A powder feeding device for an anti-corrosion production line of a processing pipeline

Abstract

The present invention relates to the technical field of pipeline production, and particularly relates to a powder feeding device for a pipeline anti-corrosion production line for processing pipelines, including: a mounting frame, a powder feeding belt fixed inside the mounting frame, and two limiting plates symmetrically fixed on both sides of the mounting frame. A plurality of partition plates are equidistantly and fixedly connected to the powder feeding belt, and two mounting grooves are symmetrically formed on both sides of the partition plates; a placement box assembly is arranged between two adjacent partition plates; two telescopic assemblies are symmetrically arranged inside the mounting grooves. The telescopic assemblies include two connecting plates, two energized solenoids, and air bags. The two energized solenoids are symmetrically fixedly connected between the two connecting plates. One side of the connecting plate is fixedly connected to the placement box assembly, and the air bag is arranged on one side of the mounting groove close to the side wall. The present invention can vibrate the powder during the powder transmission process, so that the powder is evenly dispersed, and the accuracy of thickness adjustment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline production, and particularly relates to a powder feeding device for a pipeline anti-corrosion production line for processing pipelines. Background Art

[0002] During the use of pipelines, whether buried underground or exposed to the air, they will be eroded by various corrosion factors. Therefore, pipelines need to be anti-corrosion treated during the processing process. During the anti-corrosion process, powder feeding is required, and the powder feeding device is used to evenly and continuously transport anti-corrosion materials such as epoxy resin powder into the spraying equipment.

[0003] A Chinese patent with the publication number CN210594336U discloses a powder feeding device for a pipeline anti-corrosion production line for processing pipelines, which includes a horizontal conveying channel. At the top of one end of the conveying channel, a connecting cylinder communicating with the conveying channel is vertically installed. At the top end of the connecting cylinder, a storage bin communicating with the connecting cylinder is coaxially fixed. At the bottom of the other end of the conveying channel, a discharge pipe communicating with the conveying channel is vertically installed. Along the conveying direction of the powder feeding belt, a thickness adjusting mechanism is arranged in the upper part of the conveying channel. The above application enables the powder to be smoothly discharged evenly and continuously, which is beneficial to normal spraying processing and can thus ensure normal production.

[0004] However, during the process of powder feeding and discharging, transferring the powder material from the storage bin to the powder feeding belt will cause a large amount of the powder material to accumulate at the discharging position, forming a powder pile, which affects the thickness adjustment of the powder material, resulting in inaccurate discharging amount of the powder material and affecting the spraying effect. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages that in the prior art, a large amount of powder material will accumulate at the discharging position, forming a powder pile, which affects the thickness adjustment of the powder material, resulting in inaccurate discharging amount of the powder material and affecting the spraying effect, and to propose a powder feeding device for a pipeline anti-corrosion production line for processing pipelines.

[0006] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0007] A powder feeding device for a pipeline anti-corrosion production line for processing pipelines includes: a mounting frame, a powder feeding belt fixed inside the mounting frame, and two limiting plates symmetrically fixed on both sides of the mounting frame. A plurality of partition plates are equidistantly and fixedly connected to the powder feeding belt, and two mounting grooves are symmetrically opened on both sides of the partition plates;

[0008] A placing box assembly is arranged between two adjacent partition plates, and the placing box assembly is used for placing powder material;

[0009] Two telescopic components are symmetrically arranged inside the installation groove. The telescopic component includes two connecting plates, two energized solenoids and an airbag. The two energized solenoids are symmetrically and fixedly connected between the two connecting plates. One side of the connecting plate is fixedly connected to the placing box assembly. The airbag is arranged on one side of the installation groove close to the side wall;

[0010] A pushing component is arranged between the airbag and the limiting plate. The pushing component is used to drive the placing box assembly to vibrate, so as to evenly lay the powder inside the placing box assembly.

[0011] Preferably, the placing box assembly does not contact the powder feeding belt. The placing box assembly further includes two side plates, two fixing plates, two elastic plates and a bottom plate. The two sides of the fixing plate are respectively fixedly connected to the two connecting plates. The two fixing plates are respectively fixedly connected to the middle parts of the two sides of the two side plates away from each other. The two elastic plates are fixedly connected between the ends of the two side plates. The bottom plate is fixedly connected to the two sides of the side plates and the elastic plates. The two side plates, the two fixing plates and the bottom plate form a placing box for placing powder.

