CN201534023U - A continuous pressure filter integrating filtration, washing and drying - Google Patents

Abstract

The utility model relates to a continuous pressure filter integrating filtering, washing and drying. Its structural feature is that the body is cylindrical, and the surface of the cylinder is equipped with a drum, secondary cleaning water inlet, pressurization unit, pre-drying medium inlet, filter cloth cleaning mechanism, filtrate inlet, primary cleaning water inlet, filter unit room, filtrate The flow tube, the product outlet is located at the bottom of the body, which is equipped with a scraper system and a sight glass, the filtrate flow tube is located in the center of the tube, and the body is located between the two bearing brackets; the circumference of the customized distribution head system is equipped with a distribution control head. Cover, secondary cleaning mother liquor water outlet, pre-drying medium outlet, backflush gas inlet I, backflush gas inlet II, backflush gas inlet III, filtrate outlet, and secondary cleaning mother liquor water outlet. The utility model has the advantages of compact model, strong structural integrity, small occupied area, and integrates the functions of filtering, washing, pre-drying and unloading, and overcomes the limitation of the existing filter in the process of use.

Description

A continuous pressure filter integrating filtration, washing and drying

technical field

The utility model relates to a continuous production type pressure filter integrating filtering, washing and drying functions.

Background technique

The filtrates of different substances are continuously filtered under pressure on the drum of the pressure filter, and the filtration, washing, pre-drying and unloading of the filtrate are processed separately in specific different pressure area unit chambers. The separated filter cake, filtrate, Dry gas can be recovered separately to meet the needs of industrial multi-purpose. Existing filters are mainly divided into the following structures:

(1) A pressurized filtration equipment used in the PTA industry is to complete the filtration of PTA by increasing the pressure on the filter side of the mother liquor and increasing the pressure difference on both sides of the filter to improve the filtration efficiency.

Its technical limitation is that the drainage in the drum is not smooth, and the pressure difference on both sides of the filter is not easy to control.

(2) A rotary drum pressurized filter (patent No. CN97223279.6) and a cylindrical inner filter pressurized filter (patent No.: 88221356.3), the technology is that the filter drum has multiple pressurized grooves At the same time, there is a certain amount of compressed air in the pressurized chamber, and the air pressure difference is formed through the distribution valve and the air-water separator through the atmosphere. Under the action of the pressure difference, the filter cake and washing water in the tank are recovered. Its technical limitation is that the drum rotates to form a filter cake, and then washes, resulting in a high water content of the filter cake and poor regularity of the filter cake.

(3) A filter cloth cleaning device for vacuum filters and pressurized filters (patent number: 97223279.6). This cleaning technology is a conventional general technology, and its limitation is: after cleaning the filter cloth, it is impossible to ensure that each filter screen Whether the filter residue in the hole is cleaned up. affect the filtering effect.

Contents of the invention

In view of the above-mentioned limitations in the use of existing filters, the purpose of this utility model is to provide a continuous pressure filter integrating filtering, washing and drying.

The purpose of this utility model is achieved by the following technical solutions:

A continuous pressure filter integrating filtration, washing and drying, mainly composed of a body, a frame 9, a pressurizing unit, a control distribution head system, a drum, a filter unit room, a discharge mechanism, a filter cloth cleaning mechanism and a transmission system composition. The body is cylindrical, and the surface of the cylinder is equipped with a drum, a secondary cleaning water inlet, a pressurization unit, a pre-drying medium inlet, a filter cloth cleaning mechanism, a filtrate inlet, a primary cleaning water inlet, a filter unit room and a filtrate flow pipe; the product The outlet is located in the lower part of the body, which is equipped with a scraper system and a sight glass, and the filtrate flow pipe is located in the center of the cylinder, and the body is located between the bearing bracket I and the bearing bracket II; the bottom is equipped with a discharge mechanism and a leakage port; the transmission The system is connected with the speed change system, and the speed change system is connected with the control distribution head system and the body through the shaft; the control distribution head system is shaped like a disc, and the distribution control head gland, the secondary cleaning mother liquid water outlet, the pre-drying medium outlet, and the reverse Blowing gas inlet I, back blowing gas inlet II, back blowing gas inlet III, filtrate outlet, secondary cleaning mother liquor water outlet.

The utility model has the advantages of:

1. The model of the utility model is compact, and the control distribution head system, the speed change system, the transmission system and the drum of the pressure filter are installed in a pressure frame to adjust the speed and rotate. The structure is strong and the floor space is small. , pre-drying, and unloading functions are integrated, economical and practical, and overcome the limitations of existing filters in the process of use.

2. The utility model is widely used in the fields of isophthalic acid, PTA, aromatic acid, plastics and its pre-curing, paint and its resin pre-curing, food, dyes, pigments, cellulose derivatives, medicines, etc., for different substances Continuous pressure filtration of the filtrate provides a new set of equipment.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the end face of the body of Fig. 1 .

Fig. 3 is a schematic diagram of the end face of the control distribution head in Fig. 1 .

