Peroxyacetic acid concentration detection device and cleaning and disinfecting apparatus

Abstract

The utility model discloses a peracetic acid concentration detection device and cleaning disinfection equipment, apply to disinfectant detection technical field, include: containing cavity, ultraviolet light source, flowing cuvette, vacuum ultraviolet sensor and liquid bucket, containing cavity is provided with light outlet, vacuum ultraviolet sensor is aligned light outlet, containing cavity and vacuum ultraviolet sensor enclose and form sealed cavity, ultraviolet light source and flowing cuvette are located in sealed cavity, flowing cuvette and liquid bucket intercommunication, ultraviolet light source, flowing cuvette and vacuum ultraviolet sensor are sequentially arranged along the light transmission direction. The utility model judges peracetic acid concentration through vacuum ultraviolet sensor direct detection specific wavelength ultraviolet light, while flowing cuvette is directly connected with liquid bucket, and ultraviolet light source and flowing cuvette are placed in the sealed cavity that containing cavity and vacuum ultraviolet sensor enclose and form, thereby realize fully automatic closed operation, whole detection process does not need manual intervention, removes environmental and human factor interference.

Description

Technical Field

[0001] This utility model relates to the field of disinfectant detection technology, and in particular to a peracetic acid concentration detection device and a cleaning and disinfection equipment. Background Technology

[0002] Peracetic acid, as a highly effective disinfectant, has a concentration that directly affects its disinfection efficacy; therefore, its concentration needs to be monitored to ensure effective disinfection. Currently, commonly used methods for detecting peracetic acid concentration include spectrophotometry, test strips, and electrochemical methods. The spectrophotometric method involves adding catalase and total chlorine reagent to a peracetic acid solution and measuring the absorbance of the mixed solution using a spectrophotometer. The concentration of peracetic acid in the solution is then determined by comparing the results to a colorimetric curve. The test strip method utilizes the colorimetric reaction between an iodine complex and peracetic acid, and the concentration is checked against a colorimetric table. The electrochemical method measures the peracetic acid concentration by measuring the conductivity of an aqueous peracetic acid solution.

[0003] However, all of the above detection methods have limitations. Spectrophotometry requires the addition of catalase and total chlorine reagent to the test solution to eliminate interference from other substances, which is cumbersome. Furthermore, it uses a spectrophotometer to measure absorbance, resulting in low equipment integration and requiring manual intervention. Test strip methods produce similar colors at similar concentrations, but are significantly affected by ambient light conditions and operator error, making it impossible to eliminate environmental and human interference. Electrochemical methods require periodic polishing of the anode probe and replacement of the neutralization solution, and the anode must be immersed in water for extended periods to prevent malfunction, posing challenges to equipment maintenance. Therefore, achieving a method that is simultaneously simple to operate, highly resistant to interference, and easy to maintain is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a peracetic acid concentration detection device and a cleaning and disinfection equipment that is easy to operate, has strong anti-interference ability and is easy to maintain.

[0005] To solve the above-mentioned technical problems, this utility model provides a peracetic acid concentration detection device, including: a receiving cavity, an ultraviolet light source, a flow cuvette, a vacuum ultraviolet sensor, and a liquid tank;

[0006] The containing cavity is provided with a light-emitting hole; the vacuum ultraviolet sensor is aligned with the light-emitting hole; the containing cavity and the vacuum ultraviolet sensor enclose a sealed cavity; the ultraviolet light source and the flowing cuvette are located inside the sealed cavity; the flowing cuvette and the liquid tank are connected.

[0007] The ultraviolet light source, the flowing cuvette, and the vacuum ultraviolet sensor are arranged sequentially along the ultraviolet light transmission direction.

[0008] Optionally, the peracetic acid concentration detection device further includes: a reflector; the reflector is located within the sealed cavity; the reflector surrounds the ultraviolet light source and extends toward the flow cuvette.

[0009] Optionally, the ultraviolet light source is connected to the reflector; the reflector is connected to the receiving cavity.

[0010] Optionally, the peracetic acid concentration detection device further includes: a first liquid transmission line and a second liquid transmission line;

[0011] One end of the first liquid transfer pipeline is connected to the liquid tank, and the other end is connected to the liquid inlet of the flow cuvette.

