Exhaust adjusting structure of kiln

Abstract

The utility model relates to the technical field of kiln exhaust devices, in particular to a kiln exhaust adjusting structure which comprises an exhaust execution piece installed on an exhaust pipeline of a kiln body. The exhaust execution part comprises a fixing ring sleeve, a shielding part and a traction part, the fixing ring sleeve is hooped on the exhaust pipeline, the shielding part is arranged in the range surrounded by the fixing ring sleeve, and a ventilation pipeline for shielding the exhaust pipeline is embedded in the shielding part; the shielding part is driven by the traction part to move along a preset track, and therefore the flux of gas in the exhaust pipeline is adjusted. According to the utility model, the exhaust execution piece is arranged on the exhaust pipeline of the kiln, so that the exhaust flux of each branch pipeline can be respectively adjusted, and the gas displacement can be quickly adjusted according to the change of the furnace pressure, thereby balancing the furnace pressure; the interior of the exhaust execution part and the assembly connection position of the exhaust execution part and the exhaust pipeline are sealed, and the assembly sealing performance of the exhaust execution part and the exhaust pipeline is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of kiln exhaust devices, and particularly relates to a kiln exhaust adjustment structure. Background Technique

[0002] With the improvement of kiln production capacity and the diversification of sintered products, the requirements for exhausting gas inside the kiln are getting higher and higher. During different production capacities and the firing processes of different products, the amount of waste gas generated is also inconsistent. With the change of the temperature inside the furnace, it is necessary to adjust the furnace pressure by exhausting gas.

[0003] At present, the exhaust pipes of most newly built kilns or old kilns are that the branch pipes are connected to the main chimney. The diameter of the main chimney is large. When balancing the furnace pressure, it is difficult to accurately control the exhaust volume. The single gas emission amount is often too much or too little, and it needs to be adjusted multiple times to meet the requirements, resulting in low adjustment efficiency.

[0004] Based on the problems in the prior art, the utility model provides a kiln exhaust adjustment structure. Content of the Utility Model

[0005] The purpose of the utility model is to provide a kiln exhaust adjustment structure to solve the technical problem of low adjustment efficiency of repeatedly exhausting gas to balance the furnace pressure in the prior art.

[0006] The technical solution of the utility model is: a kiln exhaust adjustment structure, which includes an exhaust actuator. The exhaust actuator is installed on the exhaust pipe of the kiln body; the exhaust actuator includes a fixed ring sleeve, a shielding part and a traction part. The fixed ring sleeve is hoop-shaped on the exhaust pipe. The shielding part is located within the range defined by the fixed ring sleeve and is embedded to shield the ventilation pipeline of the exhaust pipe; the shielding part moves along a preset track under the drive of the traction part, so as to adjust the gas flux in the exhaust pipe.

[0007] Preferably, a redundant unit is arranged on the fixed ring sleeve. A cavity is arranged inside the redundant unit to provide a space for accommodating and moving the traction part;

[0008] A filling area for sealing is arranged on the peripheral circle of the edge of the redundant unit, and a rubber material is filled in the filling area.

[0009] Preferably, a scale is connected to the fixed ring sleeve. A pointer rod installed on the traction part indicates the scale reading on the scale. The scale is used to directly or indirectly reflect the current gas flux state in the exhaust pipe or the furnace pressure state inside the kiln body; thus, during the process of the traction part driving the shielding part to move, it shows the state of the gas flux in the exhaust pipe or the furnace pressure state inside the kiln body corresponding to any moment.

[0010] Preferably, a sealing ring is arranged at the embedded connection part between the fixed ring sleeve and the exhaust pipe to achieve sealing.

[0011] Preferably, the exhaust actuator is configured as a flap valve structure.

[0012] Preferably, the exhaust actuator is configured as a structure where the fan blades open and close.

[0013] Preferably, the exhaust duct includes a main duct and branch ducts connected to several chambers inside the furnace body, and an exhaust actuator is arranged on each branch duct.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] (1) By arranging an exhaust actuator on the exhaust duct of the furnace, the present utility model can respectively adjust the exhaust flux of each branch duct, and quickly adjust the exhaust volume according to the change of furnace pressure so as to balance the furnace pressure.

