A multi-stage centrifugal separation device

Abstract

The application belongs to the technical field of separation equipment, and specifically discloses a multistage centrifugal separation device, which comprises a separation tank, the middle part of which is in a cylindrical shape, the bottom part of which is in a conical shape, and the bottom part is higher at the periphery and lower in the middle. A first outlet is formed in the lowermost end of the bottom part, and a storage tank is connected below the first outlet. A plurality of liquid inlet holes are distributed on the conical surface, and each liquid inlet hole is inclined to the same circumferential direction. A second outlet is arranged on the joint ring of the cylindrical and conical shapes, and a first discharge valve is arranged on the second outlet. The top part of the separation tank is in a conical shape, is higher in the middle and lower at the periphery, and is provided with a fourth outlet. The edge of the conical shape vertically extends downwards to the middle part of the separation tank, and is combined with the cylinder in the middle part of the separation tank to form a settling space. The bottom part of the settling space is closed, and a third outlet is formed in the bottom part, and a second discharge valve is arranged on the third outlet. The application solves the problem that the existing centrifugal separation device cannot perform grading separation according to the size of solid particles.

Description

Technical Field

[0001] This invention belongs to the field of separation equipment technology, and specifically relates to a multi-stage centrifugal separation device. Background Technology

[0002] In food production and other industrial sectors, it is often necessary to separate solids of different particle sizes from liquids for graded recovery. Traditional multi-stage separation devices typically rely on filters with different pore sizes to achieve this separation, using these filters to screen and separate solid particles from the liquid. However, this method requires frequent filter cleaning and replacement, increasing maintenance costs and time consumption.

[0003] Compared to the methods described above, centrifugal separation devices do not require the use of filters for separation. However, since centrifugal separation devices do not rely on filters, they cannot achieve multi-stage separation, meaning they cannot perform graded separation based on the size of solid particles. Summary of the Invention

[0004] This invention designs a multi-stage centrifugal separation device, aiming to solve the problem that existing centrifugal separation devices cannot perform graded separation based on the size of solid particles.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0006] A multi-stage centrifugal separator includes a separation tank. The middle part of the separation tank is cylindrical, and the bottom is conical, with the bottom being lower in the middle and higher around the edges. A first outlet is provided at the bottommost end, and a storage tank is connected below the first outlet. Multiple liquid inlets are distributed on the waist and below the waist of the conical surface, and all liquid inlets are connected to a common liquid inlet manifold. Each liquid inlet is inclined in the same circumferential direction around the center line of the conical surface, so that the liquid entering the separation tank forms a fixed rotating flow. A second outlet is provided on the connecting ring between the cylindrical and conical shapes, and a first discharge valve is provided on the second outlet. The top of the separation tank is conical, with the middle being higher and the edges lower, and a fourth outlet is provided in the middle. The edge of the conical shape extends vertically downward to the outer side of the cylinder in the middle of the separation tank, forming a new cylindrical shell. The new cylindrical shell and the cylinder in the middle of the separation tank enclose a settling space. The bottom of the settling space is closed and has a third outlet, and a second discharge valve is installed on the third outlet.

[0007] Furthermore, the axes of all conical and cylindrical structures in the separator coincide.

[0008] Furthermore, the first discharge valve is cylindrical and is slidably connected to the cylinder in the middle of the separator, and the opening and closing state of the second outlet is controlled by sliding it up and down.

[0009] Furthermore, the fourth outlet includes multiple liquid outlet holes, all of which are connected to the main liquid outlet header. Each liquid outlet hole is inclined in the same circumferential direction around the center line of the conical surface at the top of the separator, thereby causing the nearby liquid flow to rotate in the same circumferential direction, with the rotation direction being the same as that of the liquid flow below.

[0010] Furthermore, the separator is equipped with a flow guiding structure that promotes the rotation of the liquid flow.

[0011] Furthermore, the separator is equipped with a rotating component that promotes the rotation of the liquid flow.

