Rubber slitting tool

Abstract

The utility model discloses a rubber slitting tool, which belongs to the field of rubber processing devices, and comprises a base, upright posts are arranged at four corners of the bottom end of the base, a groove is formed in the top end of the base, a conveying belt is arranged in the groove, a plurality of barrier strips distributed in a linear array are arranged on the conveying belt, a support frame is fixedly mounted at the top end of the base, and the support frame is fixedly mounted on the base. A positioning assembly is arranged on the side, away from the groove, of the base, a fixing assembly is arranged in the supporting frame, a mounting groove is formed in the bottom end of the base, a moving groove is formed in the top end of the base and communicates with the mounting groove, a supporting box is fixedly mounted on the inner wall of the top end of the mounting groove, and a supporting block is arranged in the supporting box. Through the arrangement of the positioning assembly and the cooperation of the infrared distance measuring instrument and the distance measuring plate, the length of a section needing to be cut is accurately measured and determined, the positioning plate can play a role in positioning, and the cutting accuracy of equipment can be kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to rubber processing device field, more specifically, relate to a rubber slitting frock. BACKGROUND

[0002] Rubber is a kind of polymer material by a variety of high molecular organic compounds polymerization, with high elasticity, wear resistance and waterproof property, can better satisfy the diversity of working environment, commonly used to make various connecting parts or sealing parts.Rubber ring is the annular component with circular structure, often used in pipe connection and bearing, can also be set in the outside of other components, so rubber ring is made of rubber, the production of rubber is generally made into a whole, so the production process of rubber ring needs to cut the whole rubber stick made into a certain length to meet the next process use.

[0003] The patent with application number 202022900037.3 discloses a kind of rubber slitting device, it is related to rubber device technical field, the device includes bearing frame, cutting table installed between conveying belt, power mechanism is installed in the upper of bearing frame, and cutting knife is connected with power mechanism and can reciprocate along the vertical direction of bearing frame, cutting knife is located in the upper of cutting table.The utility model bearing frame is configured to support power mechanism and cutting knife, ordinary support frame can be used, the upper of bearing frame is connected with power mechanism, power mechanism is connected with cutting knife, when using, power mechanism provides power for cutting knife, cutting knife reciprocates along the vertical direction of bearing frame to cut rubber, convenient operation.

[0004] For the above related technology, cutting knife is reciprocated along the vertical direction of bearing frame to cut rubber by power mechanism providing power for cutting knife, convenient operation, the equipment is not provided with positioning structure, manual adjustment cutting length can be needed, in turn, the precision of length to be cut is not accurate, and different length products are inconvenient to cut. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a kind of rubber slitting frock, adopt following technical scheme:

[0006] The utility model provides a rubber slitting tool, including the base, four corners of bottom end of the base are equipped with stand, the top of the base is equipped with the recess, be equipped with the conveyer belt in the recess, be equipped with a plurality of straight line array distribution's fender on the conveyer belt, the top of the base is fixedly installed with the support frame, the side of the base away from the recess is equipped with the positioning assembly, be equipped with the fixed assembly in the support frame, the bottom of the base is equipped with the installation groove, the top of the base is equipped with the movement groove, the installation groove is communicated with the movement groove, the top inwall of installation groove is fixedly installed with the support box, be equipped with the support block in the support box, the top of support block is equipped with cutting assembly, be equipped with the drive assembly between support block and support box, the dust collection assembly is equipped below the base.

[0007] Through the above technical scheme, the conveying belt is separated into multiple placing areas by the cooperation of multiple fenders, which facilitates the workers to place the rubber strips, helps to avoid the winding phenomenon of the rubber strips during conveying, is conducive to maintaining the stability of the rubber strip conveying, and facilitates the equipment to cut multiple rubber strips simultaneously at a time, the workers place the rubber strips on the conveying belt, and the frame in the prior art is placed on the side of the base away from the recess, which can collect the cut products, the length of the rubber to be cut is determined by the positioning assembly, and then the rubber strip is conveyed to the support frame by the conveying belt, the rubber strip contacts the positioning assembly, which can position the rubber strip, which is conducive to maintaining the accuracy of the rubber strip cutting, and facilitates cutting products of different lengths, when the rubber strip is positioned, the rubber strip is pressed and fixed by the fixed assembly, which is conducive to maintaining the stability of the rubber strip cutting, when the rubber strip is fixed, the cutting assembly is driven by the drive assembly to move in the movement groove, which can cut the products, when the equipment cuts the rubber strip, waste may be generated, which can be collected by the dust collection assembly, when the product cutting is completed, the positioning assembly is moved, and then the cut products are moved under the pushing of the subsequent rubber strip, the cut products fall into the frame in the prior art under the action of gravity, and then the above operation is repeated.

