Cyclone separator for collecting lint

Abstract

The objective is to provide a cyclone separator that suppresses clogging of lint and debris in its internal space. [Solution] The cyclone separator 30 includes a first member and a second member (side wall member 34 and top plate member 36, and top plate member 36 and insertion member 51) that define an internal space 90 for separating lint Yw and air, and a joint (first joint 81 and second joint 82) to which the first member and the second member are joined to each other. A gap (first gap 84 and second gap 85) is formed between the internal space 90 and the joint, through which lint Yw can enter and exit.

Description

Technical Field

[0001] The present invention relates to a cyclone separator provided in a lint collection device for collecting lint For collecting thread scraps .

Background Art

[0002] Patent Document 1 discloses a lint collection device (the fiber waste collection device in Patent Document 1) that collects lint generated during yarn threading on textile machines such as false twist texturing machines. The lint collection device has a lint transfer pipe provided with a plurality of suction units for sucking lint, a lint collection unit for collecting lint, and a cyclone separator disposed between the lint transfer pipe and the lint collection unit for separating lint and air. The lint sucked together with air from the suction unit is transferred through the inside of the lint transfer pipe to the cyclone separator. Then, the lint and air are separated by the cyclone separator, the air is fruit discharged to the external space (hereinafter referred to as the external space), and the lint is discharged to the lint collection unit. Cyclone separator

Prior Art Documents

Patent Document

[0003]

Patent Document 1

Summary of Invention

Problem to be Solved by the Invention

[0004] In the above cyclone separator, an internal space for separating lint and air is defined by a plurality of members (for example, a side wall member and a top plate member covering the upper part of the side wall member). The respective members are joined to each other at predetermined positions. However, slight gaps are generated at the joints where the members are joined to each other. There is a risk that the lint sent from the lint transfer pipe to the internal space of the cyclone separator may get caught in these gaps. As a result, lint accumulates in the internal space of the cyclone separator, causing lint clogging, and consequently the lint cannot be collected properly.​

[0005] Therefore, the objective of the present invention is to suppress the clogging of lint in the internal space. For collecting thread scraps The objective is to provide a cyclone separator. [Means for solving the problem]

[0006] This invention For collecting thread scraps A cyclone separator is installed in a yarn waste collection device that collects yarn waste, and separates the yarn waste from the air. This device collects lint by discharging lint downwards and air upwards. A cyclone separator, with an internal space for separating lint and air. at least part of The invention comprises a first member and a second member defining a certain area, and a joint portion to which the first member and the second member are joined to each other, wherein a gap portion is formed between the internal space and the joint portion, allowing thread scraps to enter and exit.

[0007] According to the present invention, a gap is formed between the internal space and the joint, through which lint can enter and exit. Therefore, lint that enters the gap from the internal space cannot reach the joint without passing through the gap. Moreover, once lint enters the gap, it can also exit the gap and return to the internal space, effectively preventing lint from reaching the joint. Consequently, lint getting caught in the joint is suppressed. For collecting thread scraps This prevents lint from clogging the internal space of the cyclone separator.

[0008] This invention For collecting thread scraps In a cyclone separator, it is preferable that the gap portion has a shape that prevents lint from reaching the joint portion.

[0009] According to the present invention, the possibility that lint that enters the gap will be returned to the internal space without reaching the joint can be increased. Therefore, it is possible to more effectively avoid lint getting caught in the joint. For collecting thread scraps This further suppresses the clogging of lint and debris within the internal space of the cyclone separator.

[0010] This invention For collecting thread scraps In a cyclone separator, it is preferable that the gap portion has a labyrinth structure in which the path from the inlet on the internal space side of the gap portion to the joint portion bends along the way.

[0011] According to the present invention, thread debris that enters the gap cannot pass through the labyrinth structure and reach the joint unless it changes direction midway. In this way, the labyrinth structure obstructs the movement of the thread debris, further effectively suppressing its reaching of the joint.

[0012] This invention For collecting thread scraps In a cyclone separator, it is preferable that the labyrinth structure has a path that bends multiple times.

[0013] According to the present invention, thread debris that enters the gap cannot pass through the labyrinth structure and reach the joint unless its direction of travel changes multiple times. Therefore, it is possible to more reliably suppress the thread debris from reaching the joint.

[0014] This invention For collecting thread scraps In a cyclone separator, the first member is a side wall member having a cylindrical portion extending in the vertical direction and an enlarged diameter portion at the upper part of the cylindrical portion that expands radially outward from the cylindrical portion, the second member is a top plate member covering the upper part of the side wall member, the joint portion includes a first joint portion to which the enlarged diameter portion of the side wall member and the top plate member are joined, the gap portion includes a first gap portion formed between the internal space and the first joint portion, and preferably the first gap portion has the labyrinth structure.

[0015] According to the present invention, by forming a labyrinth structure in the first gap in which the path bends midway, the straight-line distance of the first gap from the internal space to the first joint can be shortened. This suppresses the widening of the diameter portion of the side wall member and the radial outward spreading of the top plate member, and consequently... For collecting thread scraps This will help reduce the size of the cyclone separator.

[0016] This invention For collecting thread scraps In the cyclone separator, the cylindrical portion is formed with a communication hole that communicates with the inside of a lint transfer pipe provided in the lint recovery device, the lint transfer pipe feeding lint to the internal space, and it is preferable that the first joint portion is provided radially outward of the inner surface of the cylindrical portion, on the lower side of the top plate member and on the upper side of the communication hole.

[0017] With the configuration according to the present invention For collecting thread scraps In the cyclone separator, most of the air sent to the internal space through the lint transfer pipe flows along the inner peripheral surface of the cylindrical portion. According to the present invention, the first joint portion is provided radially outward of the inner surface of the cylindrical portion, on the lower side of the top plate member and on the upper side of the communication hole. For this reason, the first joint portion does not obstruct the flow of air existing in the internal space. As a result, For collecting thread scraps the separation function of the cyclone separator for separating lint and air can be sufficiently ensured.

[0018] Of the present invention For collecting thread scraps The cyclone separator preferably includes a side wall member having a cylindrical portion extending in the vertical direction, and a top plate member having a top plate portion covering an upper portion of the side wall member and a protruding portion protruding upward from the top plate portion, wherein the first member is the top plate member, the second member is an air discharge portion disposed on the upper side of the top plate member and having an air discharge port for discharging air in the internal space to the outside, the joint portion includes a second joint portion where the protruding portion and the air discharge portion are joined, and the gap portion preferably includes a second gap portion formed between the internal space and the second joint portion.

[0019] With the configuration according to the present invention For collecting thread scraps In the cyclone separator, most of the air sent to the internal space flows along the inner peripheral surface of the cylindrical portion. According to the present invention, the second joint portion is a joint portion where the protruding portion of the top plate member and the air discharge portion are joined. Therefore, the second joint portion is provided on the upper side of the side wall member. For this reason, the second joint portion does not obstruct the flow of air existing in the internal space. As a result, For collecting thread scrapsThe function of separating lint and air by the cyclone separator can be sufficiently ensured.

