Dust collection device for nodular cast iron pipe fitting welding

Abstract

The invention discloses a dust collection device for nodular cast iron pipe fitting welding. The dust collection device comprises a movable base. Secondary electric sleeve telescopic equipment is fixedly arranged on the upper side of the movable base, the secondary electric sleeve telescopic equipment is vertically arranged, an upper supporting frame body is fixedly arranged at the top of the secondary electric sleeve telescopic equipment, and adjustable dust suction mechanisms and dust removal mechanisms are symmetrically arranged on the two sides of the upper supporting frame body; a water receiving basin body is placed on the movable base and located under the punched steel plate cylinder, and a dense and continuous water curtain environment is created by a water spraying curtain area jointly formed by the two opposite and close water spraying and smoke dust reducing plate bodies. And meanwhile, the water curtain sprayed by the auxiliary water spraying head in the punched steel plate cylinder further enhances the overall smoke dust reducing effect. The dual water curtain arrangement is matched with each other, so that gas containing dust and other substances can be subjected to multiple times of water curtain gifts when passing through.

Description

Technical Field

[0001] The invention relates to water-spraying curtain smoke and dust collecting equipment, in particular to a dust collecting device for welding ductile iron pipe fittings. Background Art

[0002] During the welding process of ductile iron pipe fittings, a large amount of smoke and harmful gases will be generated. Welding smoke contains various metal oxides, fluorides, silicates and other tiny particles. These smoke have a certain buoyancy and are easy to spread in the air, causing pollution to the entire workshop environment, and also seriously endangering the health of operators. Harmful gases such as carbon monoxide, carbon dioxide, ozone, and nitrogen oxides will also be generated during the welding process. These harmful gases are not only harmful to the human body, but also have adverse effects on the environment.

[0003] At present, a single dust reduction method is insufficient and it is difficult to effectively reduce the dust content in the gas containing dust and other substances. In order to solve this problem, a dust suction and dust reduction device for ductile iron pipe welding came into being. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide a dust suction device for welding ductile iron pipe fittings.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is a dust suction device for welding ductile iron pipe fittings: comprising a movable base;

[0006] A secondary electric sleeve telescopic device is fixedly provided on the upper side of the mobile base, the secondary electric sleeve telescopic device is vertically arranged, an upper support frame is fixedly provided on the top of the secondary electric sleeve telescopic device, and adjustable dust suction mechanisms and dust removal mechanisms are symmetrically provided on both sides of the upper support frame;

[0007] The dust removal mechanism comprises a dust outlet pipe body, the dust outlet pipe body is fixedly arranged on the rear side of the upper support frame, an exhaust fan is arranged on the top of the dust outlet pipe body, and the exhaust fan and the adjustable dust suction mechanism are connected through a ventilation pipe body;

[0008] The two sides of the dust outlet pipe body are symmetrically provided with water spraying and dust reduction mechanisms, and the number of the water spraying and dust reduction mechanisms is two and they are symmetrically arranged on the two sides of the dust outlet pipe body;

[0009] The water spraying and dust reduction mechanism comprises a side connecting plate, the side connecting plate is fixedly arranged on the side wing of the dust outlet pipe body, bearing seats are symmetrically arranged on both sides of the side connecting plate, and side wing rotating arms are rotatably arranged on the two bearing seats, the extension direction of the two side wing rotating arms is downward, and the ends of the two side wing rotating arms are fixedly provided with water spraying and dust reduction plates; a side auxiliary plate is fixedly arranged in the middle of the side connecting plate, and a side dust-proof electric telescopic rod is rotatably arranged at the end of the side auxiliary plate through a hinge seat, and the other end of the side dust-proof electric telescopic rod is rotatably matched with the upper part of the water spraying and dust reduction plate by means of a hinge seat;

[0010] The cross-section of the water spray and smoke dust reduction plate body is arc-shaped, and a core water spray pipe body is fixedly provided on the inner side of the water spray and smoke dust reduction plate body. The number of the core water spray pipe bodies is several and they are evenly arranged on the inner side of the water spray and smoke dust reduction plate body. A core water spray head is provided on the core water spray pipe body, and the core water spray head plays the role of spraying water.

