Mixed material discharging device for building materials

Abstract

The application relates to the technical field of building material processing equipment, and discloses a mixed discharging device for building materials, which comprises a base, a mixing cylinder is arranged on the top of the base through supporting legs, a mixing mechanism is rotatably arranged in the mixing cylinder, and one end of a transmission shaft of the mixing mechanism extends to the top of the mixing cylinder. The mixed discharging device for building materials mixes powdery building material raw materials through the mixing mechanism in the mixing cylinder, the mixed powdery building materials are transported into a feeding cylinder through the rotation of an auger, the feeding cylinder is quantitatively filled with building materials through the rotation of a quantitative distributing disc below the feeding cylinder, when the distributing cavity filled with building materials rotates to the top of a discharging port, the building materials in the distributing cavity are discharged through the discharging port, the powdery building materials after mixing can be quantitatively discharged, the manual operation frequency of a discharging valve for controlling the discharging amount is reduced, the precision of controlling the discharging amount of the powdery building materials is improved, and the effect that the discharging amount cannot adapt to the use demand of the powdery building materials is avoided.

Description

Technical Field

[0001] This application relates to the field of building material processing equipment technology, specifically a mixing and feeding device for building materials. Background Technology

[0002] Powdered building materials occupy an important position in the construction industry, encompassing a wide range of categories including cement, fly ash, gypsum powder, putty powder, and dry-mix mortar. With the acceleration of urbanization and the continuous advancement of infrastructure construction, the demand for powdered building materials in the construction industry is increasing daily. These materials are not only used in traditional housing construction but also play a crucial role in large-scale projects such as roads, bridges, and tunnels. Simultaneously, with the growing popularity of green building concepts, the market has placed higher demands on the performance and quality of powdered building materials, such as higher strength, better durability, and lower pollution. This has prompted manufacturers to continuously improve their production processes and equipment. During the production of powdered building materials, mixing devices are used to stir and mix them, and the mixed materials are then discharged.

[0003] Currently, when mixing and feeding powdered building materials, it is inconvenient to feed them in quantitative amounts according to usage requirements. Usually, the feeding valve is manually controlled to feed the mixed powdered building materials, making it difficult to control the accuracy of the feeding amount and to accurately feed the materials in quantitative amounts according to usage requirements. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a building material mixing and feeding device that can control the quantitative feeding of mixed powdered building materials without the need for frequent manual operation of the feeding valve to control the feeding amount. This improves the accuracy of controlling the feeding amount of powdered building materials and avoids the problem of the feeding amount not meeting the usage requirements of the powdered building materials. It solves the problem that it is currently inconvenient to quantitatively feed powdered building materials according to usage requirements when mixing and feeding them. Usually, the feeding valve is manually controlled to feed the mixed powdered building materials, making it difficult to control the accuracy of the feeding amount and accurately feed the materials according to the usage requirements.

[0005] To achieve the goal of quantitative feeding of the aforementioned controllable mixed powdered building materials without frequent manual operation of the feeding valve to control the feeding amount, thereby improving the accuracy of controlling the feeding amount of powdered building materials and avoiding the feeding amount being unable to meet the usage requirements of the powdered building materials, this application provides the following technical solution: a building material mixing and feeding device, including a base, a mixing cylinder mounted on the top of the base via support legs, a mixing mechanism rotatably mounted inside the mixing cylinder, one end of the transmission shaft of the mixing mechanism extending above the mixing cylinder, one end of the transmission shaft of the mixing mechanism being mounted on one end of the output shaft of a third motor, the third motor mounting bracket being mounted on the top of the mixing cylinder, and a discharge pipe connected to the bottom outlet of the mixing cylinder via a feeding valve, the discharge pipe being positioned at the conveyor... On one side of the outer surface of the middle section of the feed pipe, the interior of the discharge pipe is connected to the interior of the conveying pipe. An auger is rotatably installed inside the conveying pipe. One end of the conveying pipe is located inside the inner wall of one side of the conveying cylinder. One end of the auger extends from the inside of the conveying pipe into the interior of the conveying cylinder. A quantitative dispensing disc is slidably installed on the bottom outer surface of the conveying cylinder. Multiple dispensing chambers that penetrate vertically are opened in a circular array in the middle of the quantitative dispensing disc. The bottom outer surface of the quantitative dispensing disc is slidably installed on the top of the baffle plate. A discharge port that penetrates vertically is opened on the baffle plate. The bottom of the baffle plate is installed on the top of the base through a support leg. The distance between the top outer surface of the baffle plate and the bottom outer surface of the conveying cylinder is adapted to the thickness of the quantitative dispensing disc.

