Continuous jet sterilization device for raisins

Abstract

The utility model relates to the technical field of sterilization equipment, in particular to a continuous jet flow sterilization device for raisins. According to the specific technical scheme, the continuous jet flow sterilization device for the raisins comprises a machine body, a first pressure equalizing air box and a second pressure equalizing air box are arranged on the two sides of the machine body, a conveying mechanism is arranged in the machine body, and the machine body is communicated with the first pressure equalizing air box and the second pressure equalizing air box. The first pressure equalizing air box and the second pressure equalizing air box are each internally provided with an axial flow fan, the bottom of the machine body communicates with a sterilization mechanism through an air return pipe, and an outlet of the sterilization mechanism communicates with the top of the machine body. The utility model solves the problems in the prior art that the sterilization cost is high, the personnel hazard is caused, the material loss is caused and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of sterilization equipment, in particular to a continuous jet sterilization device for raisins. Background Art

[0002] Grapes are seasonal fruits. When the main production areas produce in a concentrated manner, they are mainly preserved as primary products for brewing and drying. For dried raisins, they are mainly used as ready-to-eat foods in China, and usually used as food processing raw materials abroad. Due to the non-uniformity of food hygiene specifications in domestic production processes and storage environments, the hygiene level of raisins is relatively poor, and the state of food safety urgently needs to be solved. Existing raisin sterilization equipment includes cold sterilization methods such as microwave, irradiation, and ultraviolet, as well as heat sterilization methods such as steam, hot air, and pasteurization, etc. However, each has different problems, resulting in high sterilization costs, accompanied by personnel hazards and material losses, etc. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the utility model provides a continuous jet sterilization device for raisins, which solves the problems of high sterilization cost, accompanied by personnel hazards and material losses in the prior art.

[0004] To achieve the above object, the utility model is realized through the following technical solutions:

[0005] The utility model discloses a continuous jet sterilization device for raisins, including a fuselage. On both sides of the fuselage, a first equalizing air box and a second equalizing air box are provided. Inside the fuselage, a conveying mechanism is provided. The fuselage is communicated with the first and second equalizing air boxes respectively. Axial flow fans are respectively arranged inside the first and second equalizing air boxes. The bottom of the fuselage is connected with a sterilization mechanism through a return air pipe, and the outlet of the sterilization mechanism is communicated with the top of the fuselage.

[0006] Preferably, air ducts are respectively arranged on the surfaces of the fuselage in contact with the first and second equalizing air boxes, and the air ducts are respectively communicated with the first and second equalizing air boxes.

[0007] Preferably, the conveying mechanism includes a driving roller and a driven roller. A metal mesh belt is sleeved on the driving roller and the driven roller. The conveying mechanism is provided with multiple layers, so that the conveying path of the material is in an S shape; a material baffle is arranged on the conveying mechanism, and the material baffle is arranged on the conveying mechanism below the discharging end of the upper layer of the conveying mechanism.

[0008] Preferably, a feed hopper is arranged on the top of the fuselage. A feed airtight device is arranged inside the feed hopper. A limit sealing plate is arranged at the bottom of the feed hopper, and the bottom end of the limit sealing plate is arranged close to the conveying mechanism.

[0009] Preferably, a discharge hopper is provided on the side wall of the fuselage. A discharge airtight device is provided in the discharge hopper. One end of the conveying mechanism passes through the fuselage and extends into the discharge hopper.

[0010] Preferably, the inlet airtight device and the discharge airtight device have the same structure, including bearing seats respectively fixed in the inlet hopper and the discharge hopper. A wind vane type baffle is rotatably connected to the bearing seats.

[0011] Preferably, the axial flow fan is arranged below the air duct. Below the axial flow fan, through holes communicating with the first and second equalizing air boxes are provided on the fuselage.

[0012] Preferably, the sterilization mechanism includes a mixing box communicated with the return air duct. The mixing box is connected with a sterilization source. The mixing box is communicated with the heating chamber. The heating chamber is connected to the air supply duct through a centrifugal fan. The other end of the air supply duct is connected with a jet air box. The jet air box is communicated with the top of the fuselage and the outlet is arranged towards the conveying mechanism.

