Water supplementing device of air compressor for dairy product production and air compressor system

Abstract

The utility model belongs to the technical field of air compressor water supply, and particularly relates to a water supplementing device of an air compressor for dairy product production and an air compressor system. A main machine water return pipeline is provided with a water return control valve, a first water temperature detection piece is arranged on the main machine water return pipeline, and an outlet of a water inlet assembly is connected with the main machine water return pipeline; an inlet of the water outlet assembly is connected with a bottom outlet of the water-gas separator, a second water temperature detection piece is arranged at the bottom outlet of the water-gas separator, and the water outlet assembly is provided with a second control valve. By means of the characteristics, automatic water replacement of the air compressor is achieved, manual monitoring and manual water replacement are not needed, meanwhile, it is guaranteed that cooling water in the water-gas separator can be continuously replaced through automatic water replacement of the air compressor, scaling and microorganism breeding can be avoided, certainly, the temperature of water entering the main machine can meet the use requirement all the time, and the service life of the main machine is prolonged. Therefore, host cooling requirements can be met, and high-temperature alarm of the host is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of air compressor water supply technology, and specifically relates to a water replenishment device and air compressor system for an air compressor used in dairy production. Background Technology

[0002] Traditional air compressors often use compressed oil as the compression medium. However, in the dairy production industry, compressed air produced by air compressors using compressed oil contains oil and water, which affects the safety of dairy production. To solve the problem of oil and water in compressed air when it comes into contact with food, existing technologies often use oil-free and water-lubricated compressors to produce oil-free and water-free compressed air, ensuring cleanliness and hygiene in the dairy production process.

[0003] In the prior art, the structure of an oil-free water-lubricated compressor is as follows: Figure 1 As shown, the working process involves air being filtered by an air filter and then entering the main unit through the intake pipe. Simultaneously, return water, cooled by the cooler, enters the main unit through the return water pipe. The return water and air mix into a water mist inside the main unit and are compressed. The compressed water-air mixture enters the water-air separator's water-air containment device for physical separation. The compressed air is discharged through the minimum pressure valve, and the supply flow is regulated by a switch. The water remaining in the water-air containment device is cooled by the cooler, and the cooled return water is returned to the main unit for recycling. However, the water gradually decreases during recycling. The traditional method of water replenishment for existing oil-free water-lubricated compressors involves manually filling the water-air containment device with pure water. During compressor operation, the water in the water-air containment device is cooled by the main unit's lubrication radiator and then returned for recycling. This water replenishment method has the following problems:

[0004] (1) The water in the water-air separator is reused for a long time, which can easily cause scale to form on the parts that come into contact with the oil-free water-lubricated compressor and microorganisms to grow in the water-air separator, affecting food safety.

[0005] (2) It is necessary to manually monitor the water lubrication status in the host in real time. When there is a water shortage, it is necessary to manually replenish the water in time, which results in high labor costs. At the same time, manual monitoring is prone to negligence and there is a risk of water shortage, which affects the normal operation of the equipment.

[0006] (3) Due to the long-term use of return water by the host, the temperature of the return water gradually rises. Even with the cooling of the cooler, the temperature of the return water is high due to the long-term heat accumulation, which makes the host prone to high temperature alarm. Summary of the Invention

[0007] Based on the aforementioned technical needs, this application provides a water replenishment device and air compressor system for an air compressor used in dairy production, in order to solve the problems of scale buildup and microbial growth in the air compressor, high cost due to manual monitoring of water replenishment, risk of water outage, and high temperature of the return water during circulation, which easily triggers high temperature alarms in the existing water replenishment methods.

