Canning device for papaya sauce processing

By designing an automated papaya sauce canning device, automatic conveying and quantitative filling are achieved using table stands, plates and motor systems, the problem of low manual operation efficiency is solved, production efficiency is improved, and the adjustment of multiple canned volumes is supported.

CN222138646UActive Publication Date: 2024-12-10ANKANG YUEXIANGMING AGRICULTURAL DEVELOPMENT CO LTD
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Patent Information

Application Number
CN202420987417.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-09
Publication Date
2024-12-10
Estimated Expiration
2034-05-09

AI Technical Summary

Technical Problem

In the prior art, the papaya sauce processing canning device requires multiple manual operations, resulting in long downtime and low efficiency.

Method used

A canning device including a table frame, a counter plate, a motor, a belt, a weigher and a cutting assembly is designed. The quantitative filling of the sealed tank is realized through automatic conveying and adjustment boxes, reducing manual operation and improving production efficiency.

Benefits of technology

It realizes automatic canning, saves manual operation time, improves production efficiency, and supports the adjustment of various canned volumes, which is simple to operate and convenient to clean.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of sauce filling equipment, and discloses a canning device for papaya sauce processing, which comprises a table frame and a plurality of propping plates, the top end of the table frame is fixedly connected with four support blocks, the middle parts of the two support blocks on the right side are rotatably connected with slave rods, the left side of the top end of the table frame is fixedly connected with a motor I, and the left side of the top end of the table frame is fixedly connected with a motor II; the driving end of the first motor is fixedly connected with a main rod, the exterior of the main rod and the exterior of the auxiliary rod are slidably connected with a belt, the close sides of the two supporting blocks on the left side and the right side are fixedly connected with a through hole strip, the inner wall of the middle of the through hole strip is fixedly connected with a weighing device, and the middle of the front side of the through hole strip is fixedly connected with an expansion piece. And the left end of the through hole strip is fixedly connected with a placing box. According to the automatic feeding device for the sealing tank, the sealing tank can be automatically conveyed for canning work, manual operation time is saved, the quantitative feeding amount is adjusted, and the requirement for various canning amounts is met.
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Description

Technical Field

[0001] The utility model relates to the technical field of sauce filling equipment, in particular to a canning device used for papaya sauce processing. Background Art

[0002] The canning device for papaya jam processing is a device for filling papaya jam into cans.

[0003] After searching, the Chinese patent with announcement number: CN202122339617.4 discloses a quantitative canning device for chili sauce, including a hopper, a stirring device is rotatably installed at the lower part of the hopper, a first motor driving the stirring device is installed on the outer side of the hopper, a conveying cylinder is connected to the lower side of the hopper, a spiral conveying blade is arranged in the conveying cylinder, a second motor driving the spiral conveying blade is installed at one end of the conveying cylinder, a discharge box is connected to the discharge end of the conveying cylinder, a discharge pipe is connected to the lower side of the discharge box, a first solenoid valve is arranged at the lower end of the discharge pipe, a liquid storage tank is connected to the lower side of one end of the conveying cylinder, a filter screen is arranged on the side wall of the conveying cylinder corresponding to the liquid storage tank, a liquid guide pipe is connected to the liquid storage tank, and a second solenoid valve is arranged at the lower end of the liquid guide pipe; a weighing device is included, a micro control unit is arranged at the lower side of the liquid storage tank, and the micro control unit is electrically connected to the second motor, the first solenoid valve, the second solenoid valve and the weighing device respectively; the utility model realizes uniform quantitative filling of chili sauce, avoids imbalance in the ratio of liquid sauce and solid sauce, and improves the reliability of filling.

