A pre-treatment device for a canned grape production line

Abstract

A pre-treatment device for a canned grape production line, including a brush device, a threshing device is connected to the lower part of the brush device, a branch-removing device is connected to the lower part of the threshing device, and a skin-peeling device is connected to the lower part of the branch-removing device; the skin-peeling device includes a skin-peeling box body, an immersion liquid added with alkali solution corrosion is arranged inside the skin-peeling box body, a feeding pipe is arranged on the upper part of the skin-peeling box body, and a rinsing device is further included. A pit-removing device is connected to the lower part of the rinsing device, a conveyor belt is connected to the lower part of the pit-removing device, one end of the conveyor belt is connected to a hardening immersion device, and an immersion solution added with a hardening agent and a color protection agent is arranged inside the hardening immersion device; a sterilization device is further included for sterilizing the product. In the present invention, the pulp is loosened by brush water washing and threshing in a rotary manner first to reduce the abrasion of the branches on the fruits, and then a drum type stalk-removing machine is used, so that the fruit-breaking rate is greatly reduced. The use of the immersion liquid of the hardening agent and the color protection agent improves the hardening effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of grape canned food production, and particularly relates to a pretreatment device for a grape canned food production line. Background Art

[0002] The food processing industry has developed rapidly with the increasing demand of consumers for healthy and convenient foods. Among them, canned fruits, as a common ready-to-eat product, have also seen continuous progress in their production processes. As a popular product type, the pretreatment process of canned grapes is particularly important because it directly affects the quality and taste of the final product. Pretreatment usually includes multiple steps such as washing, debranching, threshing, and hardening, and each step has an important impact on the quality of the final product. Traditional grape pretreatment methods mostly use manual operations or simple mechanical equipment. Although these methods are simple and easy to implement, they have many deficiencies in practical applications. For example, in the debranching process, traditional debranching methods not only have low efficiency but may also cause damage to the fruit surface, affecting its appearance. For relatively soft grapes such as Kyoho grapes, due to their high juice content, traditional drum-type de-stemmers are likely to cause fruit damage during debranching, and the fruit-breaking rate using this method alone is as high as 30%, seriously affecting the product qualification rate and the final taste.

[0003] In addition, the hardening treatment in grape canned food production is also a key link. The hardening treatment is mainly to improve the texture of grapes. In the pretreatment stage of traditional grape canned food production lines, especially in the hardening treatment, intermittent immersion hardening or no immersion hardening treatment is mostly used, and only by selecting raw materials with a lower maturity can a certain hardness be maintained. The former has low efficiency and it is difficult to ensure that each batch of grapes can obtain a consistent hardening effect; the latter is limited by the selection of raw materials. Although grapes with a lower maturity can maintain good hardness in the short term, their flavor and taste are relatively poor, and they are not conducive to long-term storage. Under the existing canned food sterilization conditions of 84 - 88°C for 15 - 20 minutes, it is easy to cause the general flavor and taste to deteriorate and is not conducive to the hardening effect. Therefore, we propose a pretreatment device for a grape canned food production line. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a pretreatment device for a grape canned food production line. By first using a brush to wash and thresh the grapes and rotating to loosen the pulp, the abrasion of the branches on the fruits is reduced, and then a drum-type de-stemmer is used, greatly reducing the fruit-breaking rate. The use of an immersion solution of a hardening agent and a color protection agent improves the hardening effect.