[0013] Preferably, the sterilization source includes a sterilization pipe. The sterilization pipe is connected with a water storage tank. The water storage tank is communicated with the mixing box through a pipeline. A variable frequency pressure water pump is provided on the pipeline. One end of the pipeline extending into the mixing box is provided with a universal nozzle.

[0014] Preferably, an air equalizing plate is arranged above the conveying mechanism in the fuselage. The air equalizing plate is arranged corresponding to the jet air box.

[0015] The utility model has the following beneficial effects:

[0016] The utility model is provided with a first and a second pressure equalizing air box on both sides of the fuselage, an axial flow fan is arranged in the first and second pressure equalizing air boxes, a multi-layer conveying mechanism is arranged in the fuselage, the fuselage and the first and second pressure equalizing air boxes are communicated through an air duct, and the air flow sucked by the negative pressure generated by the axial flow fan forms a small circulation on both sides inside the fuselage to supplement the wind speed of the multi-layer materials. The bottom of the fuselage is connected to a mixing box through a return air duct, the mixing box is connected to a heating chamber, the heating chamber is connected to a supply air duct through a centrifugal fan, and the supply air duct is connected to the top of the fuselage through a jet air box. At the same time, a sterilization source is connected to the mixing box, the sterilized water source is stored in a water storage tank through a flow-through sterilization pipe, and a variable frequency pressure water pump transports the water in the water storage tank to a universal nozzle according to the system setting data at different pressures and flow rates. The fine mist with different pressures and flow rates generated by the universal nozzle is mixed with the air flow flowing into the return air duct in the mixing box, and the fine mist air flow is heated in the heating chamber, pressurized by the centrifugal fan and then transported to the top of the fuselage through the supply air duct. The high-temperature and high-pressure mist after heating and pressurization is evenly sprayed on the surface of the material after being accelerated by the air distribution plate. In the utility model, the internal and external circulation structure enables the materials inside the fuselage to have both high wind speed inside and the supplement of humidification and heating outside, reducing the overall external circulation volume of the air flow and the size of the external wind mechanism. At the same time, the whole sterilization process is realized inside the fuselage, avoiding the hygiene problems caused by the exposure of the materials outside. At the same time, the problems of high sterilization cost, accompanied by personnel hazards and material loss in the prior art are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is Figure 1 the view in the A-A direction of

[0019] Figure 3 is a schematic structural diagram of the sterilization source;

[0020] In the figure: fuselage 1, driving roller 2, driven roller 3, metal mesh belt 4, feed hopper 5, bearing seat 6, limit sealing plate 7, material baffle 8, discharge hopper 9, wind blade type baffle 10, first pressure equalizing air box 11, second pressure equalizing air box 12, air duct 13, pipeline 14, axial flow fan 15, material 16, sterilization pipe 17, water storage tank 18, variable frequency pressure water pump 19, jet air box 20, air distribution plate 21, return air duct 22, universal nozzle 23, mixing box 24, heating chamber 25, centrifugal fan 26, supply air duct 27, heat preservation layer 28, through hole 29. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Unless otherwise specified, the technical means used in the implementation examples are conventional means well known to those skilled in the art.

