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CN-121970907-A - Low-temperature drying collaborative sterilization treatment device and process

CN121970907ACN 121970907 ACN121970907 ACN 121970907ACN-121970907-A

Abstract

The invention discloses a low-temperature drying collaborative sterilization treatment device and a low-temperature drying collaborative sterilization treatment process, which belong to the technical field of dried fruit processing and comprise a drying box body, a box door and a supporting plate arranged in the drying box body, wherein a material frame is placed on the supporting plate and comprises rectangular frame plates, vertical grooves are uniformly formed in the two side walls of the rectangular frame plates, supporting rods are respectively penetrated in the vertical grooves between the two sides of the rectangular frame plates, and the supporting rods vertically slide in the vertical grooves. According to the invention, the mounting plates are respectively arranged at the top and the bottom of the supporting plate, the ultraviolet sterilizing lamps are oppositely arranged on the mounting plates, and the mounting plates are fixedly connected with the vertical plates, so that the material frame can be controlled to reciprocate by the reciprocating mechanism in the process of being put into the drying box body for drying, the surface of the material frame can be irradiated from the upper direction and the lower direction simultaneously, the sterilization is carried out while the drying is carried out, the pre-sterilization station is not required to be additionally arranged, the production flow is shortened, and the timeliness of a sterilization link of dried fruits is ensured.

Inventors

  • Lin Gaichun
  • LIANG YAN
  • YUAN HEJIN
  • HUANG YUEHUA

Assignees

  • 福建东方食品集团有限公司

Dates

Publication Date
20260505
Application Date
20251217

Claims (10)