[0008] Further, the positioning assembly includes a positioning plate arranged on the side of the base away from the recess, two receiving grooves are arranged on the side of the base close to the positioning plate, two second air cylinders are arranged in the receiving grooves, the piston shafts of the second air cylinders are fixedly connected to the side of the positioning plate opposite to the base, an infrared range finder is arranged on the side of the positioning plate close to the base, and a range finding plate matched with the infrared range finder is fixedly installed on the inner wall of the side of the support frame.

[0009] Through the cooperation of the infrared range finder and the range finding plate, the length of the product to be cut can be measured, and then the positioning plate is driven to move by the second air cylinder, and the rubber strip is positioned by contacting the side of the positioning plate opposite to the rubber strip end.

[0010] Further, the fixing assembly comprises a mounting plate slidingly installed in the support frame, two pressing plates symmetrically distributed are fixedly installed at the bottom end of the mounting plate, a first air cylinder is fixedly installed at the top end of the support frame, and the piston shaft end of the first air cylinder penetrates through the support frame and is fixedly connected with the top end of the mounting plate.

[0011] By adopting the above technical scheme, when the rubber strip positioning is completed, the mounting plate with the pressing plate is lowered by the first air cylinder, and the rubber strip is pressed by the pressing plate, so that the rubber strip can be fixed, and the stability of the rubber strip during slitting can be maintained.

[0012] Further, the mounting plate is fixedly installed with a sliding block on both sides, and a sliding groove matched with the sliding block on the same side is formed in the inner wall of the support frame.

[0013] By adopting the above technical scheme, when the mounting plate is lifted in the support frame driven by the first air cylinder, the mounting plate with the sliding block is located in the sliding groove on the same side and slides, and the stability of the lifting of the mounting plate can be maintained by the cooperation of the sliding block and the sliding groove.

[0014] Further, the cutting assembly comprises a bottom plate fixedly installed at the top end of the support block, a second speed reducer motor is fixedly installed at the top end of the bottom plate, a stable frame is fixedly installed on the inner wall of the top end of the mounting groove, a rotating rod is slidingly installed in the stable frame, one end of the rotating rod is fixedly connected with the output shaft of the second speed reducer motor, a cutting wheel is fixedly sleeved on the side wall of the rotating rod, and part of the cutting wheel is located in the moving groove.

[0015] By adopting the above technical scheme, the rotating rod is driven to rotate by the second speed reducer motor, and the cutting wheel is driven to rotate by the rotating rod, so as to facilitate subsequent cutting of the rubber strip.

[0016] Further, the driving assembly comprises a screw rod rotatingly installed in the support box, the support block is sleeved on the screw rod, an installation box is fixedly installed on one side of the support box, a first speed reducer motor is fixedly installed in the installation box, one end of the screw rod penetrates through the support box and extends to the installation box, the end of the screw rod penetrating through the installation box is fixedly connected with the output shaft end of the first speed reducer motor, limit blocks are fixedly installed on both sides of the support block, and limit grooves matched with the limit blocks on the same side are formed in the inner wall of the support box.

[0017] By adopting the above technical scheme, when the rubber strip is fixed, the screw rod is driven to rotate by the first speed reducer motor, the support block is driven to move in the support box by the screw rod, and the support block with the cutting wheel is driven to move in the moving groove, so as to cut the rubber strip.

