Split type air uniformizing plate and non-woven fabric lapper lower air suction box thereof

Abstract

The utility model relates to a split type air uniformizing plate and a lower air suction box of a non-woven fabric lapper, and the split type air uniformizing plate comprises an upper air uniformizing plate and a lower air uniformizing plate, longitudinal net wires which are evenly distributed in parallel at intervals are arranged in the upper air uniformizing plate. Transverse net lines which are evenly distributed in parallel at intervals are arranged in the lower air uniformizing plate. The lower air uniformizing plate is mounted at an air suction opening of the lower air suction box; the lower side face of the upper air uniformizing plate is connected with the upper side face of the lower air uniformizing plate, the longitudinal net lines and the transverse net lines are arranged in a staggered mode, and the split type air uniformizing plate forms rhombic air holes of the same shape and size. The air uniformizing plate is composed of the upper air uniformizing plate and the lower air uniformizing plate, and the structure is simple; the upper air uniformizing plate and the lower air uniformizing plate are separated, dead angles can be eliminated, and cleaning is convenient; and the joints of the longitudinal net wires and the transverse net wires do not need to be welded, so that the rhombic air hole structure formed by the longitudinal net wires and the transverse net wires is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of non-woven web-forming machines, in particular to a split-type air-uniform plate and a lower suction air box of a non-woven web-forming machine. Background Art

[0002] There is a non-woven web-forming machine that uses air-laid technology. Specifically, the wood pulp fiberboard is opened into a single fiber state, and then the fibers are agglomerated on the mesh curtain by an air flow method, and the fiber web is then reinforced into cloth.

[0003] The down-suction bellows is the driving device for the fibers to agglomerate on the mesh curtain. Under the action of the fan, the down-suction bellows forms a negative pressure zone under the mesh belt of the web-forming machine, so that the fibers adhere to the mesh curtain.

[0004] In order to ensure that the air suction port of the lower suction box can form an air flow with uniform flow rate and air volume, Chinese patent CN215856651U discloses a new type of non-woven web forming machine suction device, the air suction port of which is equipped with an upper uniform air plate. Figure 2 As shown, the upper air uniforming plate includes a rectangular frame, inside which a plurality of mesh wires are arranged at intervals and crosswise, so that the upper air uniforming plate forms a plurality of diamond-shaped mesh holes.

[0005] The aforementioned intersecting mesh cables generally involve two fabrication processes: First, parallel, spaced horizontal cables are welded within the frame, followed by longitudinal cables on either side of the horizontal cables. Second, parallel, spaced horizontal cables are welded within the frame, followed by coplanar longitudinal cables between the horizontal cables. Both of these welding processes are complex and labor-intensive. Furthermore, the welds at the junctions of the horizontal and vertical cables create significant deformation, leading to unstable mesh shape and affecting airflow and volume uniformity. Furthermore, the junctions between the horizontal and vertical cables can easily create dead spots where fibers can become stuck, making them difficult to clean. Utility Model Content

[0006] In order to solve the technical problems in the background technology, the utility model discloses a split-type air uniforming plate and a lower suction air box of a non-woven web-forming machine.

[0007] The utility model provides a split type air uniform plate, comprising an upper air uniform plate and a lower air uniform plate;

[0008] The upper air uniformity plate is equipped with parallel, spaced and evenly distributed longitudinal mesh wires;

[0009] The lower air uniformity plate is equipped with parallel, spaced and evenly distributed horizontal mesh wires;

[0010] The lower air uniforming plate is installed at the air inlet of the lower air suction box;

[0011] The lower side of the upper uniform air plate is connected with the upper side of the lower uniform air plate, wherein the longitudinal net lines and the transverse net lines are arranged in an interlaced manner, and the upper uniform air plate and the lower uniform air plate constitute a rhombic air hole with the same shape and size.

[0012] The setting has the beneficial effects that: 1, the uniform air plate is composed of the upper uniform air plate and the lower uniform air plate, and the structure is simple and convenient for processing; 2, when the fiber card is at the connection of the longitudinal net line and the transverse net line, only the upper uniform air plate and the lower uniform air plate need to be separated, so that the dead angle can be eliminated and cleaning is facilitated; 3, the connection of the longitudinal net line and the transverse net line does not need to be welded, so that the rhombic air hole structure formed by the longitudinal net line and the transverse net line is stable, and the airflow velocity and the air volume of the air inlet are more uniform.

