Spinning air bellow with filter element easy to replace

Abstract

The utility model relates to a spinning air bellow with a filter element easy to replace. The spinning air bellow comprises an upper air bellow, an air supply box, an air supply pipe and a metal fastening ring. The upper air bellow is of a hollow cubic structure composed of six cover plates. A plurality of filter elements are arranged in the upper air box; the air supply box is located below the upper air box and fixedly connected with the upper air box. The upper cover plate, the lower cover plate, the left cover plate, the right cover plate and the rear cover plate in the six cover plates define a groove body II with an opening in one surface; the front cover plate is detachably and fixedly connected with the groove body II; the metal fastening ring is of a circular ring structure; the lower part of the filter element is a threaded section; the metal fastening ring is in threaded connection with the filter element; the height of the metal fastening ring is smaller than or equal to that of the threaded section; the height in the upper air box is greater than that of the filter element and less than the sum of the height of the filter element and the height of the metal fastening ring. When the filter element is replaced, spinning does not need to be stopped, the filter element cannot be polluted, and safety is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of spinning equipment and relates to a spinning bellows with an easily replaceable filter element. Background Art

[0002] During spinning, the high-temperature melt must be cooled by cooling air after being extruded from the component to be shaped. However, the high-temperature melt is easily decomposed to produce small molecular white powder, which adheres to the surface of the filter element, resulting in poor air flow from the filter element, uneven cooling of the fiber, and floating, broken, and hairy fibers during the winding process. It is also easy to cause uneven stretching, which affects uneven dyeing during the fiber weaving process. Therefore, the spinning bellows is an important device used in the spinning production process, and the filter element is replaced frequently in daily work.

[0003] In the prior art, such as Figure 1 As shown, to replace the filter element of the spinning box, the upper cover of the bellows 1 needs to be removed, and there are also components such as the windless area aluminum plate 2, the foam pad 3, the sealing pad 4 and the metal ring 5 on the upper cover. When removing the upper cover, the windless area aluminum plate 2, the foam pad 3, the sealing pad 4 and the metal ring 5 also need to be removed, so that the filter element in the bellows can be taken out. After replacing the new filter element, the upper cover, the aluminum plate, the foam pad 3, the sealing pad 4 and the metal ring 5 need to be reinstalled, which is very time-consuming and laborious.

[0004] If you only want to replace a single spindle filter in the spinning box, you need to repeat the above process. After removing the upper cover, other filter elements cannot be fixed, which may easily cause position deviation and the concentricity needs to be rechecked. When replacing the filter element, you must stop the machine for replacement, which is a cumbersome process even if you only replace a single spindle filter element.

[0005] In addition, there are high-temperature components above the bellows cavity. Due to the pressure, the components will drip high-temperature melt, which is easy to cause burns when replacing the filter element, posing a great safety hazard. The dripping into the filter element will cause the filter element to become dirty. If the filter element is replaced frequently, the small screws on the upper cover plate are prone to stripping, requiring a very cumbersome screw hole drilling process.

[0006] CN201922083912.0 provides a modular spinning ring blower structure, which simplifies the cooling air duct. However, during disassembly and maintenance, only the cover plate can be removed to take out the filter element for cleaning.

[0007] Therefore, it is of great significance to study a spinning bellows with an easy-to-replace filter element to solve the above problems. Utility Model Content

[0008] The utility model aims to solve the problems existing in the prior art and provide a spinning bellows with an easy-to-replace filter element.

[0009] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0010] A spinning bellows with easily replaceable filter elements, comprising an upper bellows, an air supply box and an air supply pipe; the upper bellows is a hollow cubic structure composed of 6 cover plates; a plurality of filter elements are arranged in the upper bellows; a plurality of through holes I are arranged on the upper cover plate of the upper bellows; the centers of the openings of the plurality of through holes I are all located on a straight line I; the lower cover plate of the upper bellows is a porous plate, and a plurality of through holes II and a plurality of small holes are arranged on the porous plate; the through holes I correspond to the through holes II one by one, and the diameters of the through holes I and the through holes II are the same as the inner diameter of the filter element; the air supply box is a trough body I with an opening on the top, and a plurality of through holes III are arranged at the bottom of the trough body I, and the number of the through holes III is the same as that of the through holes I; The air supply box is located below the upper air box and is fixedly connected to the upper air box; a plurality of metal cylinders are arranged inside the air supply box; the upper end of the metal cylinder is sealedly connected to the through hole II, and the lower end of the metal cylinder is sealedly connected to the through hole III; the air supply pipe is connected to the air supply box for delivering cold air to the air supply box; the interior of the air supply box is connected to the interior of the upper air box through a plurality of small holes of the porous plate; the plurality of small holes of the porous plate are used for rectifying the cold air, and the upper cover plate, the lower cover plate, the left cover plate, the right cover plate and the rear cover plate of the six cover plates form a trough body II with an opening on one side; the front cover plate is detachably fixedly connected to the trough body II; the front cover plate is parallel to the straight line I;

