A medical laboratory air purification system

Abstract

The invention relates to the technical field of air purification equipment, and discloses an air purification system for a medical laboratory, comprising a purifier, wherein a filter element is arranged in the purifier, an inner cavity of the purifier is divided into two spaces, a purification chamber and a filter chamber, by the filter element, a photometer is fixedly connected to the inner wall at the bottom of the purifier, a detection device is fixedly connected to the inner wall at the top of the purifier, a photoresistor is arranged at the bottom of the detection device, a current amplifier is arranged on the top of two photoresistors, a closed cavity is opened in the inner cavity of the detection device, a cleaning switch is fixedly connected to one end of the closed cavity close to the filter chamber, and a filtering detection device is fixedly connected to the other end of the closed cavity close to the clean air chamber, the air purification system for the medical laboratory can automatically detect the penetration rate of the filter element during use of the purifier, and provides a method for manually and regularly detecting the penetration rate of the filter element without stopping the machine, thereby solving the problem that the existing air purification equipment cannot conveniently detect the penetration rate of the air purifier filter element.

Description

Technical Field

[0001] The invention relates to the technical field of air purification equipment, in particular to an air purification system for a medical laboratory. Background Art

[0002] The laboratory air purification system purifies harmful gases, corrosive gases, dust and other gases generated in the laboratory that may cause great damage to the environment. In the process of treating harmful gases and corrosive gases, the harmful gases and corrosive gases in the laboratory are first sucked in by a suction fan, and then the harmful gases and corrosive gases sucked in by the suction fan are purified by the air purifier to make the harmful gases and corrosive gases meet the emission standards. When purifying the laboratory air, it needs to circulate and exchange with the outside air. The air purifier then purifies the polluted air from the outside and sends it into the laboratory to complete the internal and external circulation of the air.

[0003] Air purifiers are an important part of the laboratory gas purification cycle, and the filter element plays a key role in filtering. However, the existing filter element structure is complex and diverse, and some of the components of the filter element are paper materials, which may shrink due to the influence of cold, heat, dryness and wetness, resulting in the filter element being unable to completely filter particles, affecting the purification effect of the air purifier.

[0004] However, the existing purification equipment cannot detect the filter element penetration rate in time, that is, detect whether the filtering effect of the filter element meets the required cleaning standard. The light beam emitted by the photometer passes through the air molecules and light scattering and light absorption will occur. The more dust and particle molecules in the air, the stronger the light scattering and light absorption effect, and the light intensity will be weakened accordingly. Since the photoresistor will weaken with the increase of light intensity, and the particle size resolution of the photometer is between 0.1 microns and 100 microns, the particle diameter that can be distinguished by the light beam emitted by the photometer is within the filtering detection range of the air purifier filter element, so a photoresistor can be set before and after the filter element is filtered. The photoresistor can be used to detect the change in light intensity of the light beam irradiated by the photometer in the air before and after filtration, which reflects the content of particulate molecules in the air before and after the filter element is filtered, that is, reflects the filtering effect of the filter element on the particulate molecules in the air. Therefore, the penetration rate of the filter element, that is, whether the filtering effect of the filter element meets the cleaning standard, can be detected by the photoresistor and the corresponding structural reaction. Summary of the invention

[0005] In view of the shortcomings of the existing purification equipment mentioned in the background technology during use, the present invention provides a medical laboratory air purification system, which can automatically detect the penetration rate of the filter element during the use of the purifier and provide a method for manually periodically detecting the penetration rate of the filter element without stopping the machine, thereby solving the technical problems raised in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: a medical laboratory air purification system, comprising a purifier, wherein a filter element is arranged in the purifier, wherein the inner cavity of the purifier is divided into two spaces, a purification chamber and a filter chamber, by the filter element, wherein the filter element is fixedly sleeved with a filter box, wherein the filter box is fixedly connected to the inner cavity of the purifier, an air inlet is provided at the bottom of one side of the filter chamber, an air outlet is provided at the top of one side of the purification chamber, a fan is provided in the purification chamber, wherein the fan is fixedly connected to one side of the inner cavity of the purifier, a photometer II and a photometer I are fixedly connected to the inner wall of the bottom of the purifier, a detection device is fixedly connected to the inner wall of the top of the purifier, and photosensitive electrodes are respectively provided at the bottoms of both sides of the detection device. Resistance, current amplifiers are provided on the tops of the two photoresistors, the photoresistors and the current amplifiers are fixedly connected to the housing of the detection device, the inner cavity of the detection device is provided with a closed cavity, one end of the closed cavity close to the filter chamber is fixedly connected with a cleaning switch, the other end of the closed cavity close to the clean air chamber is fixedly connected with a filtration detection device, a magnet III is provided between the filtration detection device and the cleaning switch, both sides of the magnet III are fixedly connected with detection springs, the detection springs are respectively fixedly connected to the filtration detection device and the cleaning switch, the top of the magnet III is fixedly connected with a detection rod, the detection rod and the top of the inner cavity of the housing are respectively fixedly connected with conductive contacts IV.

