Sludge heat drying equipment

Abstract

The utility model discloses sludge heat drying equipment which comprises a heat drying equipment box, an extrusion dewatering box is installed on the heat drying equipment box, a push plate is connected with one end of a hydraulic rod installed on the heat drying equipment box, and an electric control valve is installed at the opening end of the extrusion dewatering box. A first conveying belt, a second conveying belt and a third conveying belt are sequentially installed in the heat drying equipment box from top to bottom, a heat drying plate is installed at the position, located on the first conveying belt, in the heat drying equipment box, a scraper is installed in the heat drying equipment box, and the upper inclined end of the scraper is obliquely arranged and attached to the surface of the first conveying belt. According to the sludge heat drying device, the sludge is extruded, dewatered and diced, so that the heat drying of the sludge is more thorough and effective, and the phenomenon that the subsequent heat drying efficiency and effect of the sludge are influenced due to the fact that the sludge is easy to adhere to the conveying belt device is avoided through the scraper arranged in the heat drying equipment box.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related field of sludge heat drying equipment, concretely to a sludge heat drying equipment. BACKGROUND

[0002] With the development of urban construction, the improvement of living standards, the generation of urban domestic sludge is also more and more, and the long-term accumulation will affect the environment and air quality of the city, at present, the method of batch processing of urban domestic sludge is generally physical method and biochemical method, the physical method is generally heat drying treatment, that is, removing most of the water contained in the sludge, and then harmless treatment or conversion of the remaining residue, generally, sludge heat drying equipment will be used.

[0003] Through the search, the utility model discloses a kind of sludge heat drying equipment, including drying chamber, flexible baffle, hot air pipe, motor, ladder support frame, ladder bracket assembly, transmission assembly and heat pipe assembly;The utility model has simple structure, low cost, easy to manufacture, can be layered heat drying of sludge, and realizes the overall and local targeted heat drying treatment of sludge, greatly improves the sludge heat drying effect and efficiency, guarantees the full and thorough sludge heat drying.

[0004] The technical scheme in the application file still has the following defects: directly blowing hot air to dry the sludge, the hot air contacts the surface of the sludge, which can easily dry the surface of the sludge but keep the inside moist, and the heat drying efficiency and effect are poor, which makes the sludge heat drying not thorough and effective, and the sludge is sticky when containing moisture, which can easily adhere to the conveyor belt device, affecting the heat drying efficiency and effect of the sludge. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of sludge heat drying equipment to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a sludge heat drying equipment, including heat drying equipment box, extrusion dehydration tank, forming head, first conveyer belt, heating box, second conveyer belt and third conveyer belt, the extrusion dehydration tank is installed on heat drying equipment box, the push plate is installed in the extrusion dehydration tank, the push plate is connected with the one end of hydraulic rod installed on heat drying equipment box, the inner wall of extrusion dehydration tank is provided with filter membrane board, the outer layer of filter membrane board is provided with drainage cavity, the opening end of extrusion dehydration tank is installed with electric control valve, the first conveyer belt, second conveyer belt and third conveyer belt are installed in heat drying equipment box from top to bottom, the heat dry board is installed in heat drying equipment box at first conveyer belt, the heat dry board is provided with blowing hole, the scraper is installed in heat drying equipment box, the scraper is obliquely arranged, and the oblique end thereof is attached to the surface of first conveyer belt, and the second conveyer belt and third conveyer belt are same in structure with first conveyer belt.

[0007] The sludge enters the extrusion dehydration tank through the feed hopper, the hydraulic rod is started to extend, the push plate installed in the extrusion dehydration tank is driven to move, the sludge is extruded, the filter membrane board arranged on the inner wall of the extrusion dehydration tank is matched, the water in the sludge is discharged to the drainage cavity arranged on the outer layer of the filter membrane board, and then is discharged from the drain pipe, the sludge is first subjected to pressure filtration and dehydration, then the electric control valve is opened, the push plate driven by the hydraulic rod pushes the sludge after pressure filtration and dehydration to the forming head to cut and block, the sludge block after cutting and blocking falls on the first conveyer belt, the sludge is subjected to extrusion dehydration and cutting, the problem that the sludge surface is dried but the inside is moist after direct hot air blowing is avoided, the sludge heat drying is more complete and effective, the efficiency and effect of heat drying are improved, the hot air blown out of the blowing hole arranged on the heat dry board is matched, the hot air is used for heat drying operation on the sludge block on the first conveyer belt, when the first conveyer belt drives the sludge block to transport to one end, the scraper installed in the heat drying equipment box is matched, the oblique end of the scraper is attached to the surface of the first conveyer belt, the sludge block on the first conveyer belt can be scooped up, the scooped-up sludge block falls on the second conveyer belt to perform heat drying operation, and then falls on the third conveyer belt to perform heat drying operation, the sludge easily adhered to the conveyer belt can be scooped up, and the sludge easily adhered to the conveyer belt device is avoided to affect the heat drying efficiency and effect of the sludge.

