Food detection pulverizing device

Abstract

The utility model discloses a kind of food detection pulverizing device, it is related to food detection field, including device main body, device main body includes main support, and the front end of main support is fixed with pulverizing bin, pulverizing bin top is provided with feed hopper, and the bottom of pulverizing bin is provided with screening mechanism, screening mechanism side is provided with back material mechanism, back material mechanism other end is communicated with feed hopper, cooling mechanism is set on main support, cooling mechanism includes the cooling jacket fixed in the outside of pulverizing bin, main support rear side is fixed with water tank, and water tank is communicated with cooling jacket between through back liquid pipeline and liquid inlet pipeline, and water suction bin is fixed on liquid inlet pipeline, and impeller is rotatably connected in water suction bin, and cooling assembly is set on the upper end of water tank. Advantage lies in: the low-temperature water in water tank is sent into liquid pipeline by impeller rotation, and low-temperature water enters into cooling jacket by liquid inlet pipeline, and cooling jacket carries out temperature reduction to pulverizing bin whole, avoid excessively high temperature to cause influence to food.

Description

Technical Field

[0001] This utility model relates to the field of food testing, and in particular to a food testing pulverizing device. Background Technology

[0002] Food safety testing involves detecting harmful substances in food, primarily harmful and toxic indicators. To test the components in food, chemical methods are required, and pulverizing and refining the food is an essential step.

[0003] For example, patent document CN223055750U discloses a food testing pulverizing device, including a cylinder, a lower cover, and an upper cover. The top of the cylinder has an opening communicating with the inner cavity. The lower cover is fixed to the bottom of the cylinder and is equipped with a pulverizing unit and a power unit for driving the pulverizing unit to rotate. The upper cover is screwed to the top of the cylinder to seal the opening. The upper cover is connected to a vertically extending channel. A disc is provided at the end of the channel away from the upper cover. A collection sleeve is screwed onto the disc. A step is provided inside the upper cover, and a filter is placed on the step. At least one set of support rods for holding is provided on the lower cover. By holding the support rods and shaking the cylinder upwards, the pulverized particles are screened through the filter. Particles that meet the fineness requirements enter the channel and fall into the collection sleeve for collection and storage. This realizes particle screening inside the cylinder, eliminating the need for emptying and operation, simplifying the operation steps, avoiding contamination of food particles during screening, and ensuring the accuracy of testing.

[0004] In existing technologies, proteins or other heat-sensitive substances in some foods are prone to denaturation or volatilization during the grinding process. To avoid heat-induced deterioration affecting the final test results, a food testing grinding device with cooling function is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a food testing and pulverizing device to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions: A food testing and pulverizing device includes a main body, which includes a main support. A pulverizing chamber is fixedly connected to the front end of the main support. A feeding hopper is provided at the top of the pulverizing chamber. A screening mechanism is provided at the bottom of the pulverizing chamber. A return mechanism is provided on one side of the screening mechanism, and the other end of the return mechanism is connected to the feeding hopper. A receiving box is provided at the bottom of the screening mechanism. A cooling mechanism is provided on the main support. The cooling mechanism includes a cooling jacket fixedly connected to the outside of the pulverizing chamber. A water tank is fixedly connected to the rear side of the main support. An inlet pipe is fixedly connected to the lower side of the water tank. The other end of the inlet pipe is connected to the lower end of the cooling jacket. A return pipe is fixedly connected to the top of the water tank. The other end of the return pipe is connected to the upper end of the cooling jacket. A water absorption chamber is fixedly connected to the inlet pipe. An impeller is rotatably connected inside the water absorption chamber. A cooling component is provided at the upper end of the water tank.

[0007] Preferably, the cooling component includes a support ring fixedly connected to the top of the water tank, a box bracket snapped onto the support ring, a mesh box fixedly connected to the bottom of the box bracket, ice packs placed inside the mesh box, and a cooling box cover movably connected to the top of the water tank.

