CN218784893U

CN218784893U - Centrifuge structure with large length-diameter ratio

Info

Publication number: CN218784893U
Application number: CN202222752694.7U
Authority: CN
Inventors: 陈嵘; 谭芳媛
Original assignee: Jiangsu Hengliang Centrifuge Manufacturing Co ltd
Current assignee: Jiangsu Hengliang Centrifuge Manufacturing Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-04-04
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a centrifuge structure of big length-diameter ratio, including setting up rotary drum and the spiral pusher on the frame, main motor and vice motor and connection are installed on the frame right side the differential mechanism of main motor and vice motor, the cavity has all been seted up with spiral pusher inboard to the rotary drum, spiral pusher installs in the rotary drum cavity, and rotary drum and spiral pusher coaxial arrangement rotate and the syntropy, differential mechanism's one end is kept away from to the rotary drum is provided with the feed inlet, the inside cavity of spiral pusher is and switch on through discharge gate and the inside cavity of rotary drum to the feed inlet connection. The utility model discloses a big length and diameter ratio L/D =4.5, high rotational speed, little differential system, big length and diameter ratio increase clarification and the dehydration dwell time of material in the built-in, and high rotational speed has very big centrifugal force field, and little differential reduces the spiral and stirs the material, increases the dehydration dwell time to improve the material dehydration and the separation effect of clarification.

Description

Centrifuge structure with large length-diameter ratio

Technical Field

The utility model relates to a spiral shell centrifuge technical field crouches especially relates to a centrifuge structure of big length-diameter ratio.

Background

The horizontal spiral discharge settling centrifuge is used for treating heterogeneous phase solid-liquid separation, can separate liquid-solid and liquid-solid suspensions, and is suitable for various suspensions with solid phase particle equivalent diameter not less than 2um, weight concentration ratio not more than 10% or volume concentration ratio not more than 70%, and liquid-solid specific gravity difference of 0.05g/cm < 3 > to carry out liquid-solid separation or particle classification by adopting the centrifuge.

However, the existing horizontal screw centrifuge is fixed by a drum separation point with a fixed length-diameter ratio, the length-diameter ratio is usually less than 4.2, and the dewatering retention time is too short, so that the clarification separation effect of materials is poor.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problems to be solved, a centrifuge structure with a large length/diameter ratio is provided.

In order to realize the above-mentioned purpose, the utility model discloses a centrifuge structure of big length-diameter ratio, including setting up rotary drum and the spiral pusher on the frame, main motor and vice motor and connection are installed on the frame right side the differential mechanism of main motor and vice motor, the cavity has all been seted up to rotary drum and spiral pusher inboard, the spiral pusher is installed in the rotary drum cavity, and rotary drum and spiral pusher coaxial arrangement and syntropy rotate, differential mechanism's one end is kept away from to the rotary drum is provided with the feed inlet, the inside cavity of spiral pusher is and switches on through discharge gate and the inside cavity of rotary drum to the feed inlet.

Furthermore, the rotary drum comprises a first column section, a second column section and a conical section, wherein the side with the larger sectional area of the conical section is connected with the first column section, and the side with the smaller sectional area of the conical section is connected with the second column section.

Furthermore, at least four groups of liquid discharging ports are formed in the first column section in the axial direction close to the differential mechanism, liquid discharging channels are connected below the liquid discharging ports, at least four groups of slag discharging ports are formed in the circumferential direction of the second column section, and slag discharging channels are connected below the slag discharging ports.

Furthermore, the outer wall of the spiral pusher is provided with a spiral blade, and the pitch of the spiral blade on the column section of the spiral pusher is greater than that on the cone section.

Furthermore, a temperature sensor and a vibration sensor are arranged on a bearing between the differential and the rotary drum.

Furthermore, the limit rotating speed of the rotary drum is not less than 3600rpm, and the differential rotating speed of the differential mechanism is 5-25rpm.

Still further, the drum has an aspect ratio greater than 4.5, the aspect ratio being the ratio of the axial length of the drum to the maximum internal diameter of the drum.