[0013] The uniform air plate is generally fixed at the air inlet by welding, and replacement is difficult, and further improvement is that: the upper uniform air plate is provided with a rectangular upper frame body, and the longitudinal net line is arranged in the upper frame body; the lower uniform air plate is provided with a rectangular lower frame body, and the transverse net line is arranged in the lower frame body; the lower frame body is covered on the air inlet of the lower air suction box; and the upper frame body is covered on the lower frame body. Since the airflow at the air inlet is from top to bottom, the lower frame body and the upper frame body are installed in a covering mode from top to bottom, and are not easy to be separated from the air inlet.

[0014] Further, the transverse net line is arranged at the upper end of the lower frame body, and the longitudinal net line is arranged at the upper end of the upper frame body. The setting has the beneficial effects that: 1, the contact area of the lower frame body with the air inlet is larger, and the contact area of the upper frame body with the lower frame body is also larger, so that the installation stability of the lower frame body and the upper frame body is higher; 2, after the upper uniform air plate and the lower uniform air plate are installed, the lower side of the longitudinal net line is attached to the upper side of the transverse net line, so that the rhombic air hole structure formed thereby is more complete.

[0015] The utility model also provides a non - woven fabric net machine lower air suction box, including the box body, its upper end is the air inlet, the air inlet is installed with a split type uniform air plate. The performance of the lower air suction box is better, and the netting quality is also higher.

[0016] Since the fiber is easy to enter the box body under the action of negative pressure and enter the fan along the air duct, the fan is damaged, and further improvement is that: a horizontally arranged filter plate is installed at the position close to the air inlet of the box body, the filter plate is a mesh plate, the outer side of the filter plate is connected with the inner side of the box body, and the filter plate is used for filtering the fiber entering the box body.

[0017] When excessive fibers accumulate on the filter plate, the mesh can easily become clogged, affecting the airflow velocity and volume at the air intake, ultimately impacting the quality of the non-woven fabric. Therefore, the filter plate requires regular cleaning. Conventional filter plates are welded to the housing, making cleaning difficult. This is a further improvement: the filter plate is inserted into the housing via a horizontal movement, making it removable. This arrangement allows for easy removal and cleaning of the filter plate when excessive fibers accumulate, and can then be reinserted into the housing.

[0018] The structure of the filter plate inserted into the housing makes the position of the filter plate unstable after insertion. Based on this, a further improvement is to install two symmetrical support plates on the inner wall of the housing, with their length extending in the direction of movement of the filter plate. The filter plate is placed on the upper end of the support plates. This arrangement ensures that the filter plate is always supported by the support plates during insertion and removal.

[0019] When the filter plate is disassembled and assembled, it slides and rubs against the support plate, which causes large friction, making disassembly and assembly difficult, making large noises, and easily causing wear. Based on this, further improvements are made in that multiple rollers are installed at both ends of the filter plate; the rollers are rollingly connected to the upper end surface of the support plate.

[0020] When the filter plate is removed for cleaning, the nonwoven web forming machine needs to stop, which affects production efficiency. Based on this, a further improvement is to set up insertion holes at the same height on both sides of the box in the direction of filter plate insertion. With this arrangement, when the filter plate needs to be cleaned, another clean filter plate is inserted into the box through the other insertion hole, and the filter plate to be cleaned is pushed out of the box. In this way, the nonwoven web forming machine does not need to stop and can continue to operate stably.

[0021] The setting of the support plate will block the airflow and affect the flow rate and air volume of the airflow. Based on this, a further improvement is that the support plate is a mesh plate.

[0022] The beneficial effects of the present invention are: 1. The air uniform plate is composed of an upper air uniform plate and a lower air uniform plate, which has a simple structure and is easy to process and form; 2. When fibers are stuck in the connection between the longitudinal mesh wire and the transverse mesh wire, it is only necessary to separate the upper air uniform plate and the lower air uniform plate to eliminate dead angles and facilitate cleaning; 3. The connection between the longitudinal mesh wire and the transverse mesh wire does not need to be welded, so that the diamond-shaped air hole structure formed by the longitudinal mesh wire and the transverse mesh wire is stable, and the air flow velocity and air volume at the air intake port are more uniform; 3. The setting of the filter plate can prevent fibers from entering the fan along the air duct and causing damage to the fan; 4. The filter plate is detachable for easy cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a structural diagram of the lower suction box of a non-woven web-forming machine;

[0025] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 This is a structural diagram of the lower suction box of the non-woven web forming machine from another perspective;

[0027] Figure 4 This is a top view of the lower suction box of the non-woven web-forming machine;

[0028] Figure 5 yes Figure 4 Cross-sectional view of the middle BB;

[0029] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0030] Figure 7 yes Figure 5 Enlarged view of point D in the middle;

[0031] Figure 8 yes Figure 5 Cross-sectional view of EE;