[0020] Of the present invention For collecting thread scraps In the cyclone separator, it is preferable that the gap portion extends linearly from the inlet on the inner space side of the gap portion toward the joint portion.

[0021] According to the present invention, since the gap portion is linear, component design for forming the gap portion is relatively easy.

[0022] Of the present invention For collecting thread scraps The cyclone separator includes a side wall member having a cylindrical portion extending in the vertical direction, and a top plate member covering the upper portion of the side wall member, at least one of the first member and the second member is the top plate member, and the gap portion preferably extends in a direction intersecting the radial direction of the cylindrical portion.

[0023] In general, For collecting thread scraps In the cyclone separator, lint moves along the inner peripheral surface of the cylindrical portion, and the lint is less likely to move in the direction intersecting the radial direction of the cylindrical portion. According to the present invention, the gap portion extends in a direction intersecting the cylindrical portion, and lint is unlikely to enter the gap portion in the first place. Therefore, component design is relatively easy while suppressing lint from reaching the joint portion through the gap portion. [Brief Description of the Drawings]

[0024] [Figure 1] It is a side view showing the schematic configuration of the false twisting machine according to the present embodiment. [Figure 2] It is a schematic diagram showing the lint collecting device according to the present embodiment. [Figure 3] It is a perspective view of the cyclone separator. [Figure 4] It is a cross-sectional view of the cyclone separator. [Figure 5] It is an enlarged partial cross-sectional view showing the vicinity of the joint portion of the cyclone separator. [Figure 6] It is an enlarged partial cross-sectional view showing the vicinity of the joint portion of the cyclone separator according to the modified example. [Figure 7] This is an enlarged partial cross-sectional view of the vicinity of the joint of a cyclone separator according to another modified example. [Figure 8] This is an enlarged partial cross-sectional view of the vicinity of the joint of a cyclone separator according to yet another modified example. [Figure 9] This is a top view of the first gap portion relating to yet another modified example. [Modes for carrying out the invention]

[0025] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following description, the present invention will be described as follows. For collecting thread scraps The yarn waste collection device 1, which is equipped with a cyclone separator 30, will be described as being installed in a false twisting machine 101. In the following, the cyclone separator 30 for collecting lint will simply be referred to as the cyclone separator 30.

[0026] (Overall configuration of the false twisting machine) First, let's describe the false twisting machine 101. For the sake of explanation, the vertical, horizontal, and left-right directions in the false twisting machine 101 are as shown in Figure 1. The vertical direction is the vertical direction where gravity acts. The following explanation will use these directions as appropriate.

[0027] The false twisting machine 101 is configured as a textile machine that applies false twist to yarn Y made of thermoplastic synthetic fibers such as polyester or polyamide to impart crimp and produce a highly elastic processed yarn. The false twisting machine 101 includes a main machine base 102, a yarn feed creel 104, a first feed roller 108, a shifter guide 109, a first heating device 110, a cooling device 111, a false twisting device 106, a second feed roller 112, an interlacing nozzle 113, a second heating device 114, a third feed roller 115, an oiling roller 116, and a winding device 107.

[0028] The yarn path from the yarn supply creel 104 to the winding device 107 is arranged in the following order from upstream in the yarn travel direction: first feed roller 108, shifter guide 109, first heating device 110, cooling device 111, false twist device 106, second feed roller 112, interlacing nozzle 113, second heating device 114, third feed roller 115, and oiling roller 116. Each component will be described in detail below.

[0029] The main machine base 102 is installed so as to extend in the vertical direction. The yarn feeding creel 104 is positioned opposite the main machine base 102, with the work space 103 in between, and holds multiple yarn feeding packages 105. The work space 103 is a space for an operator to perform tasks such as threading on each device.

[0030] The first feed roller 108 is a roller for feeding the yarn Y from the upstream side to the downstream side in the yarn travel direction. Specifically, the first feed roller 108 is a roller for feeding the yarn Y supplied from the yarn creel 104 to the first heating device 110. The first feed roller 108 is located above the work space 103. Multiple first feed rollers 108 are arranged in a row in the front-to-back direction.

[0031] The shifter guide 109 is positioned between the first feed roller 108 and the first heating device 110 in the yarn travel direction. The shifter guide 109 is used to pass the yarn Y through the first heating device 110 and the cooling device 111 when the yarn Y is placed on the false twisting machine 101. The shifter guide 109 also prevents the twist applied to the yarn Y by the false twisting device 106 from propagating upstream of the shifter guide 109 in the yarn travel direction. Multiple shifter guides 109 are arranged in a row in the front-to-back direction.

[0032] The first heating device 110 is a device for heating the yarn Y that has been fed from the first feed roller 108. The first heating device 110 is located above the working space 103 and even higher than the first feed roller 108. Multiple first heating devices 110 are arranged in a row in the front-to-back direction.

[0033] The cooling device 111 is a device for cooling the yarn Y heated by the first heating device 110. The cooling device 111 is located on the main machine base 102 side of the first heating device 110, which is above the work space 103. The first heating device 110 and the cooling device 111 are arranged above the work space 103, extending diagonally upward while moving away from the main machine base 102. Multiple cooling devices 111 are arranged in a row in the front-to-back direction.

[0034] The false twisting device 106 is located above the main machine base 102. The false twisting device 106 performs false twisting on the yarn Y supplied from the yarn feed creel 104. The false twisting device 106 is, for example, a friction disc type twister.

[0035] The second feed roller 112 is a roller for feeding the yarn Y from the upstream side to the downstream side in the yarn travel direction. Specifically, the second feed roller 112 is a roller for feeding the yarn Y, which has been twisted by the false twisting device 106, to the interlacing nozzle 113 and the second heating device 114. The second feed roller 112 is located above the main machine base 102. Multiple second feed rollers 112 are arranged in a row in the front-to-back direction. The yarn feeding speed of the second feed roller 112 is faster than the yarn feeding speed of the first feed roller 108. Therefore, the yarn Y is stretched between the first feed roller 108 and the second feed roller 112.

[0036] The interlacing nozzle 113 is a device that imparts entanglement to the yarn Y by injecting air into it. The interlacing nozzle 113 is located above the main machine base 102 and below the second feed roller 112. Multiple interlacing nozzles 113 are arranged in a row in the front-to-back direction.

[0037] The second heating device 114 is a device for heating the yarn Y that has been entangled by the interlacing nozzle 113. The second heating device 114 is mounted on the main machine base 102 and is located behind the winding device 107 when viewed from the work space 103. The second heating device 114 extends in the vertical direction.