[0011] The spinning bellows with easy-to-replace filter element also includes a metal fastening ring; the metal fastening ring is a circular ring structure;

[0012] The lower part of the filter element is a threaded section, and the metal fastening ring is threadedly connected to the filter element; the height of the metal fastening ring is less than or equal to the height of the threaded section;

[0013] The height of the interior of the upper bellows is greater than the height of the filter element, and less than the sum of the height of the filter element and the height of the metal fastening ring;

[0014] When installing the filter element, open the front cover, connect the metal fastening ring with the filter element thread, and tighten it. Place the metal fastening ring and the filter element inside the upper bellows, align the upper end of the filter element with the through hole I, and the lower end of the metal fastening ring with the through hole II; use a belt wrench to loosen the metal fastening ring, increase the overall height of the metal fastening ring and the filter element thread, so that the metal fastening ring and the filter element as a whole, transitionally fit with the upper bellows inside the upper bellows;

[0015] When removing the filter element, open the front cover, use a belt wrench to tighten the bottom of the filter element with the metal fastening ring, and then take it out from the upper air box.

[0016] As the preferred technical solution:

[0017] A spinning air box with an easily replaceable filter element as described above, the lower surface of the upper cover plate is provided with a plurality of positioning grooves I, and the upper surface of the perforated plate is provided with a plurality of positioning grooves II; the positioning groove I is a cylindrical structure, the number of the positioning grooves I is the same as that of the through holes I, and the central axes of the positioning grooves I coincide with the central axes of the through holes I one by one; the positioning groove II is a cylindrical structure, the number of the positioning grooves II is the same as that of the through holes II, and the central axes of the positioning grooves II coincide with the central axes of the through holes II one by one; the diameter of the positioning groove I is the same as the outer diameter of the filter element, and the diameter of the positioning groove II is the same as the outer diameter of the metal fastening ring;

[0018] The sum of the height inside the upper air box, the height of the positioning groove I and the height of the positioning groove II is less than the sum of the height of the filter element and the height of the metal fastening ring.

[0019] A spinning air box with an easily replaceable filter element as described above, the upper bottom surface of the filter element is provided with a sealing ring I, and the lower surface of the metal fastening ring is provided with a sealing ring II;

[0020] During installation, the filter element is hermetically connected to the upper cover plate through the sealing ring I, and the metal fastening ring is hermetically connected to the perforated plate through the sealing ring II.

[0021] A spinning air box with an easily replaceable filter element as described above, the notch of the groove body II extends outward along the front-rear direction to form a cavity housing; the cavity housing is a hollow cubic structure, including an upper plate, a lower plate, a left plate and a right plate;

[0022] The front cover plate includes an upper horizontal plate I, a lower horizontal plate II, a vertical plate I, a vertical plate II and a vertical plate III;

[0023] The upper horizontal plate I, the lower horizontal plate II and the vertical plate I have the same length, all equal to the distance between the left plate and the right plate;

[0024] The upper horizontal plate I and the lower horizontal plate II are respectively connected to the vertical plate I, and the three form a U-shaped groove; along the front-rear direction of the upper air box, the longitudinal section of the U-shaped groove is a U-shaped structure; the notch direction of the U-shaped groove faces away from the groove body II; the height of the U-shaped groove is equal to the distance between the upper plate and the lower plate;

[0025] The vertical plate II and the vertical plate III have the same shape; the vertical plate II and the vertical plate III are respectively located at the notch of the U-shaped groove, and are respectively fixedly connected to the upper horizontal plate I and the lower horizontal plate II;

[0026] When the front cover plate is detachably and fixedly connected to the groove body II, the front cover plate is arranged inside the cavity housing and is sealed with the groove body II through a sealing strip.