[0007] Preferably, the cleaning switch is composed of a cleaning shell, a magnet II, an electromagnet II, a stretching spring and a conductive contact II. One side of the inner cavity of the cleaning shell is fixedly connected to a magnet II, the outside of the magnet II is fixedly connected to a stretching spring, the stretching spring is fixedly connected to one side of the electromagnet II, the other side of the inner cavity of the cleaning switch is fixedly connected to an electromagnet II, and the side of the magnet II away from the electromagnet II and the inner wall of the closed cavity are respectively fixedly connected to conductive contact II. The filtering detection device is composed of a detection shell, a conductive contact III and an electromagnet III. The inner cavity of the detection shell is fixedly connected to an electromagnet III, and the opposite sides of the electromagnet III and the inner wall of the filtering shell away from the filter chamber are respectively fixedly connected to conductive contact III.

[0008] Preferably, a temperature control switch is provided on one side of the filter chamber, and the temperature control switch is fixedly connected to the top of the inner cavity of the purifier. The temperature control switch consists of a temperature control shell, a tension spring, a magnet I, a conductive contact piece I, an electromagnet I, a fixed plate, and a thermistor. The top of the inner cavity of the temperature control shell is fixedly connected with a tension spring, the bottom of the tension spring is fixedly connected with the magnet I, the bottom of the magnet I is provided with an electromagnet I, a fixed plate and a thermistor, the inner cavity of the temperature control shell is fixedly connected with a fixed plate, the top and bottom of the fixed plate are respectively fixedly connected with the electromagnet I and the thermistor, and the top of the magnet I and the top of the inner cavity of the temperature control shell are respectively provided with a conductive contact piece I.

[0009] Preferably, a suspension is placed at the bottom of the closed cavity, the buoyancy of the magnet III on the suspension is equal to the gravity of the magnet III and its connector, and the two sides of the conductive contact piece IV fixedly connected to the top of the inner cavity of the shell are arc-shaped.

[0010] Preferably, the circuits of the electromagnets I and II are opened synchronously with the circuit of the purifier, the circuit of the electromagnet III is in a normally closed state, and the magnetic poles of the electromagnets III and II facing the magnet III are different.

[0011] Preferably, the photoresistors provided on the top of the photometer II and the photometer I are arranged symmetrically, and the light beams emitted by the photometer II and the photometer I are not blocked by objects.

[0012] The present invention has the following beneficial effects:

[0013] 1. The present invention determines through the cleaning switch and the temperature control switch that when the temperature in the filter chamber rises and the gas cleanliness is not high, when both conditions meet the opening standard at the same time, the cleaning switch and the temperature control switch control the detection device circuit to connect the filter element to detect the penetration rate, and detect whether the filtering effect of the filter element meets the cleaning standard. Since the dust and particulate molecules in the gas before and after the filter element is filtered are different, the gas in the purification chamber is more clean after being filtered by the filter element, and there are fewer particulate molecules and dust. The resistance value of the photoresistor on one side of the purification chamber is lower than that of the photoresistor in the filter chamber. Under constant voltage conditions, the current value of the electromagnet connected in series with the photoresistor also increases with the decrease of the resistance value, and after the current value is linearly amplified by the current amplifier, the magnetic force of the electromagnet increases with the increase of the current value. When the air cleanliness in the purification room is high, the magnetic attraction of the electromagnet III in the filter detection device on one side of the purification room is greater than the magnetic attraction of the electromagnet II in the cleaning switch, so that the magnet III moves to one side of the filter detection device, the two conductive contacts IV are not connected, and the indicator light does not display, which means that the filter element meets the cleaning standards; when the gas cleanliness in the purification room does not meet the cleaning standards, the current value of the filter detection device is slightly greater than or even equal to the current value of the cleaning switch, the detection rod on the top of the magnet III and the conductive contact IV are displaced toward the center of the closed cavity, the two conductive contacts IV are connected and triggered, so that the circuit of the indicator light is connected, and the indicator light is displayed on the display screen to remind people that the filter element needs to be replaced, and the filtering effect of the filter element is reduced and does not meet the cleaning standards.

