CN219324323U

CN219324323U - Small centrifugal separator

Info

Publication number: CN219324323U
Application number: CN202320078911.0U
Authority: CN
Inventors: 韩善性; 王蕾; 任万法
Original assignee: Henan Ruisiqi New Materials Co ltd
Current assignee: Henan Ruisiqi New Materials Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-07-11
Anticipated expiration: 2033-01-10

Abstract

The utility model discloses a small centrifugal separator, which relates to the technical field of solid-liquid separation devices and comprises a roller and a motor for driving the roller to rotate, wherein the motor is arranged in a base, a plurality of small holes are formed in the surface of the roller, an opening is formed in the top of the roller, the roller and the motor are in non-detachable connection, the radius of the bottom surface of the roller is larger than that of the top surface of the roller, a cover is arranged on the outer side of the roller, the cover and the base are in detachable connection, a liquid collecting groove is formed in the inner side of the joint of the base and the cover, and a liquid outlet is formed in the bottom of the liquid collecting groove. The utility model adopts centrifugal separation to replace suction filtration, does not need air extraction equipment, can not cause problems such as caking and the like in the separation process, is suitable for separation treatment of crystallization in pilot test experiments of products in chemical enterprises, has the advantages of moderate single treatment capacity, simple and convenient operation and the like, and can solve the problem of lower efficiency of solid-liquid separation of small batches of samples in the pilot test amplification process.

Description

Small centrifugal separator

Technical Field

The utility model relates to the technical field of solid-liquid separation devices, in particular to a small centrifugal separator.

Background

In the research and development process of chemical products and production processes thereof, crystallization extraction is a common operation, and mainly comprises the processes of concentration crystallization, suction filtration, washing, drying and the like, wherein the suction filtration is a main means for solid-liquid separation in a laboratory, has the advantages of high speed, less liquid residue and the like compared with normal pressure filtration, can reduce the repetition times of subsequent washing operation, and is beneficial to improving the purity of prepared crystals.

However, in the suction filtration operation, when the sample amount is large and the crystal particles are thin, hardening easily occurs, affecting the passage of the liquid, and it is necessary to use a glass rod to stamp it. In the small test stage, the sample amount is often only tens of grams, so that the operation is not problematic, but when pilot scale amplification is carried out on the preparation process of the product, often tens of kilograms of raw materials are required to be input at one time, the generated crystallization amount is large, and pumping filtration and separation are carried out by using laboratory instruments such as a Buchner funnel, so that the progress of pilot scale production of the product is greatly hindered.

Centrifugal separation is a solid-liquid separation mode which is industrially applied in a relatively large number, and can be used for replacing suction filtration, but the current centrifugal separation equipment is mainly designed for industrial production, and mostly adopts a continuous feeding mode, such as an ammonium sulfate centrifugal separation device disclosed by CN217017003U, which can be used for separating ammonium sulfate crystal slurry. It can be seen that the existing centrifugal separation device has the following problems when used for solid-liquid separation of small batches of samples: the occupied space is large, the height is high, and the device is difficult to place in a laboratory; the continuous feeding is adopted, a special pump capable of conveying the solid-liquid mixture is needed, the pump is needed to be irrigated before feeding, the requirement on the raw material quantity is relatively large, and the preparation work and the ending work needed by single separation operation are more.

Disclosure of Invention

The utility model aims at: the small centrifugal separator is used for separating crystals from a solution, has the advantages of moderate single treatment capacity and low residual liquid capacity, and solves the problem that the efficiency of solid-liquid separation of small batches of samples in the pilot scale amplification process is low.

The technical scheme adopted by the utility model is as follows:

the utility model provides a small-size centrifugal separator, includes the cylinder and drives cylinder pivoted motor, the motor is installed in the base, the cylinder surface is equipped with a plurality of apertures, the cylinder top is equipped with the opening, wherein:

the drum and the motor are in non-detachable connection, the radius of the bottom surface of the drum is larger than the radius of the top surface of the drum, the cover is arranged on the outer side of the drum, the cover and the base are in detachable connection, the liquid collecting tank is arranged on the inner side of the joint of the base and the cover, and the liquid outlet is arranged at the bottom of the liquid collecting tank.

