Mesh belt cleaning device for non-woven fabric forming production line

Abstract

The invention discloses a mesh belt cleaning device for a non-woven fabric forming production line, and relates to the technical field of non-woven fabric production equipment.The mesh belt cleaning device comprises a mesh belt, an air conveying unit is arranged on the back face of the mesh belt, one end of the air conveying unit is communicated with an air supply unit, and an air spraying unit is installed on the air conveying unit; the air conveying unit communicated with the air supply unit is arranged on the back face of the mesh belt, the air spraying unit is arranged on the back face of the mesh belt, the air spraying unit can enable air flow to penetrate towards the back face of the mesh belt, and the air flow can drive blockages to fall off from the front face of the mesh belt. The air flow can drive blockages to fall off from the front face of the mesh belt, so that the mesh belt is effectively cleaned, meshes of the mesh belt are kept in a smooth state, the whole process can be carried out in the normal operation process of the mesh belt, the online cleaning effect on the mesh belt is achieved, and normal use of the mesh belt is not delayed.

Description

Technical Field

[0001] This invention relates to the field of nonwoven fabric production equipment technology, specifically to a mesh belt cleaning device for a nonwoven fabric forming production line. Background Technology

[0002] Non-woven fabric, also known as non-woven cloth, is a type of fabric produced primarily through non-woven processes. One method involves melting a polymer and extruding it through a spinneret. A high-speed hot air stream stretches the polymer into microfibers, which are then deposited onto a mesh belt to form a web. Subsequent processes, such as pressing and heating, produce the final non-woven fabric roll. In practical applications, it is necessary to maintain the openness of the mesh belt's openings to ensure good air permeability and promote the uniformity of the microfiber web layer.

[0003] In actual use, some fibers get stuck in the mesh of the mesh belt, which affects the air permeability of the mesh belt. The current method is to set up a cleaning brush that contacts the conveying surface of the mesh belt, and use the relative movement between the conveying surface of the mesh belt and the cleaning brush to clean the fibers on the mesh belt.

[0004] The existing solution has the following shortcomings: since the cleaning brush and the fiber filaments are both on the conveying surface of the mesh belt, some fiber filaments are easily trapped in the mesh due to the force of the cleaning brush. In addition, the cleaning brush is also prone to getting tangled with too many fiber filaments, which weakens the cleaning effect. To solve the above problems, we have designed a mesh belt cleaning device for non-woven fabric forming production line. Summary of the Invention

[0005] The purpose of this invention is to provide a mesh belt cleaning device for a nonwoven fabric forming production line to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A mesh belt cleaning device for a nonwoven fabric forming production line includes a mesh belt, an air conveying unit on the back of the mesh belt, one end of the air conveying unit being connected to an air supply unit, and an air jetting unit installed on the air conveying unit. The air jetting unit enables airflow to penetrate towards the back of the mesh belt, and the airflow can drive blockages to fall off from the front of the mesh belt.

[0008] Preferably, the gas delivery unit includes a cylindrical tube, both ends of which are fixed with sealing caps, and each sealing cap is fixedly connected with a rigid shaft tube. The tube body of the cylindrical tube is rolled in contact with the back of the mesh belt.

[0009] Preferably, the air supply unit includes an air delivery pipe connected to an air compression device, and the end of the air delivery pipe is connected to a rigid shaft tube via a rotary air guide joint.

[0010] Preferably, the air jet unit comprises a vent hole opened on the pipe body of the cylindrical pipe, which can directly jet the gas in the cylindrical pipe towards the back area in rolling contact with the web belt.

[0011] Preferably, each of the hard shaft pipes is fitted with a bearing seat, and each of the bearing seats is fitted with a support assembly for support.

[0012] Preferably, the vent hole is fitted with an air valve unit, which is in a conductive state when the web belt covers the vent hole, and the airflow can be jetted towards the back of the web belt, and the air valve unit is in a closed state when the web belt moves away from the vent hole.

