A quantitative filling device for prefabricated food processing

Abstract

The present invention relates to the technical field of food filling, and specifically relates to a quantitative filling device for prefabricated dish processing, including a conveying unit; the conveying unit includes a guiding pipe for guiding and discharging the prefabricated dish after quantification and a suction unit for sucking out the remaining prefabricated dish in the guiding pipe. The suction unit starts to perform a primary suction on the guiding pipe after all the prefabricated dish after quantification enters the guiding pipe, and the volume of each suction is constant. The present invention reduces the floating threshold of the weight of the prefabricated dish during filling, improves the stability during filling, and avoids the situation where the prefabricated dish remains in the guiding pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of food filling, and specifically relates to a quantitative filling device for processed prefabricated dishes. Background Art

[0002] In the prior art, there are many filling methods for prefabricated dishes. For example, a cylinder is used to push a metering cylinder to move to complete the filling of materials (such as grease). However, the traditional pushing method using a cylinder to push the metering cylinder cannot complete synchronous filling during pushing, resulting in low efficiency.

[0003] Chinese Patent CN113896160B discloses a quantitative filling structure, including: a metering cylinder with a metering chamber inside; a piston is slidably installed in the metering chamber, and the piston divides the metering chamber into a first chamber and a second chamber; a reversing valve with an input valve port, an output valve port, a first valve port, and a second valve port; the input valve port is used to input the filling liquid, the first valve port is communicated with the first chamber, the second valve port is communicated with the second chamber, and the output valve port is used to output the filling liquid; when the reversing valve is switched to the first state, the input valve port is communicated with the first valve port, and the output valve port is communicated with the second valve port; when the reversing valve is switched to the second state, the input valve port is communicated with the second valve port, and the output valve port is communicated with the first valve port.

[0004] Although the above solution can achieve continuous filling, during the filling process, a large amount of materials will remain in the second oil pipe. In this way, during the first filling, the materials metered by the metering cylinder need to first fill the second oil pipe before filling can be carried out. This reduces the amount of materials filled in the first filling, and the materials remaining in the second oil pipe cannot be cleaned, and are prone to deterioration after long-term retention. Summary of the Invention

[0005] In view of the above problems, a quantitative filling device for processed prefabricated dishes is provided. By setting a suction unit, the prefabricated dishes in the guiding pipe can be completely discharged under the action of the airflow generated by the suction unit, reducing the floating threshold of the weight of the prefabricated dishes during filling, improving the stability during filling, and avoiding the situation of prefabricated dishes remaining in the guiding pipe.

[0006] To solve the problems of the prior art, the present invention provides a quantitative filling device for processed prefabricated dishes, including a conveying unit; the conveying unit includes a guiding pipe for guiding and discharging the metered prefabricated dishes and a suction unit for sucking out the remaining prefabricated dishes in the guiding pipe. The suction unit is started after all the metered prefabricated dishes enter the guiding pipe and performs a suction on the guiding pipe once.

[0007] Preferably, a discharge assembly with a sealed cavity inside is provided at the lower part of the suction unit. The discharge assembly is connected to and communicates with the end of the guiding pipe. An opening that can be opened and closed is provided at the bottom of the sealed cavity. When the guiding pipe guides the prefabricated food into the sealed cavity, the opening is opened, and the sealed cavity discharges the prefabricated food. When the suction unit sucks, the opening is in a closed state.

[0008] Preferably, the suction unit has a suction cavity. The volume of the suction cavity is the same as that of the sealed cavity, and the suction cavity communicates with the sealed cavity. The suction cavity can reduce its own volume and then increase it, so that the sealed cavity generates suction and sucks the prefabricated food remaining in the guiding pipe into the sealed cavity.

[0009] Preferably, the volume of the suction cavity is larger than the internal volume of the guiding pipe.

[0010] Preferably, two guiding pipes are provided. The two guiding pipes alternately guide a fixed amount of prefabricated food into the discharge assembly and discharge it. A commutation unit is provided in the discharge assembly. When one guiding pipe guides the prefabricated food to be discharged, the commutation unit blocks the end of the other guiding pipe.

