Precision processing plant environment control system

Abstract

The utility model relates to a precision processing plant environment control system which comprises a control cabinet, a first ventilation pipeline, a second ventilation pipeline, a third ventilation pipeline, a fresh air fan, a first filter plate, a second filter plate, a cold water pipe, a hot water pipe, a first pressure difference sensor, a second pressure difference sensor, a first temperature and humidity sensor and a second temperature and humidity sensor. The first filter plate is fixedly connected to the right end of the avoiding hole, the second filter plate is arranged at the right end of the first filter plate, a control circuit is arranged in the control cabinet, and the first differential pressure sensor, the second differential pressure sensor, the first temperature and humidity sensor and the second temperature and humidity sensor are electrically connected with the control circuit. Data collected by the first differential pressure sensor, the second differential pressure sensor, the first temperature and humidity sensor and the second temperature and humidity sensor are transmitted to the control circuit, the power and start and stop of the fresh air ventilator are controlled through the control circuit, and impurities in air are filtered through the first filter plate and the second filter plate. And dust discharged from the first ventilation pipeline is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment monitoring technology, and in particular to an environmental control system for a precision machining plant. Background Technology

[0002] Precision manufacturing, such as semiconductor lithography, high-precision optical component grinding, and micron-level mechanical parts machining, places extremely stringent requirements on the cleanliness, temperature and humidity stability, and airflow organization of the production environment. Even minute dust particles in the environment can significantly reduce product yield, while fluctuations in temperature or humidity can cause thermal expansion and contraction of materials, directly affecting dimensional accuracy and geometric tolerances, and even resulting in batches of scrap. Traditional environmental control solutions in precision machining plants typically employ single temperature and humidity control devices or simple ventilation and filtration systems. These traditional systems lack a linkage mechanism between the temperature and humidity control devices and the ventilation system, making it difficult to accurately adjust environmental parameters based on real-time monitoring data, leading to insufficient stability of the processing environment. Furthermore, air filtration systems are inefficient, often employing single-layer filtration structures that cannot effectively remove tiny airborne particles. Long-term use can easily lead to dust accumulation inside the processing equipment, affecting equipment lifespan and processing accuracy. Utility Model Content

[0003] The purpose of this invention is to provide an environmental control system for a precision machining plant to solve the problems existing in the prior art.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] An environmental control system for a precision machining plant includes a control cabinet, a first ventilation duct, a second ventilation duct, a third ventilation duct, a fresh air unit, a first filter plate, a second filter plate, a cold water pipe, a hot water pipe, a first differential pressure sensor, a second differential pressure sensor, a first temperature and humidity sensor, and a second temperature and humidity sensor. The first ventilation duct has a clearance hole in its middle section. One end of the second ventilation duct is connected to the first ventilation duct through the clearance hole. The first filter plate is fixedly connected to the right end of the clearance hole. The second filter plate is fixedly connected to the right end of the first ventilation duct. The other end of the second ventilation duct is connected to one end of the third ventilation duct. The other end of the third ventilation duct is connected to the factory environment. The control cabinet contains a control circuit. The first differential pressure sensor, the second differential pressure sensor, the first temperature and humidity sensor, and the second temperature and humidity sensor are electrically connected to the control circuit. The fresh air unit is fixedly connected to the left end of the first ventilation duct. The hot water pipe is fixedly connected to the right end of the first ventilation duct. The cold water pipe is located on one side of the hot water pipe.

[0006] By adopting the above technical solution, the data collected by the first differential pressure sensor, the second differential pressure sensor, the first temperature and humidity sensor, and the second temperature and humidity sensor are transmitted to the control circuit. The control circuit controls the start and stop of the fresh air unit, and through the linkage of the control chip, the environment of the close processing plant is kept consistent. The first filter plate and the second filter plate filter impurities in the air, reducing the dust exiting from the first ventilation duct and preventing it from affecting the manufacturing process of the processing plant.

[0007] In a further embodiment, the control circuit includes:

[0008] power supply;

[0009] An air switch, one end of which is connected to one end of a power supply;

[0010] A start switch, one end of which is connected to the other end of an air switch;

[0011] A starting module, one end of which is connected to the other end of a start switch, and the other end of which is connected to the other end of a power supply;

[0012] An output module, one end of which is connected between the start switch and the start module, and the other end of which is connected between the other end of the power supply and the other end of the start module, and the output module and the start module are connected in parallel in the circuit;

[0013] The first alarm module has one end connected between the start switch and the start module, and the other end connected between the other end of the power supply and the other end of the start module. The first alarm module and the start module are connected in parallel in the circuit.

[0014] The second alarm module has one end connected between the start switch and the start module, and the other end connected between the other end of the power supply and the other end of the start module. The second alarm module and the start module are connected in parallel in the circuit.