[0032] Figure 9 This is a schematic diagram of the structure after the upper air uniform plate and the lower air uniform plate are separated;

[0033] Figure 10 It is a structural diagram of the filter plate;

[0034] In the figure: 1. Upper air uniformity plate; 2. Lower air uniformity plate; 3. Longitudinal network cable; 4. Horizontal network cable; 5. Upper frame; 6. Lower frame; 7. Air inlet; 8. Box; 9. Filter plate; 10. Support plate; 11. Roller; 12. Plug hole; 13. Cover plate. DETAILED DESCRIPTION

[0035] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0036] Example 1:

[0037] like Figure 9 As shown, the present invention discloses a split air uniformizer, comprising an upper air uniformizer 1 and a lower air uniformizer 2. The upper air uniformizer 1 is provided with a rectangular upper frame 5, within which are disposed parallel, spaced, and evenly distributed longitudinal mesh wires 3. The lower air uniformizer 2 is provided with a rectangular lower frame 6, within which are disposed parallel, spaced, and evenly distributed transverse mesh wires 4.

[0038] likeFigures 1-5 As shown, the nonwoven web-forming machine's lower suction box includes a box body 8, the upper end of which is provided with a rectangular suction port 7. The lower frame body 6 is arranged to cover the outer side of the suction port 7 from top to bottom, and the upper end of the suction port 7 abuts the lower side of the transverse mesh wires 4. The upper frame body 5 is arranged to cover the outer side of the lower frame body 6 from top to bottom, and the lower side of the longitudinal mesh wires 3 abuts the upper side of the transverse mesh wires 4, so that the longitudinal mesh wires 3 and the transverse mesh wires 4 are arranged in a staggered manner, and the present embodiment forms diamond-shaped air holes of the same shape and size.

[0039] Compared with the prior art, the beneficial effects of this embodiment are: 1. The air uniform plate is composed of an upper air uniform plate 1 and a lower air uniform plate 2, which has a simple structure and is easy to process and form; 2. When the fiber is stuck at the connection between the longitudinal mesh wire 3 and the transverse mesh wire 4, it is only necessary to separate the upper air uniform plate 1 and the lower air uniform plate 2 to eliminate the dead angle, which is convenient for cleaning; 3. The connection between the longitudinal mesh wire 3 and the transverse mesh wire 4 does not need to be welded, so that the diamond-shaped air hole structure formed by the longitudinal mesh wire 3 and the transverse mesh wire 4 is stable, and the air flow rate and air volume of the air intake port 7 are more uniform; 4. The air uniform plate is easy to disassemble and replace; 5. Since the air flow at the air intake port 7 is from top to bottom, the lower frame 6 and the upper frame 5 are installed in a top-down covering manner, and are not easy to detach from the air intake port 7.

[0040] The horizontal mesh cable 4 is installed at the upper end of the lower frame 6, and the vertical mesh cable 3 is installed at the upper end of the upper frame 5. This arrangement has the following beneficial effects: 1. The contact area between the lower frame 6 and the air inlet 7 is larger, and the contact area between the upper frame 5 and the lower frame 6 is also larger, thereby improving the installation stability of the lower frame 6 and the upper frame 5; 2. After the upper and lower air uniform plates 1 and 2 are installed, the lower side of the vertical mesh cable 3 is aligned with the upper side of the horizontal mesh cable 4, making the diamond-shaped air hole structure they form more complete.

[0041] Example 2:

[0042] The present invention also discloses a downdraft box for a nonwoven web-forming machine, comprising a box body 8, an air inlet 7 at the upper end of which is provided with a split-type air uniforming plate according to the first embodiment. With this arrangement, the downdraft box has better performance and higher web quality.

[0043] A horizontally arranged filter plate 9 is installed near the air suction port 7 of the box 8. The filter plate 9 is a mesh plate, the outer side of which is connected to the inner side of the box 8 and is used to filter the fibers entering the box 8.

[0044] When too many fibers are adsorbed on the filter plate 9, the mesh is easily clogged, which affects the flow rate and air volume of the air inlet 7 and ultimately the quality of the non-woven fabric. Therefore, the filter plate 9 needs to be cleaned regularly. Conventional filter plates 9 are fixed to the box 8 by welding, which makes cleaning difficult. Therefore, the following design is adopted: the filter plate 9 is inserted into the box 8 by horizontal movement, making the filter plate 9 removable. This arrangement allows the filter plate 9 to be removed and cleaned easily when too many fibers are adsorbed on the filter plate 9. After cleaning, it can be reinserted into the box 8.

