Transverse knife purging structure of pulp slicing machine

Abstract

The utility model relates to the field of nitrocotton production equipment, in particular to a transverse knife purging structure of a pulp slicer, which has a better purging and cleaning effect on transverse knife grooves and comprises a dead knife and a transverse knife matched with the dead knife, and the transverse knife grooves are uniformly arranged on the periphery of the transverse knife. A transverse cutter left side bearing seat and a transverse cutter right side bearing seat are arranged at the two ends of a rotating shaft of the transverse cutter respectively, a left side nozzle and a right side nozzle are arranged on the transverse cutter left side bearing seat and the transverse cutter right side bearing seat respectively, and the left side nozzle and the right side nozzle are oppositely arranged. The first top-blowing nozzle and the second top-blowing nozzle are arranged over the middle section of the transverse cutter, the outlet direction of the first top-blowing nozzle and the outlet direction of the second top-blowing nozzle are arranged in the extending direction of the transverse cutter groove, and the outlet of the first top-blowing nozzle and the outlet of the second top-blowing nozzle are oppositely arranged. And the axis of the outlet of the first top-blowing nozzle is parallel to the axis of the outlet of the second top-blowing nozzle. The transverse knife purging device is suitable for transverse knife purging of the pulp slicing machine.

Description

Technical Field

[0001] The utility model relates to the field of nitrocellulose production equipment, in particular to a horizontal blade blowing structure of a pulp slicer. Background Art

[0002] Currently, pulp slicing machines are used to cut pulp coils into pulp flakes 1.5-2 mm wide and 6 mm long during pulp nitrocellulose production. Existing pulp slicing machines can cause pulp flakes to adhere to the cutting tools during cutting. This can cause the material to be cut multiple times, affecting its shape, leading to material accumulation, material extrusion and deformation, and tool sticking and jumping, which can damage the tool and equipment lifespan, severely impacting production efficiency and product quality. Furthermore, this adherence to the tools requires frequent tool cleaning and equipment maintenance, which not only reduces production efficiency but also increases production costs, hindering the green production of pulp nitrocellulose.

[0003] Patent application publication number CN104325495A discloses an automatic blade cleaning device for a rotary cutter, relating to the field of nitrocellulose production equipment. This solution provides an automatic blade cleaning device for a rotary cutter that can reduce sticking of material on the crosscutting blade. The automatic blade cleaning device for a rotary cutter includes a base blade and a crosscutting blade. The cutting area between the base blade and the crosscutting blade is the crosscutting area. High-pressure air nozzles are located at both ends of the crosscutting area, each nozzle capable of spraying air into the crosscutting area. A universal air nozzle with adjustable jet direction is located above the crosscutting blade, which sprays air into the crosscutting blade's groove. When the air nozzles at both ends of the crosscutting area spray high-pressure air for cleaning, due to improper nozzle direction settings, the air ejected from the two nozzles blows against each other, canceling out the air upon reaching the middle section of the crosscutting blade groove. This results in poor cleaning of the middle section of the crosscutting blade groove, resulting in unsatisfactory cleaning results. In addition, although the universal air nozzle can purge the top of the cross-cutting knife, the purging effect on the middle part of the cross-cutting knife groove is not ideal due to the unreasonable setting of the outlet. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pulp slicer cross-knife blowing structure which has a better blowing and cleaning effect on the cross-knife grooves.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: a pulp slicer cross-knife blowing structure includes a bottom knife and a cross-cutting knife coordinated with the bottom knife, cross-knife grooves are evenly arranged on the outer circumference of the cross-knife, a left cross-knife bearing seat and a right cross-knife bearing seat are respectively arranged at both ends of the cross-knife's rotating shaft, a left nozzle and a right nozzle are respectively arranged on the left cross-knife bearing seat and the right cross-knife bearing seat, the left nozzle and the right nozzle are arranged opposite each other, and the left nozzle and the right nozzle are arranged opposite each other, including a first top blowing nozzle and a second top blowing nozzle arranged just above the middle section of the cross-knife, the outlet directions of the first top blowing nozzle and the second top blowing nozzle are arranged along the extension direction of the cross-knife groove, the outlets of the first top blowing nozzle and the second top blowing nozzle are arranged opposite each other, and the axis of the outlet of the first top blowing nozzle and the axis of the outlet of the second top blowing nozzle are arranged parallel to each other. The present invention solves the defect that the left nozzle and the right nozzle are located at both ends of the cross-knife groove, which leads to poor blowing effect in the middle of the cross-knife groove. This solution features a first and second top-blowing nozzle positioned directly above the middle section of the crosscutting blade. These nozzles focus on cleaning the center of the crosscutting blade groove at the top of the crosscutting blade. The air outlets between the first and second nozzles are staggered to prevent the airflow from counteracting and canceling out. This allows the first and second nozzles to clean different crosscutting blade grooves, significantly improving the cleaning effect of the center of each crosscutting blade groove.