[0006] The above scheme uses a mixing mechanism inside a mixing drum to mix powdered building materials. The mixed powdered building materials are then transported to a conveying drum by the rotation of an auger. A quantitative dispensing disc rotates below the conveying drum to quantitatively fill the dispensing chamber with building materials. When the dispensing chamber containing building materials rotates above the discharge port, the building materials are discharged through the discharge port. This achieves controlled quantitative dispensing of the mixed powdered building materials, eliminating the need for frequent manual operation of the discharge valve to control the dispensing amount. This improves the accuracy of controlling the dispensing amount of powdered building materials and avoids situations where the dispensing amount cannot meet the usage requirements of the powdered building materials.

[0007] Furthermore, a connecting shaft is provided in the middle of the bottom of the quantitative dispensing plate. The connecting shaft is inserted into the inner wall of the middle part of the drive sleeve. The drive sleeve is located at one end of the output shaft of the second motor, and the second motor is located at the top of the base.

[0008] The above scheme utilizes a second motor to drive the drive sleeve to rotate. Since the connecting shaft is inserted into the drive sleeve, the drive sleeve can drive the connecting shaft to rotate, which in turn drives the quantitative dispensing disc to rotate, allowing the quantitative dispensing disc to adjust the position of multiple dispensing chambers.

[0009] Furthermore, the drive sleeve is U-shaped, and both sides of the drive sleeve have openings that match the size of the connecting shaft. The outer surface of the middle part of the connecting shaft is square, and the size of the outer surface of the middle part of the connecting shaft matches the size of the inner wall of the middle part of the drive sleeve.

[0010] With the above design, the U-shaped drive sleeve and the openings on both sides that are adapted to the size of the connecting shaft facilitate the insertion of the connecting shaft into the drive sleeve through the openings on the side of the U-shaped drive sleeve. The edges allow for detachable installation between the connecting shaft and the drive sleeve. The square shape on the outer surface of the middle part of the connecting shaft is adapted to the size of the inner wall of the middle part of the drive sleeve, so that the connecting shaft and the drive sleeve can fit tightly together and there will be no relative slippage during the transmission process. This ensures the accuracy of power transmission and ensures that the quantitative dispensing disc can rotate precisely according to the drive of the second motor.

[0011] Furthermore, two outwardly expanding and symmetrical guide plates are provided on both sides of the drive sleeve, and the outer surface of one side of the guide plate is slidably connected to the middle outer surface of the connecting shaft.

[0012] The above solution allows the outwardly expanding and symmetrical guide plate to guide the connecting shaft when it is inserted into the drive sleeve, making it easier and more accurate to insert the connecting shaft into the drive sleeve and improving installation efficiency.

[0013] Furthermore, the connecting shaft and the drive sleeve are fixedly connected by fastening bolts.

[0014] Through the above solution, the fastening bolts can firmly fix the connecting shaft and the drive sleeve together, preventing the connecting shaft and the drive sleeve from loosening or separating during equipment operation due to vibration or other factors. This ensures the reliability and stability of power transmission. At the same time, when it is necessary to maintain the equipment or replace parts, simply unscrew the fastening bolts to remove them from the connecting shaft and the drive sleeve, and the connecting shaft can be easily removed from the drive sleeve, facilitating equipment maintenance and repair.

[0015] Furthermore, the discharge port extends radially from the center of the material blocking plate near the conveying cylinder and penetrates to the outside of the material blocking plate away from the conveying cylinder.

