A high viscosity industrial white oil production equipment

Abstract

The invention discloses a high-viscosity industrial white oil production equipment, comprising a shell, a motor is arranged on the top of the shell, a main shaft is arranged inside the shell, a plurality of stirring members are arranged on the outside of the main shaft, the motor output shaft is transmission-connected with the main shaft, an intermediate shell is arranged on the top of the shell, a matching box is arranged between the main shaft and the motor output shaft, an air intake pipe is connected to the outside of the matching box, and if the viscosity of the white oil is relatively high, a movable sleeve will be pulled to move outward during rotation, the greater the viscosity, the greater the moving distance, the smaller the overlapping through hole of the second hole and the first hole, the smaller the discharge rate, so that the viscosity of the white oil can be automatically detected to understand the rotation speed so as to accurately add materials, and the whole process of adding materials is more scientific and uniform.

Description

Technical Field

[0001] The invention belongs to the field of white oil production equipment, and in particular relates to high-viscosity industrial white oil production equipment. Background Art

[0002] Industry refers to the industry or project of raw material collection and product processing and manufacturing. Industry is the product of the development of social division of labor. After several development stages of handicraft industry and machine industry, industry is a component of the secondary industry. It is mainly divided into light industry and heavy industry. The scope of industry is very wide. Among them, industrial white oil needs to be processed in reactors during production.

[0003] During the processing, industrial white oil often needs to add some materials to be processed into the final industrial white oil. In the process of adding materials, most of them are poured directly. This method of adding easily concentrates the materials in one place, making it difficult to stir evenly and fully blend. Summary of the invention

[0004] The object of the present invention is to provide a high-viscosity industrial white oil production equipment to solve the above-mentioned problems.

[0005] To achieve the above object, the present invention provides the following technical solution: a high-viscosity industrial white oil production equipment, comprising a housing, a motor is arranged on the top of the housing, a main shaft is arranged inside the housing, a plurality of stirring members are arranged on the outside of the main shaft, the motor output shaft is transmission-connected with the main shaft, an intermediate housing is arranged on the top of the housing, a matching box is arranged between the main shaft and the motor output shaft, and an air intake pipe is connected to the outside of the matching box;

[0006] The main shaft comprises a shaft housing fixedly connected to the matching box, an air flow groove 1 is arranged inside the shaft housing, a connecting hole connected to the inside of the stirring member is arranged on one side of the air flow groove 1, a material pipeline is fixedly connected to one end of the air inlet pipe extending to the inside of the main shaft, a plurality of ejection pipes arranged in a straight line are arranged on one side of the material pipeline, and one end of the ejection pipes extends to the inside of the connecting hole, and the plurality of ejection pipes are adapted to the plurality of stirring members;

[0007] The stirring member includes an inner rod fixedly connected to the main shaft, a second airflow groove connected to the ejection pipe is arranged inside the inner rod, a plurality of first holes connected to the second airflow groove are opened on the inner rod, a movable sleeve is sleeved on the outer side of the inner rod, a plurality of second holes matched with the first holes are opened on the movable sleeve, an elastic component is arranged between the movable sleeve and the inner rod, and the greater the distance from the movable sleeve to the inner rod, the smaller the overlapping through-hole portion between the second hole and the first hole is.

[0008] Preferably, the elastic component includes a mounting groove opened inside the inner rod away from one end of the main shaft, an electromagnet is fixedly connected to one side of the mounting groove, a metal plate is adsorbed on one side of the electromagnet, a telescopic rod is fixedly connected to one side of the metal plate, one end of the telescopic rod is fixedly connected to the inner wall of the movable sleeve, a spring is sleeved on the outside of the telescopic rod, two ends of the spring are respectively connected to the metal plate and the inner wall of the movable sleeve, a protrusion for limiting the maximum moving distance of the metal plate is also processed on the inside of the mounting groove, and the bottom end of the second airflow groove is arranged in an arc with a first hole farthest from the main shaft.