[0005] The present invention is implemented as follows. A pretreatment device for a grape canning production line includes a brush device. A threshing device is connected to the lower part of the brush device. A branch-removing device is connected to the lower part of the threshing device. A skin-peeling device is connected to the lower part of the branch-removing device. The brush device includes an inverted trapezoidal box body. A first brush roller is rotatably connected to the upper side inside the inverted trapezoidal box body. A second brush roller is rotatably connected to the lower side inside the inverted trapezoidal box body. The first brush roller and the second brush roller can drive the grapes to move inside the inverted trapezoidal box body and rotate to loosen the pulp. The threshing device includes a first box body. A smooth roller and a threshing roller are rotatably connected inside the first box body. When the grapes pass through the gap between the smooth roller and the threshing roller, threshing can be achieved. The branch-removing device includes a first connecting box body. A second box body is connected to the right side of the first connecting box body. An annular separation net is provided inside the second box body. A branch-removing roller is provided inside the annular separation net. The skin-peeling device includes a skin-peeling box body. An immersion liquid added with alkali solution for corrosion is provided inside the skin-peeling box body. A feeding pipe is provided at the upper part of the skin-peeling box body. A rinsing device is also included. A pit-removing device is connected to the lower part of the rinsing device. A conveyor belt is connected to the lower part of the pit-removing device. One end of the conveyor belt is connected to a hardening immersion device. An immersion solution added with a hardening agent and a color protection agent is provided inside the hardening immersion device. A sterilization device is also included for sterilizing the products.

[0006] Optionally, a flip cover is rotatably connected to the right side of the inverted trapezoidal box body. A spraying device is installed on the flip cover. The spraying device includes an inclined nozzle and a longitudinal nozzle. The inclined nozzle and the longitudinal nozzle are connected through a first connecting pipe.

[0007] Optionally, a second connecting pipe for connecting multiple groups of inclined nozzles and longitudinal nozzles is connected to the first connecting pipe. A water distribution pipe is connected to the second connecting pipe. The two ends of the water distribution pipe are respectively connected to a water inlet pipe and an air inlet pipe.

[0008] Optionally, a flanging is connected to the upper part of the inverted trapezoidal box body. A magnet block is embedded in the flanging. The flip cover is an iron-made cover plate. Several first motors are connected to the inverted trapezoidal box body.

[0009] Optionally, two second motors are connected to the first box body. The second motors respectively drive the smooth roller and the threshing roller to rotate.

[0010] Optionally, the hardening agent is calcium ion, and the concentration range of calcium ion is 0.03%-0.2%. The color protection agent is vitamin C, and the dosage range of vitamin C is 0.03%-0.15%.

[0011] Optionally, legs are welded to the lower part of the skin-peeling box body. An outlet is provided at the lower part of the skin-peeling box body. A valve is connected to the outlet.

[0012] Optionally, a third motor is connected to one side of the peeling box body, and the output shaft of the third motor penetrates through the inside of the peeling box body and is welded with a peeling roller.

[0013] Optionally, a second connecting box body for connecting the second box body is welded to the upper part of the peeling box body. A maintenance door is connected to the right side of the second box body, and a fourth motor is connected to the maintenance door.

[0014] Optionally, the output shaft of the fourth motor is in transmission connection with the branch-removing roller. A spiral conveying blade, a threshing blade and a separating rod are welded on the branch-removing roller. A branch outlet is connected to the lower right side of the second box body.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. Through the mutual cooperation of the first brush roller and the second brush roller in the inverted trapezoidal box body of the brush device, the effect of rotating and loosening the pulp of grapes during the water washing process is achieved. This step can not only effectively clean the stains on the surface of grapes, but also reduce the abrasion of the fruits caused by the branches by rotating and loosening the pulp, protect the integrity of the grapes, and thus reduce the fruit breakage rate during the subsequent branch-removing and threshing processes. Finally, the beneficial effects of reducing fruit damage and increasing the finished product rate are achieved.

[0017] 2. After the brush water washing and threshing, the grapes enter the threshing device and pass through the gap between the smooth roller and the threshing roller to achieve the threshing effect. By setting the annular separation net and the branch-removing roller, the effective separation of the grape branches is realized. When the grapes pass through the annular separation net, their branches will be guided to the central area of the separation net. At this time, the spiral conveying blade, the threshing blade and the separating rod on the branch-removing roller will work together to further strip the branches and convey them to the branch outlet. This design not only improves the efficiency of branch-removing, but also effectively separates the branches from the fruits without damaging the fruits due to the design of the spiral conveying blade and the threshing blade. In addition, by driving the branch-removing roller to rotate by the fourth motor, the continuity and stability of the branch-removing process are ensured, and the inconsistencies and low efficiency problems that may occur in manual operation are avoided.

