Filtering mechanism for gas detection

Abstract

The utility model relates to the technical field of gas filtering devices, and discloses a filtering mechanism for gas detection, which comprises a filtering box, and the left surface of the filtering box is movably connected with a moving plate. Through the arrangement of the moving plate, the cylinder, the central column, the driving rod and the connecting columns, when the driving motor operates, the double-thread lead screw starts to rotate, at the moment, the two moving blocks and the two connecting columns are driven by rotation of the double-thread lead screw and start to move in opposite directions under limiting of the limiting strips, the moving of the connecting columns drives the driving rod, and the driving rod is driven to move in opposite directions. When the filter screen is blocked, a driving rod starts to rotate with a central column as the axis, meanwhile, a cylinder is driven by rotation of the driving rod, the cylinder and a moving plate integrally start to move rightwards, finally, the blocked filter screen moves to the outside of the filter box, and the unblocked filter screen enters the inside of the filter box. Therefore, the problem that the whole filter box cannot filter dust normally when an operator replaces the filter screen is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas filter device technical field, more specifically, the utility model relates to a filter mechanism for gas detection. BACKGROUND

[0002] The mine refers to the independent production and operation unit of mining ore with a certain mining boundary, which is mainly responsible for providing the most basic ore raw materials for metallurgy, chemical industry and other industries in social production and life, in order to ensure the life safety of mining and other staff in the process of mine construction and mining, the safety inspection of mine construction environment needs to be carried out regularly during the mining period.

[0003] When the operator carries out gas detection work in mine safety inspection, the filter mechanism is often used to filter the dust existing in the gas, and the existing filter mechanism has the basic filtering function in the actual use, but the existing filter mechanism cannot normally filter the gas during the replacement of filter screen, which makes a part of dust in the gas enter the detection device through the filter mechanism, and affects the final result of gas detection, so it needs to be improved. UTILITY MODEL CONTENT

[0004] In order to overcome the defects of the prior art, the utility model provides a filter mechanism for gas detection, which has the advantages of replacing filter screen without affecting gas filtration.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a filter mechanism for gas detection, which comprises a filter box, the left surface of the filter box is movably connected with a moving plate, the right end of the moving plate penetrates through the filter box and extends to the right side of the filter box, the inner surface of the moving plate is movably connected with a mounting plate, the inner surface of the mounting plate is fixedly connected with a filter screen, the front and rear sides of the upper surface of the filter box are fixedly connected with a center column, the top end of the center column is hingedly connected with a driving rod, the inner surface of the right side of the driving rod is movably connected with a cylinder located on the right side of the filter box, the bottom end of the cylinder is fixedly connected with the upper surface of the moving plate, the front and rear ends of the left side of the upper surface of the filter box are fixedly connected with a fixed plate, the front surface of the fixed plate is fixedly connected with a driving motor, the other end of the output shaft of the driving motor is fixedly sleeved with a double thread screw rod, the rear end of the double thread screw rod penetrates through the fixed plate and extends to the rear side of the fixed plate, the outer surface of the double thread screw rod is threadedly sleeved with a moving block, the number of the moving blocks is two, the upper surfaces of the two moving blocks are fixedly connected with a connecting column, and the outer surface of the connecting column is movably connected with the inner surface of the left side of the driving rod.

[0006] As a preferred technical scheme of the utility model, the outer surfaces of the left and right sides of the two moving blocks are movably connected with limiting strips, and the lower surfaces of the limiting strips are fixedly connected with the upper surface of the filter box.

[0007] As a preferred technical scheme of the utility model, the outer surfaces of the left and right sides of the two moving blocks are movably connected with limiting strips, and the lower surfaces of the limiting strips are fixedly connected with the upper surface of the filter box.

[0008] As a preferred technical scheme of the utility model, the outer surfaces of the left and right sides of the two moving blocks are movably connected with limiting strips, and the lower surfaces of the limiting strips are fixedly connected with the upper surface of the filter box.

