Mixed gas monitoring system and mixed gas proportioning equipment for milk powder production line

Abstract

The utility model provides a mixed gas monitoring system and mixed gas proportioning equipment for a milk powder production line, and the mixed gas monitoring system comprises a measuring device which comprises a temperature sensor, a first pressure sensor, a second pressure sensor, a first flow sensor and a second flow sensor; a collection device; the control device is electrically connected with the acquisition device; the control device can record a temperature value measured by the temperature sensor, a first pressure value measured by the first pressure sensor, a second pressure value measured by the second pressure sensor, a first flow value measured by the first flow sensor and a second flow value measured by the second flow sensor, which are transmitted by the acquisition device; and the display device is electrically connected with the control device. According to the technical scheme, the problem that the historical numerical values of the related parameters of the gas cannot be checked in the related technology is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of milk powder production line equipment, in particular to a mixed gas monitoring system and mixed gas proportioning equipment for a milk powder production line. Background Art

[0002] After the milk powder is produced, a filling machine is used to fill the milk powder into the milk powder can. After the filling is completed, a capping machine is used to seal the cap into the milk powder can. In order to store the milk powder filled in the milk powder can for a longer time, it is necessary to minimize the oxygen content in the milk powder can during the filling and capping process.

[0003] In the related art, in order to reduce the oxygen content in the milk powder can, the method of introducing gas can be adopted. In order to reduce the residual amount of oxygen in the milk powder can, it is necessary to control the relevant parameters of the introduced gas. The relevant parameters of the gas may include pressure, temperature, etc. The pressure is measured by a pressure gauge and the temperature is measured by a thermometer. If the residual oxygen content in the milk powder can is higher than the production requirements, it is necessary to analyze the reasons. Specifically, it is necessary to analyze whether the relevant parameters of the gas meet the production requirements, that is, it is necessary to check the historical values ​​of the gas pressure, temperature and other parameters, but the pressure gauge can only display the instantaneous value of the pressure, and the thermometer can only display the instantaneous value of the temperature. Utility Model Content

[0004] The main purpose of the utility model is to provide a mixed gas monitoring system and mixed gas proportioning equipment for a milk powder production line, so as to solve the problem in the related art that the historical values ​​of relevant parameters of the gas cannot be viewed.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a mixed gas monitoring system for a milk powder production line is provided, comprising: a measuring device, the measuring device comprising a temperature sensor arranged on a carbon dioxide delivery pipe, a first pressure sensor arranged on a carbon dioxide delivery pipe, a second pressure sensor arranged on a nitrogen delivery pipe, a first flow sensor arranged on a nitrogen delivery pipe, and a second flow sensor arranged on a carbon dioxide delivery pipe; a collecting device, the collecting device is electrically connected to the temperature sensor, the first pressure sensor, the second pressure sensor, the first flow sensor, and the second flow sensor; a control device, the control device is electrically connected to the collecting device, and the control device can record the temperature value measured by the temperature sensor, the first pressure value measured by the first pressure sensor, the second pressure value measured by the second pressure sensor, the first flow value measured by the first flow sensor, and the second flow value measured by the second flow sensor transmitted by the collecting device; a display device, the display device is electrically connected to the control device, and the display device can display the temperature value, the first pressure value, the second pressure value, the first flow value, and the second flow value recorded by the control device; a power supply device, the power supply device is electrically connected to the control device.

[0006] Furthermore, the acquisition device includes a first analog quantity collector electrically connected to the control device, the first analog quantity collector includes a first positive input terminal and a first negative input terminal, and the temperature sensor is connected between the first positive input terminal and the first negative input terminal.

[0007] Furthermore, the mixed gas monitoring system also includes a distributor connected between the temperature sensor and the first analog quantity collector.

