Waste gas purification unit for air jet loom

Abstract

The invention discloses a waste gas purification unit for an air jet loom in the technical field of waste gas treatment. The waste gas purification unit comprises a box body, and a first filtering mechanism and a second filtering mechanism are arranged in the box body; a first cleaning mechanism is arranged on the first filtering mechanism, and a second cleaning mechanism is arranged on the second filtering mechanism; a driving mechanism is arranged on the box body; the first filtering mechanism is used for filtering out fluff in the waste gas; the second filtering mechanism is used for filtering out small dust particles in the waste gas passing through the first filtering mechanism; the first cleaning mechanism is used for cleaning fluff stuck on the first filtering mechanism; the second cleaning mechanism is used for cleaning small dust particles attached to the second filtering mechanism; the driving mechanism is used for driving the first cleaning mechanism and the second cleaning mechanism to operate; the device can automatically clean the filtered fluff and dust, and can effectively promote the waste gas treatment efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, in particular to a waste gas purification unit for an air jet loom. Background Art

[0002] The air jet loom is a shuttleless loom that uses a jet airflow to pull the weft yarn through the shed. Exhaust gas is generated when the air jet loom is working. The existing method for treating solid matter in the exhaust gas is usually to filter it with a filter.

[0003] In addition to dust and other small solid particles, the exhaust gas from the loom also contains a large amount of fluff. Because the fluff is usually soft and filamentous, it is fluffy when piled up and covers a large area. Combined with the dust, it can completely block the filter in a short period of time. At the same time, the fluff will get stuck in the mesh of the filter, making it difficult to clean. Summary of the invention

[0004] The object of the present invention is to provide an exhaust gas purification unit for an air jet loom to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an exhaust gas purification unit for an air jet loom, comprising a box body, wherein a first filter mechanism and a second filter mechanism are provided in the box body;

[0006] The first filtering mechanism is provided with a first cleaning mechanism and the second filtering mechanism is provided with a second cleaning mechanism; the box body is provided with a driving mechanism;

[0007] The first filtering mechanism is used to filter out fluff in the exhaust gas;

[0008] The second filtering mechanism is used to filter out small dust particles in the exhaust gas after passing through the first filtering mechanism;

[0009] The first cleaning mechanism is used to clean the fluff stuck on the first filtering mechanism;

[0010] The second cleaning mechanism is used to clean small dust particles attached to the second filtering mechanism;

[0011] The driving mechanism is used to drive the first cleaning mechanism and the second cleaning mechanism to operate.

[0012] Preferably, the first filtering mechanism comprises two fixed frames, the two fixed frames are distributed in the box body and both fixed frames are fixedly connected to the box body; a plurality of filter rods are arranged in the fixed frame, the width of the filter rods and the distance between two adjacent filter rods are 0.1 to 0.2 cm; and the plurality of filter rods are fixedly connected to the fixed frame.

[0013] Preferably, the fixed frames and filter rods on the front and rear sides are vertically distributed and the rear fixed frame and filter rod are horizontally distributed; the filter rod is wavy and bends back and forth; the bottom part of the front filter rod and the right part of the rear filter rod are both right-angled and extend backward.

[0014] The unclamping device of claim 1, wherein the two guide wheels are connected along the front side of the filter housing, and the guide wheels are connected along the front side of the filter housing, wherein the two guide wheels are connected along the front side of the filter housing, and the guide wheels are connected along the front side of the filter housing, wherein the two guide wheels are connected along the front side of the filter housing, and the guide wheels are connected along the

[0015] Preferably, the middle portion of the front end of the limiting rod is in the shape of a sharp angle protruding forward, and the width of the limiting rod is greater than the diameter of the reciprocating screw rod.

[0016] The cam is an elastic member formed between a pair of camming arms and a pair of locking members, the two members being arranged on a track and being arranged on a track with the second end being fixedly secured to the side panels and the other end being secured to the side panels with the second end being securedly secured to the side panels.

[0017] Preferably, the second filtering mechanism comprises a filter plate, the filter plate is slidably matched with the inner wall of the box, and the four corner positions of the front end of the filter plate are fixedly connected with sliding rods, and the sliding rods penetrate the two fixed frames and are slidably connected to the two fixed frames.

[0018] Preferably, the second cleaning mechanism includes two third sliding frames, which are symmetrically distributed on the left and right sides of the filter plate and are both slidably connected to the filter plate; a plurality of brushes are fixedly connected to the third sliding frame, and the plurality of brushes are all in contact with the front surface of the filter plate; a connecting rod is rotatably connected to the third sliding frame, and the other ends of the connecting rods on the left and right sides are respectively rotatably connected to the left and right side parts of the box.