Further, the maximum inner diameter of the drum is 760mm, and the axial length of the drum is 3420mm.

Compared with the prior art, the utility model discloses the beneficial effect who produces: the utility model discloses a centrifuge structure of big length-diameter ratio adopts big length-diameter ratio L/D =4.5, high rotational speed, little differential system, and big length-diameter ratio increases clarification and the dehydration dwell time of material in the built-in, and high rotational speed has very big centrifugal force field, and little differential reduces the spiral and stirs the material, increases the dehydration dwell time to improve the material dehydration and the separation effect of clarification.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

In the figure: 1 is a machine base; 2 is a rotary drum; 201 is a first column section; 202 is a conical section; 203 is a second section; 204 is a slag discharge port; 205 is a liquid outlet; 3 is a main motor; 4 is an auxiliary motor; 5 is a spiral pusher; 501 is a helical blade; 502 is a discharge hole; 6 is a differential mechanism; 7 is a feed inlet; 8 is a slag discharge channel; and 9 is a liquid drainage channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model discloses an embodiment, as shown in fig. 1 and fig. 2, including setting up rotary drum 2 and the spiral pusher 5 on frame 1, main motor 3 and vice motor 4 and connection are installed on frame 1 right side the differential mechanism 6 of main motor 3 and vice motor 4, the cavity has all been seted up to rotary drum 2 and spiral pusher 5 inboard, spiral pusher 5 installs in rotary drum 2 cavity, rotary drum 2 and spiral pusher 5 coaxial arrangement and syntropy rotate, the one end that differential mechanism was kept away from to rotary drum 2 is provided with feed inlet 7, feed inlet 7 is connected the inside cavity of spiral pusher 5 and is switched on through discharge gate 502 with the inside cavity of rotary drum 2, turbid liquid gets into inside spiral pusher 5 from feed inlet 7 to separate in getting into the inside cavity of rotary drum from discharge gate 502.

The rotating drum 2 comprises a first column section 201, a second column section 203 and a conical section 202, wherein the side with the larger cross section area of the conical section 202 is connected with the first column section 201, and the side with the smaller cross section area of the conical section 202 is connected with the second column section 203.

At least four groups of liquid discharge ports 205 are formed in the first column section 201 in the axial direction close to the differential 6, a liquid discharge channel 9 is connected below the liquid discharge ports 205, at least four groups of slag discharge ports 204 are formed in the circumferential direction of the second column section 203, a slag discharge channel 8 is connected below the slag discharge ports 204, the dehydrated solid phase is discharged out of the rotary drum 2 from the slag discharge ports 204, and the liquid phase is discharged out of the liquid discharge ports 205, so that solid-liquid separation is realized.

Be provided with helical blade 501 on 5 outer walls of spiral stoker, the pitch that helical blade 501 is located 5 sections of columns of spiral stoker is greater than the pitch that is located the conic section, and the solid phase sediment of isolating hugs closely 2 inner walls of rotary drum and carries out the extrusion dehydration here, and the helical blade 501 structure of little pitch promotes dewatering effect, reduces the water content of sediment.

A temperature sensor and a vibration sensor are mounted on a bearing between the differential mechanism 6 and the rotary drum 2, the temperature sensor adopts a thermocouple to detect the real-time temperature at the bearing, and the vibration sensor adopts a piezoelectric acceleration sensor to detect the axial runout of the rotary drum in the rotating process, so that the safety monitoring performance and the working monitoring performance of the centrifugal machine are improved.

The limit rotating speed of the rotary drum 2 is not less than 3600rpm, the differential rotating speed of the differential mechanism 6 is 5-25rpm, a large centrifugal force field is provided at a high rotating speed, the small differential speed reduces the stirring of the screw to the material, and the dewatering retention time is prolonged.

The drum 2 has an aspect ratio of more than 4.5, the aspect ratio being the ratio of the axial length of said drum 2 to the maximum inner diameter of said drum 2, as a preferred embodiment of the present application the maximum inner diameter of the drum 2 is 760mm, the axial length of the drum 2 is 3420mm and the aspect ratio of the drum 2 is 4.5.