[0008] Preferably, the opening end of the extrusion dehydration tank is externally installed with the forming head, the forming head is provided with the segmentation piece, the heat drying equipment box is installed with the telescopic rod, and the telescopic rod is installed with the slicing knife at one end.

[0009] According to the technical scheme, when the sludge filtered by the filter press is pushed to the forming head installed at the opening end of the extrusion dewatering tank, the sludge is divided into multiple rectangular strips through the division piece in the forming head, the extension rod installed on the heat drying equipment tank drives the slicing knife installed at one end of the extension rod to move up and down, and the side surface of the slicing knife is attached to the forming head, so that the multiple rectangular sludge is cut into small pieces, facilitating subsequent heat drying operation, making the heat drying of the sludge more thorough and effective, and improving the efficiency and effect of heat drying.

[0010] Preferably, a heating tank is installed on the heat drying equipment tank, a fan and an electric heating wire are installed in the heating tank, and an air pipe is installed on the heating tank and connected with the heat drying plate through a branch pipe.

[0011] According to the technical scheme, the fan and the electric heating wire installed in the heating tank on the heat drying equipment tank are started, the air blown by the fan becomes hot air through the electric heating wire, the hot air is transported to each group of heat drying plates through the air pipe installed on the heating tank and the branch pipe installed on the air pipe, and the hot air is sent to the three groups of conveying belts for heat drying operation.

[0012] Preferably, a feeding hopper is arranged on the heat drying equipment tank, the feeding hopper is connected with the extrusion dewatering tank, a drain pipe is installed on the extrusion dewatering tank and connected with a drain cavity at one end.

[0013] According to the technical scheme, the sludge is put into the feeding hopper on the heat drying equipment tank to enter the extrusion dewatering tank for filter pressing operation, and the water filtered from the sludge in the drain cavity is discharged through the drain pipe installed on the extrusion dewatering tank and connected with the sewage tank.

[0014] Preferably, a discharging window is arranged on the heat drying equipment tank, and an exhaust window is arranged on the heat drying equipment tank.

[0015] According to the technical scheme, the sludge block after heat drying is discharged through the discharging window arranged on the heat drying equipment tank.

[0016] Preferably, a baffle is installed in the heat drying equipment tank, the baffle is provided with two groups of baffles located on both sides of the conveying belt, the bottom of the baffle is attached to the surface of the conveying belt, and the first conveying belt comprises a servo motor, two groups of conveying rollers and a mesh conveying belt.

[0017] According to the technical scheme, the baffles installed on both sides of the conveying belt in the heat drying equipment tank can limit the sludge block, the first conveying belt drives one group of conveying rollers to rotate by starting the servo motor, so that the mesh conveying belt between the two groups of conveying rollers moves to transport the sludge, and the mesh on the mesh conveying belt is smaller than the size of the cut sludge block, facilitating the contact between the hot air and the sludge block.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] The sludge enters the extrusion dehydration tank through the feeding hopper, and the hydraulic rod is extended to drive the installed push plate in the extrusion dehydration tank to extrude the sludge, then the electric control valve is opened, and the hydraulic rod drives the push plate to push the sludge after pressure filtration dehydration to the forming head, and then cutting and blocking and heat drying operation are carried out, the extrusion dehydration operation and the cutting operation are carried out on the sludge, the problem that the sludge surface is easily dried but the inside is moist after direct hot air blowing drying is avoided, the heat drying of the sludge is more thorough and effective, and the heat drying efficiency and effect are improved.

