Textile leftover material treatment device

Abstract

The invention relates to the technical field of textile leftover material recovery, in particular to a textile leftover material treatment device which comprises a leftover material pretreatment mechanism for preliminarily cleaning leftover materials, the leftover material pretreatment mechanism comprises a treatment box, a dust screening assembly is arranged in an inner cavity of the treatment box, and the dust screening assembly comprises a discharging hopper rotationally connected with the inner cavity of the treatment box; an annular screening barrel is fixedly mounted at the top end of the discharging hopper, and a smashing assembly for smashing leftover materials in an inner cavity of the annular screening barrel is arranged at the top end of the inner wall of the treatment box and comprises a first rotating rod and a second rotating rod which are rotationally connected to the top end of the inner wall of the treatment box. The first rotating rod and the second rotating rod are symmetrically arranged at the top end of the inner wall of the treatment box, and crushing blade groups fixedly sleeve the peripheral walls of the first rotating rod and the second rotating rod; by means of the leftover material cleaning device, leftover materials can be evenly cleaned, the leftover materials can be cleaned regularly, and then the cleaning effect of the device can be guaranteed conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of textile scrap recycling, in particular to a textile scrap processing device. Background Art

[0002] The production of textile fabrics often produces a large amount of scraps. These scraps are useless, but they are scattered around the textile factory, making the interior of the textile factory look dirty and messy. Therefore, textile scrap processing equipment is needed to recycle broken fabrics, scraps, etc.

[0003] In the prior art, there is an invention patent with a publication (announcement) number of CN110813735A and a name of an environmentally friendly scrap recycling device for clothing production, which includes a support frame, a metal shell is fixed to one side of the top of the support frame by bolts, a feed hopper is fixed to the outer wall of the top of the metal shell by bolts, a bucket-shaped shell is fixed to one side of the metal shell by bolts, an arc-shaped mesh plate is fixed to the intersection of the inner wall of the bucket-shaped shell and the metal shell by bolts, a cover plate assembly is hinged on one side of the bottom end of the bucket-shaped shell, and a negative pressure mechanism is provided in the bucket-shaped shell; the invention facilitates the separation of fragments or dust in the scraps after crushing from the cloth pieces, improves the quality of the cloth pieces, is conducive to later recycling, and is energy-saving and environmentally friendly.

[0004] The equipment of the patent facilitates the separation of the debris or dust in the scraps after the crushing process from the cloth pieces, improves the quality of the cloth pieces, is conducive to later recycling, and is energy-saving and environmentally friendly; however, the equipment of the patent still has the following technical defects during use: (1) Since the second brushless electric roller used to flip the scraps in the patented equipment is located at the middle and lower ends of the arc-shaped mesh plate, it is inconvenient for the equipment to flip the scraps attached to the middle and upper ends of the arc-shaped mesh plate, making it difficult for the equipment to simultaneously clean the scraps located at the middle and upper ends of the arc-shaped mesh plate during operation, thereby reducing the overall cleaning efficiency of the equipment; (2) Since the equipment of the patent requires manual observation of the cleaning status of the scraps when cleaning the scraps, the equipment is relatively labor-intensive and inconvenient to meet the use needs of the staff. Summary of the invention

[0005] The purpose of the invention is to provide a textile scrap processing device.

[0006] The technical problems solved by the present invention are:

[0007] (1) The existing equipment is not convenient for evenly cleaning the scraps;

[0008] (2) The existing equipment requires human observation when cleaning the scraps, which leads to the problem of high labor consumption.

[0009] The present invention can be implemented through the following technical scheme: a textile scrap processing device, including a scrap pre-processing mechanism for preliminary cleaning of the scraps, the scrap pre-processing mechanism including a processing box, the inner cavity of the processing box is provided with a dust screening assembly, the dust screening assembly includes a lower hopper rotatably connected to the inner cavity of the processing box, a circular ring screening cylinder is fixedly installed on the top of the lower hopper, a crushing assembly for crushing the scraps in the inner cavity of the circular ring screening cylinder is provided on the top of the inner wall of the processing box, the crushing assembly includes a first rotating rod and a second rotating rod respectively rotatably connected to the top of the inner wall of the processing box, the first rotating rod and the second rotating rod are symmetrically arranged at the top of the inner wall of the processing box, and a crushing blade group is fixedly sleeved on the outer peripheral wall of the first rotating rod and the second rotating rod;

[0010] A scrap cleaning machine is arranged at the bottom end of the processing box for further processing the scraps.