[0004] The working principle of the above patent mentions that "the produced chili sauce is placed in the hopper 1, and the first motor 3 drives the stirring device 2 to rotate and fully stir the chili sauce. The chili sauce in the hopper 1 is introduced into the conveying cylinder 4 through the guide cover 5, and the second motor 7 drives the spiral conveying blade 6 to convey the chili sauce in the conveying cylinder 4 to the discharge box 8, and then fills it into the glass jar through the discharge pipe 9. The liquid part with better fluidity in the chili sauce in the hopper 1 penetrates into the liquid storage tank 12 through the filter screen 11 of the conveying cylinder 4, and then fills it into the glass jar through the liquid guide tube 13, ensuring that the solid chili part and the liquid sauce part are filled in the glass jar at the same time to avoid imbalance in the ratio. . The glass jar is placed on the weighing device 15, and the weighing device 15 detects the weight of the glass jar and the chili sauce inside it. The microcontroller unit 16 receives the weight information sent by the weighing device 15. When the weight reaches the set value, the microcontroller unit 16 controls the second motor to stop working 7, and the first solenoid valve 10 and the second solenoid valve 14 are closed to stop filling. However, in the above document, when sealing and canning the sauce, manual canning operations need to be performed multiple times, which leads to a long downtime of the device, thereby resulting in low canning efficiency. In view of the above problems, a canning device for papaya sauce processing is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a canning device for papaya jam processing, aiming to improve the problem of low canning efficiency caused by manual canning in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A canning device for papaya jam processing, comprising a table frame and a plurality of abutment plates, wherein four support blocks are fixedly connected to the top of the table frame, and the middle parts of the two support blocks on the right side are rotatably connected to the slave rods, the left side of the top of the table frame is fixedly connected to the motor 1, the driving end of the motor 1 is fixedly connected to the main rod, the outside of the main rod and the outside of the slave rod are slidably connected to the belt, the adjacent sides of the two support blocks on the left and right sides are fixedly connected to the through-hole strip, the middle inner wall of the through-hole strip is fixedly connected to the weighing device, the middle part of the front side of the through-hole strip is fixedly connected to the telescope, the left end of the through-hole strip is fixedly connected to the placement box, the left side of the placement box is fixedly connected to the abutment strip, the middle part of the placement box is provided with a through slot, the bottom end of the through slot is fixedly connected to the support piece, the left side of the top of the table frame is fixedly connected to the motor 2, the top of the motor 2 is fixedly connected to the turntable, the rear side of the table frame is fixedly connected to three support strips, the tops of the three support strips are fixedly connected to the conveying pipe, and the top of the conveying pipe is fixedly connected to the blanking assembly;

[0008] As a further description of the above technical solution:

[0009] The material discharge assembly includes two reinforcement blocks, an adjusting box, a material discharge port, a material discharge hopper, a motor three, a coupling shaft, a plurality of slots, a clamping block and a plurality of springs, the bottom end of the reinforcement block is fixedly connected to the outer left side of the conveying pipe, the outer side of the adjusting box is fixedly connected to the bottom end of the reinforcement block, the top end of the material discharge port is fixedly connected to the middle of the bottom end of the adjusting box, the bottom end of the material discharge hopper is fixedly connected to the outer top end of the adjusting box, the motor three is fixedly connected to the middle of the rear end of the adjusting box, the driving end of the motor three is fixedly connected to the rear end of the coupling shaft, the slot is provided on the outer side of the coupling shaft, the clamping block is slidably connected to the inner wall of the slot, and one end of the spring close to the abutment plate is fixedly connected to the side of the clamping block away from the abutment plate;

[0010] As a further description of the above technical solution:

[0011] A hook is fixedly connected to the right side of the front side of the regulating box, a cover is rotatably connected to the left end of the front side of the regulating box, a positioning rod is fixedly connected to the right side of the front side of the cover, a pull rod is rotatably connected to the middle of the positioning rod, a circular ring rod is rotatably connected to the inner wall of the middle of the pull rod, a motor four is fixedly connected to the left end of the conveying pipe, a screw auger is fixedly connected to the driving end of the motor four, and a feeding pipe is fixedly connected to the right side of the bottom end of the conveying pipe;

[0012] As a further description of the above technical solution:

[0013] The front and rear sides of the main rod are rotatably connected to the middle of the two left support blocks, the belt is sleeved on the outside of the weighing device, and the front and rear sides of the belt are slidably connected to the inner wall of the through-hole bar;

