A rotary kiln capable of automatic ash discharging

Abstract

The utility model discloses a rotary kiln can automatic unloading ash, including kiln head cover, mounting support, unloading ash hopper, valve plate and driving arrangement, kiln head cover sets up at the kiln head department of rotary kiln cylinder, and the lower extreme of kiln head cover is equipped with an unloading ash mouth, and mounting support sets up at the lower extreme of unloading ash mouth, and the upper end wall and the lower end wall of both sides of mounting support are fixedly connected with the lower end wall of unloading ash mouth and the upper end wall of unloading ash hopper respectively, and valve plate can be set up in mounting support and slide back and forth, and both sides of valve plate are slidably connected with mounting support respectively, and the lower end wall of unloading ash mouth and valve plate slide and abut, and through valve plate closes or opens unloading ash mouth, and driving arrangement sets up on mounting support, and driving arrangement is connected with valve plate. The technical scheme of the utility model can realize the automatic opening unloading ash and automatic closing of valve plate, reduces manual operation, effectively improves unloading ash hopper unloading ash operation environment, significantly reduces manual operation risk, and prevents the security hidden danger of manual operation unloading ash.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, and in particular to a rotary kiln with automatic ash discharge capability. Background Technology

[0002] Rotary kilns are commonly used in cement clinker production in the building materials industry, ore pretreatment in the metallurgical industry, and solid waste and hazardous waste incineration in the environmental protection field. Because they are suitable for the mixed treatment of solid, semi-solid, and liquid waste, their application in the environmental protection field is becoming increasingly widespread. The kiln head hood is an intermediate device in the rotary kiln system connecting the kiln head end with downstream process equipment, forming a cooling zone and an outer kiln hopper structure. Its main functions include supporting the burner installation, providing a space for observation and operation, and structurally including observation holes, maintenance doors, and material passages for the cooling zone. During production operation, it concentrates the clinker temperature and prevents clinker overflow. The kiln head hood, together with the rotary kiln shell, kiln tail flue, and drive unit, constitutes a complete piece of equipment.

[0003] In hazardous waste incineration, based on the reaction stages within the kiln, the rotary kiln can be divided into four zones from the ash discharge hopper to the kiln tail: drying zone, combustion zone, burnout zone, and slag discharge zone. The rotary kiln ash discharge hopper is the initial zone for handling incinerated materials. Compared to the middle and later sections, the temperature in the ash discharge hopper is relatively low, resulting in low material combustion efficiency and the formation of material belts. During continuous feeding, material accumulation is likely, leading to increased wear between the kiln head hood and the rotary kiln cylinder. Therefore, incompletely burned materials and some ash need to be discharged through the ash discharge device at the bottom of the kiln head hood to maintain good operating conditions.

[0004] Currently, most rotary kilns use manual operation to open valves for ash discharge, which is labor-intensive. The ash is hot during discharge, emits VOC odor, and creates a harsh operating environment. When the operating conditions are unstable and an explosion occurs inside the kiln, the ash can easily burn the operators, posing a safety hazard. Utility Model Content

[0005] The main objective of this invention is to propose an automatic ash-discharging rotary kiln for hazardous waste treatment, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model proposes an automatic ash-discharging rotary kiln, comprising a kiln head hood, a mounting bracket, an ash-discharging hopper, a valve plate, and a drive device. The kiln head hood is located at the kiln head end of the rotary kiln body, and an ash-discharging port is provided at the lower end of the kiln head hood. The outer contours of the ash-discharging port, the mounting bracket, and the upper opening of the ash-discharging hopper are all rectangular. The mounting bracket is located at the lower end of the ash-discharging port, and the ash-discharging hopper is located directly below the ash-discharging port. The mounting bracket is positioned between the ash-discharging port and the ash-discharging hopper. The upper and lower walls on both sides of the mounting bracket are fixedly connected to the lower wall of the ash discharge port and the upper wall of the ash discharge hopper, respectively. The valve plate is slidably disposed in the mounting bracket, with both sides of the valve plate slidably connected to the mounting bracket. The valve plate slidably abuts against the lower wall of the ash discharge port, thereby closing or opening the ash discharge port. The driving device is disposed on the mounting bracket and connected to the valve plate, thereby driving the valve plate to close or open the ash discharge port. Optionally, the driving device includes a motor, a reducer, a drive screw, and a nut. The motor is located at the rear end of the mounting bracket, the reducer is located at the lower end of the motor, the input shaft of the reducer is connected to the output shaft of the motor, the drive screw is located at the lower end of the valve plate, the rear end of the drive screw is connected to the output shaft of the reducer, the nut is threadedly connected to the drive screw, and the nut is fixedly connected to the rear end of the valve plate.

[0007] Optionally, it also includes limit switches, which are respectively disposed at both ends of the upper end of the mounting bracket. A limit trigger rod is protruding from the upper end wall of the rear end of the valve plate. The limit trigger rod can abut against the limit switch. The limit switch is electrically connected to the motor.