[0018] 3. After rinsing, peeling, and pitting, effective hardening treatment of grapes is achieved by adding calcium ions and vitamin C at specific concentrations in a hardening immersion device. As a hardening agent, calcium ions can increase the hardness of grapes without affecting their original flavor, making the grapes less likely to soften during subsequent processing and storage. Vitamin C, as a color protection agent, helps maintain the bright color of grapes and prevents oxidation and discoloration. By precisely controlling the calcium ion concentration between 0.03% - 0.2% and the vitamin C dosage between 0.03% - 0.15%, not only is the hardening effect ensured, but also the adverse effects caused by excessive addition are avoided. In addition, the combined action of the hardening agent and color protection agent in the immersion liquid not only improves the appearance quality of grape cans but also extends the product shelf life, ultimately achieving the beneficial effects of improving product quality and extending the storage period.

[0019] 4. Low-temperature long-time sterilization (78 - 84°C, 15 - 25 min) is adopted. Low-temperature sterilization is more conducive to maintaining the product flavor. In addition, the overall processing speed of the product is fast, which is conducive to controlling the initial microorganisms in canned products, making low-temperature sterilization possible. Additionally, low-temperature long-time sterilization further improves the calcium ion penetration, avoids meat softening caused by too high temperature, and is beneficial to the hardening effect.

[0020] 5. The processing time is shortened by process adjustment: Normally, it takes 4 - 6 hours to produce grape canned products. Through process adjustment, continuous production only takes 1.5 - 2.5 h. Since the initial value of microorganisms is reduced, the sterilization water temperature can be lowered, and the product medium temperature is controlled to 75°C, which is 3 degrees lower than the normal 78 degrees.

[0021] Through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings, other features and advantages of the present invention will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram from the first perspective provided by the present invention;

[0023] Figure 2 is a schematic diagram from the second perspective provided by the present invention;

[0024] Figure 3 is a schematic diagram of the branch removal device provided by the present invention;

[0025] Figure 4 is a schematic diagram of the inverted trapezoidal box body provided by the present invention;

[0026] Figure 5 is a schematic diagram of the inside of the inverted trapezoidal box body provided by the present invention;

[0027] Figure 6 is a schematic diagram of the spraying device provided by the present invention;

[0028] Figure 7It is a schematic diagram of the annular separation net provided by the present invention;

[0029] Figure 8 It is a schematic diagram of the branch-removing roller provided by the present invention;

[0030] Figure 9 It is a schematic diagram of the hardening soaking device provided by the present invention.

[0031] In the figure: 1, flip cover; 2, spraying device; 21, longitudinal spray head; 22, inclined spray head; 23, first connecting pipe; 24, second connecting pipe; 25, water distribution pipe; 26, water inlet pipe; 27, air inlet pipe; 3, brush device; 31, flanging; 32, magnet block; 33, first brush roller; 34, second brush roller; 35, first motor; 36, inverted trapezoidal box body; 4, threshing device; 41, second motor; 42, first box body; 43, smooth roller; 44, threshing roller; 5, branch-removing device; 51, branch outlet; 52, fourth motor; 53, inspection door; 54, first connecting box body; 55, second box body; 56, annular separation net; 57, branch-removing roller; 58, spiral conveyor blade; 59, threshing blade; 510, separation rod; 6, peeling device; 61, peeling box body; 62, support leg; 63, discharge port; 64, third motor; 65, second connecting box body; 7, feeding pipe; 8, rinsing device; 9, pit-removing device; 10, conveyor belt; 11, sterilization device; 12, hardening soaking device. Detailed implementation manners

[0032] In order to further understand the content, features and effects of the present invention, the following embodiments are cited and described in detail in conjunction with the accompanying drawings.

[0033] Embodiment 1:

[0034] As Figure 1 , 2 , 3, 4, 7, 8, 9 show, a pre-treatment device for a grape can production line provided by an embodiment of the present invention.

