Automatic raw material screening device

Abstract

The utility model discloses an automatic raw material screening device which comprises a screening box and a screening frame capable of moving up and down in the screening box in a reciprocating mode in the vertical direction, the screening frame is provided with a notch, a screening plate is detachably installed in the notch, and rotary knobs are rotationally arranged at the four corners of the top of the screening frame. The rotary knob abuts against the top of the sieve plate and is used for limiting and fixing the sieve plate. According to the paper pulp screening device, the screening plate and the screening frame are detachably installed, after paper pulp screening work is completed, the screening plate is independently detached and then cleaned, residual paper pulp on the surface is removed, cleanliness of the screening plate is guaranteed, screening holes in the surface of the screening plate are prevented from being blocked, and it is guaranteed that the screening device can be normally used next time; and the sieve plate can be replaced according to the actual processing quality requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of paper processing, in particular to an automatic raw material screening device. Background Technique

[0002] Pulp screening is one of the key steps in the pulp processing process, which is used to remove impurities, adjust the fiber length and control the fiber dispersion degree, so as to improve the quality of paper.

[0003] A pulp impurity screening device disclosed in Patent Application No. 202022279640.4, in which a lifting device lifts the screen, and a scraping plate moves from one end of the screen close to the pulp outlet pipe to the end far from the pulp outlet pipe to clean the surface of the screen.

[0004] The cleaning effect of this cleaning method is limited, a large amount of pulp remains on the screen, and the screen cannot be replaced, which cannot meet different actual production requirements, so it is urgent to change. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides an automatic raw material screening device, which solves the problems put forward in the above background technique.

[0007] (II) Technical Solutions

[0008] To achieve the above object, the utility model is realized through the following technical solutions: an automatic raw material screening device, including a screening box and a screening frame that can reciprocate up and down inside the screening box along the vertical direction. The screening frame has a notch, and a screen plate is detachably installed inside the notch. Four corners of the top of the screening frame are rotatably provided with knobs, and the knobs are in contact with the top of the screen plate to limit and fix the screen plate.

[0009] Preferably, rectangularly distributed positioning grooves are opened at the bottom of the screen plate, and a first spring is fixedly connected inside the positioning grooves. The first spring is in contact with the inner wall of the notch.

[0010] Preferably, a connecting frame is fixedly connected to the top of the screening frame, a bracket is fixedly connected to the side wall of the screening box, two symmetrically distributed guide rods are fixedly connected to the top of the connecting frame, the upper ends of the guide rods movably penetrate through the bracket, and a second spring is fixedly connected between the bracket and the connecting frame. The second spring is sleeved on the guide rod.

[0011] Preferably, a motor is fixedly installed on the bracket, and a cam is fixedly connected to the output end of the motor. The cam is in contact with the connecting frame.

[0012] Preferably, the inner bottom wall of the screening box has a slope, and the side of the slope close to the bracket is slightly lower.

[0013] Preferably, the sieve plate is made of either a metal plate or a plastic plate.

[0014] (III) Beneficial effects

[0015] The utility model provides an automatic raw material screening device, which has the following beneficial effects:

[0016] 1. In the utility model, the sieve plate and the screening frame are detachably installed. After the screening work of the pulp is completed, the sieve plate is separately disassembled and then cleaned to remove the residual pulp on the surface, ensuring the cleanliness of the sieve plate, preventing the sieve holes on the surface of the sieve plate from being blocked, and ensuring normal use next time; and the sieve plate can also be replaced according to the actual processing quality requirements.

[0017] 2. In the utility model, the sieve plate is arranged in the notch of the screening frame and is tightly fixed by four knobs. When disassembling, rotate the knobs to separate from the surface of the sieve plate, and the first spring releases its elastic force to push the sieve plate upward and move out from the inside of the notch, which is convenient for disassembling the sieve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a left perspective view structural diagram of an automatic raw material screening device proposed by the utility model;

[0019] Figure 2 is a right perspective view structural diagram of an automatic raw material screening device proposed by the utility model;

[0020] Figure 3 is a sectional view structural diagram of an automatic raw material screening device proposed by the utility model;

[0021] Figure 4 is Figure 3 the enlarged structural diagram at A of

[0022] In the figure: 1. Screening box; 101. Slope; 2. Screening frame; 201. Notch; 3. Sieve plate; 301. Positioning groove; 4. Knob; 5. First spring; 6. Connecting frame; 7. Guide rod; 8. Second spring; 9. Bracket; 10. Cam; 11. Motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments.

[0024] Please refer to Figures 1 to 4, the present utility model provides a technical solution: an automatic raw material screening device, including a screening box 1 and a screening frame 2 that can reciprocate up and down inside the screening box 1 along the vertical direction. The screening frame 2 has a notch 201, and a sieve plate 3 is detachably installed inside the notch 201. Four corners at the top of the screening frame 2 are all rotatably provided with knobs 4, and the knobs 4 are in contact with the top of the sieve plate 3 to limit and fix the sieve plate 3.