[0012] One end of the second liquid transfer pipeline is connected to the outlet of the flow cuvette, and the other end is connected to the liquid tank.

[0013] Optionally, the peracetic acid concentration detection device further includes: a liquid pump; the liquid pump is connected to the liquid tank through one of the first liquid transmission pipelines, and is connected to the inlet of the flow cuvette through another of the first liquid transmission pipelines.

[0014] Optionally, a check valve is provided on the first liquid transfer pipeline between the liquid pump and the liquid tank;

[0015] A photoelectric fluid sensor is installed on the first liquid transfer pipeline between the liquid pump and the inlet of the flow cuvette.

[0016] Optionally, the peracetic acid concentration detection device further includes: a signal transmitter; the signal transmitter is electrically connected to the vacuum ultraviolet sensor.

[0017] Optionally, the ultraviolet light source is a low-pressure mercury lamp or a flashing xenon lamp;

[0018] And / or, the flow cuvette is a quartz flow cuvette.

[0019] Optionally, the peracetic acid concentration detection device includes: a support device and a light shield; the support device is disposed on the top of the liquid tank; the light shield is disposed on the surface of the support device and together with the support device forms the receiving cavity;

[0020] The support device is provided with the light-emitting hole; the vacuum ultraviolet sensor is embedded in the light-emitting hole;

[0021] The light shield has an opening on its side wall; the flow cuvette is disposed on the surface of the support device and embedded in the opening.

[0022] To solve the above-mentioned technical problems, this utility model also provides a cleaning and disinfection device, including: a peracetic acid concentration detection device as described above.

[0023] As can be seen, the peracetic acid concentration detection device provided by this utility model utilizes the characteristic that peracetic acid ions have absorption peaks for specific wavelengths of ultraviolet light. By controlling the generation of ultraviolet light from an ultraviolet light source and using a vacuum ultraviolet sensor to detect wavelengths below 200nm, the device avoids the ultraviolet light absorption peaks of other substances (such as hydrogen peroxide) that may be present in the peracetic acid disinfectant solution. This eliminates the influence of other substances in the solution without the need for other methods. Therefore, the vacuum ultraviolet sensor can directly detect the degree of energy level attenuation after specific wavelength ultraviolet light passes through a flowing cuvette, thereby determining the peracetic acid concentration in the flowing cuvette. Simultaneously, by directly connecting the flowing cuvette to the liquid tank and placing the ultraviolet light source and the flowing cuvette within a sealed cavity formed by the containing chamber and the vacuum ultraviolet sensor, fully automatic closed operation is achieved. The entire detection process requires no manual intervention, eliminating interference from environmental and human factors. This utility model also provides a cleaning and disinfection device, including the aforementioned peracetic acid concentration detection device, thus possessing the same beneficial effects. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a peracetic acid concentration detection device provided in an embodiment of the present invention;

[0026] Figure 2 This is a partial schematic diagram of a peracetic acid concentration detection device provided in an embodiment of the present invention.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1-Support device; 2-Light shield; 3-Ultraviolet light source; 4-Flow cuvette; 5-Vacuum ultraviolet sensor; 6-Liquid tank; 7-Reflector; 8-Signal transmitter; 91-First liquid transmission line; 92-Second liquid transmission line; 10-Liquid pump; 11-One-way valve; 12-Photoelectric fluid sensor. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Please refer to Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the structure of a peracetic acid concentration detection device provided in an embodiment of the present invention; Figure 2 This is a partial schematic diagram of a peracetic acid concentration detection device provided in an embodiment of the present invention.

[0031] This utility model provides a peracetic acid concentration detection device, which may include: a receiving cavity, an ultraviolet light source 3, a flow cuvette 4, a vacuum ultraviolet sensor 5, and a liquid tank 6;

[0032] The containment cavity is equipped with a light-emitting hole; the vacuum ultraviolet sensor 5 is aligned with the light-emitting hole; the containment cavity and the vacuum ultraviolet sensor 5 enclose a sealed cavity; the ultraviolet light source 3 and the flowing cuvette 4 are located inside the sealed cavity; the flowing cuvette 4 is connected to the liquid tank 6;

[0033] The ultraviolet light source 3, the flowing cuvette 4, and the vacuum ultraviolet sensor 5 are arranged sequentially along the ultraviolet light transmission direction.