[0009] Preferably, a moving block is fixedly connected to one end of the moving sleeve away from the main shaft, and the moving block is gradually enlarged from the side of the moving sleeve where the second hole is provided to the side where the second hole is not provided;

[0010] The moving block is processed with an arc surface on one side close to the inner wall of the shell, and the arc surface is concentric with the arc of the inner wall of the shell. After the maximum extension of the telescopic rod, the arc surface on the moving block interacts and overlaps with the inner wall of the shell.

[0011] Preferably, the stirring member is arranged on the outer interface of the main shaft to form an acute angle with the central axis of the main shaft, and the second hole is placed on the rear side of the stirring member in the rotation direction.

[0012] Preferably, the sum of the moving widths of the moving blocks and the arc surface in the longitudinal direction of the plurality of stirring members is exactly the same as the vertical portion of the inner wall of the shell.

[0013] Preferably, an arc-shaped guide groove is provided in the arcuate portion at the bottom end of the shell, and an electric heating layer is provided on the surface of the arc-shaped guide groove. A discharge hole is opened at the lowest point of the arc-shaped guide groove, and the discharge hole is connected to a discharge pipe.

[0014] Preferably, the outer cylindrical side of the matching box is movably connected to the central part via a sealed bearing, and the air intake pipe passes through the outer cylindrical side of the matching box without affecting the rotation of the main shaft driven by the motor and without driving the rotation of the air intake pipe.

[0015] Preferably, the number of the air inlet pipes is set to two, one of which extends into the interior of the matching box and is directly connected to the air flow groove, and the other air inlet pipe is connected to the material pipeline through a transition box.

[0016] Preferably, the transition box includes a box body fixedly connected to the ejection pipe and the inner wall of the shaft housing, a cover plate is connected to the top of the box body through a bearing, and a cavity connected to the ejection pipe is formed between the cover plate and the box body, and one end of the air inlet pipe is fixedly connected to the cover plate and communicated with the cavity.

[0017] Preferably, an air pump and a material pump are respectively provided at one end of the two air inlet pipes, and the air inlet pipes of the air pump extend to the interior of the shell.

[0018] Technical effects and advantages of the present invention:

[0019] 1. The material discharge rate can be controlled by using the fact that the greater the distance between the moving sleeve and the inner rod, the smaller the overlapped through-hole portion between the second hole and the first hole. This is because when the initial viscosity of the white oil is relatively high, the rotation speed of the stirring rod will be reduced by resistance. If the discharge rate is high at this time, the mixing uniformity of the local materials will be reduced, which is not conducive to uniform mixing. At this time, if the viscosity of the white oil is relatively high, the moving sleeve will be pulled outward during the rotation process. The greater the viscosity, the greater the moving distance, and the smaller the overlapped through-hole portion between the second hole and the first hole, the smaller the discharge rate. Therefore, the viscosity of the white oil can be automatically detected to understand the rotation speed and accurately add materials. The whole process of adding materials is more scientific and uniform.

[0020] 2. When the viscosity exceeds a certain amount, that is, when the movable sleeve is stretched to the maximum, the movable block and the arc surface can be driven to contact the inner wall of the shell, so that the white oil on the inner wall of the shell can be continuously scraped clean when the viscosity is too high. This prevents the white oil on the inner wall of the shell from solidifying due to insufficient stirring force to pull the white oil on the inner wall of the shell to rotate, thus achieving the effect of automatically scraping the inner wall of the shell when the viscosity is too high;

[0021] 3. The stirring piece as a whole forms an acute angle with the main shaft axis, which can facilitate the movable sleeve on the rotating stirring piece to move outward due to viscosity to realize the discharge rate of the material, and then the second hole is placed on the rear side of the rotating direction of the stirring piece to further prevent the second hole from being blocked under the premise that the second hole continuously sprays inert gas to prevent the second hole from being blocked, because a certain space is formed in the area where the stirring piece is closely attached after the stirring track, and the second hole is opened in this space to further reduce the blockage of the second hole;