[0012] Furthermore, at the conical bottom of the separator, from bottom to top, the cumulative number of inlet holes increases with the height, just as the horizontal cross-sectional area of ​​the cone increases with the height.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] This invention uses inclined inlet and outlet ports to form a rotating upward liquid flow. By utilizing the centrifugal force and upward force of the rotating upward liquid flow, combined with the shape changes of different areas of the separation tank, different effects are produced on solid particles of different sizes, enabling graded recovery of solid particles of different sizes. Furthermore, no filter screen is required, solving the problem that existing centrifugal separation devices cannot perform graded separation based on the size of solid particles. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the multi-stage centrifugal separation device according to an embodiment of the present invention.

[0016] In the diagram: 100 - Separation tank, 110 - First outlet, 120 - Liquid inlet, 121 - Liquid inlet header, 130 - Second outlet, 131 - First discharge valve, 140 - Fourth outlet, 141 - Liquid outlet, 142 - Main liquid outlet header, 150 - Settling space, 160 - Third outlet, 161 - Second discharge valve, 200 - Storage tank. Detailed Implementation

[0017] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0018] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms “set up”, “connected”, and “linked” should be interpreted broadly.

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0020] Reference Figure 1 This embodiment discloses a multi-stage centrifugal separation device, including a separation tank 100. The middle part of the separation tank 100 is cylindrical, and the bottom is conical, with the bottom being lower in the middle and higher around the edges. A first outlet 110 is provided at the lowest end of the bottom, and a storage tank 200 is connected below the first outlet 110. Multiple liquid inlet holes 120 are distributed on the waist and below the waist of the conical surface, and all liquid inlet holes 120 are connected to a common liquid inlet header 121. Each liquid inlet hole 120 is inclined in the same circumferential direction around the center line of the conical surface, so that the liquid entering the separation tank 100 forms a fixed rotating liquid flow. A second outlet 130 is provided on the connecting ring between the cylindrical and conical shapes, and a first discharge valve 131 is provided on the second outlet 130. The top of the separator 100 is conical, higher in the middle and lower around the edges. A fourth outlet 140 is located in the middle. The edge of the cone extends vertically downwards to the outer side of the cylinder in the middle of the separator 100, forming a new cylindrical outer shell. The new cylindrical outer shell and the cylinder in the middle of the separator 100 enclose a settling space 150. The bottom of the settling space 150 is closed and has a third outlet 160. A second discharge valve 161 is installed on the third outlet 160. The axes of all the conical and cylindrical structures of the separator 100 coincide.

[0021] The principle and usage method of this embodiment are as follows:

[0022] The liquid to be treated is fed into the separator 100 through the inlet header 121 and various inlet holes 120 using pumps and other equipment. The liquid first fills the storage tank 200, and then gradually fills the separator 100, forming a rotating upward liquid flow in the separator 100. The liquid flow rotates upward and finally exits from the third outlet 160 at the top of the separator 100. The rotating upward liquid flow in the separator 100 contains solid particles of different sizes. The larger solid particles settle to the bottom of the separator 100 and enter the storage tank 200 through the first outlet 110. The remaining solid particles rise with the liquid flow under the action of centrifugal force and upward force to the vicinity of the second outlet 130. At the conical bottom, centrifugal force can help the solid particles move upward along the conical surface. However, since the middle part of the separator 100 is cylindrical, some slightly larger solid particles cannot continue to rise and hover around the second outlet 130, while smaller solid particles can rise with the upward liquid flow until they reach the conical top of the separator 100. Because the conical top is higher in the middle and lower around the edges, some solid particles move towards the edge of the top under centrifugal force. Only the smallest solid particles almost completely follow the liquid flow and are discharged from the third outlet 160. Since the edge of the conical top extends beyond the central cylindrical area of ​​the separator 100, the rotational speed of the liquid flow in this area decreases significantly and hardly rises. Therefore, the solid particles reaching this area gradually settle and are eventually stored in the settling zone. Larger solid particles in the storage tank 200 are removed during shutdown. Second-largest solid particles are discharged from the second outlet 130 by periodically opening the first discharge valve 131. Next-largest solid particles are discharged from the third outlet 160 by periodically opening the second discharge valve 161. The smallest solid particles follow the main liquid flow and are discharged from the fourth outlet 140. The solid particle content in the liquid discharged from the fourth outlet 140 usually meets the standards, and in actual operation, the extremely small solid particles contained therein can also be filtered and recovered. Through the above process, the graded recovery of solid particles of different sizes is achieved.