[0018] Further, the dust suction assembly comprises a dust suction frame arranged at the bottom end of the base, a port of the dust suction frame is in butt joint with the mounting groove, a plurality of connectors are arranged at the bottom end of the dust suction frame, a collecting frame is arranged below the base, a mounting seat is fixedly arranged at one side of the collecting frame, a suction fan is fixedly arranged at the top end of the mounting seat, one end of the suction fan is communicated with the side of the collecting frame opposite to the suction fan, a connecting pipe is arranged between the side of the collecting frame away from the suction fan and the end of the plurality of connectors opposite to the plurality of connectors, filter cotton is arranged on the inner wall of the side of the collecting frame close to the mounting seat, and a sealing plate is hingedly arranged at one side of the collecting frame.

[0019] By adopting the above technical scheme, when the device cuts the rubber strip, waste may be generated, the suction fan generates suction force, and then the waste enters the dust suction frame through the moving groove, the waste enters the collecting frame through the dust suction frame, the plurality of connectors and the connecting pipe, the waste can be collected, filter cotton is arranged in the collecting frame, the waste is filtered, the waste can be prevented from entering the suction fan, and the operation effect of the suction fan can be maintained.

[0020] In summary, the utility model has the following beneficial technical effects:

[0021] (1) In the utility model, through the setting of the positioning assembly, through the cooperation of the infrared range finder and the range board, the required cutting length is accurately measured and determined, the positioning plate can be positioned, and the accuracy of the cutting of the device can be maintained.

[0022] (2) In the utility model, through the setting of the fixing assembly, the rubber is fixed and pressed, the stability of the cutting of the rubber can be maintained, then the cutting assembly is driven to move through the driving assembly, and the rubber can be slitting.

[0023] (3) In the utility model, through the setting of the dust suction assembly, the suction fan generates suction force, and then the waste enters the dust suction frame through the moving groove, the waste enters the collecting frame through the dust suction frame, the plurality of connectors and the connecting pipe, the waste can be collected, filter cotton is arranged in the collecting frame, the waste is filtered, the waste can be prevented from entering the suction fan, and the operation effect of the suction fan can be maintained. ACCURACY

[0024] Figure 1 It is a structure schematic view of the first perspective of the utility model;

[0025] Figure 2 It is an enlarged view of A in the utility model; Figure 1

[0026] Figure 3 It is a structure schematic view of the second perspective of the utility model;

[0027] ​Figure 4 For the utility model Figure 3 The enlarged view of B;

[0028] Figure 5 For the utility model is the sectional view;

[0029] Figure 6 For the utility model Figure 5 The enlarged view of C;

[0030] Figure 7 For the utility model is the explosion view of cutting assembly and drive assembly.

[0031] Explanation of reference numerals in the drawing:

[0032] 1, base;2, groove;3, blocking strip;4, conveying belt;5, support frame;6, pressing plate;7, mounting plate;8, first air cylinder;9, positioning plate;10, mounting box;11, sealing plate;12, collection frame;13, exhaust fan;14, mounting seat;15, cutting wheel;16, moving groove;17, filter cotton;18, connecting pipe;19, multi-way connector;20, second air cylinder;21, storage groove;22, dust absorption frame;23, infrared range finder;24, ranging board;25, stable frame;26, mounting groove;27, support box;28, first speed reducer;29, screw;30, support block;31, bottom plate;32, second speed reducer;33, rotating rod. DETAILED DESCRIPTION

[0033] 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 other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "set", "sleeve / joint", "connect" and the like should be understood broadly, for example, "connect", can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] The following combines the attached Figures 1-7 The utility model is further described in detail.

[0037] Please refer to Figures 1-7 A rubber slitting tool, including base 1, the four corners of base 1 bottom end are equipped with stand, the top end of base 1 is equipped with recess 2, the recess 2 is equipped with conveying belt 4, the conveying belt 4 is equipped with multiple straight line array distribution's fender 3, the top end of base 1 is fixedly installed with support frame 5, the side of base 1 away from recess 2 is equipped with positioning assembly, and the positioning assembly includes the positioning plate 9 of setting at the side of base 1 away from recess 2, the side of base 1 close to positioning plate 9 is equipped with two symmetrically distributed storage grooves 21, two storage grooves 21 are equipped with second cylinder 20, the piston shaft of two second cylinders 20 is fixedly connected with the side opposite to positioning plate 9, and the side close to base 1 of positioning plate 9 is equipped with infrared range finder 23, and the side inner wall of support frame 5 is fixedly installed with the range board 24 matched with infrared range finder 23.

