An inner wall anticorrosion film forming device universal for curved and straight pipes

Abstract

The invention discloses an inner wall anti-corrosion film-forming device universal for curved and straight pipes, belonging to the field of inner wall anti-corrosion of pipes. The inner wall anti-corrosion film-forming device universal for curved and straight pipes comprises a scraper and a sealing plate, wherein the scraper is fixedly connected with a positioning plate at one end close to the sealing plate, and an inner adaptive coating tube is fixedly connected between the sealing plate and the positioning plate. The invention fills the corrosion inhibitor between the sealing plate and the positioning plate sufficiently so that the corrosion inhibitor is in full contact with the inner wall of the pipe in this area, and simultaneously brushes the inner wall of the pipe with the aid of multiple soft brushes, thereby effectively eliminating the air gap between the corrosion inhibitor and the inner wall of the pipe, so that a uniform and complete anti-corrosion film is formed on the inner wall of the pipe, and the invention has the characteristics of high quality and high efficiency of film-forming. Moreover, through the inner adaptive coating tube composed of a rubber hose, an elastic band and a soft brush, the invention can be applied to both straight pipes and irregular curved pipes, and the coating and film-forming process with the same effect can be performed on both straight and curved pipes, and the invention has the characteristics of super high practicality.

Description

Technical Field

[0001] The invention relates to the field of pipe inner wall corrosion protection, and more specifically to an inner wall corrosion protection film-forming device universal for curved and straight pipes. Background Art

[0002] Pipe anti-corrosion refers to the corrosion caused by chemical reaction of steel pipes in use and transportation under the influence of the use environment and the conveying medium. Corrosion is extremely harmful to metal pipes, because no matter how good the external coating is or how advanced the external anti-corrosion process is, if the internal anti-corrosion is not carried out, it will cause corrosion and premature scrapping. Internal corrosion is hidden and its existence is often ignored. At the same time, due to the particularity of the conveying medium, the internal corrosion of the pipe is very serious, even far exceeding the external corrosion. Statistics show that up to now, the corrosion perforation of the inner wall of the pipeline accounts for 90% of the total corrosion perforation.

[0003] The coating technology inside the pipe is the research focus of the inside pipe anti-corrosion technology, and the smaller the pipe diameter, the more difficult it is to coat. In the existing technology, spray film forming means are often used to form an anti-corrosion layer on the inner wall of the pipe. First of all, this method is difficult to spray the corrosion inhibitor on the inner wall of the pipe evenly and comprehensively, resulting in uneven thickness of the anti-corrosion film coated inside the pipe, and local corrosion is prone to occur in the pipe. In addition, the existing inside pipe spraying is also difficult to use inside curved pipes. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide an inner wall anti-corrosion film-forming device that is universal for curved and straight pipes. It fills the corrosion inhibitor between the sealing plate and the positioning plate sufficiently so that the corrosion inhibitor is in full contact with the inner wall of the pipe in this area, and at the same time uses multiple soft brushes to brush the inner wall of the pipe, thereby effectively eliminating the air gap between the corrosion inhibitor and the inner wall of the pipe, so that a uniform and complete anti-corrosion film is formed on the inner wall of the pipe, and the film-forming device has high-quality and high-efficiency film-forming characteristics. In addition, through the internal adaptive coating tube composed of a rubber hose, an elastic band and a soft brush, the present invention can be applied to both straight pipes and irregular curved pipes, and the coating and film-forming process with the same effect can be performed on straight and curved pipes, and has super high practicality.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A device for forming an inner wall anti-corrosion film universal for curved and straight pipes, comprising a scraper and a sealing plate, wherein one end of the scraper close to the sealing plate is fixedly connected to a positioning plate, an inner adaptive coating tube is fixedly connected between the sealing plate and the positioning plate, the inner adaptive coating tube comprises a rubber hose fixedly connected between the scraper and the sealing plate, a plurality of evenly distributed overflow holes are provided on the rubber hose, a plurality of evenly arranged elastic bands are provided on the outside of the rubber hose, the left and right lower ends of the elastic bands are both bonded to the outer surface of the rubber hose, a plurality of evenly distributed soft brushes are fixedly connected to the outer surface of the elastic band, a traction belt is fixedly connected to the end of the sealing plate away from the positioning plate, the end of the traction belt is connected to a traction device, a material guide pipe is provided on the side of the rubber hose away from the sealing plate, and the material guide pipe penetrates The interior of the scraper and the positioning plate are communicated with the rubber hose, and the end of the guide tube away from the rubber hose is threadedly connected to the feed pipe, and the end of the feed pipe away from the guide tube is connected to the feed equipment. The present invention fills the corrosion inhibitor between the sealing plate and the positioning plate sufficiently, so that the corrosion inhibitor is in full contact with the inner wall of the pipe in this area, and at the same time uses multiple soft brushes to brush the inner wall of the pipe, effectively eliminating the air gap between the corrosion inhibitor and the inner wall of the pipe, so that a uniform and complete anti-corrosion film is formed on the inner wall of the pipe, and the film-forming characteristics of high quality and high efficiency are achieved. In addition, the internal adaptive coating tube composed of the rubber hose, the elastic band and the soft brush makes the present invention applicable to both straight pipes and irregular curved pipes, and the same coating and film-forming process can be performed on both straight and curved pipes, and the present invention has super high practicality.