[0015] The first control module has one end connected between the start switch and the start module, and the other end connected between the other end of the power supply and the other end of the start module. The first control module and the start module are connected in parallel in the circuit.

[0016] The second control module has one end connected between the start switch and the start module, and the other end connected between the other end of the power supply and the other end of the start module. The second control module and the start module are connected in parallel in the circuit.

[0017] The circuit includes an adjustment circuit, one end of which is connected between the start switch and the start module, and the other end of which is connected between the other end of the power supply and the other end of the start module. The adjustment circuit and the start module are connected in parallel in the circuit.

[0018] In a further embodiment, the startup module includes:

[0019] A first switch, one end of which is connected to the other end of a start switch;

[0020] A frequency converter, one end of which is connected to the other end of a first switch;

[0021] And a first regulating valve, one end of which is connected to the other end of the frequency converter, and the other end of which is connected to the other end of the power supply.

[0022] In a further embodiment, the output module includes:

[0023] A second switch, one end of which is connected to the other end of the start switch, and one end of which is connected to one end of the first switch;

[0024] A hair dryer, one end of which is connected to the other end of a second switch, and the other end of which is connected to the other end of a power source.

[0025] In a further embodiment, the first alarm module includes:

[0026] A third switch, one end of which is connected to the other end of a start switch;

[0027] A first buzzer, one end of which is connected to the other end of a third switch;

[0028] And a first warning light, one end of which is connected to the other end of a first buzzer, and the other end of which is connected to the other end of a power supply.

[0029] In a further embodiment, the second alarm module includes:

[0030] A fourth switch, one end of which is connected to the other end of a start switch;

[0031] A second buzzer, one end of which is connected to the other end of a fourth switch;

[0032] A second warning light, one end of which is connected to the other end of a second buzzer, and the other end of which is connected to the other end of a power supply.

[0033] In a further embodiment, the first control module includes:

[0034] The fifth switch, one end of which is connected to the other end of the start switch;

[0035] The second regulating valve is connected to the other end of the fifth switch at one end of the second regulating valve, and the other end of the second regulating valve is connected to the other end of the power supply.

[0036] In a further embodiment, the second control module includes:

[0037] A sixth switch, one end of which is connected to the other end of a start switch;

[0038] And a third regulating valve, one end of which is connected to the other end of the sixth switch, and the other end of the third regulating valve is connected to the other end of the start switch.

[0039] In a further embodiment, the frequency converter has 13 ports, including a first voltage input terminal, a second voltage input terminal, a third voltage input terminal, a first voltage output terminal, a second voltage output terminal, a third voltage output terminal, a start terminal, a reverse terminal, a first speed control terminal, a second speed control terminal, a third speed control terminal, a third common terminal, and a ground terminal. The first voltage input terminal, the second voltage input terminal, and the third voltage input terminal are respectively connected to the three phases of the power supply. The first voltage output terminal, the second voltage output terminal, and the third voltage output terminal are connected to the input terminal of a first regulating valve. The start terminal is connected to... One end of the forward rotation switch is connected to the third common terminal; the reverse rotation switch is connected to one end of the reverse rotation switch, and the other end of the reverse rotation switch is connected to the third common terminal; the first speed control terminal is connected to one end of the first speed control switch, and the other end of the first speed control switch is connected to the third common terminal; the second speed control terminal is connected to one end of the second speed control switch, and the other end of the second speed control switch is connected to the third common terminal; the third speed control terminal is connected to one end of the third speed control switch, and the other end of the third speed control switch is connected to the third common terminal; the grounding terminal is connected to the earth.

[0040] In a further embodiment, the adjustment circuit includes:

[0041] Adjust the power supply, wherein the AC input terminal of the adjustable power supply is connected to the other end of the start switch;

[0042] A communication module, wherein the input terminal of the communication module is connected to the DC output terminal of the regulating power supply, the communication terminal of the communication module is connected to a computer, and the output terminal of the communication module is connected to the DC input terminal of the regulating power supply;

[0043] The control chip has 18 ports, including a first common terminal, a first input terminal, a first output terminal, a second input terminal, a second output terminal, a third input terminal, a third output terminal, a fourth input terminal, a fourth output terminal, a power input terminal, a power output terminal, a signal input terminal, a first signal output terminal, a second signal output terminal, a third signal output terminal, a fourth signal output terminal, a fifth signal output terminal, and a second common terminal. The first common terminal is connected to the DC input terminal of the regulating power supply. The first input terminal is connected to one end of the first differential pressure sensor, and the first output terminal is connected to the other end of the second differential pressure sensor. One end is connected; the second input terminal is connected to one end of the second differential pressure sensor; the second output terminal is connected to the other end of the second differential pressure sensor; the third input terminal is connected to one end of the first temperature and humidity sensor; the third output terminal is connected to the other end of the first temperature and humidity sensor; the fourth input terminal is connected to one end of the first temperature and humidity sensor; the fourth output terminal is connected to the other end of the second temperature and humidity sensor; the power input terminal is connected to the live wire of the power supply; the power output terminal is connected to the neutral wire of the power supply; the signal input terminal is connected to the live wire of the power supply; and the second common terminal is connected to the DC input terminal of the regulating power supply.