[0038] The equipment uses, and multiple placement areas are separated by multiple fender 3 on conveying belt 4, which facilitates workers to place rubber strip, helps to avoid the winding phenomenon of rubber strip contact during conveying, is favorable for maintaining the stability of rubber strip conveying, and facilitates the synchronous cutting of multiple rubber strips by the equipment once, workers place rubber strip on conveying belt 4, and the frame body in the prior art is placed on the side of base 1 away from recess 2, which can play the role of collecting the products after slitting, when rubber strip is placed, through the cooperation of infrared range finder 23 and range board 24, the function of measuring the required cutting length of product can be played, then positioning plate 9 is driven to move through second cylinder 20, and the function of positioning rubber strip can be played through the contact of rubber strip end and the side opposite to positioning plate 9.

[0039] The support frame 5 is provided with a fixing assembly, the fixing assembly comprises an installation plate 7 slidably installed in the support frame 5, two pressing plates 6 symmetrically distributed and fixedly installed at the bottom end of the installation plate 7, a first air cylinder 8 fixedly installed at the top end of the support frame 5, the piston shaft end of the first air cylinder 8 penetrates through the support frame 5 and is fixedly connected with the top end of the installation plate 7, sliding blocks are fixedly installed on both sides of the installation plate 7, and sliding grooves matched with the sliding blocks on the same side are formed in the inner wall of the support frame 5; when the cutting length of the rubber strip required by the equipment is determined, the rubber strip is conveyed to the direction of the support frame 5 through the conveying belt 4, the side of the rubber strip opposite to the positioning plate 9 is contacted, so that the rubber strip is positioned, then the installation plate 7 drives the pressing plate 6 to descend through the first air cylinder 8, the rubber strip is pressed through the pressing plate 6, so that the rubber strip is fixed, the stability of the rubber strip during slitting is facilitated, and when the installation plate 7 is lifted and lowered in the support frame 5 driven by the first air cylinder 8, the installation plate 7 drives the sliding blocks to slide in the sliding grooves on the same side, and the stability of the installation plate 7 during lifting and lowering is facilitated through the cooperation of the sliding blocks and the sliding grooves.

[0040] The base 1 is provided with an installation groove 26 at the bottom end, is provided with a moving groove 16 at the top end, the moving groove 16 communicates with the installation groove 26, the inner wall of the top end of the installation groove 26 is fixedly installed with a support box 27, the support box 27 is provided with a support block 30, the support block 30 is provided with a cutting assembly at the top end, the cutting assembly comprises a bottom plate 31 fixedly installed at the top end of the support block 30, and the top end of the bottom plate 31 is fixedly installed with a second speed reducer 32; the inner wall of the top end of the installation groove 26 is fixedly installed with a stable frame 25, the stable frame 25 is slidably installed with a rotating rod 33, one end of the rotating rod 33 is fixedly connected with the output shaft of the second speed reducer 32, the side wall of the rotating rod 33 is fixedly sleeved with a cutting wheel 15, and the cutting wheel 15 is partially located in the moving groove 16.

[0041] The support block 30 and the support box 27 are provided with a driving assembly, the driving assembly comprises a screw rod 29 rotatably installed in the support box 27, the support block 30 is sleeved on the screw rod 29, one side of the support box 27 is fixedly installed with an installation box 10, the installation box 10 is fixedly installed with a first speed reducer 28, one end of the screw rod 29 penetrates through the support box 27 and extends to the installation box 10, the screw rod 29 penetrates through the installation box 10 and is fixedly connected with the output shaft end of the first speed reducer 28 at one end, and the support block 30 is fixedly installed with a limiting block on both sides.

