Drying type sludge dewatering device

Abstract

The utility model belongs to the field of sludge dewatering, and discloses a drying type sludge dewatering device which comprises a supporting assembly used for supporting dewatering and collecting sludge, and a filter pressing assembly used for belt type filter pressing of the sludge is installed in the supporting assembly. The drying assembly is mounted above one side of the filter pressing assembly and is used for hot air drying at a filter pressing separation part; the drying assembly comprises a drying hopper, two air blowing structures are symmetrically arranged on the drying hopper front and back, an air guide grid plate is arranged in the drying hopper, and a plurality of heating pipes are evenly arranged below the air guide grid plate. According to the drying type sludge dewatering device disclosed by the utility model, the sludge subjected to filter pressing is heated and dried through heating and drying, so that the water content of the sludge is further reduced; through the arrangement of drying at a filter pressing separation part, the sludge is dried when the sludge is still paved on the filter pressing belt, so that the drying effect is improved; and through hot air drying, water vapor generated by drying is quickly blown away, and the drying effect is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sludge dewatering field, especially, relate to a drying type sludge dewatering device. BACKGROUND

[0002] The solid material separated or intercepted in the treatment process of domestic sewage and industrial wastewater is collectively referred to as sludge, sludge dewatering is a sludge treatment method that converts the flow state of raw, concentrated or digested sludge into semi-solid or solid sludge by removing water, after dewatering, the moisture content of sludge can be reduced to 55% to 80%, depending on the nature of the sludge and sediment and the efficiency of the dewatering equipment, the main methods of sludge dewatering include natural drying method, mechanical dewatering method and granulation method, the typical sludge dewatering process includes conditioning and stirring, thickening, distribution, dewatering, filter cloth cleaning and sludge cake removal, etc., and the equipment used mainly includes sludge dewatering machine (such as stacked screw sludge dewatering machine, horizontal screw centrifuge, belt filter press, plate and frame filter press, etc.), conditioning and stirring tank, thickening system, distribution device, cleaning device, etc.

[0003] The patent with the authorization announcement No. CN118290001A discloses a belt filter press, comprising a rack, an upper filter belt, a lower filter belt, a plurality of turning rollers, a plurality of first supporting rollers, a plurality of second supporting rollers, a plurality of extruding rollers and a pushing element, all the turning rollers, all the first supporting rollers, all the second supporting rollers and all the extruding rollers are parallel to each other, both ends of each turning roller, both ends of each first supporting roller and both ends of each second supporting roller are fixed to the rack, both ends of each extruding roller are movably installed on the rack, the upper filter belt is wound around the first supporting rollers, the second supporting rollers and some of the turning rollers, the lower filter belt is wound around the first supporting rollers, the second supporting rollers and the other turning rollers, the upper filter belt and the lower filter belt are tangent at each first supporting roller and each second supporting roller.

[0004] The above-mentioned patent uses a filter pressing method to dewater the sludge, and the sludge still contains a high amount of water after filter pressing. Therefore, a new device needs to be designed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a drying type sludge dewatering device to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A drying type sludge dewatering device, comprising a supporting assembly for supporting dewatering and collecting sludge, a filter pressing assembly for belt filter pressing sludge is installed in the supporting assembly, and a drying assembly for hot air drying at the filter pressing separation is installed above one side of the filter pressing assembly;

[0008] The drying assembly comprises a drying hopper, two air blowing structures are symmetrically arranged on the upper surface of the drying hopper, a wind guide grid plate is arranged in the drying hopper, and a plurality of heating pipes are uniformly arranged below the wind guide grid plate.

[0009] Further, the supporting assembly comprises a supporting frame, a cloth hopper is arranged on one side of the top of the supporting frame, a water collecting structure is arranged on one side below the cloth hopper, a sliding hopper is arranged on one side away from the cloth hopper of the water collecting structure, and a collecting box is arranged below the sliding hopper.

[0010] Further, the filter pressing assembly comprises a lower filter pressing belt, three lower supporting rollers are arranged on the inner side of the lower filter pressing belt, an upper filter pressing belt is arranged on the upper surface of the lower filter pressing belt, three upper supporting rollers are arranged on the inner side of the upper filter pressing belt, two corner rollers are arranged on the two sides of the overlapping position of the upper filter pressing belt and the lower filter pressing belt, three extrusion rollers are arranged between the two corner rollers, two driving rollers are arranged on one side of the two corner rollers, a second motor is mounted in front of the driving roller, and a scraper is arranged on one side of the driving roller.

[0011] Further, the air blowing structure comprises an air inlet pipe, a first motor is mounted in the air inlet pipe, a fan blade is mounted below the first motor, and a filter screen is arranged on the top of the air inlet pipe.

[0012] Further, the water collecting structure comprises a water collecting disc, and a water outlet pipe is arranged on the bottom of the water collecting disc.

