Energy-saving and environment-friendly epoxy resin potting material stirring kettle

Abstract

The invention discloses an energy-saving and environment-friendly epoxy resin potting material stirring kettle, and particularly relates to the technical field of stirring kettles, the energy-saving and environment-friendly epoxy resin potting material stirring kettle comprises a base, the base is provided with a material mixing assembly, the material mixing assembly comprises a base plate arranged at the top of the base, the base plate is rotatably connected with a first net cylinder, and the middle part of the first net cylinder is fixedly provided with a stirring conical block. Raw materials permeate into the first net cylinder from the interior of the first net cylinder and flow into the space between the first net cylinder and the second net cylinder, the raw materials are mixed through the first net cylinder and then are filtered, the function of eliminating bubbles generated during material mixing is achieved firstly, the raw materials are shunted through the shunting strips, and the raw materials are uniformly mixed. The raw materials permeate the second mesh cylinder and flow to the position between the second mesh cylinder and the lining cylinder, the raw materials are prevented from being gathered together in a flow dividing mode through the flow dividing strips, the raw materials on the second mesh cylinder are scraped through rotation of the lining cylinder and the second stirring scraping plate, the raw materials are easily collected, and bubbles or defects of finished products after the raw materials are mixed can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of stirring kettles, and more specifically, to an energy-saving and environment-friendly stirring kettle for epoxy resin potting materials. Background Art

[0002] In the production operation of liquid materials, it is often necessary to stir and mix liquid raw materials. A stirring kettle is the most common stirring and mixing device, which is mainly used for mixing fluid materials such as liquids and colloids, and for breaking, dispersing, mixing, and stirring some originally immiscible materials. Epoxy resin has significant advantages in terms of energy conservation and environmental protection. First of all, the epoxy resin material itself has characteristics such as non-toxic, low-smoke, and halogen-free, which make it perform excellently in terms of environmental protection. The performance of the epoxy resin material in terms of energy conservation is mainly reflected in its high efficiency and long life. The epoxy resin composite material has the characteristics of high strength and light weight, can withstand greater mechanical stress, while reducing weight and improving the overall performance of the product.

[0003] Among them, the patent with the publication number CN210545087U discloses a reaction kettle for the production of epoxy resin potting materials, including an outer tank and an inner tank. The inner tank is arranged inside the outer tank and extends to the lower end of the outer tank. Two U-shaped scrapers for scraping off the remaining materials are attached to the inner wall of the inner tank, and the U-shaped scrapers can move along the inner wall of the inner tank. The two U-shaped scrapers are symmetrically and fixedly connected to the left and right ends of a rotating shaft. At least two stirring rods for stirring work are fixedly connected to the left and right ends of the rotating shaft. The upper end of the rotating shaft is fixedly connected to a motor that provides driving force. The motor is fixedly connected to the middle position at the upper end of the outer tank. The upper end of the rotating shaft passes through the inner tank and the outer tank and is connected to the motor. A fan blade for heat dissipation is fixedly connected to the outer side of the rotating shaft ring, and the fan blade is located between the upper end of the inner tank and the inner top of the outer tank. When this structure is in use, the rotating shaft is rotated by using the motor, and then the stirring rods are driven to rotate, realizing the function of stirring the inner tank. The rotation of the rotating shaft will drive the U-shaped scraper to rotate along the inner wall of the inner tank, thereby scraping off the remaining materials on the inner wall of the inner tank and avoiding waste of resources. However, during the stirring and mixing process of epoxy resin, violent stirring is likely to introduce air, and the air is involved in the liquid to form bubbles (similar to the foam generated when beating eggs). Slow stirring, on the other hand, results in low efficiency, slow results, and the resin viscosity is relatively low in the initial stage of mixing, and the bubbles are likely to stay. It is not easy to discharge the bubbles during the stirring process of a single stirring rod, resulting in bubbles or defects in the finished product. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an energy-saving and environment-friendly stirring kettle for epoxy resin potting materials, aiming to solve the problems raised in the above background art.