[0009] Furthermore, the positioning plate includes a heat conducting plate fixedly connected between the rubber hose and the scraper, the outer end of the heat conducting plate is fixedly connected with a plurality of evenly distributed support columns, the support column has a ball head shape at the end away from the heat conducting plate, a circular hole is opened on the heat conducting plate, the material guide tube is fixedly connected to the inside of the circular hole, and is supported inside the pipe by the positioning plate, so that the scraper can move in a balanced and stable manner inside the pipe, ensuring a constant gap between the scraper and the inner wall of the pipe, so that the bending deformation of the rubber hose in the pipe is not easy to affect the coating stability of the scraper, and through the coordinated use of the heat conducting plate and the support column, the positioning plate will not hinder the flow and filling of the corrosion inhibitor while playing a supporting and stabilizing role.

[0010] Furthermore, a plurality of grooves are formed at one end of the scraper away from the positioning plate, and a heating wire is fixedly connected to the inner wall of the groove. A controller is fixedly connected to one end of the scraper away from the positioning plate, and the plurality of grooves are evenly distributed on the outside of the controller. The heating wire and the controller are electrically connected. Through the heating of the heating wire, on the one hand, the internal temperature of the pipe is increased, so that the moisture in the film formed by the scraper on the inner wall of the pipe is quickly evaporated, thereby accelerating the drying and forming of the film. On the other hand, the heat of the heating wire is transferred to the inner and outer sides of the positioning plate and the rubber hose in turn through the scraper, so as to preheat the corrosion inhibitor in the rubber hose and the inner wall of the pipe, thereby further accelerating the drying and forming of the film formed by the scraping.

[0011] Furthermore, a dustproof net is provided on the outside of the heating wire, and the outer wall of the dustproof net is fixedly connected to the inner wall of the groove. The dustproof net not only prevents the heating wire from dust, but also protects the heating wire, making it less susceptible to collision damage from external objects.

[0012] Furthermore, the outer wall of the scraper is in a conical shape, a through hole is opened on the scraper, and the material guide tube is fixedly connected to the inside of the through hole. The conical outer wall shape of the scraper can facilitate scraping and coating on the inner wall of the pipe.

[0013] Furthermore, the sealing plate includes an inner plate and a rubber layer, and the inner plate is fixedly connected to the outer surface of the rubber layer, so that the formed sealing plate and the inner wall of the pipe have good sealing performance, which facilitates the corrosion inhibitor to be filled between the sealing plate and the positioning plate and cover the inner wall of the pipe.

[0014] Furthermore, the difference between the outer diameter of the sealing plate and the outer diameter of the rubber hose is the same as the length of the soft brush, ensuring that the soft brush is in full contact with the inner wall of the pipe. By brushing the inner wall of the pipe with the soft brush, the corrosion inhibitor is in full contact with the inner wall of the pipe, effectively eliminating the generation of bubbles between the corrosion inhibitor and the inner wall of the pipe, making the scraping film more uniform and complete.