[0008] Optionally, four limit switches are provided, which are respectively located on both sides of the upper end of the mounting bracket. A limit trigger rod is protruding from both sides of the upper end wall of the rear end of the valve plate, and the limit trigger rod can abut against the limit switch respectively.

[0009] Optionally, it also includes an electrical control box, which is electrically connected to the motor, and the electrical control box is equipped with an automatic ash discharge button, a stop button, a manual ash discharge button, and a manual shut-off button.

[0010] Optionally, the device also includes rollers, which are rotatably mounted on the inner sidewall of the mounting bracket, and the lower sidewalls of the valve plate abut against the rollers. Optionally, the inner wall of the mounting bracket is recessed along the length direction with a limiting groove adapted to the valve plate, and the two sides of the valve plate are slidably embedded in the limiting groove.

[0011] Optionally, the mounting bracket also includes a slide rail and a slider. The slide rail is disposed on the two inner side walls of the mounting bracket, and the slider is slidably disposed on the slide rail. The slider is fixedly connected to the lower end wall of the valve plate.

[0012] The technical solution of this utility model has the following beneficial effects: The technical solution of this utility model has an ash discharge port at the lower end of the ash discharge hopper, and a valve plate that can close the ash discharge port. The driving device is set on the outer peripheral wall of the ash discharge hopper and is connected to the valve plate. The driving device drives the valve plate to close or open the ash discharge port, thereby realizing the automatic opening and closing of the valve plate for ash discharge, reducing manual operation, effectively improving the ash discharge working environment of the ash discharge hopper, significantly reducing the risk of manual operation, and eliminating the safety hazards of manual ash discharge. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0014] Figure 1 This is a partial structural diagram of a rotary kiln with automatic ash discharge according to Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of another part of the structure of a rotary kiln with automatic ash discharge according to Embodiment 1 of this utility model.

[0015] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0018] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0019] This utility model proposes a rotary kiln with automatic ash discharge.

[0020] Example 1 like Figure 1 and Figure 2 As shown, in this embodiment, the rotary kiln with automatic ash discharge includes a kiln head cover 101, a mounting bracket 102, an ash discharge hopper 103, a valve plate 104, and a drive device 200. The kiln head cover 101 is located at the kiln head end of the rotary kiln body. An ash discharge port 1011 is provided at the lower end of the kiln head cover 101. The outer contours of the upper openings of the ash discharge port 1011, the mounting bracket 102, and the ash discharge hopper 103 are all rectangular. The mounting bracket 102 is located at the lower end of the ash discharge port 1011, and the ash discharge hopper 103 is located directly below the ash discharge port 1011. The mounting bracket 102 is positioned between the ash discharge port 1011 and the ash discharge hopper 103. Between 3, the upper and lower end walls of the mounting bracket 102 on both sides are fixedly connected to the lower end wall of the ash discharge port 1011 and the upper end wall of the ash discharge hopper 103, respectively. The valve plate 104 is slidably disposed in the mounting bracket 102. The two sides of the valve plate 104 are slidably connected to the mounting bracket 102, and the valve plate 104 slidably abuts against the lower end wall of the ash discharge port 1011. The ash discharge port 1011 is closed or opened by the valve plate 104. The driving device 200 is disposed on the mounting bracket 102 and connected to the valve plate 104. The driving device 200 drives the valve plate 104 to close or open the ash discharge port 1011. Specifically, the drive device 200 includes a motor 201, a reducer 202, a drive screw 203, and a nut 204. The motor 201 is located at the rear end of the mounting bracket 102, the reducer 202 is located at the lower end of the motor 201, and the input shaft of the reducer 202 is connected to the output shaft of the motor 201. The drive screw is located at the lower end of the valve plate, and the rear end of the drive screw 203 is connected to the output shaft of the reducer 202. The nut 204 is threadedly connected to the drive screw 203 and fixedly connected to the rear end of the valve plate 104. By driving the valve plate with the motor, the valve plate can be automatically opened to discharge ash and automatically closed, reducing manual operation, significantly reducing labor intensity and operational risks, and effectively improving the working environment.

[0021] Specifically, it also includes limit switches 205, which are respectively set at both ends of the upper end of the mounting bracket 102. A limit trigger rod 1041 is protruding from the upper end wall of the rear end of the valve plate 104. The limit trigger rod 1041 can abut against the limit switch 205. The limit switch 205 is electrically connected to the motor 201. When the valve plate moves, when the limit trigger rod triggers the limit switch, it indicates that the valve plate is fully open or fully closed.

[0022] Specifically, four limit switches 205 are provided. The limit switches 205 are respectively located on both sides of the upper end of the mounting bracket 102. A limit trigger rod 1041 is protruding from both sides of the upper end wall of the rear end of the valve plate 104. The limit trigger rod 1041 can abut against the limit switch 205 respectively, so as to prevent the valve plate from being unable to limit when one of the limit switches fails, thus playing a double insurance role.

[0023] Specifically, it also includes an electrical control box 206, which is electrically connected to the motor 201. The electrical control box 206 is equipped with an automatic ash discharge button 2061, a stop button 2062, a manual ash discharge button 2063, and a manual shut-off button 2064, which can realize manual and automatic ash discharge functions.