[0006] Furthermore, the outlets of the left and right nozzles are oriented toward the cross-cut grooves. By having the left and right nozzles purge the cross-cut grooves, the purge effect at both ends of the grooves is enhanced. The purge structure created by the left and right nozzles, along with the first and second top-blowing nozzles, ensures that both ends and the middle of each cross-cut groove are fully purged, significantly improving cleanliness.

[0007] Furthermore, the axis of the outlet of the left nozzle and the axis of the outlet of the right nozzle are arranged parallel to each other, thereby preventing the wind blown out of the left nozzle and the right nozzle from blowing against each other and canceling each other out, thereby improving the blowing effect.

[0008] Furthermore, the left nozzle, the right nozzle, the first top blowing nozzle and the second top blowing nozzle are all connected to the compressed air pipeline. By inputting compressed air, it is ensured that the material adhering to the cutter can be quickly blown away during the purging.

[0009] The beneficial effects of this utility model include: by adding first and second top-blowing nozzles, enhanced blowing is provided to the middle section of the cross-cutting blade groove, significantly improving the overall cleaning quality of the cross-cutting blade groove. Staggering the blowing directions of the left and right nozzles, and of the first and second top-blowing nozzles, prevents cross-blowing of the air, resulting in a more effective cleaning effect. This utility model is particularly suitable for use in the blowing of the cross-cutting blades of pulp slicers. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the arrangement positions of the left nozzle, the right nozzle, the first top blowing nozzle and the second top blowing nozzle of the utility model.

[0011] Figure 2 This is a schematic diagram showing that the first top blowing nozzle and the second top blowing nozzle of the present invention are arranged directly above the cross-cutting knife.

[0012] Marked in the figure are: bed knife 1, bed knife seat 11, cross-cutting knife 2, cross-cutting knife groove 21, cross-cutting knife left bearing seat 3, cross-cutting knife right bearing seat 4, left nozzle 5, right nozzle 6, compressed air pipeline 7, first top blowing nozzle 8, second top blowing nozzle 9. DETAILED DESCRIPTION

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] like Figure 1 、 Figure 2 The cross-knife blowing structure of the pulp slicer shown includes a bottom knife 1 set on a bottom knife seat 11, and a cross-cutting knife 2 matched with the bottom knife 1. A cross-cutting area is provided between the bottom knife 1 and the cross-cutting knife 2. The pulp coil to be cut passes through the cross-cutting area and is cut into pulp flake particles by the bottom knife 1 and the cross-cutting knife 2 for the subsequent production of pulp nitrocellulose. The cross-cutting knife 2 is cylindrical, and cross-knife grooves 21 are evenly provided on the cylindrical surface of the outer periphery of the cross-knife 2. The cross-knife grooves 21 extend along the axial direction of the cross-knife 2 as a whole. Each cross-knife groove 21 is an inwardly concave knife groove structure, and thus, residual pulp flake particles will adhere to the cross-knife groove 21. The focus of cleaning is to use the high-pressure gas of the compressed air pipe 7 to blow away the pulp flake particles in the cross-knife groove 21. A left-side bearing seat 3 and a right-side bearing seat 4 are provided at each end of the crosscutter 2. The ends of the rotating shaft of the crosscutter 2 are respectively disposed on the left-side bearing seat 3 and the right-side bearing seat 4, ensuring high-speed rotation of the crosscutter 2. A compressed air pipe 7 is connected to the left nozzle 5, the right nozzle 6, the first top-blowing nozzle 8, and the second top-blowing nozzle 9.