[0015] An inner wall anticorrosion film forming device universal for curved and straight pipes, and the use method thereof is as follows:

[0016] S1. Install the device into the pipe to be coated, connect the end of the traction belt to the traction equipment, connect the end of the feed pipe to the discharge end of the feed equipment, and start heating the electric heating wire through the controller;

[0017] S2, start the feeding equipment, so that the corrosion inhibitor passes into the rubber hose through the feeding pipe and the guide pipe in turn, and enters between the rubber hose and the inner wall of the pipe through the overflow hole on the rubber hose;

[0018] S3. After the space between the sealing plate and the positioning plate is filled with corrosion inhibitor, start the traction equipment, drive the entire device to slowly move forward along the inside of the pipe through the traction belt, and coat the inner wall of the pipe. At the same time, the conveying equipment continues to slowly add corrosion inhibitor to the rubber hose at a certain conveying rate.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] (1) This solution allows the corrosion inhibitor to fully fill the space between the sealing plate and the positioning plate, allowing the corrosion inhibitor to fully contact the inner wall of the pipe in this area, and uses multiple soft brushes to brush the inner wall of the pipe, effectively eliminating the air gap between the corrosion inhibitor and the inner wall of the pipe, so that a uniform and complete anti-corrosion film is formed on the inner wall of the pipe, with high-quality and high-efficiency film-forming characteristics. In addition, the internal adaptive coating tube composed of a rubber hose, an elastic band and a soft brush makes the present invention applicable to both straight pipes and irregular curved pipes, and the coating and film-forming process with the same effect can be performed on straight and curved pipes, which has extremely high practicality.

[0022] (2) The positioning plate includes a heat conducting plate fixedly connected between the rubber hose and the scraper, the outer end of the heat conducting plate is fixedly connected with a plurality of evenly distributed support columns, the end of the support column away from the heat conducting plate is in the shape of a ball head, a circular hole is opened on the heat conducting plate, the guide tube is fixedly connected to the inside of the circular hole, and is supported inside the pipe by the positioning plate, so that the scraper can move in a balanced and stable manner inside the pipe, ensuring that the gap between the scraper and the inner wall of the pipe is constant, so that the bending deformation of the rubber hose in the pipe is not easy to affect the coating stability of the scraper, and through the coordinated use of the heat conducting plate and the support column, the positioning plate will not hinder the flow and filling of the corrosion inhibitor while playing a supporting and stabilizing role.

[0023] (3) A plurality of grooves are provided at one end of the scraper away from the positioning plate, and a heating wire is fixedly connected to the inner wall of the groove. A controller is fixedly connected to the other end of the scraper away from the positioning plate. The plurality of grooves are evenly distributed on the outside of the controller. The heating wire and the controller are electrically connected. Through the heating of the heating wire, on the one hand, the temperature inside the pipe is increased, so that the water in the film formed by the scraper on the inner wall of the pipe is quickly evaporated, thereby accelerating the drying and forming of the film. On the other hand, the heat of the heating wire is transferred to the inner and outer sides of the positioning plate and the rubber hose in turn through the scraper, so as to preheat the corrosion inhibitor in the rubber hose and the inner wall of the pipe, thereby further accelerating the drying and forming of the film formed by the scraping.

[0024] (4) A dustproof net is provided on the outside of the heating wire, and the outer wall of the dustproof net is fixedly connected to the inner wall of the groove. The dustproof net not only prevents the heating wire from dust, but also protects the heating wire from damage by collision with external objects.

[0025] (5) The outer wall of the scraper is in a conical shape, and a through hole is opened on the scraper. The material guide tube is fixedly connected to the inside of the through hole. The conical outer wall of the scraper can facilitate scraping and coating on the inner wall of the pipe to form a film.

[0026] (6) The sealing plate includes an inner plate and a rubber layer. The inner plate is fixedly connected to the outer surface of the rubber layer, so that the formed sealing plate and the inner wall of the pipe have good sealing performance, which facilitates the corrosion inhibitor to be filled between the sealing plate and the positioning plate and covered on the inner wall of the pipe.