[0008] Furthermore, the first analog quantity collector also includes a second positive input terminal and a second negative input terminal, and the first pressure sensor is connected between the second positive input terminal and the second negative input terminal; the first analog quantity collector also includes a third positive input terminal and a third negative input terminal, and the second pressure sensor is connected between the third positive input terminal and the third negative input terminal; the first analog quantity collector also includes a fourth positive input terminal and a fourth negative input terminal, and the first flow sensor is connected between the fourth positive input terminal and the fourth negative input terminal; the first analog quantity collector also includes a fifth positive input terminal and a fifth negative input terminal, and the second flow sensor is connected between the fifth positive input terminal and the fifth negative input terminal.

[0009] Furthermore, the mixed gas monitoring system also includes a start button and a stop button, and the start button and the stop button are connected to the control device.

[0010] Furthermore, the mixed gas monitoring system also includes an alarm device connected to the control device, and the control device controls the operation of the alarm device according to the detection signal of the temperature sensor, the detection signal of the first pressure sensor and the detection signal of the second pressure sensor.

[0011] Furthermore, the mixed gas monitoring system also includes a switch, which is connected between the control device and the display device.

[0012] According to another aspect of the utility model, a mixed gas proportioning device is provided, including a mixed gas monitoring system, a mixed gas proportioning machine, a carbon dioxide delivery pipe and a nitrogen delivery pipe, the carbon dioxide delivery pipe is connected to the input end of the mixed gas proportioning machine, the nitrogen delivery pipe is connected to the input end of the mixed gas proportioning machine, and the mixed gas monitoring system is the above-mentioned mixed gas monitoring system.

[0013] Furthermore, the mixed gas proportioning equipment also includes a mixed gas flow sensor and a second analog quantity collector. The mixed gas flow sensor is arranged at the output end of the mixed gas proportioning machine. The second analog quantity collector is electrically connected to the control device. The mixed gas flow sensor can measure the total flow value of the mixed gas flowing out of the mixed gas proportioning machine. The collection device can collect the total flow value of the mixed gas and transmit the total flow value of the mixed gas to the control device.

[0014] Furthermore, the second analog quantity collector includes a sixth positive input terminal and a sixth negative input terminal, and the mixed gas flow sensor is connected between the sixth positive input terminal and the sixth negative input terminal.

[0015] Applying the technical solution of the utility model, the measuring device includes a temperature sensor, a first pressure sensor, a second pressure sensor, a first flow sensor and a second flow sensor. The temperature sensor, the first pressure sensor and the second flow sensor are arranged on the carbon dioxide delivery pipe, and the second pressure sensor and the first flow sensor are arranged on the nitrogen delivery pipe. The acquisition device is electrically connected to the temperature sensor, the first pressure sensor, the second pressure sensor, the first flow sensor and the second flow sensor. The control device is electrically connected to the acquisition device. The temperature value measured by the temperature sensor, the first pressure value measured by the first pressure sensor, the second pressure value measured by the second pressure sensor, the first flow value measured by the first flow sensor and the second flow value measured by the second flow sensor can be transmitted to the control device through the acquisition device, and the control device can transmit the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value to the display device, and the display device can display the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value. The power supply device is electrically connected to the control device. Through the above settings, the temperature sensor can measure the temperature value of the carbon dioxide delivered by the carbon dioxide delivery pipe, the first pressure sensor can measure the first pressure value of the carbon dioxide delivered by the carbon dioxide delivery pipe, the second pressure sensor can measure the second pressure value of the nitrogen delivered by the nitrogen delivery pipe, the first flow sensor can measure the first flow value of the nitrogen delivered by the nitrogen delivery pipe, and the second flow sensor can measure the second flow value of the carbon dioxide delivered by the carbon dioxide delivery pipe. The acquisition device can continuously acquire the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value, and transmit the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value to the control device. The display device can display the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value transmitted by the control device. The power supply device can supply power to the control device, and then the control device can supply power to the acquisition device. Therefore, the technical solution of the present application effectively solves the problem of being unable to view the historical values ​​of the relevant parameters of the gas in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of an embodiment of a mixed gas monitoring system according to the utility model is shown;