[0014] As a further description of the above technical solution:

[0015] The top of the second motor is externally rotatably connected to the inner wall of the through slot, the bottom of the turntable is rotatably connected to the inner wall of the placement box, and the bottom of the abutment bar is slidably connected to the top of the turntable;

[0016] As a further description of the above technical solution:

[0017] The upper and lower sides of the abutment plate are engaged with the inner wall of the regulating box and the inner wall of the slot, and the bottom end of the discharge port is fixedly connected to the left side of the top end of the conveying pipe;

[0018] As a further description of the above technical solution:

[0019] One end of the spring away from the abutment plate is fixedly connected to the inner wall of the clamping groove, and the right side of the circular ring rod is clamped with the middle part of the clamping hook.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the automatic conveying of sealed cans for canning is realized through the cooperation of the support bar, the through slot, the support, the second motor, the turntable and other components, which saves the manual operation time and improves the production efficiency.

[0022] 2. In the utility model, the amount of quantitative discharge can be adjusted through the cooperation of the adjustment box, the discharge port, the discharge hopper, the motor, the connecting shaft and other components to meet the requirements of various canning quantities. The operation is simple and it is convenient for users to clean the inside of the adjustment box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional diagram of a canning device for papaya jam processing proposed by the utility model;

[0024] Figure 2 This is a schematic diagram of the support bar structure of a canning device for papaya jam processing proposed by the utility model;

[0025] Figure 3 This is a schematic diagram of the belt structure of a canning device for papaya jam processing proposed by the utility model;

[0026] Figure 4 This is an exploded view of a through-hole bar for a canning device for papaya jam processing proposed by the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of a delivery pipe for a canning device for papaya jam processing proposed by the utility model;

[0028] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0029] Figure 7 The utility model discloses a schematic diagram of a hook structure of a canning device for papaya jam processing.

[0030] Legend:

[0031] 1. Table frame; 2. Support block; 3. Slave rod; 4. Motor 1; 5. Main rod; 6. Belt; 7. Through-hole strip; 8. Weighing device; 9. Telescopic device; 10. Placement box; 11. Abutment bar; 12. Through slot; 13. Support; 14. Motor 2; 15. Turntable; 16. Support bar; 17. Conveying pipe; 18. Reinforcement block; 19. Adjustment box; 20. Discharge port; 21. Discharge hopper; 22. Motor 3; 23. Coupling shaft; 24. Slot; 25. Clamping block; 26. Spring; 27. Abutment plate; 28. Hook; 29. ​​Cover; 30. Positioning rod; 31. Pull rod; 32. Ring rod; 33. Motor 4; 34. Auger; 35. Discharge pipe. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-Figure 3 The utility model provides an embodiment: a canning device for papaya jam processing, comprising a table frame 1 and a plurality of abutment plates 27, the number of abutment plates 27 is determined by the amount of material being discharged, four support blocks 2 are fixedly connected to the top of the table frame 1, and the middle parts of the two support blocks 2 on the right are rotatably connected to a slave rod 3, a motor 4 is fixedly connected to the left side of the top of the table frame 1, and a main rod 5 is fixedly connected to the driving end of the motor 4, and the support blocks 2 on the left and right sides respectively support the slave rod 3 and the main rod 5 to rotate, and the start of the motor 4 will drive the main rod 5 to rotate, and the outside of the main rod 5 and the outside of the slave rod 3 are slidably connected with a belt 6, and the belt 6 is sleeved on the outside of the slave rod 3 and the main rod 5, and is driven by the main rod 5 to rotate and then pulls the slave rod 3 to rotate, thereby realizing the function of conveying objects.