[0042] When the rubber strip positioning is completed, the rotating rod 33 is driven to rotate by the second speed reducer motor 32, the cutting wheel 15 is driven to rotate by the rotating rod 33, then the screw rod 29 is driven to rotate by the first speed reducer motor 28, the support block 30 is driven to move in the support box 27 by the screw rod 29, the support block 30 synchronously moves with the bottom plate 31, the second speed reducer motor 32, the rotating rod 33 and the cutting wheel 15, the cutting wheel 15 moves in the moving groove 16, which can cut the rubber strip, and the rotating rod 33 slides in the stable frame 25, the stable frame 25 can support the rotating rod 33, which is beneficial to keep the stability of the cutting wheel 15.

[0043] The dust suction assembly is arranged below the base 1, which includes a dust suction frame 22 arranged at the bottom end of the base 1, the upper end of the dust suction frame 22 is connected with the mounting groove 26, the bottom end of the dust suction frame 22 is provided with a multi-way connector 19, a collecting box 12 is arranged below the base 1, the collecting box 12 is fixedly installed with a mounting seat 14 on one side, the mounting seat 14 is fixedly installed with an air extractor 13 at the top end, one end of the air extractor 13 is communicated with the side of the collecting box 12, the connecting pipe 18 is connected between the side of the collecting box 12 away from the air extractor 13 and the end of the multi-way connector 19 opposite to the dust suction frame 22, the inner wall of the side of the collecting box 12 close to the mounting seat 14 is provided with filter cotton 17, the collecting box 12 is hingedly installed with a sealing plate 11 on one side, the sealing plate 11 is provided with a sealing gasket close to the side of the collecting box 12, when the device cuts the rubber strip, the waste may be generated, the suction force is generated by the air extractor 13, and then the waste enters the dust suction frame 22 through the moving groove 16, the waste enters the collecting box 12 through the dust suction frame 22, the multi-way connector 19 and the connecting pipe 18, which can collect the waste, the filter cotton 17 is arranged in the collecting box 12, which can filter the waste, which is helpful to avoid the waste entering the air extractor 13, and is beneficial to keep the operation effect of the air extractor 13.

[0044] The embodiment of the utility model discloses the implementation principle is: the equipment uses, and the multiple placing area is separated through the cooperation of multiple fender 3 on the conveyer belt 4, and it is convenient for staff to place rubber strip, and it is helpful to avoid the winding phenomenon of rubber strip contact during conveying, and it is beneficial to keep the stability of rubber strip conveying, and it is convenient for equipment to cut multiple rubber strips synchronously once, staff places rubber strip on the conveyer belt 4, and the frame of prior art is placed on the base 1 far from the recess 2 one side, can play the role of collecting the product after slitting, the length required to cut rubber is determined through positioning assembly, then rubber strip is conveyed to support frame 5 direction through conveyer belt 4, and rubber strip and positioning assembly contact, can play the role of positioning rubber strip, and it is beneficial to keep the precision of equipment to rubber strip slitting, and it is convenient for cutting out the product of different length, when rubber strip positioning is completed, press and fix rubber strip through fixed assembly, and it is beneficial to keep the stability of rubber strip slitting, when rubber strip fixing is completed, cutting assembly is driven to move in moving groove 16 through drive assembly, can play the role of slitting product, when equipment cuts rubber strip, and it can produce waste, can collect waste through dust collection assembly, when product slitting is completed, move positioning assembly, then slitted product moves under the push of subsequent rubber strip, and slitted product falls into the frame of prior art under the action of gravity, then the above operation is repeated.

[0045] The above are preferred embodiments of the utility model, and not limit the protection scope of the utility model, therefore: all equivalent changes made according to the structure, shape, principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A rubber slitting tool comprising a base (1), characterised in that: The bottom end of the base (1) is provided with a stand, the top end of the base (1) is provided with a groove (2), the groove (2) is provided with a conveying belt (4), the conveying belt (4) is provided with a plurality of straight array distributed blocking strips (3), the top end of the base (1) is fixedly installed with a supporting frame (5), the side of the base (1) away from the groove (2) is provided with a positioning assembly, the supporting frame (5) is provided with a fixing assembly, the bottom end of the base (1) is provided with a mounting groove (26), the top end of the base (1) is provided with a moving groove (16), the moving groove (16) is communicated with the mounting groove (26), the top end of the mounting groove (26) is fixedly installed with a supporting box (27), the supporting box (27) is provided with a supporting block (30), the top end of the supporting block (30) is provided with a cutting assembly, the supporting block (30) and the supporting box (27) are provided with a driving assembly, and the bottom of the base (1) is provided with a dust collection assembly.