[0038] The third feed roller 115 is a roller for feeding the yarn Y from the upstream side to the downstream side in the yarn travel direction. Specifically, the third feed roller 115 is a roller for feeding the yarn Y, heated by the second heating device 114, to the winding device 107 via the oiling roller 116. The third feed roller 115 is located below the second heating device 114. Multiple third feed rollers 115 are arranged in a row in the front-to-back direction. The yarn feeding speed of the third feed roller 115 is slower than the yarn feeding speed of the second feed roller 112. Therefore, the yarn Y is Second feed roller 112 and third feed roller 115 It relaxes between these two states.

[0039] The oiling roller 116 is a roller for applying oil to the yarn Y. The oiling roller 116 is, for example, a driven roller that does not have a power source. Multiple oiling rollers 116 are arranged in a row in the front-to-back direction.

[0040] The winding device 107 is a device for winding the false-twisted yarn Y, which has been false-twisted in the false-twist device 106, onto a bobbin (not shown) to form a package 117. The winding device 107 is installed on the main machine base 102. The winding device 107 is installed in four stages in the vertical direction. Furthermore, multiple winding devices 107 are installed in a row in the front-to-back direction at each stage.

[0041] With the devices laid out in this manner, the thread path from the thread supply creel 104 to the winding device 107 is formed to surround the work space 103.

[0042] In the false twisting machine 101 configured as described above, the yarn Y supplied from the yarn supply creel 104 is passed through the aforementioned devices and wound onto the winding device 107 to form the package 117. A detailed explanation follows below.

[0043] The yarn Y supplied from the yarn feed creel 104 is stretched between the first feed roller 108 and the second feed roller 112. The stretched yarn Y is then twisted by the false twisting device 106 and fed. The twist formed by the false twisting device 106 propagates to the shifter guide 109. The yarn Y, which has been stretched and twisted, is heated by the first heating device 110 and then cooled by the cooling device 111 to fix the twist. After passing through the false twisting device 106, the yarn Y is untwisted before reaching the second feed roller 112.

[0044] The yarn Y, which has been stretched and false-twisted in this manner, has appropriate entanglements formed in the interlacing nozzle 113, thereby providing it with bundling properties. Subsequently, the yarn Y is heat-treated by the second heating device 114 while being loosened between the second feed roller 112 and the third feed roller 115. Then, the yarn Y is wound onto a bobbin (not shown) by the winding device 107 via the oiling roller 116 to form a package 117. The fully wound package 117 is removed from the winding device 107 by an operator. A new bobbin is then attached to the winding device 107 by the operator, and the winding process onto the bobbin is resumed. In this way, the package 117 is replaced.

[0045] The yarn waste collection device 1 of this embodiment is installed and used in the false twisting machine 101 described above. The yarn waste collection device 1 of this embodiment will be described below.

[0046] (Thread waste collection device) The yarn waste collection device 1 will be described below with reference to Figure 2. Figure 2 is a schematic diagram showing the yarn waste collection device 1 according to this embodiment. The yarn waste collection device 1 is a device that collects yarn waste generated when threading yarn onto the false twisting machine 101, etc. Hereinafter, the yarn waste collected by the yarn waste collection device 1 will be referred to as yarn waste Yw (see Figure 3). In Figure 3, a relatively long piece of yarn waste (for example, 900 m of yarn waste) is shown. However, in this embodiment, yarn waste Yw also includes relatively short pieces of yarn, and aggregates of yarn waste in which two or more pieces of yarn are entangled with each other. As shown in Figure 2, the yarn waste collection device 1 includes a plurality of yarn waste transfer pipes 11 (four yarn waste transfer pipes 11a to 11d in this embodiment), one yarn waste collection unit 13, and a plurality of cyclone separators 30 (four cyclone separators 30a to 30d in this embodiment). One yarn waste collection unit 13 is provided for each of the plurality of yarn waste transfer pipes 11. Multiple cyclone separators 30 are provided, one for each of the multiple lint transfer pipes 11.

[0047] (Lint transfer piping) Next, with reference to Figure 2, the lint transfer piping 11 will be described in detail below. As shown in Figure 2, the lint transfer piping 11 has a main pipe 14 and a plurality of suction sections 15 that suck in the lint Yw. The main pipe 14 is a hollow, cylindrical pipe. The lint Yw sucked in from the suction sections 15 is transferred inside the main pipe 14. In this embodiment, four lint transfer pipes 11 are provided as described above.

[0048] The main pipes 14 of the four waste yarn transfer pipes 11a to 11d are positioned to extend in the front-to-back direction at positions corresponding to each of the first to fourth stages of the winding device 107 (see Figures 1 and 2). Specifically, the main pipe 14 of waste yarn transfer pipe 11a is positioned to extend in the front-to-back direction at a position corresponding to the lowest stage, the first stage of the winding device 107. The main pipe 14 of waste yarn transfer pipe 11b is positioned to extend in the front-to-back direction at a position corresponding to the second stage from the bottom of the winding device 107. The main pipe 14 of waste yarn transfer pipe 11c is positioned to extend in the front-to-back direction at a position corresponding to the third stage from the bottom of the winding device 107. The main pipe 14 of waste yarn transfer pipe 11d is positioned to extend in the front-to-back direction at a position corresponding to the highest stage, the fourth stage of the winding device 107. Note that the position of the main pipe 14 corresponding to the winding device 107 is, for example, slightly to the right and below the winding device 107 which is arranged in a row in the front-to-back direction. However, the location where the main piping 14 is placed is not limited to this location.

[0049] Each main pipe 14 has one end extending in the front-rear direction (the rear end shown in Figure 2) closed, and the other end (the front end shown in Figure 2) is connected to the cyclone separator 30.

[0050] As shown in Figure 2, multiple suction units 15 are provided in a row along the front-to-back direction, which is the longitudinal direction of the main piping 14. Each suction unit 15 is positioned to correspond to a plurality of winding devices 107 arranged in the front-to-back direction. As shown in Figure 2, the suction units 15 are connected to the main piping 14 via suction pipes 16. The suction units 15 are configured to be able to suck up lint Yw by compressed air injected from a nozzle (not shown) provided in the suction pipe 16. The lint Yw sucked in from the suction units 15 along with the air is sent to the main piping 14 through the suction pipe 16.

[0051] (Thread waste collection section) The yarn waste collection unit 13 is a container for collecting yarn waste Yw transferred from the yarn waste transfer pipe 11. The yarn waste collection unit 13 is connected to the yarn waste discharge sections 34d (described later) of the four cyclone separators 30a to 30d. As shown in Figure 2, in this embodiment, one yarn waste collection unit 13 is provided for each of the four yarn waste transfer pipes 11a to 11d, but this is not limited to this configuration. For example, one yarn waste collection unit 13 may be provided for each of the one yarn waste transfer pipes 11.

[0052] (Cyclone separator) Next, the cyclone separator 30 will be described with reference to Figures 2 to 5. Figure 3 is a perspective view of the cyclone separator 30. Figure 4 is a cross-sectional view of the cyclone separator 30. Figure 5 is an enlarged partial cross-sectional view of the vicinity of the joint (described later) of the cyclone separator 30.