[0012] Preferably, the cross section of the elastic plate is L-shaped, and the whole is arranged in a wave shape for deformation. The elastic plate and the bottom plate are both made of elastic materials and bend along with the powder feeding belt.

[0013] Preferably, the telescopic component further includes a control module and two connecting wires. The control module is fixedly connected to the side wall of the installation groove and is fixedly connected to the airbag. Two installation openings are formed in the middle of the airbag. The two connecting wires respectively pass through the two installation openings. One end of the connecting wire is fixedly connected to the control module, and the other end is fixedly connected to the connecting plate. The connecting wire is used to energize the energized solenoid.

[0014] Preferably, the airbag is made of elastic material, and a plurality of folding grooves are arranged on the surface. An air jet component is arranged on the airbag. The air jet component is used to spray the gas inside the airbag to the side of the placing box.

[0015] Preferably, the air jet component includes an air pipe and an air outlet strip. The air pipe is L-shaped. One end of the air pipe is fixedly communicated with the airbag, passes through the side plate, and the other horizontal end is arranged parallel to the side plate. The air outlet strip is fixedly connected to the bottom of the air pipe. A sealing piece is arranged inside the air outlet strip.

[0016] Preferably, an air inlet component is arranged between the airbag and the connecting plate. The air inlet component is used to inflate the airbag.

[0017] Preferably, the air inlet component includes a sealing strip and an air inlet. The air inlet is opened on one side of the airbag close to the connecting plate. The sealing strip is fixedly connected to the connecting plate and is used to squeeze and seal the air inlet.

[0018] Preferably, the pushing assembly includes a plurality of ejector rods and a plurality of pushing rods. The ejector rods are vertically and fixedly connected to the bent portion of the air jet assembly. The plurality of pushing rods are fixedly connected to the two side limiting plates, and the pushing rods are arranged at the feeding end of the powder feeding belt.

[0019] Preferably, the ejector rods are cylindrical, the ends of the plurality of pushing rods are circular, and are used to push the ejector rods. The plurality of pushing rods on both sides are arranged staggeredly for staggeredly pushing the ejector rods.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. When the placement box assembly moves along with the transmission belt, the pushing assembly between the airbag and the limiting plate pushes the placement box assembly alternately left and right on both sides, so as to vibrate the powder inside the placement box assembly. The present invention can vibrate the powder during the powder transmission process, make the powder evenly dispersed, and improve the accuracy of thickness adjustment;

[0022] 2. By setting the placement box, it is to reduce the powder stuck between the powder feeding belt and the limiting plate. The placement box can reduce the loss of powder during the transfer process. The placement box has a certain depth. During the swinging process of the placement box, the amount of powder flying out is reduced, avoiding the waste of powder;

[0023] 3. The first half of the powder feeding belt is the vibration section. When the powder passes through the vibration section, the control module is not powered on for control. The plurality of energized solenoids and the plurality of connecting wires are used to elastically support and fix the position of the placement box, and at the same time, during the entire vibration process, they can play a role of deformation and reset;

[0024] 4. The second half of the powder feeding belt is used for thickness adjustment of the powder. It is controlled by the control module to be powered on. The current is introduced into the energized solenoid through the connecting wire, so that the energized solenoid is energized and contracted. The contracted energized solenoid can fix the position of the placement box, thus avoiding the shaking of the placement box during the thickness adjustment process and ensuring the precise control of the powder thickness;

[0025] 5. During the reset process of the energized solenoid, the airbag is squeezed through the connecting plate, so that the gas inside the airbag is squeezed into the trachea, and the excess gas is ejected from the air outlet strip. The ejected gas impacts the bottom edge of the placement box, so as to disperse the powder accumulated inside the bottom edge, ensuring the complete export of the powder during the export process and reducing the waste of powder;

[0026] 6. The multiple ejector rods inside the placement box will alternately contact the pushing rods on both sides, so as to drive the placement box to vibrate evenly, so as to shake the powder inside the placement box evenly, avoiding affecting the subsequent thickness adjustment. Brief Description of the Drawings