[0018] Figure 2 Shows Figure 1 A schematic diagram of the structure of a control device of a mixed gas monitoring system;

[0019] Figure 3 Shows Figure 1 A schematic diagram of the structure of the connection between the first analog quantity collector and the measuring device of the mixed gas monitoring system;

[0020] Figure 4 The structure diagram of the mixed gas proportioning device according to the utility model is shown;

[0021] Figure 5 Shows Figure 4 A schematic diagram of a structure in which a mixed gas flow sensor of a mixed gas proportioning device is connected to a second analog quantity collector;

[0022] Figure 6 Shows Figure 4 Schematic diagram of the structure of the second analog quantity collector of the mixed gas proportioning device.

[0023] The above drawings include the following reference numerals:

[0024] 10. Measuring device; 11. Temperature sensor; 12. First pressure sensor; 13. Second pressure sensor; 14. First flow sensor; 15. Second flow sensor; 20. Collecting device; 21. First analog quantity collector; 211. First positive input terminal; 212. First negative input terminal; 213. Second positive input terminal; 214. Second negative input terminal; 215. Third positive input terminal; 216. Third negative input terminal; 217. Fourth positive input terminal; 218. Fourth negative input terminal; 219, fifth positive input terminal; 2110, fifth negative input terminal; 30, control device; 40, display device; 50, power supply device; 60, distributor; 70, start button; 80, stop button; 90, alarm device; 100, switch; 200, mixed gas proportioning machine; 210, carbon dioxide delivery pipe; 220, nitrogen delivery pipe; 230, mixed gas flow sensor; 240, second analog quantity collector; 241, sixth positive input terminal; 242, sixth negative input terminal. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0028] like Figure 1 and Figure 2As shown, the mixed gas monitoring system of the milk powder production line of this embodiment includes: a measuring device 10, a collecting device 20, a control device 30, a display device 40 and a power supply device 50. The measuring device 10 includes a temperature sensor 11 arranged on the carbon dioxide delivery pipe 210, a first pressure sensor 12 arranged on the carbon dioxide delivery pipe 210, a second pressure sensor 13 arranged on the nitrogen delivery pipe 220, a first flow sensor 14 arranged on the nitrogen delivery pipe 220, and a second flow sensor 15 arranged on the carbon dioxide delivery pipe 210. The collecting device 20 is electrically connected to the temperature sensor 11, the first pressure sensor 12, the second pressure sensor 13, the first flow sensor 14 and the second flow sensor 15. The control device 30 is electrically connected to the collecting device 20, and the control device 30 can record the temperature value measured by the temperature sensor 11, the first pressure value measured by the first pressure sensor 12, the second pressure value measured by the second pressure sensor 13, the first flow value measured by the first flow sensor 14 and the second flow value measured by the second flow sensor 15 transmitted by the collecting device 20. The display device 40 is electrically connected to the control device 30 , and can display the temperature value, the first pressure value, the second pressure value, the first flow value, and the second flow value recorded by the control device 30 . The power supply device 50 is electrically connected to the control device 30 .