[0035] The lower part of the brush device 3 is connected to a threshing device 4, the lower part of the threshing device 4 is connected to a debranching device 5, and the lower part of the debranching device 5 is connected to a hardening and soaking device 12; the brush device 3 includes an inverted trapezoidal box body 36, a first brush roller 33 is rotatably connected to the upper side inside the inverted trapezoidal box body 36, a second brush roller 34 is rotatably connected to the lower side inside the inverted trapezoidal box body 36, and the first brush roller 33 and the second brush roller 34 can drive the grapes to move inside the inverted trapezoidal box body 36 and rotate to loosen the pulp; the threshing device 4 includes a first box body 42, a smooth roller 43 and a threshing roller 44 are rotatably connected inside the first box body 42, and the grapes can play a threshing role when passing through the gap between the smooth roller 43 and the threshing roller 44; the debranching device 5 includes a first connecting box body 54, a second box body 55 is connected to the right side of the first connecting box body 54, an annular separation net 56 is arranged inside the second box body 55, and a debranching roller 57 is arranged inside the annular separation net 56; the peeling device 6 includes a peeling box body 61, a solution added with alkali liquor corrosion is arranged inside the peeling box body 61, and a feeding pipe 7 is arranged on the upper part of the peeling box body 61;

[0036] It further includes a rinsing device 8, the lower part of the rinsing device 8 is connected to a pitting device 9, the lower part of the pitting device 9 is connected to a conveyor belt 10, one end of the conveyor belt 10 is connected to the hardening and soaking device 12, and a soaking solution added with a hardening agent and a color protection agent is arranged inside the hardening and soaking device 12; it further includes a sterilization device 11 for sterilizing the product for 30 minutes of hardening and soaking.

[0037] It should be noted that the sterilization of the prior art: generally, the sterilization conditions are 84-88 degrees, the medium temperature is 78 °C. Due to the high sterilization temperature and short time, the sterilization time is too short, and the high temperature has a great impact on the crispness of the pulp;

[0038] The internal sterilization process of the sterilization device 11 is adjusted: adding calcium in sugar water combined with relatively low temperature and long time sterilization is beneficial to the secondary penetration of calcium ions. The sterilization temperature is 78-84 °C, and the time is 15-25 minutes. The medium temperature of the product is 75 °C, which plays a sterilization role.

[0039] Through the accurately proportioned calcium ions and vitamin C, the texture and color of the grapes can be effectively improved. While ensuring the hardening effect, the beauty and flavor of the grapes are also guaranteed. This formula can not only improve the hardness of the grapes, but also keep their bright color, increasing the market competitiveness of the product.

[0040] The hardening agent is calcium ions, and the concentration range of calcium ions is 0.03%-0.2%. The color protection agent is vitamin C, and the dosage range of vitamin C is 0.03%-0.15%.

[0041] A flanging 31 is connected to the upper part of the inverted trapezoidal box body 36, a magnet block 32 is embedded in the flanging 31, the flip cover 1 is an iron cover plate, and several first motors 35 are connected to the inverted trapezoidal box body 36.

[0042] The design of the magnet block 32 can adsorb the iron plate, and the iron cover plate can be firmly fixed by the magnet block 32 to prevent the flip cover from slipping during the cleaning process; while the first motor 35 is responsible for driving the brush device 3 to operate to ensure the cleaning effect. This design not only facilitates daily operations but also improves the safety and reliability of the equipment.

[0043] Two second motors 41 are connected to the first box body 42, and the second motors 41 drive the light roller 43 and the threshing roller 44 to rotate respectively.

[0044] By setting two independent second motors 41, the speeds of the light roller 43 and the threshing roller 44 can be controlled respectively, ensuring the controllability and efficiency of the threshing process. This independently driven design enables the equipment to adjust the speed according to the different characteristics of the grapes, thus achieving the best threshing effect.

[0045] Legs 62 are welded to the lower part of the peeling box body 61. An outlet 63 is provided at the lower part of the peeling box body 61, and a valve is connected to the outlet 63.

[0046] The design of the legs 62 ensures the stability of the peeling box body 61, while the outlet 63 with a valve facilitates the discharge of the grapes after soaking and can also control the discharge of the soaking liquid for easy recycling. This design not only improves the stability of the equipment but also increases the environmental benefits.