[0027] (7) The difference between the outer diameter of the sealing plate and the outer diameter of the rubber hose is the same as the length of the soft brush, ensuring that the soft brush is in full contact with the inner wall of the pipe. The corrosion inhibitor is fully in contact with the inner wall of the pipe by brushing the inner wall of the pipe with the soft brush, effectively eliminating the generation of bubbles between the corrosion inhibitor and the inner wall of the pipe, making the scraping film more uniform and complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A perspective view of the present invention;

[0029] Figure 2 An exploded view of the present invention;

[0030] Figure 3 It is a front structural schematic diagram of the present invention;

[0031] Figure 4 for Figure 3 The structural diagram at A in the middle;

[0032] Figure 5 This is a schematic diagram of the front structure of the present invention when in use;

[0033] Figure 6 It is a schematic diagram of the structure of the elastic band of the present invention when it is deformed;

[0034] Figure 7 A three-dimensional diagram of a positioning plate of the present invention;

[0035] Figure 8 It is a front structural schematic diagram of the scraper of the present invention;

[0036] Fig. 9 It is a schematic diagram of the top surface structure of the scraper of the present invention.

[0037] Description of the numbers in the figure:

[0038] 1 traction belt, 2 scraper, 201 through hole, 202 groove, 3 positioning plate, 31 heat conducting plate, 32 support column, 33 round hole, 41 rubber hose, 42 elastic belt, 43 soft brush, 5 sealing plate, 51 inner plate, 52 rubber layer, 6 controller, 7 dustproof net, 8 material guide pipe, 9 feed pipe, 10 heating wire. DETAILED DESCRIPTION

[0039] The following will combine 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 the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 communication 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.

[0042] Example:

[0043] See also Figure 1 and Figure 2 , a device for forming an inner wall anticorrosion film for curved and straight pipes, comprising a scraper 2 and a sealing plate 5, wherein a positioning plate 3 is fixedly connected to one end of the scraper 2 near the sealing plate 5, and an inner adaptable coating tube is fixedly connected between the sealing plate 5 and the positioning plate 3, see Figure 3 and Figure 4 The inner adaptable coating tube includes a rubber hose 41 fixedly connected between the scraper 2 and the sealing plate 5. The rubber hose 41 is provided with a plurality of evenly distributed overflow holes. The corrosion inhibitor inside the rubber hose 41 can enter between the rubber hose 41 and the inner wall of the tube through the overflow holes and fully contact the inner wall of the tube. Through the use of the rubber hose 41, the device can be applied to both straight tubes and irregular curved tubes. The outer side of the rubber hose 41 is provided with a plurality of evenly arranged elastic bands 42. The left and right lower ends of the elastic bands 42 are both bonded to the outer surface of the rubber hose 41. The outer surface of the elastic band 42 is fixedly connected with a plurality of evenly distributed soft brushes 43. Please refer to Figure 6The elastic belt 42 has elastic deformation ability, and a sufficient amount of corrosion inhibitor is continuously introduced into the rubber hose 41. Under the extrusion of excessive corrosion inhibitor, the elastic belt 42 is deformed and squeezed outward, driving the soft brush 43 to fully contact and squeeze the inner wall of the tube, brushing the inner wall of the tube, and effectively eliminating the generation of bubbles between the corrosion inhibitor and the inner wall of the tube. The end of the sealing plate 5 away from the positioning plate 3 is fixedly connected to the traction belt 1, and the end of the traction belt 1 is connected to the traction equipment. A material guide pipe 8 is provided on the side of the rubber hose 41 away from the sealing plate 5. The material guide pipe 8 passes through the interior of the scraper 2 and the positioning plate 3 and is connected to the rubber hose 41. The end of the material guide pipe 8 away from the rubber hose 41 is threadedly connected to a feed pipe 9, and the end of the feed pipe 9 away from the material guide pipe 8 is connected to the feed equipment.

