Papermaking pulping pressure screen fin rapid adjusting device

Abstract

A rapid adjusting device for fins of a pressure screen for papermaking and pulping is composed of a circular rotor frame, a plurality of fins and a plurality of fin adjusting units, each fin is connected with the circular rotor frame through the corresponding fin adjusting unit, and each fin adjusting unit comprises an adjusting lead screw, a sliding rod, a compression spring, an adjusting nut A and an adjusting nut B, one end of the adjusting lead screw is connected with the wing panel, and the other end of the adjusting lead screw is connected with the sliding rod through the adjusting nut A and the adjusting nut B. The sliding rod penetrates through the tail end of the circular rotor frame and is connected with the compression spring. According to the wing rapid adjusting device, only the nut on the outer side of the rotor frame needs to be adjusted, and the sliding rod part is adjusted under the action force of the compression spring on the inner side of the rotor frame, so that the gap between the rotor and the wing is rapidly and properly adjusted, and a pressurized screen is put into the papermaking production process as soon as possible.

Description

Technical Field

[0001] This utility model relates to the technical field of papermaking and pulping equipment, specifically to a rapid adjustment device for pressure screen blades in papermaking and pulping. Background Technology

[0002] Pulp screening is an essential process in papermaking, and pressure screens are crucial equipment for this process. Their basic components consist of screen plates and rotor blades. The type and size of these components determine the screening effect, capacity, and overall system operation. Pulp enters the screen drum tangentially, and the rotor blades provide further acceleration, increasing centrifugal and compressive forces. The pulp exits through the screen openings, while coarse impurities are discharged through the discharge port due to the scrubbing action of the rotor blades and gravity. A motor drives the rotor blades to rotate clockwise at high speed within the circular screen drum, propelling the pulp through the drum's gaps, thus completing the screening process. The highest point of the rotor blade cross-section is the part most frequently in contact with the pulp and is therefore subject to the most severe wear from the pulp and its impurities. As wear at this highest point increases, the gap between the rotor blades and the screen drum widens, affecting both the quantity and quality of pulp passing through, ultimately increasing papermaking costs and hindering the paper mill's profitability.

[0003] Therefore, the gap between the pressure screen blades and the inner wall of the screen drum needs to be adjusted. Currently, when adjusting the pressure screen blades, the adjustment can only be done by tightening nuts on both the inner and outer sides of the rotor frame. This is labor-intensive and time-consuming. The space inside the rotor frame is extremely limited, and the nuts need to be tightened and loosened on both the inner and outer sides of the rotor frame, which is very inconvenient for operators to perform the adjustment operation. This increases the difficulty of the work and extends the unnecessary working time. Utility Model Content

[0004] This invention provides a quick adjustment device for the blades of a pressure screen in papermaking and pulping, to solve the problem of time-consuming and labor-intensive adjustment of the pressure screen rotor blades in the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A rapid adjustment device for the blades of a pressure screen in papermaking and pulping comprises a circular rotor frame, several blades, and several blade adjustment units. Each blade is connected to the circular rotor frame through a corresponding blade adjustment unit. Each blade adjustment unit includes an adjustment screw, a slide rod, a compression spring, an adjustment nut A, and an adjustment nut B. One end of the adjustment screw is connected to the blade, and the other end of the adjustment screw is connected to the slide rod through the adjustment nut A and the adjustment nut B. The slide rod passes through the end of the circular rotor frame and is connected to the compression spring.

[0007] The slide bar surface is provided with a sliding sleeve, and a sliding sleeve reinforcing plate is provided between the sliding sleeve and the circular rotor frame.

[0008] The end of the aforementioned compression spring is connected to a flat washer.

[0009] This utility model's pressure screen blade quick adjustment device has a horizontal installation structure. When the gap between the blade and the screen drum needs to be reduced, loosen the adjusting nut A counterclockwise and turn the adjusting screw nut B clockwise. Under the force of adjusting screw nut B, the sliding rod moves towards the inner wall of the screen drum, thus reducing the gap between the blade and the screen drum. After determining the desired gap, tighten the adjusting nut A clockwise. If the gap between the blade and the screen drum needs to be increased, first loosen the adjusting nut A counterclockwise, then loosen the adjusting nut B counterclockwise. Simultaneously, due to the reaction force of the compression spring, the sliding rod moves in the opposite direction towards the inner wall of the screen drum, thus increasing the gap between the blade and the screen drum. After determining the desired gap, tighten the adjusting nut A clockwise. The entire adjustment process does not require consideration of the limited internal space of the circular rotor frame, making the adjustment process easy, quick, and efficient.