[0016] (2) The present utility model performs a sealing arrangement inside the exhaust actuator and at the assembly connection between the exhaust actuator and the exhaust duct to maintain the assembly sealing performance of the exhaust actuator and the exhaust duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0018] Figure 1 It is a partial front view of the exhaust adjustment mechanism provided by the present utility model assembled on the furnace body;

[0019] Figure 2 It is a partial top view of the exhaust adjustment mechanism provided by the present utility model assembled on the furnace body;

[0020] Figure 3 It is a schematic diagram of the first embodiment of the exhaust actuator provided by the present utility model;

[0021] Figure 4 It is a schematic diagram of the second embodiment of the exhaust actuator provided by the present utility model;

[0022] Wherein: 1. Exhaust actuator;

[0023] 11. Fixed ring sleeve; 111. Redundant unit; 112. Filling area; 12. Shielding part; 13. Traction part;

[0024] 11a. Plug plate frame, 12a. Plug plate; 13a. Plugging handle; 111a. Clamping cavity track; 112a. Inner edge line of the clamping cavity track;

[0025] 11b. Planetary disc frame; 12b. Fan blades; 13b. Gear box; 111b. Accommodation cavity; 112b. Inner edge line of the accommodation cavity;

[0026] 2. Exhaust duct; 21. Main duct; 22. Branch duct;

[0027] 3. Furnace body; 4. Scale; 5. Indicator rod; 6. Sealing ring; 7. Support rod. Specific implementation mode

[0028] The following combines specific embodiments to further elaborate on the content of the present utility model:

[0029] As Figure 1 shown in combination with the attached Figure 2 , a kiln exhaust gas regulation structure includes an exhaust actuator 1, and the exhaust actuator 1 is installed on the exhaust pipe 2 of the furnace body 3; the exhaust pipe 2 includes a main pipe 21 and branch pipes 22 connected to several chambers inside the furnace body 3, and an exhaust actuator 1 is configured on each branch pipe 22.

[0030] Referring to the attached Figure 3 , the exhaust actuator 1 includes a fixed ring sleeve 11, a shielding part 12 and a traction part 13. The fixed ring sleeve 11 is hoop-shaped on the exhaust pipe 2, the shielding part 12 is placed within the range surrounded by the fixed ring sleeve 11, and the ventilation pipeline of the exhaust pipe 2 is embedded and shielded; the shielding part 12 moves along a preset track under the drive of the traction part 13, thereby adjusting the gas flux in the exhaust pipe 2.

[0031] The traction part 13 can be manually operated. The operator manually adjusts the pipeline flux of the exhaust pipe 2 through the traction part 13 according to the furnace pressure of the kiln, thereby adjusting the furnace pressure inside the kiln.

[0032] The traction part 13 can also be automatically operated. By configuring a controller (PLC controller) and an actuator, the controller receives the furnace pressure detected by the sensor, sends a control signal to the actuator, and the actuator moves to a specified position according to the received control signal to adjust the opening degree of the shielding part 12, thereby automatically adjusting the flux of the exhaust pipe 2 to achieve the target furnace pressure. The target furnace pressure can be the balance pressure or the working pressure.

[0033] Specifically, a redundant unit 111 is provided on the fixed ring sleeve 11. The redundant unit 111 extends and protrudes from the part of the hoop-shaped exhaust pipe 2, and a cavity is provided inside to provide an installation space and a moving space for the traction part 13.

[0034] A filling area 112 is arranged on the peripheral edge of the redundant unit 111, and a rubber material is filled inside to reduce the open space. Since the exhaust pipe 2 is connected to the furnace body 3, the exhaust actuator 1 is connected to the exhaust pipe 2 by exposing the gas path through the shielding part 12. Filling the rubber material in the cavity can prevent the internal cavity space of the exhaust actuator 1 from being too large and affecting the furnace pressure inside the furnace.

[0035] Moreover, a sealing ring 6 is provided at the fitting connection between the fixed collar 11 and the exhaust duct 2 to achieve sealing, improve the assembly sealing performance of the exhaust actuator 1, and prevent air leakage from affecting the furnace pressure.

[0036] In addition, a scale 4 is connected to the fixed collar 11, and a indicating rod 5 is connected to the traction part 13. The indicating rod 5 moves with the traction part 13 and indicates the scale reading on the corresponding scale 4 at the moment, which can directly or indirectly reflect the gas flux state in the exhaust duct 2 or the furnace pressure state in the furnace body 3 at present. Thus, during the process of the traction part 13 driving the shielding part 12 to act, the gas flux state in the exhaust duct 2 or the furnace pressure state in the furnace body 3 corresponding to any moment is shown.