[0047] A third motor 64 is connected to one side of the peeling box body 61, and the output shaft of the third motor 64 penetrates through the inside of the peeling box body 61 and is welded with a peeling drum.

[0048] By driving the stirring blades through the third motor 64, the soaking liquid can be ensured to be evenly distributed, promoting the full absorption of calcium ions and vitamin C and improving the uniformity and effect of hardening. This design enables the grapes to evenly contact the hardening agent and the color protection agent during the soaking process, improving the quality and efficiency of hardening.

[0049] A second connecting box body 65 for connecting the second box body 55 is welded to the upper part of the peeling box body 61. A maintenance door 53 is connected to the right side of the second box body 55, and a fourth motor 52 is connected to the maintenance door 53.

[0050] The design of the maintenance door 53 facilitates regular inspection and maintenance of the equipment to ensure its normal operation; the fourth motor 52 is responsible for driving the branch removing roller 57 to ensure the efficient progress of the branch removing process. This design not only simplifies the maintenance process but also improves the reliability and production efficiency of the equipment.

[0051] The output shaft of the fourth motor 52 is drivingly connected to the branch-removing roller 57. A spiral conveying blade 58, a threshing blade 59 and a separating rod 510 are welded on the branch-removing roller 57. An outlet for branches 51 is connected to the lower right side of the second box body 55.

[0052] This design makes the branch-removing process more efficient. Through the coordinated work of the spiral conveying blade 58, the threshing blade 59 and the separating rod 510, the effective separation of branches and fruits is achieved. At the same time, the design of the outlet for branches 51 facilitates the discharge of branches, ensuring the thoroughness and continuity of branch-removing.

[0053] During use, grapes are placed inside the inverted trapezoidal box body 36. The first brush roller 33 and the second brush roller 34 can drive the grapes to move inside the inverted trapezoidal box body 36 and rotate to loosen the pulp, playing a role in loosening the branches and grapes. After loosening, it is convenient for the next step of threshing, reducing the scratching of the pulp by the branches. Subsequently, the grapes fall into the inside of the threshing device 4. When the grapes pass through the gap between the smooth roller 43 and the threshing roller 44, threshing can be achieved. Subsequently, the branches and grapes enter the inside of the branch-removing device 5. An annular separation net 56 is provided inside the second box body 55. A branch-removing roller 57 is provided inside the annular separation net 56. When the branch-removing roller 57 rotates, it can convey and separate the pulp and branches, playing a processing role. Subsequently, the grapes enter the inside of the peeling box body 61. An alkaline solution for corrosion is added inside the peeling box body 61, and peeling is achieved by driving the peeling drum by the third motor 64. Subsequently, the peeled grapes are fished out manually and poured into the rinsing device 8. After the rinsing device 8 rinses, the grapes enter the pitting device 9. The pitted grapes enter through the valve at the lower part of the pitting device 9 into the conveyor belt 10. One end of the conveyor belt 10 is connected to a hardening and soaking device 12. An immersion solution containing a hardening agent and a color protection agent is provided inside the hardening and soaking device 12, and hardening and soaking are carried out for 30 minutes.

[0054] After the grapes are hardened, they need to be canned, filled with soup, sealed separately, and then enter the sterilization device 11. Specific concentrations of calcium ions and vitamin C are added to the soup, realizing the effective synergistic hardening treatment of the grape pulp during the low-temperature long-time heating process.

[0055] The sterilization device 11 adopts low-temperature long-time sterilization (78 - 84 °C, 15 - 25 min). Low-temperature sterilization is more conducive to maintaining the product flavor. In addition, the overall processing speed of the product is fast (time 1.5 - 2.5 h), which is conducive to controlling the initial microorganisms of canned products and making low-temperature sterilization possible. In addition, low-temperature long-time sterilization further improves the penetration of calcium ions, avoids softening of the meat quality at too high a temperature, and is conducive to the hardening effect. Calcium ions as a hardening agent can increase its hardness without affecting the original flavor of the grapes, making the grapes not easy to soften during subsequent processing and storage; while vitamin C as a color protection agent helps to maintain the bright color of the grapes and prevent oxidation and discoloration.