[0022] 4. After the final stirring is completed, the electromagnet can be powered off. At this time, the movable sleeve can be moved outward with the movable block by the rotating centrifugal force of the main shaft until it contacts the inner wall of the shell, and then the white oil is scraped from the inside of the shell. Then, the sum of the moving blocks on the multiple stirring elements and the moving width in the longitudinal direction of the arc surface is exactly the same as the vertical part of the inner wall of the shell, so that the moving blocks on the multiple spiral stirring elements can be used to continuously scrape the white oil on the inner wall of the shell to the bottom arc guide groove, and finally it can be discharged through the discharge hole, and the electric heating layer on the arc guide groove can also be used for final heating to reduce the viscosity of the residual white oil for cleaning and discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a cross-sectional structural schematic diagram of the present invention;

[0024] Figure 2 It is a front view of the present invention;

[0025] Figure 3 This is a schematic diagram of the installation structure of the stirring member and the main shaft of the present invention;

[0026] Figure 4 A three-dimensional diagram of a stirring member of the present invention;

[0027] Figure 5 An exploded view of the stirring member of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal structure of the inner rod of the present invention;

[0029] Figure 7 It is a schematic diagram of the transition box structure of the present invention.

[0030] In the figure: 1, stirring member; 101, inner rod; 102, second hole; 103, movable sleeve; 104, movable block; 105, arc surface; 106, spring; 107, mounting groove; 108, telescopic rod; 109, first hole; 110, air flow groove 2; 2, material pump; 3, main shaft; 301, air flow groove 1; 302, shaft housing; 303, connecting hole; 304, material pipeline; 305, ejection pipeline; 4, housing; 5, motor; 6, intermediate housing; 7, air inlet pipe; 8, matching box; 9, suction pipeline; 10, air pump; 11, discharge hole; 12, arc guide groove; 13, acute angle; 14, electromagnet; 15, protrusion; 16, metal plate; 17, transition box; 171, cover plate; 172, box body. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention provides Figure 1-Figure 7 A high-viscosity industrial white oil production device as shown in the figure comprises a housing 4, a motor 5 is arranged on the top of the housing 4, a main shaft 3 is arranged inside the housing 4, a plurality of stirring members 1 are arranged on the outside of the main shaft 3, an output shaft of the motor 5 is transmission-connected with the main shaft 3, an intermediate housing 6 is arranged on the top of the housing 4, a matching box 8 is arranged between the main shaft 3 and the output shaft of the motor 5, and an air intake pipe 7 is connected to the outside of the matching box 8;

[0033] The main shaft 3 includes a shaft housing 302 fixedly connected to the matching box 8, an airflow groove 301 is arranged inside the shaft housing 302, a connecting hole 303 connected to the inside of the stirring member 1 is arranged on one side of the airflow groove 301, an end of the air inlet pipe 7 extending to the inside of the main shaft 3 is fixedly connected to a material pipeline 304, a plurality of ejection pipes 305 arranged in a straight line are arranged on one side of the material pipeline 304, and one end of the ejection pipe 305 extends to the inside of the connecting hole 303, and the plurality of ejection pipes 305 are adapted to the plurality of stirring members 1;

[0034] The stirring member 1 includes an inner rod 101 fixedly connected to the main shaft 3, and an air flow groove 110 connected to the ejection pipe 305 is arranged inside the inner rod 101. A plurality of first holes 109 connected to the air flow groove 110 are provided on the inner rod 101. A movable sleeve 103 is sleeved on the outer side of the inner rod 101, and a plurality of second holes 102 matched with the first holes 109 are provided on the movable sleeve 103. An elastic component is arranged between the movable sleeve 103 and the inner rod 101, and the greater the distance from the movable sleeve 103 to the inner rod 101, the smaller the overlapping through-hole portion between the second hole 102 and the first hole 109 is.

[0035] Specifically, the elastic component includes a mounting groove 107 opened inside the inner rod 101 at one end away from the main shaft 3, an electromagnet 14 is fixedly connected to one side of the mounting groove 107, a metal plate 16 is adsorbed on one side of the electromagnet 14, a telescopic rod 108 is fixedly connected to one side of the metal plate 16, one end of the telescopic rod 108 is fixedly connected to the inner wall of the movable sleeve 103, a spring 106 is sleeved on the outer side of the telescopic rod 108, and both ends of the spring 106 are respectively connected to the metal plate 16 and the inner wall of the movable sleeve 103, a protrusion 15 for limiting the maximum moving distance of the metal plate 16 is also processed on the inner side of the mounting groove 107, and an arc is set between the bottom end of the second airflow groove 110 and the first hole 109 farthest from the main shaft 3.

