Drum-type drip irrigation machine

Abstract

This invention discloses a roller-type drip casting machine, comprising a frame, a belt conveyor mechanism mounted thereon, and a casting mechanism and a cooling tunnel arranged sequentially along the belt conveyor direction. It also includes a feeding device for feeding material to the casting mechanism. The key feature is that the casting mechanism is a roller-type drip casting mechanism, comprising a support frame and a drip casting roller horizontally mounted thereon. The latter includes a feeding pipe fixed to the support frame and a drip casting pipe sleeved on its outer side. The drip casting pipe is rotatably mounted on the support frame and driven by a drip casting pipe rotation drive device to rotate relative to the feeding pipe. Drip casting holes are arrayed on the pipe wall. The feeding pipe has two ends for feeding and discharging material, respectively, which are connected to the feeding device via pipes. A discharge chamber is provided at the bottom of the feeding pipe wall, connecting the feeding pipe and the drip casting holes passing through the lower end of the discharge chamber as the drip casting pipe rotates. This invention enables efficient production of small round chocolate raw materials, improving production efficiency and saving enterprise production costs.

Description

Technical Field

[0001] This invention relates to a drum-type drip irrigation machine. Background Technology

[0002] Currently, chocolate raw material manufacturers typically process chocolate concentrate into block-shaped raw materials that are easy to weigh and transport, so that they can be sold to chocolate food manufacturers. After obtaining these block-shaped raw materials, chocolate food manufacturers only need to heat and melt them during actual production, and then use them for subsequent food pouring and molding processes to make various chocolate foods.

[0003] Previously, the production of the aforementioned chocolate block raw materials mostly involved cooling the chocolate slurry in a cooling tank before crushing it. However, the resulting chocolate block raw materials were irregular in shape and large in size, which was not only unfavorable for stacking, storage, and transportation, but also time-consuming to heat and melt. Therefore, existing technologies have designed improved and relatively refined chocolate block raw material production equipment. For example, document No. 109770027A discloses a chocolate slab pouring machine, which is a chocolate block raw material production equipment previously designed by the applicant. It uses a plunger pressurized pouring mechanism to continuously pour the heat-preserved chocolate slurry onto a moving belt conveyor below, and then forms a long solid material belt through a cooling tunnel. Then, the solid material belt is cut into neatly sized chocolate slab raw materials by a cutting mechanism at the rear.

[0004] However, according to customer feedback, the aforementioned chocolate flake ingredients still exhibit the following problems in practical applications:

[0005] 1. The volume remains relatively large, and the long, sheet-like structure makes it difficult to fully utilize the packaging bag's volume, thus hindering packaging and transportation. Furthermore, the long, sheet-like structure is prone to breakage, affecting the product's appearance and causing measurement difficulties.

[0006] 2. The melting speed of chocolate flakes is still relatively slow, which affects the improvement of production efficiency.

[0007] Therefore, the chocolate food manufacturing industry needs a smaller, more easily packaged and transported, and more easily melted chocolate block-shaped raw material. Experiments have shown that shaping the chocolate raw material into small round cakes with a diameter of 10-40mm greatly facilitates packaging and transportation, and also achieves high melting efficiency. To obtain these small round chocolate raw materials, the industry currently mainly uses a plunger-pressurized casting mechanism combined with a rolling belt for casting production, such as using existing chocolate casting machines. However, this type of equipment has revealed the following problems in production:

[0008] In reality, very little slurry is needed for drip casting to form individual small discs. However, because existing plunger-pressurized casting mechanisms are continuous casting mechanisms, it is difficult to control the slurry flowing from each casting head. Therefore, during the pressurization stroke of the plunger, the casting head often cannot quickly cut off the excess slurry, which results in slurry being poured excessively onto the belt and leaving slurry trails on its surface as the belt moves, thus ruining the shape of the small discs.

[0009] To address this issue, the current industry practice is to design the belt conveyor to operate intermittently, which, in conjunction with the casting mechanism above, intermittently casts rows of small, round chocolate biscuits. However, the drawback is also obvious: the production efficiency is too low. When the output is large, in order to improve efficiency, many manufacturers often need to use multiple machines to operate simultaneously, which greatly increases the production cost for enterprises.

[0010] Therefore, the industry urgently needs a drip casting equipment that can produce the above-mentioned small round chocolate raw materials very efficiently. Summary of the Invention

[0011] The purpose of this invention is to provide a roller-type drip casting machine that can efficiently produce small round chocolate raw materials.