[0011] Preferably, the commutation unit includes a rotating ring that rotates in the suction cavity. A through groove is formed in the side wall of the rotating ring in the radial direction of the rotating ring. When the through groove rotates with the rotating ring and communicates with one of the guiding pipes, the rotating ring stops rotating, and the guiding pipe that has completed the communication can communicate with the sealed cavity.

[0012] Preferably, the guiding pipe is composed of a vertical pipe and a horizontal pipe to form an "L" - shaped structure. A pushing unit is provided on the horizontal pipe of the guiding pipe to push out the prefabricated food remaining in the horizontal pipe after the suction unit stops sucking.

[0013] Preferably, the guiding pipe is made of stainless steel.

[0014] Preferably, the metering unit includes a pushing unit that reciprocates horizontally and two metering bins that are respectively arranged at both ends of the pushing unit along the moving direction of the pushing unit for storing the prefabricated food quantitatively. The ends of the metering bins are connected to the guiding pipe. When the pushing unit moves towards the connection between the metering bin and the guiding pipe, the pushing unit can push the prefabricated food in the metering bin into the guiding pipe.

[0015] Preferably, feeding units for feeding the metering bins are respectively provided on the two metering bins. When the pushing unit pushes one of the metering bins, a negative pressure is formed in the other metering bin. Under the action of the negative pressure, the feeding unit starts to feed the metering bin until the pushing unit stops moving, and then the feeding unit stops feeding the metering bin.

[0016] The beneficial effects of the present invention compared with the prior art are:

[0017] 1. By setting up a suction unit in the present invention, the prefabricated dishes in the guiding pipe can be completely discharged under the action of the air flow generated by the suction unit, reducing the floating threshold of the weight during filling of the prefabricated dishes, improving the stability during filling, and avoiding the situation where the prefabricated dishes remain in the guiding pipe.

[0018] 2. In the present invention, the volume of the suction chamber in the suction unit is set to be the same as the volume of the sealing chamber in the discharge assembly, ensuring that the volume of the material that can be sucked by the suction force generated when the suction chamber changes from small to large will not overflow from the sealing chamber into the suction chamber, thereby ensuring the cleanliness of the suction chamber.

[0019] 3. In the present invention, the volume of the suction chamber is made larger than the volume in the guiding pipe, improving the suction effect of the suction unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic diagram of a quantitative filling device for processing prefabricated dishes Figure 1 .

[0021] Figure 2 is a three-dimensional schematic diagram of a quantitative filling device for processing prefabricated dishes Figure 2 .

[0022] Figure 3 is a side view of a quantitative filling device for processing prefabricated dishes.

[0023] Figure 4 is a quantitative filling device for processing prefabricated dishes Figure 3 sectional schematic view at A - A.

[0024] Figure 5 is a sectional three-dimensional schematic diagram of a quantitative filling device for processing prefabricated dishes.

[0025] Figure 6 is a quantitative filling device for processing prefabricated dishes Figure 5 local enlarged schematic view at B.

[0026] Figure 7 is a quantitative filling device for processing prefabricated dishes Figure 5 local enlarged schematic view at C.

[0027] Figure 8 is a three-dimensional schematic diagram of a quantitative filling device for processing prefabricated dishes after removing the pushing unit and part of the guiding pipe.

[0028] Figure 9 is a three-dimensional schematic diagram of a quantitative filling device for processing prefabricated dishes after removing the quantitative unit, pushing unit and part of the guiding pipe.

[0029] Figure 10 It is a three-dimensional schematic diagram of a quantitative filling device for prefabricated food processing after removing the discharge component, quantitative unit, pushing unit, and part of the guiding pipe.