[0036] Specifically, the end of the movable sleeve 103 away from the main shaft 3 is fixedly connected with a movable block 104, and the movable block 104 is gradually enlarged from the side of the movable sleeve 103 where the second hole 102 is opened to the side where the second hole 102 is not opened;

[0037] The movable block 104 has an arc surface 105 on one side close to the inner wall of the shell 4 . The arc surface 105 is concentric with the arc of the inner wall of the shell 4 . The arc surface 105 on the movable block 104 overlaps with the inner wall of the shell 4 after the telescopic rod 108 is stretched to its maximum extent.

[0038] Specifically, the stirring member 1 is disposed on the outer interface of the main shaft 3 to form an acute angle 13 with the central axis of the main shaft 3 , and the second hole 102 is disposed at the rear side of the stirring member 1 in the rotation direction.

[0039] Specifically, the sum of the longitudinal movement widths of the moving blocks 104 and the arc surfaces 105 on the plurality of stirring members 1 is exactly the same as the vertical portion of the inner wall of the shell 4 .

[0040] Specifically, an arc-shaped guide groove 12 is provided at the bottom arc portion of the shell 4, and an electric heating layer is provided on the surface of the arc-shaped guide groove 12. A discharge hole 11 is opened at the lowest point of the arc-shaped guide groove 12, and the discharge hole 11 is externally connected to a discharge pipe.

[0041] Specifically, the outer cylindrical side of the matching box 8 is movably connected to the central part through a sealed bearing, and the air intake pipe 7 passes through the outer cylindrical side of the matching box 8 without affecting the rotation of the main shaft 3 driven by the motor 5 or the rotation of the air intake pipe 7.

[0042] Specifically, the number of air intake pipes 7 is set to two, one of which extends into the interior of the matching box 8 and is directly connected to the air flow groove 301, and the other air intake pipe 7 is connected to the material pipeline 304 through a transition box 17. The transition box 17 includes a box body 172 fixedly connected to the ejection pipe 305 and the inner wall of the shaft housing 302. The top of the box body 172 is connected to a cover plate 171 through a bearing, and a cavity connected to the ejection pipe 305 is formed between the cover plate 171 and the box body 172. One end of the air intake pipe 7 is fixedly connected to the cover plate 171 and is connected to the cavity.

[0043] Specifically, an air pump 10 and a material pump 2 are respectively disposed at one end of the two air inlet pipes 7 , and the air inlet pipe 9 of the air pump 10 extends to the interior of the housing 4 .

[0044] Working principle: When using the present invention, the industrial white oil to be processed is directly injected into the shell 4 through the feed pipe provided on the intermediate shell 6, and then the discharge pipe connected to the discharge hole 11 is closed through the valve, and the motor 5 is started to drive the main shaft 3 and the multiple stirring parts 1 outside the main shaft 3 to rotate and stir. The present invention circulates the inert gas in the air at the top of the shell 4 through the air pump 10. Because in the white oil processing process, in order to prevent oxidation and reduce the stirring resistance of high-viscosity white oil, filling inert gas can not only prevent the oxidation of white oil but also reduce the stirring resistance. Then the material to be mixed is placed at the material pump 2, and the material pump 2 and the air inlet pipe 7 on the material pump 2 are used to discharge the material to the ejection pipe 305 until it is ejected to the connecting hole 303, and then the inert gas extracted by the air pump 10 and another air inlet pipe 7 thereon is filled into the air flow groove 1 301 and then sprayed into the stirring part 1 through the connecting hole 303. In the process of spraying, the ejection pipe 305 will be brought in. The discharged materials are sprayed together into the air flow groove 110 inside the inner rod 101, and then sprayed into the white oil through the first hole 109 and the second hole 102 for mixing and stirring. During the stirring process, the material discharge rate is controlled by using the larger distance of the movable sleeve 103 away from the inner rod 101 and the smaller the overlapped through hole portion between the second hole 102 and the first hole 109. Because when the initial viscosity of the white oil is relatively large, the rotation speed of the stirring rod will be reduced by resistance. If the discharge rate at this time is high, the mixing uniformity of the local materials will be reduced, which is not conducive to uniform mixing. At this time, if the viscosity of the white oil is relatively large, the movable sleeve 103 will be pulled outward during the rotation process. The greater the viscosity, the greater the moving distance. The smaller the overlapped through hole portion between the second hole 102 and the first hole 109, the smaller the discharge rate. Therefore, the viscosity of the white oil can be automatically detected to understand the rotation speed and thus accurately add materials. The whole process of adding materials is more scientific and uniform.