[0011] A further technical improvement of the present invention is that a linkage part for intermittently rotating the lower hopper is arranged on the outer peripheral wall of the first rotating rod, the linkage part includes an active groove wheel fixedly mounted on the outer peripheral wall of the first rotating rod, the active groove wheel is located above the crushing blade group, a driven dial matching the active groove wheel is fixedly installed on the top of the annular screening cylinder, six concave locking arcs of the driven dial match with the convex locking arcs of the active groove wheel, a fan-shaped dial plate is fixedly installed at the bottom end of the active groove wheel, three round pins are fixedly installed at the bottom end of the driven dial, and the round pins abut against the inclined surface of the fan-shaped dial.

[0012] A further technical improvement of the present invention is that at least one screening acceleration mechanism is arranged on the side wall of the processing box, the screening acceleration mechanism comprises a filter plate which is embedded in the side wall of the processing box and corresponds to the annular screening cylinder, a covering funnel for covering the filter plate is fixedly installed on the side wall of the filter plate, and a fan connected to the covering funnel is fixedly installed on the side wall of the processing box.

[0013] A further technical improvement of the present invention is that the aperture of the filter holes in the filter plate is smaller than the aperture of the sieve holes in the annular sieve cylinder.

[0014] A further technical improvement of the present invention is that a circular receiving plate for receiving the crushed powder and dust screened by the circular screening cylinder is fixedly installed between the two inner side walls of the processing box.

[0015] A further technical improvement of the present invention is that at least one push plate which fits the inner wall of the processing box is fixedly installed on the outer peripheral wall of the annular screening cylinder, and a dust temporary storage bucket is fixedly installed on the bottom end of the annular receiving plate.

[0016] A further technical improvement of the present invention is that a belt transmission member is arranged between the first rotating rod and the second rotating rod, and the belt transmission member includes a first pulley and a second pulley which are respectively fixedly mounted on the outer peripheral walls of the first rotating rod and the second rotating rod, and the first pulley and the second pulley are connected by a transmission belt.

[0017] A further technical improvement of the present invention is that the inner cavity of the lower hopper is provided with a quantitative discharge component for allowing the cleaned scraps to enter the scrap cleaning machine, the quantitative discharge component includes a top column vertically elastically slidably connected to the inner cavity of the lower hopper, a fixed plate corresponding to the lower hopper is fixedly installed at the bottom end of the processing box, two electromagnetic plates with the same magnetic properties are embedded and installed on the opposite sides of the fixed plate and the top column, a trigger rod is fixedly installed on the outer peripheral wall of the lower hopper, and a trigger switch corresponding to the trigger rod is fixedly installed on the side wall of the dust temporary storage bucket, and the two electromagnetic plates are electrically connected to the trigger switch.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention puts the scraps to be processed into a container composed of a lower hopper, an annular screening cylinder and an annular connecting cylinder through the feed pipes on both sides of the processing box, and drives the crushing blade group fixedly installed on the outer peripheral wall to evenly crush and stir the scraps in the container through the synchronous rotation of the first rotating rod and the second rotating rod, and facilitates the adsorption of the stirred scraps by the fan, and the adsorption of the scraps or dust attached to the scraps is convenient to attract the crushed scraps or dust attached to the scraps to the side wall of the filter plate. When the first rotating rod rotates, the active groove wheel is driven to rotate. When the active groove wheel rotates, the outer convex locking arc of the active groove wheel will be stuck by the inner concave locking arc of the driven dial, so that the driven dial remains stationary. With the further rotation of the active groove wheel, the inclined surface of the fan-shaped dial is abutted against the round pin at the bottom end of the driven dial, so that the driven dial rotates. The rotation of the active groove wheel drives the driven dial to rotate intermittently, and the intermittent rotation of the driven dial drives the container to rotate synchronously and intermittently. The rotation of the annular screening drum facilitates the discharge of crushed powder or dust to be uniformly driven into the dust temporary storage bucket through the push plate. At the same time, the rotation of the push plate can also drive the crushed powder or dust on the filter plate into the dust temporary storage bucket, thereby preventing it from entering the container through the annular screening drum again. In summary, the present invention facilitates the stirring of scraps by utilizing the rotation of the crushing blade group, and the stirring facilitates the uniformity of scrap cleaning. While the crushing blade group rotates, the annular screening drum is driven to rotate intermittently, and the intermittent rotation of the annular screening drum facilitates further stirring of the scraps, thereby facilitating the equipment to further ensure the uniformity of scrap cleaning, and is convenient to use.