[0027] A spinning air box with an easily replaceable filter element as described above, the spinning air box with an easily replaceable filter element further includes a buckle and a T-shaped bolt;

[0028] The upper plate is provided with a long strip-shaped through hole I and a long strip-shaped through hole II;

[0029] The lower plate is provided with a long strip through hole III and a long strip through hole IV;

[0030] The upper horizontal plate I is provided with a long strip through hole V and a long strip through hole VI;

[0031] The lower horizontal plate II is provided with a long strip through hole VII and a long strip through hole VIII;

[0032] The long strip through hole I, the long strip through hole II, the long strip through hole III, the long strip through hole IV, the long strip through hole V, the long strip through hole VI, the long strip through hole VII and the long strip through hole VIII are keyholes with the same size;

[0033] Along the vertical direction, the vertical projections of the elongated through hole I, the elongated through hole III, the elongated through hole V and the elongated through hole VII coincide with each other; along the vertical direction, the vertical projections of the elongated through hole II, the elongated through hole IV, the elongated through hole VI and the elongated through hole VIII coincide with each other;

[0034] The lock buckle is a quasi-rectangular plate, and the two widths of the quasi-rectangular plate are both arc-shaped edges, and the two widths are on the same circle; the center of the circle where the two widths are located coincides with the intersection of the diagonal of the quasi-rectangular plate; the number of lock buckles is 2, which are respectively recorded as lock buckle I and lock buckle II;

[0035] The distance between the leftmost end of the long strip through hole V on the lower surface of the upper horizontal plate I and the rightmost end of the long strip through hole VII on the upper surface of the lower horizontal plate II is greater than the diameter of the circle where the two widths of the rectangular plate are located. This design makes it convenient for the lock buckle to be rotated and taken out;

[0036] The distance between the leftmost end of the long strip through hole I on the lower surface of the upper plate and the leftmost end of the long strip through hole III on the upper surface of the lower plate is smaller than the diameter of the circle where the two widths of the rectangular plate are located, so that the lock buckle can be locked conveniently;

[0037] The thickness of the quasi-rectangular plate is smaller than the width of the long strip-shaped through hole I;

[0038] The number of T-bolts is 2, which are denoted as T-bolt I and T-bolt II;

[0039] The T-bolt I passes through the center of the two wide circles of the vertical plate II and the lock buckle I, and is threadedly connected to the vertical plate II and the lock buckle I respectively;

[0040] The T-bolt II passes through the center of the two wide circles of the vertical plate III and the lock buckle II, and is threadedly connected with the vertical plate III and the lock buckle II respectively;

[0041] The midpoint of the line connecting the leftmost end of the long strip through hole V on the lower surface of the upper horizontal plate I and the rightmost end of the long strip through hole VII on the upper surface of the lower horizontal plate II coincides with the intersection of the diagonal line of the lock buckle I;

[0042] The midpoint of the line connecting the leftmost end of the long strip through hole VI on the lower surface of the upper horizontal plate I and the rightmost end of the long strip through hole VIII on the upper surface of the lower horizontal plate II coincides with the intersection of the diagonal line of the lock buckle II;

[0043] When the front cover plate and the trough body II need to be fixedly connected, rotate the T-shaped bolt so that the straight edge of the lock is in a vertical state; when the front cover plate and the trough body II need to be disassembled and separated, rotate the T-shaped bolt so that the straight edge of the lock is in a horizontal state.

[0044] Beneficial effects:

[0045] (1) The utility model provides a spinning bellows with an easy-to-replace filter element. When replacing the filter element, the front cover is opened, and the filter element is replaced at the side spinning position. Only a metal baffle plate is laid above the bellows body to prevent the melt from flowing into the spinning bellows from the through hole I of the upper cover plate, so that when replacing the filter element, there is no need to stop spinning, and the filter element will not be contaminated, which is highly safe.

