An automatically cleanable melt-blown nonwoven fabric production device

Abstract

This invention discloses an automatically cleanable meltblown nonwoven fabric production equipment, including a meltblown device. The meltblown device includes a metering pump connected to a filter, a melt pipe with one end connected to the metering pump, a meltblown die connected to the end of the melt pipe away from the metering pump, and a meltblown assembly connected to the meltblown die. A ball valve is installed on the melt pipe. The ball valve body has a discharge hole that communicates with the interior of the ball valve. A first flow channel and a second flow channel connected to the first flow channel are pre-set inside the ball valve. When the ball valve is open, both ends of the first flow channel are directly connected to the melt pipe. When the ball valve is closed, the second flow channel is directly connected to the melt pipe, and the first flow channel is directly connected to the discharge hole. A cleaning assembly is provided on the ball valve for cleaning the inner wall of the first flow channel. This invention can improve the service life of the meltblown device.

Description

Technical Field

[0001] This invention relates to the technical field of meltblown nonwoven fabric equipment, and more particularly to a meltblown nonwoven fabric production equipment with automatic cleaning capability. Background Technology

[0002] Combination Figure 1 and Figure 2 The meltblown device and melt flow of an existing meltblown nonwoven fabric equipment are shown in the figure. It includes a metering pump 1 connected to a filter, a melt pipe 2 connected to the metering pump 1, a ball valve 5 installed on the melt pipe 2, a meltblown die 3 connected to the melt pipe 2, and a meltblown assembly 4 connected to the meltblown die 3. The ball valve 5 has a first flow channel 57 and a second flow channel 58 for melt flow, and a discharge hole 51 that indirectly communicates with the inside of the melt pipe 2. After the metering pump 1 starts, under the output pressure of the metering pump 1, the melt flows through the melt pipe 2, the first flow channel 57, into the meltblown die 3, and then into the meltblown assembly 4. When it is necessary to replace the meltblown assembly 4, the ball valve 5 is closed. At this time, the melt in the melt pipe 2 cannot continue to flow downwards, and the melt inside the melt pipe 2 flows sequentially through the second flow channel 58, the first flow channel 57, and the discharge hole 51, allowing the melt in the melt pipe 2 to be discharged through the discharge hole 51. Then, the meltblown assembly 4 is removed.

[0003] When the melt is discharged through the discharge hole, some melt may remain on the side wall of the first flow channel. During the entire component replacement process, the melt remaining in the first flow channel will undergo local carbonization or hardening. When the locally carbonized or hardened melt enters the meltblown component, it will cause local blockage of the spinneret hole of the meltblown component, resulting in the scrapping of the new meltblown component and thus reducing the service life of the meltblown device. Summary of the Invention

[0004] The purpose of this invention is to provide an automatically cleaning meltblown nonwoven fabric production equipment, which aims to improve the service life of meltblown equipment.

[0005] To solve the above-mentioned technical problems, the objective of this invention is achieved through the following technical solution: A meltblown nonwoven fabric production equipment with automatic cleaning capability is provided, comprising a meltblowing device. The meltblowing device includes a metering pump connected to a filter, a melt pipe connected at one end to the metering pump, a meltblowing die connected at the end of the melt pipe away from the metering pump, and a meltblowing assembly connected to the meltblowing die. A ball valve is installed on the melt pipe. The ball valve body has a discharge hole that can communicate with the inside of the ball valve. A first flow channel and a second flow channel connected to the first flow channel are preset inside the ball valve. When the ball valve is in the open state, both ends of the first flow channel are directly connected to the melt pipe. When the ball valve is in the closed state, the second flow channel is directly connected to the melt pipe, and the first flow channel is directly connected to the discharge hole. The invention is characterized in that: a cleaning assembly is provided on the ball valve, which is used to clean the inner wall of the first flow channel.

[0006] Furthermore, the ball valve has a slide rail on the side away from the discharge hole. When the ball valve is closed, the slide rail is directly connected to the first flow channel. The cleaning assembly includes an electric telescopic rod and a vertically arranged cleaning plate. The cleaning plate can be slidably disposed in the slide rail, the first flow channel, and the discharge hole. When the cleaning plate is located in the first flow channel, the cleaning plate is in complete contact with the inner wall of the first flow channel. The electric telescopic rod is disposed on the ball valve and is used to drive the cleaning plate to slide in the first flow channel, the slide rail, and the discharge hole.