[0013] Preferably, the air valve unit comprises a barrel pipe fitted with the vent hole, and the side surface of the barrel pipe is provided with a gas permeable port, and the barrel pipe is in a blocking position where the vent hole completely covers the gas permeable port, and the air valve unit is in a closed state.

[0014] Preferably, when the air valve unit is in a closed state, the barrel port end of the barrel pipe protrudes out of the pipe body of the cylindrical pipe.

[0015] Preferably, the gas permeable port is a long strip port, and a limiting rod vertically penetrating the barrel pipe is arranged in the gas permeable port, and the limiting rod limits the axial stroke movement end of the barrel pipe in the vent hole.

[0016] Preferably, the end surface of the barrel port end of the barrel pipe is fixed with a rubber gasket.

[0017] In the above technical solution, the web belt cleaning device for the non-woven fabric forming production line provided by the present application sets a gas conveying unit in communication with the air supply unit on the back of the web belt, and the air jet unit jets the airflow in the gas conveying unit towards the back of the web belt, so that the airflow can drive the blockage to fall off from the front of the web belt, thereby effectively cleaning the web belt and keeping the mesh of the web belt unobstructed, and the whole process can be carried out during the normal operation of the web belt, thereby achieving online cleaning of the web belt without affecting the normal use of the web belt. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0019] Figure 1 The figure shows the position of the cylindrical pipe of the web belt cleaning device for the non-woven fabric forming production line on the web belt.

[0020] Figure 2 This is a schematic diagram of the cross-section of a cylindrical tube of a mesh belt cleaning device for a nonwoven fabric forming production line according to the present invention.

[0021] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a schematic diagram of the inner liner tube of a mesh belt cleaning device for a nonwoven fabric forming production line according to the present invention, inside the ventilation hole.

[0023] Figure 5 For the present invention Figure 4 Enlarged view at point B in the middle;

[0024] Figure 6 This is a cross-sectional schematic diagram showing the fitting and insertion of the tube of a mesh belt cleaning device for a nonwoven fabric forming production line according to the present invention into the inner liner tube.

[0025] Figure 7 This is a schematic diagram of the insertion hole of a mesh belt cleaning device for a nonwoven fabric forming production line according to the present invention at the end of a cylindrical tube.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Mesh belt; 2. Air delivery unit; 2.1. Cylindrical tube; 2.2. Sealing cap; 2.3. Rigid shaft tube; 3. Air supply unit; 3.1. Air delivery pipe; 3.2. Rotary air guide joint; 4. Air jet unit; 4.1. Vent hole; 5. Bearing seat; 6. Support assembly; 7. Air valve unit; 7.1. Cylindrical tube; 7.2. Vent port; 8. Limiting rod; 9. Rubber gasket; 10. Through hole; 11. Inner liner tube; 12. Slide groove; 13. Knob block; 14. Gear structure; 15. Gear; 16. Screw rod. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Please see Figure 1 - Figure 7 The present invention provides a mesh belt cleaning device for a non-woven fabric forming production line, including a mesh belt 1, an air conveying unit 2 on the back of the mesh belt 1, an air supply unit 3 connected to one end of the air conveying unit 2, and an air jet unit 4 installed on the air conveying unit 2. The air jet unit 4 enables the airflow to penetrate towards the back of the mesh belt 1, and the airflow can drive the blockage to fall off from the front of the mesh belt 1.

[0030] Specifically, the mesh belt 1 can move at a high speed under the driving of the driving roller unit, and the conveying speed of the mesh belt 1 is generally 600-800 meters per minute. The mesh belt 1 and the driving roller unit driven by the mesh belt 1 are both prior art and will not be described in detail. The air conveying unit 2 is an air conveying pipe, the air supply unit 3 is an air compressor connected with the air conveying pipe, and the air jet unit 4 is a nozzle pipe connected with the air outlet end of the air conveying pipe. The nozzle pipe is an L-shaped elbow pipe, the port surface of the nozzle pipe is close to the back surface of the mesh belt 1, and the airflow in the air conveying pipe is guided by the nozzle pipe to penetrate the back surface of the mesh belt 1, so that the airflow can drive the blockage to fall off from the front surface of the mesh belt 1. It should be further pointed out that the direction of the port of the nozzle pipe is downward or sideward, and the conveying direction of the mesh belt 1 is perpendicular to the jet direction of the nozzle pipe.