[0029] Applying the technical solution of this embodiment, the measuring device 10 includes a temperature sensor 11, a first pressure sensor 12, a second pressure sensor 13, a first flow sensor 14 and a second flow sensor 15. The temperature sensor 11, the first pressure sensor 12 and the second flow sensor 15 are arranged on the carbon dioxide delivery pipe 210, and the second pressure sensor 13 and the first flow sensor 14 are arranged on the nitrogen delivery pipe 220. The acquisition device 20 is electrically connected to the temperature sensor 11, the first pressure sensor 12, the second pressure sensor 13, the first flow sensor 14 and the second flow sensor 15. The control device 30 is electrically connected to the acquisition device 20. The temperature value measured by the temperature sensor 11, the first pressure value measured by the first pressure sensor 12, the second pressure value measured by the second pressure sensor 13, the first flow value measured by the first flow sensor 14, and the second flow value measured by the second flow sensor 15 can be transmitted to the control device 30 through the acquisition device 20, and the control device 30 can transmit the temperature value, the first pressure value, the second pressure value, the first flow value, and the second flow value to the display device 40, and the display device 40 can display the temperature value, the first pressure value, the second pressure value, the first flow value, and the second flow value. The power supply device 50 is electrically connected to the control device 30. Through the above settings, the temperature sensor 11 can measure the temperature value of the carbon dioxide delivered by the carbon dioxide delivery pipe 210, the first pressure sensor 12 can measure the first pressure value of the carbon dioxide delivered by the carbon dioxide delivery pipe 210, the second pressure sensor 13 can measure the second pressure value of the nitrogen delivered by the nitrogen delivery pipe 220, the first flow sensor 14 can measure the first flow value of the nitrogen delivered by the nitrogen delivery pipe 220, and the second flow sensor 15 can measure the second flow value of the carbon dioxide delivered by the carbon dioxide delivery pipe 210. The acquisition device 20 can continuously acquire the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value, and transmit the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value to the control device 30. The display device 40 can display the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value transmitted by the control device 30. The power supply device 50 can supply power to the control device 30, and then the control device 30 can supply power to the acquisition device 20. Therefore, the technical solution of this embodiment effectively solves the problem of being unable to view the historical values ​​of the relevant parameters of the gas in the related art.

[0030] It should be noted that when the temperature value of carbon dioxide increases, carbon dioxide molecules need to occupy a larger space, resulting in a decrease in the number of carbon dioxide molecules per unit volume, that is, a decrease in the concentration of carbon dioxide, which will result in an incorrect ratio of carbon dioxide to nitrogen after the nitrogen and carbon dioxide are mixed. When the pressure value of carbon dioxide decreases, the flow value of carbon dioxide will decrease, which will also affect the ratio of carbon dioxide to nitrogen after the nitrogen and carbon dioxide are mixed. When the pressure value of nitrogen decreases, the flow value of nitrogen will decrease, which will also affect the ratio of carbon dioxide to nitrogen after the nitrogen and carbon dioxide are mixed. By measuring the flow value of carbon dioxide, it can be determined whether the decrease in the pressure value of carbon dioxide is caused by an increase in the gas consumption of carbon dioxide in other equipment. By measuring the flow value of nitrogen, it can be determined whether the decrease in the pressure value of nitrogen is caused by an increase in the gas consumption of nitrogen in other equipment.

[0031] Specifically, the power supply device 50 provides 220V AC power to the control device 30, and the control device 30 can output 24V DC power to supply power to the display device 40, the distributor 60, and the switch 100. The control device 30 can also calculate the total flow value of carbon dioxide and the total flow value of nitrogen, and transmit them to the display device 40. The model of the control device 30 is 6ES7288-1SR20-0AA0. The display device is a display screen. The control device 30 can continuously record the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value, and the display device 40 can display the historical curve of the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value, that is, the display device can not only display the instantaneous value of the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value, but also display the historical value of the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value, so that the operator can view it on the display device 40.

[0032] like Figure 1 and Figure 3 As shown, in this embodiment, the acquisition device 20 includes a first analog quantity collector 21 electrically connected to the control device 30, the first analog quantity collector 21 includes a first positive input terminal 211 and a first negative input terminal 212, and the temperature sensor 11 is connected between the first positive input terminal 211 and the first negative input terminal 212. The temperature sensor 11 is connected to the first analog quantity collector 21 through the first positive input terminal 211 and the first negative input terminal 212, so that the first analog quantity collector 21 can collect the temperature value measured by the temperature sensor 11. The control device 30 can record the temperature value measured by the temperature sensor 11 collected by the first analog quantity collector 21, and the control device 30 can also provide power for the operation of the first analog quantity collector 21.