[0056] Example Two:

[0057] As Figures 1 to 8 shown, a pre-treatment device for a grape canning production line provided by an embodiment of the present invention.

[0058] The lower part of the brush device 3 is connected to a threshing device 4, the lower part of the threshing device 4 is connected to a branch-removing device 5, and the lower part of the branch-removing device 5 is connected to a hardening and soaking device 12; the brush device 3 includes an inverted trapezoidal box body 36, the upper side inside the inverted trapezoidal box body 36 is rotatably connected to a first brush roller 33, the lower side inside the inverted trapezoidal box body 36 is rotatably connected to a second brush roller 34, and the first brush roller 33 and the second brush roller 34 can drive the grapes to move inside the inverted trapezoidal box body 36 and rotate to loosen the pulp; the threshing device 4 includes a first box body 42, and a smooth roller 43 and a threshing roller 44 are rotatably connected inside the first box body 42, and the grapes can play a threshing role when passing through the gap between the smooth roller 43 and the threshing roller 44; the branch-removing device 5 includes a first connecting box body 54, the right side of the first connecting box body 54 is connected to a second box body 55, an annular separation net 56 is arranged inside the second box body 55, and a branch-removing roller 57 is arranged inside the annular separation net 56; the peeling device 6 includes a peeling box body 61, a solution added with alkali solution corrosion is arranged inside the peeling box body 61, and a feeding pipe 7 is arranged on the upper part of the peeling box body 61; further includes a rinsing device 8, the lower part of the rinsing device 8 is connected to a core-removing device 9, the lower part of the core-removing device 9 is connected to a conveyor belt 10, one end of the conveyor belt 10 is connected to a hardening and soaking device 12, and a soaking solution added with a hardening agent and a color protection agent is arranged inside the hardening and soaking device 12; further includes a sterilization device 11 for product sterilization.

[0059] The right side of the inverted trapezoidal box body 36 is rotatably connected to a flip cover 1, and a spraying device 2 is installed on the flip cover 1. The spraying device 2 includes an inclined nozzle 22 and a longitudinal nozzle 21, and the inclined nozzle 22 and the longitudinal nozzle 21 are connected by a first connecting pipe 23.

[0060] This design ensures that the grapes can be comprehensively covered by spraying during the cleaning process. The inclined nozzle 22 can effectively remove the impurities attached to the surface of the grapes, while the longitudinal nozzle 21 can penetrate into the gaps between the grapes for cleaning, improving the cleaning efficiency and thoroughness.

[0061] A second connecting pipe 24 for connecting multiple groups of inclined nozzles 22 and longitudinal nozzles 21 is connected to the first connecting pipe 23, a water distribution pipe 25 is connected to the second connecting pipe 24, and a water inlet pipe 26 and an air inlet pipe 27 are respectively connected to both ends of the water distribution pipe 25.

[0062] With such an arrangement, the spray system can not only provide stable and uniform water flow, but also introduce gas to produce a spray effect, enhancing the cleaning ability. At the same time, the design of multiple groups of nozzles ensures the uniform distribution of water flow, further improving the cleaning effect.

[0063] In this embodiment, a spray device 2 is added on the basis of the first embodiment. Through the diagonal nozzles 22 and longitudinal nozzles 21 installed on the flip cover 1, it plays a role in spraying water at multiple angles, and can perform spray cleaning while the grapes enter the inverted trapezoidal box body 36 for the operation of loosening the pulp. Both ends of the water distribution pipe 25 are respectively connected with a water inlet pipe 26 and an air inlet pipe 27, which can be connected to tap water and compressed air at the same time, playing a role in increasing the spraying pressure and making the cleaning more thorough.