[0034] A through-hole bar 7 is fixedly connected to the adjacent side of the two support blocks 2 on the left and right sides. The middle of the through-hole bar 7 is hollow. In order to place the sealed cans on both sides, they will fall off during the movement. A weighing device 8 is fixedly connected to the inner wall of the middle part of the through-hole bar 7. The front and rear sides of the outside of the main rod 5 are rotatably connected to the middle of the two support blocks 2 on the left. The belt 6 is sleeved on the outside of the weighing device 8. A telescope 9 is fixedly connected to the middle part of the front side of the through-hole bar 7. The weighing device 8 weighs the weight of the sealed can in real time and transmits data to the telescope 9, so that the telescope 9 shell can be telescoped in real time to separate the sealed cans that have been canned and the sealed cans that have not been canned. The front and rear sides of the belt 6 are slidably connected to the inner wall of the through-hole bar 7, and the belt 6 is engaged on the inner wall of the through-hole bar 7 and slides.

[0035] refer to Figure 3 , Figure 4 The left end of the through-hole strip 7 is fixedly connected with a placement box 10, the left side of the placement box 10 is fixedly connected with a resist strip 11, the right side of the resist strip 11 is fixed to the outer edge opening of the placement box 10, and the middle part of the placement box 10 is suspended in the air. A through slot 12 is opened in the middle part of the placement box 10, and a support 13 is fixedly connected to the bottom end of the through slot 12. A motor 2 14 is fixedly connected to the left side of the top of the table frame 1, and a turntable 15 is fixedly connected to the top of the motor 2 14. The motor 2 14 is started to connect the turntable 15. The turntable 15 is at the top of the inner wall of the placement box 10, and multiple sealed cans can be placed on the top of the turntable 15.

[0036] Three support bars 16 are fixedly connected to the back side of the table frame 1, and the top ends of the three support bars 16 are fixedly connected to a conveying pipe 17, which supports the conveying pipe 17. The top end of the conveying pipe 17 is fixedly connected to a material unloading component, and the material unloading component unloads the material into the conveying pipe 17 for transmission. The top end of the motor 2 14 is rotatably connected to the inner wall of the through groove 12, and the bottom end of the turntable 15 is rotatably connected to the inner wall of the placement box 10. The bottom end of the support bar 11 is slidably connected to the top end of the turntable 15. The motor 2 14 penetrates the placement box 10 and connects to the turntable 15 to drive the turntable 15 to rotate and then the inner wall of the placement box 10 drives the sealed can placed on the top to move and transmit. Compared with the above documents, the turntable 15, the through-hole bar 7 and the belt 6 are used to automatically move the sealed cans on the turntable 15 for mobile canning, instead of manual canning of papaya jam, which speeds up work efficiency.

[0037] refer to Figure 5 , Figure 6The material discharge assembly includes two reinforcement blocks 18, an adjusting box 19, a material discharge port 20, a material discharge hopper 21, a motor 3 22, a connecting shaft 23, a plurality of slots 24, a clamping block 25 and a plurality of springs 26. The bottom end of the reinforcement block 18 is fixedly connected to the left side of the outside of the conveying pipe 17, the outside of the adjusting box 19 is fixedly connected to the bottom end of the reinforcement block 18, the reinforcement block 18 reinforces the support for the adjusting box 19, the top end of the material discharge port 20 is fixedly connected to the middle of the bottom end of the adjusting box 19, the bottom end of the material discharge hopper 21 is fixedly connected to the top end of the adjusting box 19, the bottom end of the material discharge port 20 is fixedly connected to the left side of the top end of the conveying pipe 17, the material discharge hopper 21 discharges the material into the adjusting box 19 and then flows into the material discharge port 20, and then flows from the material discharge port 20 into the conveying pipe 17.

[0038] The motor 3 22 is fixedly connected to the middle of the rear end of the regulating box 19, the driving end of the motor 3 22 is fixedly connected to the rear end of the connecting shaft 23, the slot 24 is provided on the outside of the connecting shaft 23, the motor 3 22 starts to drive the connecting shaft 23 to rotate, the clamping block 25 is slidably connected to the inner wall of the slot 24, the end of the spring 26 close to the abutment plate 27 is fixedly connected to the side of the clamping block 25 away from the abutment plate 27, the elastic force of the spring 26 drives the clamping block 25 to block the opening of the slot 24, and prevents the papaya sauce from remaining on the outside of the connecting shaft 23 The upper and lower sides of the butt plate 27 are engaged with the inner wall of the adjusting box 19 and the inner wall of the card slot 24. The end of the spring 26 away from the butt plate 27 is fixedly connected to the inner wall of the card slot 24. When the number of butt plates 27 needs to be adjusted to adjust the amount of quantitative feeding, it is only necessary to pry the clamping block 25 to open the opening of the card slot 24, insert the butt plate 27, or directly extract the butt plate 27 to adjust it. Compared with the above-mentioned documents, the quantitative amount can be automatically adjusted by adjusting the number of butt plates 27, thereby increasing the choice of canning.