[0019] Preferably, the driving mechanism includes a motor, which is located at the right side of the box and is fixedly connected to the box; the motor output shaft is fixedly connected to the rear reciprocating screw; the left end of the reciprocating screw at the rear side is fixedly connected to the first bevel gear, and the upper side of the first bevel gear is meshed with the second bevel gear, the upper end of the second bevel gear is fixedly connected to the first pulley, and the second bevel gear and the first pulley are both rotatably connected to the box; the upper end of the reciprocating screw at the front side is fixedly connected to the second pulley, and the second pulley is meshed with a belt and the belt is meshed with the first pulley at the same time; driving rods are provided at both ends of the second sliding frame, and the second sliding frame is slidably connected to the driving rods located at both ends thereof; the four sliding rods are fixedly connected to the driving rods on the front and rear sides.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention allows the exhaust gas to pass through the first filter mechanism and the second filter mechanism in sequence when the exhaust gas is passed into the box; when the exhaust gas passes through the first filter mechanism, the fluff mixed inside the exhaust gas will be filtered out by the first filter mechanism, and the fluff will be stuck on the surface of the first filter mechanism; when the exhaust gas passes through the second filter mechanism, the dust mixed inside the exhaust gas will be filtered out by the second filter mechanism, and the filtered dust will adhere to the surface of the second filter mechanism; the first cleaning mechanism and the second cleaning mechanism are driven to operate by starting the driving mechanism, the first cleaning mechanism will continuously clean the fluff stuck on the first cleaning mechanism, and the second cleaning mechanism will continuously clean the dust attached to the second filter mechanism; under the action of the first cleaning mechanism and the second cleaning mechanism, it can be ensured that the first cleaning mechanism and the second cleaning mechanism will not be blocked, and the exhaust gas generated by the loom can be continuously treated.

[0022] 2. The filter rod of the present invention is in a wave shape that bends forward and backward, so that the intercepted fluff can be concentrated on the backward bending part of the filter rod, thereby effectively avoiding clogging of the box in a short time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2It is a rear view structural schematic diagram of the present invention;

[0025] Figure 3 It is a cross-sectional structural schematic diagram of the present invention;

[0026] Figure 4 It is a schematic diagram of the split structure of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the filter rod in the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the filter rod in the present invention from a second viewing angle;

[0029] Figure 7 It is a structural schematic diagram of the first cleaning mechanism in the present invention;

[0030] Figure 8 for Figure 7 A is a schematic diagram of the enlarged structure of the middle part;

[0031] Fig. 9 It is a structural schematic diagram of the second cleaning mechanism in the present invention.

[0032] In the accompanying drawings: 1, box body; 2, fixed frame; 3, filter rod; 4, reciprocating screw rod; 5, first sliding frame; 6, limit rod; 7, second sliding frame; 8, cleaning rod; 9, first spring; 10, fixed rod; 11, block; 12, sliding block; 13, second spring; 14, first push block; 15, rotating rod; 16, second push block; 17, filter plate; 18, sliding rod; 19, third sliding frame; 20, brush; 21, connecting rod; 22, motor; 23, first bevel gear; 24, second bevel gear; 25, first pulley; 26, second pulley; 27, belt; 28, driving rod. DETAILED DESCRIPTION

[0033] See also Figure 1-Figure 9 , the present invention provides a technical solution: an exhaust gas purification unit for an air jet loom, comprising a box body 1, in which a first filter mechanism and a second filter mechanism are arranged;

[0034] The first filter mechanism is provided with a first cleaning mechanism and the second filter mechanism is provided with a second cleaning mechanism; the box body 1 is provided with a driving mechanism;

[0035] The first filtering mechanism is used to filter out fluff in the exhaust gas;

[0036] The second filter mechanism is used to filter out small dust particles in the exhaust gas after passing through the first filter mechanism;

[0037] The first cleaning mechanism is used to clean the fluff stuck on the first filtering mechanism;

[0038] The second cleaning mechanism is used to clean small dust particles attached to the second filtering mechanism;

[0039] The driving mechanism is used to drive the first cleaning mechanism and the second cleaning mechanism to operate;