[0014] 2. The present invention conveniently detects the filter element manually without stopping the machine, does not affect the air purification of the air in the laboratory by the air purifier, and ensures the cleanliness of the air in the laboratory. During manual detection, the worker controls the single-pole switch to turn on the circuit of the detection device to connect. If the indicator light on the display screen is not working, it means that the filtering effect of the filter element is good and it can continue to be used without replacing the filter element; if the indicator light on the display screen is on, the single-pole double-throw switch is controlled, and the clean switch is used to judge the cleanliness of the air in the filter chamber. If the clean switch is not turned on, it means that the cleanliness of the air in the purification chamber and the filter chamber is high enough, and the required purification degree of the air is low. If the air cleanliness is high and there is little difference before and after passing through the filter element, it means that the filter element does not need to be replaced. On the contrary, if the clean switch is turned on, it means that the cleanliness of the air in the purification chamber and the filter chamber is not high, and the degree of purification of the air by the filter element is not enough, which means that the filter element is invalid and needs to be replaced in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view structural schematic diagram of the present invention;

[0016] Figure 2 For the present invention Figure 1 A schematic diagram of the structure enlargement in the middle;

[0017] Figure 3 This is an enlarged schematic diagram of the temperature control switch structure of the present invention;

[0018] Figure 4 It is an enlarged schematic diagram of the structure of the filtering detection device of the present invention;

[0019] Figure 5 This is an enlarged schematic diagram of the cleaning switch structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the appearance of the present invention;

[0021] Figure 7 It is a connection diagram of the detection circuit of the present invention.

[0022] In the figure: 1. purifier; 2. filter element; 3. filter box; 4. air outlet; 5. fan; 6. air inlet; 7. detection device; 8. photometer II; 9. photometer I; 10. housing; 11. current amplifier; 12. temperature control switch; 13. photoresistor; 14. filter detection device; 15. cleaning switch; 16. detection spring; 17. magnet III; 18. detection rod; 19. conductive contact IV; 20. suspension; 21. temperature control outer Shell; 22. Tension spring; 23. Magnet I; 24. Conductive contact piece I; 25. Sealed cavity; 26. Electromagnet I; 27. Fixing plate; 28. Thermistor; 29. ​​Detection shell; 30. Conductive contact piece III; 31. Electromagnet III; 32. Electromagnet II; 33. Conductive contact piece II; 34. Magnet II; 35. Indicator light; 36. Tension spring; 37. Clean shell; 38. Display screen; 39. Single-pole switch; 40. Single-pole double-throw switch. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1 A medical laboratory air purification system includes a purifier 1, a filter element 2 is arranged in the purifier 1, and the inner cavity of the purifier 1 is divided into two spaces, a purification chamber and a filter chamber, by the filter element 2. The filter element 2 is fixedly connected to the filter box 3, and the filter box 3 fixes the filter element 2. The filter box 3 is fixedly connected to the inner cavity of the purifier 1, an air inlet 6 is opened at the bottom of one side of the filter chamber, an air outlet 4 is opened at the top of one side of the purification chamber, and a fan 5 is arranged in the purification chamber. The fan 5 is fixedly connected to one side of the inner cavity of the purifier 1, and the fan 5 sucks the outside air and purifies it through the filter element 2 and then sends it to the laboratory through the air outlet 4. The bottom inner wall of the purifier 1 is fixedly connected with a photometer II 8 and a photometer I 9, and the photometer II 8 and the photometer I 9 emit a light beam through the air, so that the photoresistor 13 can detect the light intensity in the purifier 1. The photoresistors 13 provided on the top of the photometers II8 and I9 are arranged symmetrically, and the light beams emitted by the photometers II8 and I9 are not blocked by objects, ensuring that the light beams emitted by the photometers II8 and I9 are not affected by devices other than particles and dust in the air, thereby ensuring the accuracy of the detection device 7.