[0008] A water supply device for an air compressor used in dairy production is disclosed. The air compressor includes a main unit, a water-air separator, and a main unit return water pipeline. It includes an inlet water assembly, an outlet water assembly, a first water temperature sensor, and a second water temperature sensor. The main unit return water pipeline is equipped with a return water control valve. The first water temperature sensor is located in the main unit return water pipeline, between the main unit and the return water control valve. The outlet of the inlet water assembly is connected to the main unit return water pipeline and is located between the main unit and the first water temperature sensor. The inlet water assembly has a first control valve. The inlet of the outlet water assembly is connected to the bottom outlet of the water-air separator, and the bottom outlet of the water-air separator is equipped with the second water temperature sensor. The outlet water assembly has a second control valve. The return water control valve, the first control valve, and the second control valve are all electrically connected to the first water temperature sensor and also electrically connected to the second water temperature sensor.

[0009] Preferably, the water inlet assembly further includes a water inlet pipe, an RO reverse osmosis filter, and a security filter. One end of the water inlet pipe is the water inlet end, and the other end is connected to the main unit's return water pipeline. In the direction of water flow in the water inlet pipe, the RO reverse osmosis filter, the security filter, and the first control valve are sequentially arranged on the water inlet pipe.

[0010] Preferably, the water outlet assembly further includes a water outlet pipe and an air-cooled storage tank. One end of the water outlet pipe is connected to the bottom outlet of the water-air separator, and the other end is connected to the inlet of the air-cooled storage tank. The second control valve is disposed on the water outlet pipe, and the outlet of the air-cooled storage tank is connected to the inlet end of the water inlet pipe.

[0011] Preferably, the water outlet assembly further includes a bypass pipe and a third control valve. Both ends of the bypass pipe are connected to the water outlet pipe, and both ends of the bypass pipe are located at the two ends of the second control valve. The third control valve is disposed on the bypass pipe.

[0012] Preferably, the water outlet assembly further includes a fourth control valve, a greening pipe, a greening pool, and a first filter. The fourth control valve is disposed on the water outlet pipe. One end of the greening pipe is connected to the water outlet pipe and is located between the fourth control valve and the second control valve, and the other end is connected to the greening pool. The first filter is disposed on the greening pipe.

[0013] Preferably, the outlet of the air-cooled temporary storage tank is connected to the inlet end of the water inlet pipe through a recycling pipe, and a fifth control valve is provided on the recycling pipe. The air-cooled temporary storage tank has a third water temperature detection device, and the third water temperature detection device and the fifth control valve are electrically connected.

[0014] Preferably, the water inlet assembly further includes a tap water inlet pipe and a sixth control valve disposed on the tap water inlet pipe, the outlet of the tap water inlet pipe being connected to the inlet end of the inlet pipe, and the third water temperature detection element being electrically connected to the sixth control valve.

[0015] Preferably, the main unit's return water pipeline is further provided with a second filter, and the first water temperature detection element is located between the second filter and the main unit.

[0016] An air compressor system includes a water supply device for an air compressor used in dairy production as described in any of the preceding claims.

[0017] By adopting the above technical solution, compared with the prior art, this application has at least the following beneficial effects:

[0018] The first water temperature sensor detects the return water temperature to determine when to start water replacement, and the second water temperature sensor detects the discharge water temperature to determine when to end water replacement. When there is little return water in the air compressor, the return water temperature will rise rapidly until the first water temperature sensor is triggered. Therefore, this method can also monitor the risk of water shortage. The return water control valve, the first control valve, and the second control valve, which are electrically connected to the first and second water temperature sensors, can realize automatic water replacement of the air compressor without manual monitoring or manual water replacement (replenishment). This effectively reduces labor costs and avoids the risk of water shortage caused by negligence in manual monitoring, ensuring the normal operation of the air compressor. Meanwhile, by automatically replacing the high-temperature return water in the air compressor with cooling water that has only been used once, the return water in the air compressor is replaced with cooling water that has only been used once. This avoids the long-term reuse of the return water in the air compressor, ensuring that the cooling water in the air compressor is constantly replaced and preventing prolonged use. This also prevents scaling on the parts in contact with the oil-free water-lubricated compressor and the growth of microorganisms in the air compressor, thus ensuring clean and hygienic dairy production. Of course, by detecting the return water temperature to determine when to start water replacement, the temperature of the water entering the main unit can be guaranteed to meet the usage requirements. Even if the return water temperature gradually rises, by replacing the high-temperature return water in the air compressor with cooling water that has only been used once, the high-temperature return water is prevented from continuing to enter the main unit and causing the main unit to easily overheat and alarm. The cooling water that has been used once is cooled by the cooler and then enters the main unit for continued use through the main unit's return water pipeline. Since this part of the water has not been circulated for a long time, that is, it has not accumulated heat for a long time and its temperature is low, thus meeting the cooling needs of the main unit and preventing the main unit from easily overheating and alarming. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an oil-free water-lubricated compressor in the prior art;