[0005] The present invention provides the following technical solutions: An energy-saving and environment-friendly stirring kettle for epoxy resin potting materials, including a base, and a mixing component is arranged on the base; The mixing component includes a backing plate arranged on the top of the base. A first mesh cylinder is rotatably connected to the backing plate. A stirring cone block is fixedly arranged in the middle of the first mesh cylinder. A plurality of first stirring scrapers are fixedly arranged on the stirring cone block. A plurality of first through holes are arranged on one side of each of the first stirring scrapers; A second mesh cylinder is arranged on one side of the surface of the first mesh cylinder. A plurality of flow dividing strips are fixedly arranged on the outer side of the second mesh cylinder. A lining cylinder is rotatably connected to the bottom of the second mesh cylinder. An extension cylinder is fixedly arranged at the top end of the lining cylinder. The extension cylinder extends to the middle of the second mesh cylinder and is rotatably connected to the second mesh cylinder. A plurality of second stirring scrapers are fixedly arranged on both the lining cylinder and the extension cylinder. A plurality of second through holes are arranged on one side of the second stirring scraper. A gathering cover is arranged outside the stirring cone block. A kettle body is arranged outside both the gathering cover and the second mesh cylinder. The first through holes penetrate through the stirring cone block, and the second through holes penetrate through the lining cylinder and the extension cylinder; It can be seen that in the above technical solution, after the raw materials are mixed between the gathering cover and the stirring cone block, they flow into the stirring cone block through the first through holes. The first stirring scraper is used to scrape off the raw materials on the inner wall of the gathering cover, reducing waste of raw materials. After the raw materials are mixed by the first mesh cylinder, they are filtered, and the raw materials penetrate through the first mesh cylinder from the inside and flow between the first mesh cylinder and the second mesh cylinder. The raw materials are divided by the flow dividing strips, and the raw materials penetrate through the second mesh cylinder and flow between the second mesh cylinder and the lining cylinder. The lining cylinder and the second stirring scraper rotate to scrape off the raw materials on the second mesh cylinder; The bottom of the stirring cone block is installed with a first connecting column through bolts. The bottom of the central cylinder is installed with a second connecting column through bolts. The bottom ends of the first connecting column and the second connecting column are both installed with connecting rings through bolts. A driven gear is fixedly arranged at the bottom of each connecting ring. A driving gear is arranged between the two driven gears. The driving gear meshes with the driven gears. A motor for driving the driving gear to rotate is installed on the base through bolts. The bottom of each of the two driven gears is rotatably connected to a column. The connecting ring and the driven gear are both located at the bottom of the backing plate, and the column is fixed in the base; It can be seen that in the above technical solution, the driving gear is driven to rotate by the motor. The driving gear drives the connecting ring and the driven gears to rotate, and then the first connecting column and the second connecting column rotate. The stirring cone block is driven to rotate by the first connecting column. Then the stirring cone block, the first stirring scraper, the first mesh cylinder and the first through holes rotate, which is convenient for the first stirring scraper to rotate to scrape off the raw materials adhering to the gathering cover. The second connecting column drives the central cylinder, the guide vanes, the second stirring scraper and the lining cylinder to rotate, which is convenient for scraping off the raw materials adhering to the second mesh cylinder.

[0006] A feed hopper is fixedly arranged at the top of the converging cover. A flow dividing conical block is fixedly arranged at the bottom of the inner wall of the feed hopper. A plurality of flow dividing openings are formed through the flow dividing conical block. The shape of the flow dividing conical block is conical. Both the converging cover and the second mesh cylinder are detachably connected to the kettle body through bolts, and a discharge pipe for discharging materials is arranged on one side of the bottom of the kettle body; It can be seen that in the above technical solution, the raw materials converging in the feed hopper can be divided by the kettle body, avoiding the accumulation of the raw materials between the converging cover and the stirring conical block. Moreover, the kettle body can position the converging cover and the second mesh cylinder, avoiding the rotation of the converging cover and the second mesh cylinder. At the same time, the discharge pipe facilitates the discharge of the raw materials after the subsequent mixing is completed.