[0031] In actual use, the high-pressure gas in the air supply unit 3 is transmitted to the air jet unit 4 through the air conveying unit 2, and then the air jet unit 4 guides the airflow to penetrate the back surface of the mesh belt 1, so that the airflow can drive the blockage to fall off from the front surface of the mesh belt 1, thereby achieving an effective cleaning effect on the mesh belt, keeping the mesh holes of the mesh belt unblocked, and the entire process can be carried out during normal operation of the mesh belt, thereby achieving online cleaning of the mesh belt without affecting normal use of the mesh belt.

[0032] In another embodiment of the present application, the air conveying unit 2 includes a cylindrical pipe 2.1, the axis of the cylindrical pipe 2.1 is parallel to the axis of the driving roller driving the mesh belt 1, both ends of the cylindrical pipe 2.1 are fixed with blocking covers 2.2, each blocking cover 2.2 is fixed with a hard shaft pipe 2.3 in communication, the axis of the hard shaft pipe 2.3 coincides with the axis of the cylindrical pipe 2.1, the pipe body of the cylindrical pipe 2.1 is in rolling contact with the back surface of the mesh belt 1, and the pipe body of the cylindrical pipe 2.1 can rotate correspondingly following the conveying movement of the mesh belt 1. Preferably, the pipe body of the cylindrical pipe 2.1 is covered with an anti-skid mesh sleeve to ensure that the pipe body of the cylindrical pipe 2.1 has good friction with the back surface of the mesh belt 1, avoiding slipping between the pipe body of the cylindrical pipe 2.1 and the mesh belt 1, and the cylindrical pipe 2.1 can rotate synchronously with the driving of the mesh belt 1.

[0033] The air supply unit 3 includes a gas supply pipe 3.1 connected with an air compression device, the end of the gas supply pipe 3.1 is connected with the hard shaft pipe 2.3 through a rotary air guide joint 3.2, and the pipe body of the cylindrical pipe 2.1 rotates synchronously with the hard shaft pipe 2.3 during rotation. The end of the gas supply pipe 3.1 is connected with the hard shaft pipe 2.3 through the rotary air guide joint 3.2, so that the air in the gas supply pipe 3.1 can be continuously conveyed into the hard shaft pipe 2.3, and the hard shaft pipe 2.3 transmits the air into the cylindrical pipe 2.1.

[0034] Further, the air jet unit 4 comprises air holes 4.1 opened on the pipe body of the cylindrical pipe 2.1, the air holes 4.1 are multiple in number and uniformly distributed on the pipe body of the cylindrical pipe 2.1, the air holes 4.1 can directly jet the gas in the cylindrical pipe 2.1 towards the back area in rolling contact with the mesh belt 1;

[0035] It needs to be further explained that each hard shaft pipe 2.3 is adapted to be installed with a bearing seat 5, each bearing seat 5 is installed with a support assembly 6 for support, the support assembly 6 is preferably a frame structure, the support assembly 6 provides a rotating support action for the position of the cylindrical pipe 2.1, and keeps the position of the cylindrical pipe 2.1 on the mesh belt 1 unchanged;

[0036] In actual use, since the pipe body of the cylindrical pipe 2.1 can follow the corresponding rotation with the mesh belt 1 conveying movement, therefore, during the process that the mesh belt 1 passes through the pipe surface of the cylindrical pipe 2.1, the cylindrical pipe 2.1 and the mesh belt 1 contacted are in a relatively static state, and the air holes 4.1 are opened on the pipe surface of the pipe body of the cylindrical pipe 2.1, therefore, in this process, it is equivalent to prolong the time length of the air holes 4.1 jetting the same position on the mesh belt 1, thereby enhancing the cleaning effect on the mesh belt 1.

