A series connection type drying device for refractory material of incinerator

Abstract

This utility model discloses a series drying device for refractory materials in incinerators, belonging to the field of refractory material drying technology. It includes a horizontal sliding track, a conveyor box that can slide left and right along the horizontal sliding track and has an inner loading cylinder inside, a combustion chamber, a first drying chamber, and a second drying chamber distributed along the length of the horizontal sliding track. The combustion chamber, the first drying chamber, and the second drying chamber are connected in series via the horizontal sliding track. The conveyor box drives the inner loading cylinder to move sequentially between the chambers, allowing the refractory material to pass through a continuous processing system with different drying environments, improving the drying effect of the refractory material and achieving continuous and efficient processing of the refractory material from initial high-temperature drying to deep drying.

Description

Technical Field

[0001] This utility model relates to the field of refractory material drying technology, specifically to a series drying device for refractory materials used in incinerators. Background Technology

[0002] Refractory materials refer to a class of inorganic non-metallic materials with a refractoriness of not less than 1580℃. Because the raw materials inevitably absorb moisture during storage, which will affect subsequent processing, drying equipment is needed to dry the refractory materials.

[0003] In the production process of refractory materials for incinerators, the drying process is a key step to ensure product quality and performance. Refractory materials usually contain a certain amount of moisture after manufacturing. If they are not dried in a timely and effective manner, the moisture will rapidly vaporize and expand under high-temperature operating conditions, which will cause defects such as cracks and spalling inside the refractory material, seriously affecting its service life and stability.

[0004] Traditional refractory drying equipment often has some drawbacks. Some single-compartment drying equipment can only achieve drying in a single stage, making it difficult to accurately control the characteristics of refractory materials at different drying stages, resulting in low drying efficiency, long drying time, and high energy consumption. Although some multi-compartment drying equipment has multiple drying zones, there is a lack of efficient connection mechanism between the compartments. When materials are transferred between different compartments, stagnation and blockage are likely to occur, and the uniformity of materials throughout the drying process cannot be guaranteed, resulting in inconsistent product quality. Utility Model Content

[0005] To address the aforementioned problems, this utility model discloses a series drying device for refractory materials used in incinerators.

[0006] The technical solution of this utility model is: a series drying device for refractory materials for incinerators, including a horizontal sliding track, a conveying box that can slide left and right along the horizontal sliding track and has a loading inner cylinder inside, a combustion chamber distributed along the length direction of the horizontal sliding track, a first drying chamber and a second drying chamber, and a horizontal support frame connected to the bottom of the conveying box through a hydraulic cylinder, and the loading inner cylinder can be placed on the upper end of the horizontal support frame.

[0007] The combustion chamber is equipped with an igniter, a natural gas pipe, an air supply pipe, and a blower connected to the air supply pipe.

[0008] The first drying chamber is connected to the combustion chamber via an exhaust fan at its upper end. The second drying chamber is equipped with a snap-fit ​​rotating cover with an open bottom and several spiral dispersing tubes connected to it at its upper end. Each spiral dispersing tube has exhaust holes evenly distributed on its side wall. The free end of the spiral dispersing tube is equipped with a discharge valve. Several magnetic chucks are provided at the bottom opening of the snap-fit ​​rotating cover. The upper opening of the inner cylinder is equipped with snap-fit ​​grooves that correspond one-to-one with the magnetic chucks and have metal discs inside. An annular cover is provided around each spiral dispersing tube. A constant temperature heating plate is provided on the inner wall of the annular cover. The side wall of the snap-fit ​​rotating cover is driven to rotate by a first rotary motor.

[0009] Furthermore, the combustion chamber, the first drying chamber, and the second drying chamber are provided with liftable sealing doors on their left and right sides, and the sealing doors are provided with sealing strips on their sides.

[0010] Note: The liftable sealing door can be closed promptly after the conveyor box enters each compartment to prevent heat or gas leakage and ensure the airtightness of the working environment of each compartment. The side sealing strip further enhances the sealing effect, reduces energy loss, and prevents the exhaust gas generated during the drying process from leaking into the external environment, thereby improving the safety and environmental friendliness of the equipment operation.