[0046] (2) The utility model provides a spinning bellows with an easily replaceable filter element, and the process of replacing the filter element is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of a spinning bellows in the prior art;

[0048] Figure 2 A schematic diagram of a spinning bellows with an easy-to-replace filter element when the front cover is fixed;

[0049] Figure 3 A schematic diagram of a spinning bellows with an easily replaceable filter element when the front cover is removed;

[0050] Figure 4 It is a cross-sectional view of the spinning bellows with an easily replaceable filter element of the utility model;

[0051] Figure 5 It is a partial schematic diagram of the upper bellows of the utility model;

[0052] Figure 6 This is a schematic diagram of the structure of the front cover of the utility model;

[0053] Figure 7 This is a schematic diagram of the structure of the lock buckle of the utility model;

[0054] Figure 8 This is a schematic diagram of the structure of the T-shaped bolt of the utility model;

[0055] Fig. 9 This is a schematic diagram of the connection between the metal fastening ring and the filter element of the utility model;

[0056] Fig.10 This is a schematic diagram of the structure of the filter element of the utility model;

[0057] Among them, 1-bellows, 2-aluminum plate in the windless area, 3-foam pad, 4-sealing pad, 5-metal ring, 6-upper bellows, 7-air supply box, 8-filter element, 9-upper cover, 10-porous plate, 11-front cover, 12-trough body I, 13-cavity shell, 14-lock, 15-T-bolt, 16-positioning groove I, 17-positioning groove II, 18-sealing strip, 19-metal cylinder, 20-metal fastening ring, 21-upper horizontal plate I, 22-lower horizontal plate II, 23-vertical plate I, 24-vertical plate II, 25-vertical plate III, 26-long strip through hole II, 27-long strip through hole IV, 28-long strip through hole VI, 29-long strip through hole VIII. DETAILED DESCRIPTION

[0058] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0059] A spinning bellows with an easily replaceable filter element 8, such as Figure 2 to Figure 10 As shown, it includes an upper air box 6, an air supply box 7, an air supply pipe, a metal fastening ring 20, a lock 14 and a T-bolt 15;

[0060] The upper bellows 6 is a hollow cubic structure composed of 6 cover plates; a plurality of filter elements 8 are arranged in the upper bellows 6, and a sealing ring I is arranged on the upper bottom surface of the filter element 8; the lower part of the filter element 8 is a threaded section;

[0061] The metal fastening ring 20 is a circular ring structure; a sealing ring II is provided on the lower surface of the metal fastening ring 20;

[0062] The metal fastening ring 20 is threadedly connected to the filter element 8; the height of the metal fastening ring 20 is less than or equal to the height of the threaded section;

[0063] The upper cover plate 9 of the upper bellows 6 is provided with a plurality of through holes I; the centers of the openings of the plurality of through holes I are all located on the straight line I; the lower surface of the upper cover plate 9 is provided with a plurality of positioning grooves I16, the positioning grooves I16 are cylindrical structures, the number of the positioning grooves I16 is the same as the through holes I, and the central axis of the positioning grooves I16 coincides with the central axis of the through holes I one by one; the diameter of the positioning grooves I16 is the same as the outer diameter of the filter element 8;

[0064] The lower cover plate of the upper air box 6 is a perforated plate 10, and the perforated plate 10 is provided with a plurality of through holes II and a plurality of small holes; the through holes I correspond to the through holes II one by one, and the diameters of the through holes I and the through holes II are the same as the inner diameter of the filter element 8; the upper surface of the perforated plate 10 is provided with a plurality of positioning grooves II 17; the positioning grooves II 17 are cylindrical structures, the number of the positioning grooves II 17 is the same as that of the through holes II, and the central axes of the positioning grooves II 17 coincide with the central axes of the through holes II one by one; the diameter of the positioning grooves II 17 is the same as the outer diameter of the metal fastening ring 20;

[0065] The height inside the upper air box 6 is greater than the height of the filter element 8, and the sum of the height inside the upper air box 6, the height of the positioning groove I 16 and the height of the positioning groove II 17 is less than the sum of the height of the filter element 8 and the height of the metal fastening ring 20;

[0066] The upper cover plate 9, the lower cover plate, the left cover plate, the right cover plate and the rear cover plate among the 6 cover plates enclose a trough body II with one open side;

[0067] The notch of the trough body II extends outward along the front-back direction to form a cavity shell 13; the cavity shell 13 is a hollow cubic structure, including an upper plate, a lower plate, a left plate and a right plate;

[0068] The front cover plate 11 includes an upper horizontal plate I 21, a lower horizontal plate II 22, a vertical plate I 23, a vertical plate II 24 and a vertical plate III 25;