[0012] The technical solution of the present invention is as follows: a roller-type drip casting machine, comprising a frame, a belt conveyor mechanism mounted on the frame, and a casting mechanism and a cooling tunnel arranged sequentially along the belt conveying direction of the belt conveyor mechanism, wherein the casting mechanism is located above the belt, and the belt passes through the cooling tunnel, and further comprising a feeding device for feeding material to the casting mechanism; characterized in that the casting mechanism is a roller-type drip casting mechanism, comprising a support frame and a drip casting roller horizontally mounted on the support frame, the drip casting roller comprising a feeding pipe fixed on the support frame and a drip casting pipe sleeved outside the feeding pipe, the drip casting pipe being rotatably mounted on the support frame and driven by a drip casting pipe rotation drive device to rotate relative to the feeding pipe, the drip casting pipe having an array of drip casting holes distributed on its wall; the two ends of the feeding pipe being used for feeding and discharging material respectively, and they being connected to the feeding device through pipes; a discharge cavity is opened at the bottom of the feeding pipe wall, which is used to connect the feeding pipe and the drip casting holes passing through the lower end of the discharge cavity as the drip casting pipe rotates.

[0013] In this invention, the drip holes on the surface of the dripping pipe are arranged in an array, meaning they are evenly spaced along the axial and circumferential directions of the dripping pipe. However, in actual design, the number and spacing of the drip holes in the axial and circumferential directions are limited by the width of the belt below and the circumference of the dripping pipe itself. For example, in one dripping pipe design, we have twenty sets of drip holes along the axial direction, and each set consists of eighteen drip holes evenly spaced on the outer circumference of the dripping pipe, with adjacent sets of drip holes staggered circumferentially.

[0014] Furthermore, the feeding pipe described in this invention is a double-layered pipe, comprising an outer pipe and an inner pipe arranged concentrically. The dripping pipe is fitted onto the outer pipe, and both ends of the inner pipe are connected to the feeding device via pipes. An insulation layer is provided between the inner and outer pipes. A discharge insert is fixed between the bottom of the inner pipe and the outer pipe, and this discharge insert has a discharge cavity. This discharge cavity connects the inner pipe to the dripping hole at the lower end of the discharge cavity, which is formed as the dripping pipe rotates. The introduction of the double-layered pipe and the insulation layer provides excellent heat insulation for the chocolate syrup in the inner pipe, preventing rapid heat loss and solidification that would hinder its dripping.

[0015] Furthermore, in this invention, the outer tube has caps fixed or integrally formed at both ends to seal the internal insulation layer, while both ends of the inner tube extend out from openings provided on the corresponding caps.

[0016] Furthermore, the support frame described in this invention is provided with a positioning recess for inserting the feeding pipe and a U-shaped clamp that is fixed to the positioning recess by bolts to press the feeding pipe.

[0017] Furthermore, the support frame described in this invention is also fixed with a scraper for scraping the slurry adhering to the surface of the drip pipe. The scraper is located on the side of the drip pipe opposite to the conveying direction of the belt, and a receiving hopper for receiving the slurry scraped off by the scraper is fixed at the lower part of the frame.

[0018] More specifically, the scraper structure described above in this invention is specially optimized, featuring a blade parallel to the drip pipe. The front of the blade has a groove facing the outer circumference of the drip pipe. Along the rotation direction of the drip pipe, a top and bottom cutting edge are sequentially arranged on this groove, both abutting against the outer circumference of the drip pipe. The bottom cutting edge is tightly fitted to the outer circumference of the drip pipe via a sealing strip. The lower part of the groove connects to a discharge port extending downwards through the blade, which is opposite to the slurry receiving hopper below. This scraper structure design ensures effective removal of slurry residue from the drip hole surface, preventing it from dripping and contaminating the conveyor belt surface or mixing with slurry dripped into subsequent drip holes, thus avoiding uneven quality of the small round cakes. Simultaneously, the slurry scraped off by the scraper falls into the receiving hopper and can be reused, preventing waste.

[0019] Furthermore, the feeding device of the present invention includes a material cylinder with a stirring mechanism and a heating device and a conveying pump. The lower side of the material cylinder is provided with a discharge port, which is connected to one end of the feeding pipe via a discharge pipe. The conveying pump is installed on the discharge pipe. The top of the material cylinder is provided with a first return port, which is connected to the other end of the feeding pipe via a first return pipe. The discharge pipe is provided with a first pressure control valve and a pressure display instrument located downstream of the first pressure control valve. The first return pipe is provided with a second pressure control valve.