[0034] It should be noted that the containment cavity in this embodiment is used to contain the ultraviolet light source 3 and the flowing cuvette 4, and shares a sealed cavity with the vacuum ultraviolet sensor 5, so that the ultraviolet light source 3 and the flowing cuvette 4 are in a sealed environment. This embodiment does not limit the specific structure of the containment cavity, as long as it can ensure that space can be formed to contain the ultraviolet light source 3 and the flowing cuvette 4. For example, the peracetic acid concentration detection device may include: a support device 1 and a light shield 2; the support device 1 is set on the top of the liquid tank 6; the light shield 2 is set on the surface of the support device 1 and forms a containment cavity with the support device 1; the support device 1 is provided with a light outlet hole; the side wall of the light shield 2 is provided with an opening. It should be noted that the light shield 2 in this embodiment can prevent the light generated by the ultraviolet light source 3 from leaking out, thereby reducing light loss.

[0035] This embodiment does not limit the structure of the support device 1, as long as it can support the light shield 2. This embodiment does not limit the size of the support device 1; for example, the size of the support device 1 can be greater than or equal to the size of the light shield 2.

[0036] Furthermore, the peracetic acid concentration detection device in this embodiment may also include: a reflector 7; the reflector 7 is located within a sealed cavity; the reflector 7 surrounds the ultraviolet light source 3 and extends toward the flowing cuvette 4. It should be noted that in this embodiment, the reflector 7 is arranged around the ultraviolet light source 3, which can reflect the light generated by the ultraviolet light source 3 to the flowing cuvette 4, thereby improving light utilization.

[0037] This embodiment does not limit the specific installation method of the reflector 7. The reflector 7 can be connected to the receiving cavity, but is not limited to this. Furthermore, the reflector 7 can be connected to the light shield 2. The connection method can be a fixed connection or a movable connection.

[0038] It should be noted that the ultraviolet light source 3 in this embodiment is used to generate ultraviolet light. This embodiment does not limit the specific type of ultraviolet light source 3, as long as it can generate ultraviolet light. For example, the ultraviolet light source 3 can be a low-pressure mercury lamp or a flashing xenon lamp. Preferably, the ultraviolet light source 3 can be a low-pressure mercury lamp.

[0039] This embodiment does not limit the installation method of the ultraviolet light source 3. The ultraviolet light source 3 can be connected to the receiving cavity, but is not limited to that of the cavity. Furthermore, the ultraviolet light source 3 can be connected to the reflector 7. The connection method can be a fixed connection or a movable connection.

[0040] It should be noted that the flowing cuvette 4 in this embodiment is used to store the peracetic acid disinfectant solution to be tested. The ultraviolet light source 3, the flowing cuvette 4, and the vacuum ultraviolet sensor 5 are arranged sequentially along the ultraviolet light transmission direction. The ultraviolet light generated by the ultraviolet light source 3 will irradiate the liquid in the flowing cuvette 4. This embodiment does not limit the specific type of flowing cuvette 4; it can be, but is not limited to, a quartz flowing cuvette 4. It should be noted that quartz is a common material in the prior art, and this embodiment does not limit the internal composition of the flowing cuvette 4, but directly uses a quartz flowing cuvette 4 made of existing materials.

[0041] This embodiment does not limit the specific installation method of the flow cuvette 4. The flow cuvette 4 can be placed on the surface of the support device 1 and embedded in the opening of the side wall of the light shield 2.

[0042] It should be noted that in this embodiment, the vacuum ultraviolet sensor 5 is used to detect ultraviolet light of a specific wavelength passing through the flowing cuvette 4. This embodiment does not limit the specific installation method of the vacuum ultraviolet sensor 5; the vacuum ultraviolet sensor 5 can be, but is not limited to, embedded in the light-emitting aperture.

[0043] Furthermore, the peracetic acid concentration detection device in this embodiment may also include: a signal transmitter 8; the signal transmitter 8 is electrically connected to the vacuum ultraviolet sensor 5. It should be noted that the signal transmitter 8 in this embodiment can transmit the signal from the vacuum ultraviolet sensor 5 to adapt to the backend equipment.