[0069] The upper horizontal plate I 21, the lower horizontal plate II 22 and the vertical plate I 23 have the same length, which is equal to the distance between the left plate and the right plate;

[0070] The upper horizontal plate I 21 and the lower horizontal plate II 22 are respectively connected to the vertical plate I 23, and the three form a U-shaped groove; the notch direction of the U-shaped groove faces away from the trough body II; the height of the U-shaped groove is equal to the distance between the upper plate and the lower plate;

[0071] The vertical plate II 24 and the vertical plate III 25 have the same shape; the vertical plate II 24 and the vertical plate III 25 are respectively located at the notch of the U-shaped groove, and are respectively fixedly connected to the upper horizontal plate I 21 and the lower horizontal plate II 22;

[0072] The front cover plate 11 is arranged inside the cavity shell 13 and is sealed with the trough body II through a sealing strip 18; the vertical plate I 23 of the front cover plate 11 is parallel to the straight line I;

[0073] The upper plate is provided with a long strip through hole I and a long strip through hole II 26;

[0074] The lower plate is provided with a long strip through hole III and a long strip through hole IV 27;

[0075] The upper horizontal plate I 21 is provided with a long strip through hole V and a long strip through hole VI 28;

[0076] The lower horizontal plate II 22 is provided with a long strip through hole VII and a long strip through hole VIII 29;

[0077] The elongated through hole I, the elongated through hole II 26, the elongated through hole III, the elongated through hole IV 27, the elongated through hole V, the elongated through hole VI 28, the elongated through hole VII and the elongated through hole VIII 29 are keyholes and have the same size;

[0078] Along the vertical direction, the vertical projections of the elongated through hole I, the elongated through hole III, the elongated through hole V and the elongated through hole VII coincide with each other; along the vertical direction, the vertical projections of the elongated through hole II 26, the elongated through hole IV 27, the elongated through hole VI 28 and the elongated through hole VIII 29 coincide with each other;

[0079] The lock buckle 14 is a rectangular plate, and the two widths of the rectangular plate are both arc-shaped edges, and the two widths are on the same circle; the center of the circle where the two widths are located coincides with the intersection of the diagonal of the rectangular plate; the number of the lock buckles 14 is 2, which are respectively recorded as lock buckle I and lock buckle II;

[0080] The distance between the leftmost end of the long strip through hole V on the lower surface of the upper horizontal plate I 21 and the rightmost end of the long strip through hole VII on the upper surface of the lower horizontal plate II 22 is greater than the diameter of the circle where the two widths of the quasi-rectangular plate are located;

[0081] The distance between the leftmost end of the long strip through hole I on the lower surface of the upper plate and the leftmost end of the long strip through hole III on the upper surface of the lower plate is smaller than the diameter of the circle where the two widths of the quasi-rectangular plate are located;

[0082] The thickness of the quasi-rectangular plate is smaller than the width of the long strip-shaped through hole I;

[0083] The number of the T-bolts 15 is 2, which are denoted as T-bolt I and T-bolt II;

[0084] The T-bolt I passes through the center of the circle where the two widths of the vertical plate II 24 and the lock buckle I are located, and is threadedly connected to the vertical plate II and the lock buckle I respectively;

[0085] The T-bolt II passes through the center of the circle where the two widths of the vertical plate III 25 and the lock buckle II are located, and is threadedly connected to the vertical plate III and the lock buckle II respectively;

[0086] The midpoint of the line connecting the leftmost end of the long strip through hole V on the lower surface of the upper horizontal plate I 21 and the rightmost end of the long strip through hole VII on the upper surface of the lower horizontal plate II 22 coincides with the intersection of the diagonal line of the lock buckle I;

[0087] The midpoint of the line connecting the leftmost end of the long strip through hole VI 28 on the lower surface of the upper horizontal plate I 21 and the rightmost end of the long strip through hole VIII 29 on the upper surface of the lower horizontal plate II 22 coincides with the intersection of the diagonal line of the lock buckle II;

[0088] The air supply box 7 is a trough body I12 with an opening on the top, and a plurality of through holes III are provided at the bottom of the trough body I, the number of which is the same as that of the through holes I; the air supply box 7 is located below the upper air box 6 and is fixedly connected to the upper air box 6; a plurality of metal cylinders 19 are provided inside the air supply box 7; the upper end of the metal cylinder 19 is sealedly connected to the through hole II, and the lower end of the metal cylinder 19 is sealedly connected to the through hole III; the air supply pipe is connected to the air supply box 7 for conveying cold air to the air supply box 7; the interior of the air supply box 7 is connected to the interior of the upper air box 6 through a plurality of small holes of the porous plate 10; the multiple small holes of the porous plate 10 are used for rectifying the cold air.