[0023] Referring to Figures 1 - 3 , the present utility model discloses a continuous jet sterilization device for raisins, including a fuselage 1. First and second equalizing air boxes 11 and 12 are arranged on both sides of the fuselage 1. A conveying mechanism is arranged inside the fuselage 1. An air duct 13 is arranged on the fuselage 1, and the fuselage communicates with the first and second equalizing air boxes 11 and 12 respectively through the air duct 13. Axial flow fans 15 are respectively arranged inside the first and second equalizing air boxes 11 and 12. The bottom of the fuselage 1 is connected to a sterilization mechanism through a return air duct 22, and the outlet of the sterilization mechanism is connected to the top of the fuselage 1. It should be noted that: the first and second equalizing air boxes can be arranged as independent boxes on both sides of the fuselage. The air duct 13 is arranged on the contact surface between the fuselage 1 and the first and second equalizing air boxes 11 and 12. A partition can also be arranged inside the fuselage, and the air duct is arranged on the partition. The two side areas inside the fuselage are divided into the first and second equalizing air boxes by the partition, and the conveying mechanism is arranged in the area between the first and second equalizing air boxes. For the arranged air duct, it can be an integral channel or a through hole to make the first and second equalizing air boxes correspond to the conveying mechanism. When there are multiple conveying mechanisms, multiple air ducts can also be arranged, corresponding to the conveying mechanisms separately one by one. The arranged axial flow fans 15 suck the air below and press it upward into the first and second equalizing air boxes 11 and 12, and the air is evenly sent to the surface of the material 16 through the layer air duct 13.

[0024] Furthermore, the conveying mechanism includes a driving roller 2 and a driven roller 3. A metal mesh belt 4 is sleeved on the driving roller 2 and the driven roller 3. The conveying mechanism is arranged in multiple layers, so that the conveying path of the material 16 is in an S shape. It should be noted that: the conveying mechanisms can be arranged in parallel and are offset at both ends, so that the conveying path of the material flow is in an S shape or a snake shape to improve the sterilization efficiency of the material. At the same time, the multiple arranged conveying mechanisms are connected through forward and reverse conveying to form continuous operation of the material.

[0025] Furthermore, the outside of the fuselage is wrapped with a heat insulation layer 28. When the first and second equalizing air boxes are independent boxes, heat insulation layers are also arranged outside the first and second equalizing air boxes.

[0026] Further, a material baffle 8 is provided on the conveying mechanism. The material baffle 8 is arranged on the conveying mechanism below the discharging end of the upper-layer conveying mechanism, so as to play a guiding role when the material is conveyed to the lower conveying mechanism and prevent the material from spilling.

[0027] Further, a feed hopper 5 is provided at the top of the fuselage 1. A feed airtight device is arranged in the feed hopper 5. A limit sealing plate 7 is provided at the bottom of the feed hopper 5. The bottom end of the limit sealing plate 7 is arranged close to the conveying mechanism. Specifically, when the conveying mechanism is multi-layered, the limit sealing plate is close to the belt surface of the metal mesh belt of the uppermost conveying mechanism, so as to prevent the material from splashing when it falls onto the metal mesh belt. The limit sealing plate can be cylindrical, and a notch is provided on the side facing the metal mesh belt, which is convenient for the material to fall onto the conveying mechanism. Through the transportation of the conveying mechanism, the material is laid on this conveying mechanism and conveyed to the next conveying mechanism.

[0028] Further, a discharge hopper 9 is provided on the side wall of the fuselage 1. A discharge airtight device is arranged in the discharge hopper 9. One end of the conveying mechanism passes through the fuselage 1 and extends into the discharge hopper 9. Specifically, when the conveying mechanism is multi-layered, one end of the lowermost conveying mechanism extends into the discharge hopper. Of course, in order to prevent the material from being directly exposed to the air, the discharge port can be arranged in a box with an opening at the bottom, and one end of the conveying mechanism extends into the box.

[0029] Furthermore, the feed airtight device and the discharge airtight device have the same structure, including bearing seats 6 respectively fixed in the feed hopper 5 and the discharge hopper 9. A wind vane type baffle 10 is rotatably connected to the bearing seats 6. The wind vane type baffle 10 includes a rotating shaft fixed to the bearing seat. Vanes are arranged on the side wall of the rotating shaft. The vanes are arranged along the axial direction of the rotating shaft. The wind vane type baffle 10 is driven by a motor to rotate, so as to open and close the feed hopper and the discharge hopper.

[0030] Furthermore, the axial flow fan 15 is arranged below the air duct 13. Below the axial flow fan 15, through holes 29 communicating with the first and second equalizing air boxes 11 and 12 are provided on the fuselage 1.

