CN214763801U

CN214763801U - Internal filtering type pressurizing rotary drum filter

Info

Publication number: CN214763801U
Application number: CN202120441172.8U
Authority: CN
Inventors: 李密成
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-11-19
Anticipated expiration: 2031-03-01

Abstract

The utility model provides an internal filtering type pressurizing rotary drum filter relating to the field of solid-liquid separation equipment, which comprises a base, a tank body, a filtering unit, a back washing unit and an unloading unit, wherein a carrier roller for supporting the tank body is arranged on the base; the tank body is composed of a rotary drum and oval seal heads arranged at two ends of the rotary drum, and the filtering unit is arranged in the rotary drum; the utility model discloses compact structure, filtration efficiency is high. The air compressor is used for generating air with different pressures to realize filtering and discharging, and the back washing unit is used for realizing internal cleaning. Through setting up rotary joint, spheroid soft joint isotructure, play the cushioning effect to the vibration that the device operation in-process produced.

Description

Internal filtering type pressurizing rotary drum filter

Technical Field

The utility model belongs to the technical field of solid-liquid separation equipment and specifically relates to an interior formula of straining pressurization rotary drum filter.

Background

The continuous pneumatic filter is a circular tank internal filtering type continuous pneumatic filter, also called a rotary tank continuous pneumatic filter, and is characterized by that in the rotary circular tank interior filtering chambers are set, and every filtering chamber is connected with air-staggering disk of one end of tank body by means of short tube, and the filtered slurry and compressed gas are continuously pressed into the tank body, and in the course of rotation of tank body the filtering, squeezing and drying operations can be continuously implemented. When discharging, gas with pressure higher than the filtering pressure is introduced by the gas staggering disc to blow filter cakes down to the screw conveyor at the center of the tank body to be discharged, and filtrate and exhaust gas penetrating through the filtering chamber are led out by the gas staggering disc through a pipeline.

The existing rotary drum filter has the problems of low efficiency, high water content of filter cakes, narrow adaptation surface and incapability of filtering most materials due to the adoption of negative pressure filtration.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an interior formula of straining pressurization rotary drum filter to there is inefficiency in solving current rotary drum filter, and the filter cake contains water highly, and the adaptation face is narrow, can not filterable problem to most material.

The utility model discloses a realize like this: an internal filtration type pressurized rotary drum filter comprises a base, a motor, a speed reducer, a tank body, a feeding unit, a filtering unit, a pneumatic unit, a backwashing unit and a discharging unit, wherein a carrier roller for supporting the tank body is arranged on the base;

the tank body is composed of a rotary drum and oval end sockets arranged at two ends of the rotary drum, and a liquid baffle plate is arranged between the rotary drum and the end sockets; a rotating shaft connected with the speed reducer is arranged at one end of the tank body, a main shaft and a shaft sleeve are arranged on the outer side of the rotating shaft, and a rotary air-staggering disc is arranged on one side of the main shaft;

the feeding unit comprises a raw material groove connected with the tank body through a feeding pipe, and a feeding pump and a feeding pneumatic valve are arranged on the feeding pipe;

the filter unit comprises a plurality of filter chambers which are uniformly distributed on the inner surface of the rotary drum, each filter chamber is provided with a filter surface, filter cloth is arranged on each filter surface, each filter chamber is correspondingly communicated with the rotary air staggering disc through a flow guide channel steel and a high-pressure hose which are welded outside the rotary drum, and the rotary air staggering disc is communicated with the gas-liquid separator through a liquid outlet pipe;

the back washing unit comprises a washing water tank which is communicated with the tank body through a washing pipe, and a washing pump and a washing electromagnetic valve are arranged on the washing pipe;

the discharging unit comprises a spiral discharging groove horizontally arranged in the center of the tank body, a discharging spiral is arranged in the spiral discharging groove, one end of the spiral discharging groove in the tank body is rotatably supported in the center of the liquid baffle plate, and the other end of the spiral discharging groove penetrates through the other end of the tank body to be connected with a rotary joint and extends outwards;

the pneumatic unit comprises an air compressor, the air compressor is respectively communicated with a high-pressure air storage tank and a low-pressure air storage tank through pipelines, the high-pressure air storage tank is communicated with the rotary air staggering disc through a back-blowing discharge pipe, and the low-pressure air storage tank is communicated with the spiral discharge chute through a low-pressure air pipe.

