Powder sterilization device and method

Abstract

The invention relates to a powder sterilization device and method, the powder sterilization device comprises a stirring device arranged in a sterilization tank, an ozone generator communicated with the sterilization tank, and a fresh air system communicated with the sterilization tank and used for replacing ozone in the sterilization tank, the sterilization tank is provided with an ozone outlet, and the stirring device is arranged in the sterilization tank. Ozone replaced by the fresh air system is discharged out of the sterilization tank through the ozone outlet to be treated, the fresh air system is arranged, it can be guaranteed that residual ozone cannot be left in powder after the powder is sterilized, the ozone is replaced to the outside of the sterilization tank to be treated through gas blown out by the fresh air system, and therefore the sterilization effect is improved. Thorough sterilization and disinfection are completed, no harmful substance residues are guaranteed, and nutritional ingredients of the raw materials are not damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of feed sterilization, and in particular relates to a powder sterilization device and method. Background Art

[0002] At present, the feed raw materials in the breeding industry contain a variety of bacteria, viruses, fungi and other microorganisms such as Escherichia coli, Staphylococcus aureus, Candida albicans, etc. If the feed raw materials are not sterilized or sterilized incompletely, it will cause a variety of animal diseases such as bacterial infection, mycotoxin poisoning, and parasitic infection; at the same time, unsterilized powder materials are prone to deterioration and mold during transportation, shortening the shelf life.

[0003] In order to reduce the risk of animal disease infection and improve breeding efficiency, extend the shelf life of powder materials and reduce waste, the existing technology generally adopts dry heat sterilization, ultra-high pressure sterilization, ultraviolet sterilization, chemical sterilization and other technologies. However, dry heat sterilization takes a long time to heat and consumes a lot of energy. Ultra-high pressure sterilization equipment requires a large investment and is costly. It may have adverse effects on some powder materials with poor pressure resistance and may also change their physical properties. Ultraviolet sterilization has weak penetration and can only kill microorganisms on the surface of powder materials, but it is difficult to work on internal microorganisms. It is greatly affected by environmental factors, such as dust and humidity, which will reduce the sterilization effect. If the ventilation and air dispersion of chemical sterilization are not thorough, there will be chemical residues, which are potentially harmful to animal health. There are safety risks in the operation process and pollution to the environment. With the existing ozone sterilization, after the powder is sterilized, there is still residual ozone in the powder, and the cleanliness of the powder cannot be guaranteed.

[0004] Therefore, it is a technical problem that technicians in this field need to solve to design a powder sterilization device and method to complete thorough sterilization and disinfection, ensure that no harmful substances remain, do not destroy the nutritional components of the raw materials, have low investment and operating costs, and make the process more environmentally friendly, so as to achieve the goal of efficient, thorough, safe, economical and environmentally friendly powder sterilization and disinfection. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a powder sterilization device and method, which can complete thorough sterilization and disinfection, ensure that no harmful substances remain, do not destroy the nutritional components of the raw materials, have low investment and operation costs, and make the process more environmentally friendly, thereby achieving the goal of efficient, thorough, safe, economical and environmentally friendly sterilization and disinfection of powdered materials.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A powder sterilization device comprises a sterilization tank, a stirring device arranged inside the sterilization tank, an ozone generator connected to the sterilization tank, and a fresh air system connected to the sterilization tank for replacing residual ozone in the sterilization tank. The sterilization tank is provided with an ozone outlet, and the ozone replaced by the fresh air system is discharged from the sterilization tank through the ozone outlet and processed.

[0008] Preferably, the sterilization tank is provided with a powder inlet and a powder outlet, the powder inlet is arranged at the top of the sterilization tank, and the powder outlet is arranged at the bottom of the sterilization tank.

[0009] Preferably, the stirring device comprises a driving motor, a transmission shaft drivingly connected to the driving motor, and a stirring blade arranged on the transmission shaft.

[0010] Preferably, the number of the stirring blades is two or more, and the spacing between adjacent stirring blades near the powder inlet is smaller than the spacing between adjacent stirring blades far from the powder inlet.

[0011] Preferably, the powder inlet is connected to the raw material bin via a feeding auger, and the powder outlet is connected to the sterilized powder storage bin via a discharging auger.

[0012] Preferably, the connection point between the sterilization tank and the ozone generator is arranged close to the powder inlet.

[0013] Preferably, the ozone outlet is communicated with an external water pool arranged on one side of the sterilization tank.

[0014] The utility model also discloses a powder sterilization method, which uses the above-mentioned powder sterilization device and is characterized in that it comprises the following steps:

[0015] The ozone generator is turned on, and after the ozone in the sterilization tank reaches a preset value, the powder is fed and the stirring device is turned on at the same time;

[0016] After the feeding is completed, the stirring device is continued to stir for a preset time, and then the ozone generator is turned off;

[0017] Open the fresh air system to discharge the residual ozone in the powder from the ozone outlet;

[0018] Discharge the sterilized powder.