[0040] During operation, since the exhaust gas from the loom contains a large amount of fluff and dust, when the exhaust gas is passed into the box 1, the exhaust gas will pass through the first filtering mechanism and the second filtering mechanism in sequence; when the exhaust gas passes through the first filtering mechanism, the mixed fluff inside it will be filtered out by the first filtering mechanism, and the fluff will be stuck on the surface of the first filtering mechanism; when the exhaust gas passes through the second filtering mechanism, the mixed dust inside it will be filtered out by the second filtering mechanism, and the filtered dust will adhere to the surface of the second filtering mechanism; by starting the driving mechanism to drive the first cleaning mechanism and the second cleaning mechanism to operate, the first cleaning mechanism will continuously clean the fluff stuck on the first cleaning mechanism, and the second cleaning mechanism will continuously clean the dust attached to the second filtering mechanism; under the action of the first cleaning mechanism and the second cleaning mechanism, it can be ensured that the first cleaning mechanism and the second cleaning mechanism will not be blocked, and can continuously treat the exhaust gas generated by the loom.

[0041] like Figure 5-6 As shown, as a further solution of the present invention, the first filtering mechanism includes two fixed frames 2, the two fixed frames 2 are distributed in the box body 1 and the two fixed frames 2 are fixedly connected to the box body 1; a plurality of filter rods 3 are arranged in the fixed frame 2, the width of the filter rod 3 and the distance between two adjacent filter rods 3 are 0.1 to 0.2 cm; the plurality of filter rods 3 are fixedly connected to the fixed frame 2;

[0042] The front and rear fixing frames 2 and the filter rods 3 are arranged vertically, and the rear fixing frame 2 and the filter rods 3 are arranged horizontally; the filter rods 3 are in a wave shape that bends back and forth; the bottom part of the front filter rod 3 and the right part of the rear filter rod 3 are both in a right angle shape that extends backwards;

[0043] During operation, when the exhaust gas passes through the front and rear fixed frames 2, since the fluff in the exhaust gas is mostly filamentous, the fluff in the horizontal state will be blocked by the multiple filter rods 3 vertically distributed on the front side, while the fluff in the vertical state may pass through the gaps in the vertical filter rods 3 and cross the front fixed frame 2. At this time, the fluff passing through can be blocked by the multiple filter rods 3 horizontally distributed on the rear side; since the fluff is relatively fine and soft, it will be stuck on the filter rod 3 and in the gap between two adjacent filter rods 3 after being blocked by the filter rod 3. At the same time, the fluff is relatively fluffy and can block the gap of the filter rod 3 in a short time; by making the filter rod 3 into a wave shape that bends forward and backward, the blocked fluff can be concentrated on the backward bending part of the filter rod 3, thereby effectively preventing the box body 1 from being blocked in a short time; when in use, multiple filter rods 3 can be set according to the amount of exhaust gas.

[0044] like Figure 3 , Figure 7-8 As shown, as a further solution of the present invention, the first cleaning mechanism includes two reciprocating screws 4, which are respectively distributed in front of the front and rear fixed frames 2 and the reciprocating screws 4 on the front and rear sides are respectively relatively parallel to the filter rods 3 on the front and rear sides; the reciprocating screws 4 are rotatably connected to the box body 1 and the first sliding frame 5 is threadedly connected to the reciprocating screw 4, a limiting rod 6 is provided in front of the first sliding frame 5, the limiting rod 6 is fixedly connected to the box body 1 and the first sliding frame 5 is slidably connected to the limiting rod 6; the first sliding frame 5 is slidably connected to the second sliding frame 7, A plurality of cleaning rods 8 are fixedly connected to the second sliding frame 7, and the plurality of cleaning rods 8 are respectively located in the gaps between all two adjacent filter rods 3, and the cleaning rods 8 and the two adjacent filter rods 3 are in contact with each other; two first springs 9 are fixedly connected to the second sliding frame 7, and the other ends of the two first springs 9 are fixedly connected to the first sliding frame 5; a separation mechanism is provided on the second sliding frame 7, and the separation mechanism is used to drive the cleaning rod 8 to separate from the filter rod 3 when the cleaning rod 8 moves to the end position of the filter rod 3, and automatically reset when the cleaning rod 8 moves to the initial end position of the filter rod 3;

[0045] The middle part of the front end of the limiting rod 6 is in a sharp angle shape protruding forward, and the width of the limiting rod 6 is greater than the diameter of the reciprocating screw rod 4;