[0015] As for the specific nozzle structure, it includes a first top blowing nozzle 8, a second top blowing nozzle 9, a left nozzle 5 and a right nozzle 6. The left nozzle 5 is set on the left bearing seat 3 of the crosscutting knife, and the right nozzle 6 is set on the right bearing seat 4 of the crosscutting knife. The outlet direction of the left nozzle 5 and the right nozzle 6 is toward the crosscutting knife groove 21, and then the parts at both ends of the crosscutting knife groove 21 are purged respectively. Among them, as Figure 1 As shown, the left nozzle 5 has the best blowing effect at the upper part of the cross-cut groove 21 close to the left nozzle 5, and the right nozzle 6 has the best blowing effect at the lower part of the cross-cut groove 21 close to the right nozzle 6. In order to prevent the air blown out of the left nozzle 5 and the right nozzle 6, which are arranged opposite to each other, from blowing against each other and thus reducing the blowing effect, the axis of the outlet of the left nozzle 5 and the axis of the outlet of the right nozzle 6 can be arranged parallel to each other, that is, the outlet of the left nozzle 5 and the outlet of the right nozzle 6 are staggered so that the left nozzle 5 and the right nozzle 6 will not blow the same cross-cut groove 21 at the same time.

[0016] The left nozzle 5 and the right nozzle 6 can achieve a good blowing effect on the groove portion near both sides of the cross-cutting groove 21. For cleaning the middle section of the cross-cutting groove 21, the first top blowing nozzle 8 and the second top blowing nozzle 9 are required. The first top blowing nozzle 8 and the second top blowing nozzle 9 are arranged just above the middle section of the cross-cutting knife 2, and the outlet direction of the first top blowing nozzle 8 and the second top blowing nozzle 9 are arranged along the extension direction of the cross-cutting groove 21, as shown in FIG. Figure 1 and Figure 2 As shown, high-pressure gas can enter the first top-blowing nozzle 8 and the second top-blowing nozzle 9 through the compressed air pipe, and then be ejected from the first top-blowing nozzle 8 and the second top-blowing nozzle 9 to achieve a cleaning operation. Among them, the outlet of the first top-blowing nozzle 8 and the outlet of the second top-blowing nozzle 9 are arranged opposite to each other, and the axis of the outlet of the first top-blowing nozzle 8 and the axis of the outlet of the second top-blowing nozzle 9 are arranged parallel to each other. Similarly, the problem of back-blowing between the outlet of the first top-blowing nozzle 8 and the second top-blowing nozzle 9 can be prevented, thereby ensuring the cleaning effect. At this point, the entire part of the cross-knife groove 21 can be fully purged by the nozzles at the above four positions, which greatly improves the cleaning effect of the cross-knife groove 21.

Claims

1. A pulp slicer cross-knife blowing structure, comprising a bottom knife (1) and a cross-cutting knife (2) matched with the bottom knife (1), wherein cross-knife grooves (21) are evenly arranged on the outer periphery of the cross-cutting knife (2), a cross-cutting knife left bearing seat (3) and a cross-cutting knife right bearing seat (4) are respectively arranged at both ends of the rotating shaft of the cross-cutting knife (2), a left nozzle (5) and a right nozzle (6) are respectively arranged on the cross-cutting knife left bearing seat (3) and the cross-cutting knife right bearing seat (4), and the left nozzle (5) and the right nozzle (6) are arranged opposite to each other, characterized in that: The invention comprises a first top blowing nozzle (8) and a second top blowing nozzle (9) which are arranged directly above the middle section of the cross-cutting knife (2); the outlet directions of the first top blowing nozzle (8) and the second top blowing nozzle (9) are arranged along the extension direction of the cross-cutting knife groove (21); the outlet of the first top blowing nozzle (8) and the outlet of the second top blowing nozzle (9) are arranged opposite to each other; and the axis of the outlet of the first top blowing nozzle (8) and the axis of the outlet of the second top blowing nozzle (9) are arranged parallel to each other.

2. The pulp slicer horizontal blade blowing structure according to claim 1, characterized in that: The outlet directions of the left nozzle (5) and the right nozzle (6) are oriented toward the cross-cutting groove (21).

3. The pulp slicer horizontal blade blowing structure according to claim 2, characterized in that: The axis of the outlet of the left nozzle (5) and the axis of the outlet of the right nozzle (6) are arranged parallel to each other.

4. The pulp slicer cross-blade blowing structure according to any one of claims 1 to 3, characterized in that: The left nozzle (5), the right nozzle (6), the first top blowing nozzle (8) and the second top blowing nozzle (9) are all connected to the compressed air pipeline (7).

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