[0089] Specific use process: when installing the filter element 8, open the front cover 11, connect the metal fastening ring 20 with the filter element 8 by threading, and tighten it, place the metal fastening ring 20 and the filter element 8 inside the upper bellows 6, align the upper end of the filter element 8 with the through hole I, and align the lower end of the metal fastening ring 20 with the through hole II; use a belt wrench to loosen the metal fastening ring 20, increase the overall height of the metal fastening ring 20 and the filter element 8 thread, so that the metal fastening ring 20 and the filter element 8 as a whole, transitionally fit with the upper bellows 6 inside the upper bellows 6;

[0090] When removing the filter element 8, open the front cover 11, use a belt wrench to tighten the bottom of the filter element 8 with the metal fastening ring 20, and then take it out from the upper bellows 6;

[0091] When the front cover 11 and the trough body II need to be fixedly connected, the T-shaped bolt 15 is rotated so that the straight edge of the lock buckle 14 is in a vertical state; when the front cover 11 and the trough body II need to be disassembled and separated, the T-shaped bolt 15 is rotated so that the straight edge of the lock buckle 14 is in a horizontal state.

Claims

1. A spinning air box with easily replaceable filters, comprising an upper air box, a blowing air box and an air supply pipe; the upper air box is a hollow cubic structure composed of 6 cover plates; multiple filters are arranged inside the upper air box; multiple through holes I are provided on the upper cover plate of the upper air box; the centers of the orifices of the multiple through holes I are all located on a straight line I; the lower cover plate of the upper air box is a perforated plate, and multiple through holes II and multiple small holes are provided on the perforated plate; the through holes I correspond to the through holes II one by one, and the diameters of the through holes I and II are the same as the inner diameter of the filter; the blowing air box is a trough I with an open top, and multiple through holes III are provided at the bottom of the trough I, and the number is the same as that of the through holes I; the blowing air box is located below the upper air box and is fixedly connected to the upper air box; multiple metal cylinders are arranged inside the blowing air box; the upper end of the metal cylinder is hermetically connected to the through hole II, and the lower end of the metal cylinder is hermetically connected to the through hole III; the air supply pipe is communicated with the blowing air box and is used for conveying cold air to the blowing air box; the inside of the blowing air box is communicated with the inside of the upper air box through multiple small holes in the perforated plate; the multiple small holes in the perforated plate are used for rectifying the cold air. Characterized in that, The upper cover plate, the lower cover plate, the left cover plate, the right cover plate and the rear cover plate among the 6 cover plates enclose a trough II with one open side; the front cover plate is detachably and fixedly connected to the trough II; the front cover plate is parallel to the straight line I. The spinning air box with easily replaceable filters further includes a metal fastening ring; the metal fastening ring is a ring structure. The lower part of the filter is a threaded section, and the metal fastening ring is threadedly connected to the filter; the height of the metal fastening ring is less than or equal to the height of the threaded section. The height inside the upper air box is greater than the height of the filter and less than the sum of the height of the filter and the height of the metal fastening ring.

2. A spinning air box with easily replaceable filters according to claim 1, Characterized in that, Multiple positioning grooves I are provided on the lower surface of the upper cover plate, and multiple positioning grooves II are provided on the upper surface of the perforated plate; the positioning groove I is a cylindrical structure, and the number of the positioning grooves I is the same as that of the through holes I, and the central axis of the positioning groove I coincides with the central axis of the through hole I one by one; The positioning groove II is a cylindrical structure, and the number of the positioning grooves II is the same as that of the through holes II, and the central axis of the positioning groove II coincides with the central axis of the through hole II one by one; the diameter of the positioning groove I is the same as the outer diameter of the filter, and the diameter of the positioning groove II is the same as the outer diameter of the metal fastening ring. The sum of the height inside the upper air box, the height of the positioning groove I and the height of the positioning groove II is less than the sum of the height of the filter and the height of the metal fastening ring.