[0037] The present application provides still another embodiment, the air holes 4.1 are adapted to be installed with an air valve unit 7, when the mesh belt 1 covers the air holes 4.1, the air valve unit 7 is in a conduction state, the airflow can be jetted towards the back of the mesh belt 1, and when the mesh belt 1 moves away from the air holes 4.1, the air valve unit 7 is in a closed state;

[0038] Specifically, the air valve unit 7 comprises a barrel 7.1 adapted to be inserted with the air hole 4.1, the pipe opening end of the barrel 7.1 faces the outside of the cylindrical pipe 2.1, the axis line of the air hole 4.1 is perpendicular to the axis line of the cylindrical pipe 2.1, the axis line of the barrel 7.1 is perpendicular to the axis line of the cylindrical pipe 2.1, the barrel 7.1 can move axially in the air hole 4.1, the side surface of the barrel 7.1 is opened with an air hole 7.2, when the barrel 7.1 is in a completely covered plugging position of the air hole 7.2 by the air hole 4.1, the air valve unit 7 is in a closed state;

[0039] Further, when the air valve unit 7 is in the closed state, the barrel end of the barrel tube 7.1 protrudes out of the pipe body of the cylindrical pipe 2.1, wherein the air vent 7.2 is a long strip, the length direction line of the air vent 7.2 is parallel to the axis line of the barrel tube 7.1, and the air vent 7.2 is provided with a limiting rod 8 vertically penetrating the barrel tube 7.1, the limiting rod 8 limits the axial movement of the barrel tube 7.1 in the air hole 4.1, and the end of the barrel end of the barrel tube 7.1 is fixed with a rubber ring 9, which increases the friction between the barrel end of the barrel tube 7.1 and the back of the mesh belt 1, and plays a role of elastic buffering and protection for the mesh belt 1;

[0040] In actual use, a part of the pipe body surface of the cylindrical pipe 2.1 is actually in contact with the back of the mesh belt 1, which is the covering surface, and the other part of the pipe body surface of the cylindrical pipe 2.1 is actually separated from the back of the mesh belt 1, which is the uncovered surface. Since the pipe body of the cylindrical pipe 2.1 can rotate at a high speed following the high-speed conveying movement of the mesh belt 1;

[0041] Therefore, during the high-speed rotation of the cylindrical pipe 2.1, under the action of centrifugal force and partial air pressure, the barrel tube 7.1 in the air hole 4.1 at the uncovered surface position of the cylindrical pipe 2.1 moves out, so that the barrel end of the barrel tube 7.1 protrudes out of the pipe body of the cylindrical pipe 2.1, at this time the hole wall of the air hole 4.1 completely covers the air vent 7.2, the out movement of the barrel tube 7.1 in the air hole 4.1 also reaches the terminal position, and the limiting rod 8 also reaches the end position of the length direction line of the air vent 7.2, so that the barrel tube 7.1 can stop in time at the terminal position of the out movement, avoiding the barrel tube 7.1 completely separating from the air hole 4.1, and the barrel tube 7.1 being in the blocking state of the air hole 4.1, so that the air in the cylindrical pipe 2.1 cannot be sprayed out through the air hole 4.1 at the uncovered surface position, so at this time the air valve unit 7 is in the closed state in the air hole 4.1;

[0042] With the continuous high-speed rotation of the cylindrical pipe 2.1, the air valve unit 7 originally at the uncovered surface position will be shifted to the covering surface position, in this process, the barrel end of the barrel tube 7.1 protruding out of the pipe body of the cylindrical pipe 2.1 is in contact with the back of the mesh belt 1, and the extrusion force of the mesh belt 1 on the barrel end of the barrel tube 7.1 is greater than the centrifugal force and air pressure acting on the barrel tube 7.1, so that the barrel tube 7.1 moves in the air hole 4.1, at this time the hole wall of the air hole 4.1 no longer covers the air vent 7.2, and the air vent 7.2 is located in the cylindrical pipe 2.1, so at this time the air valve unit 7 is in the open state in the air hole 4.1, and the air in the cylindrical pipe 2.1 can enter the inside of the barrel tube 7.1 through the air vent 7.2, and then be sprayed towards the back of the mesh belt 1 through the air hole 4.1;