[0020] 2. After the scraps are cleaned up, the lower hopper of the present invention will rotate a full circle. At this time, the trigger rod fixedly connected to the side wall of the lower hopper will contact the trigger switch. The trigger switch will first cut off the power supply of the servo motor and then connect the power supply of the two electromagnetic plates when the lower hopper stops rotating. The mutual repulsion between the two electromagnetic plates allows the top column to slide upward in the inner cavity of the lower hopper. The sliding of the lower hopper allows the scraps that have been crushed and cleaned in the container to enter the scrap cleaning machine. By regularly cleaning the scraps in the container, not only can the cleaning effect of the equipment be guaranteed to the greatest extent, but also excessive crushing of the scraps can be avoided. The entire process does not require manual participation, which is beneficial to reducing the burden on the staff and facilitating the improvement of the overall practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a side view structural connection diagram of the processing box of the present invention;

[0024] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A;

[0025] Figure 4 It is a schematic diagram of the structural connection of the processing box of the present invention when viewed from above;

[0026] Figure 5 It is a schematic diagram of the internal structure connection of the processing box of the present invention;

[0027] Figure 6 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0028] Figure 7 It is a schematic diagram of the top view of the structural connection of the fixing plate of the present invention.

[0029] In the figure:

[0030] 1. Scrap cleaning machine;

[0031] 2. Processing box; 21. Feeding pipe; 22. Circular receiving plate;

[0032] 3. A funnel is provided on the cover; 31. A fan; 32. A filter plate;

[0033] 4. lower hopper; 41. annular screening cylinder; 42. feeding port; 43. annular connecting cylinder; 44. push plate; 45. temporary dust storage hopper; 46. servo motor; 47. first rotating rod; 48. second rotating rod; 49. belt transmission member; 491. first pulley; 492. second pulley; 493. transmission belt; 410. crushing sleeve; 411. crushing blade assembly;

[0034] 5. Top column; 51. Fixed plate; 52. Support spring; 53. Electromagnetic plate; 54. Trigger rod; 55. Trigger switch;

[0035] 6. Driven dial; 61. Driving groove wheel; 62. Fan-shaped dial plate. DETAILED DESCRIPTION

[0036] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0037] See also Figure 1 As shown, a textile scrap processing device includes a scrap cleaning machine 1. A scrap pretreatment mechanism is arranged on the top of the scrap cleaning machine 1. The scrap pretreatment mechanism is used for preliminary cleaning of the scraps, and the scrap cleaning machine 1 is used for further cleaning of the scraps.

[0038] See also Figure 1-2 As shown, the scrap pretreatment mechanism includes a processing box 2 fixed to the top of the scrap cleaning machine 1, the inner cavity of the processing box 2 is provided with a dust screening assembly, the dust screening assembly includes a lower hopper 4 rotatably connected to the inner cavity of the processing box 2, the lower hopper 4 corresponds to the feed pipe 21 of the scrap cleaning machine 1, a circular screening cylinder 41 is fixedly installed on the top of the lower hopper 4, a circular connecting cylinder 43 is fixedly installed on the top of the circular screening cylinder 41, the side wall of the circular connecting cylinder 43 is symmetrically penetrated with two feed ports 42, the side wall of the processing box 2 is symmetrically fixedly connected with two feed pipes 21, and the feed pipes 21 correspond to the feed ports 42.