[0027] Figure 1 Figure 1 is a front structural schematic diagram of a powder feeding device for an anti-corrosion production line of processed pipelines proposed by the present invention;

[0028] Figure 2 Figure 2 is a structural schematic diagram of a powder feeding belt of a powder feeding device for an anti-corrosion production line of processed pipelines proposed by the present invention;

[0029] Figure 3 Figure 3 is a structural schematic diagram of a partition of a powder feeding device for an anti-corrosion production line of processed pipelines proposed by the present invention;

[0030] Figure 4 Figure 4 is a rear structural schematic diagram of a telescopic assembly of a powder feeding device for an anti-corrosion production line of processed pipelines proposed by the present invention;

[0031] Figure 5 Figure 5 is a structural schematic diagram of a placement box assembly of a powder feeding device for an anti-corrosion production line of processed pipelines proposed by the present invention;

[0032] Figure 6 Figure 6 is a structural schematic diagram of a telescopic assembly of a powder feeding device for an anti-corrosion production line of processed pipelines proposed by the present invention;

[0033] Figure 7 Figure 7 is a structural schematic diagram of a jet assembly of a powder feeding device for an anti-corrosion production line of processed pipelines proposed by the present invention;

[0034] Figure 8 Figure 8 is a structural schematic diagram of an air intake assembly of a powder feeding device for an anti-corrosion production line of processed pipelines proposed by the present invention;

[0035] Figure 9 Figure 9 is a structural schematic diagram of a pushing assembly of a powder feeding device for an anti-corrosion production line of processed pipelines proposed by the present invention.

[0036] In the figures: 1, mounting frame; 2, powder feeding belt; 3, limiting plate; 4, partition; 5, placement box assembly; 51, side plate; 52, fixing plate; 53, elastic plate; 54, bottom plate; 6, telescopic assembly; 61, connecting plate; 62, energized solenoid; 63, airbag; 64, control module; 65, connecting wire; 7, pushing assembly; 71, ejector rod; 72, push rod; 8, jet assembly; 81, air pipe; 82, air outlet strip; 9, air intake assembly; 91, sealing strip; 92, air intake port. Detailed Description of the Invention

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0038] Terms such as "upper", "lower", "left", "right", "middle", and "one" cited in the present invention are only for the sake of clarity in description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships, without substantial changes in the technical content, should also be regarded as the scope of implementation of the present invention.

[0039] Referring to Figures 1-9 , a powder feeding device for a pipeline anti-corrosion production line, comprising: a mounting frame 1, a powder feeding belt 2 fixed inside the mounting frame 1, and two limiting plates 3 symmetrically fixed on both sides of the mounting frame 1. A plurality of partition plates 4 are fixedly connected at equal intervals on the powder feeding belt 2, and two mounting grooves are symmetrically formed on both sides of the partition plate 4;

[0040] A placing box assembly 5 is arranged between two adjacent partition plates 4, and the placing box assembly 5 is used for placing powder materials;

[0041] Two telescopic assemblies 6 are symmetrically arranged inside the mounting grooves. The telescopic assembly 6 includes two connecting plates 61, two energized solenoids 62, and an airbag 63. The two energized solenoids 62 are symmetrically fixedly connected between the two connecting plates 61. One side of the connecting plate 61 is fixedly connected to the placing box assembly 5, and the airbag 63 is arranged on one side of the mounting groove close to the side wall;

[0042] A pushing assembly 7 is arranged between the airbag 63 and the limiting plate 3. The pushing assembly 7 is used to drive the placing box assembly 5 to vibrate, so as to evenly lay the powder materials inside the placing box assembly 5.

[0043] In the embodiment applying the above technical solution, the powder materials to be transported are quantitatively introduced into a plurality of placing box assemblies 5 arranged on the powder feeding belt 2. When not energized, the placing box assembly 5 is elastically supported and limited by the energized solenoid and the airbag 63 on the side. When the placing box assembly 5 moves along with the transmission belt, the pushing assembly 7 between the airbag 63 and the limiting plate 3 pushes the placing box assembly 5 alternately left and right on both sides, so that the powder materials inside the placing box assembly 5 vibrate, and the powder materials are evenly distributed inside the placing box assembly 5, which is convenient for subsequent thickness adjustment and introduction of the powder materials.