[0044] This embodiment does not limit the specific installation method of the signal transmitter 8. The signal transmitter 8 may be installed on the surface of the support device 1, but is not limited to this embodiment.

[0045] It should be noted that in this embodiment, the liquid tank 6 is used to store peracetic acid disinfectant. The flowing cuvette 4 is connected to the liquid tank 6, and the peracetic acid disinfectant in the liquid tank 6 can be transferred into the flowing cuvette 4. This embodiment does not limit the specific connection method between the flowing cuvette 4 and the liquid tank 6, as long as it ensures that the peracetic acid disinfectant in the liquid tank 6 can be transferred into the flowing cuvette 4. For example, the peracetic acid concentration detection device may also include: a first liquid transfer line 91 and a second liquid transfer line 92; one end of the first liquid transfer line 91 is connected to the liquid tank 6, and the other end is connected to the inlet of the flowing cuvette 4; one end of the second liquid transfer line 92 is connected to the outlet of the flowing cuvette 4, and the other end is connected to the liquid tank 6.

[0046] Furthermore, the peracetic acid concentration detection device in this embodiment may also include: a liquid pump 10; the liquid pump 10 is connected to the liquid tank 6 through a first liquid transmission pipeline 91, and to the inlet of the flow cuvette 4 through another first liquid transmission pipeline 91. It should be noted that the liquid pump 10 in this embodiment can realize the transmission of peracetic acid disinfectant in the first liquid transmission pipeline 91 and the second liquid transmission pipeline 92.

[0047] This embodiment does not limit the specific installation method of the liquid pump 10. The liquid pump 10 may be installed on the surface of the support device 1, but is not limited to this embodiment.

[0048] Furthermore, in this embodiment, the support device 1 may be provided with a first through hole and a second through hole; the first liquid transmission pipeline 91 passes through the first through hole and is connected to the liquid tank 6; the second liquid transmission pipeline 92 passes through the second through hole and is connected to the liquid tank 6.

[0049] Furthermore, in this embodiment, a one-way valve 11 can be installed on the first liquid transfer pipeline 91 between the liquid pump 10 and the liquid tank 6; a photoelectric fluid sensor 12 can be installed on the first liquid transfer pipeline 91 between the liquid pump 10 and the inlet of the flowing cuvette 4. It should be noted that the one-way valve 11 in this embodiment can control the closing and opening of the first liquid transfer pipeline 91. The photoelectric fluid sensor 12 can detect the presence of gas (or peracetic acid disinfectant) in the first liquid transfer pipeline 91, and issue an alarm when gas is detected (or peracetic acid disinfectant is not present).

[0050] Based on the above embodiments, this invention utilizes the characteristic that peracetic acid ions have an absorption peak for ultraviolet light in a specific wavelength band. By controlling the ultraviolet light source 3 to generate ultraviolet light and using the vacuum ultraviolet sensor 5 to sense wavelengths below 200nm, the ultraviolet light absorption peaks of other substances (such as hydrogen peroxide) that may be present in the peracetic acid disinfectant solution are avoided. The influence of other substances that may be present in the solution can be eliminated without other means. Therefore, the vacuum ultraviolet sensor 5 can directly detect the degree of energy level attenuation of ultraviolet light of a specific wavelength after passing through the flowing cuvette 4, thereby determining the peracetic acid concentration of the peracetic acid disinfectant solution in the flowing cuvette 4. At the same time, the flowing cuvette 4 is directly connected to the liquid tank 6, and the ultraviolet light source 3 and the flowing cuvette 4 are placed in a sealed cavity formed by the containment cavity and the vacuum ultraviolet sensor 5, thereby realizing fully automatic closed operation. The entire detection process does not require manual intervention and eliminates interference from environmental and human factors.

[0051] This utility model embodiment also provides a cleaning and disinfection device, including: the peracetic acid concentration detection device as described above.

[0052] Based on the above embodiments, the present invention includes the peracetic acid concentration detection device, and therefore also has the above-mentioned beneficial effects.