[0007] The technical effects and advantages of the present invention: In the present invention, the materials are mixed between the converging cover and the stirring conical block. The stirring conical block and the first stirring scraper rotate to scrape the raw materials on the inner wall of the converging cover, reducing raw material waste. The raw materials penetrate the first mesh cylinder from the inside and flow between the first mesh cylinder and the second mesh cylinder. After being mixed by the first mesh cylinder, the function of eliminating the bubbles generated during the mixing is realized first; In the present invention, the raw materials are divided by the flow dividing strips. The raw materials penetrate the second mesh cylinder and flow between the second mesh cylinder and the inner lining cylinder. The way of dividing the raw materials by the flow dividing strips avoids the gathering of the raw materials. The inner lining cylinder and the second stirring scraper rotate to scrape the raw materials on the second mesh cylinder, which is easy to collect the raw materials; In the present invention, the stirring conical block, the first stirring scraper, the first mesh cylinder and the first through hole rotate, which facilitates the rotation of the first stirring scraper to scrape the raw materials adhering to the converging cover. The second connecting column drives the central cylinder, the guide vanes, the second stirring scraper and the inner lining cylinder to rotate, which facilitates the scraping of the raw materials adhering to the second mesh cylinder. At the same time, the first stirring scraper and the second stirring scraper can respectively perform secondary stirring and mixing on the raw materials between the stirring conical block and the converging cover and between the second mesh cylinder and the inner lining cylinder, improving the stirring and mixing efficiency; In the present invention, the raw materials converging in the feed hopper can be divided by the kettle body, avoiding the accumulation of the raw materials between the converging cover and the stirring conical block. Moreover, the kettle body can position the converging cover and the second mesh cylinder, avoiding the rotation of the converging cover and the second mesh cylinder. At the same time, the discharge pipe facilitates the discharge of the raw materials after the subsequent mixing is completed; In summary, through the corresponding cooperation of each structure, the stirring cone block and the first stirring scraper rotate to scrape the raw materials on the inner wall of the gathering cover, reducing raw material waste. The raw materials penetrate the first mesh cylinder from the inside and flow into the space between the first mesh cylinder and the second mesh cylinder. After being mixed by the first mesh cylinder, the raw materials are filtered, and the function of eliminating the bubbles generated during mixing is realized first. The raw materials are shunted by the shunt bar, penetrate the second mesh cylinder and flow to the space between the second mesh cylinder and the inner lining cylinder. The method of shunting by the shunt bar prevents the raw materials from gathering together. The inner lining cylinder and the second stirring scraper rotate to scrape the raw materials on the second mesh cylinder, which is conducive to collecting the raw materials. At the same time, the raw materials gathered in the feed hopper can be shunted through the kettle body, preventing the raw materials from piling up between the injection port, the gathering cover and the stirring cone block. Description of the Drawings

[0008] In order to more clearly illustrate the technical solutions in the present disclosure, the drawings required for use in some embodiments will be briefly introduced below. Obviously, the drawings in the following description are only the drawings of some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limitations on the actual dimensions of the products, the actual processes of the methods, the actual timings of the signals, etc. involved in the embodiments of the present disclosure.

[0009] Figure 1 It is the front view of the overall structure of the present invention.

[0010] Figure 2 It is a schematic diagram of the mixing component of the present invention.

[0011] Figure 3 It is a schematic diagram of the base, connecting ring and motor of the present invention installed together.

[0012] Figure 4 For the present invention Figure 3 exploded view.

[0013] Figure 5 It is a schematic diagram of the second mesh cylinder, shunt bar, gathering cover, feed hopper and shunt cone block of the present invention.

[0014] Figure 6 For the present invention Figure 5 cross-sectional view.

[0015] Figure 7 It is a schematic diagram of the first mesh cylinder, stirring cone block, inner lining cylinder, first stirring scraper and second stirring scraper of the present invention.

[0016] Figure 8 It is a schematic diagram of the inner lining cylinder, central cylinder, guide vane and second stirring scraper of the present invention.

