Multifunctional papermaking pulp pressure screen

Abstract

The utility model provides a multifunctional papermaking pulp pressurized screen which comprises a machine box, a discharging valve is connected to an opening in the lower portion of the machine box through a flange, a feeding valve is connected to a feeding port in the upper portion of the machine box through a flange, an inner box body is arranged in the machine box, and connecting columns are fixedly installed on the two sides between the inner box body and the machine box. And a barrel-shaped filter screen is fixedly mounted in the middle of the lower side in the inner box body. Due to the arrangement of the piston body, the air cylinder, the valve, the annular piece and the connecting rod, pressure can be applied to slurry, and therefore the sieving efficiency of the slurry is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking equipment, and particularly relates to a multifunctional papermaking pulp pressure screen. Background Art

[0002] At present, when processing pulp, it is usually necessary to use a pressure screen to screen the pulp. The existing papermaking pulp pressure screen includes a processing tank. A waste discharge pipe with a solenoid valve is fixed at the central discharge port at the bottom of the processing tank. A feed pipe is fixed at the feed port at the top of the processing tank. A feed hopper is fixed at the top of the feed pipe. A rotating plate one is rotatably connected to the outside of the feed pipe through a bearing. A filter cylinder is fixed at the bottom of the rotating plate one. When this kind of papermaking pulp pressure screen is used, it screens according to the self-gravity of the pulp, and its screening efficiency is relatively low. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a multifunctional papermaking pulp pressure screen, which can apply pressure to the pulp to increase its screening efficiency.

[0004] Wherein the utility model is realized through the following technical solutions:

[0005] A multifunctional papermaking pulp pressure screen includes a machine case. A discharge valve is flange-connected to the lower opening of the machine case. A feed valve is flange-connected to the feed port at the upper part of the machine case. An inner box body is arranged inside the machine case. Connecting columns are fixedly installed on both sides between the inner box body and the machine case. A barrel-shaped filter screen is fixedly installed at the middle part of the lower side inside the inner box body. A through hole is opened at the middle part of the lower part of the inner box body. The through hole enables the pulp flowing out of the barrel-shaped filter screen to enter the machine case. The machine case is equipped with a lifting piston assembly. The lifting piston assembly includes a piston body. The piston body is hermetically and slidably arranged inside the inner box body. And air cylinders are arranged side by side at the upper part of the piston body. The output rod of the air cylinder is fixedly installed with the piston body. The two air cylinders are respectively fixedly installed on both sides of the upper part of the machine case. The upper part of the piston body is concave-shaped. And a valve is fixedly installed in the through hole opened at the middle part of the piston body. An annular member is arranged at the lower part of the piston body.

[0006] Preferably, a maintenance cover is detachably installed on one side of the machine case.

[0007] Preferably, a connecting rod is fixedly installed between the piston body and the annular member.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0009] 1. In the utility model, the piston body, the air cylinder, the valve, the annular member and the connecting rod are arranged, which is beneficial to applying pressure to the pulp to increase its screening efficiency.

[0010] 2. In the present utility model, the arrangement of the barrel-shaped filter screen is conducive to sieving the pulp, and compared with the plate-shaped filter screen, it increases the filtering area, thereby increasing the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural view of the present utility model.

[0012] Figure 2 is a schematic structural view of the interior of the chassis of the present utility model.

[0013] Figure 3 is a schematic structural view of the lifting piston assembly of the present utility model.

[0014] In the figure:

[0015] 1, chassis; 11, discharge valve; 12, feed valve; 13, inspection cover; 2, inner box; 21, barrel-shaped filter screen; 22, connecting column; 3, lifting piston assembly; 31, piston body; 32, cylinder; 33, valve; 34, annular member; 35, connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present utility model will be specifically described below with reference to the accompanying drawings. As shown in the accompanying Figure 1 and the accompanying Figure 2 A multifunctional papermaking pulp pressure screen includes a chassis 1. A discharge valve 11 is flange-connected to the lower opening of the chassis 1, a feed valve 12 is flange-connected to the upper feed port of the chassis 1, an inspection cover 13 is detachably installed on one side of the chassis 1, an inner box 2 is arranged inside the chassis 1, connecting columns 22 are fixedly installed on both sides between the inner box 2 and the chassis 1, a barrel-shaped filter screen 21 is fixedly installed at the middle position of the lower side inside the inner box 2, a through hole is opened at the middle position of the lower part of the inner box 2, and the through hole enables the pulp flowing out of the barrel-shaped filter screen 21 to enter the chassis 1. The chassis 1 is equipped with a lifting piston assembly 3.

