Papermaking pulp scraping device

Abstract

The utility model discloses a papermaking pulp scraping device which comprises linear driving devices located on the two sides of a paper forming groove body, a pulp scraping assembly is arranged at the driving ends of the linear driving devices and comprises a positioning plate fixedly connected with the driving ends, a positioning rod is arranged on the positioning plate, and the positioning rod is connected with the driving ends of the linear driving devices. A scraping part used for scraping paper pulp at the bottom of the paper forming groove is arranged between the positioning rods of the two paper pulp scraping assemblies. Compared with the prior art, the linear driving device can drive the scraping component to move, so that paper pulp adhered to grids of the filter screen can be scraped in time, and obvious salient points on wet paper sheets caused by dripping of the accumulated paper pulp which is increased in quantity are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of paper manufacturing, in particular to a papermaking pulp scraping device. Background Art

[0002] When making paper, the raw materials need to be cleaned, peeled, and cut. The processed raw materials are then placed in a scouring pot, and chemicals (such as caustic soda, sodium sulfide, etc.) are added and heated to boil to separate the fibers from impurities and soften the fibers. The pulp is then mixed with water to reach a concentration suitable for forming. The diluted pulp is then poured into a forming tank and filtered through a filter, allowing the pulp to form wet paper sheets on the conveyor below the filter.

[0003] When wet paper passes through the filter, a certain amount of pulp will adhere to the mesh. If the amount of adhered pulp is small and drips onto the wet paper, it will not cause obvious bulges on the wet paper. However, if the amount of pulp accumulated on the filter mesh is too much and drips onto the wet paper, it will cause obvious bulges on the wet paper, affecting the forming quality of the paper. Therefore, a papermaking pulp scraping device is urgently needed to solve the above problem. Utility Model Content

[0004] The main purpose of the utility model is to provide a papermaking pulp scraping device, in which a linear drive device can drive the scraping component to move, thereby timely scraping off the pulp adhering to the filter mesh, and avoiding the accumulation of pulp and dripping, which causes obvious bumps on the wet paper sheet.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A papermaking pulp scraping device includes a linear drive device located on both sides of a paper forming trough, a pulp scraping assembly is provided on the driving end of the linear drive device, the pulp scraping assembly includes a positioning plate fixedly connected to the driving end, a positioning rod is provided on the positioning plate, and a scraping component for scraping the pulp at the bottom of the paper forming trough is provided between the two groups of positioning rods of the pulp scraping assembly.

[0007] Furthermore, the scraping component is a wire.

[0008] Furthermore, the linear drive device is a linear motor.

[0009] Furthermore, the positioning rod is provided with a thread, and the positioning rod is threadedly connected to the positioning plate.

[0010] Furthermore, the positioning plate is threadedly connected to a locking screw for locking the positioning rod.

[0011] Furthermore, a through hole is provided at the bottom end of the positioning rod, and the scraping component passes through the through hole and is tied to the positioning rod.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The linear drive device of the utility model can drive the scraping component to move, so as to timely scrape off the pulp adhering to the filter mesh, avoid the volume of pulp accumulated on the filter mesh being too large, and avoid the pulp accumulation and dripping after the amount of pulp increases, resulting in obvious convex spots on the wet paper.

[0014] The positioning rod and positioning plate of the utility model are threadedly connected, so that the height of the positioning rod itself can be adjusted, thereby adjusting the distance between the scraping component and the filter screen to ensure that the pulp adhered to the filter screen grid will not form obvious convex spots on the wet paper sheets after being scraped off.

[0015] One end of the locking screw of the utility model can abut against the positioning rod, so that the height of the positioning rod can be fixed, thereby fixing the height of the scraping component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a papermaking pulp scraping device of the utility model.

[0017] Figure 2 This is a schematic diagram of the positions of a paper forming trough, a linear drive device and a pulp scraping assembly of a papermaking pulp scraping device of the utility model.

[0018] Figure 3 This is a schematic structural diagram of a pulp scraping assembly of a papermaking pulp scraping device of the present utility model.

[0019] In the figure: 1. paper forming trough; 101. filter screen; 2. linear drive device; 201. drive end; 3. pulp scraping assembly; 301. positioning plate; 3011. locking screw; 302. positioning rod; 3021. through hole; 303. scraping component. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-3As shown, a papermaking pulp scraping device includes a linear drive device 2 located on both sides of a paper forming trough 1, a pulp scraping assembly 3 is provided on the driving end 201 of the linear drive device 2, and the pulp scraping assembly 3 includes a positioning plate 301 fixedly connected to the driving end 201, a positioning rod 302 is provided on the positioning plate 301, and a scraping component 303 for scraping the pulp at the bottom of the paper forming trough 1 is provided between the positioning rods 302 of the two groups of pulp scraping assemblies 3.