[0044] The present invention can vibrate the powder materials during the powder material transmission process, make the powder materials evenly dispersed, and improve the accuracy of thickness adjustment.

[0045] The preferred technical solution in this embodiment:

[0046] Referring to Figures 3-5, the placement box assembly 5 does not contact the powder feeding belt 2. The placement box assembly 5 further includes two side plates 51, two fixing plates 52, two elastic plates 53 and a bottom plate 54. The two sides of the fixing plate 52 are respectively fixedly connected to two connecting plates 61. The two fixing plates 52 are respectively fixedly connected to the middle parts of the two sides of the two side plates 51 away from each other. The two elastic plates 53 are fixedly connected between the ends of the two side plates 51. The bottom plate 54 is fixedly connected to the two sides of the side plates 51 and the elastic plates 53. The two side plates 51, the two fixing plates 52 and the bottom plate 54 form a placement box for placing powder.

[0047] The cross section of the elastic plate 53 is L-shaped, and the whole is arranged in a wavy shape for deformation. Both the elastic plate 53 and the bottom plate 54 are made of elastic materials and bend along with the powder feeding belt 2.

[0048] The powder is received by the connected placement box, and the placement box is suspended between the two partition plates 4, ensuring the overall swing of the placement box during vibration. The powder is not directly placed on the powder feeding belt 2. The placement box is set to reduce the powder stuck between the powder feeding belt 2 and the limiting plate 3. By using the placement box, the loss of powder during the transfer process can be reduced. The placement box has a certain depth. During the swinging process of the placement box, the amount of powder scattered out is reduced, avoiding the waste of powder.

[0049] Since the entire placement box needs to vibrate, the elastic plates 53 on both sides can cause elastic deformation of both sides of the entire placement box. At the same time, the elastic energized solenoid 62 inside can play an elastic supporting role for the placement box, thus ensuring the multiple vibrations and resets of the placement box between the limiting plates 3 and evenly distributing the powder inside the placement box.

[0050] Refer to Figures 6-8 , the telescopic assembly 6 further includes a control module 64 and two connecting wires 65. The control module 64 is fixedly connected to the side wall of the installation groove and is fixedly connected to the airbag 63. Two installation openings are provided in the middle of the airbag 63. The two connecting wires 65 respectively pass through the two installation openings. One end of the connecting wire 65 is fixedly connected to the control module 64, and the other end is fixedly connected to the connecting plate 61. The connecting wire 65 is used to energize the energized solenoid 62.

[0051] The airbag 63 is made of elastic material, and a plurality of folding grooves are provided on the surface. A jet component 8 is provided on the airbag 63. The jet component 8 is used to spray the gas inside the airbag 63 to the side of the placement box.

[0052] During the process of powder transportation, the first half of the powder delivery belt 2 belongs to the vibration section. When the powder passes through the vibration section, the control module 64 does not perform power-on control. A plurality of energized solenoids 62 and a plurality of connecting wires 65 are used to elastically support and fix the position of the placement box. At the same time, during the entire vibration process, they can play a role in deformation and reset;

[0053] However, the second half of the powder delivery belt 2 is used for adjusting the thickness of the powder and for precisely controlling the quantity of the powder. At this time, power-on control is performed through the control module 64, and current is introduced into the energized solenoid 62 through the connecting wire 65, so that the energized solenoid 62 contracts when energized. At this time, the connecting wire 65 will cooperate with the deformation of the energized solenoid 62. The contracted energized solenoid 62 can fix the position of the placement box, thereby avoiding the shaking of the placement box during the thickness adjustment process and ensuring the precise control of the powder thickness.

[0054] Refer to Figures 6-8 , the jet component 8 includes an air pipe 81 and an air outlet strip 82. The air pipe 81 is L-shaped. One end of the air pipe 81 is fixedly connected to the air bag 63, passes through the side plate 51, and the other horizontal end is arranged parallel to the side plate 51. The air outlet strip 82 is fixedly connected to the bottom of the air pipe 81, and a sealing piece is arranged inside the air outlet strip 82;

[0055] An air intake component 9 is arranged between the air bag 63 and the connecting plate 61, and the air intake component 9 is used for inflating the air bag 63;

[0056] The air intake component 9 includes a sealing strip 91 and an air intake port 92. The air intake port 92 is opened on the side of the air bag 63 close to the connecting plate 61. The sealing strip 91 is fixedly connected to the connecting plate 61 and is used for squeezing and sealing the air intake port 92.