[0044] The first intermediate relay has one end connected to the first signal output terminal and the other end connected to the neutral wire of the power supply.

[0045] The second intermediate relay has one end connected to the second signal output terminal and the other end connected to the neutral wire of the power supply.

[0046] The third intermediate relay, one end of which is connected to the third signal output terminal, and the other end of which is connected to the neutral wire of the power supply;

[0047] The fourth intermediate relay, one end of which is connected to the fourth signal output terminal, and the other end of which is connected to the neutral wire of the power supply;

[0048] And a fifth intermediate relay, one end of which is connected to the fifth signal output terminal, and the other end of which is connected to the neutral wire of the power supply.

[0049] By adopting the above technical solution, the air switch and start switch are activated, and the power supply provides power to the regulating circuit. When the data detected by the first temperature and humidity sensor and the second temperature and humidity sensor differ significantly, the control chip controls the first intermediate relay to be energized. The first intermediate relay controls the opening and closing of the first switch, causing the first switch to close, thus supplying power to the frequency converter. The forward switch closes, the fresh air unit starts, and the fresh air unit blows air into the first ventilation duct. The first and second switches are linked, so when the first switch closes, the second switch closes simultaneously, and the blower starts, further blowing out the air from the fresh air unit. This prevents the first ventilation duct from being too long to be completed by the fresh air unit alone. The system compares the data collected by the first and second temperature and humidity sensors to control the energization and de-energization of the fourth and fifth intermediate relays. When the temperature collected by the first temperature and humidity sensor is greater than that collected by the second sensor, it indicates that the temperature inside the processing plant is lower than the outdoor temperature. The control chip then energizes the fourth intermediate relay, causing the fifth switch to close, which in turn opens the second regulating valve. This allows cold water to enter the cold water pipe, and the airflow from the fresh air unit passes through the cold water pipe, thus lowering the airflow temperature and consequently reducing the temperature inside the processing plant. When the temperature collected by the first temperature and humidity sensor is less than that collected by the second sensor, it indicates... If the temperature inside the processing plant is higher than the outdoor temperature, the control chip energizes the fifth intermediate relay, causing the sixth switch to close. This opens the third regulating valve, allowing hot water to enter the hot water pipe. The airflow from the fresh air unit then passes through the hot water pipe, raising the temperature inside the processing plant. When the temperature difference between the first and second temperature and humidity sensors is small, indicating that the indoor and outdoor temperatures are similar, the inverter reduces the frequency of the fresh air unit to save energy. Because the air contains impurities, the airflow from the fresh air unit also contains impurities, making the first and second filter plates prone to clogging, thus blocking the first ventilation duct. When the first differential pressure sensor detects a differential pressure exceeding a certain value, the control chip collects the data from the first differential pressure sensor, energizing the second intermediate relay, closing the third switch, and energizing the first buzzer and the first warning light. This causes the first buzzer to sound and the first warning light to illuminate to alert the operator. Similarly, when the second differential pressure sensor detects a differential pressure exceeding a certain value, the control chip collects the data from the second differential pressure sensor, energizing the third intermediate relay, closing the fourth switch, and energizing the second buzzer and the second warning light. This causes the second buzzer to sound and the second warning light to illuminate to alert the operator, thus ensuring environmental control of the processing plant.

[0050] In summary, this utility model has the following beneficial effects:

