CN219209291U

CN219209291U - Linkage device for preventing harrow of thickener from pressing harrow

Info

Publication number: CN219209291U
Application number: CN202320113386.1U
Authority: CN
Inventors: 魏建航; 王静; 闫建党; 王鹏斐
Original assignee: Shaanxi Shenwei Coal Pipeline Transportation Co ltd
Current assignee: Shaanxi Shenwei Coal Pipeline Transportation Co ltd
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2023-06-20
Anticipated expiration: 2033-01-17

Abstract

The utility model discloses a linkage device for preventing a rake of a thickener from being pressed, which comprises a screen mesh arranged at a feed inlet at the upper end of a thickener body, wherein a slurry pump unit is communicated with a drain outlet at the bottom of the thickener body, an anti-blocking alarm unit is also arranged at the drain outlet at the bottom of the thickener body, and a water inlet pipeline is communicated with the side wall of the thickener body. The utility model solves the problem of harrow pressing phenomenon caused by sludge accumulation of the existing thickener harrow.

Description

Linkage device for preventing harrow of thickener from pressing harrow

Technical Field

The utility model belongs to the technical field of reconstruction of a thickener, and relates to a linkage device for preventing a thickener from harrowing, pressing and harrowing.

Background

In the coal treatment process, a dewatering workshop, a concentration workshop and a concentration workshop are arranged, in the normal operation process of the concentration workshop, wastewater enters the tank through the water inlet pipe, suspended matters settle under the action of gravity and enter the bottom of the tank along the slope of the bottom of the tank, and supernatant overflows along the overflow weir of the concentration tank. The bottom of the tank adopts a thickener rake frame to collect sludge, and the sludge is discharged through a slurry pump in the later period. However, the diameter of the harrow frame of the thickener is larger, the rotating speed is not too high, and the harrow frame of the thickener is broken due to unstable water inlet speed of the thickener and excessive accumulation of mud, and the harrow frame of the thickener runs uninterruptedly and generates huge consumption. If the fineness of the ground ore is coarser for a long time, the particles of the material in the ore pulp entering the tailing thickener are coarser, the torque of the thickener is higher, and the harrow is likely to be pressed. The slurry pump fails, and the slurry cannot be pumped away in time, so that the slurry is piled up more and the torque of the harrow becomes larger, and the harrow is pressed.

Disclosure of Invention

The utility model aims to provide a linkage device for preventing a rake from being pressed by a thickener rake, which solves the problem of rake pressing caused by sludge accumulation of the existing thickener rake.

The technical scheme includes that the linkage device for preventing the rake of the thickener from being pressed comprises a screen mesh arranged at a feed inlet at the upper end of a thickener body, a slurry pump unit is communicated with a drain outlet at the bottom of the thickener body, an anti-blocking alarm unit is further arranged at the drain outlet at the bottom of the thickener body, and a water inlet pipeline is communicated with the side wall of the thickener body.

The utility model is also characterized in that:

the slurry pump unit comprises a slurry pump A and a slurry pump B, and the slurry pump A and the slurry pump B are respectively positioned at two opposite sides of the bottom of the concentration tank body.

The anti-blocking alarm unit comprises an anti-blocking alarm A and an anti-blocking alarm B, wherein the anti-blocking alarm A and the anti-blocking alarm B are respectively positioned at drain outlets on two opposite sides of the bottom of the concentration tank body.

The water inlet pipeline comprises two groups, the two groups of water inlet pipelines are respectively communicated with the water inlet A and the water inlet B, and the water inlet A and the water inlet B are respectively positioned on the two opposite side walls of the concentration tank body.

The water inlet A and the water inlet B are positioned at the center of the side wall of the concentration tank body.

The utility model has the advantages that the feeding can be started and stopped according to the blocking signal of the inlet of the slurry pump, the rake frame of the thickener runs, the water outlet is diluted, when the low-flow pump is blocked, the water outlet immediately discharges water, the feeding is stopped, the dilution is started, and a user can perform manual operation according to the warning to prevent the excessive accumulation of the mud.

Drawings

Fig. 1 is a schematic structural view of a linkage device for preventing a rake of a thickener from pressing rake.

