CN103091464B - Testing device for multiple performances of air purification material - Google Patents

Abstract

The invention discloses a multi-performance testing device for an air purification material, comprising a sealed test box, a hydraulic press, a medium-wave ultraviolet lamp tube, an electromagnetic heater, a movable trolley for fixing the air purification material specimen to be tested, and a power mechanism for driving the movable trolley to move , the side wall of the sealed test chamber is provided with a waste gas inlet and a gas concentration measuring port, a waste gas valve is provided on the waste gas inlet, a gas concentration measuring valve is provided on the gas concentration measuring port, the hydraulic machine is fixed in the sealed test chamber, and the medium-wave ultraviolet lamp tube Fixed on the inner wall of the sealed test box, the bottom of the sealed test box is fixed with wheel rails, the movable trolley is set on the wheel rails and can slide back and forth along the wheel rails, the movable trolley is located directly under the hydraulic press, and the electromagnetic heater is installed on the movable trolley bottom. The invention has the advantages of simple structure, reasonable design, convenient use and good use effect, and can test the air-purifying effect of various characteristics such as thermoelectricity, piezoelectricity and photocatalytic effect of the air-purifying material.

Description

Air purification material multi-performance testing device

technical field

The invention belongs to a test device for air purification function of road engineering or construction engineering materials, in particular to a multi-performance test device for air purification materials.

Background technique

At present, with the rapid development of my country's economy and the continuous improvement of residents' living standards, cars have gradually entered every family, but the carbon monoxide, carbon dioxide, nitrogen oxides, hydrocarbons, etc. emitted by cars are also gradually increasing, which not only increases the temperature of the atmosphere on the earth's surface High, ozone layer destruction and macro-ecological environment deterioration, and carbon dioxide gas will directly or indirectly form a "synergy" hazard to the health of animals and plants with other harmful substances. Therefore, reducing the content of carbon monoxide, carbon dioxide, nitrogen oxides, and hydrocarbons in the environment is not only a contribution to environmental protection projects in the global context, but also an effective measure to protect one's own living environment and improve one's own quality of life.

At present, the main air purification methods for treating automobile exhaust are mainly control technologies such as adsorption, plasma, and catalytic oxidation. Test instruments for these air purification technologies have been formed, and remarkable achievements have been made in the field of air purification testing. A number of recent tests have shown that some materials have extremely strong pyroelectricity and piezoelectricity, and have the function of purifying air pollution gases in the environment. For example, the test found that the tourmaline negative ion powder is based on the natural polar mineral tourmaline, and is compounded with rare earth minerals with selective adsorption functions to form an air purification material. The tourmaline negative ion powder has extremely strong pyroelectricity, piezoelectricity and Negative ion release ability, the negative oxygen ions released by it can adsorb and remove hydrocarbons and harmful gases, and have the function of purifying air pollution gases in the environment. The test device for air purification by the thermoelectricity and piezoelectricity of tourmaline and other similar materials is still in the blank. Based on the thermoelectricity, piezoelectricity, photocatalytic effect and adsorption of this type of material, the multifunctional air purification test device is More to be developed. Therefore, in the field of road engineering air purification testing, a technical problem that needs to be solved urgently is to provide a kind of air purification material testing device that can target various characteristics such as material pyroelectricity, piezoelectricity, photocatalytic effect and adsorption.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and provide a multi-performance testing device for air purification materials, which has simple structure, reasonable design, convenient use and operation, and good use effect. The air purification effect of various characteristics such as sex and photocatalytic effect was tested.

In order to achieve the above object, the technical solution adopted in the present invention is: a multi-performance testing device for air purification materials, characterized in that it includes a sealed test box, a hydraulic press, a medium-wave ultraviolet lamp tube, an electromagnetic heater, and is used to fix the air to be tested. The movable trolley of the purification material test piece and the power mechanism that drives the movable trolley to move, the side wall of the sealed test chamber is provided with an exhaust gas inlet and a gas concentration measurement port, the exhaust gas inlet is provided with an exhaust gas valve, and the gas concentration measurement A gas concentration measurement valve is provided on the mouth, the hydraulic machine is fixed inside the sealed test box, the medium-wave ultraviolet lamp is fixed on the inner wall of the sealed test box, and the bottom of the sealed test box is fixed with a wheel rail. The number of the wheel rails is two and the two wheel rails are arranged in parallel, the movable trolley is arranged on the wheel rails and can slide forward and backward along the wheel rails, the movable trolley is located directly below the hydraulic press, and the electromagnetic heater is installed At the bottom of the movable trolley, the power mechanism includes a motor, a first pulley, a second pulley, a belt, a fixed shaft, a rotating disc, an installation shaft and a transmission rod, the motor is installed in the inside of the sealed test box, and the installation shaft It is vertically fixed inside the sealed test chamber, the first pulley is fixedly installed on the output shaft of the motor, the second pulley is fixed on the bottom of the rotating disc, the second pulley is arranged on the upper end of the installation shaft and is connected with the installation The shaft is rotationally connected, the second pulley and the first pulley are connected by a belt to form a belt transmission, the installation shaft is fixed on the rotating disk, one end of the transmission rod is sleeved on the installation shaft, and the other end of the transmission rod is connected to the The movable trolley is hinged.