[0010] This utility model's quick blade adjustment device only requires adjusting the outer nut of the rotor frame, which, combined with the force of the inner compression spring of the rotor frame, adjusts the sliding rod, thereby quickly and appropriately adjusting the gap between the rotor blades. This allows the pressure screen to be put into the papermaking process as soon as possible, solving the problem of the small internal space of the circular rotor frame, which is not conducive to operation, and making the adjustment process easy, fast, and efficient. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 yes Figure 1 Schematic diagram of the structure of section BB;

[0014] Figure 3 yes Figure 2 An enlarged schematic diagram of region A in the middle.

[0015] In the diagram, 1 is a circular rotor frame, 2 is a blade, 3 is an adjusting screw, 4 is a sliding rod, 5 is a compression spring, 6 is a sliding sleeve reinforcing plate, 7 is the inner wall of the screen drum, 8 is adjusting screw nut A, 9 is adjusting screw nut B, 10 is a sliding sleeve, and 11 is a flat washer. Detailed Implementation

[0016] like Figure 1 , Figure 2 and Figure 3As shown, a rapid adjustment device for the blades of a pressure screen in papermaking and pulping comprises a circular rotor frame 1, several blades 2, and several blade adjustment units. Each blade 2 is connected to the circular rotor frame 1 through a corresponding blade adjustment unit. Each blade adjustment unit includes an adjusting screw 3, a sliding rod 4, a compression spring 5, an adjusting nut A8, and an adjusting nut B9. One end of the adjusting screw 3 is connected to the blade 2, and the other end of the adjusting screw 3 is connected to the sliding rod 4 through the adjusting nut A8 and the adjusting nut B9. The sliding rod 4 passes through the end of the circular rotor frame 1 and is connected to the compression spring 5. The end of the compression spring 5 is connected to a flat washer 11. A sliding sleeve 10 is provided on the surface of the sliding rod 4, and a sliding sleeve reinforcing plate 6 is provided between the sliding sleeve 10 and the circular rotor frame 1.

[0017] This utility model's pressure screen blade quick adjustment device has a horizontal installation structure. When the gap between the blade 2 and the screen drum needs to be adjusted to be smaller, loosen the adjusting nut A8 counterclockwise and turn the adjusting screw nut B9 clockwise. Under the force of the adjusting screw nut B9, the sliding rod 4 moves towards the inner wall 7 of the screen drum, thereby reducing the gap between the blade and the screen drum. After determining the required gap, tighten the adjusting nut A8 clockwise. When the gap between the blade and the screen drum needs to be adjusted to be larger, first loosen the adjusting nut A8 counterclockwise, then loosen the adjusting nut B9 counterclockwise. While loosening the adjusting nut B9, due to the reaction force of the compression spring 5, the sliding rod 4 will move in the opposite direction towards the inner wall 7 of the screen drum, thereby increasing the gap between the blade and the screen drum. After determining the required gap, tighten the adjusting nut A8 clockwise. The entire adjustment process does not need to consider the problem of the small internal space of the circular rotor frame, which is not conducive to operation, making the adjustment process easy, quick, and efficient.

Claims

1. A quick adjustment device for the blade of a papermaking pulping pressure screen, characterized in that The application is composed of a circular rotor holder, a plurality of blades and a plurality of blade adjusting units, each blade is connected with the circular rotor holder through a corresponding blade adjusting unit, each blade adjusting unit comprises an adjusting screw, a sliding rod, a compression spring, an adjusting nut A and an adjusting nut B, one end of the adjusting screw is connected with the blade, the other end of the adjusting screw is connected with the sliding rod through the adjusting nut A and the adjusting nut B, and the sliding rod is connected with the compression spring through the end of the circular rotor holder.

2. The quick adjustment device for the wing of a papermaking pulping pressure screen according to claim 1, characterized in that A sliding sleeve is arranged on the surface of the sliding rod, and a sliding sleeve reinforcing plate is arranged between the sliding sleeve and the circular rotor holder.

3. The quick adjustment device for the wing of a papermaking pulping pressure screen according to claim 1, characterized in that The end of the compression spring is connected with a flat pad.

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