The working principle of the embodiment is as follows: in the horizontal screw centrifuge, a main motor and an auxiliary motor drive a differential mechanism 6 through a belt to enable a centrifuge drum 2 and a spiral pusher 5 to rotate around the axes of the spiral pusher 5 in the same direction at a certain speed difference, turbid liquid enters the cavity of the spiral pusher 5 through a feeding hole 7 and enters the cavity of the drum 2 through a discharging hole 502 on the cavity of the spiral pusher 5 under the centrifugal action, and the turbid liquid entering the drum 2 causes layering of solid particles and liquid with different densities under the action of the centrifugal action of the drum 2 rotating at a high speed, and forms a solid-liquid annular layer on the inner wall of the drum 2. The solid particles with higher density are settled to be tightly attached to the inner wall of the rotary drum 2 to form a sediment layer, the solid on the sediment layer is pushed to the conical section 202 of the rotary drum 2 under the action of the spiral blade 501 of the rotary spiral pusher 5 to be extruded and further dehydrated, the dehydrated solid phase is discharged out of the rotary drum 2 from the sediment outlet 204, and the liquid phase is discharged from the liquid outlet 205 through the overflow port after passing through the filter screen.

The points to be explained are as follows: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed; second, in this document, relational terms such as first and second, and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The above examples are merely illustrations of the present invention, and do not constitute limitations to the scope of the present invention, and all designs the same as or similar to the present invention belong to the scope of the present invention.

Claims

1. The utility model provides a centrifuge structure of big length-diameter ratio, is including setting up rotary drum (2) and spiral pusher (5) on frame (1), its characterized in that, main motor (3) and vice motor (4) and connection are installed on frame (1) right side differential mechanism (6) of main motor (3) and vice motor (4), the cavity has all been seted up to rotary drum (2) and spiral pusher (5) inboard, spiral pusher (5) are installed in rotary drum (2) cavity, and rotary drum (2) and spiral pusher (5) coaxial arrangement and syntropy rotate, the one end that differential mechanism was kept away from in rotary drum (2) is provided with feed inlet (7), feed inlet (7) are connected spiral pusher (5) inner cavity and are switched on with rotary drum (2) inner cavity through discharge gate (502).

2. A centrifuge structure with a large length-diameter ratio according to claim 1, wherein the rotary drum (2) comprises a first column section (201), a second column section (203) and a cone section (202), wherein the side with a larger cross section of the cone section (202) is connected with the first column section (201), and the side with a smaller cross section of the cone section (202) is connected with the second column section (203).

3. The centrifuge structure with the large length-diameter ratio according to claim 2, characterized in that at least four groups of liquid discharge ports (205) are formed in the first column section (201) close to the axial direction of the differential (6), a liquid discharge channel (9) is connected below the liquid discharge ports (205), at least four groups of slag discharge ports (204) are formed in the second column section (203) in the circumferential direction, and a slag discharge channel (8) is connected below the slag discharge ports (204).

4. A centrifuge structure with large length-diameter ratio according to claim 1, characterized in that the spiral blade (501) is arranged on the outer wall of the spiral pusher (5), and the pitch of the spiral blade (501) on the column section of the spiral pusher (5) is larger than that on the cone section.

5. A centrifuge construction with a large length to diameter ratio according to claim 1, characterised in that the bearings between the differential (6) and the bowl (2) are fitted with temperature and vibration sensors.

6. A centrifuge arrangement with a large aspect ratio according to claim 1, characterized in that the rotational speed limit of the rotor drum (2) is not less than 3600rpm and the differential (6) has a differential rotational speed of 5-25rpm.

7. A centrifuge construction with a large length to diameter ratio according to claim 1, characterised in that the length to diameter ratio of the bowl (2) to the largest inner diameter of the bowl (2) is greater than 4.5.

8. A centrifuge structure having a large aspect ratio according to claim 7, wherein the maximum inner diameter of the bowl (2) is 760mm and the axial length of the bowl (2) is 3420mm.