The above multi-performance testing device for air purification materials is characterized in that: the airtight test box is provided with a transparent airtight door, and the transparent airtight door is provided with a handle.

The above-mentioned air purification material multi-performance testing device is characterized in that: the sealed test box is provided with a hydraulic press switch for controlling the operation of the hydraulic press, a medium-wave ultraviolet lamp switch for controlling the work of the medium-wave ultraviolet lamp, and a switch for controlling the operation of the medium-wave ultraviolet lamp. A motor switch for the motor to work and a temperature controller for controlling the operation of the electromagnetic heater, the hydraulic press switch, the medium-wave ultraviolet lamp switch, the motor switch and the temperature controller are all arranged above the transparent airtight door.

The above-mentioned air purification material multi-performance testing device is characterized in that: the hydraulic machine is fixed inside the sealing test box through the hydraulic machine fixed shaft, one end of the hydraulic machine fixed shaft is fixedly connected with the inner wall of the sealing test box, and the hydraulic machine fixed shaft The other end is fixedly connected with the hydraulic press.

The above-mentioned multi-performance testing device for air purification materials is characterized in that: the number of the medium-wave ultraviolet lamps is four, and the four medium-wave ultraviolet lamps are arranged symmetrically.

The above-mentioned multi-performance testing device for air purification materials is characterized in that: an air pressure balance valve is arranged on the top of the sealed test box.

The above-mentioned air purification material multi-performance testing device is characterized in that: the air purification material test piece to be tested is fixed on the movable trolley through the specimen fixing strip and tightening bolts, and the test specimen fixing strip is fixed on the movable trolley, so The above tightening bolts are set on the specimen fixing strips.

Compared with the prior art, the present invention has the following advantages:

1. The present invention has simple structure, reasonable design, convenient use and operation, and good use effect.

2. In the present invention, a sealed environment is provided by a sealed test chamber, and the air purification effect brought by the adsorption of the test material is tested. The influence of the photocatalysis of the material on the exhaust gas purification performance is tested by the medium-wave ultraviolet lamp tube, and the material is tested by the electromagnetic heater. The influence of the pyroelectric performance on the exhaust gas purification effect, the air purification material sample to be tested is subjected to repeated rolling through the hydraulic press and the power mechanism, and the piezoelectric performance of the test material is used to purify the exhaust gas. Therefore, the present invention can affect the thermoelectricity, The influence of various characteristics such as piezoelectricity, photocatalytic effect and adsorption on the effect of purifying air was tested.

3. In the present invention, an air pressure balance valve is arranged on the top of the airtight test chamber. When the exhaust gas is introduced into the exhaust gas analyzer and tested, the air pressure balance valve maintains the internal air pressure of the airtight test chamber to ensure the airtightness test during the exhaust gas introduction and test process. The air pressure in the box is constant, eliminating the influence of air pressure changes in the sealed test box on the test results of the exhaust gas analyzer.

4. The present invention has complete functions and can be popularized and applied in the field of air purification material testing.

The present invention will be described in further detail below with reference to the accompanying drawings and examples.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the external structure of the present invention.

Fig. 3 is a top view of the internal structure of the present invention.

Fig. 4 is a right view of the internal structure of Fig. 1 .