The reference signs are explained as follows:

1-Bearing bracket I 2-Body 3-Bearing bracket II 4-Control distribution head system 5-Variation system 6-Transmission system 7-Transmission motor 8-Protection cover 9-Frame 10-Unloading mechanism 11-Rack 12-Leakage Port 13-Drum 14-Secondary cleaning water inlet 15-Pressure unit 16-Predrying medium inlet 17-Scraper system 18-Sight mirror 19-Product outlet 20-Filter cloth cleaning mechanism 21-Filtrate inlet 22-Primary cleaning Water inlet 23-Filtration unit chamber 24-Filtrate flow pipe 25-Distribution control head gland 26-Secondary cleaning mother liquor water outlet 27-Pre-drying medium outlet 28-Back blowing gas inlet I 29-Back blowing gas inlet II 30-Back blowing gas inlet Blowing inlet III 31-Filtrate outlet 32-Secondary cleaning mother liquor water outlet

Detailed ways

As shown in Figure 1-2, a continuous pressure filter integrating filtration, washing and drying is mainly composed of a body 2, a frame 9, a pressurizing unit 15, a control distribution head system 4, a drum 13, and a filtering unit Chamber 23, unloading mechanism 10, filter cloth cleaning mechanism 20 and transmission system 6. The body 2 is cylindrical, and the surface of the cylinder is equipped with a drum 13, a secondary cleaning water inlet 14, a pressurizing unit 15, a pre-drying medium inlet 16, a filter cloth cleaning mechanism 20, a filtrate inlet 21, a primary cleaning water inlet 22, and a filter cloth cleaning mechanism. The unit chamber 23 and the filtrate flow pipe 24, the product outlet 19 are located in the lower half of the body 2, which is equipped with a scraper system 17 and a sight glass 18, the filtrate flow pipe 24 is located in the center of the cylinder, and the body 2 is also located on the bearing bracket Between I1 and bearing bracket II3, there is a discharge mechanism 10 and a leakage port 12 at the bottom; the transmission motor 7 is connected with the speed change system 5, and the speed change system 5 is connected with the control distribution head system 4 and the body 2 through a shaft, and the speed change system 5 is equipped with a protective The cover 8, the motor 7 and the body 2 are seated on the frame 11.

As shown in Figure 3, the distribution control head gland 25, the secondary cleaning mother liquor water outlet 26, the pre-drying medium outlet 27, the back blowing air inlet I28, the back blowing air inlet II29, the back blowing air Inlet III 30, filtrate outlet 31, secondary cleaning mother liquor water outlet 32.

Control the distribution head system 4, the speed change system 5, the transmission system 6 and the pressure filter drum 13 to rotate centripetally in a pressure frame 9 in a speed-regulating manner; the drum 13 and the frame 9 are sealed with packing, and the drum 13 is pressurized The unit 15 is divided into different airtight cavities. The surface of the drum 13 is composed of a filter unit chamber 23 connected with a filtrate flow pipe 24 and the control distribution head system 4. Under the pressurized state, the suspension continuously enters the filter unit chamber 23 , the filter cake is accumulated in the filter unit chamber 23, and is transported to the subsequent unit chamber with the rotation of the drum 13, and filtering, washing, and pre-drying can be completed in one or several units according to requirements, when the unit chamber 23 After the filter cake is completely filled, the cleaning water and the drying medium are respectively input from the primary cleaning water inlet 22, the secondary cleaning water inlet 14 and the pre-drying medium inlet 16, and the single-phase replacement fluid is ensured to pass through the filter cake. In the non-pressure unloading area, the filter cake is unloaded by the scraper system 17 of the unloading mechanism 10 and the back blowing gas of the control distribution head system 4 back blowing gas inlet I28 and back blowing gas inlet II29, and then the filter cloth is cleaned by the filter cloth The cleaning mechanism 20 and the back blowing gas of the back blowing gas inlet III30 on the control distribution head system 4 are cleaned and back blown respectively. According to the design, the filter cloth washing liquid can be reused as the filter cake washing liquid, so as to avoid the loss of solids in the filtered liquid. The mother liquor and washing liquor pass through the filter unit chamber 23 and the filtrate flow pipe 24 to the control distribution head system 4, where the different filtrates and backflush gas will be separated, discharged and recovered.

Claims (2)

1. A continuous pressure filter integrating filtration, washing and drying, mainly composed of a body (2), a frame (9), a pressurizing unit (15), a control distribution head system (4), a drum (13 ), the filter unit chamber (23), the unloading mechanism (10), the filter cloth cleaning mechanism (20) and the transmission system (6), which is characterized in that the body (2) is cylindrical, and the drum (13 ), secondary cleaning water inlet (14), pressurization unit (15), pre-drying medium inlet (16), filter cloth cleaning mechanism (20), filtrate inlet (21), primary cleaning water inlet (22), filter Unit chamber (23) and filtrate flow pipe (24); the product outlet (19) is located in the lower half of the body (2), which is provided with scraper system (17), sight glass (18), filtrate flow pipe (24) Located in the center of the barrel, the body (2) is located between the bearing bracket I (1) and the bearing bracket II (3), with a discharge mechanism (10) and a leakage port (12) at the bottom; the transmission system (6) and the transmission The system (5) is connected, and the speed change system (5) is connected with the control distribution head system (4) and the body (2) through a shaft. 2. A continuous pressure filter integrating filtering, washing and drying according to claim 1, characterized in that the above-mentioned control distribution head system (4) is shaped like a disc, and the circumference of the disc is provided with a distribution control head gland ( 25), secondary cleaning mother liquid water outlet (26), pre-drying medium outlet (27), backflush gas inlet I (28), backflush gas inlet II (29), backflush gas inlet III (30), filtrate Outlet (31), secondary cleaning mother liquor water outlet (32).

Images