A mixing device for low-temperature disinfectant and antifreeze.

Abstract

This utility model discloses a mixing device for low-temperature disinfectant and antifreeze, including an antifreeze supply mechanism, a disinfectant supply mechanism, and a mixer disposed between the antifreeze supply mechanism and the disinfectant supply mechanism. The mixer has a mixing inlet, a finished product outlet, and a spiral stirring assembly. The spiral stirring assembly includes a stirring shaft and multiple stages of spiral stirring blades connected to the stirring shaft at intervals. The extension direction of the stirring shaft is parallel to the flow direction of the mixed fluid in the mixer, and the spiral angle of the spiral stirring blades is 30 to 45 degrees. Multiple ultrasonic oscillators are disposed on the outer wall of the mixer, each ultrasonic oscillator corresponding to each stage of spiral stirring blades. This enables efficient, stable, and uniform mixing of antifreeze and disinfectant in a low-temperature environment, thereby solving problems such as stratification, crystallization, and effective chlorine decay in the mixing of antifreeze and disinfectant at low temperatures.

Description

Technical Field

[0001] This utility model relates to the field of cold chain cargo disinfection technology, and in particular to a mixing device for low-temperature disinfectant and antifreeze. Background Technology

[0002] During cold chain transportation, a low-temperature environment (such as -40℃) must be maintained to prevent the goods from deteriorating, and the goods and packaging must be disinfected.

[0003] Sodium hypochlorite-based disinfectants are commonly used. To prevent the disinfectant from freezing at low temperatures, antifreeze (such as ethanol) needs to be added. However, using traditional T-tube mixers or simple static mixers to mix disinfectants and antifreeze at low temperatures can easily cause the antifreeze and disinfectant to separate into layers in the pipeline, or even crystallize, resulting in uneven distribution of the disinfectant components. In addition, if the disinfectant and antifreeze are not mixed in time or evenly, such as when ethanol and sodium hypochlorite react, the available chlorine will rapidly decrease. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a mixing device for low-temperature disinfectants and antifreeze, which enables efficient, stable, and uniform mixing of antifreeze and disinfectants in a low-temperature environment, thereby solving problems such as layering, crystallization, and effective chlorine decay in the mixing of antifreeze and disinfectants at low temperatures.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] This utility model provides a mixing device for a low-temperature disinfectant and an antifreeze agent, including an antifreeze supply mechanism, a disinfectant supply mechanism, and a mixer disposed between the antifreeze supply mechanism and the disinfectant supply mechanism; the mixer has a mixing inlet, a finished product outlet, and a spiral stirring assembly disposed between the mixing inlet and the finished product outlet; the outlets of the antifreeze supply mechanism and the disinfectant supply mechanism are respectively connected to the mixing inlet; the spiral stirring assembly includes a stirring shaft and multiple stages of spiral stirring blades arranged at intervals and connected to the stirring shaft, the extension direction of the stirring shaft being parallel to the flow direction of the mixed fluid in the mixer, and the spiral angle of the spiral stirring blades being 30 to 45 degrees; multiple ultrasonic oscillators are disposed on the outer wall of the mixer, each ultrasonic oscillator corresponding to each stage of the spiral stirring blades.

[0007] Furthermore, the multi-stage spiral mixing blades are arranged at equal intervals.

[0008] Furthermore, the surface of the spiral stirring blades is coated with an anti-corrosion layer.

[0009] Furthermore, the anti-corrosion layer is a polytetrafluoroethylene coating; the film thickness of the anti-corrosion layer is 5 to 10 micrometers.

[0010] Furthermore, the outlets of the antifreeze supply mechanism and the disinfectant supply mechanism are connected to the mixing inlet via a three-way connecting pipe.

[0011] Furthermore, the mixer has a housing that accommodates the spiral stirring assembly, with the mixing inlet and the finished product outlet respectively provided at opposite ends of the housing, and the stirring shaft rotatably mounted inside the housing; the ultrasonic oscillator is mounted outside the housing.

[0012] Furthermore, the finished product outlet is equipped with an outlet pipe, and a turbidity sensor and a conductivity sensor are installed inside the outlet pipe.