[0053] The cyclone separator 30 has the function of separating air from the yarn waste Yw that has been sent through the main pipe 14 of the yarn waste transfer pipe 11, and discharging the yarn waste Yw to the yarn waste collection unit 13. In this embodiment, four cyclone separators 30 are arranged. As shown in Figure 2, the four cyclone separators 30a to 30d are arranged between each of the four yarn waste transfer pipes 11a to 11d and the yarn waste collection unit 13.

[0054] As shown in Figures 3 and 4, the cyclone separator 30 includes a separation unit 32 for separating lint Yw from air, and an air discharge unit 50 for discharging air to the outside of the cyclone separator 30.

[0055] (separation part) First, let's explain the separation unit 32. The separation unit 32 separates air from the yarn waste Yw sent from the yarn waste transfer pipe 11. 。As shown in Figure 4, the separation section 32 includes a side wall member 34 and a top plate member 36 that covers the upper part of the side wall member 34. The side wall member 34 and the top plate member 36 are made of resin, for example. The side wall member 34 includes a cylindrical portion 34a, an enlarged diameter portion 34b that expands radially outward from the cylindrical portion 34a at the upper part of the cylindrical portion 34a, a tapered portion 34c connected to the lower end of the cylindrical portion 34a and inclined so that the diameter of the cylinder tapers, and a cylindrical lint discharge portion 34d connected to the lower end of the tapered portion 34c.

[0056] The cylindrical portion 34a has an axis that extends in approximately the same direction as the vertical direction. The cylindrical portion 34a is cylindrical in shape, extending in the vertical direction and having an open upper and lower end. The cylindrical portion 34a is also in communication with the main pipe 14 of the lint transfer pipe 11. More specifically, as shown in Figure 5, a communication hole 39 is formed slightly below the upper end of the cylindrical portion 34a. The communication hole 39 connects the inside of the main pipe 14 of the lint transfer pipe 11 to the inside of the cylindrical portion 34a. As shown in Figure 3, the other end of the main pipe 14 (the front end shown in Figure 2) is in communication with the cylindrical portion 34a, along the circumferential direction of the inner circumferential wall 35 of the cylindrical portion 34a.

[0057] The enlarged diameter portion 34b is a portion that expands straight outwards radially from the upper end of the cylindrical portion 34a. The enlarged diameter portion 34b is the portion that is joined to the top plate member 36. The first joint portion 81 to which the enlarged diameter portion 34b and the top plate member 36 are joined will be described later. Note that the enlarged diameter portion 34b is omitted in Figure 3.

[0058] The upper end of the tapered portion 34c is connected to the cylindrical portion 34a. The lower end of the tapered portion 34c is connected to the lint discharge portion 34d, which will be described later. The inner diameter of the upper end of the tapered portion 34c is approximately the same as the inner diameter of the cylindrical portion 34a. The inner diameter of the lower end of the tapered portion 34c is smaller than the inner diameter of the upper end. The tapered portion 34c has a hollow, frustoconical shape that tapers from the upper end to the lower end. The upper and lower ends of the tapered portion 34c are open. Furthermore, the tapered portion 34c and the cylindrical portion 34a are integrally formed. In other words, the tapered portion 34c and the cylindrical portion 34a do not have any joints that connect them to each other.

[0059] The lint discharge portion 34d is the portion that discharges lint Yw to the lint collection portion 13. The lint discharge portion 34d has an axis that extends in approximately the same direction as the vertical direction and is cylindrical with an open upper and lower end. The upper end of the lint discharge portion 34d is connected to the lower end of the tapered portion 34c. The lower end of the lint discharge portion 34d is connected to the lint collection portion 13. The inner diameter of the lint discharge portion 34d is approximately the same as the inner diameter of the lower end of the tapered portion 34c. In this embodiment, each part of the side wall member 34 (cylindrical portion 34a, enlarged diameter portion 34b, tapered portion 34c, and lint discharge portion 34d) is integrally formed.

[0060] As shown in Figures 3 and 4, the top plate member 36 has a disc-shaped top plate portion 36a that covers the upper part of the side wall member 34, and a protruding portion 36b that protrudes upward near the center of the top plate portion 36a. When viewed from above, the top plate portion 36a is donut-shaped with a hole in the center of the disc. The diameter (outer diameter) of the top plate portion 36a is larger than the inner diameter of the cylindrical portion 34a. The top plate portion 36a is the part that is joined to the enlarged diameter portion 34b. The first joint portion 81 to which the enlarged diameter portion 34b and the top plate portion 36a are joined will be described later. The protruding portion 36b is the part that protrudes upward from near the center of the top plate portion 36a. As shown in Figures 3 and 4, the protruding portion 36b has a circular opening 38 that is coaxial with the cylindrical portion 34a. That is, the protruding portion 36b is cylindrical and coaxial with the cylindrical portion 34a. The opening 38 formed in the protruding portion 36b is configured to allow insertion of the internal member 51 of the air discharge portion 50, which will be described later. A through hole 37 is formed in the upper part of the protruding portion 36b, through which a bolt 83, which will be described later, can pass (see Figure 5).

[0061] (Air discharge section) Next, the air discharge section 50 will be described. The air discharge section 50 discharges the air separated from the lint Yw in the separation section 32 to the outside of the cyclone separator 30. The air discharge section 50 is located above the separation section 32. As shown in Figures 3 and 4, the air discharge section 50 includes an insertion member 51, a lint cover 52, and a discharge noise suppression section 53.

[0062] The insertion member 51 is configured to be insertable into and removable from an opening 38 formed in the protruding portion 36b of the top plate member 36 of the separation section 32. The insertion member 51 is cylindrical and coaxial with the cylindrical portion 34a of the separation section 32. As shown in Figure 4, an air outlet 55 is formed on the inside of the insertion member 51. The outer diameter of the insertion member 51 is slightly smaller than the inner diameter of the opening 38. A through hole 58 is formed in the upper part of the insertion member 51 through which a bolt 83, which will be described later, can pass (see Figure 5). The insertion member 51 and the protruding portion 36b of the top plate member 36 are joined to each other. The second joint 82, to which the insertion member 51 and the protruding portion 36b are joined to each other, will be described in detail later.

[0063] The lint cover 52 is a component that prevents lint Yw from being discharged from the air discharge section 50 to the outside of the cyclone separator 30. As shown in Figure 4, the lint cover 52 is formed at the lower end of the insertion member 51 so as to cover the air discharge port 55. The lint cover 52 is a porous disc member with the thickness direction in the vertical direction. Multiple holes 56 formed in the lint cover 52 penetrate the lint cover 52 in the vertical direction. Air separated from the lint Yw in the separation section 32 can pass through the holes 56. On the other hand, the lint Yw is prevented from being discharged to the outside by the portion of the lint cover 52 where holes 56 are not formed. In this embodiment, the insertion member 51 and the lint cover 52 are integrally formed. However, the insertion member 51 and the lint cover 52 may be separate components. Also, in this embodiment, the lower surface of the lint cover 52 is on the same plane as the lower surface of the top plate member 36. Note that the description of the lint cover 52 is omitted in Figure 3.