Preferably, the rotary air-staggering disc comprises a movable disc connected with the main shaft and a static disc abutted against the movable disc; the static disc is provided with an annular mounting structure, the movable disc compresses the static disc and the annular mounting structure, and a first rubber sealing ring is arranged between the outer annular surface of the movable disc and the annular mounting structure.

Preferably, the static disc is communicated with the back-blowing discharging pipe through a first back-blowing pipe and a second back-blowing pipe, and the first back-blowing pipe and the second back-blowing pipe are respectively provided with a first back-blowing electromagnetic valve and a second back-blowing electromagnetic valve.

Preferably, the shaft sleeve is fixedly arranged on the base, the shaft sleeve is cylindrical, the main shaft is embedded in the shaft sleeve, two groups of rolling steel balls are arranged between the contact surface of the main shaft and the shaft sleeve, and second rubber sealing rings are arranged on two sides of the two groups of rolling steel balls.

Preferably, one end of each guide channel steel is closed, the other end of each guide channel steel is communicated with the high-pressure hose, and an arc reinforcing rib plate is arranged between every two adjacent guide channel steel.

Preferably, the tail end of the spiral discharge chute is provided with a discharge bin, the discharge bin comprises an upper bin and a lower bin, a first pneumatic knife gate valve is arranged between the upper bin and the lower bin, a second pneumatic knife gate valve is arranged at the bottom of the lower bin, and the two pneumatic knife gate valves are controlled by a proximity switch and a time relay to alternately act.

Preferably, the discharging device is further provided with a discharging motor, the discharging motor is connected with the discharging screw, and a rotary joint and a rubber soft connection are arranged between the discharging motor and the spiral discharging groove.

Preferably, the rotary discharge chute is connected with the tank body through a rotary joint, a flange is arranged on a rotary joint connecting flange, and the flushing pipe and the feeding pipe penetrate through the flange and extend into the tank body.

Preferably, the filtering surface is a plurality of punched steel plates welded on the inner wall of the rotary drum, and reinforcing support points are welded between the punched steel plates and the inner wall of the rotary drum.

Preferably, a steel plate pressing strip is additionally arranged on the surface of the punching steel plate, and the filter cloth is tightly pressed on the surface of the punching steel plate through the steel plate pressing strip and screws.

Adopt above-mentioned technical scheme, the utility model discloses compact structure, full automatic control, the fault rate is low, and is totally enclosed, and filtration efficiency is high, and the filter cake moisture content is low, uses extensively. The air compressor is used for generating air with different pressures to realize filtering and discharging, and the back washing unit is used for realizing internal cleaning. Through setting up rotary joint, spheroid soft joint isotructure, play the cushioning effect to the vibration that the device operation in-process produced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

FIG. 2 is a schematic structural view of the movable disk of the present invention;

fig. 3 is a schematic structural diagram of the stationary disc of the present invention;

FIG. 4 is a side view schematic of the stationary plate of the present invention;

fig. 5 is a schematic structural view of the rotary air-staggering disc of the present invention;

fig. 6 is a schematic structural view of the drum of the present invention;

FIG. 7 is an enlarged partial schematic view of FIG. 6;

fig. 8 is a schematic structural view of the shaft sleeve of the present invention;

fig. 9 is a schematic structural view of the spindle of the present invention;

fig. 10 is a schematic view of the tube sealing structure of the present invention.

