Improved efficient thickener separation device

Abstract

The utility model provides an improved efficient separation thickener device which comprises a thickener, layering baffles are arranged at the middle-upper position in the thickener and divide the thickener into a middle-upper standing area and a lower stirring area, the layering baffles are symmetrically arranged in the radial direction, and the outer edges of the layering baffles are connected with the inner wall of the thickener. The hollow sleeve is arranged in the middle of the layering baffle and fixed to the layering baffle, and stability is improved. A feeding hole is formed in the top of the thickener, is an extension pipe, extends to the lower part of the layering baffle plate, and is formed in a position about 90 degrees in front of the overflow hole according to the rotating direction of a stirring paddle of the stirring device with the speed reducer. According to the utility model, the layering baffle is arranged at the middle-upper part of the thickener and divides the thickener into the middle-upper part standing area and the lower part stirring area, so that fine grains can be sufficiently settled, materials are prevented from leaking from an overflow port, the thickening efficiency of the thickener is improved, and the continuous and stable operation of the device is ensured.

Description

Technical Field

[0001] The present invention relates to an improved high-efficiency separation thickener device. This technology is a device that uses the principle of gravity sedimentation to thicken the primary slurry. The invention is suitable for systems that need to thicken the primary slurry, and is often used in the crystallization separation part of MVR, multi-effect evaporation and other systems. Background Art

[0002] A thickener is a primary slurry separation device that uses the principle of gravity sedimentation to separate solids from low-viscosity semi-finished slurry and increase the consistency of the material. Existing thickeners generally include a closed cylinder, which is divided into two parts, the upper part is a cylinder, and the lower part is a cone. The upper part of the cylinder is provided with a feed inlet, the side of the lower part of the cone is provided with a discharge port, and the side of the upper part of the cylinder is provided with an overflow port. During the thickening process of the primary slurry, the crystals settle to the lower cone, and the clearer crystal liquid flows out through the overflow port. For a thickener of this structure, when the crystal liquid inflow and outflow are unbalanced, the overflow port is prone to siphoning, carrying away the crystals, resulting in the defect that the overflow liquid carries too many crystals. At the same time, the bottom of the cone is prone to blockage, making it difficult to discharge the material, and the size of the crystals is also difficult to control, which seriously restricts the production capacity of the subsequent separator.

[0003] Conventional thickeners do not have a static zone. When the stirring paddle is used or the feed amount is too large, some fine crystals flow out of the overflow port before settling. To reduce the overflow of fine crystals, the stirring speed of the thickener can only be reduced. However, after the speed is reduced, the bottom discharge port may be blocked, or even the stirring paddle may be stuck due to too many crystal particles at the bottom. Therefore, a thickener that can overcome the existing defects is needed. Utility Model Content

[0004] In view of the above technical problems, in order to solve the problems of blockage and jamming, the utility model provides an improved high-efficiency separation thickener device, which mainly comprises: a thickener, which is provided with a feed port, an overflow port, and a discharge port on the outside, and a stirring and paddle with a reducer, a layered baffle, and a hollow casing on the inside.

[0005] Preferably, the thickener stratification baffle is disposed in the upper middle portion of the thickener, dividing the thickener into an upper middle static zone and a lower stirring zone, and the stratification baffle is arranged in several symmetrical radial directions, with the outer edge connected to the thickener cylinder.

[0006] Preferably, a hollow sleeve is installed at the stirring shaft in the middle of the thickener and fixed together with all the stratified baffles to increase stability, and an extension pipe is provided at the feed inlet, extending to the lower part of the stratified baffle.

[0007] Preferably, the thickener feed port is arranged about 90 degrees in front of the overflow port according to the rotation direction of the stirring paddle, and the thickener overflow port is arranged on the side of the thickener cylinder, above the stratification baffle.

[0008] Preferably, the thickener agitator blade is arranged at the middle part of the thickener cone, the blade length is slightly smaller than the length of the middle part, and the thickened slurry is discharged from the bottom of the thickener cone.

