CN216878020U - Continuous filtering and separating equipment for viscous salt-containing liquid - Google Patents

Abstract

The utility model discloses continuous filtering and separating equipment for viscous salt-containing liquid, which comprises a power mechanism and a continuous filtering and separating system, wherein the power mechanism comprises a driving extrusion roll shaft, four driven roll shafts and an annular filter belt; the continuous filtration separation system comprises a sieve plate and a circulation system. The continuous filtering and separating equipment for the viscous salt-containing liquid disclosed by the utility model can realize small-batch sealed and continuous production, is high in production efficiency and yield, does not artificially cause external pollution, and ensures the quality of products.

Description

Continuous filtering and separating equipment for viscous salt-containing liquid

Technical Field

The utility model relates to the technical field of separation, in particular to continuous filtering and separating equipment for viscous liquid with salt.

Background

In the resin synthesis process, a catalyst and an acid-binding agent are used, organic salt with micron grade and density similar to that of a solution is generated, and when the organic salt is filtered, intermittent filtration such as negative pressure filtration or positive pressure filtration is usually adopted, so that the defects of small batch treatment capacity and low efficiency are overcome. The existing continuous filtering equipment in the market also shows the defects of low efficiency and low yield when processing high-viscosity liquid, and the filtered salt needs to be taken out manually, so that time and labor are wasted, the continuous automatic closed production is interrupted, and the possibility of introducing external pollution is increased. For example: the synthesis of the polyamic acid ester, when the acyl chlorination process is adopted, can generate a large amount of triethylamine hydrochloride or pyridine hydrochloride, and the production batch of the polyamic acid ester is generally not higher than 200kg, and the single salt amount is 10-30 kg. Most of conventional treatment modes of the materials with the magnitude adopt a belt filter or a plate filter, but sealed continuous production cannot be realized when filter cakes are treated, organic matters are volatilized to pollute the environment when the filter cakes are treated intermittently, and in addition, resin is polluted due to introduction of particles in the external environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide continuous filtering and separating equipment for viscous and salt-containing liquid, which is used for solving the problem that the conventional equipment cannot carry out sealed continuous separation on the viscous and salt-containing liquid.

The utility model provides continuous filtering and separating equipment for viscous salt-containing liquid, which comprises a power mechanism and a continuous filtering and separating system, wherein the power mechanism comprises a driving extrusion roll shaft, four driven roll shafts and an annular filter belt, and the driving extrusion roll shaft is closely adjacent to one driven roll shaft for extrusion; the four driven roller shafts are distributed at four corners of the annular filter belt, the annular filter belt is tightly attached to the outer sides of the four driven roller shafts, and the four driven roller shafts support and drive the annular filter belt to do annular circulating motion;

the continuous filtration separation system comprises: the sieve plate is horizontally arranged below the annular filter belt, is attached to the bottom of the annular filter belt and is used for receiving and separating filtrate or filter cakes falling into the annular filter belt from the annular filter belt; the circulating system comprises a liquid recovery cavity, a filtrate storage cavity, a filter cake washing cavity and a filter cake discharging bin, wherein the liquid recovery cavity is arranged below the driven roller shaft adjacent to the driving extrusion roller shaft and used for receiving liquid extruded by the driving extrusion roller shaft and the driven roller shaft, a liquid discharge pipe is arranged at the bottom of the liquid recovery cavity, and the filtrate storage cavity is arranged below the liquid discharge pipe; the filter holes are formed in the bottoms of the filtrate storage cavity and the filter cake washing cavity, and the filtrate storage cavity, the filter cake washing cavity and the filter cake discharging bin are sequentially arranged on the sieve plate and located between the two driven roller shafts along the direction of circular circulating motion;

and a filter cake discharge hole is formed below the filter cake discharge bin.

The filter cake washing and filtering device comprises a filter cake washing and filtering cavity, a filter sieve plate and a filter cake storage cavity, wherein the filter cake washing and filtering cavity is arranged in the filter cake washing and filtering cavity; wherein, the vacuum pump provides filtration negative pressure power for the negative pressure filtrating collection tank, promotes negative pressure filtrating collection tank and collects the filtrating of following the liquid outlet outflow of filtrating collection chamber.

Furthermore, the power mechanism further comprises a shell, the motor is arranged on the shell, and an output shaft of the motor is fixedly connected with the driving extrusion roll shaft.

Further, a feeding pipe is arranged above the filtrate storage cavity and connected with the liquid discharge pipe through a three-way joint.