[0020] Furthermore, the top of the material cylinder in this invention is provided with a second return port, which is connected to the discharge pipe via a second return pipe. The connection position between the second return pipe and the discharge pipe is located upstream of the first pressure control valve. A third pressure control valve is provided on the second return pipe, and a magnetic filter is provided on the discharge pipe.

[0021] By manipulating the opening of the first, second, and third pressure control valves, workers can adjust the pressure of the chocolate syrup entering the feed pipe to ensure smoother syrup flow from the drip hole during dripping.

[0022] Furthermore, the rotary drive device of the present invention includes a main drive wheel driven by a motor reducer and a driven drive wheel connected to the main drive wheel; wherein the driven drive wheel is sleeved on the outside of the feeding pipe through a driven drive wheel bearing, and flanges are formed on the outer periphery of both ends of the dripping pipe, wherein the flange at one end is fixed to the driven drive wheel, and the flange at the other end is fixed to a support wheel, the inner side of the support wheel is sleeved on the outside of the feeding pipe through an inner support wheel bearing, and the outer periphery of the support wheel is mounted on the inner side of a rotating seat through an outer support wheel bearing, the rotating seat being fixed on a support frame.

[0023] Furthermore, in this invention, both the main drive wheel and the driven wheel are synchronous belt pulleys, connected by belt drive; or both the main drive wheel and the driven wheel are synchronous sprockets, connected by chain drive; or both the main drive wheel and the driven wheel are synchronous gears, meshing and connected by transmission.

[0024] The working principle of this invention is as follows:

[0025] The chocolate puree is heated in a feed tank and stirred by an internal stirring mechanism.

[0026] The chocolate puree is then continuously fed into the feeding pipe through pipes connected to both ends of the feeding cylinder and the feeding pipe, and circulates within the feeding pipe and the feeding cylinder. Due to the pressure inside the feeding pipe, the puree is forced into the discharge chamber within the discharge insert.

[0027] After the belt conveyor mechanism starts, the belt continuously transports material forward. At this time, the upper dripping pipe rotates. When the dripping holes in the same row along the dripping pipe pass the lower end of the discharge chamber of the discharge insert, the slurry is squeezed out of the dripping holes under pressure and drips in rows onto the belt. Because the dripping pipe rotates continuously around the feed pipe, once the dripping hole is misaligned with the lower end of the discharge chamber after the slurry is squeezed out, the remaining slurry will be quickly cut off, preventing any excess from dripping onto the belt.

[0028] As the drip pipe rotates continuously, the slurry is dripped in rows onto the belt, and after being cooled in the cooling tunnel, it forms the desired small round chocolate raw material.

[0029] The advantages of this invention are:

[0030] 1. This invention employs a roller-type drip casting mechanism to replace the traditional plunger-pressurized casting mechanism. This drip casting mechanism offers two advantages during drip casting: First, it completes the drip casting action by aligning and misaligning the dripping orifice, which rotates with the dripping pipe, with the pressurized discharge chamber. Therefore, with the continuous rotation of the dripping orifice, once the slurry is squeezed out, the remaining slurry is quickly cut off, preventing excess slurry from dripping onto the belt and thus avoiding slurry trails that could damage the product shape. Second, due to these advantages, the belt does not need to operate intermittently during production; instead, it can maintain continuous movement, enabling the mass production of small, round chocolate raw materials. Therefore, its production efficiency is far higher than existing equipment.

[0031] 2. The dripping roller design in this invention is such that the external dripping pipe and the internal feeding pipe are completely separable, which makes it easy to replace the external dripping pipe. For example, the dripping pipes with different array arrangements and dripping hole specifications can be replaced according to customer requirements without re-drilling holes, which greatly saves production costs.

[0032] 3. In this invention, the feeding pipe adopts a double-layer sleeve design. The heat insulation layer can provide good heat insulation for the chocolate paste in the inner tube, preventing it from losing heat quickly and becoming solidified, thus preventing it from dripping smoothly.

[0033] 4. The scraper structure in this invention is specially designed to effectively remove residual slurry from the surface of the drip hole, preventing this slurry from dripping onto the conveyor belt surface and contaminating it, or mixing with the slurry dripped into the subsequent drip hole, thus causing uneven quality of the small round cakes. Simultaneously, the slurry scraped off by the scraper falls into the slurry receiving hopper and can be reused, avoiding waste.

