Drawing device of powder sintering kiln

Abstract

The utility model relates to the technical field of sintering kilns, and provides a drawing device of a powder sintering kiln, which comprises a drawing conveying belt, a drawing cover, an induction mechanism, a drawing door opening and closing mechanism, a push plate conveying belt, a hydrogen pipe and an ignition pipe, the drawing cover is provided with a drawing cover inlet and a drawing cover outlet, the drawing cover inlet is connected with an outlet of the kiln, and the drawing conveying belt is located on the inner side of the drawing cover outlet; the push plate conveying belt is arranged on the outer side of the outlet of the drawing cover, and the push plate conveying belt and the drawing conveying belt are located on the same straight line; a plurality of sensing mechanisms are arranged on one side of the drawing cover and are used for sensing the powder boxes; the drawing door opening and closing mechanism is arranged at an outlet of the drawing cover, a hydrogen pipe is arranged at the bottom of the drawing door opening and closing mechanism, and the hydrogen pipe is provided with a control electromagnetic valve; an ignition pipe is arranged at a gas outlet of the hydrogen pipe, and the ignition pipe and the hydrogen pipe are respectively connected with external hydrogen conveying equipment; according to the utility model, gas in the kiln can be effectively prevented from flowing out to the outside, and the safety of the surrounding environment is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering kilns, in particular to a kiln discharge device for a powder sintering kiln. Background Art

[0002] At present, the sintering kilns used for continuous industrial production of powder materials include: tunnel kiln, push plate kiln, roller kiln, mesh belt furnace and rotary kiln. Among them, the tunnel kiln is usually loaded with materials by kiln carts, and the pusher pushes the kiln cart loaded with materials into the kiln body sintering chamber and pushes it forward. In the push plate kiln, the powder material is placed in the material box, and the material box is placed on the push plate. The pusher pushes the push plate horizontally to make the material box move forward, and the material box enters the furnace and then comes out from the tail of the furnace. In the roller kiln, there are many freely rotatable rollers arranged perpendicular to the kiln direction at the bottom of the kiln. The material box is placed flat on the roller, and the roller is driven by the roller connecting chain and sprocket outside the furnace to rotate in the same direction. The material box moves forward on the rotating roller. In the mesh belt furnace, the material box is placed flat on the moving mesh belt, and the movement of the mesh belt drives the material box to move forward.

[0003] When a tunnel kiln or a push-plate kiln is unloaded, the push plate with the powder box needs to be pushed out of the kiln. The prior art lacks effective measures for sealing the kiln. When unloading the kiln, the problem of gas leakage in the kiln still occurs, causing the gas in the kiln to pollute the surrounding environment. Utility Model Content

[0004] In view of the above-mentioned defects, the purpose of the utility model is to propose a kiln discharge device for a powder sintering kiln, so as to solve the problem that the prior art lacks effective measures for sealing the kiln, and the gas in the kiln still leaks out when the kiln is discharged, causing the gas in the kiln to pollute the surrounding environment.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A kiln discharge device for a powder sintering kiln, comprising a kiln discharge conveyor belt, a kiln discharge cover, an induction mechanism, a kiln discharge door opening and closing mechanism, a push plate conveyor belt, a hydrogen pipe and an ignition pipe;

[0007] The kiln hood is provided with a kiln hood inlet and a kiln hood outlet, the kiln hood inlet is connected to the outlet of the kiln, the kiln conveyor belt is arranged inside the kiln hood, and the kiln conveyor belt is located inside the kiln hood outlet;

[0008] The push plate conveyor belt is arranged outside the kiln hood outlet, and the push plate conveyor belt and the kiln conveyor belt are located on the same straight line;

[0009] A plurality of sensing mechanisms are provided on one side of the kiln discharge cover for sensing the powder box;

[0010] The kiln discharge door switch mechanism is arranged at the kiln discharge cover outlet, the hydrogen pipe is arranged at the bottom of the kiln discharge door switch mechanism, and the hydrogen pipe is arranged with a control solenoid valve;

[0011] An ignition pipe is provided at the gas outlet of the hydrogen pipe, and the ignition pipe and the hydrogen pipe are respectively connected to external hydrogen transmission equipment.

[0012] Preferably, the hydrogen pipe is transversely arranged below the kiln door opening and closing mechanism, and the hydrogen pipe is provided with a plurality of gas outlets arranged transversely, and the ignition pipe extends to one of the gas outlets.