[0020] Figure 2 This is a schematic diagram of the water supply device for an air compressor used in dairy production disclosed in this application.

[0021] In the diagram: Main unit 110, air filter 111, air inlet pipe 112, water-air separator 120, water-air containment device 121, water level monitoring device 122, minimum pressure valve 123, regulating switch 124, cooler 130, main unit return water pipe 140, second filter 141, water inlet assembly 200, first control valve 210, water inlet pipe 220, RO reverse osmosis filter 230, security filter 240, tap water inlet pipe 250 The system includes: sixth control valve 251, water outlet assembly 300, second control valve 310, water outlet pipe 320, air-cooled temporary storage tank 330, third water temperature detection device 331, bypass pipe 340, third control valve 341, fourth control valve 350, greening pipe 360, greening pool 370, first filter 380, recovery pipe 390, fifth control valve 391, first water temperature detection device 400, second water temperature detection device 500, and return water control valve 600. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of this application will be further described below with reference to the accompanying drawings of the embodiments, and this application is not limited to the following specific implementation methods.

[0023] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "inner," "outer," "left," "right," "front," "rear," "top," and "bottom" indicate directions or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0024] The following is in conjunction with the appendix Figures 1 to 2 The present application will be further described in detail with reference to specific embodiments.

[0025] This application discloses a water supply device for an air compressor used in dairy product manufacturing, used to supply water to the air compressor (oil-free water-lubricated compressor) used in dairy product manufacturing. Please refer to... Figure 1 In the prior art, the air compressor mainly includes a main unit 110, an air filter 111, an air inlet pipe 112, a water-air separator 120, a water-air containment device 121, a water level monitoring device 122, a minimum pressure valve 123, a regulating switch 124, a cooler 130, and a main unit return water pipe 140. The working process is that air is filtered by the air filter 111 and enters the main unit 110 through the air inlet pipe 112. At the same time, the return water cooled by the cooler 130 enters the main unit 110 through the main unit return water pipe 140. The return water and air are mixed into water mist inside the main unit 110 and compressed. The compressed water-air mixture enters the water-air containment device 121 of the water-air separator 120 for physical separation. The compressed air is discharged through the minimum pressure valve 123 and the supply flow is adjusted by the regulating switch 124. The water remaining in the water-air containment device 121 is cooled by the cooler 130, and the cooled return water is returned to the main unit 110 for recycling.

[0026] In the above process, the water will gradually decrease during the recycling process. Currently, the timing of water replenishment is mainly determined by manually observing the water level monitoring device 122 and manually filling the water vapor containment device 121 with pure water. However, the timing of water replenishment and the manual water replenishment have the technical problems described in the background art.