[0051] 1. By activating the air switch and the start switch, the power supply provides power to the regulating circuit. When the data detected by the first temperature and humidity sensor and the second temperature and humidity sensor differ significantly, the control chip controls the first intermediate relay to be energized. The first intermediate relay controls the opening and closing of the first switch, causing the first switch to close, thus supplying power to the frequency converter. The forward switch closes, the fresh air unit starts, and the fresh air unit blows air into the first ventilation duct. The first and second switches are linked, so when the first switch closes, the second switch closes as well, activating the blower to further blow out the air from the fresh air unit, preventing the first ventilation duct from becoming too long and unable to function solely with the fresh air unit. Based on the first temperature and humidity sensor... The system compares the data collected by the first and second temperature and humidity sensors to control the energization and de-energization of the fourth and fifth intermediate relays. When the temperature collected by the first temperature and humidity sensor is greater than that collected by the second temperature and humidity sensor, it indicates that the temperature inside the processing plant is lower than the outdoor temperature. The control chip then energizes the fourth intermediate relay, causing the fifth switch to close, which in turn opens the second regulating valve. This allows cold water to enter the cold water pipe, and the airflow from the fresh air unit passes through the cold water pipe, thus lowering the airflow temperature and consequently reducing the temperature inside the processing plant. When the temperature collected by the first temperature and humidity sensor is less than that collected by the second temperature and humidity sensor, it indicates that the temperature inside the processing plant is lower than that outside. If the ambient temperature is higher than the outdoor ambient temperature, the control chip energizes the fifth intermediate relay, causing the sixth switch to close, which in turn opens the third regulating valve, allowing hot water to enter the hot water pipe. This allows the airflow from the fresh air unit to pass through the hot water pipe, thus raising the temperature inside the processing plant. When the temperature difference between the first and second temperature and humidity sensors is small, indicating that the temperature difference between the processing plant's interior and exterior is not significant, the inverter reduces the frequency of the fresh air unit to save energy. Because the air contains impurities, the airflow from the fresh air unit also contains impurities, making the first and second filter plates easily clogged, thus blocking the first ventilation duct. When the first pressure... When the differential pressure sensor detects a differential pressure exceeding a certain value, the control chip collects the data from the first differential pressure sensor, energizing the second intermediate relay, closing the third switch, and energizing the first buzzer and the first warning light. This causes the first buzzer to sound and the first warning light to illuminate to alert the operator. Similarly, when the second differential pressure sensor detects a differential pressure exceeding a certain value, the control chip collects the data from the second differential pressure sensor, energizing the third intermediate relay, closing the fourth switch, and energizing the second buzzer and the second warning light. This causes the second buzzer to sound and the second warning light to illuminate to alert the operator, thus ensuring effective environmental control of the processing plant. Attached Figure Description

[0052] Figure 1 This is an overall schematic diagram of the present invention;

[0053] Figure 2 This is the circuit block diagram of this utility model;

[0054] Figure 3 This is the circuit schematic diagram of this utility model.

[0055] In the diagram, QF is the air switch; SB1 is the start switch; SB2 is the first switch; SB3 is the second switch; SB4 is the third switch; SB5 is the fourth switch; SB6 is the fifth switch; SB7 is the sixth switch; M5 is the first regulating valve; M6 is the blower; M7 is the second regulating valve; M8 is the third regulating valve; S1 is the forward switch; S2 is the reverse switch; S3 is the first speed control switch; S4 is the second speed control switch; S5 is the third speed control switch; and R is the first voltage input terminal. S, Second voltage input terminal; T, Third voltage input terminal; M0, Start terminal; M1, Reverse terminal; M2, First speed control terminal; M3, Second speed control terminal; M4, Third speed control terminal; GND, Third common terminal; U, First voltage output terminal; V, Second voltage output terminal; W, Third voltage output terminal; PE, Ground terminal; L1, First warning light; L2, Second warning light; H1, First buzzer; H2, Second buzzer; 1M, First common terminal; 5, First input terminal; I 0. First output terminal; 6. Second input terminal; I1. Second output terminal; 7. Third input terminal; I2. Third output terminal; 8. Fourth input terminal; I3. Fourth output terminal; L. Power input terminal; N. Power output terminal; 1L. Signal input terminal; 0. First signal output terminal; 1. Second signal output terminal; 2. Third signal output terminal; 3. Fourth signal output terminal; 4. Fifth signal output terminal; M. Second common terminal; 9. Communication terminal; 10. First ventilation duct; 11. Second ventilation duct; 12. Third ventilation duct; 13. First differential pressure sensor; 14. Second differential pressure sensor; 15. First temperature and humidity sensor; 16. Second temperature and humidity sensor; 17. First filter plate; 18. Second filter plate; 19. Fresh air unit. Detailed Implementation

[0056] The present invention will be further described in detail below with reference to the accompanying drawings.

[0057] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0058] Example 1:

[0059] like Figures 1-3 As shown, a precision machining plant environmental control system includes a control cabinet, a first ventilation duct 10, a second ventilation duct 11, a third ventilation duct 12, a fresh air unit 19, a first filter plate 17, a second filter plate 18, a cold water pipe, a hot water pipe, a first differential pressure sensor 13, a second differential pressure sensor 14, a first temperature and humidity sensor 15, and a second temperature and humidity sensor 16. The first ventilation duct 10 has a clearance hole in its middle section. One end of the second ventilation duct 11 is connected to the first ventilation duct 10 through the clearance hole. The first filter plate 17 is fixedly connected to the right end of the clearance hole. The second filter plate... 18 is fixedly connected to the right end of the first ventilation duct 10. The other end of the second ventilation duct 11 is connected to one end of the third ventilation duct 12. The other end of the third ventilation duct 12 is connected to the factory environment. The control cabinet is equipped with a control circuit. The first differential pressure sensor 13, the second differential pressure sensor 14, the first temperature and humidity sensor 15, and the second temperature and humidity sensor 16 are electrically connected to the control circuit. The fresh air unit 19 is fixedly connected to the left end of the inside of the first ventilation duct 10. The hot water pipe is fixedly connected to the right end of the inside of the first ventilation duct 10. The cold water pipe is located on one side of the hot water pipe.