[0011] As an improvement, a small water pump is fixedly provided on the upper side of the upper support frame, and the small water pump is connected to the core water spray pipe body through a water pipe;

[0012] The axis direction of the dust outlet pipe body is perpendicular to the movable base.

[0013] As an improvement, the secondary electric sleeve telescopic device is fixedly provided with a side connecting plate body, the end of the side connecting plate body is fixedly provided with a perforated steel plate cylinder, the upper part of the perforated steel plate cylinder is narrowed, an auxiliary annular water spray pipe body is fixedly provided on the inner side of the upper opening of the perforated steel plate cylinder, the auxiliary annular water spray pipe body is provided with an auxiliary water spray head, and the small water pump and the auxiliary annular water spray pipe body are connected by a water pipe;

[0014] The punched steel plate cylinder is located directly below the dust removal mechanism.

[0015] As an improvement, the adjustable dust suction mechanism includes an auxiliary connecting plate body, the auxiliary connecting plate body is fixedly arranged on the front side of the upper supporting frame body, the front side of the auxiliary connecting plate body is rotatably provided with a front dust suction plate body through a hinge seat, the front part of the front dust suction plate body is provided with dust suction holes, the number of the dust suction holes is several, and the dust suction holes are evenly arranged on the front dust suction plate body; the lower side of the auxiliary connecting plate body is rotatably provided with a front dust-proof electric telescopic rod through a hinge seat, and the other end of the front dust-proof electric telescopic rod is rotatably matched with the back of the front dust suction plate body by means of a hinge seat;

[0016] One end of the ventilation tube body is connected to the back of the front dust suction plate body, which facilitates the adjustment of the angle and achieves a better dust suction effect.

[0017] As an improvement, a water receiving basin is placed on the movable base, and the water receiving basin is located directly below the perforated steel plate cylinder, and the upper edge of the water receiving basin is close to the lower edge of the perforated steel plate cylinder.

[0018] As an improvement, the projection of the mobile base in the top view is rectangular, the four corners of the mobile base are provided with lockable walking wheels, the rear part of the mobile base is fixed with a push handle, and the push handle is fixed with a controller.

[0019] As an improvement, the controller is electrically connected to the battery, the controller is electrically connected to the secondary electric sleeve telescopic device, the controller is electrically connected to the front dustproof electric telescopic rod, and the controller is electrically connected to the side dustproof electric telescopic rod.

[0020] As an improvement, the mobile base is provided with a water tank and a battery, and the battery is a lithium battery.

[0021] The advantages of the present invention over the prior art are: the water curtain area formed by two opposite and close water spraying and dust reduction plates creates a dense and continuous water curtain environment. At the same time, the water curtain sprayed by the auxiliary water spray head in the perforated steel plate cylinder further enhances the overall dust reduction effect. The double water curtain settings cooperate with each other, so that the gas containing dust and other substances can experience multiple water curtain baptisms when passing through.

[0022] The gas containing dust and other substances will first encounter the first water curtain formed by two opposite water spraying dust reduction plates. Most of the dust will be quickly captured and settled, and the gas containing other substances will also be absorbed by the water curtain. When it passes through the water curtain sprayed by the auxiliary water spray head in the perforated steel plate cylinder, the remaining dust will be quickly captured and settled, and the gas containing other substances will continue to be absorbed by the water curtain.

[0023] This multiple dust reduction treatment method effectively makes up for the shortcomings of a single dust reduction method, greatly reducing the content of dust and other substances in the gas containing dust and other substances, thereby greatly improving the overall dust reduction effect and providing a strong guarantee for creating a clean and safe working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The three-dimensional structure diagram of a dust suction device for welding ductile iron pipe fittings of the present invention is shown in FIG. Figure 1 .

[0025] Figure 2 The three-dimensional structure diagram of a dust suction device for welding ductile iron pipe fittings of the present invention is shown in FIG. Figure 2 .