Explanation of reference signs:

1—airtight test chamber; 2—transparent airtight door; 3—handle;

4—temperature controller; 5—hydraulic machine switch; 6—medium wave ultraviolet lamp switch;

7—motor switch; 8—air pressure balance valve; 11—exhaust gas inlet;

12—gas concentration measuring port 13—hydraulic press; 14—fixed shaft of hydraulic press;

15—medium wave ultraviolet lamp; 16—rolling head; 17—movable trolley;

18—Specimen fixing strip; 19—Installation shaft; 20-1—Exhaust gas valve;

20-2—gas concentration measurement valve; 21—wheel rail; 22—electromagnetic heater;

23—tightening bolt; 24—transmission rod; 25—turning disc;

26—belt; 26-1—the first pulley; 26-2—the second pulley;

27—motor; 28—fixed shaft.

Detailed ways

As shown in Figures 1 to 4, the present invention includes a sealed test chamber 1, a hydraulic press 13, a medium-wave ultraviolet lamp tube 15, an electromagnetic heater 22, a movable trolley 17 for fixing the air purification material test piece to be tested and a driving movable trolley 17. The power mechanism of the movement. The side wall of the sealed test chamber 1 is provided with an exhaust gas inlet 11 and a gas concentration measuring port 12. The exhaust gas inlet 11 is provided with a waste gas valve 20-1. The gas concentration measuring port 12 is A gas concentration measurement valve 20-2 is provided, the hydraulic press 13 is fixed inside the sealed test box 1, the medium-wave ultraviolet lamp tube 15 is fixed on the inner wall of the sealed test box 1, and the inside of the sealed test box 1 is Bottom is fixed with wheel rail 21, and the quantity of described wheel rail 21 is two and two wheel rails 21 are arranged in parallel, and described movable trolley 17 is arranged on wheel rail 21 and can slide forward and backward along wheel rail 21, and described movable Dolly 17 is positioned at just below hydraulic press 13, and described electromagnetic heater 22 is installed on the bottom of movable dolly 17, and described power mechanism comprises motor 27, first pulley 26-1, second pulley 26-2, belt 26, fixed shaft 28. The rotating disc 25, the installation shaft 19 and the transmission rod 24, the motor 27 is installed inside the sealed test box 1, the installation shaft 30 is vertically fixed inside the sealed test box 1, and the first pulley 26- 1 is fixedly installed on the output shaft of the motor 27, the second pulley 26-2 is fixed on the bottom of the rotating disk 25, the second pulley 26-2 is arranged on the upper end of the installation shaft 30 and is rotatably connected with the installation shaft 30, The second pulley 26-2 and the first pulley 26-1 are connected by a belt 26 to form a belt transmission, the installation shaft 19 is fixed on the rotating disk 25, and one end of the transmission rod 24 is sleeved on the installation shaft 19, so The other end of said transmission rod 24 is hinged with movable trolley 17.

As shown in Figure 2, a transparent airtight door 2 is provided on the airtight test chamber 1, which is convenient for observing its internal conditions outside the airtight airtight chamber 1; a handle 3 is arranged on the transparent airtight door 2, which is convenient for opening the transparent airtight door 2.

As shown in Figure 2, the sealed test chamber 1 is provided with a hydraulic press switch 5 for controlling the operation of the hydraulic press 13, a medium-wave ultraviolet lamp switch 6 for controlling the operation of the medium-wave ultraviolet lamp tube 15, and a medium-wave ultraviolet lamp switch 6 for controlling the operation of the motor 27. The motor switch 7 and the temperature controller 4 for controlling the operation of the electromagnetic heater 22, the hydraulic press switch 5, the medium-wave ultraviolet lamp switch 6, the motor switch 7 and the temperature controller 4 are all arranged above the transparent airtight door 2 .

As shown in Fig. 1, Fig. 3 and Fig. 4, the hydraulic machine 13 is fixed inside the sealing test chamber 1 through the hydraulic machine fixed shaft 14, and one end of the hydraulic machine fixed shaft 14 is fixedly connected with the inner wall of the sealing test chamber 1, and the The other end of the hydraulic press fixed shaft 14 is fixedly connected with the hydraulic press 13 .

In this embodiment, the number of the medium-wave ultraviolet lamps 15 is four, and the four medium-wave ultraviolet lamps 15 are arranged symmetrically; the medium-wave ultraviolet lamps 15 mainly provide high-energy light sources for the air purification material specimens to be tested. , simulating sunlight, and the power of each medium-wave ultraviolet lamp tube 15 is 1000W.