[0013] Preferably, the kiln door opening and closing mechanism comprises a driving telescopic cylinder, a door base and a lifting door;

[0014] The door base is tiltedly arranged at the kiln cover outlet, the lifting door is slidably arranged on the door base, the driving telescopic cylinder is arranged on the top of the door base, the telescopic end of the driving telescopic cylinder is connected to the lifting door, and drives the lifting door to slide along the door base.

[0015] Preferably, the kiln door opening and closing mechanism also includes a transmission assembly, which includes a first transmission wheel, a second transmission wheel and a transmission chain, wherein the first transmission wheel is rotatably arranged on the kiln door cover, the second transmission wheel is arranged on the top of the door base, one end of the transmission chain is connected to the telescopic end of the driving telescopic cylinder, and the other end is connected to the lifting door after bypassing the first transmission wheel and the second transmission wheel, and the transmission chain is meshed and connected with the first transmission wheel and the second transmission wheel respectively.

[0016] Preferably, a forked chain is provided at one end of the transmission chain, two mounting seats are provided at the top of the lifting door, and both ends of the forked chain are rotatably connected to the two mounting seats respectively.

[0017] Preferably, pressure blocks are respectively provided on both sides of the bottom of the door base.

[0018] Preferably, the door base is arranged with a plurality of pressure plate mechanisms, the pressure plate mechanisms include a driving motor and a pressure plate, and the pressure plate is arranged at the output end of the driving motor.

[0019] Preferably, the sensing mechanism adopts a travel switch.

[0020] One of the above technical solutions has the following advantages or beneficial effects:

[0021] A kiln discharge device for a powder sintering kiln, wherein a flame is continuously formed at the outlet of an ignition pipe, and a kiln discharge door opening and closing mechanism is started when a push plate is pushed out of the kiln, and at the same time, a solenoid valve is controlled to open, so that the outlet of a kiln cover is opened, and at the same time, an external hydrogen transmission device introduces hydrogen into a hydrogen pipe and sprays it out from the gas outlet. While the hydrogen is sprayed out, it is ignited by the flame of the ignition pipe, so that the hydrogen continues to burn at the outlet of the kiln cover. After the outlet of the kiln cover is opened, the gas in the kiln can be effectively prevented from flowing out to the outside, thereby protecting the safety of the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0023] Figure 2 It is a side view of a kiln cover of an embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of a kiln door opening and closing mechanism in one embodiment of the utility model;

[0025] Figure 4 It is a partial structural schematic diagram of an embodiment of the utility model.

[0026] Among them: kiln hood 1, kiln hood inlet 11, kiln hood outlet 12, induction mechanism 2, kiln door opening and closing mechanism 3, driving telescopic cylinder 31, door base 32, pressure block 321, pressure plate mechanism 322, driving motor 3221, pressure plate 3222, lifting door 33, mounting seat 331, transmission assembly 34, first transmission wheel 341, second transmission wheel 342, transmission chain 343, forked chain 344, push plate conveyor belt 4, hydrogen pipe 5, gas outlet 51, ignition pipe 6. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0029] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Combine the following Figures 1 to 4 The utility model is described as follows: a kiln discharge device of a powder sintering kiln of an embodiment of the utility model comprises a kiln discharge conveyor belt, a kiln discharge cover 1, an induction mechanism 2, a kiln discharge door opening and closing mechanism 3, a push plate conveyor belt 4, a hydrogen pipe 5 and an ignition pipe 6;

[0032] The kiln hood 1 is provided with a kiln hood inlet 11 and a kiln hood outlet 12, the kiln hood inlet 11 is connected to the outlet of the kiln, the kiln conveyor belt is arranged inside the kiln hood 1, and the kiln conveyor belt is located inside the kiln hood outlet 12;

[0033] The push plate conveyor belt 4 is arranged outside the kiln hood outlet 12, and the push plate conveyor belt 4 and the kiln conveyor belt are located on the same straight line;

[0034] A plurality of sensing mechanisms 2 are provided on one side of the kiln cover 1 for sensing the powder box;

[0035] The kiln door opening and closing mechanism 3 is arranged at the kiln cover outlet 12, the bottom of the kiln door opening and closing mechanism 3 is provided with the hydrogen pipe 5, and the hydrogen pipe 5 is provided with a control solenoid valve;

[0036] An ignition pipe 6 is provided at the gas outlet of the hydrogen pipe 5 , and the ignition pipe 6 and the hydrogen pipe 5 are respectively connected to external hydrogen transport equipment.