[0011] Furthermore, the inner wall of the conveying box is provided with vertical locking grooves on the left and right sides, and the inner cylinder of the material loading is slidably connected to the vertical locking grooves on the left and right sides through sliding locking pins. The inner cylinder of the material loading is provided with a stirring rod, and the bottom end of the stirring rod is connected to a second rotary motor.

[0012] Note: The inner cylinder is slidably connected to the vertical locking groove of the conveyor box via a sliding locking post, which facilitates the installation, disassembly and maintenance of the inner cylinder. The stirring rod inside the inner cylinder rotates under the drive of the second rotary motor, which can stir the refractory material inside, making it heat more evenly, improving drying efficiency and drying quality, and avoiding insufficient drying in some areas.

[0013] Furthermore, each of the combustion chamber, the first drying chamber, and the second drying chamber is equipped with an exhaust branch pipe, and each of the exhaust branch pipes is connected to an air extraction pump through the exhaust main pipe. The air extraction pump is connected to an exhaust gas treatment box.

[0014] Note: The exhaust branch pipes installed in each compartment, together with the exhaust main pipe and the air pump, can promptly extract the exhaust gas generated during combustion and drying, preventing the exhaust gas from accumulating in the compartment and affecting the drying effect or causing safety hazards. The exhaust gas is drawn to the exhaust gas treatment box for treatment before being discharged, which can effectively remove harmful substances in the exhaust gas, reduce environmental pollution, and meet environmental protection requirements.

[0015] Furthermore, the inner wall of the spiral dispersion tube is coated with polytetrafluoroethylene.

[0016] Note: The polytetrafluoroethylene coating has the characteristics of high temperature resistance and non-stick properties. When coated on the inner wall of the spiral dispersion tube, it can prevent refractory materials from sticking to the tube wall during transportation and dispersion, ensuring smooth material transportation, reducing material loss, and improving the corrosion resistance and wear resistance of the spiral dispersion tube.

[0017] The beneficial effects of this utility model are:

[0018] This utility model discloses a series-connected drying device for refractory materials used in incinerators. In operation, a combustion chamber, a first drying chamber, and a second drying chamber are connected in series via a horizontal sliding track. A conveyor box drives the inner cylinder of the material to move sequentially between the chambers, allowing the refractory material to pass through a continuous processing system with different drying environments. This improves the drying effect of the refractory material and achieves continuous and efficient processing from initial high-temperature drying to deep drying. Specifically, the combustion chamber utilizes a mixture of natural gas and combustion air to generate a high-temperature hot airflow for initial and rapid drying of the refractory material, removing a large amount of free moisture. The first drying chamber, aided by the hot airflow generated in the combustion chamber and combined with stirring rods, ensures uniform heating of the material and evaporates surface moisture. The second drying chamber, through a connecting rotating cover, a spiral dispersion tube, and a constant-temperature heating plate, disperses and performs constant-temperature deep drying of the material. Each chamber is precisely controlled according to the characteristics of different drying stages of the material, ensuring drying quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is the utility model Figure 1 Enlarged view of point A in the image;

[0021] Figure 3 This is a side view of the combustion chamber of this utility model;

[0022] Figure 4 This is a schematic diagram of the installation structure of the spiral dispersion tube of this utility model on the snap-fit ​​flip cover;

[0023] Figure 5 This is a schematic diagram of the connection structure between the conveyor box and the inner loading cylinder of this utility model.

[0024] Among them, 1-horizontal sliding track, 10-sealed door, 2-conveying box, 20-inner filling cylinder, 200-sliding snap-fit ​​column, 201-stirring rod, 202-second rotary motor, 21-fastening groove, 210-metal disc, 22-vertical snap-fit ​​groove, 23-hydraulic cylinder, 24-horizontal support frame, 3-combustion chamber, 30-igniter, 31-natural gas pipe, 32-air conveying pipe, 33-blower, 4-first drying chamber, 40-exhaust fan, 5-second drying chamber, 50-spiral dispersion pipe, 500-exhaust port, 501-discharge valve, 502-ring cover, 503-constant temperature heating plate, 504-PTFE coating, 51-fastening flip cover, 510-magnetic chuck, 511-first rotary motor, 60-exhaust branch pipe, 61-exhaust main pipe, 62-air pump, 63-waste gas treatment box. Detailed Implementation