  1. 1. The low-temperature drying collaborative sterilization treatment device comprises a drying box body (1), a box door (2) and a supporting plate (3) arranged in the drying box body (1); The method is characterized in that: The material frame is placed on the supporting plate (3), the material frame comprises a rectangular frame plate (6), vertical grooves (7) are uniformly formed in two side walls of the rectangular frame plate (6), supporting rods (8) are respectively arranged in the vertical grooves (7) between two sides of the rectangular frame plate (6) in a penetrating mode, the supporting rods (8) vertically slide in the vertical grooves (7), reset springs (9) are respectively arranged between two ends of the supporting rods (8) and the bottoms of the vertical grooves (7), strip-shaped grooves (10) communicated with the tops of the vertical grooves (7) are respectively formed in the side edges of the rectangular frame plate (6), and the end portions of the supporting rods (8) are respectively extended to the inner bottoms of the strip-shaped grooves (10); both sides of the interior of the drying box body (1) are provided with vertical plates (11) in a sliding manner along the length direction of the supporting plate (3), one side, close to the material frame, of each vertical plate (11) is provided with a cylindrical pressing block (13), and each cylindrical pressing block (13) is matched with the corresponding strip-shaped groove (10); the vertical plates (11) are provided with through holes (12) matched with the vertical plates (11) along the length direction, and the vertical plates (11) vertically penetrate through the inside of the through holes (12); The top and the bottom of the supporting plate (3) are respectively provided with a mounting plate (4), the opposite side surfaces of the two groups of mounting plates (4) are uniformly provided with ultraviolet sterilization lamps (5), and the end parts of the mounting plates (4) are fixedly connected with a vertical plate (11); the inner bottom of the drying box body (1) is provided with a reciprocating mechanism (14) for driving the vertical plate (11) to reciprocate along the length direction of the supporting plate (3).
  2. 2. The low-temperature drying collaborative sterilization treatment device according to claim 1 is characterized in that the surfaces of the supporting plates (3) are provided with stepped grooves (301), and the rectangular frame plates (6) slide in the stepped grooves (301) and are attached to the outer sides of the stepped grooves (301).
  3. 3. The low-temperature drying collaborative sterilization treatment device according to claim 1, wherein the side of the mounting plate (4) close to the rectangular frame plate (6) is provided with a shading strip (401) along the length direction, and the shading strip (401) is attached to the surface of the rectangular frame plate (6).
  4. 4. The low-temperature drying collaborative sterilization treatment device according to claim 1 is characterized in that annular grooves (801) are formed in two ends of each supporting rod (8), positioning blocks (802) are slidably arranged in the annular grooves (801), and the top ends of the positioning blocks (802) are fixedly connected with the inner tops of the vertical grooves (7).
  5. 5. The low-temperature drying collaborative sterilization treatment device according to claim 1, wherein the reciprocating mechanism (14) comprises a sliding groove (1401) arranged at the bottom of the drying box body (1), a motor (1404) is arranged at the end part of the sliding groove (1401), a reciprocating screw rod (1405) is connected to the output end of the motor (1404), a sliding block (1402) matched with the reciprocating screw rod (1405) is connected to the sliding groove (1401) in a sliding manner, a transverse plate (1403) is connected to the top of the sliding block (1402), and the transverse plate (1403) is fixedly connected with the bottom of the vertical plate (11).
  6. 6. The device for collaborative sterilization according to claim 5, wherein a cover plate (1406) is provided on the top of the chute (1401), a fruit residue collecting tank (1407) is provided on both ends of the top of the cover plate (1406), and a cleaning assembly is provided between the two sets of vertical plates (11) for pushing the fallen fruit residue into the fruit residue collecting tank (1407).
  7. 7. The device of claim 6, wherein the cleaning assembly comprises guide grooves (1408) formed in the bottom ends of the vertical plates (11), scraping plates (1409) are arranged between the guide grooves (1408) in the bottom ends of the two groups of vertical plates (11), the scraping plates (1409) vertically slide in the guide grooves (1408) and are attached to the top of the cover plate (1406), and an extrusion spring (1410) is connected between the top of the scraping plates (1409) and the inner wall of the guide grooves (1408).
  8. 8. The low-temperature drying collaborative sterilization treatment device according to claim 1 is characterized in that the wavelength range of the ultraviolet sterilization lamp (5) is 200-280nm, and a transparent protective cover is arranged outside the ultraviolet sterilization lamp (5).
  9. 9. The low-temperature drying collaborative sterilization treatment device according to claim 1 is characterized in that the shapes of the supporting rod (8) and the cylindrical pressing block (13) are cylindrical, and the outer sides of the supporting rod (8) and the cylindrical pressing block (13) are coated with wear-resistant coatings.
  10. 10. A low-temperature drying cooperative sterilization treatment process based on the low-temperature drying cooperative sterilization treatment device according to any one of claims 1 to 9, characterized by comprising the following steps: Step 1, opening a box door (2), uniformly spreading dried fruits to be processed on a supporting rod (8) of a material frame, and ensuring that the dried fruits are not overlapped and cover the surface of the supporting rod (8); Step 2, pushing the material frame to slide to a preset position inside the drying box body (1) along a stepped groove (301) of the supporting plate (3), enabling the material frame to be tightly attached to the outer side of the stepped groove (301), and closing the box door (2); Starting an ultraviolet sterilization lamp (5), simultaneously starting a low-temperature drying function of a drying box body (1), starting preset drying parameters, then starting a motor (1404) of a reciprocating mechanism (14), driving a reciprocating screw rod (1405) to rotate by the motor (1404), driving a sliding block (1402), a vertical plate (11) and the ultraviolet sterilization lamp (5) to reciprocate along the length direction of a supporting plate (3), embedding a cylindrical pressing block (13) on the vertical plate (11) into a strip-shaped groove (10) and periodically pressing down a supporting rod (8), enabling the supporting rod (8) to move downwards along the vertical groove (7) and compress a reset spring (9), completely separating dried fruits from the supporting rod (8), and continuously and three-dimensionally irradiating and sterilizing dried fruits by the ultraviolet sterilization lamp (5) from the upper side and the lower side of a material frame; Step 4, in the drying process, a scraping plate (1409) of the cleaning assembly always clings to the surface of the cover plate (1406) under the elastic action of an extrusion spring (1410), and the pomace falling from the cover plate (1406) is pushed into a pomace collecting groove (1407) at two ends along with the reciprocating movement of the vertical plate (11); and 5, after the drying period is finished, sequentially closing the drying function of the drying box body (1), the reciprocating mechanism (14) and the ultraviolet sterilization lamp (5), standing until the internal temperature of the equipment is reduced to the room temperature, opening the box door (2) to take out the material frame, and finishing the low-temperature drying collaborative sterilization treatment of the dried fruits.