[0025] refer to Figure 1 , Figure 3A temperature control switch 12 is provided on one side of the filter chamber. The temperature control switch 12 is fixedly connected to the top of the inner cavity of the purifier 1. The temperature control switch 12 consists of a temperature control shell 21, a tension spring 22, a magnet Ⅰ23, a conductive contact piece Ⅰ24, an electromagnet Ⅰ26, a fixed plate 27 and a thermistor 28. The top of the inner cavity of the temperature control shell 21 is fixedly connected with a tension spring 22, the tension spring 22 is fixedly connected with a magnet Ⅰ23, the magnet Ⅰ23 is fixedly connected to the bottom of the tension spring 22, the outer side of the magnet Ⅰ23 is fixedly connected with a connecting plate made of non-magnetic resistance material, the bottom of the magnet Ⅰ23 is provided with an electromagnet Ⅰ26, a fixed plate 27 and a thermistor 28, the inner cavity of the temperature control shell 21 is fixedly connected with a fixed plate 27, the top and bottom of the fixed plate 27 are respectively fixedly connected with an electromagnet Ⅰ26 and a thermistor 28, and the resistance value of the thermistor 28 decreases continuously with the increase of temperature. Conductive contacts Ⅰ24 are respectively provided at the top of the magnet Ⅰ23 and the top of the inner cavity of the temperature control housing 21. The two conductive contacts Ⅰ24 are connected to connect the circuit part of the detection device 7. When the temperature of the temperature control switch 12 rises, the resistance value of the thermistor 28 at the bottom decreases with the increase of temperature, the current value of the series circuit of the electromagnet Ⅰ26 and the thermistor 28 continues to increase, the magnetic force of the electromagnet Ⅰ26 continues to increase, and the magnetic repulsion of the electromagnet Ⅰ26 on the magnet Ⅰ23 continues to increase until the top of the magnet Ⅰ23 and the conductive contact Ⅰ24 at the top of the inner cavity of the temperature control housing 21 are connected.

[0026] refer to Figure 1-Figure 2, the top inner wall of the purifier 1 is fixedly connected with a detection device 7. The detection device 7 determines through the cleaning switch 15 and the temperature control switch 12 that when the temperature in the filter chamber rises and the gas cleanliness is not high, when the two conditions simultaneously meet the opening standard, the cleaning switch 15 and the temperature control switch 12 are synchronously turned on, so that the circuit of the detection device 7 is connected to detect the penetration rate of the filter element 2, and detect whether the filtering effect of the filter element 2 meets the cleaning standard. When the gas cleanliness in the purification chamber is high, the conductive contact IV19 in the detection device 7 is not triggered, and the indicator light 35 is on or off, which means that the filter element 2 meets the cleaning standard; the conductive contact IV19 in the detection device 7 is connected, so that the circuit of the indicator light 35 is connected, and the indicator light 35 is displayed on the display screen 38, reminding people to replace the filter element 2, and the filtering effect of the filter element 2 is reduced and does not meet the cleaning standard. Photoresistors 13 are respectively provided at the bottom of both sides of the detection device 7, and the resistance value of the photoresistor 13 decreases with the increase of light intensity. A current amplifier 11 is provided on the top of the two photoresistors 13, and the current amplifier 11 linearly amplifies the current value in the circuit that changes due to the change in the resistance value of the photoresistors 13. The photoresistors 13 and the current amplifier 11 are both fixedly connected to the housing 10 of the detection device 7, and a closed cavity 25 is provided in the inner cavity of the detection device 7. A suspension 20 is placed at the bottom of the closed cavity 25, and the buoyancy of the magnet III 17 on the suspension 20 is equal to the gravity of the magnet III 17 itself, reducing the influence of the sliding friction force caused by the different magnetic attraction forces of the filter detection device 14 and the cleaning switch 15 on the magnet III 17, and the closed cavity 25 is completely sealed to prevent the suspension 20 from flowing out of the closed cavity 25 and affecting the detection accuracy of the detection device 7.