[0027] Please refer to Figure 2 The water replenishment device (hereinafter referred to as the water replenishment device) for an air compressor used in dairy production disclosed in this application includes an inlet water assembly 200, an outlet water assembly 300, a first water temperature sensor 400, and a second water temperature sensor 500. A return water control valve 600 is installed on the main unit return water pipeline 140. The first water temperature sensor 400 is located in the main unit return water pipeline 140 and between the main unit 110 and the return water control valve 600. During normal operation, the return water cooled by the cooler 130 enters the main unit 110 through the main unit return water pipeline 140. The return water and air mix and are compressed inside the main unit 110. In this application, the return water is cooled by the cooler 130... Before the return water enters the main unit 110 through the main unit return water pipe 140, it is first tested by the first water temperature detection device 400. If the water temperature is too high (an upper limit can be set, such as 80℃), it means that the return water cooled by the cooler 130 is unlikely to meet the cooling requirements of the main unit 110, resulting in poor cooling effect. Therefore, the return water needs to be closed by the return water control valve 600 so that the return water can enter the main unit 110 through the main unit return water pipe 140. Then, cooler cooling water (pure water) is introduced into the main unit 110 through the water inlet component 200 to meet the cooling requirements of the main unit 110, thus achieving a high cooling effect for the main unit 110.

[0028] Specifically, the outlet of the water inlet assembly 200 is connected to the main unit return water pipe 140 and is located between the main unit 110 and the first water temperature detection element 400. The water inlet assembly 200 has a first control valve 210. As mentioned above, the water inlet assembly 200 introduces cooler water into the main unit 110. That is, if the first water temperature detection element 400 detects that the water temperature is too high, the return water control valve 600 is closed and the first control valve 210 is opened, so that the cooler water in the water inlet assembly 200 enters the main unit 110 to meet the cooling needs of the main unit 110 and prevent the high-temperature return water from continuing to enter the main unit 110, which would cause the main unit 110 to easily trigger a high temperature alarm.

[0029] At this time, the return water in the air compressor has a high temperature due to the accumulation of heat over a long period of time. Furthermore, considering that this return water has been circulated for a certain period, continued use would lead to scale buildup on the components it contacts and the growth of microorganisms inside the water-air separator 120. Therefore, it is appropriate to replace the return water with incoming water at this point. Specifically, the inlet of the water outlet component 300 is connected to the bottom outlet of the water-air separator 120. The water outlet component 300 has a second control valve 310. If the first water temperature sensor 400 detects that the water temperature is too high, it simultaneously opens the second control valve 310, allowing the high-temperature return water in the water-air separator 120 to be discharged through the water outlet component 300. Since water enters from the main unit 110 side through the water inlet component 200, the water pressure inside the system (air compressor) is relatively high. This water pressure is precisely what allows the high-temperature return water in the water-air separator 120 to be discharged through the water outlet component 300.

[0030] The bottom outlet of the water-air separator 120 is equipped with the second water temperature sensor 500. Since the cooling water entering the main unit 110 through the water inlet assembly 200 enters the water-air separator 120 after one operation, and because this cooling water is only used once in the main unit 110, its temperature change is small and sufficient for continued use. However, since the second control valve 310 is open at this time, and if the second control valve 310 remains open, it will result in waste of this cooling water. Therefore, the second water temperature sensor 500 needs to detect the temperature of the discharged water. If the temperature of the discharged water is low (a lower limit can be set, for example, 25℃), then... The high-temperature return water in the open water-air separator 120 has been largely or even completely discharged. If discharge continues, the cooling water that has undergone one operation will be discharged. Therefore, when the second water temperature detector 500 detects that the discharged water temperature is low, it controls the return water control valve 600 to open and the first control valve 210 and the second control valve 310 to close. This allows the cooling water that has undergone one operation to be cooled by the cooler 130 and then enter the main unit 110 through the main unit return water pipe 140 for continued use. Since this part of the water has not been circulated for a long time, that is, it has not accumulated heat for a long time and its temperature is low. Therefore, it can meet the cooling needs of the main unit 110 and prevent the main unit 110 from easily triggering a high temperature alarm.