[0034] 5. In this invention, by manipulating the opening of the first pressure control valve, the second pressure control valve and the third pressure control valve, the worker can adjust the pressure of the chocolate syrup entering the feeding pipe to ensure that the syrup flows more smoothly from the drip hole during dripping.

[0035] 6. The dripping roller in this invention has good stability in its transmission and positioning design, which can ensure that the dripping roller works more stably and operates more reliably. Attached Figure Description

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0037] Figure 1 This is a main structural view of the present invention (the belt conveyor mechanism at the rear of the cooling tunnel is omitted).

[0038] Figure 2 for Figure 1 Top view;

[0039] Figure 3 This is a cross-sectional view of the dripping roller in this invention;

[0040] Figure 4 This is a separate view of the material cylinder in this invention;

[0041] Figure 5 This is a cross-sectional view of the scraper and dripping roller assembled in this invention.

[0042] The components include: 1. Frame; 2. Belt conveyor mechanism; 201. Belt; 3. Cooling tunnel; 4. Support frame; 5. Drip roller; 6. Feed pipe; 601. Outer pipe; 601a. ​​Cover; 602. Inner pipe; 603. Insulation layer; 604. Discharge insert; 7. Drip pipe; 701. Drip hole; 702. Flange; 8. Discharge chamber; 9. Positioning recess; 10. U-shaped clamp; 11. Scraper; 1101. Scraper groove; 1102. Top cutting edge; 1103. Bottom cutting edge; 1104. Drop outlet; 12. Sealing strip; 13. Material cylinder; 1 301. Discharge port; 1302. First return port; 1303. Second return port; 14. Stirring mechanism; 15. Conveying pump; 16. Discharge pipe; 17. First return pipe; 18. First pressure control valve; 19. Pressure display instrument; 20. Second pressure control valve; 21. Second return pipe; 22. Third pressure control valve; 23. Motor reducer unit; 24. Main drive wheel; 25. Driven drive wheel; 26. Driven drive wheel bearing; 27. Support wheel; 28. Inner bearing of support wheel; 29. ​​Outer bearing of support wheel; 30. Rotating seat; 31. Magnetic filter. Detailed Implementation

[0043] Example: The following is combined with Figures 1-5 As shown, the specific implementation method of the drum-type drip irrigation machine provided by the present invention will be described in detail below:

[0044] This invention is mainly used in the production of small round, disc-shaped chocolate raw materials with a diameter of 10-40mm, as mentioned in the background art.

[0045] Firstly, as Figure 1 and Figure 2 As shown, this roller-type drip casting machine of the present invention is composed of a frame 1, a belt conveyor mechanism 2 mounted on the frame 1, a casting mechanism and a cooling tunnel 3 arranged sequentially along the conveying direction of the belt 201 of the belt conveyor mechanism 2, and a feeding device for feeding material to the casting mechanism. The casting mechanism is located above the belt 201, and the belt 201 passes through the cooling tunnel 3. Of course, the belt conveyor mechanism 2 and the cooling tunnel 3 are existing technologies and will not be described in detail in this invention.

[0046] The core improvement of this invention lies in the pouring mechanism, which employs a specially designed roller-type drip pouring mechanism. Specifically, we will combine... Figure 1 and Figure 2 As can be seen, this roller-type dripping mechanism has a support frame 4 and a dripping roller 5 placed horizontally on the support frame 4. The dripping roller 5 includes a feeding pipe 6 fixed on the support frame 4 and a dripping pipe 7 sleeved on the outside of the feeding pipe 6. The dripping pipe 7 is rotatably mounted on the support frame 4 and is driven by a dripping pipe rotation drive device to rotate relative to the feeding pipe 6.

[0047] Combination Figure 2 As shown, the rotary drive device includes a main drive wheel 24 driven by a motor reducer 23 and a driven drive wheel 25 connected to the main drive wheel 24. The driven drive wheel 25 is sleeved on the outside of the feeding pipe 6 through a driven drive wheel bearing 26. Both ends of the dripping pipe 7 are formed with flanges 702. One flange 702 is fixed to the driven drive wheel 25, while the other flange 702 is fixed to a support wheel 27. The inner side of the support wheel 27 is sleeved on the outside of the feeding pipe 6 through an inner support wheel bearing 28, while the outer side of the support wheel 27 is mounted on the inner side of a rotating seat 30 through an outer support wheel bearing 29. The rotating seat 30 is fixed on the support frame 4.