[0022] In this embodiment, the linear drive device 2 is a linear motor. When making paper, pulp will fall into the paper forming trough 1, and then fall onto the conveying mechanism through the filter 101 to form a wet paper sheet. During this process, the pulp passing through the filter 101 should maintain a certain distribution uniformity to obtain a wet paper sheet with similar thickness at each position. However, when the paper passes through the filter 101, a certain amount of pulp will adhere to the grid of the filter 101. As the amount of pulp accumulation increases, it will drip onto the wet paper sheet, causing obvious convex spots to appear on the wet paper sheet. The linear drive device 2 of this device can drive the scraping component 303 to move, thereby timely scraping off the pulp adhering to the grid of the filter 101, avoiding the appearance of obvious convex spots on the wet paper sheet due to the increase in the amount of pulp accumulation and dripping.

[0023] The scraping member 303 is a linear body, preferably made of corrosion-resistant materials such as PVC. Its shape can be changed, and the contact area with the pulp is small, so the pulp will not adhere to the scraping member 303 too much, avoiding the pulp adhered to the scraping member 303 from dripping onto the wet paper sheet to form obvious bumps.

[0024] Among them, Figure 1 and Figure 2 As shown, the positioning rod 302 is provided with a thread, and the positioning rod 302 is threadedly connected to the positioning plate 301, so that the positioning rod 302 can be rotated to adjust its own height, thereby adjusting the distance between the scraping component 303 and the filter screen 101, ensuring that the pulp adhered to the grid of the filter screen 101 will not form obvious bumps on the wet paper after being scraped off.

[0025] Among them, Figure 1 and Figure 3 As shown, a locking screw 3011 is threadedly connected to the positioning plate 301 for locking the positioning rod 302 , and one end of the locking screw 3011 can abut against the positioning rod 302 , thereby fixing the height of the positioning rod 302 and thus fixing the height of the scraping component 303 .

[0026] Among them, Figure 2 and Figure 3As shown, a through hole 3021 is provided at the bottom end of the positioning rod 302 , and the scraping component 303 passes through the through hole 3021 and is tied to the positioning rod 302 . Therefore, a person can untie the scraping component 303 and replace it with a new one.

[0027] The working principle is that the pulp will fall into the paper forming trough 1, and then fall onto the conveying mechanism through the filter screen 101 to form a wet paper sheet. During this process, the two linear drive devices 2 can drive the scraping component 303 to move, so as to timely scrape off the pulp adhering to the mesh of the filter screen 101, and avoid the pulp accumulation and dripping, which will cause obvious convex spots on the wet paper sheet. In addition, by adjusting the height of the positioning rod 302, the distance between the scraping component 303 and the filter screen 101 can be adjusted to ensure that the pulp adhering to the mesh of the filter screen 101 will not form obvious convex spots on the wet paper sheet after being scraped off.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A papermaking pulp scraping device, comprising linear drive devices (2) located on both sides of a paper forming tank (1), characterized in that: A pulp scraping assembly (3) is provided on the driving end (201) of the linear drive device (2), the pulp scraping assembly (3) comprising a positioning plate (301) fixedly connected to the driving end (201), a positioning rod (302) being provided on the positioning plate (301), and a scraping component (303) for scraping pulp off the bottom of the paper forming trough (1) being provided between the two sets of positioning rods (302).

2. A papermaking pulp scraping device according to claim 1, characterized in that: The scraping component (303) is a linear body.

3. A papermaking pulp scraping device according to claim 1 or 2, characterized in that: The linear drive device (2) is a linear motor.

4. A papermaking pulp scraping device according to claim 3, characterized in that: The positioning rod (302) is provided with a thread, and the positioning rod (302) is threadedly connected to the positioning plate (301).

5. A papermaking pulp scraping device according to claim 4, characterized in that: The positioning plate (301) is threadedly connected to a locking screw (3011) for locking the positioning rod (302).

6. The papermaking pulp scraping device according to claim 3, characterized in that: A through hole (3021) is provided at the bottom end of the positioning rod (302), and the scraping component (303) passes through the through hole (3021) and is tied to the positioning rod (302).

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