[0008] Preferably, the main body of the device also includes a crushing chamber cover hinged to one side of the front end of the main support, and a first locking bolt hinged to the other side of the front end of the main support. The first locking bolt and the crushing chamber cover can be tightly fitted. A primary screen is bolted to the lower end of the crushing chamber, and a crushing blade assembly is rotatably connected inside the crushing chamber.

[0009] Preferably, a transmission vertical shaft is rotatably connected to the main support, a servo motor is fixedly connected to the top of the main support, the output end of the servo motor is fixedly connected to the transmission vertical shaft, a first bevel gear is fixedly connected to the transmission vertical shaft, a second bevel gear is coaxially fixedly connected to the rear side of the crushing blade assembly, the second bevel gear meshes with the first bevel gear, a fourth bevel gear is fixedly connected to the transmission vertical shaft, and a third bevel gear is coaxially fixedly connected to the front side of the impeller, the third bevel gear meshes with the fourth bevel gear.

[0010] Preferably, the feed hopper includes a hopper body fixedly connected to the top of the crushing chamber, a baffle is rotatably connected inside the hopper body via a torsion spring, an operating knob is coaxially fixedly connected to the front side of the hinge position of the baffle, and a hopper closing cover is movably connected to the top of the hopper body.

[0011] Preferably, the screening mechanism includes a closed box fixedly connected to the bottom of the crushing chamber. Several evenly distributed sliding rods are fixedly connected inside the bottom of the closed box. An inclined screen bed is slidably connected to the sliding rods. A spring is fixedly connected between the inclined screen bed and the closed box. A feed pipe is fixedly connected to the top of the closed box. A conical surface is provided at the bottom of the closed box. A screening box cover is hinged to one side of the front end of the closed box. A second locking bolt is hinged to the other side of the front end of the closed box. The second locking bolt and the screening box cover can be tightly fitted together.

[0012] Preferably, a connecting push rod is fixedly connected to the rear side of the inclined screen bed, and a straight groove is provided at the other end of the connecting push rod. A crankshaft is rotatably connected to the main support, and the crankshaft is hinged to the straight groove of the connecting push rod. A driven gear is fixedly connected to the top of the crankshaft, and a driving gear is fixedly connected to the transmission vertical shaft. The driving gear meshes with the driven gear.

[0013] Preferably, the material return mechanism includes a material return cylinder fixedly connected to one side of the main support. The material return cylinder is connected to the internal space of the enclosed box. A pushing auger is rotatably connected inside the material return cylinder. The pushing auger is connected to the transmission vertical shaft through a sprocket and chain. A material return ramp is fixedly connected to the top of the material return cylinder. The other end of the material return ramp is fixedly connected to and communicates with the lower end of the bucket body.

[0014] The beneficial effects are as follows: through the setting of the cooling mechanism, the impeller rotates to draw low-temperature water from the water tank into the water suction chamber, and then flows into the liquid inlet pipe. The low-temperature water enters the cooling jacket through the liquid inlet pipe. The cooling jacket cools the entire crushing chamber, avoiding the impact of excessively high temperatures on the substances in the food. The water that has passed through the cooling jacket flows back into the water tank through the liquid return pipe. The cooling components ensure that the water in the water tank is always at a low temperature.

[0015] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a perspective view of a food testing and pulverizing device according to the present invention; Figure 2 This is a right-side sectional view of the food testing and pulverizing device described in this utility model; Figure 3 This is a front sectional view of the food testing and pulverizing device described in this utility model; Figure 4 This is a perspective view showing the relative positions of the main body and cooling mechanism of the food testing and pulverizing device described in this utility model. Figure 5 This is a three-dimensional structural view of the pulverizing blade assembly and the feeding auger of the food testing and pulverizing device described in this utility model; Figure 6 This is a three-dimensional structural view of the main body of the food testing and pulverizing device described in this utility model; Figure 7 This is a perspective view showing the relative positions of the feed hopper and the return mechanism of the food testing and pulverizing device described in this utility model. Figure 8 This is a three-dimensional structural view of the cooling mechanism of the food testing and pulverizing device described in this utility model.

