Asphalt laboratory ventilation unit

Abstract

The utility model relates to a ventilation technical field especially, it is an asphalt laboratory ventilation equipment, including the casing, the casing upper end intercommunication is provided with the exhaust pipe, the lower end fixed connection of casing has the filter screen, the filter screen is rotated and is connected with the reciprocating screw rod through the bearing, reciprocating screw rod screw penetrates the moving plate, the moving plate is positioned through the positioning mechanism, the moving plate is fixedly connected with the cleaning brush, the cleaning brush with filter screen abuts and connects, the moving plate is connected with the box through the connecting mechanism, reciprocating screw rod is connected with the exhaust fan through the transmission mechanism, the exhaust fan installs in the casing. The utility model guarantees the unobstructed of mesh, thereby guarantees the ventilation effect of filter screen.

Description

Technical Field

[0001] This utility model relates to the field of ventilation technology, and in particular to a ventilation device for an asphalt testing laboratory. Background Technology

[0002] During asphalt testing, a large amount of toxic gases such as asphalt fumes, trichloroethylene vapor, and kerosene vapor are produced. To prevent people from inhaling these gases and causing harm, ventilation equipment is used. However, asphalt fumes easily adhere to the filter screens of the ventilation equipment, making the filter screens sticky and causing dust to adhere to them, leading to clogging and affecting the ventilation effect of the equipment. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies that cause filter clogging, thereby affecting the ventilation effect of ventilation equipment, and to propose a ventilation device for an asphalt testing laboratory.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Design a ventilation device for an asphalt testing laboratory, including a housing, an exhaust pipe connected to the upper end of the housing, a filter screen fixedly connected to the lower end of the housing, a reciprocating threaded rod rotatably connected to the filter screen via a bearing, the reciprocating threaded rod threaded through a movable plate, the movable plate being positioned by a positioning mechanism, a cleaning brush fixedly connected to the movable plate, the cleaning brush abutting against the filter screen, a box body connected to the movable plate via a connecting mechanism, and an exhaust fan connected to the reciprocating threaded rod via a transmission mechanism, the exhaust fan being installed inside the housing.

[0006] Preferably, the positioning mechanism includes a limiting rod, which is fixedly connected to the filter screen and passes through the movable plate.

[0007] Preferably, the connecting mechanism includes a connecting block, which is fixedly connected to the housing. A T-slot is provided in the connecting block, and a T-block is slidably disposed in the T-slot. The T-block is fixedly connected to the movable plate.

[0008] Preferably, a connecting lug is fixedly connected to the movable plate, and a bolt is threaded through the connecting lug, the bolt being threadedly connected to the cleaning brush.

[0009] Preferably, the bolt is a rust-proof bolt.

[0010] Preferably, the transmission mechanism includes a first friction wheel, which is fixedly connected to the reciprocating threaded rod. A second friction wheel abuts against the first friction wheel. A rotating shaft is fixedly connected to the second friction wheel. The rotating shaft is rotatably connected to the housing via a bearing. A second bevel gear is fixedly connected to the rotating shaft. A first bevel gear meshes with the second bevel gear. The first bevel gear is fixedly connected to the rotating shaft of the exhaust fan.

[0011] Preferably, the diameter of the first friction wheel is larger than the diameter of the second friction wheel.

[0012] The present invention proposes a ventilation device for an asphalt testing laboratory, the advantages of which are: by rotating a reciprocating threaded rod, a moving plate is driven to move, thereby causing the cleaning brush to move. The cleaning brush cleans the filter screen, and the cleaned material falls into the box for collection, ensuring the unobstructed mesh and thus ensuring the ventilation effect of the filter screen. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a ventilation device for an asphalt testing laboratory proposed in this utility model;

[0014] Figure 2 This is a perspective view of a ventilation device for an asphalt testing laboratory proposed in this utility model;

[0015] Figure 3 This is a three-dimensional sectional view of a ventilation device for an asphalt testing laboratory proposed in this utility model;

[0016] Figure 4 This utility model proposes a ventilation device for an asphalt testing laboratory. Figure 3 The front view;

[0017] Figure 5 A perspective view of the cleaning brush portion of a ventilation device for an asphalt testing laboratory according to this utility model;

[0018] Figure 6 This utility model proposes a ventilation device for an asphalt testing laboratory. Figure 5 Enlarged view of section A.

[0019] In the diagram: 1. Exhaust pipe; 2. Housing; 3. Box body; 4. Connecting block; 5. Filter screen; 6. First friction wheel; 7. Limiting rod; 8. Reciprocating threaded rod; 9. Rotating shaft; 10. Exhaust fan; 11. First bevel gear; 12. Second bevel gear; 13. Connecting ear; 14. Cleaning brush; 15. Moving plate; 16. T-block; 17. Second friction wheel. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example 1: Refer to Figure 1-5 A ventilation device for an asphalt testing laboratory includes a housing 2. An exhaust pipe 1 is connected to the upper end of the housing 2. A filter screen 5 is fixedly connected to the lower end of the housing 2. A reciprocating threaded rod 8 is rotatably connected to the filter screen 5 via a bearing. The reciprocating threaded rod 8 is threaded through a movable plate 15. The movable plate 15 is positioned by a positioning mechanism. A cleaning brush 14 is fixedly connected to the movable plate 15 and abuts against the filter screen 5. A box 3 is connected to the movable plate 15 via a connecting mechanism. An exhaust fan 10 is connected to the reciprocating threaded rod 8 via a transmission mechanism. The exhaust fan 10 is installed inside the housing 2. The rotation of the reciprocating threaded rod 8 drives the movable plate 15 to move, thereby causing the cleaning brush 14 to move. The cleaning brush 14 cleans the filter screen 5. The cleaned material falls into the box 3 for collection, ensuring the unobstructed mesh and thus ensuring the ventilation effect of the filter screen 5.