[0048] In this embodiment, both the main drive wheel 24 and the driven drive wheel 25 are synchronous belt pulleys, and they are connected by belt drive.

[0049] We further combined Figure 3 As shown, in this embodiment, the dripping pipe 7 has an array of dripping holes 701 distributed on its wall. The feeding pipe 6 is a double-layered pipe, including an outer pipe 601 and an inner pipe 602 arranged concentrically. The dripping pipe 7 is sleeved on the outer pipe 601. The two ends of the inner pipe 602 are used for feeding and discharging, respectively, and they are connected to the feeding device through pipes. An insulation layer 603 is provided between the inner pipe 602 and the outer pipe 601. A discharge insert 604 is fixed between the bottom of the inner pipe 602 and the outer pipe 601. The discharge insert 604 is provided with the discharge cavity 8, which is used to connect the inner pipe 602 and the dripping hole 701 at the lower end of the discharge cavity 8 as the dripping pipe 7 rotates.

[0050] In this embodiment, twenty groups of drip holes 701 are provided along the axial direction of the drip pipe 7, and each group consists of eighteen drip holes 701 evenly spaced on the outer periphery of the drip pipe 7, and the drip holes 701 of adjacent groups are staggered in the circumferential direction.

[0051] In this embodiment, the outer tube 601 has caps 601a integrally formed at both ends to seal the internal insulation interlayer 603, while both ends of the inner tube 602 extend out from the openings provided on the corresponding caps 601a.

[0052] Combined Figure 2 As shown, the support frame 4 is provided with a positioning recess 9 for inserting the feeding pipe 6 and a U-shaped clamp 10 that is fixed to the positioning recess 9 by bolts to press the feeding pipe 6.

[0053] Let's combine... Figure 1 , Figure 2 and Figure 4 As shown, the feeding device in this embodiment uses a known material cylinder 13 with a stirring mechanism 14 and a heating device, as well as a delivery pump 15. The stirring mechanism consists of a stirring shaft placed longitudinally inside the material cylinder 13 and stirring blades fixed thereon, and the top of the stirring shaft is driven by a motor reducer unit located at the top of the material cylinder 13.

[0054] Combination Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the lower side of the material cylinder 13 is provided with a discharge port 1301, which is connected to one end of the feeding pipe 6 via a discharge pipe 16. The conveying pump 15 is installed on the discharge pipe 16. The top of the material cylinder 13 is provided with a first return port 1302, which is connected to the other end of the feeding pipe 6 via a first return pipe 17. The discharge pipe 16 is provided with a first pressure control valve 18 and a pressure display instrument 19 located downstream of the first pressure control valve 18. The first return pipe 17 is provided with a second pressure control valve 20. The top of the material cylinder 13 is also provided with a second return port 1303, which is connected to the discharge pipe 16 via a second return pipe 21. The connection position of the second return pipe 21 and the discharge pipe 16 is located upstream of the first pressure control valve 18. The second return pipe 21 is provided with a third pressure control valve 22. Furthermore, in this embodiment, a magnetic filter 31 is also provided on the discharge pipe 16 between the delivery pump 15 and the first pressure control valve 18.

[0055] By manipulating the opening of the first pressure control valve 18, the second pressure control valve 20, and the third pressure control valve 22, the worker can adjust the pressure of the chocolate syrup entering the feed pipe 6 to ensure that the syrup flows more smoothly from the drip hole 701 during dripping.

[0056] Let's combine... Figure 2 and Figure 5 As shown, in this embodiment, a scraper 11 for scraping the slurry adhering to the surface of the dripping pipe 7 is also fixed on the support frame 4. The scraper 11 is set on the side of the dripping pipe 7 opposite to the conveying direction of the belt 201, and a receiving hopper (omitted in the figure) for receiving the slurry scraped off by the scraper 11 is fixed at the lower part of the frame 1.