[0039] See also Figure 2-4 As shown, a scrap crushing assembly is provided at the top of the inner wall of the processing box 2, and the scrap crushing assembly includes a first rotating rod 47 and a second rotating rod 48 which are respectively rotatably connected to the top of the inner wall of the processing box 2, and a crushing sleeve 410 is fixedly sleeved on the outer peripheral wall of the first rotating rod 47 and the second rotating rod 48, and a crushing blade group 411 is fixedly installed on the outer peripheral wall of the crushing sleeve 410;

[0040] A servo motor 46 is fixedly mounted on the top of the inner wall of the processing box 2 to drive the first rotating rod 47 to rotate;

[0041] A belt transmission member 49 is provided between the first rotating rod 47 and the second rotating rod 48. The belt transmission member 49 includes a first pulley 491 and a second pulley 492 which are respectively fixedly mounted on the outer peripheral walls of the first rotating rod 47 and the second rotating rod 48. The first pulley 491 and the second pulley 492 are connected to each other through a transmission belt 493.

[0042] See also Figure 4 As shown, the inner cavity of the annular connecting cylinder 43 is provided with a groove wheel assembly that makes the annular connecting cylinder 43 rotate intermittently, and the groove wheel assembly includes a driving groove wheel 61 fixedly sleeved on the outer peripheral wall of the first rotating rod 47, and the driving groove wheel 61 is located between the first belt pulley 491 and the crushing blade assembly 411. The inner cavity of the annular connecting cylinder 43 is fixedly installed with a driven dial 6 that matches the driving groove wheel 61. The six concave locking arcs of the driven dial 6 match the convex locking arcs of the driving groove wheel 61. A fan-shaped dial plate is fixedly installed on the side of the driving groove wheel 61 away from the first belt pulley 491 62, the inclined surface of the sector-shaped dial plate 62 abuts against the round pin at the bottom end of the driven dial 6, wherein the number of the round pins is three, and the active groove wheel 61 is rotated to make the sector-shaped dial plate 62 rotate synchronously, and when the active groove wheel 61 rotates, the convex locking arc of the active groove wheel 61 will be stuck by the concave locking arc of the driven dial 6, thereby keeping the driven dial 6 stationary, and with the further rotation of the active groove wheel 61, the inclined surface of the sector-shaped dial plate 62 abuts against the round pin at the bottom end of the driven dial 6, thereby rotating the driven dial 6, and the rotation of the active groove wheel 61 drives the driven dial 6 to rotate intermittently.

[0043] See also Figure 5 As shown, the side wall of the processing box 2 is provided with at least one screening acceleration mechanism, and the screening acceleration mechanism includes a filter plate 32 embedded in the side wall of the processing box 2, the aperture of the filter hole in the filter plate 32 is smaller than the aperture of the screening hole in the annular screening cylinder 41, and the side wall of the processing box 2 is fixedly installed with a covering funnel 3 for covering the filter plate 32, and the side wall of the processing box 2 is fixedly installed with a fan 31 connected with the covering funnel 3 through a support plate.

[0044] See also Figure 5 As shown, a circular receiving plate 22 is fixedly installed between the two inner walls of the processing box 2, and the circular receiving plate 22 is used to receive the crushed powder and dust screened by the circular screening drum 41. The side wall of the circular screening drum 41 is fixedly installed with a push plate 44 that fits with the inner wall of the processing box 2. The bottom end of the circular screening drum 41 is fixedly connected to a dust temporary storage bucket 45, and the bottom end of the dust temporary storage bucket 45 passes through the processing box 2 and extends to the bottom end of the processing box 2.