[0044] See also Figure 7 The positioning plate 3 includes a heat conducting plate 31 fixedly connected between the rubber hose 41 and the scraper 2. The outer end of the heat conducting plate 31 is fixedly connected to a plurality of evenly distributed support columns 32. The end of the support column 32 away from the heat conducting plate 31 is in the shape of a ball head. A circular hole 33 is opened on the heat conducting plate 31. The guide tube 8 is fixedly connected to the inside of the circular hole 33 and is supported inside the pipe by the positioning plate 3 so that the scraper 2 can move in a balanced and stable manner inside the pipe, ensuring a constant gap between the scraper 2 and the inner wall of the pipe, so that the bending deformation of the rubber hose 41 in the pipe is not easy to affect the coating stability of the scraper 2. In addition, through the coordinated use of the heat conducting plate 31 and the support column 32, the positioning plate 3 will not hinder the flow and filling of the corrosion inhibitor while playing a supporting and stabilizing role.

[0045] See also Figure 8 and Fig. 9 The end of the scraper 2 away from the positioning plate 3 is provided with a plurality of grooves 202, the inner wall of the groove 202 is fixedly connected with a heating wire 10, the end of the scraper 2 away from the positioning plate 3 is fixedly connected with a controller 6, the plurality of grooves 202 are evenly distributed on the outside of the controller 6, the heating wire 10 and the controller 6 are electrically connected, the scraper 2 and the positioning plate 3 are both made of high thermal conductivity materials, through the heating of the heating wire 10, on the one hand, the temperature inside the pipe is increased, so that the water in the film formed by the scraper 2 on the inner wall of the pipe is quickly evaporated, and the drying of the film is accelerated. On the other hand, the heat of the heating wire 10 is transferred to the inner and outer sides of the positioning plate 3 and the rubber hose 41 in turn through the scraper 2, which can preheat the corrosion inhibitor in the rubber hose 41 and the inner wall of the pipe, and further accelerate the drying and forming of the film formed by scraping. A dustproof net 7 is provided on the outer side of the heating wire 10, and the outer wall of the dustproof net 7 is fixedly connected to the inner wall of the groove 202. The dustproof net 7 has a dust-proof effect on the heating wire 10 on the one hand, and a protective effect on the heating wire 10 on the other hand, so that the heating wire 10 is not easily damaged by collision with external objects.

[0046] See also Figure 5The outer wall of the scraper 2 is conical in shape, and a through hole 201 is opened on the scraper 2. The guide tube 8 is fixedly connected to the inside of the through hole 201. The conical outer wall shape of the scraper 2 can be conveniently applied to form a film on the inner wall of the pipe. The sealing plate 5 includes an inner plate 51 and a rubber layer 52. The inner plate 51 is fixedly connected to the outer surface of the rubber layer 52, so that the formed sealing plate 5 has good sealing performance with the inner wall of the pipe, which facilitates the corrosion inhibitor to be filled between the sealing plate 5 and the positioning plate 3 and cover the inner wall of the pipe.

[0047] See also Figure 5 The difference between the outer diameter of the sealing plate 5 and the outer diameter of the rubber hose 41 is the same as the length of the soft brush 43, ensuring that the soft brush 43 is in full contact with the inner wall of the pipe. The soft brush 43 is used to apply paint on the inner wall of the pipe, so that the corrosion inhibitor is in full contact with the inner wall of the pipe, effectively eliminating the generation of bubbles between the corrosion inhibitor and the inner wall of the pipe, and making the scraping film more uniform and complete.

[0048] An inner wall anti-corrosion film-forming device universal for curved and straight pipes, and a method of using the device is as follows:

[0049] S1. Install the device into the pipe to be coated, connect the end of the traction belt 1 to the traction device, connect the end of the feed pipe 9 to the discharge end of the feed device, and start heating the heating wire 10 through the controller 6;

[0050] S2, start the feeding equipment, so that the corrosion inhibitor passes into the rubber hose 41 through the feeding pipe 9 and the guide pipe 8 in turn, and enters between the rubber hose 41 and the inner wall of the pipe through the overflow hole on the rubber hose 41;

[0051] S3. After the space between the sealing plate 5 and the positioning plate 3 is filled with corrosion inhibitor, the traction device is started, and the traction belt 1 drives the entire device to slowly move forward along the inside of the pipe to coat the inner wall of the pipe. At the same time, the conveying equipment continues to slowly replenish the corrosion inhibitor into the rubber hose 41 at a certain conveying rate.