[0019] Preferably, when the ozone concentration in the sterilization tank reaches 150 mg, the powder enters the sterilization tank from the powder inlet.

[0020] Preferably, after the feeding is completed, the stirring device stirs for 15 minutes and then turns off the ozone generator.

[0021] Compared with the prior art, the present invention has achieved the following technical effects:

[0022] By setting up a fresh air system, it can be ensured that the residual ozone after sterilization of the powder will not remain in the powder. Instead, the ozone will be replaced by the gas blown out by the fresh air system to the outside of the sterilization tank for treatment, completing thorough sterilization and disinfection, ensuring that no harmful substances remain and not destroying the nutritional components of the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Attached Figure 1 It is a schematic diagram of the cross-sectional structure of the powder sterilization device disclosed in the embodiment of the present invention;

[0025] Attached Figure 2 This is a schematic diagram of the overall structure of the powder sterilization device disclosed in the embodiment of the present invention;

[0026] Attached Figure 3 It is a schematic diagram of a sterilization process flow chart of a powder sterilization device disclosed in an embodiment of the present invention;

[0027] Among them, 1. Raw material warehouse; 2. Feed auger; 3. Powder inlet; 4. Inlet gate valve; 5. Drive motor; 6. Transmission shaft; 7. Mixing blades; 8. Powder outlet; 9. Discharge auger; 10. Outlet gate valve; 11. Fresh air system; 12. Ozone generator; 13. Sterilization tank. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The purpose of the present invention is to provide a powder sterilization device and method, which can complete thorough sterilization and disinfection, ensure that no harmful substances remain, do not destroy the nutritional components of the raw materials, have low investment and operation costs, and make the process more environmentally friendly, so as to achieve the goal of efficient, thorough, safe, economical and environmentally friendly powder sterilization and disinfection.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] refer to Figure 1-2 The powder sterilization device disclosed in the embodiment of the present invention at least includes a sterilization tank 13, a stirring device is arranged inside the sterilization tank 13, the sterilization tank 13 is connected to the ozone generator 12, and the sterilization tank 13 is connected to the fresh air system 11, and an ozone outlet is arranged on the sterilization tank 13. The gas blown out from the fresh air system 11 replaces the ozone remaining in the sterilization tank 13, and the ozone is processed after being discharged from the ozone outlet. By setting up the fresh air system 11, it can be ensured that the residual ozone after the powder is sterilized will not remain in the powder, but the ozone is replaced by the gas blown out by the fresh air system 11 to the outside of the sterilization tank 13 for processing, thereby completing thorough sterilization and disinfection, ensuring that no harmful substances remain, and not destroying the nutritional components of the raw materials.

[0032] It should be noted that the fresh air system 11 is a prior art, and its main function is to introduce fresh air outside the sterilization tank 13 into the sterilization tank 13 . An ozone detector is provided in the sterilization tank 13 to monitor the ozone concentration in the sterilization tank 13 .

[0033] refer to Figure 1-2 As an implementation mode, the sterilization tank 13 is provided with a powder inlet 3 and a powder outlet 8, the powder inlet 3 is arranged at the top of the sterilization tank 13, and the powder outlet 8 is arranged at the bottom of the sterilization tank 13. The powder inlet 3 is arranged at the top of the sterilization tank 13. When the powder is fed, the powder can be further dispersed by the gravity of the powder, thereby ensuring that the powder is fully in contact with ozone. The powder outlet 8 is arranged at the bottom of the sterilization tank 13, which can facilitate the discharge of the sterilized powder.

[0034] It should be noted that an inlet gate valve 4 is provided at the powder inlet 3 and an outlet gate valve 10 is provided at the powder outlet 8 to facilitate the control of the opening and closing of the powder inlet 3 and the powder outlet 8, and the ozone outlet is provided away from the powder inlet.

[0035] refer to Figure 1-2 As an implementation mode, the stirring device includes a driving motor 5, which is connected to a transmission shaft 6. A stirring blade 7 for stirring the powder is provided on the transmission shaft 6. The driving motor 5 is arranged outside the sterilization tank 13, and the transmission shaft 6 penetrates the sterilization tank 13. By providing the stirring device, it can be ensured that the powder can be fully contacted with ozone, thereby improving the sterilization effect of the powder.

[0036] refer to Figure 1-2As an implementation mode, two or more stirring blades 7 are provided, and the spacing between adjacent stirring blades 7 near the powder inlet 3 is smaller than the spacing between adjacent stirring blades 7 far from the powder inlet 3, that is, the spacing between the stirring blades 7 near the powder inlet 3 is smaller, which can improve the dispersion effect of the powder at the powder inlet 3, and the connection point between the ozone generator 12 and the sterilization tank 13 is provided at the powder inlet 3, which can further ensure the sufficient contact between the powder and the ozone.