[0026] Figure 3The three-dimensional structure diagram of a dust suction device for welding ductile iron pipe fittings of the present invention is shown in FIG. Figure 3 .

[0027] Figure 4 The utility model is a rear structural schematic diagram of a dust suction device for welding ductile iron pipe fittings of the present invention.

[0028] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle.

[0029] Figure 6 yes Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0030] Figure 7 yes Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0031] Figure 8 yes Figure 5 Schematic diagram of the partial enlarged structure at point C in the middle. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of the embodiments of the present invention, "plurality" means at least 2.

[0036] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In conjunction with the accompanying drawings, a dust suction device for welding ductile iron pipe fittings includes a movable base 1;

[0038] A secondary electric sleeve telescopic device 2 is fixedly provided on the upper side of the mobile base 1. The secondary electric sleeve telescopic device 2 is vertically arranged. An upper supporting frame 3 is fixedly provided on the top of the secondary electric sleeve telescopic device 2. An adjustable dust suction mechanism 4 and a dust removal mechanism 5 are symmetrically provided on both sides of the upper supporting frame 3.

[0039] The dust removal mechanism 5 includes a dust outlet pipe body 6, which is fixedly arranged on the rear side of the upper support frame 3. An exhaust fan 7 is provided on the top of the dust outlet pipe body 6. The exhaust fan 7 and the adjustable dust suction mechanism 4 are connected through a ventilation pipe body 8. The axial direction of the dust outlet pipe body 6 is perpendicular to the movable base 1.

[0040] Water spraying and dust reduction mechanisms 9 are symmetrically arranged on both sides of the dust outlet pipe body 6 . The number of the water spraying and dust reduction mechanisms 9 is two and they are symmetrically arranged on both sides of the dust outlet pipe body 6 .

[0041] The water spray and dust reduction mechanism 9 includes a side connecting plate 10, which is fixedly arranged on the side wing of the dust outlet pipe body 6, and bearing seats 11 are symmetrically arranged on both sides of the side connecting plate 10. Side wing rotating arms 12 are rotatably arranged on the two bearing seats 11, and the two side wing rotating arms 12 extend downward, and the ends of the two side wing rotating arms 12 are fixedly provided with water spray and dust reduction plates 13; a side auxiliary plate 14 is fixedly arranged in the middle of the side connecting plate 10, and a side dust-proof electric telescopic rod 15 is rotatably arranged at the end of the side auxiliary plate 14 through a hinge seat, and the other end of the side dust-proof electric telescopic rod 15 is rotatably matched with the upper part of the water spray and dust reduction plate 13 by means of a hinge seat.

[0042] The cross-section of the water spray and smoke reduction plate body 13 is arc-shaped, and a core water spray pipe body 16 is fixedly provided on the inner side of the water spray and smoke reduction plate body 13. The number of the core water spray pipe bodies 16 is several and they are evenly arranged on the inner side of the water spray and smoke reduction plate body 13. A core water spray head 17 is provided on the core water spray pipe body 16, and the core water spray head 17 plays the role of spraying water; a small water pump 18 is fixedly provided on the upper side of the upper support frame 3, and the small water pump 18 and the core water spray pipe body 16 are connected by a water pipe.

[0043] The user uses the controller 19 to control the extension and retraction of the side dust-proof electric telescopic rod 15. When the side dust-proof electric telescopic rod 15 is extended, the extension direction of the two side wing rotating arms 12 is downward, the water spraying and dust reduction plate body 13 is vertically arranged, and the opening directions of the two water spraying and dust reduction plates 13 are opposite and close to each other, forming a water spraying curtain area, which is very effective in reducing dust. When the side dust-proof electric telescopic rod 15 is shortened, the water spraying and dust reduction plate body 13 is unfolded, which is convenient for cleaning the water spraying and dust reduction plate body 13.