[0009] As a preferred technical scheme of the utility model, the outer surfaces of the left and right sides of the two moving blocks are movably connected with limiting strips, and the lower surfaces of the limiting strips are fixedly connected with the upper surface of the filter box.

[0010] As a preferred technical scheme of the utility model, the outer surfaces of the left and right sides of the two moving blocks are movably connected with limiting strips, and the lower surfaces of the limiting strips are fixedly connected with the upper surface of the filter box.

[0011] As a preferred technical scheme of the utility model, the outer surfaces of the left and right sides of the two moving blocks are movably connected with limiting strips, and the lower surfaces of the limiting strips are fixedly connected with the upper surface of the filter box.

[0012] Compared with the prior art, the utility model has the advantages of the following:

[0013] The utility model discloses a moving plate, a cylinder, a center column, a driving rod and a connecting column are arranged, when the driving motor operates, the double thread lead screw starts rotating, at the moment, two moving blocks and two connecting columns are driven by the rotation of the double thread lead screw and start moving oppositely under the limiting of the limiting strip, and the movement of the connecting column drives the driving rod to start rotating around the center column, at the same time, the cylinder is driven by the rotation of the driving rod, so that the cylinder and the moving plate start moving to the right as a whole, finally, the blocked filter screen moves to the outside of the filter box, and the unblocked filter screen enters the inside of the filter box, thereby solving the problem that the filter box as a whole cannot normally filter dust when the operator replaces the filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model.

[0015] Figure 2 It is the structure schematic view of bottom of the utility model;

[0016] Figure 3 It is the structure schematic view of side of the utility model;

[0017] Figure 4 It is the structure schematic view of moving plate of the utility model;

[0018] Figure 5 It is the structure schematic view of top of filter box of the utility model.

[0019] In the drawing: 1, filter box;2, moving plate;3, cylinder;4, center column;5, driving rod;6, fixed plate;7, driving motor;8, double thread screw;9, moving block;10, connecting column;11, mounting plate;12, filter screen;13, bolt;14, limit block;15, air inlet valve;16, pneumatic cylinder;17, toothed plate;18, gear;19, rotating shaft;20, cam;21, limit strip. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] As Figures 1 to 5As shown, the utility model provides a kind of filtering mechanism for gas detection, including filter box 1, the left surface of filter box 1 is movably connected with moving plate 2, the right end of moving plate 2 is through filter box 1 and extends to the right side of filter box 1, the inner surface of moving plate 2 is movably connected with mounting plate 11, the inner surface of mounting plate 11 is fixedly installed with filter screen 12, the front and rear sides of filter box 1 upper surface are all fixedly connected with center column 4, the top of center column 4 is hinged with driving rod 5, the inner surface of the right side of driving rod 5 is movably connected with the cylinder 3 located at the right side of filter box 1, the bottom end of cylinder 3 and the upper surface of moving plate 2 are fixedly connected, the front and rear ends of the left side of filter box 1 upper surface are all fixedly connected with fixed plate 6, the front surface of fixed plate 6 is fixedly installed with driving motor 7, the other end of driving motor 7 output shaft is fixedly sleeved with double thread screw rod 8, the rear end of double thread screw rod 8 is through fixed plate 6 and extends to the back of fixed plate 6, the outer surface of double thread screw rod 8 is threadedly sleeved with moving block 9, the number of moving block 9 is two, the upper surface of two moving blocks 9 is all fixedly connected with connecting column 10, the outer surface of connecting column 10 and the inner surface of the left side of driving rod 5 are movably connected;The operation of driving motor 7 will make double thread screw rod 8 start rotating, and two moving blocks 9 as a whole will move towards each other under the driving of double thread screw rod 8, at this time, the movement of connecting column 10 will drive driving rod 5, so that driving rod 5 starts to rotate around center column 4, and the inner surface of the right side of driving rod 5 will drive cylinder 3, so that cylinder 3 and moving plate 2 as a whole start to move right.