[0043] With the continued high-speed rotation of the cylindrical pipe 2.1, the air valve unit 7 originally in the covered position will also be shifted to the uncovered position, at which time the barrel pipe 7.1 will also be extended, and the air valve unit 7 will be switched from the open state to the closed state in the air hole 4.1;

[0044] That is, by providing the air valve unit 7 capable of automatically switching between open and closed states in the air hole 4.1, the position of the cylindrical pipe 2.1 covered by the air hole 4.1 can inject high-speed airflow, while the position of the cylindrical pipe 2.1 uncovered by the air hole 4.1 is blocked, so that the airflow in the cylindrical pipe 2.1 is more concentrated to the position of the net belt 1, thereby improving the utilization rate of the airflow, and also improving the airflow injection intensity of the air hole 4.1 in the covered position, further improving the cleaning effect.

[0045] In another embodiment provided by the present application, the axis of the limiting rod 8 is parallel to the axis of the cylindrical pipe 2.1, the end face of the cylindrical pipe 2.1 is provided with a plurality of through holes 10, the axis of the through hole 10 is parallel to the axis of the cylindrical pipe 2.1, the through hole 10 is located on the pipe body of the cylindrical pipe 2.1, the through hole 10 is in series communication with the air hole 4.1, the cross section of the limiting rod 8 is circular, the limiting rod 8 can rotate axially on the cylindrical pipe 2.1, the limiting rod 8 is located in the through hole 10, and the limiting rod 8 penetrates each air hole 4.1 through the through hole 10;

[0046] The air hole 4.1 is inserted and fixed with an inner liner 11, the outer wall surface of the inner liner 11 is matched and fitted with the hole wall surface of the air hole 4.1, one end of the inner liner 11 is flush with the outer side surface of the cylindrical pipe 2.1, the other end of the inner liner 11 protrudes from the inner wall surface of the cylindrical pipe 2.1, the barrel pipe 7.1 is movably inserted and fitted in the inner liner 11, the side wall of the inner liner 11 is provided with a sliding slot 12, the limiting rod 8 penetrates the sliding slot 12, the length direction line of the sliding slot 12 is parallel to the length direction line of the air hole 7.2, a plurality of gear slot structures 14 are provided on one side edge of the sliding slot 12 in the length direction, the gear slot structure 14 constitutes a tooth surface on one side edge of the sliding slot 12 in the length direction, a gear 15 coaxially fixed on the limiting rod 8 can be matched and engaged with the gear slot structure 14 on one side edge of the sliding slot 12, when the gear 15 is engaged with the gear slot structure 14, if the limiting rod 8 rotates forward, the blocking barrel 11 moves forward, thereby increasing the coverage of the air hole 7.2 and reducing the actual air area of the air hole 7.2, if the limiting rod 8 rotates reversely, the blocking barrel 11 moves reversely, thereby reducing the coverage of the air hole 7.2 and increasing the actual air area of the air hole 7.2;

[0047] The rod body end of the limiting rod 8 extending out of the end of the cylindrical pipe 2.1 is fixed with a knob block 13, and it is particularly pointed out that the edge surface of the blocking cover 2.2 is sealingly fixed with the inner wall surface of the cylindrical pipe 2.1, the blocking cover 2.2 is located inside the cylindrical pipe 2.1, the cover plate surface of the blocking cover 2.2 is perpendicular to the axis of the cylindrical pipe 2.1, the cover plate surface of the blocking cover 2.2 has a spacing space with the end surface of the cylindrical pipe 2.1, the screw rod 16 is spirally connected on the inner wall surface of the spacing space in the cylindrical pipe 2.1, the rod body axis of the screw rod 16 is perpendicular to the rod body axis of the limiting rod 8, and the end of the screw rod 16 can extrude and limit the rod body of the limiting rod 8, so as to limit the axial rotation of the limiting rod 8;