[0064] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for a canned grape production line, comprising a brush device (3), characterized in that: The lower part of the brush device (3) is connected to a threshing device (4), the lower part of the threshing device (4) is connected to a debranching device (5), and the lower part of the debranching device (5) is connected to a peeling device (6); The brush device (3) comprises an inverted trapezoidal box (36), the upper side of the inner part of the inverted trapezoidal box (36) is rotatably connected to a first brush roller (33), and the lower side of the inner part of the inverted trapezoidal box (36) is rotatably connected to a second brush roller (34), the first brush roller (33) and the second brush roller (34) can drive the grapes to move in the inverted trapezoidal box (36) and rotate to loosen the pulp; The threshing device (4) comprises a first housing (42), wherein a smooth roller (43) and a threshing roller (44) are rotatably connected inside the first housing (42), and the grapes can be threshed when passing through the gap between the smooth roller (43) and the threshing roller (44); The debranching device (5) comprises a first connecting box (54), the right side of which is connected to a second box (55), an annular separation net (56) is provided inside the second box (55), and a debranching roller (57) is provided inside the annular separation net (56); The peeling device (6) comprises a peeling box (61), the interior of the peeling box (61) is provided with a solution added with alkali corrosion, and the upper part of the peeling box (61) is provided with a feeding pipe (7); The invention also comprises a rinsing device (8), the lower part of which is connected to a core removal device (9), the lower part of which is connected to a conveyor belt (10), one end of which is connected to a hardening and soaking device (12), the interior of which is provided with a soaking solution to which a hardener and a color retaining agent are added; and a sterilizing device (11) for sterilizing the product.

2. A pretreatment device for a canned grape production line according to claim 1, characterized in that: The right side of the inverted trapezoidal box (36) is rotatably connected to a flip cover (1), and a spray device (2) is installed on the flip cover (1). The spray device (2) comprises an oblique spray head (22) and a longitudinal spray head (21), and the oblique spray head (22) and the longitudinal spray head (21) are connected via a first connecting pipe (23).

3. The pretreatment device for a canned grape production line according to claim 2, characterized in that: The first connecting pipe (23) is connected to a second connecting pipe (24) for connecting a plurality of groups of oblique nozzles (22) and longitudinal nozzles (21); the second connecting pipe (24) is connected to a water distribution pipe (25); and the two ends of the water distribution pipe (25) are respectively connected to a water inlet pipe (26) and an air inlet pipe (27).

4. The pretreatment device for a canned grape production line according to claim 2, characterized in that: The upper part of the inverted trapezoidal box body (36) is connected to a flange (31), a magnet block (32) is embedded on the flange (31), the flip cover (1) is an iron cover plate, and the inverted trapezoidal box body (36) is connected to a plurality of first motors (35).

5. The pretreatment device for a canned grape production line according to claim 1, characterized in that: The first box body (42) is connected to two second motors (41), and the second motors (41) respectively drive the smooth roller (43) and the threshing roller (44) to rotate.

6. The pretreatment device for a canned grape production line according to claim 1, characterized in that: The hardener is calcium ion, and the concentration of calcium ion is in the range of 0.03%-0.2%. The color protecting agent is vitamin C, and the dosage of vitamin C is in the range of 0.03%-0.15%.

7. The pretreatment device for a canned grape production line according to claim 1, characterized in that: A leg (62) is welded to the lower part of the peeling box (61), and a discharge port (63) is provided at the lower part of the peeling box (61), and a valve is connected to the discharge port (63).

8. The pretreatment device for a canned grape production line according to claim 1, characterized in that: A third motor (64) is connected to one side of the peeling box (61), and an output shaft of the third motor (64) passes through the interior of the peeling box (61) and is welded with a peeling roller.

9. The pretreatment device for a canned grape production line according to claim 1, characterized in that: A second connecting box (65) for connecting to a second box (55) is welded to the upper part of the peeling box (61); an inspection door (53) is connected to the right side of the second box (55); and a fourth motor (52) is connected to the inspection door (53).

10. The pretreatment device for canned grape production line according to claim 9, characterized in that: The output shaft of the fourth motor (52) is drivingly connected to a debranching roller (57), a spiral conveying blade (58), a threshing blade (59) and a separation rod (510) are welded to the debranching roller (57), and a branch outlet (51) is connected to the lower right side of the second box body (55).

Images