[0016] The above solution allows the connecting shaft to slide out along the feed port to the outside of the baffle plate, and the quantitative dispensing plate can be easily pulled out laterally between the feed cylinder and the baffle plate. This avoids the connecting shaft being blocked by the baffle plate when changing to a quantitative dispensing plate with a dispensing cavity of a suitable size according to the feeding requirements.

[0017] Furthermore, two transverse transfer holes are provided on both sides of the quantitative dispensing tray.

[0018] The above solution allows for convenient transfer of the quantitative dispensing tray by inserting the hoisting and transfer tool into the transfer socket. This also facilitates the transfer of the quantitative dispensing tray when it needs to be replaced.

[0019] Furthermore, the end of the auger drive shaft away from the feed cylinder is located at one end of the output shaft of the first motor, and the bottom side of the first motor is fixedly connected to the bottom side of one end of the feed pipe by a fixing bracket.

[0020] The above scheme provides driving force for the rotation of the auger through the first motor. The first motor is firmly fixed to the bottom side of one end of the conveying pipe by the fixing frame, which ensures the stability of the first motor when driving the auger.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects: This building material mixing and feeding device mixes powdered building material raw materials through a mixing mechanism inside a mixing cylinder. The mixed powdered building material is then conveyed to a feeding cylinder by the rotation of an auger. A quantitative feeding disc rotates below the feeding cylinder to quantitatively fill the feeding chamber with building material. When the feeding chamber containing building material rotates to the top of the feeding port, the building material in the feeding chamber is discharged through the feeding port. This achieves controllable quantitative feeding of the mixed powdered building material, eliminating the need for frequent manual operation of the feeding valve to control the feeding amount. This improves the accuracy of controlling the feeding amount of powdered building material and avoids the situation where the feeding amount cannot meet the usage requirements of the powdered building material. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present application; Figure 2 This is a schematic diagram of the front structure of this application; Figure 3 This is a schematic diagram of the structure on the right side of this application; Figure 4 This is a schematic diagram of the front cross-sectional structure of this application; Figure 5 This is a partial exploded view of the structure in this application.

[0023] In the picture: 1. Base; 2. Mixing cylinder; 3. Mixing mechanism; 4. Discharge valve; 5. Discharge pipe; 6. Conveying pipe; 7. Screw; 8. First motor; 9. Conveying cylinder; 10. Quantitative dispensing plate; 11. Dispensing chamber; 12. Connecting shaft; 13. Drive sleeve; 14. Second motor; 15. Material blocking plate; 16. Discharge port; 17. Guide plate; 18. Transfer socket; 19. Fastening bolt; 20. Third motor. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Please see Figure 1 , Figure 2 and Figure 4 The building material mixing and feeding device in this embodiment includes a base 1. A mixing cylinder 2 is mounted on the top of the base 1 via support legs. A mixing mechanism 3 is rotatably mounted inside the mixing cylinder 2. One end of the drive shaft of the mixing mechanism 3 extends above the mixing cylinder 2. One end of the drive shaft of the mixing mechanism 3 is located at one end of the output shaft of a third motor 20. The fixing bracket of the third motor 20 is mounted on the top of the mixing cylinder 2. A discharge pipe 5 is connected to the bottom outlet of the mixing cylinder 2 via a feeding valve 4. The discharge pipe 5 is located on one side of the outer surface of the middle part of the conveying pipe 6. The interior of the discharge pipe 5 communicates with the interior of the conveying pipe 6. An auger 7 is rotatably mounted inside the conveying pipe 6. One end of the feed pipe 6 is located inside the inner wall of the feed cylinder 9. One end of the auger 7 extends from the feed pipe 6 into the interior of the feed cylinder 9. A quantitative dispensing plate 10 is slidably disposed on the bottom outer surface of the feed cylinder 9. Multiple dispensing chambers 11 with vertical penetration are arranged in a ring array in the middle of the quantitative dispensing plate 10. The bottom outer surface of the quantitative dispensing plate 10 is slidably disposed on the top of the baffle plate 15. A discharge port 16 with vertical penetration is opened on the baffle plate 15. The bottom of the baffle plate 15 is disposed on the top of the base 1 through a support leg. The distance between the top outer surface of the baffle plate 15 and the bottom outer surface of the feed cylinder 9 is adapted to the thickness of the quantitative dispensing plate 10.