In the figure, a PLC controller, a water inlet A, a water inlet B, a slurry pump A, a slurry pump B, a screen, a feeding hole, an anti-blocking alarm A, an anti-blocking alarm B, a concentration tank body, a concentration tank rake and a motor are respectively arranged in sequence, wherein the PLC controller, the water inlet A, the water inlet B, the slurry pump A, the slurry pump B, the screen, the feeding hole, the anti-blocking alarm A, the anti-blocking alarm B, the anti-blocking alarm 10, the concentration tank body, the concentration tank rake and the motor are respectively arranged in sequence, and the concentration tank rake and the motor are respectively arranged in sequence.

Detailed Description

The utility model will be described in detail below with reference to the drawings and the detailed description.

According to the linkage device for preventing the rake of the thickener rake, as shown in fig. 1, a thickener rake frame 11 is arranged in a thickener tank body 10, the thickener rake frame 11 extends out of the top of the thickener tank body 10 through a central shaft and is coaxially connected with a motor 12, drain outlets are respectively arranged on two opposite sides of the bottom of the thickener tank body 10, a slurry pump A4 and a slurry pump B5 are respectively connected with the two drain outlets, an anti-blocking alarm A8 and an anti-blocking alarm B9 are respectively arranged at the two drain outlets, a feed inlet 7 is arranged at the upper end of the thickener tank body 10, a screen 6 is arranged at the feed inlet 7, and sundries such as larger particles, plastic bags and woven bags can be prevented from entering the thickener tank body 10 through the screen 6. The opposite sides in the middle of the side wall of the concentration tank body 10 are respectively provided with a water inlet A2 and a water inlet B3. Anti-blocking alarm A8 and anti-blocking alarm B9 are DCS alarm systems.

The utility model relates to a linkage device for preventing a rake of a thickener from pressing, which comprises the following steps: when ore pulp materials enter the concentrating tank body 10 through the feeding port 7, firstly, the ore pulp materials are filtered through the screen 6, impurities doped in the ore pulp materials are filtered, the motor 12 rotates to drive the concentrating tank rake 11 to rotate, when sludge at the bottom of the concentrating tank body 10 is continuously accumulated to cause blockage of a sewage outlet, the anti-blocking alarm A8 and the anti-blocking alarm B9 can give an alarm when both the pulp pump A4 and the pulp pump B5 cannot work normally, an alarm signal is transmitted to the PLC controller 1, at the moment, the feeding port 7 stops feeding, water enters the concentrating tank body 10 through the water inlet A2 and the water inlet B3 at the same time, the ore pulp materials in the concentrating tank body 10 are diluted, at the moment, the motor 12 drives the concentrating tank rake 11 to dilute and stir the ore pulp materials, and at the moment, because the sludge in the ore pulp materials is diluted, the sewage outlet at the bottom of the concentrating tank body 10 can normally carry out sewage discharge, the pulp pump A4 and the pulp pump B5 work normally, and the pressing rake is avoided.

Claims

1. Linkage device for preventing rake pressing of thickener rake, characterized in that: including setting up screen cloth (6) in concentrated pond body (10) upper end feed inlet (7) department, the bottom drain department intercommunication of concentrated pond body (10) has sediment stuff pump unit, and the bottom drain department of concentrated pond body (10) still is equipped with prevents blockking up alarm unit, and the lateral wall intercommunication of concentrated pond body (10) has the water inlet pipeline.

2. The linkage for preventing rake pressing of a thickener according to claim 1, wherein: the slurry pump unit comprises a slurry pump A (4) and a slurry pump B (5), and the slurry pump A (4) and the slurry pump B (5) are respectively positioned at two opposite sides of the bottom of the concentration tank body (10).

3. The linkage for preventing rake pressing of a thickener according to claim 1, wherein: anti-blocking alarm unit is including preventing blockking up alarm A (8) and anti-blocking alarm B (9), and anti-blocking alarm A (8) and anti-blocking alarm B (9) are located the drain department of concentrate pond body (10) bottom opposite both sides respectively.

4. The linkage for preventing rake pressing of a thickener according to claim 1, wherein: the water inlet pipeline comprises two groups, the two groups of water inlet pipelines are respectively communicated with the water inlet A (2) and the water inlet B (3), and the water inlet A (2) and the water inlet B (3) are respectively positioned on two opposite side walls of the concentration tank body (10).

5. The linkage for preventing rake pressing of a thickener according to claim 4, wherein: the water inlet A (2) and the water inlet B (3) are positioned at the center of the side wall of the concentration tank body (10).