[0025] Example 1: As Figure 1 As shown, a series drying device for refractory materials in an incinerator includes a horizontal sliding track 1, a conveying box 2 that can slide left and right along the horizontal sliding track 1 and has a loading inner cylinder 20 inside, a combustion chamber 3, a first drying chamber 4, and a second drying chamber 5 distributed along the length of the horizontal sliding track 1. The bottom of the conveying box 2 is connected to a horizontal support frame 24 through a hydraulic cylinder 23. The loading inner cylinder 20 can be placed on the upper end of the horizontal support frame 24. The conveying box 2 is driven to slide left and right along the horizontal sliding track 1 by an external drive device. For example, a discrete dual-motor drive high-friction belt can be used. The belt contacts the conveying box 2, and the rotation of the belt drives the conveying box 2 to move. This drive method can achieve smooth and uniform conveying and is often used in occasions where the conveying stability is required.

[0026] The combustion chamber 3 is equipped with an igniter 30, a natural gas pipe 31, an air supply pipe 32, and a blower 33 connected to the air supply pipe 32. The igniter 30 and the blower 33 both adopt existing technologies. For example, the igniter 30 can be a CGD-22-I / II type high-energy igniter, and the blower 33 can be a WX-FB322 series micro blower.

[0027] like Figure 2As shown, the upper end of the first drying chamber 4 is connected to the combustion chamber 3 via an exhaust fan 40. The second drying chamber 5 is equipped with a snap-fit ​​rotating cover 51 with an open bottom and three spiral dispersion tubes 50 connected to it at the top. Each spiral dispersion tube 50 has evenly distributed exhaust holes 500 on its sidewall. A discharge valve 501 is located at the free end of each spiral dispersion tube 50. Four magnetic suction cups 510 are located at the bottom opening of the snap-fit ​​rotating cover 51. The upper opening of the inner loading cylinder 20 has snap-fit ​​grooves 21 corresponding to the magnetic suction cups 510 and containing metal discs 210. An annular cover 502 is located around each spiral dispersion tube 50. 2. The inner wall is provided with a constant temperature heating plate 503. The side wall of the snap-on flip cover 51 is driven to rotate by the first rotary motor 511. The exhaust fan 40, the discharge valve 501, the magnetic chuck 510, the constant temperature heating plate 503 and the first rotary motor 511 all adopt existing technologies. For example, the exhaust fan 40 can be a 4-72 type centrifugal fan, the discharge valve 501 can be a D941X type electric butterfly valve, the magnetic chuck 510 can be a PTM3040 discharge valve, the constant temperature heating plate 503 can be an ET-200 type constant temperature heating plate, and the first rotary motor 511 can be a Y2-200L-4 rotary motor.

[0028] like Figure 3 As shown, the combustion chamber 3, the first drying chamber 4, and the second drying chamber 5 are provided with liftable sealing doors 10 on their left and right sides. The sealing doors 10 are equipped with sealing strips on their sides. The liftable sealing doors 10 can be closed in time after the conveyor box 2 enters each chamber to prevent heat or gas from leaking out of the chamber and ensure the airtightness of the working environment of each chamber. The sealing strips on the sides further enhance the sealing effect, reduce energy loss, and prevent the exhaust gas generated during the drying process from leaking into the external environment, thereby improving the safety and environmental protection of the equipment. The liftable sealing doors 10 adopt existing technologies, such as steel drop-type airtight doors.

[0029] like Figure 5 As shown, vertical locking grooves 22 are provided on the left and right sides of the inner wall of the conveying box 2. The left and right sides of the inner cylinder 20 are slidably connected to the vertical locking grooves 22 via sliding locking pins 200. The inner cylinder 20 is provided with a stirring rod 201. The bottom end of the stirring rod 201 is connected to a second rotary motor 202. The inner cylinder 20 is slidably connected to the vertical locking grooves 22 of the conveying box 2 via sliding locking pins 200, which facilitates the installation, disassembly and maintenance of the inner cylinder 20. The stirring rod 201 in the inner cylinder 20 rotates under the drive of the second rotary motor 202, which can stir the refractory material inside, making it more evenly heated, improving drying efficiency and drying quality, and avoiding insufficient drying in some areas. The second rotary motor 202 can be a Y2-200L-4 rotary motor.