[0030] The reference numerals in the figure are:

[0031] 1. Quantitative unit; 11. Quantitative bin; 12. Pushing unit; 121. Pushing block; 122. Second rotary driver; 123. Guide rod; 124. Threaded rod; 13. Fourth switching valve; 2. Conveying unit; 21. Suction unit; 211. Pressing plate; 212. Second switching valve; 213. Third switching valve; 214. Corrugated sleeve; 215. Spring; 22. Guiding pipe; 23. Discharge component; 231. Discharge bin; 232. First switching valve; 233. Reversing unit; 2331. First rotary driver; 2332. Gear; 2333. Toothed ring; 2334. Rotating ring; 2335. Through slot; 24. Pushing unit; 241. Second pump body; 242. Extension pipe; 243. Pushing block. Detailed implementation manners

[0032] To further understand the features, technical means, specific purposes, and functions achieved by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0033] Referring to Figure 1 and Figure 2 : A quantitative filling device for prefabricated food processing, including a conveying unit 2; the conveying unit 2 includes a guiding pipe 22 for guiding and discharging the prefabricated food after quantification and a suction unit 21 for sucking out the remaining prefabricated food in the guiding pipe 22. The suction unit 21 starts after all the prefabricated food after quantification enters the guiding pipe 22 and performs a suction on the guiding pipe 22 once.

[0034] At the upper part of the conveying unit 2, a metering unit 1 is provided. The metering unit 1 discharges the prefabricated dishes in a quantified manner into the conveying unit 2. The guiding pipe 22 has an "L" - shaped structure. It can be understood that the guiding pipe 22 is composed of a vertical pipe and a horizontal pipe. The upper part of the vertical pipe of the guiding pipe 22 is connected to the metering unit 1. The metering unit 1 first discharges the quantified prefabricated dishes into the vertical pipe and then discharges them through the horizontal pipe. When the suction unit 21 sucks the prefabricated dishes in the guiding pipe 22, the volume of each suction by the suction unit 21 is constant. If the suction unit 21 continuously sucks the prefabricated dishes in the guiding pipe 22, it is easy for the prefabricated dishes to enter the interior of the suction unit 21. In this way, it is easy to cause blockage inside the suction unit 21, and then the suction unit 21 loses its suction function. At the same time, the prefabricated dishes that enter the suction unit 21 are not easy to clean. After a long time, the prefabricated dishes remaining in the suction unit 21 will deteriorate. The deteriorated prefabricated dishes are easy to mix into the prefabricated dishes to be filled, which is likely to cause food safety problems. And sucking the prefabricated dishes in the guiding pipe 22 can also prevent the prefabricated dishes remaining in the guiding pipe 22 from deteriorating. In the existing filling method, when the metering unit 1 first injects the prefabricated dishes into the guiding pipe 22, the guiding pipe 22 is in a clean state. After the guiding pipe 22 leads out the prefabricated dishes, there must be prefabricated dishes remaining in the guiding pipe 22. As a result, the total weight of the filled prefabricated dishes is reduced compared to the standard weight during quantification. After the suction unit 21 is set, by sucking the guiding pipe 22 through the suction unit 21, the prefabricated dishes in the guiding pipe 22 can be completely discharged under the drive of the air flow, reducing the floating threshold of the weight per gram during filling and improving the stability during filling.

[0035] Refer to Figure 1 and Figure 2 : At the lower part of the suction unit 21, a discharge component 23 with a sealed cavity inside is provided. The discharge component 23 is connected to and communicates with the end of the guiding pipe 22. An opening that can be opened and closed is provided at the bottom of the sealed cavity. When the guiding pipe 22 guides the prefabricated dishes into the sealed cavity, the opening is opened, and the sealed cavity discharges the prefabricated dishes. When the suction unit 21 sucks, the opening is in a closed state.