[0007] Furthermore, an installation groove is provided on the side wall of the discharge hole, and a scraping component is provided in the installation groove. The scraping component is used to clean the side of the cleaning plate near the discharge hole.

[0008] Furthermore, the mounting groove is located at the top of the discharge hole, and the scraping assembly includes a telescopic rod vertically installed in the mounting groove, a scraper fixedly connected to the movable end of the telescopic rod, and a spring fixedly installed in the fixed end of the telescopic rod that is always in a stretched state; the ball valve is provided with a transmission assembly, which is used to drive the scraper to move vertically downward.

[0009] Furthermore, an air storage groove is provided on the top sidewall of the discharge hole, located between the mounting groove and the first flow channel; a transmission assembly is installed in the air storage groove, including a horizontally arranged mounting plate, a sliding plate located above the mounting plate and abutting against the mounting plate, a push plate located above the sliding plate and fixedly connected to the sliding plate, and a baffle located below the mounting plate. The mounting plate is completely abutting against the sidewall of the air storage groove and is fixedly connected to the sidewall of the air storage groove; a sliding groove is provided on the top surface of the mounting plate along the length of the discharge hole, and the sliding groove penetrates the mounting plate vertically; the sliding plate is always covered at the opening of the sliding groove; the top and side surfaces of the push plate are completely abutting against the inner wall of the air storage groove; the baffle is made of elastic material, the top of the baffle is slidably installed in the sliding groove and fixedly connected to the sliding plate, and the side of the baffle near the first flow channel can abut against the cleaning plate; a connecting hole is provided in the ball valve, one end of the connecting hole is connected to the inside of the air storage groove, and the connecting point is located on the side of the air storage groove near the mounting groove, and the other end of the connecting hole is connected to the inside of the fixed end of the telescopic rod, and the connecting point is located above the movable end of the telescopic rod.

[0010] Furthermore, a clearance groove is provided on the bottom side wall of the discharge hole, and the scraper can move downward into the clearance groove under the drive of the movable end of the telescopic rod.

[0011] In summary, this application includes at least one of the following beneficial effects:

[0012] 1. By setting up a cleaning component, after the melt in the melt pipe is discharged through the second flow channel, the first flow channel and the discharge hole, the cleaning component cleans the inner wall of the first flow channel and transports the melt remaining in the first flow channel to the discharge hole, thus preventing the melt remaining in the first flow channel from entering the meltblown component, thereby reducing the possibility of damage to the meltblown component and improving the service life of the meltblown equipment.

[0013] 2. By setting up a scraping component, the scraping component cleans the side of the cleaning plate near the mounting groove, preventing molten material from remaining on the cleaning plate, thereby preventing the molten material from re-entering the first flow channel during the resetting process of the cleaning plate. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 is a schematic diagram of an existing meltblown device;

[0016] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0017] Figure 3 is a structural schematic diagram of an embodiment of this application;

[0018] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle;

[0019] Figure 5 yes Figure 4 A magnified view of a section at point C.

[0020] Explanation of the markings in the image:

[0021] 1. Metering pump;

[0022] 2. Melt pipe;

[0023] 3. Meltblown die head;

[0024] 4. Meltblown assembly;

[0025] 5. Ball valve; 51. Drain hole; 52. Mounting groove; 53. Clearance groove; 54. Air storage tank; 55. Connecting groove; 56. Slide rail; 57. First flow channel; 58. Second flow channel;

[0026] 6. Sweeping assembly; 61. Electric telescopic boom; 62. Sweeping plate;

[0027] 7. Scraping assembly; 71. Telescopic rod; 72. Spring; 73. Scraper;

[0028] 8. Transmission assembly; 81. Mounting plate; 811. Slide groove; 82. Baffle; 83. Slide plate; 84. Push plate. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0031] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0032] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0033] Combination Figure 3 and Figure 4 This invention provides an automatically cleanable meltblown nonwoven fabric production equipment, including a meltblown device. The meltblown device includes a metering pump 1 connected to a filter, a melt pipe 2 connected to the metering pump 1 at one end, a meltblown die 3 connected to the end of the melt pipe 2 away from the metering pump 1, and a meltblown assembly 4 connected to the meltblown die 3. The melt pipe 2 is vertically arranged, and a ball valve 5 is installed on the melt pipe 2. The ball valve 5 has a discharge hole 51 that can communicate with the inside of the ball valve 5. The ball valve 5 has a first flow channel 57 and a second flow channel 58 that communicates with the first flow channel 57. When the ball valve 5 is in the open state, both ends of the first flow channel 57 are directly connected to the melt pipe 2. When the ball valve 5 is in the closed state, the second flow channel 58 is directly connected to the melt pipe 2, and the first flow channel 57 is directly connected to the discharge hole 51.