[0017] The reference numerals are: 1, base; 2, backing plate; 3, first mesh cylinder; 4, stirring cone block; 5, first stirring scraper; 6, first through hole; 7, second mesh cylinder; 8, shunt strip; 9, inner lining cylinder; 10, second stirring scraper; 11, second through hole; 12, central cylinder; 13, guide vane; 14, extension cylinder; 15, first connecting column; 16, second connecting column; 17, connecting ring; 18, driven gear; 19, driving gear; 20, motor; 21, column; 22, converging hood; 23, feed hopper; 24, shunt cone block; 25, shunt port; 26, kettle body; 27, discharge pipe. Detailed implementation manners

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figures 1 - 8 shown in the energy-saving and environment-friendly epoxy resin potting compound stirring kettle, through the mixing component arranged on the base 1, the stirring cone block 4 and the first stirring scraper 5 rotate to scrape the raw materials on the inner wall of the converging hood 22, reducing raw material waste. The raw materials penetrate the first mesh cylinder 3 from the inside and flow into the space between the first mesh cylinder 3 and the second mesh cylinder 7. After being mixed by the first mesh cylinder 3, the raw materials are filtered, and the function of eliminating the bubbles generated during mixing is realized first. The raw materials are shunted by the distance between two adjacent shunt strips 8 to prevent the raw materials from piling up. The raw materials penetrate the second mesh cylinder 7 and flow to the space between the second mesh cylinder 7 and the inner lining cylinder 9. The shunt strip 8 is used to shunt the raw materials to prevent them from gathering together. The inner lining cylinder 9 and the second stirring scraper 10 rotate to scrape the raw materials on the second mesh cylinder 7, which is easy to collect the raw materials. At the same time, the raw materials gathered in the feed hopper 23 can be shunted by the kettle body 26 to prevent the raw materials from piling up between the converging hood 22 and the stirring cone block 4. And the specific structure of the components is as follows; The mixing component includes a backing plate 2 arranged on the top of the base 1. The first mesh cylinder 3 is rotatably connected to the backing plate 2. A stirring cone block 4 is fixedly arranged in the middle of the first mesh cylinder 3. A plurality of first stirring scrapers 5 are fixedly arranged on the stirring cone block 4. A plurality of first through holes 6 are arranged on one side of the plurality of first stirring scrapers 5; On one side of the surface of the first mesh cylinder 3, a second mesh cylinder 7 is provided. A number of flow dividing strips 8 are fixedly arranged on the outer side of the second mesh cylinder 7. The bottom of the second mesh cylinder 7 is rotatably connected to a lining cylinder 9. At the top end of the lining cylinder 9, an extension cylinder 14 is fixedly arranged. The extension cylinder 14 extends to the middle of the second mesh cylinder 7 and is rotatably connected to the second mesh cylinder 7. A number of second stirring scraping plates 10 are fixedly arranged on both the lining cylinder 9 and the extension cylinder 14. On one side of the second stirring scraping plate 10, a number of second through holes 11 are provided. A gathering cover 22 is sleeved outside the stirring cone block 4. The kettle body 26 is sleeved outside both the gathering cover 22 and the second mesh cylinder 7. The first through hole 6 penetrates through the stirring cone block 4, and the second through hole 11 penetrates through the lining cylinder 9 and the extension cylinder 14; During use according to the above structure, after the raw materials are mixed between the gathering cover 22 and the stirring cone block 4, they flow into the stirring cone block 4 through the first through hole 6. The first stirring scraping plate 5 is used to scrape the raw materials on the inner wall of the gathering cover 22 to reduce waste of raw materials. After the raw materials are mixed by the first mesh cylinder 3, they are filtered, and the raw materials penetrate the first mesh cylinder 3 from the inside of the first mesh cylinder 3 and flow between the first mesh cylinder 3 and the second mesh cylinder 7. The raw materials are divided by the flow dividing strips 8 and then penetrate the second mesh cylinder 7 and flow between the second mesh cylinder 7 and the lining cylinder 9. The lining cylinder 9 and the second stirring scraping plate 10 rotate to scrape the raw materials on the second mesh cylinder 7; As Figure 3 、 4 Shown in, 6, a central cylinder 12 is fixedly arranged at the bottom of the lining cylinder 9. A number of guide vanes 13 are fixedly arranged on the outer side of the central cylinder 12, and each guide vane 13 is respectively located at the bottom of the corresponding second stirring scraping plate 10. The bottom of the stirring cone block 4 is installed with a first connecting