[0046] The separation mechanism includes two fixed rods 10, which are distributed on both sides of the reciprocating screw rod 4 and are fixedly connected to the first sliding frame 5; the fixed rod 10 is slidably connected to the second sliding frame 7 and a block 11 is slidably connected to the front position of the fixed rod 10, the block 11 is engaged with the second sliding frame 7 and the other end of the block 11 is fixedly connected to a sliding block 12, the sliding block 12 is fixedly connected to a second spring 13, and the other end of the second spring 13 is fixedly connected to the fixed rod 10; the sliding block 12 is slidably connected to the fixed rod 10, and the front sliding block 12 is positively connected to the fixed rod 10. The first push block 14 is fixedly connected to the upper position and the left position of the rear sliding block 12, and the first push block 14 is fixedly connected to the box body 1; the second sliding frame 7 is symmetrically rotatably connected to the rotating rod 15 at the positions on both sides of the reciprocating screw rod 4, and a torsion spring is provided at the connection between the rotating rod 15 and the second sliding frame 7; the front rotating rod 15 is inclined with the upper end at the front and the lower end at the rear; the rear rotating rod 15 is inclined with the left end at the front and the rear end at the rear; the second push block 16 is provided at the lower position of the front rotating rod 15 and the right position of the rear rotating rod 15, and the second push block 16 is fixedly connected to the box body 1;

[0047] When the cleaning rod 8 is moved downward to the bottom position of the filter rod 3, the first sliding frame 5 drives the second sliding frame 7 to move downward, and the second sliding frame 7 drives all the cleaning rods 8 to move downward, and the cleaning rods 8 will push the fluff stuck on the filter rod 3 downward. When the fluff is pushed to the bottom position of the filter rod 3, the fluff will be separated from the filter rod 3 and because the cleaning rod 8 cleans the fluff, the fluff will accumulate together. The accumulated fluff has the weight of moving and will automatically fall down after being separated from the filter rod 3; when the cleaning rod 8 moves downward to the bottom position of the filter rod 3, the rotating rod 15 on the second sliding frame 7 contacts the second pushing block 16 at the lower position. As the second sliding frame 7 continues to move downward, the rotating rod 15 starts to push the second sliding frame 7 forward under the action of the second pushing block 16; when the first sliding frame 5 drives the second sliding frame 7 to move to the bottom When the first sliding frame 5 and the second sliding frame 7 move to the uppermost position, the sliding block 12 will be squeezed downward by the first pushing block 14, and the sliding block 12 will drive the blocking block 11 to move downward, and the blocking block 11 will be separated from the second sliding frame 7 when it moves downward. At this time, the second sliding frame 7 is automatically reset under the action of the first spring 9, and the cleaning rod 8 is inserted into the gap at the upper end position of the filter rod 3 again.

[0048] like Figure 2-3 As shown, as a further solution of the present invention, the second filtering mechanism includes a filter plate 17, the filter plate 17 is slidably matched with the inner wall of the box body 1, and the four corner positions of the front end of the filter plate 17 are fixedly connected with sliding rods 18, and the sliding rods 18 penetrate the two fixed frames 2 and are slidably connected to the two fixed frames 2;

[0049] During operation, dust and other small solid particles in the exhaust gas of the loom can be filtered out through the filter plate 17 , and the filtered dust and other small solid particles will adhere to the filter plate 17 .

[0050] like Fig. 9As shown, as a further solution of the present invention, the second cleaning mechanism includes two third sliding frames 19, which are symmetrically distributed on the left and right sides of the filter plate 17 and are both slidably connected to the filter plate 17; a plurality of brushes 20 are fixedly connected to the third sliding frame 19, and the plurality of brushes 20 are all in contact with the front surface of the filter plate 17; a connecting rod 21 is rotatably connected to the third sliding frame 19, and the other ends of the connecting rods 21 on the left and right sides are rotatably connected to the left and right side parts of the box body 1 respectively;

[0051] During operation, by driving the filter plate 17 to slide back and forth, the filter plate 17 will push the two third sliding frames 19 to move back and forth; under the action of the connecting rod 21, the third sliding frame 19 will be pushed by the connecting rod 21 in the direction of approaching the other third sliding frame 19 when moving forward, and will be pulled by the connecting rod 21 in the direction away from the other third sliding frame 19 when moving backward; when the third sliding frame 19 continuously moves back and forth on the surface of the filter plate 17, it will drive multiple brushes 20 to move back and forth on the filter plate 17, and when the multiple brushes 20 continuously move back and forth, they will continuously clean the dust attached to the filter plate 17.