Furthermore, the sieve plate comprises a filtrate storage cavity corresponding part, a filter cake washing cavity corresponding part and a filter cake discharging bin corresponding part, wherein the lengths of the filtrate storage cavity corresponding part, the filter cake washing cavity corresponding part and the filter cake discharging bin corresponding part are respectively equal to the lengths of the filtrate storage cavity, the filter cake washing cavity and the filter cake discharging bin, and a plurality of filter holes are arranged at intervals on the filtrate storage cavity corresponding part and the filter cake washing cavity corresponding part and used for discharging filtrate; the corresponding part of the filter cake discharging bin is a light panel without a filter hole; the corresponding part of the filtrate storage cavity and the corresponding part of the filter cake washing and filtering cavity are separated by arranging a filtrate scraping strip; the corresponding part of the filter cake washing and filtering cavity and the corresponding part of the filter cake discharging bin are separated by arranging a filter cake scraping strip.

Furthermore, the outer end of the filter cake discharging bin is of an arc-shaped structure which is tilted upwards.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model discloses continuous filtration and separation equipment for viscous salt-containing liquid.A driving extrusion roller shaft and a driven roller shaft adjacent to the driving extrusion roller shaft compact filter cloth in the extrusion process, and extrude the liquid in the filter cloth while providing running power for an annular filter belt; the sieve plate receives and separates the filtrate or filter cake falling from the annular filter belt; the circulating system circularly transports filtrate in the equipment along the direction of circular circulating motion along with the power mechanism, and the filtrate enters the equipment to realize continuous filtration and separation of viscous salt-containing liquid in a closed environment. The continuous filtering and separating equipment for the viscous salt-containing liquid disclosed by the utility model can realize small-batch sealed and continuous production, is high in production efficiency and yield, does not artificially cause external pollution, and ensures the quality of products.

In addition, the continuous filtering and separating equipment for the viscous liquid with salt disclosed by the utility model also has the following advantages:

1. the equipment can be very small, is suitable for filtering and producing high-value small-batch compounds, and even can be practical in a laboratory, and the whole material adopts PP (polypropylene), or fluorine-coated material can meet the production requirement of electronic grade materials.

2. The filter cake is continuously produced, the requirement of the production line on airtight reaction is met, the product can be filtrate or filter cake, and the equipment can meet the requirement of clean airtight production.

3. The equipment can be cleaned on line at the same time when the front end of the equipment is cleaned, and a cleaning system does not need to be configured independently.

4. The annular filter belt is made of PP or PTFE materials and is durable, liquid in the filter cloth is discharged by the extrusion of the driving extrusion roll shaft, and meanwhile salt attached to the surface is backwashed, so that the filtering efficiency can be greatly increased. Can be repeatedly used after being cleaned, and is not required to be frequently replaced.

5. The negative pressure is used as the filtering power, so that the materials can be completely filtered and almost not damaged. The method is more beneficial to filtering high-value materials, improves the yield and improves the economic benefit.

6. While the annular filter belt rotates slowly, the filter liquor storage cavity accumulates a certain filter layer and then enters a filter cake washing filter cavity to form a 2-3mm filter layer, gas is introduced from the upper part of the filter cake washing filter cavity, and a small amount of residual materials in the filter layer are filtered out quickly. When the product has no requirement on viscosity, a small amount of solvent can be used for washing the filter layer in a spraying mode.

7. The filter cake goes out the feed bin, and it can make all filter cakes shoveled to hold back to press close to the filter cloth design, and loose material can all be easily held back in the cavity with having the viscosity material, and 45 oblique arc shape designs can make the material easily pushed filter cake collection device or container or pipeline in the motion of annular filter belt.

Drawings

FIG. 1 is a schematic structural diagram of a continuous filtration separation apparatus for viscous salt-containing liquids provided in example 1 of the present invention;

fig. 2 is a top view of a screen panel provided in example 1 of the present invention.

Description of reference numerals: 1-a housing; 21-motor, 22-driving extrusion roll shaft, 23-driven roll shaft and 24-annular filter belt; 30-sieve plate, 301-corresponding part of filtrate storage cavity, 302-corresponding part of filter cake washing cavity, 303-corresponding part of filter cake discharging bin, 304-filtrate scraping strip, 305-filter cake scraping strip; 31-a liquid recovery cavity, 32-a filtrate storage cavity, 320-a feed pipe, 33-a filter cake washing and filtering cavity, 330-a nitrogen inlet, 34-a filter cake discharging bin and 35-a filter cake discharging port; 41-filtrate collecting cavity and 42-negative pressure filtrate collecting tank.