[0031] Further, the sterilization mechanism includes a mixing box 24 communicated with the return air duct 22. The mixing box is arranged outside the fuselage. The mixing box 24 is connected with a sterilization source. The mixing box 24 is communicated with a heating chamber 25. The heating chamber 25 is connected to a supply air duct 27 through a centrifugal fan 26. The other end of the supply air duct 27 is connected with a jet air box 20. The jet air box 20 is communicated with the top of the fuselage 1, and the outlet is arranged towards the conveying mechanism. It should be noted that: the heating chamber can be heated by electric heating wires. The jet air box is used to balance the pressure of the gas conveyed from the supply air duct to the top of the fuselage.

[0032] Further, the sterilization source includes a sterilization pipe 17, which is connected to a water storage tank 18. The sterilization pipe is a flow-through sterilization pipe, and the sterilized water source is stored in the food-grade stainless steel water storage tank 18. The water storage tank 18 is communicated with a mixing box 24 through a pipeline 14. A variable-frequency pressure water pump 19 is arranged on the pipeline 14, and a universal nozzle 23 is arranged at one end of the pipeline 14 extending into the mixing box 24.

[0033] Further, an air distribution plate 21 is arranged above the conveying mechanism inside the fuselage 1, and the air distribution plate 21 is correspondingly arranged with a jet air box 20. It should be noted that: the air distribution plate is provided with holes, so that the air flow of the jet air box is sent to the conveying mechanism through the air distribution plate. According to needs, baffles can be arranged around the air distribution plate to prevent the gas sent to the air distribution plate from overflowing from the jet air box 20 and also make the gas flow more concentrated. Of course, the corresponding effect can also be achieved without arranging baffles.

[0034] When the utility model is in use, the axial-flow fan 15 sucks the air below and presses it upward into the first and second pressure equalizing air boxes 11 and 12, and the air is evenly sent to the surface of the material 16 through the air duct 13.

[0035] The sterilization source arranged outside the fuselage 1 is equipped with a flow-through sterilization pipe 17, and the sterilized water source is stored in the food-grade stainless steel water storage tank 18. The variable-frequency pressure water pump 19 transports the water in the water storage tank 18 to the universal nozzle 23 according to different pressures and flow rates according to the system setting data. The fine mist with different pressures and flow rates generated by the universal nozzle 23 is mixed with the air flow flowing into the mixing box 24 from the return air duct 22 inside the fuselage. The fine mist air flow is heated in the heating chamber 25, pressurized by the centrifugal fan 26, and then transported to the top of the fuselage through the air supply duct 27. After the pressure of the high-temperature and high-pressure mist after heating and pressurization is balanced in the jet air box 20 at the top of the fuselage 1, it is evenly sprayed on the surface of the material 16 from the air distribution plate 21 after accelerating; the temperature rise inside the fuselage causes the moisture in the material 16 itself to evaporate, and the humidity inside the fuselage is composed of external water mist and water loss from the material. When the humidity inside the fuselage reaches equilibrium, the variable-frequency pressure water pump 19 reduces the pressure or stops, and restarts or increases the pressure after the internal humidity decreases.

[0036] The internal and external large circulation formed by the hot and humid air inside the fuselage under the conditions of the top wind pressure and the negative pressure below generated by the centrifugal fan 26 on the outside makes the high-temperature and hot and humid air continuously humidify and heat after passing through each layer of materials. The air flow sucked in by the negative pressure generated by the axial-flow fans 15 installed in the first and second pressure equalizing air boxes 11 and 12 at the bottom forms a small circulation on both sides inside the fuselage to supplement the wind speed of the multi-layer materials.