[0057] Since during the feeding process, some powder will accumulate on the bottom edge of the placement box. When the powder is exported, the powder squeezed and accumulated on the bottom edge of the placement box cannot be completely exported, resulting in inaccurate export quantity of the powder. It is necessary to export these powders that have not been completely exported to improve the accuracy.

[0058] When the control module 64 controls the energization solenoid 62 to be energized, after the energized solenoid undergoes telescopic movement due to energization, since the energized solenoid is fixedly connected to the fixed plate 52, the other end of the energized solenoid moves towards the fixed plate 52, causing the stretching and inflation of the airbag 63. When the thickness adjustment is completed and the powder needs to be discharged, the control module 64 cuts off the power supply, causing the energized solenoid to reset under the action of its own elastic force. During the reset process of the energized solenoid 62, the airbag 63 will be squeezed by the connecting plate 61, so that the gas inside the airbag 63 is squeezed into the trachea 81. When the gas inside the trachea 81 increases, the internal pressure will increase, squeezing the sealing strip 91 inside the air outlet strip 82, causing the excess gas to spray out from the position of the air outlet strip 82. The sprayed gas will impact the bottom edge of the placement box, flushing the powder accumulated inside the bottom edge, ensuring the complete discharge of the powder during the discharge process and reducing the waste of powder.

[0059] During the entire inflation and air guiding process, when not energized, the energized solenoid 62 itself has elasticity, squeezing the airbag 63, causing the sealing strip 91 to seal and block at the air inlet 92 position;

[0060] When the energized solenoid 62 starts to be energized, the energized solenoid 62 contracts towards the connecting plate 61. During the contraction process of the energized solenoid 62, the connecting plate 61 will move towards the connecting plate 61 position along with the energized solenoid 62. However, since the airbag 63 needs to be inflated and restored during the restoration process, the airbag 63 will be temporarily separated from the connecting plate 61, causing the sealing strip 91 to be separated from the air inlet 92, and the airbag 63 is inflated through the air inlet 92;

[0061] Finally, after the power is cut off, due to the elastic reset of the energized solenoid 62, the energized solenoid 62 squeezes the connecting plate 61. At this time, the sealing strip 91 seals the air inlet 92. Through the squeezing action of the connecting plate 61 on the airbag 63, the gas inside the airbag 63 is squeezed into the trachea 81, thereby flushing the powder.

[0062] The L-shaped trachea 81 is located at the bottom of the placement box, and some paddles can be set at the end to ensure that the powder can be toggled during vibration, thereby strengthening the dispersion effect of the powder.

[0063] Refer to Figure 9 As shown, the pushing component 7 includes a plurality of ejector rods 71 and a plurality of pushing rods 72. The ejector rods 71 are vertically and fixedly connected to the bent portion of the air jet component 8. The plurality of pushing rods 72 are fixedly connected to the two side limiting plates 3, and the pushing rods 72 are arranged at the feeding end of the powder feeding belt 2;

[0064] The ejector rod 71 is cylindrical, the ends of the plurality of push rods 72 are circular, and are used to push the ejector rod 71. The plurality of push rods 72 on both sides are staggered to push the ejector rod 71 alternately.

[0065] After the powder material is introduced into the placement box, due to the introduction, part of the powder material accumulates inside the placement box. When the powder material moves along the powder feeding belt 2, the plurality of ejector rods 71 inside the placement box will alternately contact the push rods 72 on both sides, thereby driving the placement box to vibrate evenly, so as to shake the powder material inside the placement box evenly, avoiding affecting the subsequent thickness adjustment.

[0066] The contact ends of the ejector rod 71 and the push rod 72 are both set to be circular, which can reduce the impact and friction generated during contact, so as to achieve a stable vibration effect.

