A device for collecting and analyzing VOC release during the molding process of rubber-modified asphalt mixture

Abstract

The utility model relates to the field of collection and analysis devices, specifically a VOC release collection and analysis device during the molding process of rubber-modified asphalt mixture, comprising: a gas analysis device, a VOC gas collection hood for rubber-modified asphalt mixture, a first fan, and a second fan; one end of the first fan is connected to a first pipe, the first pipe is connected to a VOC gas collection hood for rubber-modified asphalt mixture, the other end of the first fan is connected to a second pipe, the second pipe is connected to the gas analysis device for collecting VOC gas; a special-shaped pipe is provided in the middle of the second pipe, and the special-shaped pipe is used to make the second pipe unobstructed. The second fan provided in the VOC release collection and analysis device during the molding process of rubber-modified asphalt mixture can back-blow the filter plate to remove the powder blocked on the filter; and the filter plate is detachable, and the notch is used to facilitate the collective removal of dust accumulated in the pipe.

Description

Technical Field

[0001] The utility model relates to the field of collecting and analyzing devices, in particular to a VOC release amount collecting and analyzing device in a rubber modified asphalt mixture molding process. Background Art

[0002] Gas analyzers are process analysis instruments that measure gas composition. Commonly used ones include thermal conductivity gas analyzers, electrochemical gas analyzers, and infrared absorption analyzers.

[0003] Gas analyzers are process analysis instruments that measure gas composition. In many production processes, especially those involving chemical reactions, automatic control based solely on physical parameters such as temperature, pressure, and flow is often insufficient. Due to the wide variety of analyzed gases and the variety of analysis principles, there are many types of gas analyzers. Commonly used ones include thermal conductivity gas analyzers, electrochemical gas analyzers, and infrared absorption analyzers.

[0004] The gas analysis equipment of the device is the above-mentioned gas analyzer.

[0005] VOC gas will be generated during the molding process of rubber modified asphalt mixture, and the content of VOC gas there needs to be analyzed.

[0006] However, when the VOC gas generated by the rubber-modified asphalt mixture is absorbed by an external fan, dust and powder may be adsorbed. At this time, the filter we use will be blocked by the powder, making it impossible for the gas to be transmitted. For this reason, we designed a back-flushing mechanism for online removal of powder from the filter. In summary, we have introduced a device for collecting and analyzing VOC release during the molding process of rubber-modified asphalt mixture.

[0007] As in the prior art, Chinese patent application No. 201220021304.2, a smoke combustion collection and analysis device, the technical points of which include a shell, wherein the shell side wall is provided with an air hole, a receiving plate is provided on the shell outside the air hole, an exhaust pipe communicating with the inner cavity is provided on the upper end surface of the shell, and a detection port for inserting the probe of the smoke analyzer is provided on the side wall of the exhaust pipe; the utility model aims to provide a smoke combustion collection and analysis device with a simple structure, convenient use and good effect; used for smoke detection. The device does not perform automatic dust cleaning improvement on the filter. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the defects of the prior art. The utility model proposes a device for collecting and analyzing VOC release in the molding process of rubber modified asphalt mixture.

[0009] In order to solve the above technical problems, the technical solution adopted by the utility model is: a device for collecting and analyzing VOC release during the molding process of rubber-modified asphalt mixture, comprising:

[0010] Gas analysis equipment, rubber modified asphalt mixture VOC gas collection hood, first fan, second fan;

[0011] One end of the first fan is connected to a first pipeline, the first pipeline is connected to a rubber modified asphalt mixture VOC gas collection cover, the other end of the first fan is connected to a second pipeline, the second pipeline is connected to the gas analysis equipment for collecting VOC gas;

[0012] A special-shaped pipe is arranged in the middle of the second pipe, and the second pipe is kept unobstructed by the special-shaped pipe, and a detachable filter plate is installed in the special-shaped pipe;

[0013] The output end of the second fan is connected to the special-shaped pipe through a third pipe, and is used for back-blowing the filter plate so that dust falls off the filter plate;

[0014] It also includes an electric valve installed on the second pipeline, and the electric valve is located between the third pipeline and the gas analysis equipment.

[0015] Furthermore, the cross-sectional shape of the special-shaped pipe is a closed connection between an upper semicircular ring and a lower rectangular ring, and the cross-sectional circular ring radii of the upper semicircular ring and the second pipe are equal.

[0016] Furthermore, a slot is provided at the bottom of the special-shaped pipe, a slide plate is slidably connected to the slot, the filter plate is fixedly installed on the top of the slide plate, a pressure plate is fixedly connected to the outer wall of the slide plate, and the pressure plate is fixedly installed on the special-shaped pipe through a fixing mechanism to seal the slot.