[0031] Meanwhile, the above process realizes a water replacement process, replacing the high-temperature return water in the water-air separator 120 with cooling water that has only been used once. This avoids the long-term reuse of the return water in the water-air separator 120, ensuring that it can be replaced once every certain period of time. This can prevent scale buildup on the parts in contact with the oil-free water-lubricated compressor and the growth of microorganisms in the water-air separator 120, thereby ensuring clean and hygienic dairy product production.

[0032] Of course, the return water control valve 600, the first control valve 210 and the second control valve 310 are all electrically connected to the first water temperature detection element 400 and the second water temperature detection element 500. That is to say, the return water control valve 600, the first control valve 210 and the second control valve 310 are electrically connected to both the first water temperature detection element 400 and the second water temperature detection element 500 to realize signal transmission and action.

[0033] The working process of the water replenishment device disclosed in this application is as follows: Before the return water cooled by the cooler 130 enters the host 110 through the host return water pipe 140, it first passes through the first water temperature detection element 400 to detect the water temperature. If the water temperature is too high (an upper limit can be set, such as 80℃), the return water control valve 600 is closed and the first control valve 210 and the second control valve 310 are opened, so that the cooler water in the inlet water assembly 200 enters the host 110. At the same time, the hotter return water in the water-air separator 120 is discharged through the outlet water assembly 300. Since the host 110 receives water through the inlet water assembly 200 on one side and drains water through the outlet water assembly 300 on the other side, the pressure in the system can be balanced. Meanwhile, the temperature of the discharged water is detected by the second water temperature sensor 500. If the temperature of the discharged water is low, it indicates that most or all of the high-temperature return water in the water-air separator 120 has been discharged. In this case, the return water control valve 600 is opened, and the first control valve 210 and the second control valve 310 are both closed. This allows the cooling water, after one operation, to be cooled by the cooler 130 and then enter the main unit 110 through the main unit return water pipe 140 for continued use. This cycle continues, continuously replacing the cooling water in the water-air separator 120 and enabling automatic water replacement for the air compressor.

[0034] In this application, the return water temperature is detected by the first water temperature detector 400 to determine the start time of water replacement, and the discharge water temperature is detected by the second water temperature detector 500 to determine the end time of water replacement. When there is little return water in the air compressor, the temperature of the return water will rise rapidly until the first water temperature detector 400 is triggered. Therefore, this method can also monitor the risk of water shortage. The return water control valve 600, the first control valve 210, and the second control valve 310, which are electrically connected to the first water temperature detector 400 and the second water temperature detector 500, can realize the automatic water replacement of the air compressor without manual monitoring or manual water replacement (replenishment). This effectively reduces labor costs and avoids the risk of water shortage caused by negligence in manual monitoring, ensuring the normal operation of the air compressor. Meanwhile, by automatically replacing the high-temperature return water in the air compressor 120 with cooling water that has only been used once, the return water in the air compressor 120 is replaced with cooling water that has only been used once. This avoids the long-term reuse of the return water in the air compressor 120, ensuring that the cooling water in the air compressor 120 is constantly replaced and preventing prolonged use. This also prevents scaling on the parts in contact with the oil-free water-lubricated compressor and the growth of microorganisms in the air compressor 120, thus ensuring clean and hygienic dairy production. Of course, by detecting the return water temperature to determine when to start water replacement, the temperature of the water entering the main unit 110 can be ensured to meet the usage requirements. Even if the return water temperature gradually rises, the water temperature will be controlled by the air compressor 120. The high-temperature return water in the compressor 120 is replaced with cooling water that has only been used once, preventing the high-temperature return water from continuing to enter the main unit 110 and causing the main unit 110 to easily trigger a high-temperature alarm. The cooling water that has been used once is cooled by the cooler 130 and then enters the main unit 110 through the main unit return water pipe 140 for continued use. Since this part of the water has not been circulated for a long time, that is, it has not accumulated heat for a long time and its temperature is low, it can meet the cooling requirements of the main unit 110 and prevent the main unit 110 from easily triggering a high-temperature alarm. In other words, through the automatic water replacement of the air compressor, the temperature of the water entering the main unit 110 can always meet the usage requirements.