[0020] The sludge block after cutting and blocking falls on the first conveying belt, and the hot air blown out through the air blowing hole arranged on the heat drying plate, the hot air performs heat drying operation on the sludge block on the first conveying belt, when the first conveying belt drives the sludge block to transport to one end, the scraper installed in the heat drying equipment tank can shovel up the sludge block on the first conveying belt, the shovelled up sludge block falls on the second conveying belt to perform heat drying operation, and then falls on the third conveying belt to perform heat drying operation, the sludge easily adhered to the conveying belt can be shovelled down, and the heat drying efficiency and effect of the sludge in the subsequent process are not affected by the sludge easily adhered to the conveying belt device. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0022] Figure 2 It is a sectional structure schematic view of the utility model;

[0023] Figure 3 It is a side end structure schematic view of the utility model;

[0024] Figure 4 It is a heat drying structure enlarged schematic view of the utility model.

[0025] In the drawing: 1, heat drying equipment tank; 2, feeding hopper; 3, extrusion dehydration tank; 4, push plate; 5, hydraulic rod; 6, filter membrane plate; 7, drainage cavity; 8, drainage pipe; 9, electric control valve; 10, forming head; 11, segmentation piece; 12, telescopic rod; 13, slicing knife; 14, exhaust window; 15, first conveying belt; 16, baffle; 17, scraper; 18, heating box; 19, fan; 20, electric heating wire; 21, air pipe; 22, heat drying plate; 23, air blowing hole; 24, second conveying belt; 25, third conveying belt; 26, discharging window. DETAILED DESCRIPTION

[0026] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments.

[0027] Please refer to Figures 1-4 The present application provides an embodiment: a sludge heat drying equipment, including heat drying equipment box 1, extrusion dehydration tank 3, forming head 10, first conveying belt 15, heating box 18, second conveying belt 24 and third conveying belt 25, the extrusion dehydration tank 3 is installed on the heat drying equipment box 1, the extrusion dehydration tank 3 is installed with push plate 4, the push plate 4 is connected with the one end of hydraulic rod 5 installed on the heat drying equipment box 1, the inner wall of the extrusion dehydration tank 3 is provided with filter membrane plate 6, the outer layer of the filter membrane plate 6 is provided with drainage cavity 7, the opening end of the extrusion dehydration tank 3 is installed with electric control valve 9, the heat drying equipment box 1 is sequentially installed with first conveying belt 15, second conveying belt 24 and third conveying belt 25 from top to bottom, the heat drying equipment box 1 is installed with heat drying plate 22 at first conveying belt 15, the heat drying plate 22 is provided with blowing hole 23, the heat drying equipment box 1 is installed with scraper 17, the scraper 17 is obliquely arranged, and the oblique end thereof is attached to the surface of first conveying belt 15, the second conveying belt 24 and the third conveying belt 25 are the same as the structure of the first conveying belt 15. The sludge enters the extrusion dehydration tank 3 through the feed hopper 2, the hydraulic rod 5 is started to extend, the push plate 4 installed in the extrusion dehydration tank 3 is driven to move, the sludge is extruded, the filter membrane plate 6 arranged on the inner wall of the extrusion dehydration tank 3 is matched, the water in the sludge is extruded and discharged to the drainage cavity 7 arranged on the outer layer of the filter membrane plate 6, and then discharged from the drain pipe 8. The sludge is first subjected to pressure filtration and dehydration, then the electric control valve 9 is opened, the push plate 4 driven by the hydraulic rod 5 pushes the sludge after pressure filtration and dehydration to the forming head 10, and cutting and blocking are carried out. The sludge block after cutting and blocking falls on the first conveying belt 15. Through the extrusion dehydration operation and cutting operation of the sludge, the problem that the sludge surface is easily dried but the inside is moist when directly blowing hot air to dry the sludge is avoided, the sludge heat drying is more complete and effective, the efficiency and effect of heat drying are improved, the hot air blown out of the blowing hole 23 arranged on the heat drying plate 22 is matched, the hot air is used for heat drying operation of the sludge block on the first conveying belt 15, when the first conveying belt 15 drives the sludge block to transport to one end, the scraper 17 installed in the heat drying equipment box 1, the upper inclined end of the scraper 17 is attached to the surface of the first conveying belt 15, the sludge block on the first conveying belt 15 can be scooped up, the scooped-up sludge block falls on the second conveying belt 24 along the inclination of the scraper 17 for heat drying operation, and then falls on the third conveying belt 25 for heat drying operation. The sludge easily adhered to the conveying belt can be scooped up, so that the sludge is not easily adhered to the conveying belt device, and the efficiency and effect of subsequent heat drying of the sludge are affected.