[0045] See also Figure 5-6As shown, the inner cavity of the lower hopper 4 is provided with a quantitative discharge assembly, which includes a top column 5 slidably connected to the inner cavity of the lower hopper 4, a fixed plate 51 corresponding to it is fixedly installed at the center of the bottom end of the lower hopper 4, a support spring 52 is fixedly installed between the fixed plate 51 and the top column 5, two electromagnetic plates 53 with the same magnetic properties are embedded and installed on the side facing the fixed plate 51 and the top column 5, a trigger rod 54 is fixedly installed on the outer peripheral wall of the lower hopper 4, a trigger switch 55 matching the trigger rod 54 is fixedly installed on the side wall of the dust temporary storage bucket 45, and the servo motor 46 and the two electromagnetic plates 53 are electrically connected to the trigger switch 55.

[0046] See also Figure 7 As shown, the fixing plate 51 and the two electromagnetic plates 53 are both in the shape of a ring.

[0047] When the present invention is in use, the scraps to be processed are put into a container composed of a lower hopper 4, an annular screening cylinder 41 and an annular connecting cylinder 43 through the feed pipes 21 on both sides of the processing box 2, and the servo motor 46 and the fan 31 are driven at the same time. The first rotating rod 47 is rotated by the servo motor 46. When the first rotating rod 47 rotates, the second rotating rod 48 is synchronously rotated through the transmission effect of the transmission belt 493. The synchronous rotation of the first rotating rod 47 and the second rotating rod 48 drives the crushing blade group 411 fixedly installed on the outer peripheral wall thereof to evenly crush the scraps in the container, stir them in the crushing process, and facilitate the adsorption of the stirred scraps by the adsorption of the fan 31, and facilitate the adsorption of the crushed powder or dust attached thereto to the filter plate 32;

[0048] When the first rotating rod 47 rotates, the active groove wheel 61 is driven to rotate. When the active groove wheel 61 rotates, the convex locking arc of the active groove wheel 61 is stuck to the concave locking arc of the driven dial 6, so that the driven dial 6 remains stationary. With the further rotation of the active groove wheel 61, the inclined surface of the sector dial plate 62 abuts against the round pin at the bottom end of the driven dial 6, so that the driven dial 6 rotates. The rotation of the active groove wheel 61 drives the driven dial 6 to rotate intermittently, and the intermittent rotation of the driven dial 6 drives the lower hopper 4, the annular screening cylinder 41 and the annular connecting cylinder 43 to rotate simultaneously. The intermittent rotation of the container facilitates intermittent shaking of the scraps in the container, and the shaking facilitates further discharge of the crushed powder or dust attached thereto through the screening holes in the annular screening cylinder 41 to the outside of the annular screening cylinder 41. At the same time, the rotation of the annular screening cylinder 41 facilitates the discharge of the crushed powder or dust to the dust temporary storage bucket 45 through the push plate 44. At the same time, the rotation of the push plate 44 can also drive the crushed powder or dust on the filter plate 32 into the dust temporary storage bucket 45, thereby preventing it from entering the container again through the annular screening cylinder 41.

[0049] When the container rotates completely for one circle, it indicates that the scraps in the container have been cleaned up. At this time, the trigger rod 54 fixedly connected to the side wall of the lower hopper 4 will contact the trigger switch 55. The trigger switch 55 will first cut off the power supply of the servo motor 46 and then turn on the power supply of the two electromagnetic plates 53 when the container stops rotating. The top column 5 slides upward in the inner cavity of the lower hopper 4 through the mutual repulsion between the two electromagnetic plates 53. The scraps in the container that have been crushed and cleaned can enter the scrap cleaning machine 1 through the sliding of the lower hopper 4. By regularly cleaning the scraps in the container, not only can the cleaning effect of the equipment be guaranteed to the greatest extent, but also excessive crushing of the scraps can be avoided.