[0034] When the meltblown device is working normally, ball valve 5 is in the open state. At this time, metering pump 1 is started. Under the action of the output pressure of metering pump 1, the melt enters the meltblown die head 3 through melt pipe 2 and first flow channel 57 and then enters meltblown assembly 4. When meltblown assembly 4 needs to be replaced, control ball valve 5 is in the closed state. When meltblown assembly 4 needs to be replaced, control ball valve 5 is in the closed state, so that the second flow channel 58 is directly connected to the inside of melt pipe 2, and the first flow channel 57 is directly connected to the discharge hole 51. The melt in melt pipe 2 is discharged through the second flow channel 58, the first flow channel 57 and the discharge hole 51 in sequence under the action of the output pressure of metering pump 1.

[0035] Combination Figure 3 and Figure 4A slide 56 is horizontally provided on the side of the ball valve 5 away from the discharge hole 51. The length direction of the slide 56 is the same as that of the discharge hole 51, and the longitudinal section of the slide 56 is circular. The diameter of the slide 56 is the same as the diameter of the first flow channel 57 and the diameter of the second flow channel 58. When the ball valve 5 is in the open state, the first flow channel 57 is vertically arranged, the second flow channel 58 is horizontally arranged, and the end of the second flow channel 58 away from the first flow channel 57 is directly connected to the slide 56. When the ball valve 5 is in the closed state, the second flow channel 58 is vertically arranged, the first flow channel 57 is horizontally arranged, the end of the first flow channel 57 away from the discharge hole 51 is directly connected to the slide 56, and the end of the first flow channel 57 near the discharge hole 51 is directly connected to the discharge hole 51.

[0036] Combination Figure 3 and Figure 4 A cleaning assembly 6 is provided on the ball valve 5. The cleaning assembly 6 includes an electric telescopic rod 61 and a cleaning plate 62. The length direction of the electric telescopic rod 61 is the same as the length direction of the slide rail 56. The fixed end of the electric telescopic rod 61 is located on the side of the ball valve 5 near the slide rail 56 and is fixedly connected to the ball valve 5. The movable end of the electric telescopic rod 61 is located inside the slide rail 56. The cleaning plate 62 is coaxially arranged with the slide rail 56. In the initial state, the cleaning plate 62 is located inside the slide rail 56 and on one side of the electric telescopic rod 61. The cleaning plate 62 is fixedly connected to the movable end of the electric telescopic rod 61.

[0037] Combination Figure 3 and Figure 4 When the first flow channel 57 is connected to the slide 56, the cleaning plate 62 can slide into the first flow channel 57 and the discharge hole 51 in sequence under the drive of the cleaning plate 62; when the cleaning plate 62 is located in the slide 56, the cleaning plate 62 abuts against the side wall of the slide 56; when the cleaning plate 62 is located in the first flow channel 57, the cleaning plate 62 abuts against the side wall of the first flow channel 57; when the cleaning plate 62 is located in the discharge hole 51, the cleaning plate 62 abuts against the side wall of the discharge hole 51.

[0038] After the melt in the melt pipe 2 is discharged through the discharge hole 51, the electric telescopic rod 61 is activated. The movable end of the electric telescopic rod 61 drives the cleaning plate 62 to slide from the chute 811 into the first flow channel 57 and the discharge hole 51 in sequence. During the sliding process, the cleaning plate 62 scrapes the inner wall of the first flow channel 57, so that the cleaning plate 62 pushes the melt remaining in the first flow channel 57 into the discharge hole 51, preventing the melt remaining in the first flow channel 57 from entering the meltblown assembly 4, thereby reducing the possibility of damage to the meltblown assembly 4 and improving the service life of the meltblown equipment.