[0035] It should be noted that the return water temperature is detected by the first water temperature sensor 400 to determine the start time of water replacement. The detection upper limit of the first water temperature sensor 400 can be set relatively low, for example, 40℃. The return water will reach 40℃ through heat accumulation in a shorter time of circulation in the air compressor, and then water replacement will be performed. In other words, by setting the detection upper limit of the first water temperature sensor 400 to a lower value, the water replacement frequency can be increased, so that the cooling water in the water-air separator 120 is replaced in a shorter time of circulation. This further ensures that the cooling water in the water-air separator 120 can be continuously replaced, avoiding prolonged use. This can prevent scaling of the parts in contact with the oil-free water-lubricated compressor and the growth of microorganisms in the water-air separator 120, thereby ensuring clean and hygienic dairy product production.

[0036] In this application, the cooling water supplied to the main unit 110 through the water inlet assembly 200 should be pure water. However, using purchased pure water, along with the intermediate steps of pure water transportation, would result in high costs. Therefore, in this application, the water inlet assembly 200 further includes a water inlet pipe 220, an RO reverse osmosis filter 230, and a security filter 240. One end of the water inlet pipe 220 is the water inlet, and the other end is connected to the main unit's return water pipe 140. In the direction of water flow in the water inlet pipe 220, the RO reverse osmosis filter... The reverse osmosis filtration device 230, the security filter 240, and the first control valve 210 are sequentially arranged on the inlet pipe 220. The inlet end of the inlet pipe 220 can be connected to the tap water supply pipeline (such as the tap water inlet pipe 250 mentioned below) or to the recycled water in the plant area. This application does not limit this connection. The RO reverse osmosis filtration device 230 and the security filter 240 can purify tap water or recycled water to meet the requirements of the air compressor, thereby avoiding reliance on purchased pure water and resulting in higher production costs.

[0037] As mentioned above, the high-temperature return water from the water-air separator 120 is discharged through the water outlet component 300. Direct discharge of this water would inevitably lead to water waste. Therefore, in this application, the water outlet component 300 further includes an outlet pipe 320 and an air-cooled storage tank 330. One end of the outlet pipe 320 is connected to the bottom outlet of the water-air separator 120, and the other end is connected to the inlet of the air-cooled storage tank 330. The second control valve 310 is located on the outlet pipe 320. The outlet of the air-cooled storage tank 330 is connected to the inlet end of the inlet pipe 220. Pipe 320 discharges the hotter return water from the water-air separator 120 into the air-cooled temporary storage tank 330. Since the air compressor can still circulate for a certain period of time after the water change, there is no need to change the water during this period. Therefore, the discharged water is naturally cooled (natural air cooling) in the air-cooled temporary storage tank 330, and the water temperature decreases. When the air compressor needs to change the water next time, this water is filtered through two stages: the RO reverse osmosis filter 230 and the security filter 240 (the filtered water meets the requirements for air compressor use) and then introduced into the air compressor for continued use, so as to avoid water waste and make it more environmentally friendly.

[0038] If the high-temperature return water from the water-air separator 120 contains a large amount of impurities, and it is determined that this water still cannot meet the requirements of the air compressor even after two stages of filtration, it can be recycled for other uses. Specifically, the water outlet assembly 300 also includes a fourth control valve 350, a greening pipe 360, a greening pool 370, and a first filter 380. The fourth control valve 350 is located in the water outlet pipe 320. One end of the greening pipe 360 ​​is connected to the water outlet pipe 320 and is located between the fourth control valve 350 and the second control valve 310, and the other end is connected to the greening pool 370. The first filter 380 is located in the greening pipe 360. If it is determined that this portion of water, even after two stages of filtration, still cannot meet the requirements for the use of the air compressor, the fourth control valve 350 is closed, allowing the discharged water to enter the greening water tank 370 through the greening pipe 360. Upon entering the greening water tank 370, the water is filtered by the first filter 380 to meet the requirements for greening water. Then, the water in the greening water tank 370 can be used as greening water. This setup maximizes the utilization of water resources and builds an environmentally friendly factory area.