[0026] Please see Figure 2 , Figure 3 and Figure 4 A connecting shaft 12 is provided in the middle of the bottom of the quantitative dispensing plate 10. The connecting shaft 12 is inserted into the inner wall of the middle part of the drive sleeve 13. The drive sleeve 13 is located at one end of the output shaft of the second motor 14. The second motor 14 is located at the top of the base 1. The second motor 14 drives the drive sleeve 13 to rotate. Since the connecting shaft 12 is inserted into the drive sleeve 13, the drive sleeve 13 can drive the connecting shaft 12 to rotate, so that the connecting shaft 12 drives the quantitative dispensing plate 10 to rotate, and the quantitative dispensing plate 10 adjusts the position of the multiple dispensing chambers 11.

[0027] Please see Figure 2 , Figure 3 and Figure 5The drive sleeve 13 is U-shaped, with openings on both sides that match the size of the connecting shaft 12. The outer surface of the middle part of the connecting shaft 12 is square, and the size of the outer surface of the middle part of the connecting shaft 12 matches the size of the inner wall of the middle part of the drive sleeve 13. The U-shaped drive sleeve 13 and the openings on both sides that match the size of the connecting shaft 12 facilitate the insertion of the connecting shaft 12 into the drive sleeve 13 through the openings on the side of the U-shaped drive sleeve 13. The edges allow for the installation and removal of the connecting shaft 12 and the drive sleeve 13. The square shape of the outer surface of the middle part of the connecting shaft 12 matches the size of the inner wall of the middle part of the drive sleeve 13, ensuring a tight fit between the connecting shaft 12 and the drive sleeve 13. This prevents relative slippage during transmission, ensuring the accuracy of power transmission and ensuring that the quantitative dispensing disc 10 can rotate precisely according to the drive of the second motor 14.

[0028] Please see Figure 2 , Figure 3 and Figure 5 Two outwardly expanding and symmetrical guide plates 17 are provided on both sides of the drive sleeve 13. The outer surface of one side of the guide plate 17 is slidably connected to the middle outer surface of the connecting shaft 12. The outwardly expanding and symmetrical guide plates 17 can guide the connecting shaft 12 when it is inserted into the drive sleeve 13, making it easier and more accurate to insert the connecting shaft 12 into the drive sleeve 13, thus improving the installation efficiency.

[0029] Please see Figure 2 and Figure 5 The connecting shaft 12 and the drive sleeve 13 are fixedly connected by fastening bolts 19. The fastening bolts 19 can firmly fix the connecting shaft 12 and the drive sleeve 13 together, preventing the connecting shaft 12 and the drive sleeve 13 from loosening or separating during equipment operation due to vibration or other factors, thus ensuring the reliability and stability of power transmission. At the same time, when it is necessary to maintain the equipment or replace parts, simply unscrew the fastening bolts 19 to remove them from the connecting shaft 12 and the drive sleeve 13, and the connecting shaft 12 can be easily removed from the drive sleeve 13, which facilitates the maintenance and repair of the equipment.

[0030] Please see Figure 3 , Figure 4 and Figure 5 The discharge port 16 extends radially from the center of the baffle plate 15 near the conveying cylinder 9 and passes through to the outside of the baffle plate 15 away from the conveying cylinder 9, so that the connecting shaft 12 can slide out along the discharge port 16 to the outside of the baffle plate 15, and the quantitative dispensing plate 10 can be easily pulled out laterally between the conveying cylinder 9 and the baffle plate 15, so that the connecting shaft 12 will not be blocked by the baffle plate 15 when the quantitative dispensing plate 10 with a dispensing cavity 11 of appropriate size is replaced according to the material feeding requirements.

[0031] Please see Figure 2 , Figure 3 and Figure 5 The quantitative dispensing tray 10 has two transverse transfer holes 18 on both sides. By inserting the hoisting transfer tool into the transfer hole 18, the quantitative dispensing tray 10 can be easily transferred. In addition, when the quantitative dispensing tray 10 is replaced, it can be easily transferred through the transfer hole 18.