[0017] The annotations in the attached figures are explained as follows: 101. Main support; 102. Crushing chamber; 103. Servo motor; 104. Crushing blade assembly; 105. Crushing chamber cover; 106. First locking bolt; 107. Primary screen; 108. Transmission vertical shaft; 109. First bevel gear; 110. Second bevel gear; 201. Bucket body; 202. Baffle; 203. Control knob; 204. Bucket closing cover; 301. Enclosed box; 302. Screening box cover; 303. Feed pipe; 304. Inclined screen bed; 305. Slide rod; 306. Spring; 307. Second locking bolt; 308, drive gear; 309, driven gear; 310, crankshaft; 311, connecting push rod; 401, return cylinder; 402, pusher auger; 403, return inclined chute; 501, water tank; 502, cooling jacket; 503, return liquid pipe; 504, inlet liquid pipe; 505, third bevel gear; 506, fourth bevel gear; 507, water suction chamber; 508, impeller; 509, support ring; 510, mesh box; 511, box bracket; 512, cooling box cover; 6, receiving box. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-8As shown, a food testing and pulverizing device includes a main body, which includes a main support 101. A pulverizing chamber 102 is welded and fixedly connected to the front end of the main support 101. A feeding hopper is provided at the top of the pulverizing chamber 102, and a screening mechanism is provided at the bottom of the pulverizing chamber 102. A return mechanism is provided on one side of the screening mechanism, and the other end of the return mechanism is connected to the feeding hopper. A receiving box 6 is provided at the bottom of the screening mechanism. A cooling mechanism is provided on the main support 101. The cooling mechanism includes a cooling jacket 502 bolted to the outside of the pulverizing chamber 102. A water tank 501 is bolted to the rear side of the main support 101. An inlet pipe 504 is sealed and fixedly connected to the lower side of the water tank 501. The other end of the inlet pipe 504 is connected to the lower end of the cooling jacket 502. A return pipe 503 is sealed and fixedly connected to the top of the water tank 501. The other end of the return pipe 503 is connected to the upper end of the cooling jacket 502. A water absorption chamber 507 is welded to the inlet pipe 504, and an impeller is sealed and rotatably connected inside the water absorption chamber 507. 508. A cooling component is installed at the top of the water tank 501. During use, the operator places food into the feed hopper, which then feeds it into the grinding chamber 102. The grinding blade assembly 104 rotates to grind the food. The ground food scraps fall into the screening mechanism, which sends food scraps of the correct particle size into the receiving box 6, while food scraps of the incorrect size fall into the return mechanism, which returns the food scraps to the feed hopper. This completes the food grinding operation. At the same time, the impeller 508 rotates to draw the low-temperature water in the water tank 501 into the water suction chamber 507, and then it flows into the liquid inlet pipe 504. The low-temperature water enters the cooling jacket 502 through the liquid inlet pipe 504. The cooling jacket 502 cools the entire crushing chamber 102 to prevent excessively high temperatures from affecting the substances in the food. The water that has passed through the cooling jacket 502 flows back into the water tank 501 through the liquid return pipe 503. The cooling components ensure that the water in the water tank 501 is always at a low temperature.

[0021] The cooling assembly includes a support ring 509 fixedly connected to the top of the water tank 501, a box bracket 511 snapped onto the support ring 509, a mesh box 510 fixedly connected to the bottom of the box bracket 511, an ice pack placed inside the mesh box 510, and a cooling box cover 512 movably connected to the top of the water tank 501. In use, the operator places the ice pack inside the mesh box 510, then places the box bracket 511 on the support ring 509, thus immersing the mesh box 510 in the water of the water tank 501, and then places the cooling box cover 512 on top of the water tank 501.

[0022] The main body of the device also includes a crushing chamber cover 105 hinged to one side of the front end of the main support 101. A first locking bolt 106 is hinged to the other side of the front end of the main support 101. The first locking bolt 106 and the crushing chamber cover 105 can be tightly fitted. A primary screen 107 is bolted to the lower end of the crushing chamber 102. A crushing blade assembly 104 is rotatably connected inside the crushing chamber 102. When in use, the operator releases the first locking bolt 106 from the crushing chamber cover 105, so the crushing chamber cover 105 can be opened. The operator can clean and inspect the inside of the crushing chamber 102. The primary screen 107 can block larger food particles, allowing large particles to remain in the crushing chamber 102 until they are crushed by the crushing blade assembly 104.