[0017] Furthermore, the fixing mechanism includes a plurality of threaded holes formed at the bottom of the special-shaped pipe, the pressure plate is provided with a plurality of through holes, and also includes screws, the screws pass through the through holes and are threadedly connected in the threaded holes.

[0018] Furthermore, a first rubber layer is provided on the outer wall of the filter plate.

[0019] Furthermore, a second rubber layer is provided on the outer wall of the pressing plate.

[0020] Furthermore, a handle is installed at the bottom of the pressing plate.

[0021] Compared with the prior art, the beneficial effects of the utility model include: the second fan can back-blow the filter screen to remove the powder blocked on the filter screen;

[0022] The filter plate is detachable, and the dust accumulated in the pipe can be removed collectively through the slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0024] Figure 1 The overall structural diagram proposed according to one embodiment of the utility model is schematically shown;

[0025] Figure 2 Schematically shows a method according to an embodiment of the present invention. Figure 1 A schematic diagram of a local enlarged structure;

[0026] Figure 3 The schematic diagram of the structure of the AA section proposed according to one embodiment of the utility model is shown;

[0027] Figure 4 The schematic diagram of the structure of the BB cross-section proposed according to one embodiment of the utility model is shown;

[0028] Figure 5 Schematically shows an enlarged structural diagram of C proposed according to an embodiment of the utility model;

[0029] Figure 6 The enlarged structural diagram of D proposed according to one embodiment of the utility model is schematically shown.

[0030] Numbers in the figure: 1. VOC gas collection cover of rubber modified asphalt mixture; 2. First pipeline; 3. First fan; 4. Second pipeline; 5. Special-shaped pipeline; 6. Third pipeline; 7. Second fan; 8. Gas analysis equipment; 9. Electric valve; 10. Filter plate; 11. Handle; 12. Threaded hole; 13. Screw; 14. Through hole; 15. Press plate; 16. Notch; 17. Slide plate. DETAILED DESCRIPTION

[0031] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0032] According to one embodiment of the present invention, Figures 1 to 6A device for collecting and analyzing VOC emission during the molding process of rubber-modified asphalt mixture, comprising:

[0033] Gas analysis equipment 8, rubber modified asphalt mixture VOC gas collection cover 1, first fan 3, second fan 7;

[0034] One end of the first fan 3 is connected to the first pipeline 2, the first pipeline 2 is connected to the rubber modified asphalt mixture VOC gas collection cover 1, the other end of the first fan 3 is connected to the second pipeline 4, the second pipeline 4 is connected to the gas analysis equipment 8 for collecting VOC gas;

[0035] A special-shaped pipe 5 is provided in the middle of the second pipe 4, and the special-shaped pipe 5 makes the second pipe 4 unobstructed, and a detachable filter plate 10 is installed in the special-shaped pipe 5;

[0036] The output end of the second fan 7 is connected to the special-shaped pipe 5 through the third pipe 6, and is used to back-blow the filter plate 10 so that the dust on the filter plate 10 falls off;

[0037] It also includes an electric valve 9 installed on the second pipeline 4 , and the electric valve 9 is located between the third pipeline 6 and the gas analysis device 8 .

[0038] First, the power supply of the first fan 3 is started, so that the rubber modified asphalt mixture VOC gas collection hood 1 absorbs the gas generated by the rubber modified asphalt mixture, and transmits it to the gas analysis device 8 for analysis and processing through the filter screen 10. When the filter screen 10 is found to be blocked, the first fan 3 is turned off, and the electric valve 9 blocks the second pipeline 4. At this time, the second fan 7 is started to blow air, and the air is blown to the other side of the filter screen 10, that is, backblowing, so that the powder on the filter screen 10 is blown off, and then the second fan 7 is turned off, so that the electric valve 9 is opened, and the first fan 3 is started, so that the device performs normal gas analysis operations.

[0039] Specifically, Figure 4 As shown, the cross-sectional shape of the special-shaped pipe 5 is a closed connection between an upper semicircular ring and a lower rectangular ring, and the radii of the cross-sectional circular rings of the upper semicircular ring and the second pipe 4 are equal.

[0040] The rectangular ring-shaped lower portion can be used as a dust collection area to collect powders. After the filter plate 10 is disassembled, the collected powders are collectively removed.

[0041] Specifically, Figure 5 As shown, a slot 16 is provided at the bottom of the special-shaped pipe 5, a slide plate 17 is slidably connected inside the slot 16, a filter plate 10 is fixedly installed on the top of the slide plate 17, a pressure plate 15 is fixedly connected to the outer wall of the slide plate 17, and the pressure plate 15 is fixedly installed on the special-shaped pipe 5 through a fixing mechanism to seal and block the slot 16.

[0042] The fixing mechanism is disassembled to remove the filter plate 10, and the notch 16 is exposed, so that the accumulated powder dust can be easily removed.