[0039] Combination Figure 4 and Figure 5A mounting groove 52 is provided on the top side wall of the discharge hole 51, and a clearance groove 53 is provided on the bottom side wall of the discharge hole 51. The clearance groove 53 penetrates the outer shell of the ball valve 5 in a direction away from the ball valve 5. The ball valve 5 is provided with a scraping assembly 7 and a transmission assembly 8. The scraping assembly 7 is located in the mounting groove 52 and includes a telescopic rod 71, a spring 72, and a scraper 73. The telescopic rod 71 is vertically arranged, and its fixed end is fixedly connected to the bottom surface of the mounting groove 52. The scraper 73 is horizontally arranged below the telescopic plate and is connected to the mounting groove 52. The sidewall of the groove 52 is completely in contact with the scraper 73, which is fixedly connected to the movable end of the telescopic rod 71. The spring 72 is vertically installed inside the fixed end of the telescopic rod 71, with the top end of the spring 72 fixedly connected to the fixed end of the telescopic rod 71 and the bottom end of the spring 72 fixedly connected to the movable end of the telescopic rod 71. The spring 72 is always in a pulled rope state. The transmission assembly 8 is used to deliver gas into the fixed end of the telescopic rod 71. The movable end of the telescopic rod 71 moves downward under the compression of the gas, and the scraper 73 can move downward into the clearance groove 53 under the drive of the movable end of the telescopic rod 71.

[0040] Combination Figure 4 and Figure 5 A gas storage groove 54 is provided on the top side wall of the discharge hole 51. The gas storage groove 54 is located between the first flow channel 57 and the mounting groove 52. The transmission assembly 8 is disposed in the gas storage groove 54. The transmission assembly 8 includes a mounting plate 81, a baffle 82, a sliding plate 83, and a pusher 84. The mounting plate 81 is horizontally disposed at the opening of the gas storage groove 54, and the side of the mounting plate 81 completely abuts against the side wall of the gas storage groove 54. The mounting plate 81 is fixedly connected to the side wall of the gas storage groove 54. A sliding groove 811 is provided on the top surface of the mounting plate 81. The length direction of the sliding groove 811 is the same as the length direction of the discharge hole 51, and the sliding groove 811 penetrates the mounting plate 81 vertically. The sliding plate 83 is horizontally disposed on the mounting plate 81. On the top surface, the sliding plate 83 always covers the opening of the groove 811, and the sliding plate 83 is slidably connected to the mounting plate 81 along the length of the groove 811. A push plate 84 is vertically installed on the top surface of the sliding plate 83, and the top and side surfaces of the push plate 84 are completely in contact with the inner wall of the air storage tank 54. The baffle 82 is made of rubber material and is vertically installed below the mounting plate 81. The top of the baffle 82 is slidably installed in the groove 811, and the baffle 82 is fixedly connected to the bottom surface of the sliding plate 83. A connecting hole is opened on the body of the ball valve 5, which is located between the air storage tank 54 and the mounting groove 52. One end of the connecting hole is connected to the inside of the air storage tank 54, and the other end is connected to the inside of the fixed end of the telescopic rod 71. The connection between the connecting hole and the air storage tank 54 is located on the side of the push plate 84 near the mounting groove 52, and the connection between the connecting hole and the fixed end of the telescopic rod 71 is located above the movable end of the telescopic rod 71.

[0041] As the sweeping plate 62 approaches the clearance groove 53, when the sweeping plate 62 comes into contact with the baffle 82, the sweeping plate 62 drives the baffle 82 to move towards the mounting groove 52, causing the baffle 82 to drive the sliding plate 83, the push plate 84, and the sweeping plate 62 to move together towards the mounting groove 52; when the baffle 82 comes into contact with the sliding groove 811 during the sliding process, the baffle 82 stops moving; when the baffle 82 stops moving, the sliding sweeping plate 62 causes the baffle 82 to bend and deform, and when the sweeping plate 62 moves to the point where the discharge hole 51 connects with the clearance groove 53, the sweeping plate 62 stops moving under the control of the electric telescopic rod 61.

[0042] As the pusher plate 84 moves toward the mounting groove 52, it compresses the gas in the gas storage tank 54 through the connecting hole into the fixed end of the telescopic rod 71, causing the movable end of the telescopic rod 71 to move downward under the pressure of the gas, which in turn causes the scraper 73 to move downward. It should be noted that when the cleaning plate 62 stops moving, the downward-moving scraper 73 is still located in the mounting groove 52, and when the scraper 73 is located in the discharge hole 51, the scraper 73 abuts against the cleaning plate 62, so that the vertically downward-moving scraper 73 pushes any molten material that may be stuck on the cleaning plate 62 into the relief groove 53.