[0033] Preferably, in the present embodiment, the model of the first analog quantity collector 21 is 6ES7 288-3AM06-0AA0. The 24V direct current output by the control device 30 can also power the first analog quantity collector 21. It should be noted that when a pressure gauge is used to measure pressure and a thermometer is used to measure temperature in the prior art, although the operator can record the values ​​of multiple different time periods, the operator generally records the values ​​at certain time intervals, which makes it necessary to check the pressure value and temperature value within a period of time, and some data cannot be found. The first analog quantity collector 21 of the present application can continuously collect temperature values, first pressure values, second pressure values, first flow values ​​and second flow values, and transmit the temperature values, first pressure values, second pressure values, first flow values ​​and second flow values ​​to the control device 30.

[0034] like Figure 3 As shown, in this embodiment, the mixed gas monitoring system also includes a distributor 60, which is connected between the temperature sensor 11 and the first analog quantity collector 21. The distributor 60 can convert the output signal of the temperature sensor 11 into a signal that can be recognized and processed by the first analog quantity collector 21. The distributor 60 can also process the output signal of the temperature sensor 11 to ensure the quality and reliability of the output signal of the temperature sensor 11. The distributor 60 can also prevent the first analog quantity collector 21 and the temperature sensor 11 from being affected by electrical noise, voltage fluctuations, electromagnetic interference and other factors, thereby ensuring the normal operation of the first analog quantity collector 21 and the temperature sensor 11, and further ensuring the normal operation of the mixed gas monitoring system.

[0035] Preferably, a distributor is also provided between the first pressure sensor 12, the second pressure sensor 13, the first flow sensor 14, the second flow sensor 15 and the first analog quantity collector 21. When measuring, the temperature sensor 11, the first pressure sensor 12, the second pressure sensor 13, the first flow sensor 14 and the second flow sensor 15 can be powered by the distributor 60 or by an external power supply.

[0036] like Figure 1 and Figure 3As shown, in this embodiment, the first analog quantity collector 21 also includes a second positive input terminal 213 and a second negative input terminal 214, and the first pressure sensor 12 is connected between the second positive input terminal 213 and the second negative input terminal 214. The first analog quantity collector 21 also includes a third positive input terminal 215 and a third negative input terminal 216, and the second pressure sensor 13 is connected between the third positive input terminal 215 and the third negative input terminal 216. The first analog quantity collector 21 also includes a fourth positive input terminal 217 and a fourth negative input terminal 218, and the first flow sensor 14 is connected between the fourth positive input terminal 217 and the fourth negative input terminal 218. The first analog quantity collector 21 also includes a fifth positive input terminal 219 and a fifth negative input terminal 2110, and the second flow sensor 15 is connected between the fifth positive input terminal 219 and the fifth negative input terminal 2110. The first pressure sensor 12 is connected to the first analog quantity collector 21 through the second positive input terminal 213 and the second negative input terminal 214, so that the first analog quantity collector 21 can collect the first pressure value. The second pressure sensor 13 is connected to the first analog quantity collector 21 through the third positive input terminal 215 and the third negative input terminal 216, so that the first analog quantity collector 21 can collect the second pressure value. The first flow sensor 14 is connected to the first analog quantity collector 21 through the fourth positive input terminal 217 and the fourth negative input terminal 218, so that the first analog quantity collector 21 can collect the first flow value. The second flow sensor 15 is connected to the first analog quantity collector 21 through the fifth positive input terminal 219 and the fifth negative input terminal 2110, so that the first analog quantity collector 21 can collect the second flow value.

[0037] like Figure 2 As shown, in this embodiment, the mixed gas monitoring system further includes a start button 70 and a stop button 80, and the start button 70 and the stop button 80 are connected to the control device 30. The start button 70 and the stop button 80 can control the operation and stop of the mixed gas monitoring system.

[0038] Preferably, the mixed gas monitoring system further includes an air switch, and a start button 70 and a stop button 80 are connected in parallel between the air switch and the control device 30 .