In the figure: 1-base, 2-carrier roller, 3-rotary drum, 4-oval head, 5-spiral discharge chute, 6-discharge spiral, 7-first rotary joint, 8-filter chamber, 9-filter surface, 10-rotary air-staggering disk, 101-movable disk, 102-static disk, 103-annular mounting structure, 104-first rubber seal ring, 11-high pressure hose, 12-gas-liquid separator, 13-air compressor, 14-high pressure air storage tank, 15-low pressure air storage tank, 16-back-blowing discharge pipe, 17-low pressure air pipe, 18-flushing pump, 19-flushing pipe, 20-high pressure reducing valve, 21-low pressure reducing valve, 22-discharge bin, 23-first pneumatic knife gate valve, 24-inlet pipe, 25-rubber soft coupling, 26-reinforced support point, 27-filter cloth, 28-liquid baffle, 29-main shaft, 30-shaft sleeve, 31-annular groove, 32-rolling steel ball, 33-oil filler hole, 34-second rubber seal ring, 35-raw material tank, 36-liquid outlet pipe, 37-steel plate pressing strip, 38-flow guide channel steel, 39-arc reinforcing rib plate, 40-flushing water tank, 41-second pneumatic knife gate valve, 42-first back-flushing pipe, 43-second back-flushing pipe, 44-inner screw sleeve, 45-rubber sleeve, 46-hollow screw and 47-second rotary joint.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in figures 1-10, the utility model provides an internal filtering type pressurizing rotary drum filter, which comprises a base 1, a motor, a speed reducer, a tank body, a feeding unit, a filtering unit, a pneumatic unit, a back washing unit and a discharging unit, wherein a supporting roller 2 for supporting the tank body is arranged on the base 1. The tank body is composed of a rotary drum 3 and oval seal heads 4 arranged at two ends of the rotary drum 3, and the filter unit is arranged in the rotary drum 3. Wherein, a liquid baffle plate 28 is arranged between the rotary drum 3 and the elliptical head 4. Further, a rotating shaft connected to a speed reducer is provided at one end of the tank, a main shaft 29 and a shaft sleeve 30 are provided outside the rotating shaft, and a rotary air-entraining disk 10 is provided on one side of the main shaft 29. The shaft sleeve 30 is cylindrical, the shaft sleeve 30 is fixedly arranged on the base 1, the main shaft 29 is cylindrical and can be embedded into the shaft sleeve 30, two annular grooves 31 are formed in the outer annular surface of the main shaft 29, rolling steel balls 32 are arranged in the annular grooves 31, and preferably, oil injection holes 33 are formed in the positions, corresponding to the annular grooves 31, of the shaft sleeve 30. Under the supporting action of the rolling steel balls 32, the main shaft 29 and the shaft sleeve 30 can rotate relatively. Preferably, a second rubber sealing ring 34 is provided on the outer side of each of the two rolling steel columns 32 to prevent the lubricant oil from flowing out.

Wherein, the rotary air-staggering disc 10 comprises a movable disc 101 connected with the main shaft 29 and a static disc 102 abutted against the movable disc 101; an annular mounting structure 103 is provided on the stationary disc 102, the movable disc 101 is clamped in the annular mounting structure 103 by pressing the stationary disc 102, and a first rubber seal 104 is provided between the outer circumferential surface of the movable disc 101 and the annular mounting structure 103. Further, the movable plate 101 is made of stainless steel material, the fixed plate 102 is made of non-metal wear-resistant material, and the movable plate 101 and the fixed plate 102 are pressed tightly through a screw rod and a spring (not shown). The first rubber seal 104 functions to prevent leakage of liquid and gas.

Further, the utility model discloses a feed unit includes raw material tank 35, and raw material tank 35 passes through inlet pipe 24 and jar body intercommunication. The feed pipe 24 is provided with a solenoid valve and a feed pump, and the solenoid valve and the feed pump operate simultaneously.

Further, the filtering unit comprises a plurality of filtering chambers 8 uniformly distributed on the inner surface of the rotary drum 2, a filtering surface 9 is arranged on each filtering chamber 8, and a filtering cloth 27 is arranged on each filtering surface 9. The filtering surface 9 is a punched steel plate welded on the inner wall of the rotary drum, and a reinforced supporting point 26 is welded between the punched steel plate and the inner wall of the rotary drum. A steel plate pressing strip 37 is additionally arranged on the surface of the punching steel plate, and the filter cloth 27 is tightly pressed on the surface of the punching steel plate through the steel plate pressing strip 37 and screws. Each filter chamber 8 is correspondingly communicated with the rotary gas staggering disc 10 through a flow guide channel steel and a high-pressure hose 11, and the rotary gas staggering disc 10 is communicated with the gas-liquid separator 12 through a liquid outlet pipe 36. Furthermore, one end of each guide channel steel 38 is closed, the other end of each guide channel steel is communicated with the high-pressure hose 11, and an arc-shaped reinforcing rib plate 39 is arranged between every two adjacent guide channel steel 38, so that the compressive strength of the rotary drum is enhanced.

Furthermore, the back washing unit comprises a washing water tank 40, the washing water tank 40 is communicated with the tank body through a washing pipe 19, and a washing pump 18 and a washing electromagnetic valve are arranged on the washing pipe 19.