[0060] The first temperature and humidity sensor 15 is located at the left end of the first ventilation duct 10, the second temperature and humidity sensor 16 is located at the right end of the third ventilation duct 12, the blower M6 is located between the first filter plate 17 and the second filter plate 18, and the cold water pipe and the hot water pipe are located to the left of the blower M6.

[0061] The control circuit includes a power supply; an air switch QF, one end of which is connected to one end of the power supply; a start switch SB1, one end of which is connected to the other end of the air switch QF; a start module, one end of which is connected to the other end of the start switch SB1, and the other end of which is connected to the other end of the power supply; an output module, one end of which is connected between the start switch SB1 and the start module, and the other end of which is connected between the other end of the power supply and the other end of the start module, connected in parallel with the start module; a first alarm module, one end of which is connected between the start switch SB1 and the start module, and the other end of which is connected between the other end of the power supply and the other end of the start module, connected in parallel with the start module; and a second alarm module, one end of which is connected between the start switch SB1 and the start module. Between the starting modules, one end of the second alarm module is connected between the other end of the power supply and the other end of the starting module, and the second alarm module and the starting module are connected in parallel in the circuit. The first control module has one end connected between the start switch SB1 and the starting module, and the other end connected between the other end of the power supply and the other end of the starting module, and the first control module and the starting module are connected in parallel in the circuit. The second control module has one end connected between the start switch SB1 and the starting module, and the other end connected between the other end of the power supply and the other end of the starting module, and the second control module and the starting module are connected in parallel in the circuit. And the regulating circuit has one end connected between the start switch SB1 and the starting module, and the other end connected between the other end of the power supply and the other end of the starting module, and the regulating circuit and the starting module are connected in parallel in the circuit.

[0062] The starting module includes a first switch SB2, one end of which is connected to the other end of a start switch SB1; a frequency converter, one end of which is connected to the other end of the first switch SB2; and a first regulating valve M5, one end of which is connected to the other end of the frequency converter, and the other end of which is connected to the other end of a power supply.

[0063] The output module includes a second switch SB3, one end of which is connected to the other end of the start switch SB1, and one end of the second switch SB3 is connected to the first switch SB2, and a fan, one end of which is connected to the other end of the second switch SB3, and the other end of the fan is connected to the other end of the power supply.

[0064] The first alarm module includes a third switch SB4, one end of which is connected to the other end of a start switch SB1; a first buzzer H1, one end of which is connected to the other end of the third switch SB4; and a first warning light L1, one end of which is connected to the other end of the first buzzer H1, and the other end of the first warning light L1 is connected to the other end of a power supply.

[0065] The second alarm module includes a fourth switch SB5, one end of which is connected to the other end of the start switch SB1; a second buzzer H2, one end of which is connected to the other end of the fourth switch SB5; and a second warning light L2, one end of which is connected to the other end of the second buzzer H2, and the other end of the second warning light L2 is connected to the other end of the power supply.

[0066] The first control module includes a fifth switch SB6, one end of which is connected to the other end of a start switch SB1, and a second regulating valve M5, one end of which is connected to the other end of the fifth switch SB6, and the other end of the second regulating valve M7 is connected to the other end of a power supply.

[0067] The second control module includes a sixth switch SB7, one end of which is connected to the other end of the start switch SB1, and a third regulating valve M8, one end of which is connected to the other end of the sixth switch SB7, and the other end of the third regulating valve M8 is connected to the other end of the start switch SB1.

[0068] The frequency converter has 13 ports, including a first voltage input terminal R, a second voltage input terminal S, a third voltage input terminal T, a first voltage output terminal U, a second voltage output terminal V, a third voltage output terminal W, a start terminal M0, a reverse terminal M1, a first speed control terminal M2, a second speed control terminal M3, a third speed control terminal M4, a third common terminal GND, and a ground terminal PE. The first voltage input terminal R, the second voltage input terminal S, and the third voltage input terminal T are connected to the three phases of the power supply, respectively. The first voltage output terminal U, the second voltage output terminal V, and the third voltage output terminal W are connected to the input terminal of the first regulating valve M5. The start terminal M0 is connected to the forward switch S1. One end of the forward switch S1 is connected to the third common terminal GND. The reverse end M1 is connected to one end of the reverse switch S2, and the other end of the reverse switch S2 is connected to the third common terminal GND. The first speed control end M2 is connected to one end of the first speed control switch S3, and the other end of the first speed control switch S3 is connected to the third common terminal GND. The second speed control end M3 is connected to one end of the second speed control switch S4, and the other end of the second speed control switch S4 is connected to the third common terminal GND. The third speed control end M4 is connected to one end of the third speed control switch S5, and the other end of the third speed control switch S5 is connected to the third common terminal GND. The grounding end PE is connected to the earth.