[0039] As mentioned above, the discharged water is naturally cooled (air-cooled) in the air-cooled storage tank 330 and can be reused when the air compressor needs to replace the water next time. If the water temperature in the air-cooled storage tank 330 is high when the air compressor needs to replace the water next time, high-temperature water will be introduced into the main unit 110. This obviously contradicts the water inlet temperature requirement of the water inlet component 200 of this application. Based on this, optionally, the outlet of the air-cooled storage tank 330 is connected to the water inlet end of the water inlet pipe 220 through a recovery pipe 390, and a fifth control valve 391 is provided on the recovery pipe 390. The air-cooled storage tank 330 has a third water temperature detection element 331, and the third water temperature detection element 331 and the fifth control valve 391 are electrically connected. The water temperature in the air-cooled storage tank 330 is detected by the third water temperature detection device 331. When the water temperature in the air-cooled storage tank 330 drops, the water temperature signal is transmitted to the fifth control valve 391 through the third water temperature detection device 331, and the fifth control valve 391 is opened to allow the air compressor to continue to use it when the water needs to be replaced next time. This avoids the high water temperature in the air-cooled storage tank 330 from flowing into the main unit 110 and affecting the equipment safety of the main unit 110.

[0040] If the water temperature in the air-cooled temporary storage tank 330 is high when the air compressor needs to be replaced next time, and the water in the air-cooled temporary storage tank 330 can only be used in the main unit 110 after the water temperature drops, then it needs to be mixed with other water. In this application, the water inlet assembly 200 also includes a tap water inlet pipe 250 and a sixth control valve 251 installed on the tap water inlet pipe 250. The outlet of the tap water inlet pipe 250 is connected to the inlet end of the inlet pipe 220. The third water temperature detection element 331 and the sixth control valve 251 are electrically connected. When the air compressor needs water replacement, the water temperature in the air-cooled temporary storage tank 330 is first detected by the third water temperature detection device 331. If the water temperature is low (meets the usage requirements), the fifth control valve 391 is opened (the sixth control valve 251 is closed) to allow the recovered water in the air-cooled temporary storage tank 330 to be introduced into the main unit 110 for continued use. If the water temperature is high, the sixth control valve 251 is opened (the fifth control valve 391 is closed) to allow tap water to be introduced, ensuring that the air compressor has sufficient water supply when water needs to be replaced.

[0041] In this application, the cooling water after one operation is cooled by the cooler 130 and then enters the main unit 110 through the main unit return water pipe 140 for continued use. The cooling water after one operation needs to be circulated in the air compressor for a certain period of time until it is replaced when the temperature is high. During the circulation process, there is also the possibility of scaling on the contact parts and even the growth of microorganisms in the water-air separator 120. Based on this, the main unit return water pipe 140 is optionally equipped with a second filter 141. The first water temperature detection element 400 is located between the second filter 141 and the main unit 110. The second filter 141 filters the water used in each circulation to ensure that the water in each circulation process is highly pure, thereby avoiding or even completely eliminating the possibility of scaling on the contact parts and even the growth of microorganisms in the water-air separator 120, and further ensuring the cleanliness and hygiene of the dairy product production process.

[0042] Preferably, the water outlet assembly 300 further includes a bypass pipe 340 and a third control valve 341. Both ends of the bypass pipe 340 are connected to the water outlet pipe 320, and both ends of the bypass pipe 340 are located at the two ends of the second control valve 310. The third control valve 341 is disposed on the bypass pipe 340. By providing the bypass pipe 340 and the third control valve 341, when the second control valve 310 malfunctions and cannot work normally, drainage can be manually performed through the bypass pipe 340 and the third control valve 341.