Preferably, the bottom of the roller is also provided with small holes, a baffle is arranged below the roller and fixedly connected with a rotating shaft of the roller, and the edge of the baffle is positioned above the liquid collecting tank.

Preferably, an annular groove is arranged at the outer side edge of the liquid collecting groove, and the annular groove is matched with the lower edge of the cover.

Preferably, the included angle between the side surface and the bottom surface of the roller is [70 degrees, 85 degrees ].

Preferably, the upper surface of the baffle has a slope of the order of (0 °,15 ° ].

Preferably, the outer edge of the baffle is folded down to a height lower than the inner edge of the liquid collecting tank.

Preferably, the inner side of the bottom of the roller is provided with a plurality of first bulges, the first bulges are distributed in a central symmetry manner around the axis of the roller, and the surface of each first bulge is a curved surface.

Preferably, the side surface of the roller is provided with a plurality of second bulges, the second bulges are distributed in a central symmetry manner around the axis of the roller, and the surface of the second bulges is a curved surface.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

(1) The centrifugal separation mode is adopted to replace suction filtration, so that air extraction equipment such as a vacuum pump is removed, the structure of the separation equipment is simplified, crystals move at high speed in a roller in the separation process, the problem of agglomeration easily occurring in the suction filtration operation is avoided, and a motor for driving the roller to move is superior to the vacuum pump used in the suction filtration operation in price, operation stability and maintenance difficulty;

(2) In the suction filtration operation, the filter paper is often punctured by the glass rod, a filter paper liner is not needed in the roller, but stronger filter cloth is used, the problem of breakage is difficult to occur in the separation process, and after the separation is finished, the filter cloth can be directly connected with crystals to be taken out from the roller, so that crystals do not need to be scraped from the filter paper like the suction filtration operation, and the crystallization collection time is shortened;

(3) The radius of the bottom surface of the roller is larger than that of the top surface, so that the gravity center of the roller is lower than half of the height of the roller, and particularly, after materials are filled into the roller, the roller has higher stability in rotation due to lower gravity center when rotating at high speed;

(4) The first bulge and the second bulge are arranged in the roller, so that crystals can be stirred when the roller works, the crystals are looser in the centrifugal process, and liquid can pass through the crystals and leave the roller;

(5) The intermittent operation is adopted, continuous feeding is not needed, the separation time can be flexibly adjusted, the upper inlet and upper outlet modes are adopted, a receiving container is not needed to be placed, and the space is saved.

Drawings

Fig. 1 is a front view structural diagram of embodiment 1.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is an enlarged view at B in fig. 1.

Fig. 4 is a front view structural diagram of embodiment 2.

Fig. 5 is a perspective view of embodiment 2.

Fig. 6 is a front view structural diagram of embodiment 3.

Fig. 7 is a front view of another embodiment of example 3.

The marks in the figure: 100. a roller; 200. a motor; 300. a base; 400. a cover; 101. a small hole; 102. a baffle; 103. a first protrusion; 104. a second protrusion; 301. a liquid collecting tank; 302. a liquid outlet; 303. an annular groove.

Detailed Description

For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the accompanying drawings and examples, it being understood that the specific examples described herein are for the purpose of illustration only and are not intended to limit the present utility model.

Example 1

As shown in fig. 1-3, the present embodiment provides a small centrifugal separator, which is mainly used for solid-liquid separation treatment in a pilot process of chemical products, and solves the problem that a buchner funnel is not suitable for separating solid-liquid mixtures in large batches, the small centrifugal separator comprises a roller 100 and a motor 200 driving the roller 100 to rotate, the motor 200 is fixedly installed in a base 300, a plurality of small holes 101 are arranged on the surface of the roller 100, an opening is arranged at the top of the roller 100, after a filter cloth is placed in the roller 100 and raw materials to be separated are put into the roller from the opening, the motor 200 is started to drive the roller 100 to rotate, so that liquid can be thrown out of the roller 100 rapidly, crystals in the liquid are left, and the small centrifugal separator is particularly suitable for single separation of solid-liquid mixtures with weight of 1-200 kg.