[0013] Furthermore, it also includes a control board; the antifreeze supply mechanism includes a connected antifreeze reservoir and a first addition pipe, the disinfectant supply mechanism includes a disinfectant raw material reservoir, a disinfectant generator, and a second addition pipe, the outlet of the disinfectant raw material reservoir is connected to the inlet of the disinfectant generator, and the outlet of the disinfectant generator is connected to the inlet of the second addition pipe; the first addition pipe and the second addition pipe are respectively equipped with metering pumps for adjusting the flow rate of the fluid inside them; the signal output terminals of the turbidity sensor and the conductivity sensor are connected to the signal input terminals of the control board, and the signal output terminals of the control board are respectively connected to the signal input terminals of the metering pump and the ultrasonic oscillator; the outlets of the first addition pipe and the second addition pipe are the outlets of the antifreeze supply mechanism and the disinfectant supply mechanism, respectively.

[0014] Furthermore, it also includes a housing; the antifreeze supply mechanism, the disinfectant supply mechanism, and the mixer are all assembled in the housing.

[0015] The technical solution provided by this utility model has the following beneficial effects:

[0016] The mixer is used to efficiently, stably and uniformly mix antifreeze and disinfectant in low-temperature environments, thereby solving problems such as layering, crystallization and effective chlorine decay of antifreeze and disinfectant under low-temperature conditions. Attached Figure Description

[0017] Figure 1 The image shown is an external view of the mixing device for the low-temperature disinfectant and antifreeze in the embodiment.

[0018] Figure 2 The diagram shown is a schematic of a mixing device for low-temperature disinfectant and antifreeze without a box in the embodiment;

[0019] Figure 3 The figure shown is a first-position cross-sectional view of the mixing device for the low-temperature disinfectant and antifreeze in the embodiment;

[0020] Figure 4 The image shown is a cross-sectional view of the mixing device for the low-temperature disinfectant and antifreeze in the embodiment. Detailed Implementation

[0021] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0023] Reference Figures 1 to 4 This embodiment provides a mixing device for low-temperature disinfectant and antifreeze (hereinafter referred to as the mixing device) to solve problems such as layering, crystallization and effective chlorine decay when antifreeze and disinfectant are mixed at low temperatures. At the same time, it realizes intelligent adjustment of mixing parameters, thereby ensuring disinfection effect and equipment stability.

[0024] like Figure 2 and Figure 3 As shown, the mixing device in this embodiment includes a housing 8 and an antifreeze supply mechanism 1, a disinfectant supply mechanism 2, a control board 5, and a mixer 3 assembled in the housing 8. The antifreeze supply mechanism 1 includes an antifreeze storage tank 11 and a first addition pipe 12 connected to each other. The disinfectant supply mechanism 2 includes a disinfectant raw material storage tank 21, a disinfectant generator 22, and a second addition pipe 23. The outlet of the disinfectant raw material storage tank 21 is connected to the inlet of the disinfectant generator 22, and the outlet of the disinfectant generator 22 is connected to the inlet of the second addition pipe 23. The first addition pipe 12 and the second addition pipe 23 are respectively equipped with metering pumps 7 for adjusting the flow rate of the fluid inside them near the end of the mixer 3.

[0025] More specifically, such as Figure 3 and Figure 4As shown, the mixer 3 has a mixing inlet 31, a finished product outlet 32, and a spiral stirring assembly 33 disposed between the mixing inlet 31 and the finished product outlet 32. The outlets of the first adding pipe 12 and the second adding pipe 23 are connected to the mixing inlet 31 via a three-way connecting pipe 4. The finished product outlet 32 ​​is equipped with an outlet pipe 9. The spiral stirring assembly 33 includes a stirring shaft 331 and multiple stages of spiral stirring blades 332 arranged at intervals and connected to the stirring shaft 331 (e.g., a 5-stage stirring structure composed of 5 sets of spiral stirring blades 332). The extending direction of the stirring shaft 331 is parallel to the flow direction of the mixed fluid within the mixer 3, and the spiral angle of the spiral stirring blades 332 is 30–45 degrees.