[0037] The internal and external circulation structure enables the materials inside the fuselage to have a high wind speed inside and also have the supplement of humidification and heating outside, reducing the overall external circulation volume of the air flow and reducing the size of the external wind mechanism.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0039] The embodiments described above are only descriptions of the preferred modes of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A continuous jet sterilization device for raisins, comprising a body (1), characterized in that: A first pressure-equalizing wind box (11) and a second pressure-equalizing wind box (12) are arranged on both sides of the fuselage (1); a conveying mechanism is arranged inside the fuselage (1); the fuselage (1) is communicated with the first pressure-equalizing wind box (11) and the second pressure-equalizing wind box (12), respectively; an axial flow fan (15) is arranged inside the first pressure-equalizing wind box (11) and the second pressure-equalizing wind box (12), respectively; the bottom of the fuselage (1) is communicated with a sterilization mechanism via a return air duct (22); and the outlet of the sterilization mechanism is communicated with the top of the fuselage (1).

2. A continuous jet sterilization device for raisins according to claim 1, characterized in that: Air ducts (13) are respectively arranged on the surfaces of the fuselage (1) that are in contact with the first pressure equalizing wind box (11) and the second pressure equalizing wind box (12); the air ducts (13) are respectively in communication with the first pressure equalizing wind box (11) and the second pressure equalizing wind box (12).

3. A continuous jet sterilization device for raisins according to claim 2, characterized in that: The conveying mechanism comprises a driving roller (2) and a driven roller (3), wherein a metal mesh belt (4) is sleeved on the driving roller (2) and the driven roller (3), and the conveying mechanism is provided with multiple layers so that the conveying path of the material (16) is S-shaped; a material baffle (8) is provided on the conveying mechanism, and the material baffle (8) is arranged on the conveying mechanism below the unloading end of the conveying mechanism of the upper layer.

4. A continuous jet sterilization device for raisins according to any one of claims 1 to 3, characterized in that: A feed hopper (5) is arranged on the top of the machine body (1), a feed air lock is arranged inside the feed hopper (5), a limit sealing plate (7) is arranged at the bottom of the feed hopper (5), and the bottom end of the limit sealing plate (7) is arranged close to the conveying mechanism.

5. A continuous jet sterilization device for raisins according to claim 4, characterized in that: A discharge hopper (9) is arranged on the side wall of the machine body (1), a discharge air shut-off device is arranged inside the discharge hopper (9), and one end of the conveying mechanism passes through the machine body (1) and extends into the discharge hopper (9).

6. A continuous jet sterilization device for raisins according to claim 5, characterized in that: The feed air lock and the discharge air lock have the same structure, and include a bearing seat (6) respectively fixed in the feed hopper (5) and the discharge hopper (9), and a fan blade-type baffle plate (10) is rotatably connected to the bearing seat (6).

7. The continuous jet sterilization device for raisins according to claim 1, characterized in that: The axial flow fan (15) is arranged below the air duct (13); below the axial flow fan (15), a through hole communicating with the first pressure equalizing wind box (11) and the second pressure equalizing wind box (12) is arranged on the fuselage (1).

8. The continuous jet sterilization device for raisins according to claim 1, characterized in that: The sterilization mechanism comprises a mixing box (24) connected to a return air duct (22), the mixing box (24) being connected to a sterilization source, the mixing box (24) being connected to a heating chamber (25), the heating chamber (25) being connected to an air supply duct (27) via a centrifugal fan (26), the other end of the air supply duct (27) being connected to a jet bellows (20), the jet bellows (20) being connected to the top of the fuselage (1), and the outlet being arranged toward the conveying mechanism.

9. A continuous jet sterilization device for raisins according to claim 8, characterized in that: The sterilization source comprises a sterilization tube (17), the sterilization tube (17) is connected to a water storage tank (18), the water storage tank (18) is connected to a mixing box (24) via a pipeline (14), a variable frequency pressure water pump (19) is provided on the pipeline (14), and a universal nozzle (23) is provided at one end of the pipeline (14) extending into the mixing box (24).

10. The continuous jet sterilization device for raisins according to claim 8, characterized in that: An air distribution plate (21) is arranged inside the fuselage (1) and above the conveying mechanism, and the air distribution plate (21) is arranged corresponding to the jet wind box (20).

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