Spiral solid-liquid separator

Abstract

The utility model provides a spiral solid-liquid separator which comprises a tube shell extending in the vertical direction; the spiral packing auger is arranged in the tube shell, the spiral packing auger can be driven by a motor to rotate, and the motor is arranged at the top of the tube shell; the solid material outlet is formed in the side surface of the top of the tube shell; the feeding pipe is arranged on the side face of the bottom of the pipe shell, the feeding pipe is connected with the pipe shell in a downward inclined insertion mode, and a pipe opening of the feeding pipe is a slurry inlet; and the filter disc forms the bottom of the tube shell. According to the spiral solid-liquid separator provided by the utility model, the tube shell vertically extends, the filter disc is arranged at the bottom of the tube shell, slurry enters the tube shell in an obliquely downward manner, and liquid has a tendency to flow out of the filter disc downwards under the action of gravity, so that liquid removal is facilitated, and a better liquid removal effect can be realized under the dual actions of the gravity and the pressure of the spiral auger.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-liquid separation, in particular to a spiral solid-liquid separator. Background Art

[0002] In the field of production and life, solid-liquid separation problems are often encountered, such as the treatment of suspensions and turbid liquids. For example, in the field of animal husbandry, feces dehydration is required, in the field of oil and gas extraction, sludge separation is required, and in the field of winemaking, lees dehydration is required. These fields all involve solid-liquid separation problems. The traditional solid-liquid separation method is similar to the water treatment process of a water plant, including sedimentation + filtration, but this process is often time-consuming. As people now begin to pursue efficiency, many types of solid-liquid separation equipment have been developed, and the spiral solid-liquid separator is a more common one.

[0003] Figure 1 The figure shows a schematic diagram of the structure of a common spiral solid-liquid separator. The spiral solid-liquid separator 100 includes a tube shell 1 and a spiral auger 2. The spiral auger 2 includes a rotating shaft 21 and a spiral blade 22 extending around the rotating shaft 21. A slurry inlet 11 is provided at the upper part of one end of the tube shell 1, a solid material outlet 12 is provided at the other end of the tube shell 1, and one or more liquid outlets 13 are provided at the lower part of the tube shell 1. When in use, the slurry to be separated into solid and liquid enters the tube shell 1 from the slurry inlet 11, the spiral auger 2 is driven to rotate, the slurry inside the tube shell 1 is squeezed, the solid material is separated from the liquid under pressure, the solid material is squeezed out through the solid material outlet 12, and the liquid flows out through the liquid outlet 13.

[0004] However, this type of spiral solid-liquid separator also has certain problems. Figure 2 The middle tube shell 1 extends in the horizontal direction, and the liquid outlet 13 is located at the bottom of the tube shell 1. Therefore, for the liquid, the liquid must flow to the lower liquid outlet before it can flow out. In the process of the liquid flowing to the liquid outlet, the liquid will be absorbed by other solids, causing the liquid content of the slurry located at the lower part of the tube shell to be greater than the liquid content of the slurry located at the upper part of the tube shell, and there is a problem of incomplete liquid removal. Moreover, since the liquid content of the slurry at the lower part of the tube shell is large, and the liquid outlet 13 is located at the lower part of the tube shell, after the liquid in the slurry at the lower part of the tube shell flows out through the liquid outlet 13, it is easy to have large gaps or pores in the material flow, affecting the continuity of the material flow, destroying the continuity of the pressure, and affecting the liquid removal effect.

[0005] To address this problem, there is also a structure in which the tube shell 1 itself is entirely composed of a filter screen, so that the liquid squeezed out at any position in the tube shell 1 can flow to the outside through the filter screen. However, due to the effect of gravity, regardless of whether the liquid is inside or outside the tube shell, this structure also has the problem that the liquid at the upper part of the tube shell is reabsorbed and combined with the solid during the downward flow, which also affects the liquid removal effect.

[0006] The utility model provides a spiral solid-liquid separator, which can improve the liquid removal effect. Utility Model Content

[0007] The utility model provides a spiral solid-liquid separator, which can improve the liquid removal effect.

[0008] The utility model proposes a spiral solid-liquid separator, comprising: a tube shell, which extends in a vertical direction; a spiral auger, which is arranged inside the tube shell, and the spiral auger can rotate under the drive of a motor, and the motor is arranged at the top of the tube shell; a solid material outlet, which is arranged on the side of the top of the tube shell; a feed pipe, which is arranged on the side of the bottom of the tube shell, the feed pipe is connected to the tube shell in a downward oblique insertion manner, and the pipe mouth of the feed pipe is a slurry inlet; and a filter disc, which constitutes the bottom of the tube shell, and the filter disc is provided with micropores to allow liquid to pass through but not solid to pass through.

[0009] Furthermore, one or more liquid outlets are arranged on the side of the tube shell, and a filter screen is arranged on the liquid outlet.

[0010] Furthermore, the liquid outlet extends in the tube wall of the tube shell in an oblique downward manner.

[0011] Furthermore, the filter disc is connected to the tube shell by means of a nut connection or a flange connection.