[0064] The exhaust noise suppression unit 53 is for suppressing the exhaust noise generated when air is discharged to the outside of the cyclone separator 30. As shown in Figure 4, the exhaust noise suppression unit 53 is connected to the upper end of the insertion member 51. The exhaust noise suppression unit 53 is cylindrical and coaxial with the insertion member 51. The inner diameter of the exhaust noise suppression unit 53 is larger than the inner diameter of the insertion member 51. The exhaust noise suppression unit 53 has a plurality of pleated members 57 that protrude radially inward from the inner wall diagonally upward. The detailed principle of how the exhaust noise suppression unit 53 suppresses exhaust noise will not be explained here, but the presence of the pleated members 57 suppresses the exhaust noise generated from the air passing through the exhaust noise suppression unit 53. Note that the pleated members 57 are not shown in Figure 3.

[0065] In the cyclone separator 30 described above, as shown in Figure 4, an internal space 90 is defined by the side wall member 34 and top plate member 36 of the separation section 32 and the insertion member 51 of the air discharge section 50 to separate the lint Yw from the air.

[0066] In the cyclone separator 30 configured as described above, lint Yw and air are separated as follows. First, the lint Yw, along with the air, is sent from the main piping 14 to the cylindrical portion 34a of the separation section 32. The lint Yw sent to the cylindrical portion 34a is moved downward while rotating circumferentially along the inner circumferential wall 35 of the cylindrical portion 34a by the action of centrifugal force, i.e., centrifugal separation. The lint Yw that has moved downward inside the cylindrical portion 34a is further moved along the inner wall 45 of the tapered portion 34c towards the lint discharge section 34d. Then, the lint Yw is discharged from the lint discharge section 34d to the lint recovery section 13. During the process in which the lint Yw moves along the inner circumferential wall 35 of the cylindrical portion 34a and the inner circumferential wall 35 of the tapered portion 34c, the air is separated from the lint Yw and discharged to the outside from the air discharge section 50. In this way, the lint Yw and air are separated in the cyclone separator 30. It should be noted that the cyclone separator 30 does not completely separate the lint Yw from the air, and air is still present in the lint Yw that heads toward the lint discharge section 34d. Therefore, not only the lint Yw is discharged from the lint discharge section 34d, but also the air that was not discharged from the air discharge section 50.

[0067] As described above, in this embodiment, the cyclone separator 30 has an internal space 90 defined by a side wall member 34, a top plate member 36, and an insertion member 51. The side wall member 34 and the top plate member 36 are joined to each other, and the top plate member 36 and the insertion member 51 are joined to each other. A detailed explanation follows with reference to Figure 5. Figure 5 is an enlarged partial cross-sectional view of the vicinity of two joints of the cyclone separator 30. The upper part of the enlarged diameter portion 34b of the side wall member 34 and the lower part of the top plate portion 36a of the top plate member 36 are joined to each other by ultrasonic welding. For example, the lower part of the top plate portion 36a and the upper part of the enlarged diameter portion 34b are joined around the entire circumference. Hereinafter, the joint between the side wall member 34 and the top plate member 36 will be referred to as the first joint 81. As shown in Figure 5, the first joint 81 is located radially outside the inner circumferential wall 35 (inner surface of the present invention) of the cylindrical portion 34a, and is provided below the top plate member 36 and above the communication hole 39. Furthermore, the protruding portion 36b of the top plate member 36 and the insertion member 51 are joined by a bolt 83. Specifically, with the insertion member 51 inserted into the opening 38 formed in the protruding portion 36b, and with the through hole 37 of the protruding portion 36b and the through hole 58 of the insertion member 51 aligned, the protruding portion 36b and the insertion member 51 are joined by passing the bolt 83 through the through hole 37 and the through hole 58. Hereinafter, the joint between the top plate member 36 and the insertion member 51 will be referred to as the second joint 82. In this embodiment, the combination of the side wall member 34 and the top plate member 36 corresponds to the combination of the first and second members of the present invention. Similarly, the combination of the top plate member 36 and the insertion member 51 corresponds to the combination of the first and second members of the present invention.

[0068] However, small gaps are created in the first joint 81 and the second joint 82 described above. There is a risk that the lint Yw sent from the lint transfer piping 11 to the internal space 90 of the cyclone separator 30 may get stuck in these gaps. If this happens, the lint Yw will accumulate in the internal space 90 of the cyclone separator 30, causing a blockage of lint Yw, and as a result, the lint Yw cannot be properly collected. Therefore, in this embodiment, a configuration is adopted to suppress the blockage of lint Yw in the internal space 90. This will be explained in detail below.

[0069] (First gap) As shown in Figure 5, in the cyclone separator 30 of this embodiment, a first gap 84 is formed between the internal space 90 and the first joint 81, through which lint Yw can enter and exit. The first gap 84 is a space that communicates with the internal space 90 and is enclosed by the lower part of the top plate portion 36a of the top plate member 36, the upper part of the enlarged diameter portion 34b of the side wall member 34, and the first joint 81. The width of the first gap 84 when viewed from a direction perpendicular to the vertical direction (for example, the front-to-back direction) is preferably, for example, 0.5 to 3.0 mm. The width of the first gap 84 refers to the width of the gap between the top plate portion 36a and the enlarged diameter portion 34b.

[0070] The first gap 84 has a shape that prevents lint Yw from reaching the first joint 81. Specifically, as shown in Figure 5, the first gap 84 has a labyrinth structure in which the path from the entrance 84a on the internal space 90 side of the first gap 84 to the first joint 81 bends along the way. As shown in Figure 5, the labyrinth structure of this embodiment has the path of the first gap 84 bend three times. In other words, a protruding convex portion 91 is formed on the lower part of the top plate portion 36a that defines the first gap 84, and a recess 92 corresponding to the convex portion 91 is formed on the upper part of the enlarged diameter portion 34b that defines the first gap 84. The convex portion 91 is formed around the entire circumference of the lower part of the top plate portion 36a. The recess 92 is formed around the entire circumference of the upper part of the enlarged diameter portion 34b. The formation of the convex portion 91 and the concave portion 92 creates a labyrinth structure in the first gap portion 84 in which the path from the entrance 84a to the first joint portion 81 bends three times.

[0071] (Second gap) As shown in Figure 5, in the cyclone separator 30 of this embodiment, a second gap 85 is formed between the internal space 90 and the second joint 82, through which lint Yw can enter and exit. The second gap 85 is a space that communicates with the internal space 90 and is enclosed by the inner circumferential surface of the protruding portion 36b of the top plate member 36 and the outer circumferential surface of the insertion member 51. The width of the second gap 85 when viewed from a direction perpendicular to the vertical direction (for example, the front-to-back direction) is preferably, for example, 0.5 to 3.0 mm. The width of the second gap 85 refers to the width of the gap between the protruding portion 36b and the insertion member 51.