[0069] The regulating circuit includes a regulating power supply, whose AC input terminal is connected to the other end of the start switch SB1; a communication module, whose input terminal is connected to the DC output terminal of the regulating power supply; a communication terminal 9 of the communication module connected to a computer; and an output terminal of the communication module connected to the DC input terminal of the regulating power supply. The control chip has 18 ports, including a first common terminal 1M, a first input terminal 5, a first output terminal I0, a second input terminal 6, a second output terminal I1, a third input terminal 7, a third output terminal I2, a fourth input terminal 8, a fourth output terminal I3, a power input terminal L, a power output terminal N, a signal input terminal 1L, a first signal output terminal O, a second signal output terminal 1, a third signal output terminal 2, a fourth signal output terminal 3, a fifth signal output terminal 4, and a second common terminal M. The first common terminal 1M is connected to the DC input terminal of the regulating power supply. The first input terminal 5 is connected to one end of the first differential pressure sensor 13, and the first output terminal I... 0 is connected to the other end of the second differential pressure sensor 14, the second input terminal 6 is connected to one end of the second differential pressure sensor 14, the second output terminal I1 is connected to the other end of the second differential pressure sensor 14, the third input terminal 7 is connected to one end of the first temperature and humidity sensor 15, the third output terminal I2 is connected to the other end of the first temperature and humidity sensor 15, the fourth input terminal 8 is connected to one end of the first temperature and humidity sensor 15, and the fourth output terminal I... 3 is connected to the other end of the second temperature and humidity sensor 16; the power input terminal L is connected to the live wire of the power supply; the power output terminal is connected to the neutral wire of the power supply; the signal input terminal 1L is connected to the live wire of the power supply; the second common terminal M is connected to the DC input terminal of the regulating power supply; the first intermediate relay, one end of the first intermediate relay is connected to the first signal output terminal 0; the other end of the first intermediate relay is connected to the neutral wire of the power supply; the second intermediate relay, one end of the second intermediate relay is connected to the second signal output terminal 1; the other end of the second intermediate relay is connected to the neutral wire of the power supply; the third intermediate relay, one end of the third intermediate relay is connected to the third signal output terminal 2; the other end of the third intermediate relay is connected to the neutral wire of the power supply; the fourth intermediate relay, one end of the fourth intermediate relay is connected to the fourth signal output terminal 3; the other end of the fourth intermediate relay is connected to the neutral wire of the power supply; and the fifth intermediate relay, one end of the fifth intermediate relay is connected to the fifth signal output terminal 4; the other end of the fifth intermediate relay is connected to the neutral wire of the power supply.

[0070] The first intermediate relay controls the opening and closing of the first switch SB2; the second intermediate relay controls the opening and closing of the third switch SB4; the third intermediate relay controls the opening and closing of the fourth switch SB5; the fourth intermediate relay controls the opening and closing of the fifth switch SB6; and the fifth intermediate relay controls the opening and closing of the sixth switch SB7. The first switch SB2 and the second switch SB3 are linked; when the first switch SB2 is closed, the second switch SB3 is closed; when the first switch SB2 is open, the second switch SB3 is open.