[0030] Each of the combustion chamber 3, the first drying chamber 4, and the second drying chamber 5 is equipped with an exhaust branch pipe 60. Each exhaust branch pipe 60 is connected to a suction pump 62 via an exhaust main pipe 61. The suction pump 62 is connected to a waste gas treatment box 63. The exhaust branch pipes 60 in each chamber, in conjunction with the exhaust main pipe 61 and the suction pump 62, can promptly extract the waste gas generated during combustion and drying, preventing the waste gas from accumulating in the chamber and affecting the drying effect or causing safety hazards. The waste gas is extracted to the waste gas treatment box 63 for treatment before being discharged, which can effectively remove harmful substances in the waste gas and reduce emissions. The environmental pollution is in compliance with environmental protection requirements. The air pump 62 adopts existing technology, such as the VP-10L model air pump. The exhaust gas treatment box 63 is equipped with a cyclone separator, a bag filter and an activated carbon adsorption plate. The cyclone separator, bag filter and activated carbon adsorption plate adopt existing technology. The cyclone separator adopts the CLK-300 model cyclone separator, the bag filter adopts the DFC-6 model bag filter and the activated carbon adsorption plate adopts the HXT-500 model activated carbon adsorption plate.

[0031] like Figure 4 As shown, the inner wall of the spiral dispersion tube 50 is coated with polytetrafluoroethylene (PTFE) 504. PTFE 504 has the characteristics of high temperature resistance and non-stick properties. When coated on the inner wall of the spiral dispersion tube 50, it can prevent refractory materials from sticking to the tube wall during transportation and dispersion, ensuring smooth material transportation, reducing material loss, and improving the corrosion resistance and wear resistance of the spiral dispersion tube 50.

[0032] The tandem drying equipment for refractory materials in incinerators of this utility model includes the following steps during use:

[0033] S1. First, the inner cylinder 20 is slidably connected to the vertical locking groove 22 on the inner wall of the conveying box 2 through the sliding locking pins 200 on both sides, so that the inner cylinder 20 is stably placed on the horizontal support frame 24 at the bottom of the conveying box 2. Then, the refractory material for the incinerator to be dried is loaded into the inner cylinder 20 to complete the material loading.

[0034] S2. Control the conveyor box 2 through the external drive mechanism to move it along the horizontal sliding track 1 to the initial position (usually at the entrance of the combustion chamber 3) and wait to enter the combustion chamber 3;

[0035] S3. When the conveyor box 2 enters the combustion chamber 3, the liftable sealing doors 10 on both sides of the combustion chamber 3 are closed, and the side sealing strips ensure the chamber is sealed. Then, the natural gas pipe 31 delivers natural gas, and the air delivery pipe 32 delivers combustion air under the action of the blower 33. After the two are mixed, they are ignited by the igniter 30 to generate a high-temperature hot airflow, which performs preliminary high-temperature drying on the refractory material and quickly removes most of the free moisture in the material.

[0036] S4. Raise the sealing door 10 at the outlet of the combustion chamber 3, and move the conveyor box 2 along the horizontal sliding track 1 into the first drying chamber 4. Then, close the sealing doors 10 on both sides of the first drying chamber 4 to maintain a sealed environment inside the chamber. The high-temperature hot airflow generated in the combustion chamber 3 is drawn into the first drying chamber 4 by the negative pressure of the exhaust fan 40 at the top of the first drying chamber 4 and diffuses. The heat is transferred to the internal refractory material through heat conduction. At the same time, start the second rotary motor 202 at the bottom of the inner cylinder 20 to drive the stirring rod 201 to rotate and stir the refractory material, so that the material is heated evenly and the surface moisture is quickly removed.

[0037] S5. After the first drying chamber 4 is preheated and dried, its outlet side sealing door 10 is raised, and the conveyor box 2 moves along the horizontal sliding track 1 to the second drying chamber 5. Then the sealing doors 10 on both sides of the second drying chamber 5 are closed. At this time, the horizontal support frame 24 and the inner loading cylinder 20 are driven to move upward by the hydraulic cylinder 23 until the magnetic suction cup 510 at the bottom of the snap-on flip cover 51 falls into the corresponding snap-on groove 21, so as to achieve the sealing docking of the snap-on flip cover 51 and the inner loading cylinder 20.