[0043] Specifically, Figure 5 As shown, the fixing mechanism includes a plurality of threaded holes 12 opened at the bottom of the special-shaped pipe 5 , a plurality of through holes 14 opened on the pressure plate 15 , and also includes screws 13 , which pass through the through holes 14 and are threadedly connected in the threaded holes 12 .

[0044] The pressing plate 15 is fixedly mounted on the special-shaped pipe 5 by means of screws 13 , and blocks the notch 16 .

[0045] Specifically, Figure 3 As shown, the outer wall of the filter plate 10 is provided with a first rubber layer.

[0046] The first rubber layer is provided so that the filter plate 10 can filter all gases.

[0047] Specifically, Figure 4 As shown, the outer wall of the pressure plate 15 is provided with a second rubber layer.

[0048] The pressing plate 15 can seal the notch 16 .

[0049] Specifically, Figure 3 As shown, a handle 11 is installed at the bottom of the pressing plate 15 .

[0050] The handle 11 is provided to facilitate pulling the pressing plate 15 .

[0051] In this embodiment, the power supply of the first fan 3 is first started, so that the rubber modified asphalt mixture VOC gas collection hood 1 absorbs the gas generated by the rubber modified asphalt mixture, and transmits it to the gas analysis equipment 8 through the filter screen 10 for analysis and processing. When the filter screen 10 is found to be blocked, the first fan 3 is turned off, and the electric valve 9 is made to block the second pipeline 4. At this time, the second fan 7 is started to blow air, and the air is blown to the other side of the filter screen 10, that is, backblowing, so that the powder on the filter screen 10 is blown down, and then the second fan 7 is turned off, so that the electric valve 9 is opened, and the first fan 3 is started, so that the device performs normal gas analysis operations. In order to make the dust that falls to the lower rectangular ring under the action of gravity after backblowing be removed, after the dust accumulates for a preset time, the notch 16 is designed, and the filter screen is disassembled so that the dust moves from the notch 16 to the outside.

[0052] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A device for collecting and analyzing VOC emission during the molding process of rubber-modified asphalt mixture, characterized in that: include: Gas analysis equipment (8), a rubber-modified asphalt mixture VOC gas collection hood (1), a first fan (3), and a second fan (7); One end of the first fan (3) is connected to a first pipeline (2), the first pipeline (2) is connected to a rubber-modified asphalt mixture VOC gas collection hood (1), the other end of the first fan (3) is connected to a second pipeline (4), the second pipeline (4) is connected to the gas analysis device (8) for collecting VOC gas; A special-shaped pipe (5) is arranged in the middle of the second pipe (4), and the special-shaped pipe (5) enables the second pipe (4) to be unobstructed, and a detachable filter plate (10) is installed in the special-shaped pipe (5); The output end of the second fan (7) is connected to the special-shaped pipe (5) through a third pipe (6) and is used to back-blow the filter plate (10) so that dust on the filter plate (10) falls off; It also includes an electric valve (9) installed on the second pipeline (4), and the electric valve (9) is located between the third pipeline (6) and the gas analysis device (8).

2. The device for collecting and analyzing VOC emission during the molding process of rubber-modified asphalt mixture according to claim 1 is characterized in that: The cross-sectional shape of the special-shaped pipe (5) is a closed connection between an upper semicircular ring and a lower rectangular ring, and the cross-sectional circular ring radii of the upper semicircular ring and the second pipe (4) are equal.

3. The device for collecting and analyzing VOC emission during the rubber modified asphalt mixture molding process according to claim 2 is characterized in that: A notch (16) is provided at the bottom of the special-shaped pipe (5), a slide plate (17) is slidably connected to the inside of the notch (16), the filter plate (10) is fixedly mounted on the top of the slide plate (17), a pressing plate (15) is fixedly connected to the outer wall of the slide plate (17), and the pressing plate (15) is fixedly mounted on the special-shaped pipe (5) through a fixing mechanism to seal and block the notch (16).

4. The device for collecting and analyzing VOC emission during the molding process of rubber-modified asphalt mixture according to claim 3 is characterized in that: The fixing mechanism comprises a plurality of threaded holes (12) formed at the bottom of the special-shaped pipe (5), a plurality of through holes (14) formed on the pressing plate (15), and a screw (13) passing through the through holes (14) and being threadedly connected in the threaded holes (12).

5. The device for collecting and analyzing VOC emission during the rubber modified asphalt mixture molding process according to claim 4 is characterized in that: The outer wall of the filter plate (10) is provided with a first rubber layer.

6. The device for collecting and analyzing VOC emission during the molding process of rubber-modified asphalt mixture according to claim 5 is characterized in that: The outer wall of the pressing plate (15) is provided with a second rubber layer.

7. The device for collecting and analyzing VOC emission during the molding process of rubber-modified asphalt mixture according to claim 3 is characterized in that: A handle (11) is installed at the bottom of the pressing plate (15).

Images