[0022] Wherein, the outer surface of the left and right sides of two moving blocks 9 is movably connected with limiting strip 21, the lower surface of limiting strip 21 and the upper surface of filter box 1 are fixedly connected;When double thread screw rod 8 starts to rotate, so that two moving blocks 9 as a whole start to move, the design of limiting strip 21 will make two moving blocks 9 can only move towards each other along the inner surface between two limiting strips 21, thereby realizing the limiting effect of the overall movement of two moving blocks 9.

[0023] Wherein, the front surface of mounting plate 11 movably sleeved with bolt 13, the rear end of bolt 13 is in turn through mounting plate 11 and moving plate 2 and extends to the back surface of moving plate 2, the outer surface of bolt 13 and the inner surface of moving plate 2 are threadedly sleeved;The design of bolt 13 plays the role of fixing mounting plate 11 and filter screen 12 in the inside of moving plate 2, if operator removes bolt 13, at this time, the fixing of mounting plate 11 as a whole is released, so that operator can directly remove mounting plate 11 as a whole.

[0024] The left and right sides of the upper and lower ends of the moving plate 2 are fixedly connected with four limiting blocks 14 located outside the filter box 1, the four limiting blocks 14 are of the same size; the design of the four limiting blocks 14 plays a limiting role on the left and right moving range of the moving plate 2, thereby avoiding the situation that the cylinder 3 directly impacts on the right surface of the filter box 1 under the rotation of the driving rod 5.

[0025] The outer surfaces of the front and rear sides of the filter box 1 are fixedly connected with air inlet valves 15, the other ends of the air inlet valves 15 penetrate through the filter box 1 and extend into the interior of the filter box 1, the number of the mounting plates 11 is two, and the two mounting plates 11 are of the same size; the design of the two mounting plates 11 enables the operator to move the filter screen 12 located outside the filter box 1 into the interior of the filter box 1 to replace the original filter screen 12 to filter the gas when the filter screen 12 located in the interior of the filter box 1 is blocked by dust.

[0026] The front side of the lower surface of the filter box 1 is fixedly provided with a pneumatic cylinder 16, the rear end of the pneumatic cylinder 16 is fixedly connected with a toothed plate 17, the outer surface of the toothed plate 17 is meshingly connected with a gear 18, the inner surface of the gear 18 is fixedly sleeved with a rotating shaft 19 located at the rear side of the moving plate 2, and the top end of the rotating shaft 19 penetrates through the filter box 1 and extends into the interior of the filter box 1; when the pneumatic cylinder 16 starts to operate, the toothed plate 17 starts to move backward, and the movement of the toothed plate 17 drives the gear 18, so that the gear 18 and the rotating shaft 19 start to rotate.

[0027] The outer surface of the rotating shaft 19 is fixedly sleeved with a cam 20 located in the interior of the filter box 1, and the front side of the outer surface of the cam 20 is movably connected with the rear surface of the moving plate 2; the rotation of the rotating shaft 19 drives the cam 20, so that the cam 20 also starts to rotate, and at this moment, the outer surface of the cam 20 periodically knocks and oscillates the whole moving plate 2, so that a part of dust adhered to the outer surface of the filter screen 12 falls off under the influence of the knocking and oscillation.

[0028] The working principle and use process of the utility model:

[0029] Firstly, the operator connects the two air inlet valves 15 with the detection device and the pipeline for inputting the detection gas respectively, then the operator starts the air cylinder 16 and opens the air inlet valve 15, the operation of the air cylinder 16 makes the tooth plate 17 start to move forward and backward, the gear 18, the rotating shaft 19 and the cam 20 are driven by the tooth plate 17 to start the periodic knocking vibration of the whole moving plate 2, and with the opening of the air inlet valve 15, the detection gas passes through the filter screen 12 and finally moves into the detection device, in this process, the dust mixed in the detection gas is blocked by the filter screen 12 and adheres to the outer surface of the filter screen 12, so that the dust enters the detection device.