[0037] Specifically, in the present embodiment, hydrogen continues to flow out of the ignition tube 6, and the hydrogen is ignited at the outlet of the ignition tube 6 to continuously form a flame. When the sensing mechanism 2 senses that the push plate moves with the powder box to the kiln conveyor belt, all sensing mechanisms 2 will send a signal to the kiln door switch mechanism 3 and the control solenoid valve after receiving the arrival signal. The kiln door switch mechanism 3 will start, and at the same time, the solenoid valve will be controlled to open, so that the kiln hood outlet 12 is open. At the same time, the external hydrogen transmission equipment introduces hydrogen into the hydrogen pipe 5 and sprays it out from the outlet 51. While the hydrogen is sprayed out, it is ignited by the flame of the ignition tube 6, so that the hydrogen continues to burn at the kiln hood outlet 12. After the kiln hood outlet 12 is opened, the gas in the kiln can be effectively prevented from flowing out to the outside, thereby protecting the safety of the surrounding environment.

[0038] Furthermore, the hydrogen pipe 5 is transversely arranged below the kiln door opening and closing mechanism 3 , and the hydrogen pipe 5 is transversely arranged with a plurality of gas outlets 51 , and the ignition pipe 6 extends to one of the gas outlets 51 .

[0039] Specifically, in this embodiment, the hydrogen pipe 5 sprays hydrogen uniformly in a transverse direction, so that when the kiln door opening and closing mechanism 3 is opened, the kiln cover outlet 12 is covered with hydrogen in a large area and ignited, effectively preventing the gas in the kiln from leaking out.

[0040] Furthermore, the kiln door opening and closing mechanism 3 includes a driving telescopic cylinder 31, a door base 32 and a lifting door 33; the door base 32 is tilted at the kiln cover outlet 12, the lifting door 33 is slidably set on the door base 32, the driving telescopic cylinder is set at the top of the door base 32, the telescopic end of the driving telescopic cylinder is connected to the lifting door 33, driving the lifting door 33 to slide along the door base 32.

[0041] Specifically, in this embodiment, after the telescopic cylinder 31 is driven to start, the lifting door 33 is driven to move up and down along the door base 32, thereby closing or opening the kiln cover outlet 12, thereby realizing the operation of the powder box out of the kiln and closing the kiln.

[0042] Furthermore, the kiln door opening and closing mechanism 3 also includes a transmission assembly 34, which includes a first transmission wheel 341, a second transmission wheel 342 and a transmission chain 343. The first transmission wheel 341 is rotatably set on the kiln cover 1, and the second transmission wheel 342 is set on the top of the door base 32. One end of the transmission chain 343 is connected to the telescopic end of the driving telescopic cylinder 31, and the other end is connected to the lifting door 33 after bypassing the first transmission wheel 341 and the second transmission wheel 342. The transmission chain 343 is meshed and connected with the first transmission wheel 341 and the second transmission wheel 342 respectively.

[0043] Specifically, in the present embodiment, the telescopic cylinder 31 is driven to drive its telescopic end to retract, and the chain is pulled to move around the first transmission wheel 341 and the second transmission wheel 342, thereby driving the lifting door 33 to rise along the door base 32, thereby opening the kiln hood outlet 12. When the kiln hood outlet 12 needs to be closed, it is only necessary to drive the telescopic cylinder 31 to drive its telescopic end to extend. Under the action of gravity, the lifting door 33 naturally descends to the lowest end along the door base 32, thereby closing the kiln hood outlet 12. The structure is simple and the cost is low.

[0044] Furthermore, a forked chain 344 is provided at one end of the transmission chain 343 , two mounting seats 331 are provided at the top of the lifting door 33 , and two ends of the forked chain 344 are rotatably connected to the two mounting seats 331 , respectively.

[0045] Specifically, in this embodiment, the two ends of the lifting door 33 are respectively connected by the forked chain 344, so that the lifting door 33 is more evenly stressed, which can avoid the lifting door 33 being pulled by the transmission chain 343 and causing it to be uneven on the left and right, and avoid unstable movement or even jamming.

[0046] Furthermore, pressure blocks 321 are respectively provided on both sides of the bottom of the door base 32. Specifically, in this embodiment, the two pressure blocks 321 are screwed on the door base 32, which can limit the outer side of the lifting door 33 and reduce the risk of the lifting door 33 falling from the door base 32.