column 15 through bolts. The bottom of the central cylinder 12 is installed with a second connecting column 16 through bolts. The bottom ends of the first connecting column 15 and the second connecting column 16 are both installed with connecting rings 17 through bolts, and a driven gear 18 is fixedly arranged at the bottom of each connecting ring 17. A driving gear 19 is arranged between the two driven gears 18. The driving gear 19 meshes with the driven gear 18, and a motor 20 for driving the driving gear 19 to rotate is installed on the base 1 through bolts. The bottom of each of the two driven gears 18 is rotatably connected to a column 21. The connecting ring 17 and the driven gear 18 are both located at the bottom of the cushion plate 2, and the column 21 is fixed in the base 1; When used according to the above structure, the driving motor 20 rotates the driving gear 19, which drives the connecting ring 17 and the driven gear 18 to rotate, and then rotates the first connecting column 15 and the second connecting column 16. The rotation of the first connecting column 15 drives the stirring cone block 4 to rotate, and then the stirring cone block 4, the first stirring scraper 5, the first mesh cylinder 3 and the first through hole 6 rotate, facilitating the rotation of the first stirring scraper 5 to scrape off the raw materials adhering to the gathering hood 22. The second connecting column 16 drives the central cylinder 12, the guide vane 13, the second stirring scraper 10 and the inner lining cylinder 9 to rotate, facilitating the scraping off of the raw materials adhering to the second mesh cylinder 7. As Figure 1 , 2 , 5, and 6 show that a feed hopper 23 is fixedly arranged at the top of the gathering hood 22. A flow dividing cone block 24 is fixedly arranged at the bottom of the inner wall of the feed hopper 23. A plurality of flow dividing openings 25 are formed through the flow dividing cone block 24. The shape of the flow dividing cone block 24 is conical. Both the gathering hood 22 and the second mesh cylinder 7 are detachably connected to the kettle body 26 by bolts, and a discharge pipe 27 for discharging materials is arranged on one side of the bottom of the kettle body 26. When used according to the above structure, the raw materials can be divided by the kettle body 26 when gathering in the feed hopper 23, avoiding the accumulation of raw materials between the gathering hood 22 and the stirring cone block 4. The kettle body 26 can position the gathering hood 22 and the second mesh cylinder 7, avoiding the rotation of the gathering hood 22 and the second mesh cylinder 7. At the same time, the discharge pipe 27 facilitates the discharge of the raw materials after mixing. The specific working principle is as follows. During stirring, the raw materials are added to the feed hopper 23 and divided through the flow dividing openings 25. The raw materials are transported through the flow dividing openings 25 between the gathering hood 22 and the stirring cone block 4. The motor 20 is started to drive the driving gear 19 to rotate. The driving gear 19 meshes with the driven gear 18, and then each connecting ring 17, the first connecting column 15 and the second connecting column 16 rotate. When the first connecting column 15 rotates, it drives the stirring cone block 4 to rotate, and the stirring cone block 4 drives the first stirring scraper 5 to rotate, realizing the stirring and mixing of the materials between the stirring cone block 4 and the gathering hood 22. The rotation of the first stirring scraper 5 is used to scrape off the mixed raw materials between the stirring cone block 4 and the gathering hood 22. The raw materials are discharged after being filtered through the first mesh cylinder 3, facilitating the raw materials to flow into the middle of the inner lining cylinder 9 through the second mesh cylinder 7 and the extension cylinder 14 after being filtered. During the process of the raw materials passing through the first mesh cylinder 3, larger bubbles (bubbles with a diameter larger than the pores) are intercepted by the microporous structure of the first mesh cylinder 3 and cannot pass through, so they are isolated upstream. During the interception process, the flow rate can also be reduced, allowing the bubbles more time to float. After being filtered through the first mesh cylinder 3, the raw materials are filtered through the second mesh cylinder 7. By affecting the wettability of the materials and changing the stability of the bubbles, the bubbles are promoted to burst and discharged, effectively avoiding the appearance of bubbles or defects in the finished product. The raw materials on the second mesh cylinder 7 are scraped off by the second stirring scraper 10 and flow into the inner lining cylinder 9 through the second through hole 11. The central cylinder 12 and the guide vanes 13 rotate in the inner lining cylinder 9 to discharge the materials through the discharge pipe 27.