[0024] Specifically, it also includes rollers (not shown), which are rotatably mounted on the inner side wall of the mounting bracket 102. The lower side walls of the valve plate 104 abut against the rollers, and the rollers support the valve plate. The valve plate is slidably connected to the mounting bracket through the rollers. Example 2 The difference between this embodiment and Embodiment 1 is that: The inner sidewall of the mounting bracket 102 is recessed along the length direction with a limiting groove (not shown) that is adapted to the valve plate 104. Both sides of the valve plate 104 are slidably embedded in the limiting groove, which plays a role in limiting and guiding the valve plate.

[0025] Example 3 The difference between this embodiment and Embodiment 1 is that: It also includes a slide rail (not shown) and a slider (not shown). The slide rail is set on the two inner side walls of the mounting bracket 102, and the slider is slidably set on the slide rail. The slider is fixedly connected to the lower end wall of the valve plate 104 and plays a guiding role for the valve plate, so that the valve plate slides more smoothly.

[0026] Example 4 The difference between this embodiment and Embodiment 1 is that: The drive device 200 includes a hydraulic cylinder (not shown), which is located at the rear end of the mounting bracket 102. The front end of the piston rod of the hydraulic cylinder is fixedly connected to the rear end of the valve plate 104, so that the valve plate can be driven by the hydraulic cylinder to realize the functions of automatically opening and unloading ash and automatically closing the valve plate.

[0027] Specifically, the working principle of this utility model is as follows: The valve plate is driven by a drive device to close or open the ash discharge port, thereby realizing the automatic opening and closing of the valve plate for ash discharge, reducing manual operation, effectively improving the ash discharge working environment of the ash discharge hopper, significantly reducing the risk of manual operation, and eliminating the safety hazards of manual ash discharge.

[0028] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A rotary kiln with automatic ash discharge, characterized in that, The system includes a kiln head hood, a mounting bracket, an ash discharge hopper, a valve plate, and a drive device. The kiln head hood is located at the kiln head end of the rotary kiln body. An ash discharge port is located at the lower end of the kiln head hood. The outer contours of the ash discharge port, the mounting bracket, and the upper opening of the ash discharge hopper are all rectangular. The mounting bracket is located at the lower end of the ash discharge port, and the ash discharge hopper is located directly below the ash discharge port. The mounting bracket is positioned between the ash discharge port and the ash discharge hopper. The upper and lower walls on both sides of the mounting bracket are fixedly connected to the lower wall of the ash discharge port and the upper wall of the ash discharge hopper, respectively. The valve plate is slidably mounted within the mounting bracket, with both sides slidably connected to the mounting bracket. The valve plate slidably abuts against the lower wall of the ash discharge port, allowing the ash discharge port to be closed or opened. The drive device is mounted on the mounting bracket and connected to the valve plate, driving the valve plate to close or open the ash discharge port.

2. The rotary kiln with automatic ash discharge according to claim 1, characterized in that, The driving device includes a motor, a reducer, a drive screw, and a nut. The motor is located at the rear end of the mounting bracket, the reducer is located at the lower end of the motor, and the input shaft of the reducer is connected to the output shaft of the motor. The drive screw is located at the lower end of the valve plate, and the rear end of the drive screw is connected to the output shaft of the reducer. The nut is threadedly connected to the drive screw and is fixedly connected to the rear end of the valve plate.

3. The rotary kiln with automatic ash discharge according to claim 2, characterized in that, It also includes limit switches, which are respectively disposed at both ends of the upper end of the mounting bracket. A limit trigger rod is protruding from the upper end wall of the rear end of the valve plate. The limit trigger rod can abut against the limit switch. The limit switch is electrically connected to the motor.

4. The rotary kiln with automatic ash discharge according to claim 3, characterized in that, The limit switches are provided in four positions, and are respectively located on both sides of the upper end of the mounting bracket. A limit trigger rod is protruding from both sides of the upper wall of the rear end of the valve plate, and the limit trigger rod can abut against the limit switch respectively.

5. The rotary kiln with automatic ash discharge according to claim 3, characterized in that, It also includes an electrical control box, which is electrically connected to the motor. The electrical control box is equipped with an automatic ash discharge button, a stop button, a manual ash discharge button, and a manual shut-off button.

6. The rotary kiln with automatic ash discharge according to any one of claims 1 to 5, characterized in that, It also includes rollers, which are rotatably mounted on the inner sidewall of the mounting bracket, and the lower sidewalls of the valve plate abut against the rollers.

7. The rotary kiln with automatic ash discharge according to claim 6, characterized in that, The inner wall of the mounting bracket is recessed along its length to form a limiting groove that matches the valve plate, and both sides of the valve plate are slidably embedded in the limiting groove.

8. The rotary kiln with automatic ash discharge according to any one of claims 1 to 5, characterized in that, It also includes slide rails and sliders. The slide rails are disposed on the two inner side walls of the mounting bracket, and the sliders are slidably disposed on the slide rails. The sliders are fixedly connected to the lower end wall of the valve plate.

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