[0022] The positioning mechanism includes a limiting rod 7, which is fixedly connected to the filter screen 5 and passes through the moving plate 15. By using the limiting rod 7, the moving plate 15 is limited and supported, preventing the moving plate 15 from rotating.

[0023] Example 2: Refer to Figure 6 As another preferred embodiment of the present invention, based on embodiment 1, the connecting mechanism includes a connecting block 4, which is fixedly connected to the box body 3. A T-shaped groove is provided in the connecting block 4, and a T-shaped block 16 is slidably arranged in the T-shaped groove. The T-shaped block 16 is fixedly connected to the moving plate 15. By separating the T-shaped block 16 from the T-shaped groove, the box body 3 can be removed so that the contents of the box body 3 can be poured out.

[0024] Example 3: Reference Figure 6 As another preferred embodiment of this utility model, based on embodiment 2, a connecting ear 13 is fixedly connected to the movable plate 15, and a bolt is threaded through the connecting ear 13. The bolt is a rust-proof bolt, and the bolt is threadedly connected to the cleaning brush 14. The cleaning brush 14 is composed of brush bristles and a fixed plate. The bolt is used to connect them so that the cleaning brush 14 can be replaced after the brush bristles of the cleaning brush 14 are worn.

[0025] Example 4: Reference Figure 1-5In another preferred embodiment of this utility model, based on embodiment 3, the transmission mechanism includes a first friction wheel 6, which is fixedly connected to the reciprocating threaded rod 8. A second friction wheel 17 abuts against the first friction wheel 6, and a rotating shaft 9 is fixedly connected to the second friction wheel 17. The rotating shaft 9 is rotatably connected to the housing 2 through a bearing. A second bevel gear 12 is fixedly connected to the rotating shaft 9, and a first bevel gear 11 meshes with the second bevel gear 12. The first bevel gear 11 is fixedly connected to the rotating shaft of the exhaust fan 10. When the exhaust fan 10 rotates, it drives the first bevel gear 11 to rotate, which in turn drives the second bevel gear 12 to rotate. The second bevel gear 12 then drives the rotating shaft 9 to rotate. Since the diameter of the first friction wheel 6 is larger than the diameter of the second friction wheel 17, when the exhaust fan 10 rotates, it will drive the first friction wheel 6 to decelerate, causing the reciprocating threaded rod 8 to rotate slowly. This allows the filter screen 5 to be automatically cleaned when the equipment is started, ensuring the ventilation effect in real time.

[0026] During cleaning: When the exhaust fan 10 is turned on, the first bevel gear 11 and the second bevel gear 12 work together to drive the second friction wheel 17 to rotate, which in turn drives the first friction wheel 6 to rotate. The first friction wheel 6 drives the reciprocating threaded rod 8 to rotate, which in turn drives the moving plate 15 to move, thereby causing the cleaning brush 14 to move and clean the filter screen 5.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ventilation device for an asphalt testing laboratory, comprising a housing (2), wherein an exhaust pipe (1) is connected to the upper end of the housing (2), and a filter screen (5) is fixedly connected to the lower end of the housing (2), characterized in that, The filter screen (5) is rotatably connected to a reciprocating threaded rod (8) via a bearing. The reciprocating threaded rod (8) is threaded through a movable plate (15). The movable plate (15) is positioned by a positioning mechanism. A cleaning brush (14) is fixedly connected to the movable plate (15). The cleaning brush (14) abuts against the filter screen (5). A housing (3) is connected to the movable plate (15) via a connecting mechanism. An exhaust fan (10) is connected to the reciprocating threaded rod (8) via a transmission mechanism. The exhaust fan (10) is installed inside the housing (2).

2. The ventilation equipment for an asphalt testing laboratory according to claim 1, characterized in that, The positioning mechanism includes a limiting rod (7), which is fixedly connected to the filter screen (5) and passes through the moving plate (15).

3. The ventilation equipment for an asphalt testing laboratory according to claim 1, characterized in that, The connecting mechanism includes a connecting block (4), which is fixedly connected to the box body (3). A T-shaped groove is provided in the connecting block (4), and a T-shaped block (16) is slidably arranged in the T-shaped groove. The T-shaped block (16) is fixedly connected to the moving plate (15).

4. The ventilation equipment for an asphalt testing laboratory according to claim 1, characterized in that, A connecting ear (13) is fixedly connected to the movable plate (15), and a bolt is threaded through the connecting ear (13) and threadedly connected to the cleaning brush (14).

5. A ventilation device for an asphalt testing laboratory according to claim 4, characterized in that, The bolts are rust-proof bolts.

6. A ventilation device for an asphalt testing chamber according to any one of claims 1-5, characterized in that, The transmission mechanism includes a first friction wheel (6), which is fixedly connected to the reciprocating threaded rod (8). A second friction wheel (17) abuts against the first friction wheel (6). A rotating shaft (9) is fixedly connected to the second friction wheel (17). The rotating shaft (9) is rotatably connected to the housing (2) through a bearing. A second bevel gear (12) is fixedly connected to the rotating shaft (9). A first bevel gear (11) meshes with the second bevel gear (12). The first bevel gear (11) is fixedly connected to the rotating shaft of the exhaust fan (10).

7. A ventilation device for an asphalt testing laboratory according to claim 6, characterized in that, The diameter of the first friction wheel (6) is larger than the diameter of the second friction wheel (17).

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