Description

Low-temperature drying collaborative sterilization treatment device and process Technical Field The invention relates to a sterilization treatment device, in particular to a low-temperature drying cooperative sterilization treatment device, and also relates to a sterilization treatment process, in particular to a low-temperature drying cooperative sterilization treatment process, belonging to the technical field of dried fruit processing. Background In the field of dried fruit processing, low-temperature drying can keep the nutritional ingredients, natural flavor and appearance of materials to the greatest extent, so that the dried fruit becomes an industry core processing technology. However, the existing low-temperature dryer is generally only focused on the function of removing water, and a synergistic sterilization module is not integrated, so that dried fruits are easily polluted by microorganisms such as bacteria and mold before and after drying, and the quality guarantee period and the edible safety of the products are directly influenced. In order to improve the current situation, a pre-sterilization scheme before feeding is adopted in part of production scenes, namely, the material frame bearing the dried fruits is transferred to an ultraviolet irradiation area, and the material is pre-sterilized by utilizing ultraviolet rays. However, the technology has significant technical defects: The method is characterized in that the bottom of the dried fruit is always in contact with the net surface of a material frame in the ultraviolet pre-sterilization stage and the subsequent low-temperature drying process, on one hand, an ultraviolet irradiation path is blocked by the bottom of the net frame, a local area where the dried fruit contacts with the net frame can not receive effective ultraviolet dose to form a microorganism residual dead angle, so that sterilization is incomplete and the food sanitary safety standard is difficult to meet, on the other hand, the net frame forms physical shielding on the bottom of the dried fruit, so that heat transfer of the area is blocked, air circulation is not smooth, the whole drying period is prolonged, the deviation of the moisture content of each area of the dried fruit is also caused to be large, the problem of partial insufficient drying or excessive drying occurs, and the consistency of the product quality is seriously influenced. Therefore, a low-temperature drying collaborative sterilization treatment device and a low-temperature drying collaborative sterilization treatment process are designed to optimize the problems. Disclosure of Invention The invention mainly aims to provide a low-temperature drying collaborative sterilization treatment device and a low-temperature drying collaborative sterilization treatment process, which are characterized in that mounting plates are respectively arranged at the top and the bottom of a supporting plate, ultraviolet sterilization lamps are oppositely arranged on the mounting plates, the mounting plates are fixedly connected with vertical plates, so that a material frame can be controlled to reciprocate by a reciprocating mechanism in the process of putting the material frame into a drying box body for drying, the surface of the material frame can be irradiated from the upper direction and the lower direction simultaneously, sterilization is carried out while drying, a pre-sterilization station is not required to be additionally arranged, the production flow is shortened, the timeliness of a sterilization link of dried fruits is ensured, the material frame is matched with a cylindrical pressing block at the side edge of the vertical plates through a novel material frame structure consisting of rectangular frame plates, vertical grooves, supporting rods, reset springs and strip-shaped grooves, and when the reciprocating mechanism controls the vertical plates to move, the cylindrical pressing block slides along the strip-shaped groove and periodically presses down the supporting rod to realize dynamic separation of the dried fruits and the supporting rod, thoroughly eliminates the ultraviolet irradiation blind area caused by shielding of the bottom of the traditional material frame, and solves the problems of local heat accumulation and air flow blocking caused by the traditional material frame supporting structure, ensures that the whole area of the surface of the dried fruits is covered by ultraviolet rays, effectively reduces the residual risk of microorganisms, ensures the edible safety of the dried fruits, simultaneously avoids the water retention of the bottom of the dried fruits caused by long-term contact with the supporting structure, shortens the whole drying period, remarkably improves the drying efficiency, sets the cover plate at the bottom of the drying box body, can effectively prevent the pomace generated in the processing process of the dried fruits from entering the chute, avoids mechanism clamping stagnati