[0044] The adjustable dust suction mechanism 4 includes an auxiliary connecting plate body 20, which is fixedly arranged on the front side of the upper supporting frame body 3. The front side of the auxiliary connecting plate body 20 is rotatably provided with a front dust suction plate body 21 through a hinge seat. The front part of the front dust suction plate body 21 is provided with dust suction holes 22. The number of the dust suction holes 22 is several, and the dust suction holes 22 are evenly arranged on the front dust suction plate body 21; the lower side of the auxiliary connecting plate body 20 is rotatably provided with a front dust-proof electric telescopic rod 23 through a hinge seat, and the other end of the front dust-proof electric telescopic rod 23 is rotatably matched with the back of the front dust suction plate body 21 by means of a hinge seat.

[0045] One end of the ventilation tube body 8 is connected to the back of the front dust suction plate body 21, so that the angle can be adjusted to achieve a better dust suction effect.

[0046] The secondary electric sleeve telescopic device 2 is fixed with a side connecting plate body 24, and a perforated steel plate cylinder 25 is fixed at the end of the side connecting plate body 24. The upper part of the perforated steel plate cylinder 25 is narrowed, and an auxiliary annular water spray pipe body 26 is fixed inside the upper opening of the perforated steel plate cylinder 25. The auxiliary annular water spray pipe body 26 is provided with an auxiliary water spray head 27, which plays the role of water spraying; the small water pump 18 and the auxiliary annular water spray pipe body 26 are connected by a water pipe. The water sprayed by the auxiliary water spray head 27 forms a water curtain. The perforated steel plate cylinder 25 is located directly below the dust removal mechanism 5.

[0047] The user uses the controller 19 to control the extension and retraction of the secondary electric sleeve telescopic device 2. When the side dust-proof electric telescopic rod 15 is extended, the opening directions of the two water-spraying smoke and dust reduction plates 13 are relative and close to each other, and the secondary electric sleeve telescopic device 2 is shortened, allowing the lower parts of the two water-spraying smoke and dust reduction plates 13 to extend into the perforated steel plate cylinder 25. The dust-containing gas is again sprayed by the auxiliary water spray head 27 to form a water curtain to reduce the smoke and dust.

[0048] When it is necessary to clean the water spray and smoke reduction plate 13, the user uses the controller 19 to control the extension of the secondary electric sleeve telescopic device 2, so that the lower parts of the two water spray and smoke reduction plates 13 are separated from the punching steel plate cylinder 25, and the dust-proof electric telescopic rod 15 is shortened, and the water spray and smoke reduction plate 13 is unfolded, which is convenient for cleaning the water spray and smoke reduction plate 13.

[0049] A water receiving basin 28 is placed on the mobile base 1 , and the water receiving basin 28 is located directly below the perforated steel plate cylinder 25 . The upper edge of the water receiving basin 28 is close to the lower edge of the perforated steel plate cylinder 25 , and serves to receive water.

[0050] The projection of the mobile base 1 in the top view is rectangular, and lockable running wheels 29 are provided at the four corners of the mobile base 1. A push handle 30 is fixedly provided at the rear of the mobile base 1, and a controller 19 is fixedly provided on the push handle 30.

[0051] The mobile base 1 is provided with a water tank 31 and a battery 32 , and the battery 32 is a lithium battery.

[0052] The controller 19 is electrically connected to the battery 32 , the controller 19 is electrically connected to the secondary electric sleeve telescopic device 2 , the controller 19 is electrically connected to the front dustproof electric telescopic rod 23 , and the controller 19 is electrically connected to the side dustproof electric telescopic rod 15 .

[0053] structure:

[0054] Mobile base 1: It is rectangular in top view, with lockable wheels 29 at the four corners to facilitate the movement and fixation of the device. A push handle 30 is provided at the rear for pushing the device. A water tank 31, a battery 32 and a water receiving basin 28 are also placed on the base. A controller 19 is fixed on the push handle 30 for controlling the operation of various components of the device.

[0055] The secondary electric sleeve telescopic device 2 is vertically fixed on the upper side of the mobile base 1, and an upper support frame 3 is provided on the top thereof. The telescopic device 2 can be controlled by a controller 19.

[0056] The upper support frame 3 has an adjustable dust suction mechanism 4 and a dust removal mechanism 5 symmetrically arranged on both sides.