[0027] refer to Figure 1 , Figure 2 and Figure 4A cleaning switch 15 is fixedly connected to one end of the closed cavity 25 near the filter chamber. When the air cleanliness in the filter chamber is not high, the light beam emitted by the photometer Ⅰ9 is blocked and absorbed by the particles and dust in the air, the light intensity is reduced, the resistance value of the photoresistor 13 is increased, and the current value in the circuit changes. After the change in the current is linearly amplified by the current amplifier 11, the current value of the electromagnet Ⅱ32 connected in series with the photoresistor 13 in the circuit is synchronously reduced, the magnetic force generated by the electromagnet Ⅱ32 is reduced, and the magnetic attraction of the electromagnet Ⅱ32 to the magnet Ⅱ34 is reduced. The tension spring 36 is continuously compressed by the magnetic attraction between the two magnets. When the magnetic attraction between the two magnets is reduced to a certain critical point, that is, when the set air cleanliness in the filter chamber is reduced to a set range, the tension spring 36 pushes the magnet Ⅱ34 to move to the end away from the electromagnet Ⅱ32, so that the two conductive contacts Ⅱ33 are connected, and the circuit part of the detection device 7 is connected. The cleaning switch 15 is composed of a cleaning housing 37, a magnet II 34, an electromagnet II 32, a stretching spring 36 and a conductive contact II 33. A magnet II 34 is fixedly connected to one side of the inner cavity of the cleaning housing 37, and a connecting plate made of a non-magnetic blocking material is fixedly connected to the outer side of the magnet II 34. A stretching spring 36 is fixedly connected to the outside of the magnet II 34. When the air cleanliness in the filter room is high, the stretching spring 36 is compressed by the magnetic attraction of the electromagnet II 32 and the magnet II 34; when the air cleanliness in the filter room is not high and reaches the set standard, the spring stretching force of the stretching spring 36 is greater than the magnetic repulsion between the two magnets, and the magnet II 34 is moved away from the electromagnet II 32 until the two conductive contacts II 33 are connected. The tension spring 36 is fixedly connected to one side of the electromagnet II 32, the other side of the inner cavity of the cleaning switch 15 is fixedly connected to the electromagnet II 32, the outer side of the electromagnet II 32 is fixedly connected to a connecting plate made of non-magnetic resistive material, and the side of the magnet II 34 away from the electromagnet II 32 and the inner wall of the closed cavity 25 are respectively fixedly connected with a conductive contact piece II 33, and the two conductive contact pieces II 33 are connected to connect the detection circuit part of the detection device 7.

[0028] refer to Figure 1 , Figure 2 and Figure 5 The other end of the closed cavity 25 near the clean air chamber is fixedly connected with a filter detection device 14. When the circuit of the detection device 7 is connected, the electromagnet III 31 and the photometer II 8 in the filter detection device 14 are energized, and the filter effect of the filter element 2 is detected in cooperation with the cleaning device 15. The filter detection device 14 is composed of a detection housing 29, a conductive contact III 30 and an electromagnet III 31. The inner cavity of the detection housing 29 is fixedly connected with the electromagnet III 31, and the opposite surfaces of the electromagnet III 31 and the inner wall of the detection housing 29 away from the filter chamber are respectively fixedly connected with conductive contacts III 30.

[0029] refer to Figure 1-Figure 5, the circuits of the electromagnet I26 in the temperature control switch 12 and the electromagnet II32 in the cleaning switch 15 are both turned on synchronously with the circuit of the purifier 1, ensuring that the detection device 7 can automatically detect the filtering effect of the filter element 2 when the circuit is turned on. Due to the increase in temperature, the filtering effect of the filter element 2 may be affected. When the air cleanliness is not high, the detection effect is obvious, so when the temperature rises and the air cleanliness is not high, the detection circuit of the detection device 7 is turned on at the same time, so that the circuit of the detection device 7 is connected to detect the filtering effect of the filter element 2, and the electromagnet III31 is in a normally closed state. The magnetic poles of the electromagnet III31 and the electromagnet II32 are different from those of the magnet III17. The electromagnet III31 and the electromagnet II32 have an attraction effect on the magnet III17, and the magnetic forces of the electromagnet III31 and the electromagnet II32 are different, and the magnetic attraction forces of the magnet III17 are different, so that the magnet III17 is displaced in the closed cavity 25 to reflect the filtering effect of the filter element 2.