[0057] In this embodiment, the scraper 11 has a blade parallel to the drip pipe 7. A support rod is mounted on the support frame 4 at the rear of the blade. Multiple connecting rods with flanged heads are bolted to the rear of the blade, allowing the scraper to be disassembled and replaced. We will specifically combine... Figure 5 As shown, the front part of the blade is provided with a groove 1101 facing the outer circumference of the dripping pipe 7. The groove 1101 is provided with a top blade 1102 and a bottom blade 1103 in sequence along the rotation direction of the dripping pipe 7. Both of them abut against the outer circumference of the dripping pipe 7, and the bottom blade 1103 is tightly attached to the outer circumference of the dripping pipe 7 through the sealing strip 12. The lower part of the groove 1101 is connected to the discharge port 1104 provided through the blade, which is downward and opposite to the slurry receiving hopper below.

[0058] The aforementioned scraper structure design ensures that residual slurry on the surface of the drip hole 701 is effectively removed, preventing this slurry from dripping and contaminating the surface of the belt 201, or mixing with the slurry dripped into the subsequent drip hole 701, thus avoiding uneven quality of the small round cakes. Simultaneously, the slurry scraped off by the scraper 11 falls into the slurry receiving hopper and can be reused, avoiding waste.

[0059] The working principle of this invention is as follows:

[0060] The chocolate puree is heated by the feed cylinder 13 in the feeding device and stirred by the internal stirring mechanism.

[0061] Subsequently, the chocolate syrup is continuously transported into the feeding pipe 6 (inner pipe 602) through the pipes connecting the two ends of the feeding cylinder 13 and the feeding pipe 6, and circulates within the feeding pipe 6 and the feeding cylinder 13. Due to the pressure within the feeding pipe 6, the syrup is forced into the discharge chamber 8 within the discharge insert 604. Because the feeding pipe 6 is a double-layered pipe, its internal insulation layer 603 provides excellent heat insulation for the chocolate syrup in the inner pipe 602, preventing it from rapidly losing heat and solidifying, thus hindering its smooth dripping.

[0062] After the belt conveyor mechanism 2 is started, the belt 201 continuously transports material forward. At this time, the dripping pipe 7 above rotates. When the dripping pipe 7 moves upward along the same row of dripping holes 701 and passes the lower end of the discharge chamber 8 of the discharge insert 604, the slurry is squeezed out of the dripping holes 701 under pressure and drips onto the belt 201 in a row. Since the dripping pipe 7 rotates continuously around the feeding pipe 6, once the dripping holes 701 are misaligned with the lower end of the discharge chamber 8 after the slurry is squeezed out of the dripping holes 701, the slurry in the rear will be quickly cut off, and no excess slurry will drip onto the belt 201.

[0063] As the drip pipe 7 rotates continuously, the slurry is dripped in rows onto the belt 201, and after being cooled by the cooling tunnel 3, it forms the desired small round chocolate raw material.

[0064] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All modifications made according to the spirit and essence of the main technical solution of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A drum-type drop-casting machine, comprising a frame (1), a belt conveying mechanism (2) arranged on the frame (1), and a casting mechanism and a cooling tunnel (3) arranged in sequence along the conveying direction of a belt (201) of the belt conveying mechanism (2), wherein the casting mechanism is located above the belt (201), and the belt (201) passes through the cooling tunnel (3), further comprising a feeding device for feeding the casting mechanism; characterized in that The casting mechanism is a drum type drop casting mechanism, which comprises a support frame (4) and a drop casting drum (5) horizontally arranged on the support frame (4). The drop casting drum (5) comprises a feeding pipe (6) fixed on the support frame (4) and a drop casting pipe (7) sleeved on the outside of the feeding pipe (6). The drop casting pipe (7) is rotatably arranged on the support frame (4) and is driven by a drop casting pipe rotation driving device to rotate relative to the feeding pipe (6). The pipe wall of the drop casting pipe (7) is arranged with drop casting holes (701). The two ends of the feeding pipe (6) are respectively used for feeding and discharging, and they are connected with the feeding device through pipes. The bottom of the pipe wall of the feeding pipe (6) is provided with a discharging cavity (8) for connecting the feeding pipe (6) and the drop casting hole (701) passing through the lower end of the discharging cavity (8) with the rotation of the drop casting pipe (7). The feeding pipe (6) is a double-layer sleeve pipe, which comprises an outer pipe (601) and an inner pipe (602) arranged concentrically. The drop casting pipe (7) is sleeved on the outer pipe (601), and the two ends of the inner pipe (602) are connected with the feeding device through pipes. A heat preservation interlayer (603) is arranged between the inner pipe (602) and the outer pipe (601). A discharging insert (604) is fixed between the bottom of the inner pipe (602) and the outer pipe (601). The discharging insert (604) is provided with the discharging cavity (8) for connecting the inner pipe (602) and the drop casting hole (701) passing through the lower end of the discharging cavity (8) with the rotation of the drop casting pipe (7). A scraper (11) for scraping the paste adhered to the surface of the drop casting pipe (7) is further fixed on the support frame (4). The scraper (11) is arranged on the side opposite to the reverse belt (201) conveying direction of the drop casting pipe (7), and a material receiving hopper is fixed on the lower part of the rack (1) for receiving the paste scraped by the scraper (11).