3. A spinning air box with easily replaceable filters according to claim 2, Characterized in that, A sealing ring I is provided on the upper bottom surface of the filter, and a sealing ring II is provided on the lower surface of the metal fastening ring.

4. A spinning air box with easily replaceable filters according to claim 1, Characterized in that, The notch of the trough II extends outward along the front-back direction to form a cavity shell; the cavity shell is a hollow cubic structure, including an upper plate, a lower plate, a left plate and a right plate. The front cover plate includes an upper horizontal plate I, a lower horizontal plate II, a vertical plate I, a vertical plate II and a vertical plate III. The upper horizontal plate I, the lower horizontal plate II and the vertical plate I have the same length, which is equal to the distance between the left plate and the right plate. The upper horizontal plate I and the lower horizontal plate II are respectively connected to the vertical plate I, and the three form a U-shaped groove. The notch direction of the U-shaped groove deviates from the groove body II; the height of the U-shaped groove is equal to the distance between the upper plate and the lower plate; The vertical plate II and the vertical plate III have the same shape; the vertical plate II and the vertical plate III are respectively located at the notch of the U-shaped groove, and are respectively fixedly connected to the upper horizontal plate I and the lower horizontal plate II; The front cover plate is arranged inside the cavity housing and is sealed with the groove body II through a sealing strip.

5. A spinning air box with an easily replaceable filter element according to claim 4, characterized in that, the spinning air box with an easily replaceable filter element further includes a lock catch and a T-shaped bolt; The upper plate is provided with a long strip through hole I and a long strip through hole II; The lower plate is provided with a long strip through hole III and a long strip through hole IV; The upper horizontal plate I is provided with a long strip through hole V and a long strip through hole VI; The lower horizontal plate II is provided with a long strip through hole VII and a long strip through hole VIII; The long strip through hole I, the long strip through hole II, the long strip through hole III, the long strip through hole IV, the long strip through hole V, the long strip through hole VI, the long strip through hole VII and the long strip through hole VIII have the same size; Along the vertical direction, the vertical projections of the long strip through hole I, the long strip through hole III, the long strip through hole V and the long strip through hole VII coincide; along the vertical direction, the vertical projections of the long strip through hole II, the long strip through hole IV, the long strip through hole VI and the long strip through hole VIII coincide; The lock catch is a rectangular plate-like shape, the two widths of the rectangular plate-like shape are both arc-shaped edges, and the two widths are on the same circle; the center of the circle where the two widths are located coincides with the intersection point of the diagonal of the rectangular plate-like shape; the number of lock catches is 2, which are respectively denoted as lock catch I and lock catch II; The distance between the leftmost end of the long strip through hole V on the lower surface of the upper horizontal plate I and the rightmost end of the long strip through hole VII on the upper surface of the lower horizontal plate II is greater than the diameter of the circle where the two widths of the rectangular plate-like shape are located; The distance between the leftmost end of the long strip through hole I on the lower surface of the upper plate and the leftmost end of the long strip through hole III on the upper surface of the lower plate is less than the diameter of the circle where the two widths of the rectangular plate-like shape are located; The thickness of the rectangular plate-like shape is less than the width of the long strip through hole I; The number of T-shaped bolts is 2, denoted as T-shaped bolt I and T-shaped bolt II; The T-shaped bolt I passes through the vertical plate II and the center of the circle where the two widths of the lock catch I are located, and is respectively threadedly connected to the vertical plate II and the lock catch I; The T-shaped bolt II passes through the vertical plate III and the center of the circle where the two widths of the lock catch II are located, and is respectively threadedly connected to the vertical plate III and the lock catch II; The midpoint of the connection line between the leftmost end of the long strip through hole V on the lower surface of the upper horizontal plate I and the rightmost end of the long strip through hole VII on the upper surface of the lower horizontal plate II coincides with the intersection point of the diagonal of the lock catch I; The midpoint of the connection line between the leftmost end of the long strip through hole VI on the lower surface of the upper horizontal plate I and the rightmost end of the long strip through hole VIII on the upper surface of the lower horizontal plate II coincides with the intersection point of the diagonal of the lock catch II.

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