[0013] Further, the two driving rollers are respectively arranged on the inner sides of the upper filter pressing belt and the lower filter pressing belt, and the overlapping part of the upper filter pressing belt and the lower filter pressing belt is S-shaped and wound between the three extrusion rollers.

[0014] Compared with the prior art, the beneficial effects are:

[0015] 1. The heating and drying structure is arranged to heat and dry the sludge after filter pressing, thereby further reducing the water content of the sludge.

[0016] 2. The drying structure is arranged at the filter pressing separation position, so that the sludge is dried while still being spread on the filter pressing belt, thereby improving the drying effect.

[0017] 3. The hot air drying structure is arranged to quickly blow away the water vapor generated during drying, thereby further improving the drying effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the drying type sludge dewatering device.

[0019] Figure 2 is an elevation view of the supporting assembly of the drying type sludge dewatering device.

[0020] Figure 3 is a drying assembly schematic view of the drying type sludge dewatering device of the utility model;

[0021] Figure 4 is a filter pressing assembly front view of the drying type sludge dewatering device of the utility model.

[0022] In the drawing marks: 101, support frame; 102, cloth hopper; 103, water collecting disc; 104, water outlet pipe; 105, slide hopper; 106, collection box; 201, drying hopper; 202, air inlet pipe; 203, first motor; 204, fan blade; 205, filter screen; 206, air guide grating; 207, heating pipe; 301, lower filter pressing belt; 302, lower support roller; 303, drive roller; 304, second motor; 305, upper filter pressing belt; 306, upper support roller; 307, extrusion roller; 308, scraper; 309, corner roller. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-4 A drying type sludge dewatering device, comprising a support assembly for supporting dewatering and collecting sludge, a filter pressing assembly for belt filter pressing sludge is installed in the support assembly, and a drying assembly for hot air drying at the filter pressing separation is installed on one side of the filter pressing assembly.

[0025] In the embodiment: the support assembly comprises a support frame 101, a cloth hopper 102 is arranged on one side of the top of the support frame 101, a water collecting structure is arranged on one side below the cloth hopper 102, a slide hopper 105 is arranged on the side away from the cloth hopper 102 of the water collecting structure, a collection box 106 is arranged below the slide hopper 105, the water collecting structure comprises a water collecting disc 103, the water collecting disc 103 is provided with a water outlet pipe 104 at the bottom, the sludge is poured into the cloth hopper 102 for cloth distribution under the support of the support frame 101, the water filtered out of the sludge falls into the water collecting disc 103 and is discharged from the water outlet pipe 104, and the dewatered sludge slides into the collection box 106 for collection through the slide hopper 105;

[0026] In the embodiment, the drying assembly comprises a drying hopper 201, two blow structures are symmetrically arranged on the upper surface of the drying hopper 201, a wind guide grid plate 206 is arranged in the drying hopper 201, a plurality of heating pipes 207 are uniformly arranged below the wind guide grid plate 206, the blow structure comprises an air inlet pipe 202, a first motor 203 is installed in the air inlet pipe 202, a fan blade 204 is installed below the first motor 203, a filter screen 205 is arranged on the top of the air inlet pipe 202, the upper heating pipe 207 heats the dewatered sludge, at the same time, the air inlet pipe 202 supports the first motor 203 to drive the fan blade 204 to rotate, air enters the air inlet pipe 202 through the filter screen 205 and is blown into the drying hopper 201, is guided by the wind guide grid plate 206 and is vertically blown to the dewatering belt 301, water vapor is quickly removed, and the drying effect is improved.

[0027] In the embodiment, the dewatering assembly comprises a lower dewatering belt 301, three lower supporting rollers 302 are arranged on the inner side of the lower dewatering belt 301, an upper dewatering belt 305 is arranged on the upper surface of the lower dewatering belt 301, three upper supporting rollers 306 are arranged on the inner side of the upper dewatering belt 305, two corner rollers 309 are arranged on the two sides of the overlapping position of the upper dewatering belt 305 and the lower dewatering belt 301, three extrusion rollers 307 are arranged between the two corner rollers 309, two drive rollers 303 are arranged on one side of the two corner rollers 309, a second motor 304 is installed in front of the drive roller 303, the two drive rollers 303 are respectively located on the inner sides of the upper dewatering belt 305 and the lower dewatering belt 301, and a scraper 308 is arranged on one side of the drive roller 303. The overlapping part of the upper dewatering belt 305 and the lower dewatering belt 301 is S-shaped and is wound between the three extrusion rollers 307, the upper second motor 304 drives the drive roller 303 to rotate, drives the upper dewatering belt 305 to rotate in a cycle under the support of the upper supporting roller 306, the lower second motor 304 drives the drive roller 303 to rotate, drives the lower dewatering belt 301 to rotate in a cycle under the support of the lower supporting roller 302, then the sludge falls on the lower dewatering belt 301 below the cloth hopper 102 in a uniform manner and is clamped between the upper dewatering belt 305 and the lower dewatering belt 301, then the lower dewatering belt 301 drives the sludge to pass through the three extrusion rollers 307 in sequence under the guidance of the corner roller 309 on the same side, the sludge is dewatered, after dewatering, the upper dewatering belt 305 and the lower dewatering belt 301 are separated at the other corner roller 309, at this time, the scraper 308 on the upper side scrapes the sludge adhered to the upper dewatering belt 305, so that the sludge falls on the lower dewatering belt 301 and is transported to the position of the collecting box 106 together with the lower dewatering belt 301, and finally the sludge is scraped off the lower dewatering belt 301 by the lower scraper 308 and falls into the collecting box 106 through the slide hopper 105.