[0023] A transmission vertical shaft 108 is rotatably connected to the main support 101. A servo motor 103 is fixedly connected to the top of the main support 101. The output end of the servo motor 103 is fixedly connected to the transmission vertical shaft 108. A first bevel gear 109 is fixedly connected to the transmission vertical shaft 108. A second bevel gear 110 is coaxially fixedly connected to the rear side of the crushing blade assembly 104. The second bevel gear 110 meshes with the first bevel gear 109. A fourth bevel gear 506 is fixedly connected to the transmission vertical shaft 108. A third bevel gear is coaxially fixedly connected to the front side of the impeller 508. Wheel 505, third bevel gear 505 and fourth bevel gear 506 mesh. In use, servo motor 103 drives transmission vertical shaft 108 to rotate, transmission vertical shaft 108 drives first bevel gear 109 to rotate, first bevel gear 109 drives second bevel gear 110 to rotate, second bevel gear 110 drives crushing blade assembly 104 to rotate. At the same time, transmission vertical shaft 108 drives fourth bevel gear 506 to rotate, fourth bevel gear 506 drives third bevel gear 505 to rotate, third bevel gear 505 drives impeller 508 to rotate.

[0024] The feeding hopper includes a hopper body 201 fixedly connected to the top of the crushing chamber 102. A baffle 202 is rotatably connected inside the hopper body 201 via a torsion spring. An operating knob 203 is coaxially fixedly connected to the front side of the hinge position of the baffle 202. A hopper sealing cover 204 is movably connected to the top of the hopper body 201. In use, the operator puts the food to be tested into the hopper body 201, and then puts the hopper sealing cover 204 in place to avoid the influence of the external environment during the crushing process. The operator turns the operating knob 203, which drives the baffle 202 to rotate. The baffle 202 deflects and lets the food to be tested in the hopper body 201 fall into the crushing chamber 102.

[0025] The screening mechanism includes a closed box 301 fixedly connected to the bottom of the crushing chamber 102. Several evenly distributed sliding rods 305 are fixedly connected inside the bottom of the closed box 301. An inclined screen bed 304 is slidably connected to the sliding rods 305 and slides along the sliding rods 305. A spring 306 is fixedly connected between the inclined screen bed 304 and the closed box 301. A feed pipe 303 is fixedly connected to the top of the closed box 301. A conical surface is provided at the bottom of the closed box 301. A screening box cover 302 is hinged to one side of the front end, and a second locking bolt 307 is hinged to the other side of the front end of the closed box 301. The second locking bolt 307 and the screening box cover 302 can be tightly fitted. When in use, the crushed food scraps fall onto the inclined screen bed 304 through the feed pipe 303. The inclined screen bed 304 generates reciprocating vibration. The inclined screen bed 304 sends the scraps with qualified particle size into the receiving box 6, while the unqualified scraps fall into the return cylinder 401 under the action of the inclined screen bed 304.

[0026] A linkage push rod 311 is fixedly connected to the rear side of the inclined screen bed 304. A straight groove is provided at the other end of the linkage push rod 311. A crankshaft 310 is rotatably connected to the main support 101. The crankshaft 310 is hinged to the straight groove of the linkage push rod 311. A driven gear 309 is fixedly connected to the top of the crankshaft 310. A drive gear 308 is fixedly connected to the transmission vertical shaft 108. The drive gear 308 and the driven gear 309 mesh. In use, the transmission vertical shaft 108 drives the drive gear 308 to rotate. The drive gear 308 drives the driven gear 309 to rotate. The driven gear 309 drives the crankshaft 310 to rotate. The crankshaft 311 drives the linkage push rod 311 to move back and forth. The linkage push rod 311 pushes the inclined screen bed 304 to move back and forth.