[0036] The discharging unit includes a discharging bin 231 and a first switching valve 232. The interior of the discharging bin 231 forms a sealed cavity. The suction unit 21 is arranged at the upper part of the discharging bin 231, and a suction cavity is provided in the suction unit 21. The suction cavity communicates with the sealed cavity, and an opening is formed through the bottom of the discharging bin 231. The first switching valve 232 is arranged on the opening. After the quantitative unit 1 discharges the prefabricated dishes into the guiding pipe 22, the guiding pipe 22 discharges the quantitative prefabricated dishes into the sealed cavity of the discharging unit. At this time, the first switching valve 232 is in an open state. When the prefabricated dishes in the guiding pipe 22 no longer enter the sealed cavity, the first switching valve 232 at the bottom of the discharging bin 231 closes, and the sealed bin is in a sealed state. Then the suction unit 21 starts to suck, and the residual prefabricated dishes that cannot be discharged by themselves in the guiding pipe 22 can be sucked into the discharging bin 231 by the suction unit 21. After the suction of the suction unit 21 is completed, the first switching valve 232 is opened again to discharge the sucked prefabricated dishes for the second time.

[0037] Refer to Figures 2 - 4 : The suction unit 21 has a suction cavity. The volume of the suction cavity is the same as that of the sealed cavity, and the suction cavity communicates with the sealed cavity. The suction cavity can decrease and then increase its own volume, so that the sealed cavity generates suction and sucks the prefabricated dishes remaining in the guiding pipe 22 into the interior of the sealed cavity.

[0038] The suction unit 21 includes a pressing plate 211, a second switching valve 212, a third switching valve 213, a corrugated sleeve 214, and a spring 215. The corrugated sleeve 214 is vertically arranged at the upper part of the discharge bin 231. The pressing plate 211 is horizontally and fixedly arranged at the upper part of the corrugated sleeve 214. The corrugated sleeve 214 sealed by the pressing plate 211 forms a suction chamber. The spring 215 is arranged in the corrugated sleeve 214 along the telescopic direction of the corrugated sleeve 214, and both ends of the spring 215 are fixedly connected to the pressing plate 211 and the upper part of the discharge bin 231 respectively. The second switching valve 212 is arranged on the pressing plate 211. The third switching valve 213 is arranged on one side of the guiding pipe 22. A first pump body is arranged at the end of the second switching valve 212 away from the pressing plate 211. The second switching valve 212 and the third switching valve 213 are alternately opened. When the second switching valve 212 is opened, the first pump body starts. At this time, the first switching valve 232 arranged at the bottom of the discharge bin 231 is in the closed state. This is because the suction chamber and the sealing chamber are interconnected. If the first switching valve 232 is in the open state, a negative pressure cannot be formed in the suction chamber. Therefore, before suction, the first switching valve 232 needs to be closed. After the first pump body starts, the air in the suction chamber is pumped out. In this way, the spring 215 in the corrugated sleeve 214 is gradually pressed by the pressing plate 211. At this time, the third switching valve 213 is in the closed state. When the spring 215 is completely compressed, the suction chamber is compressed to the smallest state. Subsequently, the second switching valve 212 is closed and the third switching valve 213 is opened. The spring 215 drives the pressing plate 211 to reset. At this time, the air in the sealing chamber surges into the suction chamber, and the outside air enters the guiding pipe 22 through the third switching valve 213 and pushes the prefabricated dishes remaining in the guiding pipe 22 towards the sealing chamber. For the sake of hygiene, an inert gas tank can be connected to the end of the third switching valve 213, so as to ensure the cleanliness of the prefabricated dishes.

[0039] Refer to Figures 3 - 5 : The volume of the suction chamber is larger than the internal volume of the guiding pipe 22.