[0050] Finally, the scrap cleaning machine 1 is driven to facilitate the cleaning of the scraps, and the secondary cleaning thereof facilitates further ensuring the cleaning effect of the scraps, thereby conveniently meeting the use needs of the staff.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A textile scrap processing device, comprising a scrap pre-processing mechanism for preliminary cleaning of the scrap, the scrap pre-processing mechanism comprising a processing box (2), the inner cavity of the processing box (2) is provided with a dust screening component, characterized in that: The dust screening component comprises a lower hopper (4) rotatably connected to the inner cavity of the processing box (2), a circular ring-shaped screening drum (41) is fixedly installed on the top of the lower hopper (4), and a crushing component for crushing the inner cavity scraps of the circular ring-shaped screening drum (41) is arranged at the top of the inner wall of the processing box (2), and the crushing component comprises a first rotating rod (47) and a second rotating rod (48) which are respectively rotatably connected to the top of the inner wall of the processing box (2), the first rotating rod (47) and the second rotating rod (48) are symmetrically arranged at the top of the inner wall of the processing box (2), and the outer peripheral walls of the first rotating rod (47) and the second rotating rod (48) are fixedly sleeved with a crushing blade group (41); A scrap cleaning machine (1) for further processing the scraps is arranged at the bottom end of the processing box (2).

2. A textile scrap processing device according to claim 1, characterized in that: A linkage member for causing the lower hopper (4) to rotate intermittently is arranged on the outer peripheral wall of the first rotating rod (47), and the linkage member comprises an active groove wheel (61) fixedly sleeved on the outer peripheral wall of the first rotating rod (47), and the active groove wheel (61) is located above the crushing blade group (41). A driven dial (6) matching with the active groove wheel (61) is fixedly installed on the top of the annular screening cylinder (41), and six concave locking arcs of the driven dial (6) match with the convex locking arc of the active groove wheel (61). A fan-shaped dial plate (62) is fixedly installed at the bottom end of the active groove wheel (61), and three round pins are fixedly installed at the bottom end of the driven dial (6), and the round pins are in contact with the inclined surface of the fan-shaped dial plate (62).

3. A textile scrap processing device according to claim 1, characterized in that: The side wall of the processing box (2) is provided with at least one screening acceleration mechanism, the screening acceleration mechanism comprising a filter plate (32) mounted on the side wall of the processing box (2) and corresponding to the annular screening cylinder (41), a covering funnel (3) for covering the filter plate (32) being fixedly mounted on the side wall of the filter plate (32), and a fan (31) connected to the covering funnel (3) being fixedly mounted on the side wall of the processing box (2).

4. A textile scrap processing device according to claim 3, characterized in that: The diameter of the filtering holes in the filtering plate (32) is smaller than the diameter of the screening holes in the annular screening cylinder (41).

5. A textile scrap processing device according to claim 1, characterized in that: A circular receiving plate (22) for receiving the crushed powder and dust sieved by the circular sieving cylinder (41) is fixedly installed between the two inner side walls of the processing box (2).

6. A textile scrap processing device according to claim 5, characterized in that: At least one push plate (44) that fits the inner wall of the processing box (2) is fixedly mounted on the outer peripheral wall of the annular screening cylinder (41), and a dust temporary storage bucket (45) is fixedly mounted on the bottom end of the annular receiving plate (22).

7. A textile scrap processing device according to claim 1, characterized in that: A belt transmission member (49) is provided between the first rotating rod (47) and the second rotating rod (48), and the belt transmission member (49) comprises a first belt pulley (491) and a second belt pulley (492) which are respectively fixedly sleeved on the outer peripheral walls of the first rotating rod (47) and the second rotating rod (48), and the first belt pulley (491) and the second belt pulley (492) are connected to each other through a transmission belt (493).

8. A textile scrap processing device according to claim 6, characterized in that: The inner cavity of the lower hopper (4) is provided with a quantitative discharge assembly for allowing the cleaned scraps to enter the scrap cleaning machine (1), and the quantitative discharge assembly includes a top column (5) vertically elastically slidably connected to the inner cavity of the lower hopper (4), a fixed plate (51) corresponding to the lower hopper (4) is fixedly installed at the bottom end of the processing box (2), and two electromagnetic plates (53) with the same magnetic properties are embedded and installed on the opposite sides of the fixed plate (51) and the top column (5), a trigger rod (54) is fixedly installed on the outer peripheral wall of the lower hopper (4), and a trigger switch (55) corresponding to the trigger rod (54) is fixedly installed on the side wall of the dust temporary storage bucket (45), and the two electromagnetic plates (53) are electrically connected to the trigger switch (55).

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