[0030] refer to Figure 1-Figure 2 , a magnet III17 is arranged between the filter detection device 14 and the cleaning switch 15, the outer side of the magnet III17 is fixedly connected to a connecting plate made of a non-magnetic blocking material, the connecting plate is made of a lightweight rubber material or a lightweight material, so that the magnet III17 can float on the suspension 20, the two sides of the magnet III17 are fixedly connected to the detection spring 16, the detection spring 16 is respectively fixedly connected to the filter detection device 14 and the cleaning switch 15, the top of the magnet III17 is fixedly connected to the detection rod 18, the detection rod 18 and the inner cavity top of the housing 10 are respectively fixedly connected to the conductive contact piece IV19, the two conductive contact pieces IV19 are connected to make the indicator light 35 display on the display screen 38, and the filtering effect of the filter element 2 is judged by the light and dark state of the indicator light 35 under different conditions. The two sides of the conductive contact piece IV19 fixedly connected to the inner cavity top of the housing 10 are arc-shaped, so as to prevent the conductive contact piece IV19 on the top of the magnet III17 from being blocked by the conductive contact piece IV19 fixedly connected to the inner cavity top of the housing 10 when the magnet III17 moves back and forth on the suspension 20, so that the indicator light 35 cannot be displayed on the display screen 38.

[0031] The method of use (working principle) of the present invention is as follows: through the cleaning switch 15 and the temperature control switch 12 in the detection device 7, it is determined that when the temperature in the filter chamber rises and the gas cleanliness is not high, when both conditions are met at the same time, the circuit of the detection device 7 is connected, and the filter element 2 is automatically tested for penetration, to detect whether the filtering effect of the filter element 2 meets the cleaning standard. The number of gas dust and particles in the gas before and after filtering by the filter element 2 is different. The gas in the purification room has a higher gas cleanliness after being filtered by the filter element 2. The resistance value of the photoresistor 13 on one side of the purification room is lower than the resistance value of the photoresistor 13 in the filter room. Under constant voltage conditions, the current value of the electromagnet connected in series with the photoresistor 13 also increases as the resistance value of the photoresistor 13 decreases. After the current change value is linearly amplified by the current amplifier 11, the magnetic force of the electromagnet increases as the current value increases. Then, the magnetic attraction of the electromagnet III 31 in the filter detection device 14 on the purification room side is greater than the magnetic attraction of the electromagnet II 32 in the cleaning switch 15, so that the magnetic The iron III 17 moves to one side of the filtering detection device 14, the two conductive contacts IV 19 are not connected and triggered, and the indicator light 35 does not work, which means that the filter element 2 meets the cleaning standards; when the gas cleanliness in the purification room does not meet the cleaning standards, the current value of the filtering detection device 14 is slightly greater than or even equal to the current value of the cleaning switch 15, and the detection rod 18 at the top of the magnet III 17 and the conductive contact IV 19 are displaced toward the center point of the closed cavity 25, and the two conductive contacts IV 19 are connected and triggered, so that the circuit of the indicator light 35 is connected, and the indicator light 35 is displayed on the display screen 38, reminding people to replace the filter element 2, and the filtering effect of the filter element 2 is reduced and does not meet the cleaning standards.

[0032] When it is necessary to manually check the filtering effect of the filter element 2 regularly, without stopping the machine, the worker controls the single-pole switch 39 to connect the circuit of the detection device 7. If the indicator light 35 on the display screen 38 is not displayed, it means that the filtering effect of the filter element 2 is good and it can continue to be used without replacing the filter element 2. If the indicator light 35 on the display screen 38 is turned on, the single-pole double-throw switch 40 is controlled, and the cleaning switch 15 is used to judge the cleanliness of the air in the filter chamber. If the cleaning switch is not turned on, it means that the cleanliness of the air in the purification chamber and the filter chamber is high enough, the required purification degree of the air is low, and the air cleanliness is high. There is little difference before and after the filter element 2, which means that the filter element 2 does not need to be replaced. On the contrary, if the cleaning switch 15 is turned on, it means that the cleanliness of the air in the purification chamber and the filter chamber is not high, and the purification degree of the air by the filter element 2 is not enough, which means that the filter element 2 is invalid and needs to be replaced in time.