[0072] The second gap 85 has a shape that prevents lint Yw from reaching the second joint 82. Specifically, as shown in Figure 5, it extends linearly from the inlet 85a on the internal space 90 side toward the second joint 82. In this embodiment, the second gap 85 extends vertically perpendicular to the radial direction of the cylindrical portion 34a of the side wall member 34. The vertical length of the second gap 85 is preferably 20 to 40 mm. This suppresses the lint Yw from reaching the second joint 82 while preventing the height dimension of the cyclone separator 30 from increasing.

[0073] (effect) The cyclone separator 30 of this embodiment has an internal space 90 that separates lint Yw and air. at least part ofThe present invention includes a first member and a second member that define the internal space 90 (the combination of the side wall member 34 and the top plate member 36, and the combination of the top plate member 36 and the insertion member 51 correspond to the first member and the second member of the present invention), and a joint portion (first joint portion 81 and second joint portion 82) to which the first member and the second member are joined to each other. A gap portion (first gap portion 84 and second gap portion 85) is formed between the internal space 90 and the joint portion, through which lint Yw can enter and exit. In the following, when referring to both the first joint portion 81 and the second joint portion 82, they will simply be referred to as the joint portion. Also, in the following, when referring to both the first gap portion 84 and the second gap portion 85, they will simply be referred to as the gap portion. According to this embodiment, lint Yw that enters the gap portion from the internal space 90 cannot reach the joint portion without passing through the gap portion. Furthermore, once the lint Yw enters the gap, it can exit the gap and return to the internal space 90, effectively preventing the lint Yw from reaching the joint. Therefore, the lint Yw is prevented from getting caught in the joint, and the clogging of the lint Yw in the internal space 90 of the cyclone separator 30 is prevented.

[0074] Furthermore, in the cyclone separator 30 of this embodiment, the gap portion has a shape that prevents lint Yw from reaching the joint portion. According to this embodiment, the possibility that lint Yw that enters the gap portion will be returned to the internal space 90 without reaching the joint portion can be increased. Therefore, it is possible to more effectively avoid lint Yw getting stuck in the joint portion, and to further suppress clogging of the internal space 90 of the cyclone separator 30 with lint Yw.

[0075] Furthermore, in the cyclone separator 30 of this embodiment, the first gap 84 has a labyrinth structure in which the path from the inlet 84a on the internal space 90 side of the first gap 84 to the first joint 81 bends along the way. According to this embodiment, thread debris Yw that enters the first gap 84 cannot pass through the labyrinth structure and reach the first joint 81 unless it changes direction along the way. In this way, the progress of the thread debris Yw is hindered by the labyrinth structure, which further effectively suppresses the thread debris Yw from reaching the first joint 81.

[0076] Furthermore, in the cyclone separator 30 of this embodiment, the labyrinth structure has a path through the first gap 84 that bends multiple times (three times in this embodiment). According to this embodiment, the direction of travel of the lint Yw that enters the first gap 84 cannot pass through the labyrinth structure and reach the first joint 81 unless the direction of travel changes multiple times. Therefore, it is possible to more reliably suppress the lint Yw from reaching the first joint 81.

[0077] Furthermore, in the cyclone separator 30 of this embodiment, the first member is a side wall member 34 having a cylindrical portion 34a extending in the vertical direction and an enlarged diameter portion 34b that expands radially outward from the cylindrical portion 34a at the upper part of the cylindrical portion 34a. The second member is a top plate member 36 that covers the upper part of the side wall member 34. The joint includes a first joint portion 81 to which the enlarged diameter portion 34b of the side wall member 34 and the top plate member 36 are joined. The gap includes a first gap portion 84 formed between the internal space 90 and the first joint portion 81. The first gap portion 84 has a labyrinth structure. According to this embodiment, by forming a labyrinth structure in the first gap portion 84 in which the path bends along the way, the straight-line distance of the first gap portion 84 from the internal space 90 to the first joint portion 81 can be shortened. This suppresses the radial outward expansion of the enlarged diameter portion 34b of the side wall member 34 and the top plate member 36, which in turn leads to a reduction in the dimensions of the cyclone separator 30. Furthermore, the above configuration provides the following effects. Since the lint Yw present in the internal space 90 moves along the inner circumferential surface of the cylindrical portion 34a, conventionally, the lint Yw tended to get stuck in the first joint portion 81. Therefore, by providing a first gap portion 84 having a labyrinth structure between the internal space 90 and the first joint portion 81, it is possible to effectively suppress the lint Yw from getting stuck in the first joint portion 81.

[0078] Furthermore, in the cyclone separator 30 of this embodiment, a communication hole 39 is formed in the cylindrical portion 34a that communicates with the inside of the main pipe 14 of the lint transfer pipe 11. The first joint portion 81 is located radially outside the inner circumferential wall 35 of the cylindrical portion 34a, below the top plate member 36 and above the communication hole 39. In a cyclone separator 30 configured as in this embodiment, most of the air sent to the internal space 90 through the lint transfer pipe 11 flows along the inner circumferential surface of the cylindrical portion 34a. According to this embodiment, the first joint portion 81 is located radially outside the inner circumferential wall 35 of the cylindrical portion 34a, below the top plate member 36 and above the communication hole 39. Therefore, the first joint portion 81 does not obstruct the airflow present in the internal space 90. This ensures that the cyclone separator 30 can adequately separate lint Yw from air.

[0079] Furthermore, in the cyclone separator 30 of this embodiment, the first member is a top plate member 36 having a top plate portion 36a that covers the upper part of the side wall member 34 and a protruding portion 36b that protrudes upward from the top plate portion 36a. The second member is an air discharge section 50 positioned above the top plate member 36 and having an air discharge port 55 for discharging air from the internal space 90 to the outside. The joint includes a second joint 82 to which the protruding portion 36b and the air discharge section 50 (more precisely, the internal insertion member 51 of the air discharge section 50) are joined. The gap includes a second gap 85 formed between the internal space 90 and the second joint 82. In a cyclone separator 30 configured as in this embodiment, most of the air sent to the internal space 90 flows along the inner circumferential surface of the cylindrical portion 34a. According to this embodiment, the second joint 82 is a joint to which the protruding portion 36b of the top plate member 36 and the air discharge section 50 are joined. Therefore, the second joint 82 is provided on the upper side of the side wall member 34. As a result, the second joint 82 does not obstruct the airflow present in the internal space 90. This ensures that the cyclone separator 30 can adequately separate the lint Yw from the air.

[0080] Furthermore, in the cyclone separator 30 of this embodiment, the second gap portion 85 extends linearly from the inlet 85a on the internal space 90 side of the second gap portion 85 toward the second joint portion 82. According to this embodiment, because the second gap portion 85 is linear, the design of the components for forming the second gap portion 85 becomes relatively easy.