Detailed Description

The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

Example 1: continuous filtering and separating equipment for viscous salt-containing liquid

Example 1 provides a continuous filtration separation apparatus for viscous salt-bearing liquids, the structure of which is described in detail below with reference to the drawings.

Referring to fig. 1, the continuous filtering and separating device for viscous salt-containing liquid comprises a shell 1, a power mechanism and a continuous filtering and separating system.

The power mechanism comprises a motor 21, a driving extrusion roller shaft 22, four driven roller shafts 23 and an annular filter belt 24.

The motor 21 is arranged on the shell 1, and an output shaft of the motor 21 is fixedly connected with the driving extrusion roll shaft 22;

the driving extrusion roller shaft 22 is extruded in close proximity to one of the driven roller shafts 23;

the four driven roll shafts 23 are distributed at four corners of the annular filter belt 24, the annular filter belt 24 is tightly attached to the outer sides of the four driven roll shafts 23, and the four driven roll shafts 23 support together and drive the annular filter belt 24 to do annular circulating motion;

wherein, the annular filter belt 24 is provided with filter cloth, the driving extrusion roller shaft 22 and the driven roller shaft 23 adjacent to the driving extrusion roller shaft compact the filter cloth in the extrusion process, and liquid in the filter cloth is extruded while the annular filter belt 24 runs.

The continuous filtration separation system comprises:

the sieve plate 30 is fixed in the shell 1, horizontally arranged below the annular filter belt 24, attached to the bottom of the annular filter belt 24 and used for receiving and separating filtrate or filter cakes falling from the annular filter belt 24;

the circulating system comprises a liquid recovery cavity 31, a filtrate storage cavity 32, a filter cake washing cavity 33 and a filter cake discharging bin 34, wherein the liquid recovery cavity 31 is arranged below the driven roller shaft 23 which is close to the driving extrusion roller shaft 22 and is used for receiving liquid extruded by the driving extrusion roller shaft 22 and the driven roller shaft 23, a liquid discharge pipe is arranged at the bottom of the liquid recovery cavity 31, and the filtrate storage cavity 32 is arranged below the liquid discharge pipe; the bottom parts of the filtrate storage cavity 32 and the filter cake washing cavity 33 are provided with filter holes, and the filtrate storage cavity 32, the filter cake washing cavity 33 and the filter cake discharging bin 34 are sequentially arranged on the sieve plate 30 and positioned between the two driven roll shafts 23 along the direction of circular circulating motion;

a filter cake discharge port 35 is arranged below the filter cake discharge bin 34.

In order to output the liquid accumulated on the sieve plate 30 as soon as possible and improve the continuous filtering and separating efficiency, the continuous filtering and separating equipment for the viscous liquid with salt further comprises a filtrate collecting device, wherein the filtrate collecting device comprises a filtrate collecting cavity 41, a negative pressure filtrate collecting tank 42 and a vacuum pump, the filtrate collecting cavity 41 is arranged right below the sieve plate 30 and is opposite to the filtrate storage cavity 32 and the filter cake washing and filtering cavity 33, liquid outlets of the negative pressure filtrate collecting tank 42 and the filtrate collecting cavity 41 are communicated through a pipeline, and the negative pressure filtrate collecting tank 42 is in butt joint with the vacuum pump through a pipeline;

wherein, the vacuum pump provides filtration negative pressure power for the negative pressure filtrate collection tank 42, and pushes the negative pressure filtrate collection tank 42 to collect the filtrate flowing out from the filtrate outlet of the filtrate collection cavity 41.

In order to input the filtrate into the filtrate storage chamber 32, a feed pipe 320 is provided above the filtrate storage chamber 32, and specifically, the feed pipe 320 is connected to a drain pipe through a tee joint.

In a specific embodiment, referring to fig. 2, the sieve plate 30 includes a corresponding part 301 of the filtrate storage chamber, a corresponding part 302 of the filter cake washing chamber, and a corresponding part 303 of the filter cake discharging bin, wherein the lengths of the corresponding part 301 of the filtrate storage chamber, the corresponding part 302 of the filter cake washing chamber, and the corresponding part 303 of the filter cake discharging bin are respectively equal to the lengths of the filtrate storage chamber 32, the filter cake washing chamber 33, and the filter cake discharging bin 34,

a plurality of filter holes are arranged on the corresponding part 301 of the filtrate storage cavity and the corresponding part 302 of the filter cake washing cavity at intervals and used for discharging filtrate; the corresponding part 303 of the filter cake discharging bin is a light panel without filter holes;

the corresponding part 301 of the filtrate storage cavity and the corresponding part 302 of the filter cake washing cavity are separated by arranging a filtrate scraping strip 304; the corresponding part 302 of the filter cake washing and filtering cavity and the corresponding part 303 of the filter cake discharging bin are separated by arranging a filter cake scraping strip 305.