[0039] like Figure 2As shown, in this embodiment, the mixed gas monitoring system further includes an alarm device 90 connected to the control device 30, and the control device 30 controls the alarm device 90 to operate according to the detection signal of the temperature sensor 11, the detection signal of the first pressure sensor 12, and the detection signal of the second pressure sensor 13. When the detection signal of the temperature sensor 11 is abnormal, or when the detection signal of the first pressure sensor 12 is abnormal, or when the detection signal of the second pressure sensor 13 is abnormal, the alarm device 90 can issue an alarm prompt to prompt the operator to check the temperature value, the first pressure value, the second pressure value, the first flow value, and the second flow value on the display device 40.

[0040] It should be noted that the abnormal detection signal of the temperature sensor 11 means that the temperature value is lower than the preset temperature value. The abnormal detection signal of the first pressure sensor 12 means that the first pressure value is lower than the first pressure-temperature preset value. The abnormal detection signal of the second pressure sensor 13 means that the second pressure value is lower than the second pressure-temperature preset value. The alarm device 90 includes an alarm light.

[0041] like Figure 1 As shown, in this embodiment, the mixed gas monitoring system further includes a switch 100, which is connected between the control device 30 and the display device 40. The switch 100 can transmit the temperature value, the first pressure value, the second pressure value, the first flow value, and the second flow value recorded by the control device 30 to the display device 40, so that the display device 40 can display the temperature value, the first pressure value, the second pressure value, the first flow value, and the second flow value.

[0042] Preferably, the mixed gas monitoring system further comprises a manufacturing execution system, and the manufacturing execution system is connected to the switch 100. The switch 100 can transmit signals to the manufacturing execution system. The manufacturing execution system can be connected to multiple display screens, so that the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value can be viewed at multiple locations. The switch 100 is connected to the control device 30 via a network cable.

[0043] like Figures 4 to 6As shown, the mixed gas proportioning equipment of this embodiment includes a mixed gas monitoring system, a mixed gas proportioning machine 200, a carbon dioxide delivery pipe 210 and a nitrogen delivery pipe 220, the carbon dioxide delivery pipe 210 is connected to the input end of the mixed gas proportioning machine 200, the nitrogen delivery pipe 220 is connected to the input end of the mixed gas proportioning machine 200, and the mixed gas monitoring system is the above-mentioned mixed gas monitoring system. When the above-mentioned mixed gas monitoring system is in use, the display device 40 can display the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value recorded by the control device 30, so that the operator can view the relevant parameters of carbon dioxide and nitrogen. The mixed gas proportioning equipment with the above-mentioned mixed gas monitoring system also has the above-mentioned advantages. The mixed gas proportioning machine 200 can prepare carbon dioxide and nitrogen into the required proportion. The carbon dioxide delivery pipe 210 and the nitrogen delivery pipe 220 can respectively deliver nitrogen and carbon dioxide to the mixed gas proportioning machine 200.

[0044] It should be noted that, in the present embodiment, the mixed gas proportioning equipment also includes a carbon dioxide tank and a nitrogen tank, the carbon dioxide tank can deliver carbon dioxide to the mixed gas proportioning machine 200 through the carbon dioxide delivery pipe 210, and the nitrogen tank can deliver nitrogen to the mixed gas proportioning machine 200 through the nitrogen delivery pipe 220. The mixed gas includes carbon dioxide and nitrogen. When the mixed gas ratio does not meet the requirements, the oxygen content in the milk powder tank cannot be reduced to the production requirements, which will affect the product quality and production efficiency. When the gas ratio does not meet the requirements, the reasons need to be analyzed. When the gas ratio does not meet the requirements, that is, when the temperature value is abnormal or the first pressure value is abnormal, the second pressure value is abnormal, the first flow value is abnormal, and the second flow value is abnormal, the alarm device 90 will also issue an alarm prompt, and the display device displays the alarm information. The thermometer and pressure gauge in the prior art can only display the instantaneous values ​​of the measured values ​​of the relevant parameters of multiple gases, which makes it difficult to analyze the reasons why the gas ratio does not meet the requirements. Through the mixed gas proportioning device of this embodiment, the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value can be collected, and the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value can be displayed on the display device, so that the operator can view the data and analyze the reasons why the gas proportion does not meet the requirements. After determining the reasons why the gas proportion does not meet the requirements, the operator clicks the button on the display screen to send relevant instructions to the control device 30 to adjust the values ​​of one or more of the temperature value, the first pressure value, the second pressure value, the first flow value and the second flow value to ensure that the mixed gas meets the requirements.