As shown in Figures 1 and 2, the top of the sealed test chamber 1 is provided with an air pressure balance valve 8, and when the exhaust gas and exhaust gas analyzer are tested, the internal air pressure of the sealed test chamber 1 is maintained by the air pressure balance valve 8 to ensure The air pressure in the sealed test chamber 1 is constant during the exhaust gas introduction and testing process, eliminating the influence of air pressure changes in the sealed test chamber 1 on the test results of the exhaust gas analyzer.

As shown in Fig. 1, Fig. 3 and Fig. 4, the air purification material test piece to be tested is fixed on the movable trolley 17 by the test piece fixing strip 18 and the tightening bolt 23, and the described test piece fixing strip 18 is fixed on the movable trolley 17 Above, the tightening bolts 23 are arranged on the specimen fixing strip 18, which is convenient for fixing.

The working principle of the present invention is as follows: according to the rut plate test piece model, the test piece of air purification material to be tested is formed, and the formed test piece of air purification material to be tested is fixed on the movable trolley 17 through the test piece fixing strip 18 and the tightening bolt 23. The exhaust gas generator feeds exhaust gas into the sealed test chamber 1 through the exhaust gas inlet 11, connects the exhaust gas analyzer at the gas concentration measuring port 12, tests the initial exhaust gas concentration β ₁ inside the sealed test chamber 1, and then closes the exhaust gas valve 20-1, The gas concentration measurement valve 20-2 and the air pressure balance valve 8, every time t, open the gas concentration measurement valve 20-2 to test the exhaust gas concentration in the sealed test chamber 1 to be β _n until the concentration change does not exceed 5%, from β= β _n - β ₁ is calculated to obtain the purification effect of the material's adsorption on exhaust gas. In the above process, the condition of the air purification material sample to be tested can be changed to measure its purification effect on exhaust gas, specifically through the following four aspects: (1) Turn on the electromagnetic heater 22 through the temperature controller 4 Heating, and setting the heating temperature of the air-purifying material sample to be tested by the temperature controller 4, and detecting the temperature at the bottom of the movable trolley 17 in real time by the temperature probe of the temperature controller 4 (the temperature at the bottom of the movable trolley 17 is similar to the temperature at the bottom of the air-purifying material to be tested) temperature of the test piece), and the temperature of the air purification material sample to be tested is displayed on the temperature controller 4. When the air purification material sample to be tested reaches the set temperature, exhaust gas is introduced into the test seal test chamber 1 to measure the test seal. The initial concentration of the exhaust gas in the test chamber 1, then turn off the electromagnetic heater 22, close the exhaust gas valve 20-1, the gas concentration measurement valve 20-2 and the air pressure balance valve 8, and wait for the test piece of air purification material to drop to room temperature, then test the sealing The exhaust gas concentration in the test chamber 1, and thus the influence of the thermoelectric properties of the test material on the exhaust gas purification effect; (2) Control the opening of the hydraulic press 13 through the hydraulic press switch 5, so that the rolling head 16 of the hydraulic press 13 falls to the air purification material to be tested. surface of the parts, control the pressure within the range of 0 ~ 20KN, pass the exhaust gas into the test sealed test chamber 1, measure the initial concentration of the exhaust gas in the test sealed test chamber 1, then turn off the electromagnetic heater 22, close the exhaust gas valve 20-1, the gas The concentration measurement valve 20-2 and the air pressure balance valve 8 are opened by the motor switch 7 to control the motor 27. The motor 27 drives the first pulley 26-1 to rotate, and the belt 26 drives the second pulley 26-2 to rotate. Because the second pulley 26 -2 is fixed on the bottom of the rotating disc 25, so the rotating disc 25 rotates, because the movable trolley 17 is connected with the rotating disc 25 by the transmission rod 24 and the mounting shaft 19, so that the rolling wheel of the movable trolley 17 moves back and forth on the wheel rail 21, The air-purifying material sample to be tested is rolled by the rolling head 16 of the hydraulic press 13, so that the air-purifying material sample to be tested is repeatedly pressed, and the exhaust gas concentration in the sealed test chamber 1 is tested every t time until the concentration change does not exceed 5%, the impact of the piezoelectric performance of the test material on the exhaust gas purification effect; (4) pass the exhaust gas into the test sealed test chamber 1, measure the initial concentration of the exhaust gas in the test sealed test chamber 1, turn off the electromagnetic heater 22, Close the waste gas valve 20-1, the gas concentration measurement valve 20-2 and the air pressure balance valve 8, then control the medium wave ultraviolet lamp tube 15 to turn on through the medium wave ultraviolet lamp switch 6, and test the exhaust gas in the sealed test chamber 1 every t time Concentration until the concentration change does not exceed 5%, thus testing the influence of the photocatalytic effect of the material on the exhaust gas purification effect. In addition, the above four aspects can also be combined arbitrarily, and the purification effect on exhaust gas can be measured by changing the conditions of the air purification material specimen to be tested.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any way. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present invention still belong to the technology of the present invention. within the scope of protection of the scheme.