[0027] The return mechanism includes a return cylinder 401 fixedly connected to one side of the main support 101. The return cylinder 401 is connected to the internal space of the enclosed box 301. A pusher auger 402 is rotatably connected inside the return cylinder 401. The pusher auger 402 is connected to the transmission vertical shaft 108 through a sprocket and chain. A return ramp 403 is fixedly connected to the top of the return cylinder 401. The other end of the return ramp 403 is fixedly connected to and communicates with the lower end of the hopper body 201. In use, the transmission vertical shaft 108 rotates while driving the pusher auger 402 to rotate through the sprocket and chain. The pusher auger 402 pushes the food scraps upward. After the food scraps move to the upper side, they fall back into the hopper body 201 from the return ramp 403.

[0028] Working principle: The operator places the food to be tested into the hopper body 201, and then places the hopper sealing cover 204 to prevent external environmental influences during the crushing process. The servo motor 103 drives the transmission vertical shaft 108 to rotate, which in turn drives the first bevel gear 109 to rotate. The first bevel gear 109 drives the second bevel gear 110 to rotate, which in turn drives the crushing blade assembly 104 to rotate. Simultaneously, the transmission vertical shaft 108 drives the fourth bevel gear 506 to rotate, which in turn drives the third bevel gear 505 to rotate. The bevel gear 505 drives the impeller 508 to rotate, the transmission vertical shaft 108 drives the drive gear 308 to rotate, the drive gear 308 drives the driven gear 309 to rotate, the driven gear 309 drives the crankshaft 310 to rotate, the crankshaft 310 drives the connecting push rod 311 to reciprocate, the connecting push rod 311 pushes the inclined screen bed 304 to reciprocate. Simultaneously, the rotation of the transmission vertical shaft 108 drives the auger 402 to rotate via sprockets and chains. Then, the operator rotates the control knob 203, which drives the baffle 202 to rotate. 2. The deflection mechanism allows the food to be tested in the main body 201 of the hopper to fall into the crushing chamber 102. The crushing blade assembly 104 rotates to crush the food. The crushed food scraps fall onto the inclined screen bed 304 through the feed pipe 303. The inclined screen bed 304 vibrates reciprocatingly. The inclined screen bed 304 allows the scraps with qualified particle sizes to fall into the collection box 6, while the unqualified scraps fall into the return cylinder 401 under the action of the inclined screen bed 304. The pushing auger 402 pushes the food scraps upward. After moving to the upper side, the food scraps fall back into the main body 201 of the hopper through the return inclined channel 403. Thus, the food can be crushed. While crushing, the impeller 508 rotates and draws the low-temperature water in the water tank 501 into the water suction chamber 507, and then flows into the liquid inlet pipe 504. The low-temperature water enters the cooling jacket 502 through the liquid inlet pipe 504. The cooling jacket 502 cools the entire crushing chamber 102 to prevent excessively high temperatures from affecting the substances in the food. The water that has passed through the cooling jacket 502 flows back to the water tank 501 through the liquid return pipe 503. The cooling components ensure that the water in the water tank 501 is always at a low temperature.

[0029] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A food testing and pulverizing device, comprising a main body, characterized in that: The main body of the device includes a main support (101), a crushing chamber (102) is fixedly connected to the front end of the main support (101), a feeding hopper is provided at the top of the crushing chamber (102), a screening mechanism is provided at the bottom of the crushing chamber (102), a return mechanism is provided on one side of the screening mechanism, the other end of the return mechanism is connected to the feeding hopper, a receiving box (6) is provided at the bottom of the screening mechanism, a cooling mechanism is provided on the main support (101), the cooling mechanism includes a cooling jacket (502) fixedly connected to the outside of the crushing chamber (102), and the main support (101) A water tank (501) is fixedly connected to the rear side of the water tank (501), and an inlet pipe (504) is fixedly connected to the lower side of the water tank (501). The other end of the inlet pipe (504) is connected to the lower end of the cooling jacket (502). A return pipe (503) is fixedly connected to the top of the water tank (501), and the other end of the return pipe (503) is connected to the upper end of the cooling jacket (502). A water suction chamber (507) is fixedly connected to the inlet pipe (504), and an impeller (508) is rotatably connected inside the water suction chamber (507). A cooling component is provided at the upper end of the water tank (501).