[0053] To make this utility model easier to understand, the working principle of the peracetic acid concentration detection device provided in this utility model embodiment will be explained below with reference to specific embodiments.

[0054] This embodiment uses, as follows: Figure 1 The peracetic acid concentration detection device shown uses a low-pressure mercury lamp as its ultraviolet light source 3. This lamp generates ultraviolet light in two wavelengths: 185nm and 254nm. This ultraviolet light irradiates the peracetic acid disinfectant solution in the flowing cuvette 4. The 184nm wavelength is heavily absorbed by peracetic acid ions, so the remaining energy in this wavelength band is positively correlated with the peracetic acid concentration in the solution. The 254nm wavelength is affected by other components in the peracetic acid disinfectant solution. Since the vacuum ultraviolet sensor 5 only senses wavelengths below 200nm, it can only detect 185nm ultraviolet light in this embodiment. This avoids the ultraviolet absorption peaks of other substances (such as hydrogen peroxide) that may be present in the peracetic acid disinfectant solution, and only detects the 185nm ultraviolet absorption peak, thus determining the peracetic acid concentration in the flowing cuvette 4.

[0055] The above provides a detailed description of the peracetic acid concentration detection device and cleaning and disinfection equipment provided by this utility model. For those skilled in the art, based on the ideas of the embodiments of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A peracetic acid concentration detection device, characterized in that, include: It contains a cavity, an ultraviolet light source, a flow cuvette, a vacuum ultraviolet sensor, and a liquid tank; The accommodating cavity is provided with a light-emitting hole; The vacuum ultraviolet sensor is aligned with the light-emitting aperture; the receiving cavity and the vacuum ultraviolet sensor enclose each other to form a sealed cavity; the ultraviolet light source and the flowing cuvette are located in the sealed cavity; the flowing cuvette and the liquid tank are connected. The ultraviolet light source, the flowing cuvette, and the vacuum ultraviolet sensor are arranged sequentially along the ultraviolet light transmission direction.

2. The peracetic acid concentration detection device according to claim 1, characterized in that, Also includes: Reflector; The reflector is located within the sealed cavity; the reflector surrounds the ultraviolet light source and extends toward the flow cuvette.

3. The peracetic acid concentration detection device according to claim 2, characterized in that, The ultraviolet light source is connected to the reflector; the reflector is connected to the receiving cavity.

4. The peracetic acid concentration detection device according to claim 1, characterized in that, Also includes: First liquid transfer line and second liquid transfer line; One end of the first liquid transfer pipeline is connected to the liquid tank, and the other end is connected to the liquid inlet of the flow cuvette. One end of the second liquid transfer pipeline is connected to the outlet of the flow cuvette, and the other end is connected to the liquid tank.

5. The peracetic acid concentration detection device according to claim 4, characterized in that, Also includes: A liquid pump; the liquid pump is connected to the liquid tank through one of the first liquid transmission pipelines and to the inlet of the flow cuvette through another of the first liquid transmission pipelines.

6. The peracetic acid concentration detection device according to claim 5, characterized in that, A one-way valve is provided on the first liquid transmission pipeline between the liquid pump and the liquid tank. A photoelectric fluid sensor is installed on the first liquid transfer pipeline between the liquid pump and the inlet of the flow cuvette.

7. The peracetic acid concentration detection device according to claim 1, characterized in that, Also includes: A signal transmitter; the signal transmitter is electrically connected to the vacuum ultraviolet sensor.

8. The peracetic acid concentration detection device according to claim 1, characterized in that, The ultraviolet light source is a low-pressure mercury lamp or a flashing xenon lamp; And / or, the flow cuvette is a quartz flow cuvette.

9. The peracetic acid concentration detection device according to any one of claims 1 to 8, characterized in that, include: Support device and light shield; the support device is located on top of the liquid tank; The light shield is disposed on the surface of the support device and together with the support device forms the receiving cavity; The support device is provided with the light-emitting hole; the vacuum ultraviolet sensor is embedded in the light-emitting hole; The light shield has an opening on its side wall; the flow cuvette is disposed on the surface of the support device and embedded in the opening.

10. A cleaning and disinfection device, characterized in that, include: The peracetic acid concentration detection device as described in any one of claims 1 to 9.

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