[0037] The scale on the scale 4 represents the gas flux in the exhaust duct 2, the through - diameter area released by the shielding part 12, or the moving distance (circumference) of the indicating rod 5. The exhaust situation of the exhaust duct 2 can be obtained through physical relationship conversion to accurately adjust the furnace pressure.

[0038] In one embodiment, referring to the attached Figure 3 , the exhaust actuator 1 is set as a flap valve structure. Correspondingly, the fixed collar 11 is set as a flap frame 11a, the shielding part is set as a flap 12a, which is a circular plate and shields the diameter of the exhaust duct 2. The traction part 13 is set as a plug - and - pull handle 13a. Referring to the attached Figure 2 Combined with the attached Figure 3 , the exhaust duct 2 is vertically arranged, the plug - and - pull handle 13a is horizontally arranged, the scale 4 is set as a straight ruler and is parallel to the plug - and - pull handle 13a. The indicating rod 5 is installed on the plug - and - pull handle 13a and is perpendicular to the scale 4. When the plug - and - pull handle 13a moves, the gas pipe diameter size released by the flap 12a is changed, and the indicating rod 5 indicates in real time for a visualized display.

[0039] The flap frame 11a has a clamping cavity track 111a for limiting the flap 12a. The open - mouth area of the clamping cavity track 111a is for the installation and movement of the flap 12a. The inner edge line 112a of the internal clamping cavity track is filled with rubber material to reduce the cavity space.

[0040] In another embodiment, referring to the attached Figure 4 , the exhaust actuator 1 is set as a fan - blade opening - and - closing structure. Correspondingly, the fixed collar 11 is set as a planetary disc frame 11b, which is clamped on the exhaust duct 2. The multiple groups of fan blades 12b inside combine to shield the diameter of the exhaust duct 2. Through the meshing transmission between the fan - blade gears on the planetary disc frame 11b and the gears on the gearbox 13b, the fan - blade gears inside the planetary disc frame 11b are driven to drive the fan blades to rotate and close or spread, thereby controlling the exhaust flux of the exhaust duct 2.

[0041] The scale 4 is set as an arc - shaped scale, and is erected on one side of the free end of the gearbox 13b through a support rod 7. The indicating rod 4 rotates with the gears inside the gearbox 13b and moves to indicate the scale on the scale 7.

[0042] The fan blade 12b, the gear for driving the rotation and contraction of the fan blade, and the gear disc are installed in the accommodating cavity 111b of the planetary disc frame 11b. The inner edge line 112 of the accommodating cavity on the inner side of the accommodating cavity 111b is filled with rubber material to reduce the cavity space.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention.

Claims

1. A kiln exhaust adjustment structure, characterized in that: It includes an exhaust actuator, which is installed on the exhaust pipe of the kiln body; The exhaust actuator comprises a fixed ring sleeve, a shielding portion and a traction portion, wherein the fixed ring sleeve is clamped on the exhaust pipe, the shielding portion is placed within the range of the fixed ring sleeve and is embedded in the ventilation pipeline that shields the exhaust pipe; Driven by the traction part, the shielding part moves along a preset trajectory, thereby adjusting the flux of the gas in the exhaust duct.

2. A kiln exhaust adjustment structure according to claim 1, characterized in that: The fixing ring sleeve is provided with a redundant unit, and a cavity is provided inside the redundant unit to provide accommodation and activity space for the traction part; A filling area for sealing is provided around the edge of the redundant unit, and the filling area is filled with rubber material.

3. A kiln exhaust adjustment structure according to claim 2, characterized in that: A scale is connected to the fixed ring sleeve, and an indicator rod installed on the traction part indicates the scale readings on the scale, and the scale is used to directly or indirectly reflect the current gas flux state of the exhaust duct or the furnace pressure state in the kiln main body; thereby, when the traction part drives the shielding part to move, the gas flux state in the exhaust duct or the furnace pressure state in the kiln main body corresponding to any moment is indicated.

4. A kiln exhaust adjustment structure according to claim 2, characterized in that: A sealing ring is arranged at the joint where the fixing ring sleeve and the exhaust pipe are embedded to achieve sealing.

5. The kiln exhaust adjustment structure according to claim 1, characterized in that: The exhaust actuator is configured as a plug valve structure.

6. A kiln exhaust adjustment structure according to claim 1, characterized in that: The exhaust actuator is configured as a fan blade opening and closing structure.

7. The kiln exhaust adjustment structure according to claim 1, characterized in that: The exhaust duct includes a main pipe and branch pipes connected to a plurality of chambers in the kiln main body, and each of the branch pipes is provided with the exhaust actuator.

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