[0009] Beneficial effects of the utility model:

[0010] By setting a layered baffle in the middle and upper part of the thickener, the thickener is divided into a middle and upper static zone and a lower stirring zone, ensuring that fine crystals can fully settle, avoiding material leakage from the overflow port, improving the thickening efficiency of the thickener, and ensuring continuous and stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The figure is a schematic diagram of the structure of an improved high-efficiency separation thickener device.

[0012] Figure 2 The figure is a top view of an improved high-efficiency separation thickener device.

[0013] In the figure: thickener 1, feed port 2, overflow port 3, discharge port 4, stirring device with reducer 5, stratified baffle 6, hollow casing 7. DETAILED DESCRIPTION

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Example 1

[0016] An improved high-efficiency separation thickener device mainly comprises: a thickener 1, provided with a feed port 2, an overflow port 3, a discharge port 4, and a stirring device 5 with a reducer. A layered baffle 6 is provided in the middle and upper part of the thickener 1 to divide the thickener into a middle and upper static zone and a lower stirring zone. The layered baffles are arranged in several symmetrical radial directions, and the outer edges are connected to the thickener cylinder. A hollow sleeve 7 is installed at the stirring shaft in the middle of the thickener 1 and fixed together with all the layered baffles to increase stability. An extension pipe is provided at the feed port 2, extending to the lower part of the layered baffle 6. The thickener overflow port 3 is provided on the side of the thickener cylinder, above the layered baffle 6. The thickener feed port 2 is provided at about 90° in front of the overflow port 3 according to the direction of rotation of the stirring device 5 with a reducer. The stirring paddle of the stirring device 5 with a reducer in the thickener is set to the middle part of the cone of the thickener 1. The stirring paddle is conical and the length is slightly smaller than the length of the middle part. The thickened slurry is discharged from the discharge port 4 at the bottom of the cone part of the thickener.

[0017] Example 2

[0018] The working principle of an improved high-efficiency separation thickener device is as follows:

[0019] The primary slurry enters the thickener 1 from the feed port 2 below the thickener stratification baffle 6. The coarse crystal particles settle to the stirring zone under the action of gravity, and then are discharged from the bottom discharge port 4 along with the lower mother liquor. The fine crystal particles are suspended in the mother liquor under the action of stirring and buoyancy, and some of the fine crystal particles float to the static zone where the stratification baffle 6 is installed. Because of the baffle, the mother liquor does not flow there, and the crystal particles are only affected by buoyancy and gravity, and cannot float to the liquid surface and flow out from the overflow port 3. Finally, they return to the lower mother liquor and are discharged from the bottom discharge port 4 of the thickener along with the mother liquor. When the mother liquor after the crystal particles are separated floats through the static zone, a clarified liquid without crystal particles is obtained, and the clarified liquid flows out from the overflow port 3.

[0020] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An improved high-efficiency separation thickener device, characterized in that: The thickener (1) comprises a layered baffle (6) disposed at the middle upper portion of the thickener (1) to divide the thickener (1) into a middle upper static zone and a lower stirring zone. The layered baffle (6) is arranged in a plurality of symmetrical radial directions, and the outer edge thereof is connected to the inner wall of the thickener (1).

2. The improved high-efficiency separation thickener device according to claim 1 is characterized in that: A hollow sleeve (7) is provided in the middle of the layered baffle (6), and the hollow sleeve (7) and the layered baffle (6) are fixed together to increase stability.

3. The improved high-efficiency separation thickener device according to claim 1 is characterized in that: A feed inlet (2) is provided at the top of the thickener (1). The feed inlet (2) is an extension pipe extending to the lower part of the stratification baffle and is arranged at about 90 degrees in front of the overflow port according to the rotation direction of the stirring paddle.

4. The improved high-efficiency separation thickener device according to claim 1 is characterized in that: The thickener (1) is provided with an overflow port (3) on the side wall, and the overflow port (3) is arranged above the stratification baffle (6).

5. The improved high-efficiency separation thickener device according to claim 1 is characterized in that: A discharge port (4) is provided at the bottom of the thickener (1).

6. The improved high-efficiency separation thickener device according to claim 1 is characterized in that: A stirring device (5) with a reducer is arranged inside the thickener (1), and a paddle of the stirring device (5) with a reducer is arranged at the middle part of the thickener cone, and the length of the paddle is shorter than the length of the middle part.

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