[0037] refer to Figure 1-2 As an implementation mode, the powder inlet 3 is connected with the raw material bin 1 through the feeding auger 2, and the powder outlet 8 is connected with the sterilization powder storage bin through the discharging auger 9. By setting the feeding auger 2 and the discharging auger 9, the feeding and discharging can be automated without manual feeding and discharging, thereby improving work efficiency.

[0038] refer to Figure 1-2 As an implementation mode, the connection point between the sterilization tank 13 and the ozone generator 12 is arranged near the powder inlet 3, that is, the ozone inlet is arranged near the powder inlet 3. When the powder is just fed, the ozone generated by the ozone generator 12 can impact the powder, thereby dispersing the powder, making the powder fully contact with the ozone, and improving the sterilization effect of the powder.

[0039] It should be noted that the connection between the ozone generator 12 and the sterilization tank 13 is set at the bottom of the sterilization tank 13. At this time, the ozone generated by the ozone generator 12 forms convection with the powder falling from the top, which can further disperse the powder and improve the sterilization effect of the powder.

[0040] refer to Figure 1-2 As an implementation method, the ozone outlet is connected to an external water pool arranged on one side of the sterilization tank 13, and the ozone replaced by the fresh air system 11 is introduced into the external water pool to neutralize the ozone to complete the ozone treatment.

[0041] refer to Figure 3 This embodiment also discloses a powder sterilization method, comprising the following steps:

[0042] The powder enters the raw material bin 1, and at the same time, the ozone generator 12 is turned on to introduce ozone into the sterilizing tank 13. When the ozone detector detects the preset concentration, the inlet gate valve 4 is opened, and the feed auger 2 transports the powder material into the sterilizing tank 13, and at the same time, the stirring device in the sterilizing tank 13 starts stirring;

[0043] After the feeding is completed, the inlet gate valve 4 is closed, and then after the stirring and sterilization reaches the predetermined time, the ozone system is closed, the fresh air system 11 is opened, the ozone outlet is connected to the external water pool, the ozone in the tank is neutralized, the outlet gate valve 10 is opened, and the clean powder is transported out through the discharge auger 9.

[0044] refer to Figure 3 As an implementation mode, when the ozone concentration in the sterilization tank 13 reaches 150 mg, the powder enters the sterilization tank 13 from the powder inlet 3. Before the powder enters the sterilization tank 13, the ozone concentration in the sterilization tank 13 reaches 150 mg, which can ensure that the powder entering the sterilization tank 13 is fully in contact with the ozone, thereby improving the sterilization effect of the powder.

[0045] refer to Figure 3 As an implementation method, after the feeding is completed, the stirring device stirs for 15 minutes and then turns off the ozone generator 12, which can increase the contact time between the powder and ozone and improve the sterilization effect of the powder.

[0046] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0047] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A powder sterilization device, characterized in that: The invention comprises a sterilization tank, a stirring device arranged inside the sterilization tank, an ozone generator connected to the sterilization tank, and a fresh air system connected to the sterilization tank for replacing residual ozone in the sterilization tank. The sterilization tank is provided with an ozone outlet, and the ozone replaced by the fresh air system is discharged from the sterilization tank through the ozone outlet and processed.

2. The powder sterilization device according to claim 1, characterized in that: The sterilizing tank is provided with a powder inlet and a powder outlet. The powder inlet is arranged at the top of the sterilizing tank, and the powder outlet is arranged at the bottom of the sterilizing tank.

3. The powder sterilization device according to claim 2, characterized in that: The stirring device comprises a driving motor, a transmission shaft drivingly connected to the driving motor, and a stirring blade arranged on the transmission shaft.

4. The powder sterilization device according to claim 3, characterized in that: The stirring blades are arranged in two or more portions, and the spacing between adjacent stirring blades near the powder material inlet is smaller than the spacing between adjacent stirring blades far from the powder material inlet.

5. The powder sterilization device according to claim 2, characterized in that: The powder inlet is connected to the raw material bin through a feeding auger, and the powder outlet is connected to the sterilized powder storage bin through a discharging auger.

6. The powder sterilization device according to claim 2, characterized in that: The connection point between the sterilizing tank and the ozone generator is arranged close to the powder inlet.

7. The powder sterilization device according to claim 1, characterized in that: The ozone outlet is communicated with an external water pool arranged on one side of the sterilization tank.

8. A powder sterilization method, using the powder sterilization device according to any one of claims 1 to 7, characterized in that: The following steps are involved: The ozone generator is turned on, and after the ozone in the sterilization tank reaches a preset value, the powder is fed and the stirring device is turned on at the same time; After the feeding is completed, the stirring device is continued to stir for a preset time, and then the ozone generator is turned off; Open the fresh air system to discharge the residual ozone in the powder from the ozone outlet; The sterilized powder is discharged.

9. The powder sterilization method according to claim 8, characterized in that: When the ozone concentration in the sterilization tank reaches 150 mg, the powder enters the sterilization tank from the powder inlet.

10. The powder sterilization method according to claim 8, characterized in that: After the feeding is completed, the stirring device is stirred for 15 minutes and then the ozone generator is turned off.

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