Further, the discharging unit comprises a spiral discharging groove 5 horizontally arranged in the center of the tank body, a discharging spiral 6 is arranged in the spiral discharging groove 5, one end of the spiral discharging groove 5 is arranged in the tank body, and the other end of the spiral discharging groove 5 penetrates through the tank body and extends out. One end of the spiral discharging groove 5 positioned in the tank body is rotationally connected with the liquid baffle plate 28 at the same side. Further, the spiral discharging groove 5 is connected with the tank body through a first rotary joint 7, and a flange is arranged on the first rotary joint 7. The tail end of the spiral discharging groove 5 is provided with a discharging bin 22, the discharging bin 22 comprises an upper bin and a lower bin, a first pneumatic knife gate valve 23 is arranged between the upper bin and the lower bin, and a second pneumatic knife gate valve 41 is arranged at the bottom of the lower bin. The two pneumatic knife gate valves are controlled by a proximity switch and a time relay to alternately act. The spiral discharging device is also provided with a discharging motor, the discharging motor is connected with the discharging spiral 6, a second rotary joint 47 and a rubber soft connection 25 are arranged between the discharging motor and the spiral discharging groove, and the second rotary joint solves the sealing problem of the spiral shaft during rotation. The rubber soft coupling 25 can reduce the vibration of the device while transmitting the torque.

Further, the pneumatic unit comprises an air compressor 13, the air compressor 13 is respectively communicated with a high-pressure air storage tank 14 and a low-pressure air storage tank 15 through pipelines, the high-pressure air storage tank 14 is communicated with the rotary air staggering disc 10 through a back blowing discharge pipe 16, and the low-pressure air storage tank 15 is communicated with the spiral discharge chute 5 through a low-pressure air pipe 17. A high-pressure reducing valve 20 is provided in a pipe between the air compressor 13 and the high-pressure air tank 14, and a low-pressure reducing valve 21 is provided in a pipe between the air compressor 13 and the low-pressure air tank 15. Furthermore, a first blowback pipe 42 and a second blowback pipe 43 are arranged between the blowback discharge pipe 16 and the static disc 102 of the rotary air stagger disc 10, a first blowback solenoid valve is arranged on the first blowback pipe 42, and a second blowback solenoid valve is arranged on the second blowback pipe. When discharging, the first back-blowing electromagnetic valve is intermittently opened, and the high-pressure gas in the first back-blowing pipe 42 forms a pulse airflow to enter the filter chamber, so that the filter cake is blown down to the discharging screw. When cleaning, the rotary drum reverses, the second back-blowing electromagnetic valve and the flushing electromagnetic valve are opened simultaneously, and water drops on the surface of the filter cloth are blown off by high-pressure air to prevent the water drops from dropping into the discharging screw 6.

Furthermore, the flushing pipe 19 and the feeding pipe 24 extend into the tank body through the flange. As an embodiment, an inner screw cylinder sleeve 44 is welded at the lower part of the flange, a rubber sleeve 45 is arranged between the pipe and the inner screw cylinder sleeve 44 and is tightly pressed by a hollow screw 46, and the rubber sleeve 45 can prevent air leakage after being tightly pressed.

Preferably, a protective cover (not shown) may be automatically disposed outside the drum filter, and the elements may be enclosed in the protective cover for protection. A plurality of access doors and other structures can be arranged on the protective cover.

The utility model discloses a working process is: slurry is pumped into the rotary drum 3 from a raw material groove through a feeding pipe 24, and when a certain liquid level is reached (optionally monitored by a liquid level meter), the rotary drum 3 is automatically started and low-pressure compressed air is injected through a low-pressure air storage tank 15. In the rotary drum 3, a plurality of independent filter chambers 8 are connected with a rotary gas-crossing disc 10 through a high-pressure hose 11, and the rotary gas-crossing disc 10 is communicated with a gas-liquid separator 12, so that a pressure difference is formed between the filter area and the outside. The filtrate under pressure permeates through the filter medium (filter cloth 27) and enters the gas-liquid separator 12 through the rotary gas-displacement disk 10 to be discharged. The solid matter is trapped on the surface of the filter cloth 27 to form a filter cake. And (3) rotating the rotary drum 3 continuously, rotating the filter cake out of the filtering area, continuously discharging residual liquid entering the drying area under the action of pressure, automatically opening the discharge screw 6 when the dried filter cake rotates right above the rotary drum 3, opening the electromagnetic valve on the first back-blowing pipe 42, falling the dried filter cake into the discharge screw 6 under the back-blowing action of high-pressure air pressure, and conveying the filter residue to the discharge bin 22 by the discharge screw 6. The discharging bin 22 is divided into an upper bin and a lower bin, pneumatic knife gate valves 23 are arranged between the upper bin and the lower bin and at the discharge port of the lower bin, and the two pneumatic knife gate valves 23 act alternately. The air pressure in the tank body is kept unchanged during discharging. The whole filtering process is automatically and continuously carried out.