[0032] Please see Figure 2 and Figure 4 The end of the auger 7 drive shaft away from the feed cylinder 9 is located at one end of the output shaft of the first motor 8. The bottom side of the first motor 8 is fixedly connected to the bottom side of one end of the feed pipe 6 through a fixing bracket. The first motor 8 can provide driving force for the rotation of the auger 7. The fixing bracket firmly fixes the first motor 8 to the bottom side of one end of the feed pipe 6, ensuring the stability of the first motor 8 when driving the auger 7.

[0033] The building material mixing and feeding device in this embodiment mixes the powdered building material raw materials through the mixing mechanism 3 in the mixing cylinder 2. The mixed powdered building materials are then transported to the conveying cylinder 9 by the rotation of the auger 7. The quantitative dispensing plate 10 rotates below the conveying cylinder 9 to quantitatively fill the dispensing chamber 11 with building materials. When the dispensing chamber 11 containing building materials rotates to the top of the discharge port 16, the building materials in the dispensing chamber 11 are discharged through the discharge port 16. This achieves the effect of controlling the quantitative feeding of the mixed powdered building materials without the need for frequent manual operation of the discharge valve 4 to control the feeding amount. This improves the accuracy of controlling the feeding amount of powdered building materials and avoids the effect of the feeding amount not meeting the usage requirements of the powdered building materials.

[0034] The working principle of the above embodiment is as follows: The powdered building material raw materials to be mixed are fed into the mixing cylinder 2 through the feed inlet at the top of the mixing cylinder 2. The third motor 20 works, driving the mixing mechanism 3 to stir and mix the raw materials in the mixing cylinder 2. When the mixing is completed and the powdered building material in the mixing cylinder 2 needs to be quantitatively discharged, the discharge valve 4 opens, allowing the powdered building material in the mixing cylinder 2 to enter the discharge pipe 5. Through the discharge pipe 5, the powdered building material enters the conveying pipe 6. The first motor 8 works, driving the auger 7 to rotate, causing the auger 7 to convey the powdered building material entering the conveying pipe 6. Through the auger 7 and the conveying pipe 6, the powdered building material enters the conveying cylinder 9. The second motor 14 operates, driving the connecting shaft 12 to rotate via the drive sleeve 13. This causes the connecting shaft 12 to rotate the quantitative dispensing disc 10, which in turn moves the empty dispensing chamber 11 below the bottom outlet of the conveying cylinder 9. The powdered building materials inside the conveying cylinder 9 enter the dispensing chamber 11 below through the bottom outlet until the dispensing chamber 11 is full. Because the quantitative dispensing disc 10 slides on the bottom outer surface of the conveying cylinder 9, the powdered building materials in the conveying cylinder 9 stop discharging after the dispensing chamber 11 is full. The second motor 14 then operates, driving the quantitative dispensing disc 10 to rotate, adjusting the dispensing volume of the powdered building materials. Due to the rotation of the quantitative dispensing disc 10 on top of the baffle plate 15, the bottom outlet of the dispensing chamber 11 is blocked by the baffle plate 15, causing the dispensing chamber 11 to move the powdered building materials inside to the discharge port 16. The powdered building materials in the dispensing chamber 11 are discharged from the bottom outlet of the dispensing chamber 11 through the discharge port 16, thus achieving quantitative dispensing of the powdered building materials. When it is necessary to adjust the dispensing amount according to the usage requirements, the fastening bolts 19 between the connecting shaft 12 and the drive sleeve 13 are removed, the fixation between the connecting shaft 12 and the drive sleeve 13 is released, and a hoisting and transfer tool is inserted into the transfer socket 18 to lift the quantitative dispensing disc 10 from the conveying cylinder 9. Pull the connecting shaft 12 out from the side opening of the drive sleeve 13 by pulling it out from between the blocking plate 15 and the metering plate 10. The connecting shaft 12 slides out from the outside of the blocking plate 15 along the discharge port 16 as the metering plate 10 moves, thus removing the metering plate 10 from between the blocking plate 15 and the conveying cylinder 9. Slide the metering plate 10, which has a metering cavity 11 with a discharge size that matches the discharge volume, into the space between the conveying cylinder 9 and the blocking plate 15, so that the connecting shaft 12 slides into the discharge port 16. The connecting shaft 12 enters the drive sleeve 13 through the guide plate 17. Use the fastening bolts 19 to fix the drive sleeve 13 and the connecting shaft 12, thus completing the replacement of the metering plate 10.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixing and feeding device for building materials, comprising a base (1), characterized in that: A mixing cylinder (2) is mounted on the top of the base (1) via a support leg. A mixing mechanism (3) is rotatably mounted inside the mixing cylinder (2). One end of the drive shaft of the mixing mechanism (3) extends above the mixing cylinder (2). One end of the drive shaft of the mixing mechanism (3) is located at one end of the output shaft of the third motor (20). The fixing bracket of the third motor (20) is located on the top of the mixing cylinder (2). A discharge pipe (5) is connected to the bottom outlet of the mixing cylinder (2) via a discharge valve (4). The discharge pipe (5) is located on one side of the outer surface of the middle part of the conveying pipe (6). The interior of the discharge pipe (5) is connected to the interior of the conveying pipe (6). An auger (7) is rotatably mounted inside the conveying pipe (6). One end of the conveying pipe (6) Located on one side of the inner wall of the conveying cylinder (9), one end of the auger (7) extends from the conveying pipe (6) into the interior of the conveying cylinder (9). A quantitative dispensing plate (10) is slidably disposed on the bottom outer surface of the conveying cylinder (9). The middle part of the quantitative dispensing plate (10) has multiple vertically penetrating dispensing chambers (11) arranged in a ring array. The bottom outer surface of the quantitative dispensing plate (10) is slidably disposed on the top of the blocking plate (15). The blocking plate (15) has a vertically penetrating discharge port (16). The bottom of the blocking plate (15) is disposed on the top of the base (1) through a support leg. The distance between the top outer surface of the blocking plate (15) and the bottom outer surface of the conveying cylinder (9) is adapted to the thickness of the quantitative dispensing plate (10).