Claims (7)

1. the many performance testing devices of material for air purification, it is characterized in that: comprise leakage test case (1), hydropress (13), medium-wave ultraviolet lamp pipe (15), electromagnetic heater (22), for the actuating unit that billy gate (17) and drive billy gate (17) of fixing material for air purification test specimen to be measured are moved, the sidewall of described leakage test case (1) is provided with exhaust gas inlet (11) and gas concentration measuring mouth (12), described exhaust gas inlet (11) is provided with waste gas valve (20-1), described gas concentration measuring mouth (12) is provided with gas concentration measuring valve (20-2), described hydropress (13) is fixed on the inside of leakage test case (1), described medium-wave ultraviolet lamp pipe (15) is fixed on the inwall of leakage test case (1), the casing inner bottom part of described leakage test case (1) is fixed with wheel track (21), the quantity of described wheel track (21) is two and two wheel tracks (21) be arranged in parallel, it is upper and can along wheel track (21) slide anteroposterior that described billy gate (17) is arranged on wheel track (21), described billy gate (17) is positioned at immediately below hydropress (13), described electromagnetic heater (22) is arranged on the bottom of billy gate (17), described actuating unit comprises motor (27), first belt pulley (26-1), second belt pulley (26-2), belt (26), stationary shaft (28), rolling disc (25), installation shaft (19) and drive link (24), described motor (27) is arranged on the inside of leakage test case (1), described installation shaft (30) is vertically fixed on the inside of leakage test case (1), described first belt pulley (26-1) is fixedly mounted on the output shaft of motor (27), described second belt pulley (26-2) is fixed on the bottom of rolling disc (25), described second belt pulley (26-2) is arranged on the upper end of installation shaft (30) and is rotationally connected with installation shaft (30), described second belt pulley (26-2) and the first belt pulley (26-1) are connected to form band transmission by belt (26), described installation shaft (19) is fixed on rolling disc (25), one end of described drive link (24) is enclosed within installation shaft (19), the other end and the billy gate (17) of described drive link (24) are hinged.

2. according to the many performance testing devices of material for air purification according to claim 1, it is characterized in that: described leakage test case (1) is provided with transparent sealing door (2), described transparent sealing door (2) is provided with handle (3).

3. according to the many performance testing devices of material for air purification according to claim 2, it is characterized in that: described leakage test case (1) is provided with the hydropress switch (5) worked for hydraulic control machine (13), for controlling the medium-wave ultraviolet lamp pipe switch (6) that medium-wave ultraviolet lamp pipe (15) works, for controlling motor switch (7) that motor (27) works and for controlling the temperature controller (4) that electromagnetic heater (22) works, described hydropress switch (5), medium-wave ultraviolet lamp pipe switch (6), motor switch (7) and temperature controller (4) are all arranged on the top of transparent sealing door (2).

4. according to the many performance testing devices of the material for air purification described in claim 1 or 2, it is characterized in that: described hydropress (13) is fixed on the inside of leakage test case (1) by hydropress stationary shaft (14), one end of described hydropress stationary shaft (14) is fixedly connected with the inwall of leakage test case (1), and the other end of described hydropress stationary shaft (14) is fixedly connected with hydropress (13).

5. according to the many performance testing devices of the material for air purification described in claim 1 or 2, it is characterized in that: the quantity of described medium-wave ultraviolet lamp pipe (15) is four, four described medium-wave ultraviolet lamp pipes (15) are symmetrical arranged.

6. according to the many performance testing devices of the material for air purification described in claim 1 or 2, it is characterized in that: the top of described leakage test case (1) is provided with air pressure double-beat drop valve (8).

7. according to the many performance testing devices of the material for air purification described in claim 1 or 2, it is characterized in that: described material for air purification test specimen to be measured is fixed on billy gate (17) by test specimen fixed strip (18) and clamp stud (23), described test specimen fixed strip (18) is fixed on billy gate (17), and described clamp stud (23) is arranged on test specimen fixed strip (18).