[0045] Furthermore, when the viscosity exceeds a certain amount, that is, when the movable sleeve 103 is stretched to the maximum, the movable block 104 and the arc surface 105 can be driven to contact the inner wall of the shell 4, so that the white oil on the inner wall of the shell 4 can be continuously scraped clean when the viscosity is too high, and the continuous scraping can be prevented from solidifying due to insufficient stirring force to pull the white oil on the inner wall of the shell 4 to rotate, thereby achieving the effect of automatically scraping the inner wall of the shell 4 when the viscosity is too high;

[0046] Furthermore, the stirring member 1 as a whole forms an acute angle 13 with the axis of the main shaft 3, which can facilitate the movable sleeve 103 on the rotating stirring member 1 to move outward due to viscosity to achieve the material discharge rate, and then the second hole 102 is placed on the rear side of the rotation direction of the stirring member 1 to further prevent the second hole 102 from being blocked under the premise that the second hole 102 continuously sprays inert gas to prevent the second hole 102 from being blocked, because a certain space is formed in the area where the stirring member 1 is closely attached after the stirring track, and the second hole 102 is opened in this space, which can further reduce the blockage of the second hole 102;

[0047] Furthermore, after the final stirring is completed, the electromagnet 14 can be powered off. At this time, the movable sleeve 103 can be moved outward with the movable block 104 by the rotating centrifugal force of the main shaft 3 until it contacts the inner wall of the shell 4, and then the white oil is scraped from the inside of the shell 4. Then, the sum of the longitudinal movement widths of the movable blocks 104 and the arc surface 105 on the multiple stirring elements 1 is exactly the same as the vertical part of the inner wall of the shell 4. The movable blocks 104 on the spiral multiple stirring elements 1 can be used to continuously scrape the white oil on the inner wall of the shell 4 to the bottom arc guide groove 12, and finally it can be discharged through the discharge hole 11. The electric heating layer on the arc guide groove 12 can also be used for final heating to reduce the viscosity of the residual white oil for cleaning and discharge.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-viscosity industrial white oil production device, comprising a housing (4), a motor (5) disposed on the top of the housing (4), a main shaft (3) disposed inside the housing (4), a plurality of stirring members (1) disposed outside the main shaft (3), an output shaft of the motor (5) being transmission-connected to the main shaft (3), characterized in that: An intermediate housing (6) is arranged on the top of the housing (4), a matching box (8) is arranged between the main shaft (3) and the output shaft of the motor (5), and an air intake pipe (7) is connected to the outside of the matching box (8); The main shaft (3) comprises a shaft housing (302) fixedly connected to the matching box (8), an air flow groove (301) is arranged inside the shaft housing (302), a connecting hole (303) communicating with the inside of the stirring member (1) is arranged on one side of the air flow groove (301), one end of the air inlet pipe (7) extending into the inside of the main shaft (3) is fixedly connected to a material pipeline (304), one side of the material pipeline (304) is provided with a plurality of ejection pipes (305) arranged in a straight line, and one end of the ejection pipes (305) extends into the inside of the connecting hole (303), and the plurality of ejection pipes (305) are adapted to the plurality of stirring members (1); The stirring member (1) comprises an inner rod (101) fixedly connected to the main shaft (3); a second airflow groove (110) connected to the ejection pipe (305) is arranged inside the inner rod (101); a plurality of first holes (109) connected to the second airflow groove (110) are provided on the inner rod (101); a movable sleeve (103) is sleeved on the outer side of the inner rod (101); a plurality of second holes (102) matched with the first holes (109) are provided on the movable sleeve (103); an elastic component is arranged between the movable sleeve (103) and the inner rod (101); and the greater the distance from the movable sleeve (103) to the inner rod (101), the smaller the overlapped through-hole portion between the second hole (102) and the first hole (109) becomes; The elastic component comprises a mounting groove (107) formed inside the inner rod (101) at one end away from the main shaft (3); an electromagnet (14) is fixedly connected to one side of the mounting groove (107); a metal plate (16) is adsorbed on one side of the electromagnet (14); a telescopic rod (108) is fixedly connected to one side of the metal plate (16); one end of the telescopic rod (108) is fixedly connected to the inner wall of the movable sleeve (103); a spring (106) is sleeved on the outer side of the telescopic rod (108); two ends of the spring (106) are respectively connected to the metal plate (16) and the inner wall of the movable sleeve (103); a protrusion (15) for limiting the maximum moving distance of the metal plate (16) is also processed on the inner side of the mounting groove (107); and an arc is formed between the lowest end of the second airflow groove (110) and a first hole (109) farthest from the main shaft (3); A moving block (104) is fixedly connected to one end of the moving sleeve (103) away from the main shaft (3), and the moving block (104) is gradually enlarged from the side of the moving sleeve (103) where the second hole (102) is provided to the side where the second hole (102) is not provided; A curved surface (105) is processed on one side of the moving block (104) close to the inner wall of the shell (4); the curved surface (105) is concentric with the curvature of the inner wall of the shell (4); and the curved surface (105) on the moving block (104) interacts and overlaps with the inner wall of the shell (4) after the telescopic rod (108) is stretched to its maximum extent; The stirring element (1) as a whole forms an acute angle (13) with the axis of the main shaft (3), so that the movable sleeve (103) on the rotating stirring element (1) moves outwards due to viscosity, thereby achieving a material discharge rate.

