on both sides of the rotating rod 21 and have the same structure; the fan blade 22 corresponds to the position of the conveying pipe 14; in use, the dust-laden airflow discharged from the conveying pipe 14 impacts the fan blade 22, causing the rotating rod 21 to rotate on the fixed frame 2, and the rotating rod 21 synchronously drives the cleaning brush plates 23 on both sides to rotate. The cleaning brush plates 23 contact the surface of the filter screen 16, and continuously clean the filter screen 16 during the rotation process to remove the attached dust. In this process, the air kinetic energy is used to drive the cleaning brush plates 23 to automatically clean the filter screen 16 without the need for an additional power source, avoiding the decrease in ventilation efficiency of the filter screen 16 due to dust blockage, and ensuring the long-term stable operation of the collection box 11.

[0019] Furthermore, such as Figures 1-4 As shown, the base 18 has a pair of grooves 3 at its bottom; the grooves 3 are symmetrically arranged on both sides of the base 18 and have the same structure; the sidewall of the groove 3 is threaded with a screw 31; the screw 31 passes through the wall of the base 18 and is threaded to it; a fixing cone 32 is fixedly connected to the end of the screw 31; in use, when working on uneven ground or outdoors, the screw 31 is rotated to move it downward along the inner wall of the groove 3, driving the fixing cone 32 to insert into the ground. The fixing cone 32 engages with the ground to achieve a stable fixation of the base 18. After the operation is completed, the screw 31 is rotated in the opposite direction to retract the fixing cone 32. During this process, the fixing cone 32 can adapt to various ground environments, enhance the anti-tipping ability of the base 18, and prevent the equipment from shifting due to vibration during operation. The threaded connection structure of the screw 31 facilitates quick adjustment of the extension length of the fixing cone 32, making the operation flexible.

[0020] Furthermore, such as Figures 1-4 As shown, a sliding cylinder 4 is fixedly connected to the top of the base 18; the sliding cylinder 4 and the support rod 17 are in sliding engagement; a locking block 41 is hinged to the side wall of the sliding cylinder 4; multiple slots 42 are evenly provided on the side wall of the support rod 17; in use, first hold and pull the locking block 41 to open it, then slide the support rod 17 up and down along the sliding cylinder 4 to adjust the height of the suction pipe 13 to fit cast iron pipes of different diameters or installation heights. After adjusting to the appropriate height, the locking block 41 is released directly. Under the action of the internal torsion spring at the hinge of the locking block 41, the locking block 41 can automatically lock into the corresponding slot 42, realizing the relative fixation of the support rod 17 and the sliding cylinder 4. During this process, the height of the suction pipe 13 can be flexibly adjusted through the sliding engagement of the sliding cylinder 4 and the support rod 17 to adapt to the repair needs of cast iron pipes of different specifications. The locking structure of the locking block 41 and the slot 42 ensures stability and reliability after height adjustment and is convenient to operate.

[0021] Furthermore, such as Figures 1-4 As shown, a pull plate 5 is fixed to the side wall of the locking block 41; the pull plate 5 is arc-shaped; when it is necessary to adjust the height of the vacuum tube 13 during use, the locking block 41 is rotated around the hinge point by pulling the arc-shaped pull plate 5, so that the locking block 41 is disengaged from the slot 42, thereby releasing the fixation of the support rod 17. After the adjustment is completed, the pull plate 5 is released, the locking block 41 is reset and re-engaged into the slot 42. During this process, the arc-shaped pull plate 5 increases the force application area of ​​the hand, making the opening and closing operation of the locking block 41 easier. The arc-shaped design of the pull plate 5 fits the contour of the hand, improving the comfort of operation and facilitating the quick completion of height adjustment.

[0022] Furthermore, such as Figures 1-4 As shown, a connecting rod 6 is fixed to the side wall of the cleaning brush plate 23. In use, the connecting rod 6 is fixed to the bristles on the side wall of the cleaning brush plate 23 to enhance the connection strength of the bristles and make them gather together during the cleaning process. In this process, the connecting rod 6 improves the structural stability of the bristles on the side wall of the cleaning brush plate 23, reduces the loosening or deformation after long-term rotation, further improves the cleaning effect of the filter screen plate 16, and extends the service life of the bristles.