[0067] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A powder feeding device for a pipeline anti-corrosion production line, comprising: A mounting frame (1), a powder feeding belt (2) fixed inside the mounting frame (1), and two limit plates (3) symmetrically fixed on both sides of the mounting frame (1), characterized in that a plurality of partitions (4) are equidistantly fixedly connected to the powder feeding belt (2), and two mounting grooves are symmetrically provided on both sides of the partition (4); A placement box assembly (5) is provided between two adjacent partitions (4), and the placement box assembly (5) is used to place powder; Two telescopic components (6) are symmetrically arranged inside the installation groove, and the telescopic components (6) include two connecting plates (61), two energized solenoids (62) and an air bag (63). The two energized solenoids (62) are symmetrically fixedly connected between the two connecting plates (61), one side of the connecting plate (61) is fixedly connected to the placement box component (5), and the air bag (63) is arranged on one side of the installation groove close to the side wall; The placement box assembly (5) does not contact the powder feeding belt (2). The placement box assembly (5) further comprises two side plates (51), two fixed plates (52), two elastic plates (53) and a bottom plate (54). The two sides of the fixed plate (52) are respectively fixedly connected to two connecting plates (61). The two fixed plates (52) are respectively fixedly connected to the middle of one side of the two side plates (51) away from each other. The two elastic plates (53) are fixedly connected between the ends of the two side plates (51). The bottom plate (54) is fixedly connected to both sides of the side plates (51) and the elastic plates (53). The two side plates (51), the two fixed plates (52) and the bottom plate (54) form a placement box for placing powder. A pushing component (7) is provided between the airbag (63) and the limiting plate (3), and the pushing component (7) is used to drive the placement box component (5) to vibrate, so as to evenly spread the powder inside the placement box component (5); The airbag (63) is made of an elastic material and has a plurality of folding grooves on its surface. The airbag (63) is provided with an air jet component (8), and the air jet component (8) is used to spray the gas inside the airbag (63) toward the side of the placement box; The air injection assembly (8) comprises an air pipe (81) and an air outlet strip (82); the air pipe (81) is L-shaped; one end of the air pipe (81) is fixedly connected to the air bag (63) and passes through the side plate (51); a horizontal section is arranged parallel to the side plate (51); the air outlet strip (82) is fixedly connected to the bottom of the air pipe (81); and a sealing sheet is arranged inside the air outlet strip (82).

2. A powder feeding device for a pipeline anti-corrosion production line according to claim 1, characterized in that: The elastic plate (53) has an L-shaped cross section and is configured as a wave shape for deformation as a whole; the elastic plate (53) and the bottom plate (54) are both made of elastic material and are bent along with the powder feeding belt (2).

3. A powder feeding device for a pipeline anti-corrosion production line according to claim 2, characterized in that: The telescopic assembly (6) further comprises a control module (64) and two connecting wires (65); the control module (64) is fixedly connected to the side wall of the mounting groove and is fixedly connected to the airbag (63); two mounting openings are provided in the middle of the airbag (63); the two connecting wires (65) pass through the two mounting openings respectively; one end of the connecting wire (65) is fixedly connected to the control module (64) and the other end is fixedly connected to the connecting plate (61); the connecting wire (65) is used to energize the energized solenoid (62).

4. A powder feeding device for a pipeline anti-corrosion production line according to claim 3, characterized in that: An air intake assembly (9) is provided between the air bag (63) and the connecting plate (61), and the air intake assembly (9) is used to inflate air into the air bag (63).

5. The powder feeding device for a pipeline anti-corrosion production line according to claim 4, characterized in that: The air intake assembly (9) comprises a sealing strip (91) and an air intake port (92). The air intake port (92) starts at a side of the airbag (63) close to the connecting plate (61). The sealing strip (91) is fixedly connected to the connecting plate (61) and is used to squeeze and seal the air intake port (92).

6. The powder feeding device for a pipeline anti-corrosion production line according to claim 5, characterized in that: The pushing assembly (7) comprises a plurality of push rods (71) and a plurality of push rods (72); the push rods (71) are vertically fixedly connected to the bend of the jet assembly (8); the plurality of push rods (72) are fixedly connected to the limiting plates (3) on both sides; and the push rods (72) are arranged at the feeding end of the powder feeding belt (2).

7. A powder feeding device for a pipeline anti-corrosion production line according to claim 6, characterized in that: The push rod (71) is cylindrical, the ends of the plurality of push rods (72) are arranged in a circular shape and are used to push the push rod (71), and the plurality of push rods (72) on both sides are arranged in a staggered manner and are used to push the push rod (71) in a staggered manner.

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