In addition, the bottom of the drum 100 is also provided with a small hole 101, and meanwhile, a baffle plate 102 is arranged below the drum 100, and the baffle plate 102 is fixedly connected with the rotating shaft of the drum 100, so that the baffle plate 102 rotates along with the drum 100, the edge of the baffle plate 102 is positioned above the liquid collecting tank 301 to prevent liquid from flowing into the base 300 along the baffle plate 102, and the upper surface of the baffle plate 102 has a gradient which is selected between (0 degrees and 15 degrees) and can promote the liquid to flow to the outer side along the surface of the baffle plate 102.

The roller 100 and the motor 200 are in non-detachable connection, so that looseness of a connection part is avoided, the radius of the bottom surface of the roller 100 is larger than that of the top surface of the roller 100, most of solids obtained in the centrifuging process are accumulated at the lower part of the roller 100, the center of gravity of the roller 100 is lowered, and the stability in the centrifuging process is improved; more specifically, the side surfaces of the drum 100 form an angle of 75 ° with the bottom surface.

A cover 400 is arranged on the outer side of the drum 100 and is used for blocking liquid drops flying out of the small holes 101 and enabling the liquid drops to flow along the inner wall of the cover 400, the cover 400 and the base 300 are detachably connected, a liquid collecting tank 301 is arranged on the inner side of the joint of the base 300 and the cover 400, a liquid outlet 302 is arranged at the bottom of the liquid collecting tank 301, liquid leaving the drum 100 flows into the liquid collecting tank 301 along the inner wall of the cover 400 and leaves from the liquid outlet 302, and a pipeline can be connected to the outlet of the liquid outlet 302 so that the liquid can flow into a container for collecting the liquid.

When solid-liquid separation is carried out, filter cloth is placed in the drum 100, the edge of the filter cloth extends out of an opening and is fixed by using ropes or iron wires, then supersaturated solution subjected to concentration and crystallization is poured into the drum 100, most of the solution permeates the filter cloth and leaves the drum 100 from the small holes 101 and flows into the liquid collecting tank 301 along the baffle 102, after the motor 200 is started, the solution adsorbed by crystallization moves towards the inner wall of the drum 100 under the action of centrifugal force and leaves from the small holes 101, splashes to the inner wall of the cover 400 and flows into the liquid collecting tank 301, after centrifugation is finished, the cover 400 is taken down, and then the filter cloth and crystals on the filter cloth are taken out to finish crystal collection without using a tool to stretch into the drum 100 to scrape the crystals.

Since the filter cloth with different meshes can be selected according to the grain sizes of the crystals, even double-layer and multi-layer filter cloth can be placed, the small centrifugal separator of the embodiment can adapt to the separation of the crystals with different grain sizes, and the problem that the crystals leave the roller 100 from the small holes 101 or the crystals block the small holes 101 can be avoided.

Example 2

This embodiment is modified on the basis of embodiment 1, specifically, as shown in fig. 4 and 5, and differs in that:

the outer edge of the sump 301 is provided with an annular groove 303, and the annular groove 303 is matched with the lower edge of the cover 400, so that the cover 400 can be just placed in the annular groove 303, and the cover 400 is prevented from horizontally moving.

The outer edge of the baffle 102 is folded down to a level lower than the inner edge of the sump 301 to prevent liquid from flowing to the lower surface of the baffle 102, and when the liquid flows down along the edge of the baffle 102, it does not enter the base 300 from the gap between the baffle 102 and the inner edge of the sump 301.