2. The food testing and pulverizing device according to claim 1, characterized in that: The cooling assembly includes a support ring (509) fixedly connected to the top of the water tank (501), a box bracket (511) snapped onto the support ring (509), a mesh box (510) fixedly connected to the bottom of the box bracket (511), an ice pack placed inside the mesh box (510), and a cooling box cover (512) movably connected to the top of the water tank (501).

3. The food testing and pulverizing device according to claim 1, characterized in that: The main body of the device also includes a crushing chamber cover (105) hinged to one side of the front end of the main support (101), and a first locking bolt (106) hinged to the other side of the front end of the main support (101). The first locking bolt (106) and the crushing chamber cover (105) can be tightly fitted. A primary screen (107) is bolted to the lower end of the crushing chamber (102), and a crushing blade assembly (104) is rotatably connected inside the crushing chamber (102).

4. The food testing and pulverizing device according to claim 3, characterized in that: A transmission vertical shaft (108) is rotatably connected to the main support (101). A servo motor (103) is fixedly connected to the top of the main support (101). The output end of the servo motor (103) is fixedly connected to the transmission vertical shaft (108). A first bevel gear (109) is fixedly connected to the transmission vertical shaft (108). A second bevel gear (110) is coaxially fixedly connected to the rear side of the crushing blade assembly (104). The second bevel gear (110) meshes with the first bevel gear (109). A fourth bevel gear (506) is fixedly connected to the transmission vertical shaft (108). A third bevel gear (505) is coaxially fixedly connected to the front side of the impeller (508). The third bevel gear (505) meshes with the fourth bevel gear (506).

5. The food testing and pulverizing device according to claim 4, characterized in that: The feed hopper includes a hopper body (201) fixedly connected to the top of the crushing chamber (102). A baffle (202) is rotatably connected inside the hopper body (201) via a torsion spring. An operating knob (203) is coaxially fixedly connected to the front side of the hinge position of the baffle (202). A hopper closing cover (204) is movably connected to the top of the hopper body (201).

6. The food testing and pulverizing device according to claim 5, characterized in that: The screening mechanism includes a closed box (301) fixedly connected to the bottom of the crushing chamber (102). Several evenly distributed sliding rods (305) are fixedly connected inside the bottom of the closed box (301). An inclined screen bed (304) is slidably connected to the sliding rods (305). A spring (306) is fixedly connected between the inclined screen bed (304) and the closed box (301). A feed pipe (303) is fixedly connected to the top of the closed box (301). A conical surface is provided at the bottom of the closed box (301). A screening box cover (302) is hinged to one side of the front end of the closed box (301). A second locking bolt (307) is hinged to the other side of the front end of the closed box (301). The second locking bolt (307) and the screening box cover (302) can be tightly fitted together.

7. The food testing and pulverizing device according to claim 6, characterized in that: A connecting push rod (311) is fixedly connected to the rear side of the inclined screen bed (304). A straight groove is provided at the other end of the connecting push rod (311). A crankshaft (310) is rotatably connected to the main support (101). The crankshaft (310) is hinged to the straight groove of the connecting push rod (311). A driven gear (309) is fixedly connected to the top of the crankshaft (310). A driving gear (308) is fixedly connected to the transmission vertical shaft (108). The driving gear (308) meshes with the driven gear (309).

8. The food testing and pulverizing device according to claim 6, characterized in that: The material return mechanism includes a material return cylinder (401) fixedly connected to one side of the main support (101). The material return cylinder (401) is connected to the internal space of the enclosed box (301). A pusher auger (402) is rotatably connected inside the material return cylinder (401). The pusher auger (402) is connected to the transmission vertical shaft (108) through a sprocket and chain. A material return ramp (403) is fixedly connected to the top of the material return cylinder (401). The other end of the material return ramp (403) is fixedly connected to and communicates with the lower end of the bucket body (201).

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