[0030] When the operator needs to replace the filter screen 12, the operator starts the driving motor 7, at this time the double thread screw rod 8 starts to rotate, the rotation of the double thread screw rod 8 drives the two moving blocks 9 to start to move towards each other under the limiting of the limiting strip 21, at the same time, the movement of the connecting column 10 drives the driving rod 5 to start to rotate around the center column 4, at this time the cylinder 3 and the moving plate 2 start to move to the right under the rotation of the driving rod 5, and finally the filter screen 12 blocked by the dust moves to the outside of the filter box 1, and the unblocked filter screen 12 enters the inside of the filter box 1 and replaces the blocked filter screen 12 to filter the dust.

[0031] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A filtering mechanism for gas detection comprising a filtering box (1), characterized in that: The left surface of the filter box (1) is movably connected with a moving plate (2), the right end of the moving plate (2) penetrates through the filter box (1) and extends to the right side of the filter box (1), the inner surface of the moving plate (2) is movably connected with a mounting plate (11), the inner surface of the mounting plate (11) is fixedly connected with a filter screen (12), the front and rear sides of the upper surface of the filter box (1) are fixedly connected with a center column (4), the top end of the center column (4) is hingedly connected with a driving rod (5), the inner surface of the right side of the driving rod (5) is movably connected with a cylinder (3) located on the right side of the filter box (1), the bottom end of the cylinder (3) is fixedly connected with the upper surface of the moving plate (2), the front and rear ends of the left side of the upper surface of the filter box (1) are fixedly connected with a fixed plate (6), the front surface of the fixed plate (6) is fixedly connected with a driving motor (7), the other end of the output shaft of the driving motor (7) is fixedly sleeved with a double thread lead screw (8), the rear end of the double thread lead screw (8) penetrates through the fixed plate (6) and extends to the rear side of the fixed plate (6), the outer surface of the double thread lead screw (8) is threadedly sleeved with a moving block (9), the number of the moving block (9) is two, the upper surfaces of the two moving blocks (9) are fixedly connected with a connecting column (10), and the outer surface of the connecting column (10) is movably connected with the inner surface of the left side of the driving rod (5).

2. A filtering mechanism for gas detection as claimed in claim 1, wherein: The outer surfaces of the left and right sides of the two moving blocks (9) are movably connected with a limiting strip (21), and the lower surface of the limiting strip (21) is fixedly connected with the upper surface of the filter box (1).

3. The filtering mechanism for gas detection according to claim 1, wherein: The front surface of the mounting plate (11) is movably sleeved with a bolt (13), the rear end of the bolt (13) penetrates through the mounting plate (11) and the moving plate (2) in sequence and extends to the rear surface of the moving plate (2), and the outer surface of the bolt (13) is threadedly sleeved with the inner surface of the moving plate (2).

4. The filtering mechanism for gas detection according to claim 1, wherein: The left and right sides of the upper and lower ends of the moving plate (2) are fixedly connected with limiting blocks (14) located outside the filter box (1), the number of the limiting blocks (14) is four, and the limiting blocks (14) are the same in size.

5. The filtering mechanism for gas detection according to claim 1, wherein: The outer surfaces of the front and rear sides of the filter box (1) are fixedly connected with air inlet valves (15), the other ends of the air inlet valves (15) penetrate through the filter box (1) and extend to the inside of the filter box (1), the number of the mounting plates (11) is two, and the mounting plates (11) are the same in size.

6. The filtering mechanism for gas detection according to claim 1, wherein: The front side of the lower surface of the filter box (1) is fixedly connected with a pneumatic cylinder (16), the rear end of the pneumatic cylinder (16) is fixedly connected with a toothed plate (17), the outer surface of the toothed plate (17) is meshingly connected with a gear (18), the inner surface of the gear (18) is fixedly sleeved with a rotating shaft (19) located on the rear side of the moving plate (2), and the top end of the rotating shaft (19) penetrates through the filter box (1) and extends to the inside of the filter box (1).

7. A filter mechanism for gas detection according to claim 6, wherein: The outer surface of the rotating shaft (19) is fixedly sleeved with a cam (20) located inside the filter box (1), and the front side of the outer surface of the cam (20) is movably connected with the rear surface of the moving plate (2).

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