[0038] S6. Start the first rotary motor 511, drive the snap-fit ​​tilting cover 51 to drive the inner cylinder 20 to tilt synchronously. The refractory material in the inner cylinder 20 is poured into the inside of the snap-fit ​​tilting cover 51 under the action of gravity, and further dispersed into several spiral dispersion tubes 50. During the process of conveying the refractory material along the spiral dispersion tubes 50, the constant temperature heating plate 503 on the inner wall of the annular cover 502 of the spiral dispersion tube 50 is started. The material in the spiral dispersion tube 50 is heated at a constant temperature through heat conduction. At the same time, the exhaust hole 500 on the side wall of the spiral dispersion tube 50 can discharge the residual moisture vapor in the material to achieve deep drying of the material.

[0039] S7. When the material is conveyed to the free end along the spiral dispersion tube 50, open the discharge valve 501. The deeply dried refractory material is discharged from the spiral dispersion tube 50. Open the sealing door 10 at the second drying chamber 5 and temporarily store it with external receiving equipment to complete the entire drying process.

[0040] The exhaust gases generated by S8, combustion chamber 3, first drying chamber 4, and second drying chamber 5 are collected by exhaust branch pipe 60 and then sent to exhaust main pipe 61 under the negative pressure of exhaust pump 62, and finally pumped to exhaust gas treatment box 63. The exhaust gas treatment box 63 removes harmful substances from the exhaust gas through filtration and adsorption, and the treated gas that meets the standards is then discharged to the outside.

Claims

1. A series drying device for refractory materials in an incinerator, characterized in that, It includes a horizontal sliding track (1), a conveying box (2) that can slide left and right along the horizontal sliding track (1) and has a loading inner cylinder (20) inside, a combustion chamber (3) distributed along the length direction of the horizontal sliding track (1), a first drying chamber (4) and a second drying chamber (5). The bottom of the conveying box (2) is connected to a horizontal support frame (24) through a hydraulic cylinder (23). The loading inner cylinder (20) can be placed on the upper end of the horizontal support frame (24). The combustion chamber (3) is equipped with an igniter (30), a natural gas pipe (31), an air supply pipe (32), and a blower (33) connected to the air supply pipe (32); The upper end of the first drying chamber (4) is connected to the combustion chamber (3) via a blower (40). The second drying chamber (5) is equipped with a snap-on flip cover (51) with an open bottom and several spiral dispersion tubes (50) connected through the upper end. Each spiral dispersion tube (50) has a uniform exhaust hole (500) on its side wall. The free end of the spiral dispersion tube (50) is equipped with a discharge valve (501). Several magnetic chucks (510) are provided at the bottom opening of the snap-on flip cover (51). The upper opening of the inner cylinder (20) is equipped with a snap-on groove (21) that corresponds one-to-one with the magnetic chucks (510) and has a metal disc (210) inside. An annular cover (502) is provided around each spiral dispersion tube (50). A constant temperature heating plate (503) is provided on the inner wall of the annular cover (502). The side wall of the snap-on flip cover (51) is driven to rotate by a first rotary motor (511).

2. The tandem drying equipment for refractory materials in an incinerator according to claim 1, characterized in that, The combustion chamber (3), the first drying chamber (4) and the second drying chamber (5) are provided with liftable sealing doors (10) on the left and right sides, and the sealing doors (10) are provided with sealing strips on the sides.

3. The tandem drying equipment for refractory materials in an incinerator according to claim 1, characterized in that, The conveying box (2) has vertical locking grooves (22) on the left and right sides of its inner wall. The loading inner cylinder (20) is slidably connected to the vertical locking grooves (22) on the left and right sides through sliding locking pins (200). The loading inner cylinder (20) is equipped with a stirring rod (201), and the bottom end of the stirring rod (201) is connected to a second rotary motor (202).

4. The tandem drying equipment for refractory materials in an incinerator according to claim 1, characterized in that, The combustion chamber (3), the first drying chamber (4) and the second drying chamber (5) are each equipped with an exhaust branch pipe (60), and each of the exhaust branch pipes (60) is connected to an air extraction pump (62) through an exhaust main pipe (61). The air extraction pump (62) is connected to an exhaust gas treatment box (63).

5. A series drying device for refractory materials in an incinerator according to claim 1, characterized in that, The inner wall of the spiral dispersion tube (50) is coated with polytetrafluoroethylene (504).

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