2. The drum-type gulliver according to claim 1, characterized in that The two ends of the outer pipe (601) are fixed or integrally formed with a cover (601a) for closing the heat preservation interlayer (603) in the interior. The two ends of the inner pipe (602) extend out of the openings provided on the corresponding covers (601a).

3. The drum-type gulliver according to claim 1, characterized in that The support frame (4) is provided with a positioning recess (9) for clamping the feeding pipe (6) and a U-shaped clamp (10) fixed on the positioning recess (9) through screw cooperation to press the feeding pipe (6).

4. The drum-type gulliver according to claim 1, characterized in that The scraper (11) has a blade body arranged parallel to the drop casting pipe (7). The front part of the blade body is provided with a blade groove (1101) facing the outer peripheral surface of the drop casting pipe (7). The blade groove (1101) is sequentially provided with a top blade edge (1102) and a bottom blade edge (1103) along the rotation direction of the drop casting pipe (7). The top blade edge (1102) and the bottom blade edge (1103) are both in abutment with the outer periphery of the drop casting pipe (7), and the bottom blade edge (1103) is tightly attached to the outer peripheral surface of the drop casting pipe (7) through a sealing strip (12). The lower part of the blade groove (1101) is connected with a material falling port (1104) arranged through the blade body downward. The material falling port (1104) is opposite to the paste receiving hopper below.

5. The rotary drop dispenser of claim 1 wherein The feeding device comprises a material cylinder (13) with stirring mechanism (14) and heating device and a delivery pump (15), the lower side of the material cylinder (13) is provided with a discharge port (1301), the discharge port (1301) is connected with one end of the feeding pipe (6) through a discharge pipe (16), the delivery pump (15) is arranged on the discharge pipe (16), the top of the material cylinder (13) is provided with a first return port (1302), the first return port (1302) is connected with the other end of the feeding pipe (6) through a first return pipe (17), the discharge pipe (16) is provided with a first pressure control valve (18) and a pressure display instrument (19) located at the downstream position of the first pressure control valve (18), and the first return pipe (17) is provided with a second pressure control valve (20).

6. The drum-type gulliver according to claim 5, characterized in that The top of the material cylinder (13) is further provided with a second return port (1303), the second return port (1303) is connected with the discharge pipe (16) through a second return pipe (21), and the connection position of the second return pipe (21) and the discharge pipe (16) is located at the upstream position of the first pressure control valve (18), the second return pipe (21) is provided with a third pressure control valve (22); and the discharge pipe (16) is provided with a magnetic filter (31).

7. The drum-type gulliver according to claim 1, characterized in that The rotary drive device comprises a main transmission wheel (24) driven by a motor reducer set (23) and a slave transmission wheel (25) in transmission connection with the main transmission wheel (24); wherein the slave transmission wheel (25) is sleeved on the outside of the feeding pipe (6) through a slave transmission wheel bearing (26), the outer periphery of both ends of the drip pipe (7) is formed with a flange plate (702), one end of the flange plate (702) is fixed with the slave transmission wheel (25), and the other end of the flange plate (702) is fixed with a support wheel (27), the inside of the support wheel (27) is sleeved on the outside of the feeding pipe (6) through a support wheel inner bearing (28), and the periphery of the support wheel (27) is installed on the inside of a rotating seat (30) through a support wheel outer bearing (29), and the rotating seat (30) is fixed on the support frame (4).

8. The drum-type gulliver according to claim 7, characterized in that The main transmission wheel (24) and the slave transmission wheel (25) are synchronous pulleys, and are in transmission connection through a belt; or the main transmission wheel (24) and the slave transmission wheel (25) are synchronous sprockets, and are in transmission connection through a chain; or the main transmission wheel (24) and the slave transmission wheel (25) are synchronous gears, and are in meshing transmission connection.

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