[0045] like Figure 5 and Figure 6As shown, in this embodiment, the mixed gas proportioning device also includes a mixed gas flow sensor 230 and a second analog quantity collector 240. The mixed gas flow sensor 230 is arranged at the output end of the mixed gas proportioning machine 200. The second analog quantity collector 240 is electrically connected to the control device 30. The mixed gas flow sensor 230 can measure the total flow value of the mixed gas flowing out of the mixed gas proportioning machine 200. The collection device 20 can collect the total flow value of the mixed gas and transmit the total flow value of the mixed gas to the control device 30. The mixed gas flow sensor can measure the total flow value of the mixed gas flowing out of the mixed gas proportioning machine and transmit it to the control device through the second analog quantity collection device.

[0046] Preferably, in this embodiment, the model of the second analog quantity collector 240 is 6ES7 288-3AM06-0AA0. The 24V DC output by the control device 30 can also power the second analog quantity collector 240. The ratio of the second flow value to the total flow value of the mixed gas is defined as the concentration value of carbon dioxide.

[0047] like Figure 5 As shown, in this embodiment, the second analog quantity collector 240 includes a sixth positive input terminal 241 and a sixth negative input terminal 242, and the mixed gas flow sensor 230 is connected between the sixth positive input terminal 241 and the sixth negative input terminal 242. The mixed gas flow sensor 230 is connected to the second analog quantity collector through the sixth positive input terminal 241 and the sixth negative input terminal 242.

[0048] Preferably, the mixed gas proportioning device further comprises a carbon dioxide water bath liquid level sensor. The second analog quantity collector comprises a seventh positive input terminal and a seventh negative input terminal, and the carbon dioxide water bath liquid level sensor is connected between the seventh positive input terminal and the seventh negative input terminal. The carbon dioxide water bath liquid level sensor is connected to the second analog quantity collector via the seventh positive input terminal and the seventh negative input terminal.

[0049] It should be noted that the carbon dioxide water bath level sensor is installed on the carbon dioxide heating device. There is water in the carbon dioxide heating device, and the carbon dioxide heating device can heat the water and heat the carbon dioxide through the water to ensure that the temperature of the carbon dioxide meets the preset temperature value. The carbon dioxide water bath level sensor can record the water level in the carbon dioxide heating device. When the water level is lower than the carbon dioxide water bath level sensor, the alarm device will sound an alarm to remind the operator to add water.

[0050] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0051] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0052] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0053] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mixed gas monitoring system for a milk powder production line, characterized in that: include: A measuring device (10), the measuring device (10) comprising a temperature sensor (11) arranged on a carbon dioxide delivery pipe (210), a first pressure sensor (12) arranged on the carbon dioxide delivery pipe (210), a second pressure sensor (13) arranged on a nitrogen delivery pipe (220), a first flow sensor (14) arranged on the nitrogen delivery pipe (220), and a second flow sensor (15) arranged on the carbon dioxide delivery pipe (210); a collection device (20), the collection device (20) being electrically connected to the temperature sensor (11), the first pressure sensor (12), the second pressure sensor (13), the first flow sensor (14), and the second flow sensor (15); a control device (30), the control device (30) being electrically connected to the acquisition device (20), the control device (30) being capable of recording the temperature value measured by the temperature sensor (11), the first pressure value measured by the first pressure sensor (12), the second pressure value measured by the second pressure sensor (13), the first flow value measured by the first flow sensor (14), and the second flow value measured by the second flow sensor (15) transmitted by the acquisition device (20); a display device (40), the display device (40) being electrically connected to the control device (30), the display device (40) being capable of displaying the temperature value, the first pressure value, the second pressure value, the first flow value, and the second flow value recorded by the control device (30); A power supply device (50), wherein the power supply device (50) is electrically connected to the control device (30).