[0081] Furthermore, the cyclone separator 30 of this embodiment includes a side wall member 34 having a cylindrical portion 34a and a top plate member 36 covering the upper part of the side wall member 34. At least one of the first member and the second member is the top plate member 36. The second gap portion 85 extends in a direction intersecting the radial direction of the cylindrical portion 34a. Generally, in a cyclone separator 30, lint Yw moves along the inner circumferential surface of the cylindrical portion 34a, and lint Yw is less likely to move in a direction intersecting the radial direction of the cylindrical portion 34a. According to this embodiment, the second gap portion 85 extends in a direction intersecting the cylindrical portion 34a, making it difficult for lint Yw to enter in the first place. Therefore, while suppressing lint Yw from passing through the second gap portion 85 to reach the second joint portion 82, the component design becomes relatively easy.

[0082] (modified version) Modified examples of the above-described embodiments are described below. However, components having the same configuration as the above-described embodiments are denoted by the same reference numerals and their descriptions are omitted as appropriate.

[0083] (1) In the above embodiment, as shown in Figure 5, a linearly extending second gap 85 is formed between the second joint 82, to which the protruding portion 36b of the top plate member 36 and the insertion member 51 are joined, and the internal space 90. However, the second gap 85 is not limited to this configuration. Hereinafter, a modified example will be specifically described with reference to Figure 6. Figure 6 is an enlarged partial cross-sectional view of the vicinity of the joint of the cyclone separator 30 according to a modified example.

[0084] As shown in Figure 6, an internal extension 93 is formed at the lower part of the protruding portion 136b of the top plate member 136, extending radially inward from the cylindrical portion 34a. The internal extension 93 is bent upward midway. The top plate portion 136a of the top plate member 136 has the same shape as the top plate portion 36a of the top plate member 36 in the above embodiment. The insert member 151 has a recess 94 that is recessed downward in accordance with the upward bend of the internal extension 93. The internal extension 93 is formed around the entire circumference of the protruding portion 36b in a plan view. The recess 94 is formed around the entire circumference of the insert member 151 in a plan view. The protruding portion 136b of the top plate member 136 and the insert member 151 are joined by bolts 83. Specifically, with the insertion member 151 inserted into the opening (not shown) formed in the protruding portion 136b (as shown in Figure 6), and with the through hole 137 of the protruding portion 136b and the through hole 158 of the insertion member 151 aligned, the bolt 83 is passed through the through holes 137 and 158 to join the protruding portion 136b and the insertion member 151. Hereinafter, the joint between the top plate member 136 and the insertion member 151 will be referred to as the second joint 182.

[0085] As shown in Figure 6, a second gap 185 is formed between the internal space 90 and the second joint 182, through which thread scraps Yw can enter and exit. The second gap 185 has a labyrinth structure in which the path from the entrance 185a on the internal space 90 side to the second joint 182 bends along the way. As shown in Figure 6, the labyrinth structure has the path of the second gap 185 bend four times. In other words, the formation of the inward extension 93 and recess 94 described above creates a labyrinth structure in the second gap 185 in which the path from the entrance 185a to the second joint 182 bends four times. With this configuration, the direction of travel of thread scraps Yw that have entered the second gap 185 must change multiple times in order to pass through the labyrinth structure and reach the second joint 182. Therefore, it is possible to more reliably suppress the thread scraps Yw from reaching the second joint 182.

[0086] (2) In the above embodiment, the first gap 84 has a labyrinth structure and the second gap 85 has a linear shape. However, the configuration of the first gap 84 and the second gap 85 is not limited to this. The first gap 84 only needs to have a shape that prevents lint Yw from reaching the first joint 81. Specifically, the first gap 84 may have, for example, a curved shape. Or, the first gap 84 may have yet another shape. Two modified first gaps (first gap 184 and first gap 284) are shown in Figures 7 and 8. Figures 7 and 8 are enlarged partial cross-sectional views of the vicinity of the joint of the cyclone separator 30 according to the modified example. For example, as shown in Figure 7, the first gap 184 may have a configuration such that the width of the gap narrows as you move from the inlet 184a on the internal space 90 side toward the first joint 81. More specifically, when viewed from a direction perpendicular to the vertical direction, a stepped structure is formed on the upper part of the enlarged diameter portion 134b that defines the first gap portion 184. This stepped structure is positioned higher as it approaches the first joint portion 81. The stepped structure may also be formed on the lower surface of the top plate portion 36a that defines the first gap portion 184. Alternatively, for example, as shown in Figure 8, the first gap portion 284 may have a space into which lint Yw can get lost. More specifically, when viewed from a direction perpendicular to the vertical direction, two upwardly projecting protrusions 191 are formed on the upper part of the enlarged diameter portion 234b that defines the first gap portion 284. By providing the two protrusions 191, a recessed space is created above the enlarged diameter portion 234b that defines the first gap portion 284. This recessed space becomes a space into which lint Yw can get lost. There may be three or more protrusions instead of two. Furthermore, a protrusion projecting downwards may be formed on the lower surface of the top plate portion 36a that defines the first gap portion 284. Similarly, the second gap portion 85 should have a shape that prevents lint Yw from reaching the second joint portion 82. Specifically, it is possible to adopt a configuration similar to that of the modified first gap portion 84.

[0087] (3) In the above embodiment, the labyrinth structure of the first gap 84 has a path from the entrance 84a to the first joint 81 that bends three times. However, the configuration is not limited to this. For example, the number of bends in the path of the first gap 84 may be two or fewer, or four or more. However, from the viewpoint of ease of processing the member, it is preferable to have fewer bends in the path of the first gap 84, and in order to suppress the lint Yw from reaching the first joint 81, it is preferable to have more bends in the path of the first gap 84. Considering the balance between ease of processing the member and suppression of the lint Yw reaching the first joint 81, it is preferable for the number of bends in the path of the first gap 84 to be three.

[0088] (4) In the above embodiment, the first gap 84 has a labyrinth structure in which the path from the inlet 85a to the first joint 81 is curved. However, the first gap 84 may extend in a straight line from the inlet 85a to the first joint 81. In this case, the length of the first gap 84 is preferably 20 to 40 mm.

[0089] (5) In the above embodiment, the second gap portion 85 extends linearly in the vertical direction. However, the second gap portion 85 may extend linearly in a direction other than the vertical direction. For example, the second gap portion 85 may extend linearly in an oblique direction that is inclined from the vertical direction. Also, the second gap portion 85 may extend along a curve.

[0090] (6) In the above embodiment, the tapered portion 34c and the lint discharge portion 34d are integrally formed in the side wall member 34 of the separation portion 32. However, the tapered portion 34c and the lint discharge portion 34d do not have to be integrally formed. In this case, the gap portion of the present invention is provided between the joint between the tapered portion 34c and the lint discharge portion 34d of the side wall member 34 and the internal space 90.