Claims

1. A medical laboratory air purification system, comprising a purifier (1), wherein a filter element (2) is provided in the purifier (1), wherein the inner cavity of the purifier (1) is divided into two spaces, a purification chamber and a filter chamber, by the filter element (2), wherein the filter element (2) is fixedly sleeved with a filter box (3), wherein the filter box (3) is fixedly connected to the inner cavity of the purifier (1), wherein an air inlet (6) is provided at the bottom of one side of the filter chamber, wherein an air outlet (4) is provided at the top of one side of the purification chamber, wherein a fan (5) is provided in the purification chamber, wherein the fan (5) is fixedly connected to one side of the inner cavity of the purifier (1), wherein the characteristics are as follows: The bottom inner wall of the purifier (1) is fixedly connected to a photometer II (8) and a photometer I (9), and the top inner wall of the purifier (1) is fixedly connected to a detection device (7). The bottoms of both sides of the detection device (7) are provided with photoresistors (13), and the tops of the two photoresistors (13) are provided with current amplifiers (11). The photoresistors (13) and the current amplifiers (11) are fixedly connected to the housing (10) of the detection device (7). The inner cavity of the detection device (7) is provided with a sealed cavity (25), and one end of the sealed cavity (25) close to the filter chamber is fixedly connected to A cleaning switch (15), wherein the other end of the sealed cavity (25) close to the clean air chamber is fixedly connected to a filter detection device (14), a magnet III (17) is provided between the filter detection device (14) and the cleaning switch (15), detection springs (16) are fixedly connected to both sides of the magnet III (17), the detection springs (16) are respectively fixedly connected to the filter detection device (14) and the cleaning switch (15), a detection rod (18) is fixedly connected to the top of the magnet III (17), and a conductive contact piece IV (19) is respectively fixedly connected to the detection rod (18) and the top of the inner cavity of the housing (10); The cleaning switch (15) is composed of a cleaning housing (37), a magnet II (34), an electromagnet II (32), a tension spring (36) and a conductive contact piece II (33). One side of the inner cavity of the cleaning housing (37) is fixedly connected to the magnet II (34). The outer side of the magnet II (34) is fixedly connected to the tension spring (36). The tension spring (36) is fixedly connected to one side of the electromagnet II (32). The other side of the inner cavity of the cleaning switch (15) is fixedly connected to the electromagnet II (32). , the side of the magnet II (34) away from the electromagnet II (32) and the inner wall of the closed cavity (25) are respectively fixedly connected with a conductive contact piece II (33); the filtering detection device (14) is composed of a detection shell (29), a conductive contact piece III (30) and an electromagnet III (31), the inner cavity of the detection shell (29) is fixedly connected with the electromagnet III (31), and the opposite sides of the electromagnet III (31) and the inner wall of the detection shell (29) away from the filter chamber are respectively fixedly connected with a conductive contact piece III (30); A temperature control switch (12) is provided on one side of the filter chamber. The temperature control switch (12) is fixedly connected to the top of the inner cavity of the purifier (1). The temperature control switch (12) is composed of a temperature control shell (21), a tension spring (22), a magnet I (23), a conductive contact piece I (24), an electromagnet I (26), a fixing plate (27), and a thermistor (28). The top of the inner cavity of the temperature control shell (21) is fixedly connected to the tension spring (22). The tension spring (22) is fixedly connected to the magnet I (23). The bottom of the magnet I (23) is provided with an electromagnet I (26), a fixing plate (27), and a thermistor (28). The inner cavity of the temperature control shell (21) is fixedly connected to the fixing plate (27). The top and bottom of the fixing plate (27) are respectively fixedly connected to the electromagnet I (26) and the thermistor (28). The top of the magnet I (23) and the top of the inner cavity of the temperature control shell (21) are respectively provided with a conductive contact piece I (24); The circuits of the electromagnet I (26) and the electromagnet II (32) are both opened synchronously with the circuit of the purifier (1), and the electromagnet III (31) is in a normally closed state. The magnetic poles of the electromagnet III (31) and the electromagnet II (32) on the opposite sides of the magnet III (17) are respectively different.

2. A medical laboratory air purification system according to claim 1, characterized in that: A suspension (20) is placed at the bottom of the closed cavity (25), and the buoyancy of the magnet III (17) on the suspension (20) is equal to the gravity of the magnet III (17) and its connecting parts. The two sides of the conductive contact piece IV (19) fixedly connected to the top of the inner cavity of the shell (10) are arc-shaped.

3. A medical laboratory air purification system according to claim 1, characterized in that: The photoresistors (13) provided on the top of the photometer II (8) and the photometer I (9) are arranged symmetrically, and the light beams emitted by the photometer II (8) and the photometer I (9) are not blocked by objects.

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