2. The mixed gas monitoring system according to claim 1, characterized in that: The acquisition device (20) comprises a first analog quantity collector (21) electrically connected to the control device (30), the first analog quantity collector (21) comprising a first positive input terminal (211) and a first negative input terminal (212), and the temperature sensor (11) is connected between the first positive input terminal (211) and the first negative input terminal (212).

3. The mixed gas monitoring system according to claim 2, characterized in that: The mixed gas monitoring system further comprises a distributor (60), wherein the distributor (60) is connected between the temperature sensor (11) and the first analog quantity collector (21).

4. The mixed gas monitoring system according to claim 2, characterized in that: The first analog quantity collector (21) further comprises a second positive input terminal (213) and a second negative input terminal (214), and the first pressure sensor (12) is connected between the second positive input terminal (213) and the second negative input terminal (214); the first analog quantity collector (21) further comprises a third positive input terminal (215) and a third negative input terminal (216), and the second pressure sensor (13) is connected between the third positive input terminal (215) and the third negative input terminal (216); the first analog quantity collector (21) further comprises a fourth positive input terminal (217) and a fourth negative input terminal (218), and the first flow sensor (14) is connected between the fourth positive input terminal (217) and the fourth negative input terminal (218); the first analog quantity collector (21) further comprises a fifth positive input terminal (219) and a fifth negative input terminal (2110), and the second flow sensor (15) is connected between the fifth positive input terminal (219) and the fifth negative input terminal (2110).

5. The mixed gas monitoring system according to any one of claims 1 to 4, characterized in that: The mixed gas monitoring system further comprises a start button (70) and a stop button (80), wherein the start button (70) and the stop button (80) are connected to the control device (30).

6. The mixed gas monitoring system according to any one of claims 1 to 4, characterized in that: The mixed gas monitoring system further comprises an alarm device (90) connected to the control device (30), wherein the control device (30) controls the operation of the alarm device (90) according to a detection signal of the temperature sensor (11), a detection signal of the first pressure sensor (12), and a detection signal of the second pressure sensor (13).

7. The mixed gas monitoring system according to any one of claims 1 to 4, characterized in that: The mixed gas monitoring system further comprises a switch (100), wherein the switch (100) is connected between the control device (30) and the display device (40).

8. A mixed gas proportioning device, comprising a mixed gas monitoring system, a mixed gas proportioning machine (200), a carbon dioxide delivery pipe (210) and a nitrogen delivery pipe (220), characterized in that: The carbon dioxide delivery pipe (210) is connected to the input end of the mixed gas proportioning machine (200), the nitrogen delivery pipe (220) is connected to the input end of the mixed gas proportioning machine (200), and the mixed gas monitoring system is the mixed gas monitoring system according to any one of claims 1 to 7.

9. The mixed gas proportioning device according to claim 8, characterized in that: The mixed gas proportioning device further comprises a mixed gas flow sensor (230) and a second analog quantity collector (240); the mixed gas flow sensor (230) is arranged at the output end of the mixed gas proportioning machine (200); the second analog quantity collector (240) is electrically connected to the control device (30); the mixed gas flow sensor (230) is capable of measuring the total flow value of the mixed gas flowing out of the mixed gas proportioning machine (200); the collecting device (20) is capable of collecting the total flow value of the mixed gas and transmitting the total flow value of the mixed gas to the control device (30).

10. The mixed gas proportioning equipment according to claim 9, characterized in that: The second analog quantity collector (240) comprises a sixth positive input terminal (241) and a sixth negative input terminal (242), and the mixed gas flow sensor (230) is connected between the sixth positive input terminal (241) and the sixth negative input terminal (242).

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