[0023] Furthermore, the first discharge valve 131 is cylindrical and is slidably connected to the cylinder in the middle of the separator 100, and the opening and closing state of the second outlet 130 is controlled by sliding it up and down.

[0024] Furthermore, the fourth outlet 140 includes multiple liquid outlet holes 141, all of which are connected to a main liquid outlet header 142. Each liquid outlet hole 141 is inclined in the same circumferential direction around the center line of the conical surface at the top of the separator 100, causing the nearby liquid flow to rotate in the same circumferential direction, with the rotation direction being the same as the liquid flow below, thus facilitating the formation of a rotating liquid flow. Technicians can also add flow guiding structures or rotating components within the separator 100 as needed to further promote the formation of a rotating liquid flow.

[0025] Furthermore, at the conical bottom of the separator 100, the cumulative number of inlet holes 120 increases with the height, which is the same as the increase in the horizontal cross-sectional area of ​​the cone with the height. Therefore, the upward flow rate of liquid per unit area at different heights is the same, which makes the upward speed of liquid flow at different heights in the bottom region of the cone similar. This allows solid particles to be separated with relatively similar particle size standards regardless of which inlet they enter the separator 100.

[0026] The above description only details the preferred embodiments of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multistage centrifugal separation device comprising a separation tank (100), characterized in that, The middle part of the separation tank (100) is cylindrical, the bottom part is conical, the middle part of the bottom is low and the periphery is high; the lowermost end of the bottom part is provided with a first outlet (110), the lower side of the first outlet (110) is connected with a storage tank (200); the waist part of the conical surface and below the waist part are provided with a plurality of liquid inlet holes (120), all the liquid inlet holes (120) are commonly connected with a liquid inlet main pipe (121); each liquid inlet hole (120) is inclined to the same circumferential direction around the center line of the conical surface, so that the liquid entering the separation tank (100) forms a fixed rotating flow; a second outlet (130) is arranged on the connecting ring of the cylindrical and conical parts, the second outlet (130) is provided with a first discharge valve (131); the top part of the separation tank (100) is conical, the middle part is high and the periphery is low, the middle part is provided with a fourth outlet (140), the edge of the conical part extends vertically downward to the outside of the cylinder of the middle part of the separation tank (100), forming a new cylindrical shell, the new cylindrical shell and the cylinder of the middle part of the separation tank (100) form a closed space (150) between them, the bottom part of the closed space (150) is closed and provided with a third outlet (160), the third outlet (160) is provided with a second discharge valve (161).

2. The multi-stage centrifugal separation device of claim 1, wherein, The axes of all the conical and cylindrical structures of the separation tank (100) coincide.

3. The multi-stage centrifugal separation device of claim 1, wherein, The first discharge valve (131) is cylindrical, coaxially and slidingly connected with the cylinder of the middle part of the separation tank (100), and controls the opening and closing state of the second outlet (130) by sliding up and down.

4. The multi-stage centrifugal separation device of claim 1, wherein, The fourth outlet (140) includes a plurality of liquid outlet holes (141), all the liquid outlet holes (141) are commonly connected with a main liquid outlet main pipe (142); each liquid outlet hole (141) is inclined to the same circumferential direction around the center line of the conical surface of the top part of the separation tank (100), so that the liquid flow near the liquid outlet hole (141) rotates in the same circumferential direction as the liquid flow below.

5. The multi-stage centrifugal separation device of claim 1, wherein, A flow guide structure is arranged in the separation tank (100) to promote the rotation of the liquid flow.

6. The multi-stage centrifugal separation device of claim 1, wherein, A rotating component is arranged in the separation tank (100) to promote the rotation of the liquid flow.

7. A multi-stage centrifugal separation device according to any one of claims 1-6, characterized in that In the conical bottom part of the separation tank (100), from bottom to top, the cumulative number of the liquid inlet holes (120) follows the same height growth rate as the horizontal cross-sectional area of the conical part.

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