[0047] Furthermore, the door base 32 is arranged with a plurality of pressure plate mechanisms 322 , and the pressure plate mechanism 322 includes a driving motor 3221 and a pressure plate 3222 , and the pressure plate 3222 is arranged at the output end of the driving motor 3221 .

[0048] Specifically, in the present embodiment, when the lifting door 33 moves to the side of the pressure plate mechanism 322, the driving motor 3221 is started, and the pressure plate 3222 is rotated to move it to the outside of the lifting door 33, pressing the lifting door 33 toward the door base 32, thereby ensuring that the lifting door 33 and the door base 32 are tightly sealed, avoiding the problem of gas leakage in the kiln due to gas circulation.

[0049] Furthermore, the induction mechanism 2 adopts a travel switch. Specifically, in this embodiment, when the push plate with the powder box hits the travel switch, the travel switch will receive a signal, and the response speed is faster.

[0050] Other structures and operations of the kiln discharge device of the powder sintering kiln according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0051] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A kiln discharge device for a powder sintering kiln, characterized in that: It includes a kiln conveyor belt, a kiln cover, a sensing mechanism, a kiln door opening and closing mechanism, a push plate conveyor belt, a hydrogen pipe and an ignition pipe; The kiln hood is provided with a kiln hood inlet and a kiln hood outlet, the kiln hood inlet is connected to the outlet of the kiln, the kiln conveyor belt is arranged inside the kiln hood, and the kiln conveyor belt is located inside the kiln hood outlet; The push plate conveyor belt is arranged outside the kiln hood outlet, and the push plate conveyor belt and the kiln conveyor belt are located on the same straight line; A plurality of sensing mechanisms are provided on one side of the kiln discharge cover for sensing the powder box; The kiln discharge door switch mechanism is arranged at the kiln discharge cover outlet, the hydrogen pipe is arranged at the bottom of the kiln discharge door switch mechanism, and the hydrogen pipe is arranged with a control solenoid valve; An ignition pipe is provided at the gas outlet of the hydrogen pipe, and the ignition pipe and the hydrogen pipe are respectively connected to external hydrogen transmission equipment.

2. The kiln discharge device of a powder sintering kiln according to claim 1, characterized in that: The hydrogen pipe is transversely arranged below the kiln door opening and closing mechanism, and a plurality of gas outlets are arranged transversely on the hydrogen pipe, and the ignition pipe extends to one of the gas outlets.

3. The kiln discharge device of a powder sintering kiln according to claim 1, characterized in that: The kiln door opening and closing mechanism comprises a driving telescopic cylinder, a door base and a lifting door; The door base is tiltedly arranged at the kiln cover outlet, the lifting door is slidably arranged on the door base, the driving telescopic cylinder is arranged on the top of the door base, the telescopic end of the driving telescopic cylinder is connected to the lifting door, and drives the lifting door to slide along the door base.

4. The kiln discharge device of a powder sintering kiln according to claim 3, characterized in that: The kiln door opening and closing mechanism also includes a transmission assembly, which includes a first transmission wheel, a second transmission wheel and a transmission chain. The first transmission wheel is rotatably arranged on the kiln door, and the second transmission wheel is arranged on the top of the door base. One end of the transmission chain is connected to the telescopic end of the driving telescopic cylinder, and the other end is connected to the lifting door after bypassing the first transmission wheel and the second transmission wheel. The transmission chain is meshed and connected with the first transmission wheel and the second transmission wheel respectively.

5. The kiln discharge device of a powder sintering kiln according to claim 4, characterized in that: A forked chain is arranged at one end of the transmission chain, two mounting seats are arranged at the top of the lifting door, and two ends of the forked chain are rotatably connected to the two mounting seats respectively.

6. The kiln discharge device of a powder sintering kiln according to claim 3, characterized in that: Pressing blocks are respectively arranged on both sides of the bottom of the door base.

7. The kiln discharge device of a powder sintering kiln according to claim 3, characterized in that: The door base is arranged with a plurality of pressure plate mechanisms, the pressure plate mechanisms include a driving motor and a pressure plate, and the pressure plate is arranged at the output end of the driving motor.

8. The kiln discharge device of a powder sintering kiln according to claim 1, characterized in that: The induction mechanism adopts a travel switch.

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