2. A high viscosity industrial white oil production equipment according to claim 1, characterized in that: The stirring member (1) is arranged on the outer interface of the main shaft (3) to form an acute angle (13) with the central axis of the main shaft (3), and the second hole (102) is arranged on the rear side of the stirring member (1) in the rotation direction.

3. A high viscosity industrial white oil production equipment according to claim 1, characterized in that: The sum of the moving widths of the moving blocks (104) and the arc surfaces (105) on the plurality of stirring members (1) in the longitudinal direction is exactly the same as the vertical portion of the inner wall of the shell (4).

4. A high viscosity industrial white oil production equipment according to claim 1, characterized in that: An arc-shaped guide groove (12) is provided at the bottom arc portion of the shell (4), and an electric heating layer is provided on the surface of the arc-shaped guide groove (12). A discharge hole (11) is provided at the lowest point of the arc-shaped guide groove (12), and the discharge hole (11) is externally connected to a discharge pipe.

5. The high viscosity industrial white oil production equipment according to claim 1, characterized in that: The outer cylindrical side surface of the matching box (8) is movably connected to the central portion via a sealed bearing, and the air intake pipe (7) passes through the outer cylindrical side surface of the matching box (8) without affecting the rotation of the main shaft (3) driven by the motor (5) or driving the rotation of the air intake pipe (7).

6. A high viscosity industrial white oil production equipment according to claim 1, characterized in that: The number of the air intake pipes (7) is set to two, one of which extends into the interior of the matching box (8) and is directly connected to the air flow groove 1 (301), and the other air intake pipe (7) is connected to the material pipeline (304) through the transition box (17).

7. A high viscosity industrial white oil production equipment according to claim 6, characterized in that: The transition box (17) comprises a box body (172) fixedly connected to the ejection pipe (305) and the inner wall of the shaft housing (302); a cover plate (171) is connected to the top of the box body (172) via a bearing, and a cavity connected to the ejection pipe (305) is formed between the cover plate (171) and the box body (172); one end of the air inlet pipe (7) is fixedly connected to the cover plate (171) and is connected to the cavity.

8. The high viscosity industrial white oil production equipment according to claim 1, characterized in that: An air pump (10) and a material pump (2) are respectively provided at one end of the two air inlet pipes (7), and the air inlet pipe of the air pump (10) extends to the interior of the housing (4).

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