2. The building material mixing and feeding device according to claim 1, characterized in that: A connecting shaft (12) is provided in the middle of the bottom of the quantitative dispensing plate (10). The connecting shaft (12) is inserted into the inner wall of the middle part of the drive sleeve (13). The drive sleeve (13) is located at one end of the output shaft of the second motor (14). The second motor (14) is located at the top of the base (1).

3. The building material mixing and feeding device according to claim 2, characterized in that: The drive sleeve (13) is U-shaped. Both sides of the drive sleeve (13) have openings that are adapted to the size of the connecting shaft (12). The outer surface of the middle part of the connecting shaft (12) is square. The size of the outer surface of the middle part of the connecting shaft (12) is adapted to the size of the inner wall of the middle part of the drive sleeve (13).

4. The building material mixing and feeding device according to claim 3, characterized in that: Two outwardly expanding and symmetrical guide plates (17) are provided on both sides of the drive sleeve (13). The outer surface of one side of the guide plate (17) is slidably connected to the middle outer surface of the connecting shaft (12).

5. The building material mixing and feeding device according to claim 3, characterized in that: The connecting shaft (12) and the drive sleeve (13) are fixedly connected by fastening bolts (19).

6. The building material mixing and feeding device according to claim 1, characterized in that: The discharge port (16) extends radially from the center of the baffle plate (15) near the feed cylinder (9) and penetrates to the outside of the baffle plate (15) away from the feed cylinder (9).

7. The building material mixing and feeding device according to claim 1, characterized in that: The quantitative dispensing tray (10) has two transverse transfer holes (18) on both sides.

8. The building material mixing and feeding device according to claim 1, characterized in that: The end of the auger (7) drive shaft away from the feed cylinder (9) is located at one end of the output shaft of the first motor (8), and the bottom side of the first motor (8) and the bottom side of one end of the feed pipe (6) are fixedly connected by a fixing bracket.

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