[0025] The sieve plate 3 and the screening frame 2 adopt a detachable installation method. After the screening work of the pulp is completed, the sieve plate 3 is detached separately and then cleaned to remove the residual pulp on the surface, ensuring the cleanliness of the sieve plate 3, preventing the sieve holes on the surface of the sieve plate 3 from being blocked, and ensuring normal use next time; and the sieve plate 3 can also be replaced according to the actual processing quality requirements, and sieve plates 3 of other specifications can be used.

[0026] In addition, rectangularly distributed positioning grooves 301 are opened at the bottom of the sieve plate 3, and a first spring 5 is fixedly connected inside the positioning grooves 301. The first spring 5 is in contact with the inner wall of the notch 201.

[0027] The sieve plate 3 is arranged in the notch 201 of the screening frame 2 and is pressed and fixed by four knobs 4. When disassembling, rotate the knobs 4 to separate from the surface of the sieve plate 3, and the first spring 5 releases its elastic force to push the sieve plate 3 upward and move it out of the notch 201, which is convenient for disassembling the sieve plate 3.

[0028] In order to vibrate the sieve plate 3 and avoid blockage during pulp screening, a connecting frame 6 is fixedly connected to the top of the screening frame 2, a support 9 is fixedly connected to the side wall of the screening box 1, two symmetrically distributed guide rods 7 are fixedly connected to the top of the connecting frame 6, the upper ends of the guide rods 7 are movably penetrated through the support 9, and a second spring 8 is fixedly connected between the support 9 and the connecting frame 6. The second spring 8 is sleeved on the guide rod 7.

[0029] A motor 11 is fixedly installed on the support 9, and a cam 10 is fixedly connected to the output end of the motor 11. The cam 10 is in contact with the connecting frame 6.

[0030] Start the motor 11 to drive the cam 10 to rotate. The long end of the cam 10 squeezes the connecting frame 6, causing the screening frame 2 and the sieve plate 3 to descend. When the short end of the cam 10 squeezes towards the connecting frame 6, the second spring 8 pulls the connecting frame 6 upward. At this time, the screening frame 2 and the sieve plate 3 move upward. In this way, reciprocatingly, the vibration of the sieve plate 3 is realized, and the qualified pulp passes through the sieve holes of the sieve plate 3.

[0031] The inner bottom wall of the screening box 1 has a slope 101, and the side of the slope 101 close to the support 9 is slightly lower.

[0032] The qualified pulp falls on the slope 101 and flows from high to low along the slope 101.

[0033] The sieve plate 3 is made of either a metal plate or a plastic plate. The metal plate usually has high wear resistance and corrosion resistance, and can maintain a good screening effect for a long time; the plastic plate is lighter than the metal plate, which is convenient for installation and maintenance, and at the same time reduces the self-weight of the equipment.

[0034] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model, and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A raw material automatic screening device, characterized in that: The invention comprises a screening box (1), and a screening frame (2) capable of reciprocating up and down in the screening box (1) along a vertical direction, wherein the screening frame (2) has a notch (201), a screening plate (3) is detachably mounted inside the notch (201), and knobs (4) are rotatably arranged at the four corners of the top of the screening frame (2), the knobs (4) are in contact with the top of the screening plate (3) and are used to limit and fix the screening plate (3).

2. The automatic raw material screening device according to claim 1, characterized in that: The bottom of the sieve plate (3) is provided with rectangular positioning grooves (301), the interior of which is fixedly connected with a first spring (5), and the first spring (5) is in contact with the inner wall of the recess (201).

3. The automatic raw material screening device according to claim 1, characterized in that: The top of the screening frame (2) is fixedly connected to a connecting frame (6), the side wall of the screening box (1) is fixedly connected to a bracket (9), the top of the connecting frame (6) is fixedly connected to two symmetrically distributed guide rods (7), the upper ends of the guide rods (7) are movably inserted through the bracket (9), a second spring (8) is fixedly connected between the bracket (9) and the connecting frame (6), and the second spring (8) is sleeved on the guide rods (7).

4. The automatic raw material screening device according to claim 3 is characterized in that: A motor (11) is fixedly mounted on the bracket (9), a cam (10) is fixedly connected to the output end of the motor (11), and the cam (10) is in contact with the connection frame (6).

5. The automatic raw material screening device according to claim 1, characterized in that: The inner bottom wall of the screening box (1) has a slope (101).

6. The automatic raw material screening device according to claim 1, characterized in that: The sieve plate (3) is made of either a metal plate or a plastic plate.

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