[0040] By designing the volume of the suction chamber to be larger than that of the guide tube 22, it is ensured that the suction chamber can better suck out the prefabricated dishes remaining in the guide tube 22 during suction. If the volume of the suction chamber is less than or equal to that of the guide tube 22, after the suction chamber forms a suction force in the sealed chamber, it cannot ensure the effective suction of the prefabricated dishes remaining in the guide tube 22. The setting of the volume size of the suction chamber is illustrated by the following example. If it is necessary to suck the prefabricated dishes remaining at one end of the guide tube 22 close to the metering unit 1 into the discharge assembly 23, it is inevitable that the volume of the suction chamber is larger than the internal volume of the guide tube 22. During the process of the suction chamber changing from the uncompressed state to the fully compressed state, the changing volume size of the suction chamber is the volume size during the suction of the suction unit 21. The suction force generated by the suction chamber drives out the prefabricated dishes remaining in the guide tube 22 through the flowing air current in the guide tube 22. However, as the prefabricated dishes in the guide tube 22 decrease, the ability of the air current to drive out the prefabricated dishes gradually decreases. Thus, some of the prefabricated dishes being sucked stop moving when they reach the end of the guide tube 22 close to the discharge assembly 23, making it impossible to completely discharge the prefabricated dishes located in the guide tube 22. Therefore, only by making the volume of the suction chamber larger than the volume of the guide tube 22 can it be ensured that the suction unit 21 can generate enough flowing air to suck out the prefabricated dishes in the guide tube 22.

[0041] Refer to Figure 4 、 Figure 9 and Figure 10 : There are two guide tubes 22, and the two guide tubes 22 alternately guide a fixed amount of prefabricated dishes into the discharge assembly 23 for discharge. A commutation unit 233 is arranged in the discharge assembly 23, and the commutation unit 233 blocks the end of the other guide tube 22 when one guide tube 22 guides the discharge of the prefabricated dishes.

[0042] The suction unit 21 can only suck one guide pipe 22 at a time. During single filling, only one guide pipe 22 will contain prefabricated dishes. The commutation unit 233 seals the other guide pipe 22, which can ensure that the prefabricated dishes in the other guide pipe 22 will not enter the sealing cavity, thus affecting the weight. This is because when discharging materials from one of the guide pipes 22, the metering unit 1 feeds materials quantitatively at the end of the other guide pipe 22, and the suction unit 21 requires sufficient sealing during suction. In this way, the suction conditions of the suction unit 21 cannot be met. That is, when the suction cavity in the suction unit 21 compresses and restores, the suction force generated by the suction unit 21 will act on both guide pipes 22 at the same time. The guide pipe 22 with the end in the state of quantitative feeding will have too much feeding, while the guide pipe 22 that needs to discharge the residual prefabricated dishes is prone to the situation that the residual prefabricated dishes cannot be discharged. After the commutation unit 233 is set, the above situation is avoided. The commutation unit 233 includes a first rotary driver 2331, a gear 2332 and a toothed ring 2333. The first rotary driver 2331 is vertically arranged on one side of the discharge bin 231. The gear 2332 is fixedly arranged on the output end of the first rotary driver 2331. The toothed ring 2333 is rotatably arranged in the discharge bin 231. The gear 2332 passes through the discharge bin 231 and meshes with the toothed ring 2333 located in the discharge bin 231. The first rotary driver 2331 is preferably a servo motor.

[0043] Refer to Figure 4 and Figure 6 : The commutation unit 233 includes a rotating ring 2334 that rotates in the suction cavity. A through groove 2335 is formed in the side wall of the rotating ring 2334 along the radial direction of the rotating ring 2334. When the through groove 2335 rotates with the rotating ring 2334 and communicates with one of the guide pipes 22, the rotating ring 2334 stops rotating, and the guide pipe 22 that has completed the communication can communicate with the sealing cavity.

[0044] The rotating ring 2334 is fixedly arranged at the lower part of the toothed ring 2333. When the first rotary driver 2331 drives the toothed ring 2333 to rotate through the gear 2332, the rotating ring 2334 rotates synchronously with the toothed ring 2333, and the rotating ring 2334 drives the through groove 2335 to rotate synchronously, realizing the switching function between the two guide pipes 22, so that only one guide pipe 22 can communicate with the sealing cavity each time.