[0052] like Figure 1-2 , Figure 5 As shown, as a further solution of the present invention, the driving mechanism includes a motor 22, which is located at the right side of the box body 1 and is fixedly connected to the box body 1; the output shaft of the motor 22 is fixedly connected to the rear reciprocating screw rod 4; the left end of the rear reciprocating screw rod 4 is fixedly connected to a first bevel gear 23, and a second bevel gear 24 is meshed at the upper side of the first bevel gear 23, and a first pulley 25 is fixedly connected to the upper end of the second bevel gear 24, and the second bevel gear 24 and the first pulley 25 are both rotatably connected to the box body 1; the upper end of the front reciprocating screw rod 4 is fixedly connected to a second pulley 26, and a belt 27 is meshed on the second pulley 26, and the belt 27 is simultaneously meshed with the first pulley 25; driving rods 28 are provided at both ends of the second sliding frame 7, and the second sliding frame 7 is simultaneously slidably connected to the driving rods 28 located at its two ends; the four sliding rods 18 are fixedly connected to the driving rods 28 on the front and rear sides;

[0053] During operation, the reciprocating screw rod 4 on the rear side is driven to rotate by starting the motor 22, and the reciprocating screw rod 4 on the rear side drives the first bevel gear 23 to rotate, and the first bevel gear 23 drives the first pulley 25 to rotate through the second bevel gear 24, and the first pulley 25 drives the second pulley 26 to rotate through the belt 27, and the second pulley 26 drives the reciprocating screw rod 4 on the front side to rotate, thereby achieving the effect of synchronous rotation of the reciprocating screw rods 4 on the front and rear sides; because the filter rod 3 is a wave-shaped wave that bends forward and backward, the third sliding frame 19 will be attached to the surface of the filter rod 3 under the action of the first spring 9, so the third sliding frame 19 will continuously move forward and backward when moving, and when the third sliding frame 19 moves forward and backward, it will drive the driving rods 28 at both ends thereof to move forward and backward; the driving rods 28 on the front and rear sides will drive the filter plate 17 to move forward and backward through the four sliding rods 18.

Claims

1. An exhaust gas purification unit for an air jet loom, comprising a housing (1), characterized in that: The box (1) is provided with a first filtering mechanism and a second filtering mechanism; the first filtering mechanism is provided with a first cleaning mechanism and the second filtering mechanism is provided with a second cleaning mechanism; the box is provided with a driving mechanism; The first filtering mechanism is used to filter out fluff in the exhaust gas; The second filtering mechanism is used to filter out small dust particles in the exhaust gas after passing through the first filtering mechanism; The first cleaning mechanism is used to clean the fluff stuck on the first filtering mechanism; The second cleaning mechanism is used to clean small dust particles attached to the second filtering mechanism; The driving mechanism is used to drive the first cleaning mechanism and the second cleaning mechanism to operate.

2. The exhaust gas purification unit for an air jet loom according to claim 1, characterized in that: The first filtering mechanism comprises two fixed frames (2), the two fixed frames (2) are distributed in the box body (1) and the two fixed frames (2) are fixedly connected to the box body (1); a plurality of filter rods (3) are arranged in the fixed frame (2), the width of the filter rods (3) and the distance between two adjacent filter rods (3) are 0.1 to 0.2 centimeters; and the plurality of filter rods (3) are fixedly connected to the fixed frame (2).

3. The exhaust gas purification unit for an air jet loom according to claim 2, characterized in that: The fixing frames (2) and the filter rods (3) on the front and rear sides are arranged vertically, and the fixing frame (2) and the filter rods (3) on the rear side are arranged horizontally; the filter rods (3) are in a wave shape that bends back and forth; the bottom part of the front filter rod (3) and the right part of the rear filter rod (3) are both in a right angle shape that extends backwards.

4. The exhaust gas purification unit for an air jet loom according to claim 2, characterized in that: The first cleaning mechanism comprises two reciprocating screw rods (4), which are respectively distributed in front of the front and rear fixed frames (2), and the reciprocating screw rods (4) on the front and rear sides are respectively relatively parallel to the filter rods (3) on the front and rear sides; the reciprocating screw rods (4) are rotatably connected to the box body (1), and a first sliding frame (5) is threadedly connected to the reciprocating screw rods (4); a limiting rod (6) is provided in front of the first sliding frame (5), the limiting rod (6) is fixedly connected to the box body (1), and the first sliding frame (5) is slidably connected to the limiting rod (6); a second sliding frame (7) is slidably connected to the first sliding frame (5), and the second sliding frame (7) ) is fixedly connected to a plurality of cleaning rods (8), the plurality of cleaning rods (8) are respectively located in the gaps between all two adjacent filter rods (3) and the cleaning rods (8) and the two adjacent filter rods (3) are in contact with each other; the second sliding frame (7) is fixedly connected to two first springs (9), the other ends of the two first springs (9) are fixedly connected to the first sliding frame (5); the second sliding frame (7) is provided with a separation mechanism, the separation mechanism is used to drive the cleaning rod (8) to separate from the filter rod (3) when the cleaning rod (8) moves to the end position of the filter rod (3) and automatically reset when the cleaning rod (8) moves to the initial end position of the filter rod (3).