Preferably, the pore diameter of the filter pores at the bottoms of the filtrate storage cavity 32 and the filter cake washing and filtering cavity 33 is 500-800 meshes.

In order to clean the filter cake in the filter cake washing chamber 33, a nitrogen inlet 330 is provided on the filter cake washing chamber 33 for connecting with a nitrogen source.

For the convenience of filter cake material is extruded, the outer end that the filter cake goes out feed bin 34 is the arc structure of perk upwards, and the filter cake goes out feed bin 34 bottom and pastes tight filter cloth fixed shovel material angle, and the totality is 45 oblique angles and is partial to filter cake discharge gate 35.

The working outflow of the continuous filtering and separating equipment for viscous salt-containing liquid mainly comprises the following steps:

the liquid on the filter cloth is squeezed to fall into the liquid recovery cavity 31 and flows into the filtrate storage cavity 32 through a liquid discharge pipe;

a part of the liquid flows into the filtrate collecting cavity 41 through the filtering holes at the bottom of the filtrate storage cavity 32; the other part is conveyed to a filter cake washing and filtering cavity 33 along the annular filter belt 24, wherein a part of liquid forms filter cake solid under the high pressure of nitrogen;

the filter cake solids are conveyed into a filter cake discharge bin 34 along the annular filter belt 24, and most of the filter cake solids flow out of the equipment from a filter cake discharge port 35;

the liquid continues to be transported along the filter cloth of the endless filter belt 24 to below the driven roller shaft 23 in the immediate vicinity of the driving squeeze roller shaft 22, and the above-described steps are repeated, thereby forming a circulation circuit.

Example 2: continuous separation method of viscous liquid with salt

Example 2 provides a continuous separation process for viscous salted liquid using the continuous filtration separation apparatus for viscous salted liquid of example 1, comprising the steps of:

introducing clean solvent into the filtrate storage cavity 32 and the filter cake washing and filtering cavity 33;

starting continuous filtering and separating equipment, keeping the motor 21 running at a medium speed, cleaning a liquid recovery cavity 31, a filtrate storage cavity 32, a filter cake washing and filtering cavity 33 and a filtrate collecting cavity 41, simultaneously rinsing the annular filter belt 24, closing the continuous filtering and separating equipment after cleaning, and filling nitrogen into the filter cake washing and filtering cavity 33 through a nitrogen inlet 330 for protection and standby;

delivering viscous saline solution to filtrate reservoir 32 through feed line 320;

the negative pressure filtrate collection tank 42 is butted with a vacuum pump;

starting the motor 21, keeping the motor 21 running at a low speed, and starting the annular filter belt 24 to rotate slowly;

the salt filtering layer enters a filter cake washing and filtering cavity 33;

introducing nitrogen, filtering out residual glue solution in a salt layer of 2-3mm in the filter cake washing and filtering cavity 33, and allowing the filtrate to enter a negative pressure filtrate collecting tank 42 under the dual actions of air pressure and negative pressure, so as to perform corresponding temperature protection treatment on the tank body;

the filter layer enters a filter cake discharge bin 34 and is extruded into a filter cake discharge port 35 to be discharged according to an arc angle under the driving of an annular filter belt 24;

the annular filter belt 24 runs to the driving extrusion roll shaft 22, the driven roll shaft 23 extrudes the filter cloth in the extrusion process of the driving extrusion roll shaft 22 adjacent to the driven roll shaft, filtrate in the filter cloth is extruded out, and residual salt is collected by the liquid recovery cavity 31;

the collected liquid enters the filtrate storage cavity 32 through a liquid discharge pipe for filtration treatment;

when the pressure of the negative pressure filtrate collecting tank 42 begins to rise, the filtration of the filtrate is finished, and the operation is continued for 3-5min to ensure that the filtration of all the residual glue solution is finished.

After the equipment stops running, the filtrate in the negative pressure filtrate collecting tank 42 can enter the next process; the filter is cleaned while the reaction equipment is cleaned, and the nitrogen is protected for standby.

Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims (7)

1. A continuous filtration and separation device for viscous and salty liquid is characterized by comprising a power mechanism,

the power mechanism comprises a driving extrusion roll shaft (22), four driven roll shafts (23) and an annular filter belt (24), the four driven roll shafts (23) are distributed at four corners of the annular filter belt (24), the annular filter belt (24) is tightly attached to the outer sides of the four driven roll shafts (23), and the four driven roll shafts (23) support the annular filter belt (24) together;

the driving extrusion roll shaft (22) is extruded in close proximity to one driven roll shaft (23), and the annular filter belt (24) passes between the driving extrusion roll shaft (22) and the driven roll shaft (23) which is stacked in close proximity to the driving extrusion roll shaft;

and the annular filter belt (24) is driven by the driving extrusion roll shaft (22) to do circular motion.

2. The continuous filtration separation apparatus of viscous salt-bearing liquid according to claim 1, further comprising a continuous filtration separation system,

the continuous filtration separation system comprises:

the sieve plate (30) is horizontally arranged below the annular filter belt (24), is attached to the bottom of the annular filter belt (24) and is used for receiving and separating filtrate or filter cakes falling into the annular filter belt (24);

the circulating system comprises a liquid recovery cavity (31), a filtrate storage cavity (32), a filter cake washing cavity (33) and a filter cake discharging bin (34), wherein the liquid recovery cavity (31) is arranged below a driven roll shaft (23) which is close to the driving extrusion roll shaft (22) and used for receiving liquid extruded by the driving extrusion roll shaft (22) and the driven roll shaft (23), a liquid discharge pipe is arranged at the bottom of the liquid recovery cavity (31), and the filtrate storage cavity (32) is arranged below the liquid discharge pipe; the filter holes are formed in the bottoms of the filtrate storage cavity (32) and the filter cake washing cavity (33), and the filtrate storage cavity (32), the filter cake washing cavity (33) and the filter cake discharging bin (34) are sequentially arranged on the sieve plate (30) along the direction of circular circulating motion and are positioned between the two driven roll shafts (23);

and a filter cake discharge hole (35) is formed below the filter cake discharge bin (34).

3. The continuous filtration separation apparatus of viscous salt-bearing liquid according to claim 2, further comprising a filtrate collection device,

the filtrate collecting device comprises a filtrate collecting cavity (41), a negative pressure filtrate collecting tank (42) and a vacuum pump, wherein the filtrate collecting cavity (41) is arranged right below the sieve plate (30) and is just opposite to the filtrate storage cavity (32) and the filter cake washing and filtering cavity (33), the liquid outlets of the negative pressure filtrate collecting tank (42) and the filtrate collecting cavity (41) are communicated through a pipeline, and the negative pressure filtrate collecting tank (42) is butted with the vacuum pump through a pipeline;

wherein, the vacuum pump provides filtration negative pressure power for negative pressure filtrating collecting tank (42), promotes negative pressure filtrating collecting tank (42) and collects the filtrating that flows out from the liquid outlet of filtrating collecting chamber (41).

4. The continuous filtration and separation device of viscous saline liquid according to claim 1, further comprising a housing (1), wherein the power mechanism further comprises a motor (21),

the motor (21) is arranged on the shell (1), and an output shaft of the motor (21) is fixedly connected with the driving extrusion roll shaft (22).

5. The continuous filtration separation apparatus of viscous salt-bearing liquid according to claim 2,

the filter liquor storage cavity (32) top is provided with inlet pipe (320), inlet pipe (320) with the fluid-discharge tube passes through three way connection and connects.

6. The continuous filtration separation apparatus of viscous salt-bearing liquid according to claim 2,

the sieve plate (30) comprises a filtrate storage cavity corresponding part (301), a filter cake washing cavity corresponding part (302) and a filter cake discharging bin corresponding part (303), wherein the lengths of the filtrate storage cavity corresponding part (301), the filter cake washing cavity corresponding part (302) and the filter cake discharging bin corresponding part (303) are respectively equal to the lengths of the filtrate storage cavity (32), the filter cake washing cavity (33) and the filter cake discharging bin (34),

a plurality of filter holes are arranged on the corresponding part (301) of the filtrate storage cavity and the corresponding part (302) of the filter cake washing and filtering cavity at intervals and used for discharging filtrate; the corresponding part (303) of the filter cake discharging bin is a light panel (19) without a filter hole;

the corresponding part (301) of the filtrate storage cavity and the corresponding part (302) of the filter cake washing cavity are separated by arranging a filtrate scraping strip (304); the filter cake washing and filtering cavity corresponding part (302) and the filter cake discharging bin corresponding part (303) are separated by arranging a filter cake scraping strip (305).

7. The continuous filtration separation apparatus of viscous salt-bearing liquid according to claim 2,

the outer end of the filter cake discharging bin (34) is of an arc-shaped structure which is tilted upwards.

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