[0026] If the helical angle of the spiral stirring blade 332 is too small (e.g., <30 degrees), the fluid rotation will be weak and the mixing will be insufficient.

[0027] If the helical angle of the spiral stirring blade 332 is too large (e.g., >45 degrees), the fluid resistance will increase dramatically, which will easily lead to the fluid flow rate being too slow at low temperatures and crystallization.

[0028] Therefore, when the helix angle of the spiral stirring blade 332 is 30 to 45 degrees, the antifreeze and disinfectant can be forcibly mixed by relying solely on the interaction between the fluid itself and the spiral stirring blade 332 without the need for external power.

[0029] In specific implementation, such as Figure 3 and Figure 4 As shown, the mixer 3 has a rectangular shell 34 made of stainless steel. The two opposite ends of the shell 34 are respectively provided with a mixing inlet 31 and a finished product outlet 32. The stirring shaft 331 is rotatably mounted in the shell 34 to ensure that each spiral stirring blade 332 can rotate in the shell 34 and perform diversion, cutting, stirring and full mixing of the mixed fluid flowing through the shell 34.

[0030] Multiple ultrasonic oscillators 6 (such as piezoelectric ceramic structures) are provided on the outer wall of the housing 34 to prevent local overheating of the mixed fluid. Each ultrasonic oscillator 6 corresponds to each stage of the spiral stirring blade 332, which can further improve the uniformity of the mixture while avoiding affecting the quality of the mixture.

[0031] The outlet pipe 9 is equipped with a turbidity sensor and a conductivity sensor, and the signal output terminals of the turbidity sensor and the conductivity sensor are connected to the signal input terminals of the control board 5. The signal output terminals of the control board 5 are respectively connected to the signal input terminals of each metering pump 7 and each ultrasonic oscillator 6. Therefore, the turbidity sensor, the conductivity sensor, the metering pump 7 and the ultrasonic oscillator 6 can work in an orderly manner under the coordination of the control board 5. In this way, each metering pump 7 and the ultrasonic oscillator 6 can adjust its own operating status in a timely manner according to the feedback information of the turbidity sensor and the conductivity sensor, thereby realizing intelligent regulation.

[0032] When the mixing device is in use, the antifreeze from the antifreeze reservoir 11 is first fed into the first adding pipe 12, and the disinfectant formed by the disinfectant raw material reservoir 21 and the disinfectant generator 22 is fed into the second adding pipe 23. Then, the mixture is formed in the three-way connecting pipe 4, and then flows into the housing 34 from the mixing inlet 31 of the mixer 3 and is stirred and mixed.

[0033] During the mixing process within mixer 3, the first-stage spiral stirring blades 332 cut the mixed fluid into multiple sub-streams to break the initial stratification (e.g., ethanol floating on the surface of disinfectant). The cut sub-streams then flow along the spiral trajectory of the spiral stirring blades 332, generating rotating vortices that cause different fluid components to continuously cross and mix during the flow, forming a twisted shape. After each subsequent stage of spiral stirring blades 332, the mixing uniformity increases, gradually forming a multi-stage progressive mixing effect. That is, fluids that are not fully mixed by the previous stage of spiral stirring blades 332 will be cut and rotated again when entering the next stage of spiral stirring blades 332, ultimately forming a uniformly mixed liquid at the finished product outlet 32 ​​of mixer 3, which then flows out from the outlet pipe 9.

[0034] In summary, by using mixer 3, the antifreeze and disinfectant can be efficiently, stably and uniformly mixed in a low-temperature environment, thereby solving problems such as layering, crystallization and effective chlorine decay of antifreeze and disinfectant under low temperature conditions.

[0035] In a further preferred embodiment, the multi-stage spiral stirring blades 332 are arranged at equal intervals, and the surface of each spiral stirring blade 332 is coated with an anti-corrosion layer (such as a polytetrafluoroethylene coating) with a film thickness of 5 to 10 micrometers to resist chloride ion corrosion.