[0071] Specific implementation process: The air switch QF and start switch SB1 are activated, supplying power to the regulating circuit. When the data detected by the first temperature and humidity sensor 15 and the second temperature and humidity sensor 16 differ significantly, the control chip controls the first intermediate relay to be energized. The first intermediate relay controls the opening and closing of the first switch SB2, causing the first switch SB2 to close, thus supplying power to the inverter. The forward switch S1 closes, starting the fresh air unit 19. The fresh air unit 19 blows air into the first ventilation duct 10. The first switch SB2 and the second switch SB3 are linked, so when the first switch SB2 closes, the second switch SB3 closes accordingly, activating the blower M6 to further expel the air blown by the fresh air unit 19, preventing air from entering the first ventilation duct. The length of the 10 circuit is too long to be completed by the fresh air unit 19 alone. The system compares the data collected by the first temperature and humidity sensor 15 and the second temperature and humidity sensor 16 to control the energization and de-energization of the fourth and fifth intermediate relays. When the temperature collected by the first temperature and humidity sensor 15 is greater than the temperature collected by the second temperature and humidity sensor 16, it indicates that the temperature inside the processing plant is lower than the outdoor temperature. The control chip then energizes the fourth intermediate relay, causing the fifth switch SB6 to close, which in turn opens the second regulating valve M7. This allows cold water to enter the cold water pipe, causing the airflow from the fresh air unit 19 to pass through the cold water pipe, thus reducing the airflow temperature and lowering the temperature inside the processing plant. When the temperature collected by the first temperature and humidity sensor 15 is lower than the outdoor temperature, the system controls the energization and de-energization of the fourth intermediate relay. When the temperature collected by the second temperature and humidity sensor 16 is higher than the outdoor temperature, the control chip energizes the fifth intermediate relay, causing the sixth switch SB7 to close. This opens the third regulating valve M8, allowing hot water to enter the hot water pipe. The airflow from the fresh air unit 19 then passes through the hot water pipe, raising the temperature inside the processing plant. When the temperature difference between the first temperature and humidity sensor 15 and the second temperature and humidity sensor 16 is small, indicating that the indoor and outdoor temperatures are similar, the inverter reduces the frequency of the fresh air unit 19 to save energy. Because the air contains impurities, the airflow from the fresh air unit 19 also contains impurities, affecting the first filter plate 17 and the second filter plate... 18 is easily blocked, thus blocking the first ventilation duct 10. When the first differential pressure sensor 13 detects a pressure difference exceeding a certain value, the control chip collects the data collected by the first differential pressure sensor 13, energizing the second intermediate relay, closing the third switch SB4, and energizing the first buzzer H1 and the first warning light L1, causing the first buzzer H1 to sound and the first warning light L1 to illuminate to warn the operator. When the second differential pressure sensor 14 detects a pressure difference exceeding a certain value, the control chip collects the data collected by the second differential pressure sensor 14, energizing the third intermediate relay, closing the fourth switch SB5, and energizing the second buzzer H2 and the second warning light L2, causing the second buzzer H2 to sound.The second warning light, L2, illuminates to alert operators, thus ensuring environmental control within the processing plant.

[0072] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0073] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A precision machining factory environment control system, characterized by, The system includes a control cabinet, a first ventilation duct, a second ventilation duct, a third ventilation duct, a fresh air unit, a first filter plate, a second filter plate, a cold water pipe, a hot water pipe, a first differential pressure sensor, a second differential pressure sensor, a first temperature and humidity sensor, and a second temperature and humidity sensor. The first ventilation duct has a clearance hole in its middle section. One end of the second ventilation duct connects to the first ventilation duct through the clearance hole. The first filter plate is fixedly connected to the right end of the clearance hole. The second filter plate is fixedly connected to the right end of the first ventilation duct. The other end of the second ventilation duct connects to one end of the third ventilation duct. The other end of the third ventilation duct connects to the factory environment. The control cabinet contains a control circuit. The first differential pressure sensor, the second differential pressure sensor, the first temperature and humidity sensor, and the second temperature and humidity sensor are electrically connected to the control circuit. The fresh air unit is fixedly connected to the left end inside the first ventilation duct. The hot water pipe is fixedly connected to the right end inside the first ventilation duct. The cold water pipe is located on one side of the hot water pipe.

2. A precision machining factory environment control system according to claim 1, wherein: The control circuit includes: power supply; An air switch, one end of which is connected to one end of a power supply; A start switch, one end of which is connected to the other end of an air switch; A starting module, one end of which is connected to the other end of a start switch, and the other end of which is connected to the other end of a power supply; An output module, one end of which is connected between the start switch and the start module, and the other end of which is connected between the other end of the power supply and the other end of the start module, and the output module and the start module are connected in parallel in the circuit; The first alarm module has one end connected between the start switch and the start module, and the other end connected between the other end of the power supply and the other end of the start module. The first alarm module and the start module are connected in parallel in the circuit. The second alarm module has one end connected between the start switch and the start module, and the other end connected between the other end of the power supply and the other end of the start module. The second alarm module and the start module are connected in parallel in the circuit. The first control module has one end connected between the start switch and the start module, and the other end connected between the other end of the power supply and the other end of the start module. The first control module and the start module are connected in parallel in the circuit. The second control module has one end connected between the start switch and the start module, and the other end connected between the other end of the power supply and the other end of the start module. The second control module and the start module are connected in parallel in the circuit. The circuit includes an adjustment circuit, one end of which is connected between the start switch and the start module, and the other end of which is connected between the other end of the power supply and the other end of the start module. The adjustment circuit and the start module are connected in parallel in the circuit.

3. A precision machining factory environment control system according to claim 2, wherein: The startup module includes: A first switch, one end of which is connected to the other end of a start switch; A frequency converter, one end of which is connected to the other end of a first switch; And a first regulating valve, one end of which is connected to the other end of the frequency converter, and the other end of which is connected to the other end of the power supply.