The utility model discloses compact structure, degree of automation is high, and the fault rate is low, and is totally enclosed, and filtration efficiency is high, and the filter cake moisture content is low, and the range of application is wide. The air compressor is used for generating air with different pressures to realize filtering and discharging, and the back washing unit is used for realizing internal cleaning. The rotary joint is arranged to play a sealing role in compressed air in the operation process of the device. The soft spherical joint plays a role in buffering vibration generated in the running process of the device.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. An internal filtration type pressurized rotary drum filter is characterized by comprising a base, a motor, a speed reducer, a tank body, a feeding unit, a filtering unit, a pneumatic unit, a backwashing unit and a discharging unit, wherein a carrier roller for supporting the tank body is arranged on the base;

the discharging unit comprises a spiral discharging groove horizontally arranged in the center of the tank body, a discharging spiral is arranged in the spiral discharging groove, one end of the spiral discharging groove in the tank body is rotatably supported in the center of the liquid baffle plate, and the other end of the spiral discharging groove penetrates through the other end of the tank body to be connected with a first rotary joint and extends outwards;

2. The internal filter type pressure drum filter according to claim 1, wherein the rotary air-staggering disc comprises a movable disc connected with the main shaft and a static disc abutted against the movable disc; the static disc is provided with an annular mounting structure, the movable disc compresses the static disc and the annular mounting structure, and a first rubber sealing ring is arranged between the outer annular surface of the movable disc and the annular mounting structure.

3. The internal-filtering type pressure drum filter according to claim 2, wherein the static disc is communicated with the back-blowing discharging pipe through a first back-blowing pipe and a second back-blowing pipe, and the first back-blowing solenoid valve and the second back-blowing solenoid valve are respectively arranged on the first back-blowing pipe and the second back-blowing pipe.

4. The internal filtration type pressure drum filter according to claim 1, wherein the shaft sleeve is fixedly arranged on the base, the shaft sleeve is cylindrical, the main shaft is embedded in the shaft sleeve, two sets of rolling steel balls are arranged between the contact surface of the main shaft and the shaft sleeve, and second rubber sealing rings are arranged on two sides of the two sets of rolling steel balls.

5. The internal filtering type pressurized rotary drum filter according to claim 1, wherein one end of each of the flow guide channel steel is closed, the other end of each of the flow guide channel steel is communicated with the high-pressure hose, and an arc-shaped reinforcing rib plate is arranged between the adjacent flow guide channel steel.

6. The internal filtering type pressure rotary drum filter according to claim 1, wherein a discharge bin is arranged at the end of the spiral discharge chute, the discharge bin comprises an upper chamber and a lower chamber, a first pneumatic knife gate valve is arranged between the upper chamber and the lower chamber, a second pneumatic knife gate valve is arranged at the bottom of the lower chamber, and the two pneumatic knife gate valves are controlled by a proximity switch and a time relay to alternately act.

7. The internal filtering type pressure rotary drum filter as claimed in claim 1, wherein a discharging motor is further provided, the discharging motor is connected with the discharging screw, and a second rotary joint and a rubber soft joint are arranged between the discharging motor and the screw discharging groove.

8. The internal filtration type pressurized rotary drum filter according to claim 1, wherein the spiral discharge chute is connected with the tank body through a rotary joint, a flange is arranged on the rotary joint connecting flange, and the flushing pipe and the feeding pipe penetrate through the flange and extend into the tank body.

9. The internal filtering type pressure drum filter as claimed in claim 1, wherein the filtering surface is a plurality of punched steel plates welded on the inner wall of the drum, and reinforcing support points are welded between the punched steel plates and the inner wall of the drum.

10. The internal filtering type pressure drum filter according to claim 9, wherein a steel plate pressing strip is additionally arranged on the surface of the punched steel plate, and the filter cloth is tightly pressed on the surface of the punched steel plate through the steel plate pressing strip and screws.