[0057] The dust removal mechanism 5 comprises a dust outlet pipe body 6, and a fan 7 is arranged on the top. Water spraying and dust reduction mechanisms 9 are symmetrically arranged on both sides of the dust outlet pipe body 6.

[0058] The water spray dust reduction mechanism 9 is composed of a side connecting plate 10, a bearing seat 11, a side wing rotating arm 12, a water spray dust reduction plate body 13, a side auxiliary plate body 14 and a side dust-proof electric telescopic rod 15. The water spray dust reduction plate body 13 is provided with a core water spray pipe body 16 and a core water spray head 17 on the inner side, and water is supplied by a small water pump 18 on the upper support frame 3. The side dust-proof electric telescopic rod 15 is controlled to be extended and retracted by a controller 19, so that the water spray dust reduction plate body 13 can be vertically formed into a water spray curtain area for dust reduction, or unfolded for cleaning.

[0059] Adjustable dust suction mechanism 4: includes auxiliary connecting plate 20, front dust suction plate 21 and front dust-proof electric telescopic rod 23. A dust suction hole 22 is provided at the front of the front dust suction plate 21. The controller 19 controls the front dust-proof electric telescopic rod 23 to extend and retract, and the angle of the front dust suction plate 21 can be adjusted to improve the dust suction effect.

[0060] The components on the secondary electric sleeve telescopic device 2 are: a side connecting plate 24 is provided, a punched steel plate cylinder 25 is fixed at the end thereof, an auxiliary annular water spray pipe 26 and an auxiliary water spray head 27 are provided inside the upper opening, and water is supplied by a small water pump 18 to form a water curtain. The punched steel plate cylinder 25 is located directly below the dust removal mechanism 5. The controller 19 controls the expansion and contraction of the secondary electric sleeve telescopic device 2, so that the lower part of the water spray smoke and dust reduction plate 13 can be extended into or out of the punched steel plate cylinder 25.

[0061] During operation, the battery 32 supplies power to each component, the water in the water tank 31 is transported to each water spraying component through the small water pump 18, the gas containing dust and other substances is processed by dust suction and smoke reduction, and the waste water falls into the water receiving basin 28.

[0062] Directions:

[0063] First, the device is moved to a welding position by means of the push handle 30 and the lockable running wheels 29, and then the lockable running wheels 29 are locked to ensure the stability of the device.

[0064] The controller 19 is used to operate the secondary electric sleeve telescopic device 2, so that the water spray dust reduction plate 13 is vertical. When the side dust-proof electric telescopic rod 15 is extended, the two side wing rotating arms 12 face downward, and the openings of the two water spray dust reduction plates 13 are relatively close to form a water spray curtain area, so as to achieve efficient reduction of dust and other harmful substances. The secondary electric sleeve telescopic device 2 can also be controlled to shorten, so that the lower part of the water spray dust reduction plate 13 is extended into the perforated steel plate cylinder 25, so that the gas containing dust and other substances is further reduced by the water curtain sprayed by the auxiliary water spray head 27 to reduce dust and other harmful substances, thereby enhancing the effect.

[0065] The exhaust fan 7 is turned on by the controller 19, and the front dust-proof electric telescopic rod 23 and the side dust-proof electric telescopic rod 15 are controlled to extend, so that the front dust suction plate 21 can reach a suitable angle for suction of dust and gases containing other harmful substances. The gas containing dust and other substances enters the ventilation pipe body 8 and the dust outlet pipe body 6 through the dust suction hole 22, and the dust is captured when passing through the water curtain area, and then the gas containing dust and other substances is reduced to smoke and dust by the water curtain of the auxiliary water spray head 27.

[0066] When the water spray and dust reduction plate 13 needs to be cleaned, the controller 19 is used to extend the secondary electric sleeve telescopic device 2 so that the lower part of the water spray and dust reduction plate 13 leaves the punching steel plate cylinder 25, and then the side dust-proof electric telescopic rod 15 is controlled to shorten, and the water spray and dust reduction plate 13 is unfolded for cleaning, which also facilitates the cleaning of the punching steel plate cylinder 25.