[0020] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An energy-saving and environmentally friendly epoxy resin potting compound stirring kettle, comprising a base (1), characterized in that: A mixing component is provided on the base (1); The mixing component includes a backing plate (2) provided on the top of the base (1). A first mesh cylinder (3) is rotatably connected to the backing plate (2). A stirring cone block (4) is fixedly provided in the middle of the first mesh cylinder (3). A plurality of first stirring scrapers (5) are fixedly provided on the stirring cone block (4). A plurality of first through holes (6) are provided on one side of the plurality of first stirring scrapers (5); On one side of the surface of the first mesh cylinder (3), a second mesh cylinder (7) is provided. A plurality of shunt strips (8) are fixedly provided on the outer side of the second mesh cylinder (7). A lining cylinder (9) is rotatably connected to the bottom of the second mesh cylinder (7). The top of the lining cylinder (9) is fixedly provided with an extension cylinder (14). The extension cylinder (14) extends to the middle of the second mesh cylinder (7) and is rotatably connected to the second mesh cylinder (7). A plurality of second stirring scrapers (10) are fixedly provided on both the lining cylinder (9) and the extension cylinder (14). A plurality of second through holes (11) are provided on one side of the second stirring scrapers (10); A converging cover (22) is provided outside the stirring cone block (4). A kettle body (26) is provided outside both the converging cover (22) and the second mesh cylinder (7).

2. The energy-saving and environmentally friendly epoxy resin potting compound stirring kettle according to claim 1, characterized in that: A central cylinder (12) is fixedly provided at the bottom of the lining cylinder (9). A plurality of guide vanes (13) are fixedly provided on the outer side of the central cylinder (12), and each of the guide vanes (13) is respectively located at the bottom of the corresponding second stirring scraper (10).

3. The energy-saving and environmentally friendly epoxy resin potting compound stirring kettle according to claim 2, characterized in that: The bottom of the stirring cone block (4) is bolted with a first connecting column (15). The bottom of the central cylinder (12) is bolted with a second connecting column (16).

4. The energy-saving and environmentally friendly epoxy resin potting compound stirring kettle according to claim 3, characterized in that: The bottom ends of the first connecting column (15) and the second connecting column (16) are both bolted with a connecting ring (17), and a driven gear (18) is fixedly provided at the bottom of each of the connecting rings (17).

5. The energy-saving and environmentally friendly epoxy resin potting compound stirring kettle according to claim 4, characterized in that: A driving gear (19) is provided between the two driven gears (18). The driving gear (19) meshes with the driven gear (18), and a motor (20) for driving the driving gear (19) to rotate is bolted on the base (1).

6. The energy-saving and environmentally friendly epoxy resin potting compound stirring kettle according to claim 4, characterized in that: The bottom of each of the two driven gears (18) is rotatably connected with a column (21). The connecting ring (17) and the driven gear (18) are both located at the bottom of the backing plate (2), and the column (21) is fixed in the base (1).

7. The energy-saving and environmentally friendly epoxy resin potting compound stirring kettle according to claim 1, characterized in that: The top of the converging cover (22) is fixedly provided with a feed hopper (23). The bottom of the inner wall of the feed hopper (23) is fixedly provided with a shunt cone block (24).

8. The energy-saving and environmentally friendly epoxy resin potting compound stirring kettle according to claim 7, characterized in that: A plurality of shunt openings (25) are penetrated through the shunt cone block (24). The shape of the shunt cone block (24) is set as a cone.

9. The energy-saving and environmentally friendly epoxy resin potting compound stirring kettle according to claim 1, characterized in that: The first through holes (6) penetrate through the stirring cone block (4). The second through holes (11) penetrate through the lining cylinder (9) and the extension cylinder (14).

10. The energy-saving and environmentally friendly epoxy resin potting compound stirring kettle according to claim 1, characterized in that: Both the converging cover (22) and the second mesh cylinder (7) are detachably connected to the kettle body (26) by bolts, and a discharge pipe (27) for discharging materials is provided on one side of the bottom of the kettle body (26).

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