[0043] This application discloses an air compressor system, including a water supply device for an air compressor used in dairy production as described in any of the preceding claims.

[0044] Obviously, the above embodiments of this application are merely examples for clearly illustrating this application, and are not intended to limit the implementation of this application. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A water supply device for an air compressor used in dairy production, the air compressor comprising a main unit, a water-air separator, and a main unit return water pipeline, characterized in that: The device includes an inlet water assembly, an outlet water assembly, a first water temperature sensor, and a second water temperature sensor. The main unit's return water pipeline is equipped with a return water control valve. The first water temperature sensor is located in the main unit's return water pipeline, between the main unit and the return water control valve. The outlet of the inlet water assembly is connected to the main unit's return water pipeline and is located between the main unit and the first water temperature sensor. The inlet water assembly has a first control valve. The inlet of the outlet water assembly is connected to the bottom outlet of the water-air separator, and the bottom outlet of the water-air separator is equipped with a second water temperature sensor. The outlet water assembly has a second control valve. The return water control valve, the first control valve, and the second control valve are all electrically connected to the first water temperature sensor and also electrically connected to the second water temperature sensor.

2. The water supply device for an air compressor used in dairy production as described in claim 1, characterized in that: The water inlet assembly also includes an inlet pipe, an RO reverse osmosis filter, and a security filter. One end of the inlet pipe is the water inlet end, and the other end is connected to the main unit's return water pipeline. In the direction of water flow in the inlet pipe, the RO reverse osmosis filter, the security filter, and the first control valve are sequentially arranged on the inlet pipe.

3. The water supply device for an air compressor used in dairy production as described in claim 2, characterized in that: The water outlet assembly also includes a water outlet pipe and an air-cooled temporary storage tank. One end of the water outlet pipe is connected to the bottom outlet of the water-air separator, and the other end is connected to the inlet of the air-cooled temporary storage tank. The second control valve is located on the water outlet pipe, and the outlet of the air-cooled temporary storage tank is connected to the inlet end of the water inlet pipe.

4. The water supply device for an air compressor used in dairy production as described in claim 3, characterized in that: The water outlet assembly also includes a bypass pipe and a third control valve. Both ends of the bypass pipe are connected to the water outlet pipe, and both ends of the bypass pipe are located at the two ends of the second control valve. The third control valve is located in the bypass pipe.

5. The water supply device for an air compressor used in dairy production as described in claim 3, characterized in that: The water outlet assembly also includes a fourth control valve, a greening pipe, a greening pool, and a first filter. The fourth control valve is disposed on the water outlet pipe. One end of the greening pipe is connected to the water outlet pipe and is located between the fourth control valve and the second control valve. The other end is connected to the greening pool. The first filter is disposed on the greening pipe.

6. The water supply device for an air compressor used in dairy production as described in claim 3, characterized in that: The outlet of the air-cooled temporary storage tank is connected to the inlet end of the water inlet pipe through a recycling pipe, and a fifth control valve is installed on the recycling pipe. The air-cooled temporary storage tank has a third water temperature detection device, and the third water temperature detection device and the fifth control valve are electrically connected.

7. The water supply device for an air compressor used in dairy production as described in claim 6, characterized in that: The water inlet assembly also includes a tap water inlet pipe and a sixth control valve installed on the tap water inlet pipe. The outlet of the tap water inlet pipe is connected to the inlet end of the inlet pipe, and the third water temperature detection element is electrically connected to the sixth control valve.

8. The water supply device for an air compressor used in dairy production as described in claim 1, characterized in that: The main unit's return water pipeline is also equipped with a second filter, and the first water temperature detection element is located between the second filter and the main unit.

9. An air compressor system, characterized in that: Includes a water supply device for an air compressor used in dairy production as described in any one of claims 1 to 8.

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