[0091] (7) In the above embodiment, the first joint 81 is located radially outside the inner circumferential wall 35 of the cylindrical portion 34a, below the top plate member 36 and above the communication hole 39 (see Figure 5). However, it is not limited to this. The first joint 81 may be located radially inside the inner circumferential wall 35 of the cylindrical portion 34a. Alternatively, the first joint 81 may be located below the communication hole 39. For example, the first joint 81 may be located radially outside the inner circumferential wall 35 of the cylindrical portion 34a and near the lower end of the cylindrical portion 34a. By providing the first joint 81 near the lower end of the cylindrical portion 34a, the distance between the communication hole 39 to which the main body piping 14 is connected and the first joint 81 becomes larger. This makes it easier for the lint Yw sent from the main body piping 14 to the internal space 90 of the cyclone separator 30 to flow along with the air flowing along the inner circumferential wall 35 of the cylindrical portion 34a. This stabilizes the behavior of the thread fragments Yw, making them less likely to become entangled.

[0092] (8) In the above embodiment, the labyrinth structure provided in the first gap 84 is formed around the entire circumference of the lower part of the top plate portion 36a and the upper part of the enlarged diameter portion 34b. In other words, the convex portion 91 is formed around the entire circumference of the lower part of the top plate portion 36a, and the concave portion 92 is formed around the entire circumference of the upper part of the enlarged diameter portion 34b. However, it is not limited to this. A modified example of the first gap 384 is shown in Figure 9. Figure 9 is a view of the first gap 384 from above. As shown in Figure 9, the first gap 384 is formed between the internal space 90 and the first joint portion 381 (see hatched portion in Figure 9). The first gap 384 is a space that communicates with the internal space 90 and is surrounded by the lower part of the top plate portion (not shown) of the top plate member 36, the upper part of the enlarged diameter portion (not shown) of the side wall member 34 and the first joint portion 381. The first gap 384 has the labyrinth structure shown in Figure 9.

[0093] More specifically, a protruding convex portion 391 is formed on the lower part of the top plate portion (not shown) that defines the first gap portion 384 (see dashed line in Figure 9). On the upper part of the enlarged diameter portion (not shown) that defines the first gap portion 384, protruding convex portions 392 and 393 are formed (see solid line in Figure 9). As shown in Figure 9, multiple convex portions 391 are formed at intervals in the circumferential direction on the lower part of the top plate portion. Also, as shown in Figure 9, multiple convex portions 392 are formed at intervals in the circumferential direction on the upper part of the enlarged diameter portion. Similarly, multiple convex portions 393 are formed at intervals in the circumferential direction on the upper part of the enlarged diameter portion. In the radial direction, the convex portions 392, 391, and 393 are arranged in that order from the inside. Furthermore, as shown in Figure 9, it is preferable that the positions of convex portions 391 and 392 are offset from each other in the circumferential direction. Also, as shown in Figure 9, 391 Preferably, the positions of the protrusions 391, 392, and 393 are offset from each other in the circumferential direction. In particular, it is preferable that the positions of the protrusions 391, 392, and 393 are offset from each other in the circumferential direction so that a labyrinth structure is formed at any position in the circumferential direction when the first gap 384 is viewed from the horizontal direction.

[0094] (9) In the above embodiment, the four cyclone separators 30a to 30d are connected to each of the four lint transfer pipes 11a to 11d. However, one cyclone separator 30 may be connected to all four lint transfer pipes 11a to 11d.

[0095] (10) In the above embodiment, the yarn waste collection device 1 equipped with the cyclone separator 30 is installed in a false twisting machine 101. However, it is not limited to this. For example, the yarn waste collection device 1 equipped with the cyclone separator 30 may be installed in a textile machine such as a spinning take-up machine. [Explanation of Symbols]

[0096] 1. Thread waste collection device 30 Cyclone Separator 32 Separation part 34 Side wall member (first member) 34a Cylindrical section 34b Expanded diameter part 35. Inner circumferential wall (inner surface) 36. Top plate components (first component and second component) 36a Top panel 36b Projecting part 39 Communication hole 50 Air discharge section 51 Insertion member (second member) 55 Air outlet 81 1st joint 82 Second joint 84 First gap 84a entrance 85 Second gap 85a entrance 90 Interior space 101 False twisting machine

Claims

1. A cyclone separator provided in a yarn waste collection device for collecting yarn waste, which separates yarn waste from air, A first member and a second member define an internal space that separates lint and air, A joint portion to which the first member and the second member are joined to each other, Equipped with, A cyclone separator characterized in that a gap is formed between the internal space and the joint, through which lint can enter and exit.

2. The cyclone separator according to claim 1, characterized in that the gap portion has a shape that prevents lint from reaching the joint portion.

3. The cyclone separator according to claim 1 or 2, characterized in that the gap portion has a labyrinth structure in which the path from the entrance on the internal space side of the gap portion to the joint portion bends along the way.

4. The cyclone separator according to claim 3, characterized in that the labyrinth structure has the path bent multiple times.

5. The first member is a side wall member having a cylindrical portion extending in the vertical direction and an enlarged diameter portion at the upper part of the cylindrical portion that expands radially outward from the cylindrical portion, The second member is a top plate member that covers the upper part of the side wall member, The aforementioned joint includes a first joint to which the enlarged diameter portion of the side wall member and the top plate member are joined, The gap portion includes a first gap portion formed between the internal space and the first joint portion. The cyclone separator according to claim 3 or 4, characterized in that the first gap portion has the labyrinth structure.

6. The cylindrical portion has a communication hole formed in it that communicates with the inside of the yarn waste transfer pipe, which is provided in the yarn waste collection device and sends the yarn waste into the internal space. The cyclone separator according to claim 5, characterized in that the first joint is located radially outward from the inner surface of the cylindrical portion, and is provided below the top plate member and above the communication hole.

7. It comprises a side wall member having a cylindrical portion extending in the vertical direction, and a top plate member having a top plate portion that covers the upper part of the side wall member and a protruding portion that protrudes upward from the top plate portion, The first member is the top plate member, The second member is an air exhaust section positioned above the top plate member and having an air outlet for exhausting air from the internal space to the outside, The aforementioned joint includes a second joint to which the protruding portion and the air discharge portion are joined, The cyclone separator according to claim 1 or 2, characterized in that the gap portion includes a second gap portion formed between the internal space and the second joint portion.

8. The cyclone separator according to claim 1 or 2, characterized in that the gap extends linearly from the entrance on the internal space side of the gap toward the joint.

9. It comprises a side wall member having a cylindrical portion extending in the vertical direction, and a top plate member covering the upper part of the side wall member, At least one of the first member and the second member is the top plate member, The cyclone separator according to claim 8, characterized in that the gap extends in a direction intersecting the radial direction of the cylindrical portion.

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