[0045] The specific installation structure of the filter plate 9 is as follows: two symmetrically arranged support plates 10 are installed on the front and back sides of the inner wall of the box body 8, and a plug hole 12 is opened on the left side. The outer end of the filter plate 9 is connected to the blocking plate and the handle in sequence, and the inner end passes through the plug hole 12. Figure 7 and Figure 10 As shown, rollers 11 are mounted on either side of the filter plate 9. During insertion, rollers 11 roll in contact with the upper side of the support plate 10. These rollers reduce friction between the filter plate 9 and the support plate 10, facilitating insertion and removal. They also reduce noise and wear. When the filter plate 9 needs cleaning, it can be conveniently removed and then reinserted into the housing 8.

[0046] like Figure 8 As shown, support plate 10 is also a mesh plate to prevent it from obstructing airflow and affecting airflow velocity and volume. Because fibers can enter the mesh of support plate 10, making them difficult to clean, the air intake vent 7 of housing 8 is designed with a tapered shape. In a top view of housing 8, support plate 10 is positioned outside of air intake vent 7, so that fibers are only adsorbed on filter plate 9 and not on support plate 10.

[0047] The right side of the box body 8 is also provided with a plug hole 12, and the two plug holes 12 are at the same height. When the filter plate 9 needs to be pulled out for cleaning, another clean filter plate 9 is inserted into the box body 8 through the other plug hole 12, and the filter plate 9 to be cleaned is pushed out of the box body 8. In this way, the nonwoven web forming machine does not need to be shut down and can continue to operate stably.

[0048] like Figure 7 As shown, one of the plug holes 12 is blocked by a blocking plate, as shown in FIG. Figure 6 As shown, the other plug hole 12 is blocked by a sealing plate 13, thereby preventing the box body 8 from communicating with the outside and affecting the airflow.

[0049] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A split air uniformity plate, characterized by: It comprises an upper air uniform plate (1) and a lower air uniform plate (2); The upper air uniforming plate (1) is provided with parallel, spaced, and evenly distributed longitudinal mesh wires (3); The lower air uniforming plate (2) is provided with parallel, spaced, and evenly distributed transverse mesh wires (4); The lower air uniforming plate (2) is installed at the air suction port (7) of the lower air suction box; The lower side surface of the upper air uniform plate (1) is connected to the upper side surface of the lower air uniform plate (2), wherein the longitudinal mesh wires (3) and the transverse mesh wires (4) are arranged in a staggered manner, so that the split air uniform plate forms diamond-shaped air holes of the same shape and size.

2. The split air uniforming plate according to claim 1, characterized in that: The upper air uniforming plate (1) is provided with a rectangular upper frame (5), and the longitudinal network wire (3) is provided in the upper frame (5); The lower air uniforming plate (2) is provided with a rectangular lower frame (6), and the transverse network cable (4) is provided in the lower frame (6); The lower frame (6) is covered on the air suction port (7) of the lower air suction box; The upper frame (5) is covered on the lower frame (6).

3. The split air uniforming plate according to claim 2, characterized in that: The transverse network cable (4) is arranged at the upper end of the lower frame (6); The longitudinal network cable (3) is arranged at the upper end of the upper frame (5).

4. A bottom suction air box for a nonwoven web-forming machine, characterized by: It comprises a box body (8), the upper end of which is an air suction port (7); the air suction port (7) is provided with a split-type air uniforming plate as described in any one of claims 1 to 3.

5. The bottom suction box of the nonwoven web-forming machine according to claim 4, characterized in that: A horizontally arranged filter plate (9) is installed near the air inlet (7) of the box (8). The filter plate (9) is a mesh plate, the outer side of which is connected to the inner side of the box (8) and is used to filter fibers entering the box (8).

6. The bottom suction box of the nonwoven web-forming machine according to claim 5, characterized in that: The filter plate (9) is inserted into the box body (8) in a horizontally movable manner, so that the filter plate (9) is detachable.

7. The bottom suction box of the nonwoven web-forming machine according to claim 6, characterized in that: Two symmetrically arranged support plates (10) are installed on the inner wall of the box (8), and their length directions extend in the moving direction of the filter plate (9); The filter plate (9) is arranged on the upper end of the support plate (10).

8. The bottom suction box of the nonwoven web-forming machine according to claim 7, characterized in that: A plurality of rollers (11) are also installed at both ends of the filter plate (9); the rollers (11) are rollingly connected to the upper end surface of the support plate (10).

9. The bottom suction box of the nonwoven web-forming machine according to claim 8, characterized in that: The box body (8) is provided with plugging holes (12) at the same height on both sides of the plugging direction of the filter plate (9).

10. The bottom suction box of the nonwoven web-forming machine according to claim 7, characterized in that: The support plate (10) is a mesh plate.

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