[0028] The opening end of the extrusion dewatering box 3 is externally provided with a forming head 10, the forming head 10 is provided with a segmentation piece 11, the heat drying equipment box 1 is externally provided with a telescopic rod 12, one end of the telescopic rod 12 is externally provided with a slicing knife 13. When the pressed sludge is pushed to the opening end of the extrusion dewatering box 3, the segmentation piece 11 provided in the forming head 10 can segment the sludge into multiple rectangular strips, the telescopic rod 12 externally provided on the heat drying equipment box 1 drives the slicing knife 13 externally provided on one end of the telescopic rod 12 to move up and down, and one side of the slicing knife 13 is attached to the forming head 10, so that the multiple rectangular sludge is cut into small pieces, which facilitates the subsequent heat drying operation, makes the heat drying of the sludge more thorough and effective, and improves the efficiency and effect of the heat drying.

[0029] The heat drying equipment box 1 is externally provided with a heating box 18, the heating box 18 is externally provided with a fan 19 and an electric heating wire 20, the heating box 18 is externally provided with an air pipe 21, and the air pipe 21 is connected with a heat drying plate 22 through a branch pipe. The fan 19 and the electric heating wire 20 externally provided in the heating box 18 are started, the air blown by the fan 19 becomes hot air after passing through the electric heating wire 20, the hot air is transported to each group of heat drying plates 22 through the air pipe 21 externally provided on the heating box 18 and the branch pipe externally provided on the air pipe 21, and the hot air is used for heat drying operation.

[0030] The heat drying equipment box 1 is externally provided with a feeding hopper 2, the feeding hopper 2 is connected with the extrusion dewatering box 3, the extrusion dewatering box 3 is externally provided with a drain pipe 8, and one end of the drain pipe 8 is connected with a drain cavity 7. The sludge is put into the feeding hopper 2 through the feeding hopper 2 externally provided on the heat drying equipment box 1, so that the sludge enters the extrusion dewatering box 3 to perform the pressure filtration operation, and the water filtered from the sludge in the drain cavity 7 is discharged through the drain pipe 8 externally provided on the extrusion dewatering box 3.

[0031] The heat drying equipment box 1 is externally provided with a discharging window 26, and the heat drying equipment box 1 is externally provided with an exhaust window 14. The sludge block after heat drying is discharged through the discharging window 26 externally provided on the heat drying equipment box 1.

[0032] The heat drying equipment box 1 is externally provided with a baffle 16, the baffle 16 is provided with two groups of baffles respectively located on both sides of the conveying belt, the bottom of the baffle 16 is attached to the surface of the conveying belt, and the first conveying belt 15 includes a servo motor, two groups of conveying rollers and a mesh conveying belt. The baffle 16 externally provided on both sides of the conveying belt in the heat drying equipment box 1 can limit the sludge block, the first conveying belt 15 drives one group of conveying rollers to rotate through the starting of the servo motor, so that the mesh conveying belt between the two groups of conveying rollers moves to transport the sludge, and the mesh on the mesh conveying belt is smaller than the size of the cut sludge block, which facilitates the contact between the hot air and the sludge block.