[0067] The power for the device is provided by a battery 32. The water in the water tank 31 is transported to the core water spray pipe body 16 and the auxiliary annular water spray pipe body 26 through a small water pump 18, and is sprayed out by the core water spray head 17 and the auxiliary water spray head 27 to form a water curtain to reduce smoke and other harmful substances contained in the gas.

[0068] Waste water generated during the smoke and dust reduction process will fall into the water receiving basin 28 and be received by the water receiving basin 28 .

[0069] The water curtain area formed by two opposite and close water spraying and dust reduction plates creates a dense and continuous water curtain environment. At the same time, the water curtain sprayed by the auxiliary water spray head in the perforated steel plate cylinder further enhances the overall dust reduction effect. This double water curtain setting cooperates with each other, so that the gas containing dust and other substances can experience multiple water curtain baptisms when passing through.

[0070] The gas containing dust and other substances will first encounter the first water curtain formed by two opposite water spraying dust reduction plates. Most of the dust will be quickly captured and settled, and the gas containing other substances will also be absorbed by the water curtain. When it passes through the water curtain sprayed by the auxiliary water spray head in the perforated steel plate cylinder, the remaining dust will be quickly captured and settled, and the gas containing other substances will continue to be absorbed by the water curtain.

[0071] This multiple dust reduction treatment method effectively makes up for the shortcomings of a single dust reduction method, greatly reducing the content of dust and other substances in the gas containing dust and other substances, thereby greatly improving the overall dust reduction effect and providing a strong guarantee for creating a clean and safe working environment.

[0072] With the help of the joint operation of the adjustable dust suction mechanism, dust removal mechanism and multi-stage water spray smoke reduction mechanism, the smoke generated during the welding process and the harmful elements in the air can be efficiently captured and settled, effectively ensuring the health and safety of the workers.

[0073] The angle of the water spray dust reduction plate can be adjusted and can be unfolded by the controller to facilitate the cleaning work, which ensures that the device can operate effectively for a long time. Such a design greatly reduces the difficulty and time required for cleaning and enhances the maintenance efficiency of the device. At the same time, it is also convenient to clean the punching steel plate cylinder 25.

[0074] The unique design of the adjustable dust suction mechanism 4 enables the user to adjust the angle and range of dust suction according to actual needs, which significantly improves the flexibility and adaptability of the device.

[0075] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A dust suction device for welding ductile iron pipe fittings, characterized in that: It comprises a mobile base (1); A secondary electric sleeve telescopic device (2) is fixedly provided on the upper side of the mobile base (1); the secondary electric sleeve telescopic device (2) is arranged vertically; an upper support frame (3) is fixedly provided on the top of the secondary electric sleeve telescopic device (2); and adjustable dust suction mechanisms (4) and dust removal mechanisms (5) are symmetrically provided on both sides of the upper support frame (3); The dust removal mechanism (5) comprises a dust outlet pipe body (6), the dust outlet pipe body (6) is fixedly arranged on the rear side of the upper support frame (3), an exhaust fan (7) is arranged on the top of the dust outlet pipe body (6), and the exhaust fan (7) and the adjustable dust suction mechanism (4) are connected via a ventilation pipe body (8); Water spraying and dust reduction mechanisms (9) are symmetrically arranged on both sides of the dust outlet pipe body (6); the number of the water spraying and dust reduction mechanisms (9) is two and they are symmetrically arranged on both sides of the dust outlet pipe body (6); The water spraying and dust reduction mechanism (9) comprises a side connecting plate (10), the side connecting plate (10) is fixedly arranged on the side wing of the dust outlet pipe body (6), bearing seats (11) are symmetrically arranged on both sides of the side connecting plate (10), and side wing rotating arms (12) are rotatably arranged on the two bearing seats (11), the two side wing rotating arms (12) extend downward, and the ends of the two side wing rotating arms (12) are fixedly provided with a water spraying and dust reduction plate body (13); a side auxiliary plate body (14) is fixedly arranged in the middle of the side connecting plate (10), and a side dust-proof electric telescopic rod (15) is rotatably arranged at the end of the side auxiliary plate body (14) through a hinge seat, and the other end of the side dust-proof electric telescopic rod (15) is rotatably matched with the upper part of the water spraying and dust reduction plate body (13) by means of a hinge seat; The cross section of the water spraying and smoke reducing plate body (13) is arc-shaped. A core water spraying pipe body (16) is fixedly provided on the inner side of the water spraying and smoke reducing plate body (13). The number of the core water spraying pipe bodies (16) is several and they are evenly arranged on the inner side of the water spraying and smoke reducing plate body (13). A core water spraying head (17) is provided on the core water spraying pipe body (16). The core water spraying head (17) plays a role of spraying water.