Example 3

The embodiment is improved on the basis of embodiment 2, specifically, as shown in fig. 6, the difference is that a plurality of first protrusions 103 are arranged on the inner side of the bottom of the roller 100, the first protrusions 103 are distributed in a central symmetry manner around the axis of the roller 100, the surfaces of the first protrusions 103 are curved surfaces, when the roller 100 rotates, the first protrusions 103 can play a role similar to a stirring paddle, so that solids in the roller 100 are scattered in the rotating process of the roller 100, liquid can conveniently penetrate through the solids to reach the inner wall of the roller 100, the solid-liquid separation efficiency is improved, and the residual liquid amount in the obtained solids is lower under the same separation time and rotation speed.

On this basis, a plurality of second protrusions 104 may be further disposed on the side of the drum 100, as shown in fig. 7, the second protrusions 104 are symmetrically distributed around the axis of the drum 100, and the surface of the second protrusions is a curved surface similar to the first protrusions 103, so that the stirring effect can be achieved.

In some embodiments, the drum 100 and the motor 200 may be connected by a gear set, and when the capacity of the drum 100 is small, for example, 1 liter to 10 liters, a transmission ratio smaller than 1 may be used to make the rotation speed of the drum 100 higher than the rotation speed of the motor 200, so as to provide a stronger centrifugal force; when the capacity of the drum 100 is large, for example, 50 to 200 liters, a transmission ratio greater than 1 may be used to make the rotation speed of the drum 100 lower than that of the motor 200, so as to reduce the torque requirement on the motor 200, and allow a motor with high rotation speed and low torque to be used as the motor 200.

In addition to the above embodiments, the side-to-bottom angle of the drum 100 may be arbitrarily selected between 70 °,85 °.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a small-size centrifugal separator, includes cylinder (100) and drives cylinder (100) pivoted motor (200), motor (200) are installed in base (300), cylinder (100) surface is equipped with a plurality of apertures (101), cylinder (100) top is equipped with the opening, its characterized in that:

the drum is characterized in that the drum (100) and the motor (200) are in non-detachable connection, the radius of the bottom surface of the drum (100) is larger than the radius of the top surface of the drum, a cover (400) is arranged on the outer side of the drum (100), the cover (400) and the base (300) are in detachable connection, a liquid collecting groove (301) is formed in the inner side of the joint of the base (300) and the cover (400), and a liquid outlet (302) is formed in the bottom of the liquid collecting groove (301).

2. A small centrifugal separator according to claim 1, wherein the bottom of the drum (100) is also provided with small holes (101), a baffle (102) is arranged below the drum (100), the baffle (102) is fixedly connected with the rotating shaft of the drum (100), and the edge of the baffle (102) is positioned above the liquid collecting tank (301).

3. A small centrifugal separator according to claim 1, characterized in that the outside edge of the sump (301) is provided with an annular groove (303), which annular groove (303) is adapted to the lower edge of the cover (400).

4. A small centrifugal separator according to claim 1, characterized in that the side surfaces of the drum (100) are inclined at an angle of [70 °,85 ° ] to the bottom surface.

5. A small centrifugal separator according to claim 2, characterized in that the upper surface of the baffle (102) has a slope of the order of (0 °,15 ° ].

6. A small centrifugal separator according to claim 2 or 5, wherein the outer edge of the baffle (102) is turned down to a level below the inner edge of the sump (301).

7. A small centrifugal separator according to any one of claims 1-5, wherein the inner side of the bottom of the drum (100) is provided with a first protrusion (103), the first protrusions (103) are provided in plurality and are distributed in a central symmetry around the axis of the drum (100), and the surface of the first protrusion (103) is a curved surface.

8. A small centrifugal separator according to any one of claims 1-5, wherein the side of the drum (100) is provided with second protrusions (104), the second protrusions (104) are provided in plurality and are distributed in a central symmetry around the axis of the drum (100), and the surface of the second protrusions (104) is a curved surface.