[0017] In this embodiment, in combination with the accompanying Figure 3As shown in the figure, the lifting piston assembly 3 includes a piston body 31. The piston body 31 is hermetically and slidably arranged inside the inner box body 2. And on the upper part of the piston body 31, air cylinders 32 are arranged side by side. The output rod of the air cylinder 32 is fixedly installed with the piston body 31. The two air cylinders 32 are respectively fixedly installed on both sides of the upper part of the chassis 1. The upper part of the piston body 31 is concave, and a valve 33 is fixedly installed in the through hole opened in the middle part of the piston body 31. A ring-shaped member 34 is arranged at the lower part of the piston body 31. A connecting rod 35 is fixedly installed between the piston body 31 and the ring-shaped member 34. Connect the air cylinder 32 with an external control device. When the air cylinder 32 descends, it drives the piston body 31 to descend to pressurize the pulp, increasing the sieving efficiency. And the ring-shaped member 34 scrapes the pulp on the outer wall of the barrel-shaped filter screen 21, so as to avoid the holes of the barrel-shaped filter screen 21 from being blocked during the next sieving. When the valve 33 is opened, when there is pulp remaining on the upper part of the piston body 31, the pulp can enter the inside of the inner box body 2 through the valve 33, avoiding the pulp remaining on the upper part of the piston body 31.

[0018] In this embodiment, specifically, the inner diameter of the ring-shaped member 34 is adapted to the inner diameter of the barrel-shaped filter screen 21.

[0019] In this embodiment, specifically, the feed valve 12 is connected to the feed hole opened in the upper part of one side of the inner box body 2 through a pipeline.

[0020] In this embodiment, specifically, a box door is installed at the opening on one side of the inner box body 2.

[0021] Working principle

[0022] In the present utility model, the papermaking pulp is conveyed into the inner box body 2 through the feed valve 12. At this time, the piston body 31 is arranged at the upper part of the inner box body 2. After the papermaking pulp enters the inner box body 2, the lifting piston assembly 3 presses the papermaking pulp to increase the sieving efficiency. The sieved pulp flows to the lower part of the chassis 1 through the barrel-shaped filter screen 21. The intercepted large pieces of pulp accumulate on the barrel-shaped filter screen 21. By opening the inspection cover 13 of the chassis 1 and the box door of the inner box body 2, the intercepted large pieces of pulp can be taken out.

[0023] Using the technical solution of the present utility model, or those skilled in the art being inspired by the technical solution of the present utility model to design a similar technical solution and achieving the above technical effects shall fall within the protection scope of the present utility model.

Claims

1. A multifunctional papermaking pulp pressure screen, characterized in that: The multifunctional papermaking pulp pressure screen comprises a machine case (1), a discharge valve (11) is flange-connected at the lower opening of the machine case (1), a feed valve (12) is flange-connected at the upper feed port of the machine case (1), an inner box body (2) is arranged inside the machine case (1), connecting columns (22) are fixedly installed on both sides between the inner box body (2) and the machine case (1), a barrel-shaped filter screen (21) is fixedly installed at the middle part of the lower side of the inner box body (2), a through hole is provided at the middle part of the lower part of the inner box body (2), and the through hole enables the pulp flowing out of the barrel-shaped filter screen (21) to enter the machine case (1), and the machine case (2) is fixedly installed at the middle part of the lower side of the inner box body (2). 1) A lifting piston assembly (3) is installed, the lifting piston assembly (3) includes a piston body (31), the piston body (31) is sealingly and slidably arranged inside the inner box body (2), and cylinders (32) are arranged side by side on the upper part of the piston body (31), the output rod of the cylinder (32) is fixedly installed with the piston body (31), the two cylinders (32) are respectively fixedly installed on both sides of the upper part of the chassis (1), the upper part of the piston body (31) is concave, and a valve (33) is fixedly installed in a through hole opened in the middle part of the piston body (31), and a ring member (34) is arranged on the lower part of the piston body (31).

2. The multifunctional papermaking pulp pressure screen according to claim 1, characterized in that: A maintenance cover (13) is detachably mounted on one side of the chassis (1).

3. The multifunctional papermaking pulp pressure screen according to claim 1, characterized in that: A connecting rod (35) is fixedly installed between the piston body (31) and the annular member (34).

4. The multifunctional papermaking pulp pressure screen according to claim 1, characterized in that: The inner diameter of the annular member (34) is adapted to the inner diameter of the barrel-shaped filter screen (21).

5. The multifunctional papermaking pulp pressure screen according to claim 1, characterized in that: The feed valve (12) is connected to a feed hole pipeline opened on an upper part of one side of the inner box body (2).

6. The multifunctional papermaking pulp pressure screen according to claim 1, characterized in that: A box door is installed at one side opening of the inner box body (2).

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