5. The exhaust gas purification unit for an air jet loom according to claim 4, characterized in that: The middle part of the front end of the limiting rod (6) is in the shape of a sharp angle protruding forward, and the width of the limiting rod (6) is greater than the diameter of the reciprocating screw rod (4).

6. The exhaust gas purification unit for an air jet loom according to claim 4, characterized in that: The separation mechanism comprises two fixed rods (10), the two fixed rods (10) are distributed on both sides of the reciprocating screw rod (4) and the two fixed rods (10) are fixedly connected to the first sliding frame (5); the fixed rod (10) is slidably connected to the second sliding frame (7) and a clamping block (11) is slidably connected to the front side of the fixed rod (10), the clamping block (11) is engaged with the second sliding frame (7) and the other end of the clamping block (11) is fixedly connected to a sliding block (12), the sliding block (12) is fixedly connected to a second spring (13), and the other end of the second spring (13) is fixedly connected to the fixed rod (10); the sliding block (12) is slidably connected to the fixed rod (10), and the sliding block on the front side A first push block (14) is fixedly connected to the upper position of the rear sliding block (12) and the left position of the rear sliding block (12), and the first push block (14) is fixedly connected to the box body (1); a rotating rod (15) is symmetrically rotatably connected to the second sliding frame (7) at the positions on both sides of the reciprocating screw rod (4), and a torsion spring is provided at the connection between the rotating rod (15) and the second sliding frame (7); the rotating rod (15) on the front side is in an inclined shape with the upper end at the front and the lower end at the rear; the rotating rod (15) on the rear side is in an inclined shape with the left end at the front and the rear end at the rear; a second push block (16) is provided at the lower position of the front rotating rod (15) and the right position of the rear rotating rod (15), and the second push block (16) is fixedly connected to the box body (1).

7. The exhaust gas purification unit for an air jet loom according to claim 4, characterized in that: The second filtering mechanism comprises a filter plate (17), the filter plate (17) is slidably matched with the inner wall of the box body (1), and the four corner positions of the front end of the filter plate (17) are fixedly connected with sliding rods (18), and the sliding rods (18) pass through the two fixed frames (2) and are slidably connected to the two fixed frames (2).

8. The exhaust gas purification unit for an air jet loom according to claim 7, characterized in that: The second cleaning mechanism comprises two third sliding frames (19), the two third sliding frames (19) are symmetrically distributed on the left and right sides of the filter plate (17) and the two third sliding frames (19) are both slidably connected to the filter plate (17); a plurality of brushes (20) are fixedly connected to the third sliding frames (19), and the plurality of brushes (20) are all in contact with the front surface of the filter plate (17); a connecting rod (21) is rotatably connected to the third sliding frame (19), and the other ends of the connecting rods (21) on the left and right sides are respectively rotatably connected to the left and right side parts of the box body (1).

9. The exhaust gas purification unit for an air jet loom according to claim 7, characterized in that: The driving mechanism comprises a motor (22), the motor (22) is located at the right side of the housing (1) and is fixedly connected to the housing (1); the output shaft of the motor (22) is fixedly connected to the rear reciprocating screw (4); the left end of the rear reciprocating screw (4) is fixedly connected to a first bevel gear (23), the upper side of the first bevel gear (23) is meshed with a second bevel gear (24), the upper end of the second bevel gear (24) is fixedly connected to a first pulley (25), and the second bevel gear (24) and the first pulley are connected to each other. The pulleys (25) are all rotatably connected to the box body (1); the upper end of the reciprocating screw rod (4) on the front side is fixedly connected to a second pulley (26), a belt (27) is meshed on the second pulley (26), and the belt (27) is also meshed with the first pulley (25); driving rods (28) are provided at both ends of the second sliding frame (7), and the second sliding frame (7) is slidably connected to the driving rods (28) located at both ends thereof; the four sliding rods (18) are all fixedly connected to the driving rods (28) on the front and rear sides.

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