[0028] Working principle: when in use, the second motor 304 at the upper part drives the driving roller 303 to rotate, and drives the upper pressing filter belt 305 to rotate circularly under the support of the upper support roller 306; the second motor 304 at the lower part drives the driving roller 303 to rotate, and drives the lower pressing filter belt 301 to rotate circularly under the support of the lower support roller 302; then the sludge is poured into the cloth hopper 102 under the support of the support frame 101, and is evenly dropped on the lower pressing filter belt 301 at the lower part, and is clamped between the upper pressing filter belt 305 and the lower pressing filter belt 301; then the lower pressing filter belt 301 drives the sludge to pass through the three squeezing rollers 307 in sequence under the guidance of the corner roller 309 at the left side, and the sludge is subjected to pressure filtration, and the water in the sludge is squeezed into the water collecting disc 103 and is discharged through the water outlet pipe 104; after pressure filtration, the upper pressing filter belt 305 and the lower pressing filter belt 301 are separated at the other corner roller 309; at this time, the scraper 308 at the upper part scrapes the sludge adhered on the upper pressing filter belt 305, and makes the sludge fall on the lower pressing filter belt 301, and is transported to the position of the collecting box 106 along with the lower pressing filter belt 301; in the process, the heating pipe 207 at the upper part heats and dries the sludge after pressure filtration; at the same time, the air inlet pipe 202 supports the first motor 203 to drive the fan blade 204 to rotate, so that the air enters the air inlet pipe 202 through the filter screen 205, and is blown into the drying hopper 201; after being guided by the air guide grating 206, the air is blown vertically to the lower pressing filter belt 301, and the water vapor is quickly taken away, and the drying effect is improved; after the sludge is dried, the sludge is scraped off the lower pressing filter belt 301 by the scraper 308 at the lower part, and falls into the collecting box 106 through the slide hopper 105.

[0029] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A drying type sludge dewatering apparatus comprising a support assembly for supporting dewatering and collecting sludge, a filter press assembly for filter pressing sludge by a belt being installed in the support assembly, characterized in that: The drying assembly is arranged on one side of the filter pressing assembly and is used for hot air drying at the filter pressing separation position. The drying assembly comprises a drying hopper (201), two blow structures are symmetrically arranged on the top of the drying hopper (201), and a wind guide grid plate (206) is arranged in the drying hopper (201).

2. A drying type sludge dewatering device according to claim 1, characterized in that: The supporting assembly comprises a supporting frame (101), a cloth hopper (102) is arranged on one side of the top of the supporting frame (101), a water collecting structure is arranged below the cloth hopper (102), a sliding hopper (105) is arranged on the side, away from the cloth hopper (102), of the water collecting structure, and a collecting box (106) is arranged below the sliding hopper (105).

3. A drying type sludge dewatering device according to claim 1, characterized in that: The filter pressing assembly comprises a lower filter pressing belt (301), three lower supporting rollers (302) are arranged on the inner side of the lower filter pressing belt (301), an upper filter pressing belt (305) is arranged on the upper surface of the lower filter pressing belt (301), three upper supporting rollers (306) are arranged on the inner side of the upper filter pressing belt (305), two corner rollers (309) are arranged on the two sides of the overlapping position of the upper filter pressing belt (305) and the lower filter pressing belt (301), three extrusion rollers (307) are arranged between the two corner rollers (309), two driving rollers (303) are arranged on one side of the two corner rollers (309), a second motor (304) is arranged in front of the driving roller (303), and a scraper (308) is arranged on one side of the driving roller (303).

4. A drying type sludge dewatering device according to claim 1, characterized in that: The blow structure comprises an air inlet pipe (202), a first motor (203) is arranged in the air inlet pipe (202), a fan blade (204) is arranged below the first motor (203), and a filter screen (205) is arranged on the top of the air inlet pipe (202).

5. A drying type sludge dewatering device according to claim 2, characterized in that: The water collecting structure comprises a water collecting disc (103), and a water outlet pipe (104) is arranged on the bottom of the water collecting disc (103).

6. A drying type sludge dewatering device according to claim 3, characterized in that: The two driving rollers (303) are respectively arranged on the inner sides of the upper filter pressing belt (305) and the lower filter pressing belt (301), and the overlapping part of the upper filter pressing belt (305) and the lower filter pressing belt (301) is S-shaped and wound between the three extrusion rollers (307).

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