4. The environmental control system for a precision machining plant according to claim 2, characterized in that: The output module includes: A second switch, one end of which is connected to the other end of the start switch, and one end of which is connected to one end of the first switch; A hair dryer, one end of which is connected to the other end of a second switch, and the other end of which is connected to the other end of a power source.

5. A precision machining factory environment control system according to claim 2, wherein: The first alarm module includes: A third switch, one end of which is connected to the other end of a start switch; A first buzzer, one end of which is connected to the other end of a third switch; And a first warning light, one end of which is connected to the other end of a first buzzer, and the other end of which is connected to the other end of a power supply.

6. A precision machining factory environment control system according to claim 2, wherein: The second alarm module includes: A fourth switch, one end of which is connected to the other end of a start switch; A second buzzer, one end of which is connected to the other end of a fourth switch; A second warning light, one end of which is connected to the other end of a second buzzer, and the other end of which is connected to the other end of a power supply.

7. A precision machining factory environment control system according to claim 2, wherein: The first control module includes: The fifth switch, one end of which is connected to the other end of the start switch; The second regulating valve, one end of which is connected to the other end of the fifth switch, and the other end of which is connected to the other end of the power supply.

8. A precision machining factory environment control system according to claim 2, wherein: The second control module includes: A sixth switch, one end of which is connected to the other end of a start switch; And a third regulating valve, one end of which is connected to the other end of the sixth switch, and the other end of the third regulating valve is connected to the other end of the start switch.

9. A precision machining factory environment control system according to claim 3, wherein: The frequency converter has 13 ports, including a first voltage input terminal, a second voltage input terminal, a third voltage input terminal, a first voltage output terminal, a second voltage output terminal, a third voltage output terminal, a start terminal, a reverse terminal, a first speed control terminal, a second speed control terminal, a third speed control terminal, a third common terminal, and a ground terminal. The first, second, and third voltage input terminals are respectively connected to the three phases of the power supply. The first, second, and third voltage output terminals are connected to the input terminal of a first regulating valve. The start terminal is connected to a forward rotation switch. One end of the forward switch is connected to the third common terminal; the reverse end is connected to one end of the reverse switch, and the other end of the reverse switch is connected to the third common terminal; the first speed control end is connected to one end of the first speed control switch, and the other end of the first speed control switch is connected to the third common terminal; the second speed control end is connected to one end of the second speed control switch, and the other end of the second speed control switch is connected to the third common terminal; the third speed control end is connected to one end of the third speed control switch, and the other end of the third speed control switch is connected to the third common terminal; and the grounding end is connected to the earth.

10. A precision machining factory environment control system according to claim 2, wherein: The regulating circuit includes: Adjust the power supply, wherein the AC input terminal of the adjustable power supply is connected to the other end of the start switch; A communication module, wherein the input terminal of the communication module is connected to the DC output terminal of the regulating power supply, the communication terminal of the communication module is connected to a computer, and the output terminal of the communication module is connected to the DC input terminal of the regulating power supply; The control chip has 18 ports, including a first common terminal, a first input terminal, a first output terminal, a second input terminal, a second output terminal, a third input terminal, a third output terminal, a fourth input terminal, a fourth output terminal, a power input terminal, a power output terminal, a signal input terminal, a first signal output terminal, a second signal output terminal, a third signal output terminal, a fourth signal output terminal, a fifth signal output terminal, and a second common terminal. The first common terminal is connected to the DC input terminal of the regulating power supply. The first input terminal is connected to one end of the first differential pressure sensor, and the first output terminal is connected to the other end of the second differential pressure sensor. One end is connected; the second input terminal is connected to one end of the second differential pressure sensor; the second output terminal is connected to the other end of the second differential pressure sensor; the third input terminal is connected to one end of the first temperature and humidity sensor; the third output terminal is connected to the other end of the first temperature and humidity sensor; the fourth input terminal is connected to one end of the first temperature and humidity sensor; the fourth output terminal is connected to the other end of the second temperature and humidity sensor; the power input terminal is connected to the live wire of the power supply; the power output terminal is connected to the neutral wire of the power supply; the signal input terminal is connected to the live wire of the power supply; and the second common terminal is connected to the DC input terminal of the regulating power supply. The first intermediate relay has one end connected to the first signal output terminal and the other end connected to the neutral wire of the power supply. The second intermediate relay has one end connected to the second signal output terminal and the other end connected to the neutral wire of the power supply. The third intermediate relay, one end of which is connected to the third signal output terminal, and the other end of which is connected to the neutral wire of the power supply; The fourth intermediate relay, one end of which is connected to the fourth signal output terminal, and the other end of which is connected to the neutral wire of the power supply; And a fifth intermediate relay, one end of which is connected to the fifth signal output terminal, and the other end of which is connected to the neutral wire of the power supply.

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