[0048] In actual use, under the condition that the cylindrical pipe 2.1 is static, the screw rod 16 is counterclockwise rotated, so that the screw rod 16 cancels the extrusion and limitation of the rod body of the limiting rod 8, the knob block 13 is twisted, so that the limiting rod 8 can be axially rotated in the penetrating hole 10, and according to the switching of the axial rotation direction of the limiting rod 8, the actual air passage area size of the air vent 7.2 is adjusted.

[0049] The above only describes some exemplary embodiments of the application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the application. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the application.

Claims

1. A mesh belt cleaning device for a nonwoven fabric forming production line, comprising a mesh belt (1), characterized in that, The back of the mesh belt (1) is provided with an air conveying unit (2), one end of which is connected to an air supply unit (3). An air jet unit (4) is installed on the air conveying unit (2). The air jet unit (4) enables the airflow to penetrate the back of the mesh belt (1), and the airflow can drive the blockage to fall off from the front of the mesh belt (1).

2. The mesh belt cleaning device for a nonwoven fabric forming production line according to claim 1, characterized in that, The gas delivery unit (2) includes a cylindrical tube (2.1), both ends of which are fixed with sealing caps (2.2), and each sealing cap (2.2) is fixedly connected with a rigid shaft tube (2.3). The tube body of the cylindrical tube (2.1) is in rolling contact with the back of the mesh belt (1).

3. The mesh belt cleaning device for a nonwoven fabric forming production line according to claim 2, characterized in that, The air supply unit (3) includes an air supply pipe (3.1) connected to an air compression device. The end of the air supply pipe (3.1) is connected to the rigid shaft tube (2.3) via a rotary air guide joint (3.2).

4. The mesh belt cleaning device for a nonwoven fabric forming production line according to claim 2, characterized in that, The jet unit (4) includes a vent (4.1) on the tube body of the cylindrical tube (2.1), which can spray the gas in the cylindrical tube (2.1) directly toward the back area that is covered and rolled in contact with the mesh belt (1).

5. The mesh belt cleaning device for a nonwoven fabric forming production line according to claim 3, characterized in that, Each of the hardened shaft tubes (2.3) is fitted with a bearing seat (5), and each of the bearing seats (5) is fitted with a support assembly (6) for support.

6. The mesh belt cleaning device for a nonwoven fabric forming production line according to claim 4, characterized in that, An air valve unit (7) is adapted to be installed in the vent (4.1). When the mesh belt (1) covers the vent (4.1), the air valve unit (7) is in the conducting state, and the airflow can be sprayed towards the back of the mesh belt (1). When the mesh belt (1) moves away from the vent (4.1), the air valve unit (7) is in the closed state.

7. The mesh belt cleaning device for a nonwoven fabric forming production line according to claim 6, characterized in that, The air valve unit (7) includes a tube (7.1) that is adapted to be inserted into the vent (4.1). The tube (7.1) has a vent (7.2) on its side. When the tube (7.1) is in a blocked position where the vent (4.1) completely covers the vent (7.2), the air valve unit (7) is in a closed state.

8. A mesh belt cleaning device for a nonwoven fabric forming production line according to claim 7, characterized in that, When the air valve unit (7) is in the closed state, the cylinder end of the tube (7.1) protrudes outside the tube body of the cylindrical tube (2.1).

9. A mesh belt cleaning device for a nonwoven fabric forming production line according to claim 8, characterized in that, The vent (7.2) is a long opening, and a limiting rod (8) is provided in the vent (7.2) that penetrates vertically through the tube (7.1). The limiting rod (8) limits the axial travel of the tube (7.1) within the vent (4.1).

10. A mesh belt cleaning device for a nonwoven fabric forming production line according to claim 9, characterized in that, A rubber gasket (9) is fixed to the end face of the cylinder mouth end of the tube (7.1).

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