[0036] As shown in Table 1, compared with the mixing methods of the prior art, the mixing device of this specific embodiment has a significant advantage in mixing antifreeze and disinfectant at low temperatures. That is, it can prepare a high-quality mixture at a low temperature of -40°C, and can effectively improve the stability of chlorine concentration by 40% and ensure that the bactericidal log value is stable at at least 5.0.

[0037] Table 1:

[0038] Turbidity of the mixed liquid 8.2NTU 2.1NTU Stability of available chlorine concentration (2h) 45% decrease 5% decrease bactericidal logarithm 4.2 5.8

[0039] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A mixing device for a low-temperature disinfectant and an antifreeze agent, characterized in that: It includes an antifreeze supply mechanism, a disinfectant supply mechanism, and a mixer disposed between the antifreeze supply mechanism and the disinfectant supply mechanism; The mixer has a mixing inlet, a finished product outlet, and a spiral stirring assembly disposed between the mixing inlet and the finished product outlet; the outlets of the antifreeze supply mechanism and the disinfectant supply mechanism are respectively connected to the mixing inlet; the spiral stirring assembly includes a stirring shaft and multiple spiral stirring blades arranged at intervals and connected to the stirring shaft, the extension direction of the stirring shaft is parallel to the flow direction of the mixed fluid in the mixer, and the spiral angle of the spiral stirring blades is 30 to 45 degrees; The mixer is equipped with multiple ultrasonic oscillators on its outer wall, each ultrasonic oscillator corresponding to a specific stage of the spiral stirring blade.

2. The mixing device for low-temperature disinfectant and antifreeze according to claim 1, characterized in that: The multi-stage spiral mixing blades are arranged at equal intervals.

3. The mixing device for low-temperature disinfectant and antifreeze according to claim 1, characterized in that: The surface of the spiral stirring blades is coated with an anti-corrosion layer.

4. The mixing device for low-temperature disinfectant and antifreeze according to claim 3, characterized in that: The anti-corrosion layer is a polytetrafluoroethylene coating; the film thickness of the anti-corrosion layer is 5 to 10 micrometers.

5. The mixing device for low-temperature disinfectant and antifreeze according to claim 4, characterized in that: The outlets of the antifreeze supply mechanism and the disinfectant supply mechanism are connected to the mixing inlet via a three-way connector.

6. The mixing device for low-temperature disinfectant and antifreeze according to any one of claims 1-5, characterized in that: The mixer has a housing that accommodates the spiral stirring assembly, with the mixing inlet and the finished product outlet respectively located at opposite ends of the housing, and the stirring shaft rotatably mounted inside the housing; the ultrasonic oscillator is mounted outside the housing.

7. The mixing device for low-temperature disinfectant and antifreeze according to claim 6, characterized in that: The finished product outlet is equipped with an outlet pipe, and a turbidity sensor and a conductivity sensor are installed inside the outlet pipe.

8. The mixing device for low-temperature disinfectant and antifreeze according to claim 7, characterized in that: It also includes a control board; the antifreeze supply mechanism includes a connected antifreeze reservoir and a first addition pipe; the disinfectant supply mechanism includes a disinfectant raw material reservoir, a disinfectant generator, and a second addition pipe, the outlet of the disinfectant raw material reservoir is connected to the inlet of the disinfectant generator, and the outlet of the disinfectant generator is connected to the inlet of the second addition pipe; the first addition pipe and the second addition pipe are respectively equipped with metering pumps for adjusting the flow rate of the fluid inside them; the signal output terminals of the turbidity sensor and the conductivity sensor are connected to the signal input terminals of the control board, and the signal output terminals of the control board are respectively connected to the signal input terminals of the metering pump and the ultrasonic oscillator; the outlets of the first addition pipe and the second addition pipe are the outlets of the antifreeze supply mechanism and the disinfectant supply mechanism, respectively.

9. The mixing device for low-temperature disinfectant and antifreeze according to any one of claims 1-5, characterized in that: It also includes a housing; the antifreeze supply mechanism, the disinfectant supply mechanism and the mixer are all assembled in the housing.

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