[0033] Working principle: Sludge first enters the extrusion dewatering chamber 3 through the feed hopper 2. The hydraulic rod 5 extends, driving the push plate 4 installed in the extrusion dewatering chamber 3 to move, thus extruding the sludge. Combined with the filter membrane plate 6 installed on the inner wall of the extrusion dewatering chamber 3, the water in the sludge is extruded and discharged into the drainage chamber 7 on the outer layer of the filter membrane plate 6, and then discharged through the drain pipe 8. The sludge is first dewatered by pressure filtration. Then, the electrically controlled valve 9 is opened, and the hydraulic rod 5 drives the push plate 4 to push the dewatered sludge towards the forming head 10. The dividing plate 11 in the middle will divide the sludge into multiple rectangular strips. The telescopic rod 12 installed on the thermal drying equipment box 1 will drive the slicing blade 13 installed at one end of the telescopic rod 12 to move up and down. One side of the slicing blade 13 is in contact with the forming head 10, thereby cutting the multiple rectangular strips of sludge into small pieces. The cut sludge pieces fall onto the first conveyor belt 15. Through the sludge extrusion dewatering and cutting operations, the problem of the sludge being dry on the surface but moist inside when directly dried with hot air is avoided. This makes the thermal drying of sludge more thorough and effective, improving the efficiency and effect of thermal drying. The fan 19 and electric heating wire 20 installed in the heating box 18 are activated. The air blown by the fan 19 is turned into hot air by the electric heating wire 20. The hot air is transported to each group of heat drying plates 22 through the air duct 21 installed on the heating box 18, in conjunction with the branch pipes installed on the air duct 21. The hot air is blown out from the air blowing holes 23 opened on the heat drying plates 22, and the hot air performs thermal drying on the sludge blocks on the first conveyor belt 15. The first conveyor belt 15 moves the sludge blocks... When transporting to one end, the scraper 17 installed in the heat drying equipment box 1 has its upper inclined end in contact with the surface of the first conveyor belt 15, which can scoop up the sludge blocks on the first conveyor belt 15. The scooped-up sludge blocks fall onto the second conveyor belt 24 for heat drying as the scraper 17 is inclined, and then fall onto the third conveyor belt 25 for heat drying. This can remove the sludge that is easy to stick to the conveyor belt, and avoid the sludge from easily sticking to the conveyor belt device and affecting the efficiency and effect of subsequent heat drying of the sludge.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sludge thermal drying plant comprising a thermal drying plant tank (1), characterized in that: The hot drying equipment box (1) is provided with an extrusion dehydration tank (3), the extrusion dehydration tank (3) is provided with a push plate (4), one end of the push plate (4) is connected with a hydraulic rod (5) installed on the hot drying equipment box (1), the inner wall of the extrusion dehydration tank (3) is provided with a filter membrane plate (6), the outer layer of the filter membrane plate (6) is provided with a drainage cavity (7), the opening end of the extrusion dehydration tank (3) is provided with an electric control valve (9), the hot drying equipment box (1) is sequentially provided from top to bottom with a first conveying belt (15), a second conveying belt (24) and a third conveying belt (25), the hot drying equipment box (1) is provided with a hot drying plate (22) at the first conveying belt (15), the hot drying plate (22) is provided with a blowing hole (23), the hot drying equipment box (1) is provided with a scraper (17), the scraper (17) is obliquely arranged, and the oblique end of the scraper (17) is attached to the surface of the first conveying belt (15), the second conveying belt (24) and the third conveying belt (25) are the same as the first conveying belt (15).

2. A thermal sludge drying apparatus as claimed in claim 1, wherein: The opening end of the extrusion dehydration tank (3) is provided with a forming head (10), the forming head (10) is provided with a segmentation piece (11), the hot drying equipment box (1) is provided with a telescopic rod (12), one end of the telescopic rod (12) is provided with a slicing knife (13).

3. A thermal sludge drying apparatus as claimed in claim 1, wherein: The hot drying equipment box (1) is provided with a heating box (18), the heating box (18) is provided with a fan (19) and an electric heating wire (20), the heating box (18) is provided with an air pipe (21), and the air pipe (21) is connected with the hot drying plate (22) through a branch pipe.

4. A thermal sludge drying apparatus as claimed in claim 1, wherein: The hot drying equipment box (1) is provided with a feeding hopper (2), the feeding hopper (2) is connected with the extrusion dehydration tank (3), the extrusion dehydration tank (3) is provided with a drainage pipe (8), one end of the drainage pipe (8) is connected with the drainage cavity (7).

5. A thermal sludge drying apparatus as claimed in claim 1, wherein: The hot drying equipment box (1) is provided with a discharging window (26), and the hot drying equipment box (1) is provided with an exhaust window (14).

6. A thermal sludge drying apparatus as claimed in claim 1, wherein: The hot drying equipment box (1) is provided with a baffle (16), the baffle (16) is provided with two groups of baffles located on both sides of the conveying belt, the bottom of the baffle (16) is attached to the surface of the conveying belt, and the first conveying belt (15) comprises a servo motor, two groups of conveying rollers and a mesh conveying belt.

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