[0043] When the scraper 73 enters the clearance groove 53, the electric telescopic rod 61 is activated, which drives the cleaning plate 62 back to its initial position. After the cleaning plate 62 separates from the baffle 82, the spring 72, which is in a stretched state, drives the movable end of the telescopic rod 71 and the scraper 73 to move upward back to their initial positions. This also causes the gas that entered the fixed end of the telescopic rod 71 to return to the air storage tank 54 through the connecting hole, thereby causing the push plate 84, the slide plate 83, and the baffle 82 to all return to their initial positions.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An automatically cleanable meltblown nonwoven fabric production equipment, comprising a meltblown device, the meltblown device comprising a metering pump (1) connected to a filter, a melt pipe (2) connected at one end to the metering pump (1), a meltblown die (3) connected at the end of the melt pipe (2) away from the metering pump (1), and a meltblown assembly (4) connected to the meltblown die (3), wherein a ball valve (5) is installed on the melt pipe (2); the ball valve (5) has a discharge hole (51) that can communicate with the inside of the ball valve (5); the ball valve (5) has a first flow channel (57) and a second flow channel (58) that communicates with the first flow channel (57); when the ball valve (5) is in the open state, both ends of the first flow channel (57) are directly connected to the melt pipe (2); when the ball valve (5) is in the closed state, the second flow channel (58) is directly connected to the melt pipe (2), and the first flow channel (57) is directly connected to the discharge hole (51), characterized in that: The ball valve (5) is provided with a cleaning assembly (6), which is used to clean the inner wall of the first flow channel (57); The ball valve (5) has a slide rail (56) on the side away from the discharge hole (51). When the ball valve (5) is closed, the slide rail (56) is directly connected to the first flow channel (57). The cleaning assembly (6) includes an electric telescopic rod (61) and a vertically arranged cleaning plate (62). The cleaning plate (62) can be slidably arranged in the slide rail (56), the first flow channel (57), and the discharge hole (51). When the cleaning plate (62) is located in the first flow channel (57), the cleaning plate (62) is completely in contact with the inner wall of the first flow channel (57). The electric telescopic rod (61) is arranged on the ball valve (5). The electric telescopic rod (61) is used to drive the cleaning plate (62) to slide in the first flow channel (57), the slide rail (56), and the discharge hole (51). An installation groove (52) is provided on the side wall of the discharge hole (51), and a scraping component (7) is provided in the installation groove (52). The scraping component (7) is used to clean the side of the cleaning plate (62) near the discharge hole (51). The mounting groove (52) is located at the top of the discharge hole (51). The scraping assembly (7) includes a telescopic rod (71) vertically installed in the mounting groove (52), a scraper (73) fixedly connected to the movable end of the telescopic rod (71), and a spring (72) fixedly installed in the fixed end of the telescopic rod (71) and always in a stretched state. A transmission assembly (8) is provided on the ball valve (5). The transmission assembly (8) is used to drive the scraper (73) to move vertically downward. A gas storage groove (54) is provided on the top side wall of the discharge hole (51), and the gas storage groove (54) is located between the mounting groove (52) and the first flow channel (57); the transmission assembly (8) is set in the gas storage groove (54), and the transmission assembly (8) includes a horizontally arranged mounting plate (81), a sliding plate (83) located above the mounting plate (81) and abutting against the mounting plate (81), a push plate (84) located above the sliding plate (83) and fixedly connected to the sliding plate (83), and a baffle (82) located below the mounting plate (81). The mounting plate (81) completely abuts against the side wall of the gas storage groove (54) and is fixedly connected to the side wall of the gas storage groove (54); a sliding groove (811) is provided on the top surface of the mounting plate (81) along the length direction of the discharge hole (51), and the sliding groove (811) The mounting plate (81) is vertically penetrated; the sliding plate (83) is always covered at the opening of the groove (811); the top and side surfaces of the push plate (84) are completely in contact with the inner wall of the gas storage tank (54); the baffle (82) is made of elastic material, the top of the baffle (82) is slidably set in the groove (811) and is fixedly connected to the sliding plate (83), and the side of the baffle (82) near the first flow channel (57) can abut against the cleaning plate (62); the ball valve (5) has a connecting hole, one end of the connecting hole is connected to the inside of the gas storage tank (54), and the connecting point is located on the side of the gas storage tank (54) near the mounting groove (52), and the other end of the connecting hole is connected to the inside of the fixed end of the telescopic rod (71), and the connecting point is located above the movable end of the telescopic rod (71); The bottom sidewall of the discharge hole (51) is provided with a relief groove (53), and the scraper (73) can move downward into the relief groove (53) under the drive of the movable end of the telescopic rod (71).

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