[0045] Refer to Figures 7 - 10 : The guide pipe 22 is composed of a vertical pipe and a horizontal pipe to form an "L" - shaped structure. A pushing unit 24 is arranged on the horizontal pipe of the guide pipe 22 to push out the residual prefabricated dishes in the horizontal pipe after the suction unit 21 stops suction.

[0046] At one end of the horizontal pipe of the guiding pipe 22 away from the discharging assembly 23, a pushing unit 24 is provided to push out the prefabricated dishes remaining in the horizontal pipe after the suction unit 21 stops suction. Although the suction unit 21 can suck out most of the prefabricated dishes from the guiding pipe 22, there are still some prefabricated dishes remaining in the horizontal pipe. At this time, the pushing unit 24 is required to completely push out the prefabricated dishes in the horizontal pipe. The pushing unit 24 includes a second pump body 241, an extension pipe 242, and a pushing block 243. The extension pipe 242 is connected to one end of the horizontal pipe away from the discharging assembly 23 along the extending direction of the horizontal pipe. The second pump body 241 is arranged at the end of the extension pipe 242 away from the horizontal pipe. The pushing block 243 is slidably arranged in the extension pipe 242. After the second pump body 241 injects gas into the extension pipe 242, the pushing block 243 can slide from the extension pipe 242 into the horizontal pipe. In this way, the pushing block 243 can push out all the prefabricated dishes remaining in the horizontal pipe. It should be noted that when the pushing block 243 completely enters the horizontal pipe, the pushing block 243 seals the connection between the vertical pipe and the horizontal pipe, ensuring that there is no air leakage when the second pump body 241 sucks back the gas in the extension pipe 242.

[0047] Refer to Figures 8 - 10 : The guiding pipe 22 is made of stainless steel material.

[0048] Refer to Figure 1 、 Figure 4 、 Figure 5 and Figure 8 : The metering unit 1 includes a pushing unit 12 that reciprocates horizontally and two metering bins 11 that are respectively arranged at both ends of the pushing unit 12 along the moving direction of the pushing unit for storing prefabricated dishes quantitatively. The end of the metering bin 11 is connected to the guiding pipe 22. When the pushing unit 12 moves towards the connection between the metering bin 11 and the guiding pipe 22, it can push the prefabricated dishes in the metering bin 11 into the guiding pipe 22.

[0049] The pushing unit 12 includes a pushing block 121, a second rotary driver 122, a guiding rod 123, and a threaded rod 124. Both ends of the pushing block 121 are inserted into the two metering bins 11 and are slidably matched with the two metering bins 11. The guiding rod 123 penetrates through the pushing block 121 along the moving direction of the pushing block 121 and is slidably matched with the pushing block 121. The threaded rod 124 is arranged parallel to the guiding rod 123 along the extending direction of the guiding rod 123 and penetrates through the pushing block 121. The threaded rod 124 is threadedly matched with the pushing block 121. The second rotary driver 122 is arranged at the end of the threaded rod 124. The second rotary driver 122 drives the threaded rod 124 to rotate, causing the pushing block 121 to reciprocate. The second rotary driver 122 is preferably a servo motor.

[0050] Refer to Figure 2:Feeding units for feeding the metering bins 11 are respectively arranged on the two metering bins 11. When the pusher unit 12 pushes the materials in one of the metering bins 11, a negative pressure is formed in the other metering bin 11. Under the action of the negative pressure, the feeding unit starts to feed the metering bin 11 until the pusher unit 12 stops moving, and then the feeding unit stops feeding the metering bin 11.

[0051] The feeding unit includes a fourth switching valve 13. When the pusher unit 12 pushes the materials in one of the metering bins 11, the fourth switching valve 13 on the other metering bin 11 is opened. At this time, the end of the guiding pipe 22 in the feeding state close to the discharging assembly is in a closed state. In this way, the prefabricated dishes in the feeding unit can be sucked into the metering bin 11 under the action of the negative pressure, and the negative pressure generated by each pushing of the pusher unit 12 is constant, thus ensuring the metering effect.