2. A dust suction device for welding ductile iron pipe fittings according to claim 1, characterized in that: A small water pump (18) is fixedly provided on the upper side of the upper support frame (3), and the small water pump (18) and the core water spray pipe body (16) are connected via a water pipe; The axial direction of the dust outlet pipe body (6) is perpendicular to the movable base (1).

3. A dust suction device for welding ductile iron pipe fittings according to claim 2, characterized in that: The secondary electric sleeve telescopic device (2) is fixedly provided with a side connecting plate (24), the end of the side connecting plate (24) is fixedly provided with a perforated steel plate cylinder (25), the upper part of the perforated steel plate cylinder (25) is narrowed, an auxiliary annular water spray pipe (26) is fixedly provided on the inner side of the upper opening of the perforated steel plate cylinder (25), the auxiliary annular water spray pipe (26) is provided with an auxiliary water spray head (27), and the small water pump (18) and the auxiliary annular water spray pipe (26) are connected by a water pipe; The perforated steel plate cylinder (25) is located directly below the dust removal mechanism (5).

4. A dust suction device for welding ductile iron pipe fittings according to claim 3, characterized in that: The adjustable dust suction mechanism (4) comprises an auxiliary connecting plate body (20), the auxiliary connecting plate body (20) is fixedly arranged on the front side of the upper supporting frame body (3), the front side of the auxiliary connecting plate body (20) is rotatably provided with a front dust suction plate body (21) through a hinge seat, the front part of the front dust suction plate body (21) is provided with dust suction holes (22), the number of the dust suction holes (22) is a plurality, and the dust suction holes (22) are evenly arranged on the front dust suction plate body (21); the lower side of the auxiliary connecting plate body (20) is rotatably provided with a front dustproof electric telescopic rod (23) through a hinge seat, and the other end of the front dustproof electric telescopic rod (23) is rotatably matched with the back of the front dust suction plate body (21) by means of a hinge seat; One end of the ventilation tube body (8) is connected to the back of the front dust suction plate body (21), which facilitates the adjustment of the angle and achieves a better dust suction effect.

5. A dust suction device for welding ductile iron pipe fittings according to claim 4, characterized in that: A water receiving basin (28) is placed on the movable base (1), and the water receiving basin (28) is located directly below the perforated steel plate cylinder (25), and the upper edge of the water receiving basin (28) is close to the lower edge of the perforated steel plate cylinder (25).

6. A dust suction device for welding ductile iron pipe fittings according to claim 5, characterized in that: The projection of the mobile base (1) in a top view is rectangular, the four corners of the mobile base (1) are provided with lockable running wheels (29), the rear of the mobile base (1) is fixedly provided with a push handle (30), and the push handle (30) is fixedly provided with a controller (19).

7. A dust suction device for welding ductile iron pipe fittings according to claim 6, characterized in that: The controller (19) is electrically connected to the battery (32), the controller (19) is electrically connected to the secondary electric sleeve telescopic device (2), the controller (19) is electrically connected to the front dustproof electric telescopic rod (23), and the controller (19) is electrically connected to the side dustproof electric telescopic rod (15).

8. A dust suction device for welding ductile iron pipe fittings according to claim 6, characterized in that: The mobile base (1) is provided with a water tank (31) and a storage battery (32), and the storage battery (32) is a lithium battery.

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