[0023] Working Principle: During operation, when the arc spray cold welding machine body 1 is working, the air pump 12 is started, and the metal dust generated during the repair process is sucked in through the dust suction pipe 13 and sent into the collection box 11 through the conveying pipe 14. The dust is intercepted and filtered by the filter screen plate 16 in the collection box 11, and the purified air is discharged from the opening 15. The support rod 17 cooperates with the base 18 to form a stable support for the dust suction pipe 13, ensuring that the dust suction port is accurately aligned with the defect repair area. During operation, the dust-laden airflow discharged from the conveying pipe 14 impacts the fan blade 22, driving the rotating rod 21 to rotate on the fixed frame 2. The rotating rod 21 synchronously drives the cleaning brush plates 23 on both sides to rotate. The cleaning brush plates 23 contact the surface of the filter screen plate 16, continuously cleaning the filter screen plate 16 during rotation to remove the attached dust. During operation, when working on uneven ground or outdoors, the screw 31 is rotated to move downward along the inner wall of the groove 3, driving the fixed cone 32 to insert into the ground. The engagement of the fixed cone 32 with the ground secures the base 1. The screw 31 is rotated in the reverse direction after the operation is completed to retract the fixing cone 32. When in use, first hold and pull the locking block 41 to open it. Then slide the support rod 17 up and down along the slide cylinder 4 to adjust the height of the vacuum tube 13 to adapt to cast iron tubes of different diameters or installation heights. After adjusting to the appropriate height, release the locking block 41 directly. Under the action of the internal torsion spring at the hinge of the locking block 41, the locking block 41 can automatically lock into the corresponding slot 42, realizing the relative fixation of the support rod 17 and the slide cylinder 4. When it is necessary to adjust the height of the vacuum tube 13 during use, pull the arc-shaped pull plate 5 to drive the locking block 41 to rotate around the hinge point, so that the locking block 41 disengages from the slot 42, thereby releasing the fixation of the support rod 17. After the adjustment is completed, release the pull plate 5, and the locking block 41 resets and re-locks into the slot 42. During use, the connecting rod 6 is fixed in the bristles on the side wall of the cleaning brush plate 23 to enhance the connection strength of the bristles and make them concentrated together during the cleaning process.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An apparatus for repairing surface defects of cast iron pipes, comprising an electric arc projection cold welding machine body (1); characterized in that: The arc spray cold welding machine body (1) has a collection box (11) fixedly connected to its side wall; an air pump (12) is fixedly connected to the side wall of the collection box (11); a dust suction pipe (13) is fixedly connected to one end of the air pump (12); a delivery pipe (14) is fixedly connected to the other end of the air pump (12); the delivery pipe (14) passes through the wall of the collection box (11) and is fixedly connected to it; an opening (15) is provided on the side wall of the collection box (11); a filter screen plate (16) is fixedly connected to the side wall of the opening (15); a support rod (17) is fixedly connected to the side wall of the dust suction pipe (13); and a base (18) is provided at the end of the support rod (17).

2. The equipment for repairing surface defects of cast iron pipes as described in claim 1, characterized in that: The inner wall of the collection box (11) is fixedly connected to a fixing frame (2); the side wall of the fixing frame (2) is rotatably connected to a rotating rod (21); the side wall of the rotating rod (21) is fixedly connected to a fan blade (22); the side wall of the rotating rod (21) is fixedly connected to a pair of cleaning brush plates (23); the cleaning brush plates (23) are symmetrically arranged on both sides of the rotating rod (21) and have the same structure; the fan blade (22) is positioned opposite to the conveying pipe (14).

3. An apparatus for repairing surface defects of cast iron pipe as defined in claim 1, wherein: The base (18) has a pair of grooves (3) at its bottom; the grooves (3) are symmetrically arranged on both sides of the base (18) and have the same structure; the side wall of the groove (3) is threaded with a screw (31); the screw (31) passes through the wall of the base (18) and is threaded to it; the end of the screw (31) is fixed with a fixing cone (32).

4. An apparatus for repairing surface defects of cast iron pipe as defined in claim 1, wherein: The base (18) is fixedly connected to the top of the slide cylinder (4); the slide cylinder (4) and the support rod (17) are in sliding fit; the slide cylinder (4) is hinged to the side wall with a locking block (41); the support rod (17) has multiple slots (42) evenly opened on the side wall.

5. An apparatus for repairing surface defects of cast iron pipe as defined in claim 4, wherein: The side wall of the card block (41) is fixed with a pull plate (5); the pull plate (5) is arranged in an arc shape.

6. An apparatus for repairing surface defects of cast iron pipe as defined in claim 2, wherein: A connecting rod (6) is fixed to the side wall of the cleaning brush plate (23).

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