[0052] The above embodiments only represent one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A quantitative filling device for prefabricated food processing, comprising a quantitative unit (1) and a conveying unit (2); It is characterized in that The conveying unit (2) includes a guiding pipe (22) for guiding and discharging the prefabricated food after quantification and a suction unit (21) for sucking out the remaining prefabricated food in the guiding pipe (22). The suction unit (21) starts to operate and performs a primary suction on the guiding pipe (22) after all the prefabricated food after quantification enters the guiding pipe (22); The quantitative unit (1) includes a pushing unit (12) that reciprocates horizontally and two quantitative bins (11) for quantitatively storing prefabricated food respectively arranged at both ends of the pushing unit (12) along the moving direction of the pushing unit. The end of the quantitative bin (11) is communicated with the guiding pipe (22). When the pushing unit (12) moves towards the connection between the quantitative bin (11) and the guiding pipe (22), it can push the prefabricated food in the quantitative bin (11) into the guiding pipe (22); There are two guiding pipes (22). The two guiding pipes (22) alternately guide the quantified prefabricated food into the discharging assembly (23) and discharge it. A commutation unit (233) is arranged in the discharging assembly (23). When one guiding pipe (22) guides the prefabricated food to be discharged, the commutation unit (233) blocks the end of the other guiding pipe (22); A discharging assembly (23) with a sealed cavity inside is arranged below the suction unit (21). The discharging assembly (23) is connected and communicated with the end of the guiding pipe (22). An openable opening is arranged at the bottom of the sealed cavity. When the guiding pipe (22) guides the prefabricated food into the sealed cavity, the opening is opened, and the sealed cavity discharges the prefabricated food. When the suction unit (21) sucks, the opening is in a closed state; The guiding pipe (22) is composed of a vertical pipe and a horizontal pipe to form an "L" - shaped structure. A pushing unit (24) for pushing out the remaining prefabricated food in the horizontal pipe after the suction unit (21) stops sucking is arranged on the horizontal pipe of the guiding pipe (22); The pushing unit (24) includes a second pump body (241), an extension pipe (242) and a pushing block (243). The extension pipe (242) is connected to one end of the horizontal pipe far from the discharging assembly (23) along the extending direction of the horizontal pipe. The second pump body (241) is arranged at the end of the extension pipe (242) far from the horizontal pipe. The pushing block (243) is slidably arranged in the extension pipe (242); 2. The quantitative filling device for prefabricated food processing according to claim 1, characterized in that, The suction unit (21) has a suction cavity. The volume of the suction cavity is the same as the volume of the sealed cavity, and the suction cavity is communicated with the sealed cavity. The suction cavity can reduce its own volume and then increase, so that the sealed cavity generates suction and sucks the prefabricated food remaining in the guiding pipe (22) into the sealed cavity; 3. A quantitative filling device for prefabricated food processing according to claim 2, characterized in that, The volume of the suction cavity is larger than the internal volume of the guiding pipe (22).

4. The quantitative filling device for prefabricated food processing according to claim 3, characterized in that, The commutation unit (233) includes a rotating ring (2334) that rotates in the suction chamber. A through groove (2335) is formed in the side wall of the rotating ring (2334) in the radial direction of the rotating ring (2334). When the through groove (2335) rotates with the rotating ring (2334) and communicates with one of the guiding pipes (22), the rotating ring (2334) stops rotating, and the guiding pipe (22) that has completed the communication can communicate with the sealing chamber.

5. A quantitative filling device for prefabricated food processing according to claim 1, characterized in that, The guiding pipe (22) is made of stainless steel material.

6. A quantitative filling device for prefabricated food processing according to claim 1, characterized in that, Feeding units for feeding the metering bins (11) are respectively arranged on the two metering bins (11). When the pushing unit (12) pushes one of the metering bins (11), a negative pressure is formed in the other metering bin (11). Under the action of the negative pressure, the feeding unit starts to feed the metering bin (11) until the pushing unit (12) stops moving, and then the feeding unit stops feeding the metering bin (11).

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