[0039] refer to Figure 7 A hook 28 is fixedly connected to the right side of the front side of the adjusting box 19, and a cover 29 is rotatably connected to the left end of the front side of the adjusting box 19. A positioning rod 30 is fixedly connected to the right side of the front side of the cover 29. The positioning rod 30 positions the position of the pull rod 31. The middle part of the positioning rod 30 is rotatably connected to the pull rod 31, and the middle inner wall of the pull rod 31 is rotatably connected to the ring rod 32. The left end of the conveying pipe 17 is fixedly connected to a motor four 33, and the driving end of the motor four 33 is fixedly connected to a screw dragon 34. A feeding pipe 35 is fixedly connected to the right side of the bottom end of the conveying pipe 17, and the right side of the ring rod 32 is engaged with the middle part of the hook 28. The pull rod 31 is bent to drive the ring rod 32 to rotate so that the ring rod 32 is disengaged from the engagement with the hook 28, thereby opening the cover 29 and removing or inserting the abutment plate 27.

[0040] Working principle: when in use, first place all the sealed jars on the turntable 15 position of the placing box 10, then place the papaya jam into the discharge hopper 21, and then according to the required amount of discharge, bend the pull rod 31 to drive the circular rod 32 to rotate so that the circular rod 32 is disengaged from the engagement with the hook 28, thereby opening the lid 29, and then adjust the number of internal engagements and the number of abutment plates 27 in the slot 24 of the connecting shaft 23 according to the amount of discharge, increase or decrease the spacing between the abutment plates 27, so as to adjust the quantitative discharge amount of the papaya jam, and then close the lid 29 to make the adjustment box 19 in a sealed state, and then start the motor three 22 to drive the connecting shaft 23 to drive the abutment plate 27 to rotate and drive the papaya jam flowing from the discharge hopper 21 to stir while quantitatively discharge the papaya jam through the discharge port 20 and fall into the conveying pipe 17, and then start the motor four 33 to drive the auger 34 to rotate to drive the papaya jam to move from left to right and then fall from the discharge pipe 35.

[0041] When the papaya jam is dropped by the feeding tube 35, the started motor 2 14 will drive the turntable 15 to rotate, and then the inner wall of the placement box 10 cooperates with the abutment bar 11 to allow the sealed cans placed in the placement box 10 to slide along the inner wall of the placement box 10 to the position of the through-hole bar 7 in sequence, and then the started motor 1 4 is driven by the belt 6 driven by the main rod 5 and the slave rod 3 to move slowly and orderly from the right to the left. When the sealed can reaches the bottom of the feeding tube 35, the papaya jam will fall into the sealed can and be quantitatively weighed by the weighing device 8. When it reaches a certain weight, the weighing device 8 will transmit information to the telescopic device 9, so that the telescopic device 9 starts to telescope and no longer blocks the movement of the sealed can, so that the filled sealed cans will continue to move along the surface of the belt 6, and the unfilled sealed cans will be blocked by the telescopic device 9 again for the next canning work.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A canning device for papaya jam processing, comprising a table frame (1) and a plurality of abutment plates (27), characterized in that: The top of the table frame (1) is fixedly connected with four support blocks (2), the middle parts of the two right support blocks (2) are rotatably connected with a slave rod (3), the left side of the top of the table frame (1) is fixedly connected with a motor (4), the driving end of the motor (4) is fixedly connected with a main rod (5), the outside of the main rod (5) and the outside of the slave rod (3) are slidably connected with a belt (6), the adjacent sides of the two support blocks (2) on the left and right sides are fixedly connected with a through hole bar (7), the middle inner wall of the through hole bar (7) is fixedly connected with a weighing device (8), the middle part of the front side of the through hole bar (7) is fixedly connected with a telescopic device (9), and the through hole bar (7) is fixedly connected with a telescopic device (9). The left end of the hole bar (7) is fixedly connected to a placement box (10), the left side of the placement box (10) is fixedly connected to a support bar (11), a through slot (12) is provided in the middle of the placement box (10), the bottom end of the through slot (12) is fixedly connected to a support member (13), the left side of the top end of the table frame (1) is fixedly connected to a second motor (14), the top end of the second motor (14) is fixedly connected to a turntable (15), the rear side of the table frame (1) is fixedly connected to three support bars (16), the top ends of the three support bars (16) are fixedly connected to a conveying pipe (17), and the top end of the conveying pipe (17) is fixedly connected to a material discharge assembly.