2. The rubber slitting apparatus of claim 1, wherein: The positioning assembly comprises a positioning plate (9) arranged on the side of the base (1) away from the groove (2), two accommodation grooves (21) are arranged on the side of the base (1) close to the positioning plate (9), two second air cylinders (20) are arranged in the two accommodation grooves (21), the piston shafts of the two second air cylinders (20) are fixedly connected to the side of the positioning plate (9) opposite to the base (1), an infrared range finder (23) is arranged on the side of the positioning plate (9) close to the base (1), and a range finding plate (24) matched with the infrared range finder (23) is fixedly installed on the inner wall of one side of the supporting frame (5).

3. The rubber slitting apparatus of claim 1, wherein: The fixing assembly comprises a mounting plate (7) slidably installed in the supporting frame (5), two pressing plates (6) are fixedly installed on the bottom end of the mounting plate (7), a first air cylinder (8) is fixedly installed on the top end of the supporting frame (5), and the piston shaft end of the first air cylinder (8) penetrates through the supporting frame (5) and is fixedly connected to the top end of the mounting plate (7).

4. The rubber slitting apparatus of claim 3, wherein: The mounting plate (7) is fixedly installed with a sliding block on both sides, and the inner wall of the supporting frame (5) is provided with a sliding groove matched with the sliding block on the same side.

5. The rubber slitting apparatus of claim 1, wherein: The cutting assembly comprises a bottom plate (31) fixedly installed on the top end of the supporting block (30), a second speed reducer (32) is fixedly installed on the top end of the bottom plate (31), a stable frame (25) is fixedly installed on the inner wall of the top end of the mounting groove (26), a rotating rod (33) is slidably installed in the stable frame (25), one end of the rotating rod (33) is fixedly connected to the output shaft of the second speed reducer (32), a cutting wheel (15) is fixedly sleeved on the side wall of the rotating rod (33), and the cutting wheel (15) is partially located in the moving groove (16).

6. The rubber slitting apparatus of claim 1, wherein: The driving assembly includes a screw rod (29) rotatably installed in a supporting box (27), a supporting block (30) sleeved on the screw rod (29), and a mounting box (10) fixedly installed on one side of the supporting box (27), a first speed reducer motor (28) fixedly installed in the mounting box (10), one end of the screw rod (29) penetrating through the supporting box (27) and extending to the mounting box (10), one end of the screw rod (29) penetrating through the mounting box (10) and fixedly connected with an output shaft end of the first speed reducer motor (28), and limiting blocks fixedly installed on both sides of the supporting block (30), and a limiting groove matched with the limiting block on the same side is formed in the inner wall of the supporting box (27).

7. The rubber slitting apparatus of claim 1, wherein: The dust suction assembly includes a dust suction frame (22) arranged at the bottom end of the base (1), a port at the upper end of the dust suction frame (22) is connected with the mounting groove (26), a multi-way connector (19) is arranged at the bottom end of the dust suction frame (22), a collecting frame (12) is arranged below the base (1), a mounting seat (14) is fixedly installed on one side of the collecting frame (12), a suction fan (13) is fixedly installed at the top end of the mounting seat (14), one end of the suction fan (13) is communicated with the side of the collecting frame (12) opposite to the mounting seat (14), a connecting pipe (18) is connected between the side of the collecting frame (12) away from the suction fan (13) and the end of the multi-way connector (19) opposite to the suction fan (13), filter cotton (17) is arranged on the inner wall of the side of the collecting frame (12) close to the mounting seat (14), a sealing plate (11) is hingedly arranged on one side of the collecting frame (12), and a sealing gasket is arranged on the side of the sealing plate (11) close to the collecting frame (12).

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