[0012] The spiral solid-liquid separator provided by the utility model has a vertically extending tube shell, a filter disc being provided at the bottom of the tube shell, slurry enters the tube shell in an oblique downward manner, and under the action of gravity, the liquid itself tends to flow downward from the filter disc, which is beneficial to liquid removal, and under the dual action of gravity and the pressure of the spiral auger, a better liquid removal effect can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Shown is a schematic structural diagram of an existing spiral solid-liquid separator.

[0014] Figure 2 Shown is a schematic structural diagram of a spiral solid-liquid separator according to an embodiment of the utility model.

[0015] Figure 3 Shown Figure 2 A schematic diagram of the partial structure of the tube shell of the embodiment shown.

[0016] Reference numerals:

[0017] 100: an existing spiral solid-liquid separator; 200: a spiral solid-liquid separator according to an embodiment of the utility model;

[0018] 1: tube shell; 11: slurry inlet; 111: feed pipe; 12: solid material outlet; 13: liquid outlet; 131: filter screen;

[0019] 2: spiral auger; 21: rotating shaft; 22: spiral blade;

[0020] 3: Motor; 4: Filter plate. DETAILED DESCRIPTION

[0021] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0022] Figure 2 Shown is a schematic structural diagram of a spiral solid-liquid separator according to an embodiment of the utility model. Figure 3 Shown Figure 2 A schematic diagram of the partial structure of the tube shell of the embodiment shown.

[0023] like Figure 2 As shown, an embodiment of the utility model proposes a spiral solid-liquid separator 200, comprising: a tube shell 1, which extends in a vertical direction; a spiral auger 2, which is arranged inside the tube shell 1, and the spiral auger 2 can rotate under the drive of a motor 3, and the motor 3 is arranged at the top of the tube shell 1; a solid material outlet 12, which is arranged on the side of the top of the tube shell 1; a feed pipe 111, which is arranged on the side of the bottom of the tube shell 1, and the feed pipe 111 is connected to the tube shell 1 in a downward oblique insertion manner, and the pipe mouth of the feed pipe 111 is a slurry inlet; and a filter plate 4, which constitutes the bottom of the tube shell 1, and the filter plate 4 is provided with micropores to allow liquid to pass through but not solid to pass through.

[0024] When the slurry enters the tube shell 1 through the feed pipe 111, since the bottom of the tube shell 1 is a filter disc, the liquid itself tends to flow downward and out through the filter disc under the action of gravity, which is conducive to liquid removal. Since the tube shell 1 extends in the vertical direction, the liquid squeezed out at each height of the tube shell 1 generally flows downward along the inner wall surface of the tube shell 1, because this path is the path with the lowest resistance. Therefore, the solid separated from the liquid will generally not be wetted by the liquid again. The higher the solid content is, the higher the liquid content is, which can ensure that the solid discharged at the top can be well dehydrated.

[0025] Further, such as Figure 3 As shown, one or more liquid outlets 13 may be provided on the side of the tube shell 1, and a filter screen 131 may be provided on the liquid outlet 13. The liquid outlet 13 extends in an oblique downward manner in the tube wall of the tube shell 1 to facilitate the squeezed liquid to flow out as quickly as possible. Especially for the lower part of the tube shell with a higher liquid content, more liquid outlets may be provided to facilitate the liquid to flow out as quickly as possible.

[0026] Furthermore, the filter disc 4 can be connected to the tube shell 1 by a nut connection or a flange connection. In this way, the filter disc 4 can be easily disassembled and replaced. In addition, if it is necessary to clean the inside of the tube shell 1, the filter disc 4 is removed, and a purge air or a cleaning liquid (such as water) is introduced from the solid material outlet 12. In combination with the operation of the spiral auger 2, the inside of the tube shell 1 can be cleaned without large-scale disassembly, which is very convenient.

[0027] The spiral solid-liquid separator provided by the utility model has a vertically extending tube shell, a filter disc being provided at the bottom of the tube shell, slurry enters the tube shell in an oblique downward manner, and under the action of gravity, the liquid itself tends to flow downward from the filter disc, which is beneficial to liquid removal, and under the dual action of gravity and the pressure of the spiral auger, a better liquid removal effect can be achieved.

[0028] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A spiral solid-liquid separator, characterized in that: include: A tube shell extending in a vertical direction; A spiral auger, the spiral auger is arranged inside the tube shell, the spiral auger can be rotated by the motor, and the motor is arranged on the top of the tube shell; A solid material outlet, the solid material outlet being arranged on a side surface of the top of the tube shell; A feed pipe, the feed pipe is arranged on the side of the bottom of the tube shell, the feed pipe is connected to the tube shell in a downward oblique insertion manner, and the pipe mouth of the feed pipe is a slurry inlet; as well as A filter disc is provided, which forms the bottom of the tube shell and is provided with micropores to allow liquid to pass through but not allow solid to pass through.

2. The spiral solid-liquid separator according to claim 1, characterized in that: One or more liquid outlets are arranged on the side of the tube shell, and a filter screen is arranged on the liquid outlet.

3. The spiral solid-liquid separator according to claim 2, characterized in that: The liquid outlet extends in a downwardly oblique manner inside the tube wall of the tube shell.

4. The spiral solid-liquid separator according to claim 1, characterized in that: The filter disc is connected to the tube shell by means of a nut connection or a flange connection.

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