2. The canning device for papaya jam processing according to claim 1, characterized in that: The material discharge assembly comprises two reinforcement blocks (18), an adjustment box (19), a material discharge port (20), a material discharge hopper (21), a motor (22), a connecting shaft (23), a plurality of slots (24), a clamping block (25) and a plurality of springs (26); the bottom end of the reinforcement block (18) is fixedly connected to the left side of the outside of the conveying pipe (17); the outside of the adjustment box (19) is fixedly connected to the bottom end of the reinforcement block (18); the top end of the material discharge port (20) is fixedly connected to the middle of the bottom end of the adjustment box (19); The bottom end of the bucket (21) is fixedly connected to the external top end of the regulating box (19), the motor three (22) is fixedly connected to the middle of the rear end of the regulating box (19), the driving end of the motor three (22) is fixedly connected to the rear end of the connecting shaft (23), the slot (24) is arranged outside the connecting shaft (23), the clamping block (25) is slidably connected to the inner wall of the slot (24), and one end of the spring (26) close to the abutment plate (27) is fixedly connected to the side of the clamping block (25) away from the abutment plate (27).

3. The canning device for papaya jam processing according to claim 2, characterized in that: A hook (28) is fixedly connected to the front right side of the regulating box (19), a cover (29) is rotatably connected to the front left end of the regulating box (19), a positioning rod (30) is fixedly connected to the front right side of the cover (29), a pull rod (31) is rotatably connected to the middle of the positioning rod (30), a circular rod (32) is rotatably connected to the middle inner wall of the pull rod (31), a motor four (33) is fixedly connected to the left end of the conveying pipe (17), a auger (34) is fixedly connected to the driving end of the motor four (33), and a discharge pipe (35) is fixedly connected to the right side of the bottom end of the conveying pipe (17).

4. The canning device for papaya jam processing according to claim 1, characterized in that: The front and rear sides of the main rod (5) are rotatably connected to the middle of the two left support blocks (2), the belt (6) is sleeved on the outside of the weighing device (8), and the front and rear sides of the belt (6) are slidably connected to the inner wall of the through-hole bar (7).

5. The canning device for papaya jam processing according to claim 2, characterized in that: The top end of the motor 2 (14) is externally rotatably connected to the inner wall of the through slot (12), the bottom end of the turntable (15) is rotatably connected to the inner wall of the placement box (10), and the bottom end of the support bar (11) is slidably connected to the top end of the turntable (15).

6. The canning device for papaya jam processing according to claim 2, characterized in that: The upper and lower sides of the abutment plate (27) are engaged with the inner wall of the regulating box (19) and the inner wall of the slot (24), and the bottom end of the discharge port (20) is fixedly connected to the left side of the top end of the conveying pipe (17).

7. The canning device for papaya jam processing according to claim 3, characterized in that: One end of the spring (26) away from the abutment plate (27) is fixedly connected to the inner wall of the clamping groove (24), and the right side of the circular rod (32) is engaged with the middle part of the clamping hook (28).