[0052] The present invention fills the corrosion inhibitor sufficiently between the sealing plate 5 and the positioning plate 3 so that the corrosion inhibitor is in full contact with the inner wall of the pipe in this area, and simultaneously brushes the inner wall of the pipe with multiple soft brushes 43, thereby effectively eliminating the air gap between the corrosion inhibitor and the inner wall of the pipe, so that a uniform and complete anti-corrosion film is formed on the inner wall of the pipe, and the film-forming characteristics of high quality and high efficiency are achieved. In addition, the inner adaptive coating tube composed of the rubber hose 41, the elastic band 42 and the soft brush 43 makes the present invention applicable to both straight pipes and irregular curved pipes, and the coating and film-forming process with the same effect can be performed on both straight and curved pipes, and the present invention has the characteristics of super high practicality.

[0053] The above is only a preferred specific implementation manner of the present invention; but the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A method for using an inner wall anticorrosion film-forming device universal for curved and straight pipes, characterized in that: The method comprises the following steps: S1. The device is installed inside the pipe to be coated, the end of the traction belt (1) is connected to the traction device, the end of the feed pipe (9) is connected to the discharge end of the feed device, and the heating wire (10) is started to heat through the controller (6); S2, starting the feeding equipment, so that the corrosion inhibitor is passed into the rubber hose (41) through the feeding pipe (9) and the guide pipe (8) in sequence, and enters between the rubber hose (41) and the inner wall of the pipe through the overflow hole on the rubber hose (41); The inner wall anticorrosive film-forming device for curved and straight pipes comprises a scraper (2) and a sealing plate (5), wherein one end of the scraper (2) close to the sealing plate (5) is fixedly connected to a positioning plate (3), and an inner adaptive coating tube is fixedly connected between the sealing plate (5) and the positioning plate (3), and the inner adaptive coating tube comprises a rubber hose (41) fixedly connected between the scraper (2) and the sealing plate (5), and the rubber hose (41) is provided with a plurality of evenly distributed overflow holes, and the outer side of the rubber hose (41) is provided with a plurality of evenly arranged elastic bands (42), and the left and right lower ends of the elastic band (42) are both bonded to the outer surface of the rubber hose (41), and the elastic band (42) The outer surface of the scraper (2) is fixedly connected with a plurality of evenly distributed soft brushes (43); one end of the sealing plate (5) away from the positioning plate (3) is fixedly connected with a traction belt (1); the end of the traction belt (1) is connected to a traction device; a material guide pipe (8) is provided on the side of the rubber hose (41) away from the sealing plate (5); the material guide pipe (8) passes through the interior of the scraper (2) and the positioning plate (3) and is in communication with the rubber hose (41); one end of the material guide pipe (8) away from the rubber hose (41) is threadedly connected with a material delivery pipe (9); the end of the material delivery pipe (9) away from the material guide pipe (8) is connected to the material delivery device; the positioning plate (3) includes a material guide pipe (8) fixedly connected to the rubber hose (41) and the scraper (2); The heat conducting plate (31) is provided between the plates (2), the outer end of the heat conducting plate (31) is fixedly connected to a plurality of evenly distributed support columns (32), the end of the support column (32) away from the heat conducting plate (31) is in the shape of a ball head, a circular hole (33) is provided on the heat conducting plate (31), and the material guide tube (8) is fixedly connected to the inside of the circular hole (33); the end of the scraper (2) away from the positioning plate (3) is provided with a plurality of grooves (202), the inner wall of the groove (202) is fixedly connected to the electric heating wire (10), the end of the scraper (2) away from the positioning plate (3) is fixedly connected to the controller (6), and the plurality of grooves (202) are evenly distributed on the controller (6) ), the heating wire (10) and the controller (6) are electrically connected; a dustproof net (7) is provided on the outside of the heating wire (10), and the outer wall of the dustproof net (7) is fixedly connected to the inner wall of the groove (202); the outer wall of the scraper (2) is conical, and a through hole (201) is opened on the scraper (2), and the guide tube (8) is fixedly connected to the inside of the through hole (201); the sealing plate (5) includes an inner plate (51) and a rubber layer (52), and the inner plate (51) is fixedly connected to the outer surface of the rubber layer (52); the difference between the outer diameter of the sealing plate (5) and the outer diameter of the rubber hose (41) is the same as the length of the soft brush (43).

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