CN214502121U

CN214502121U - Automatic control device for kiln ventilation

Info

Publication number: CN214502121U
Application number: CN202120650085.3U
Authority: CN
Inventors: 夏剑石; 陈刚; 刘海英; 付锦双; 张宏兴
Original assignee: Zhongtao Sanitary Waro Manufacturing Co ltd Of Tangshan
Current assignee: Zhongtao Sanitary Waro Manufacturing Co ltd Of Tangshan
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-10-26
Anticipated expiration: 2031-03-31

Abstract

The utility model relates to an automatic control device technical field especially relates to a kiln ventilation automatic control device. The kiln comprises a kiln body and a controller, wherein a preheating zone, a burning zone and a cooling zone are sequentially arranged on the kiln body; the first fan is connected with a heat exchange pipe which is arranged at the top of the kiln chamber and used for providing air for the burning zone through a first ventilation pipe; the cooling zone is provided with a first exhaust pipe, the preheating zone is provided with a second exhaust pipe, the two exhaust pipes are connected to a second vent pipe on a second fan, a heat exchanger and a first electric valve are arranged between the first exhaust pipe and the second vent pipe, and a second electric valve is arranged between the second exhaust pipe and the second vent pipe; one side of the first exhaust pipe, which is far away from the burning zone, is provided with a first thermocouple, and one side of the second exhaust pipe, which is close to the burning zone, is provided with a second thermocouple. The utility model discloses the heat that enables preheating zone, burning zone and cooling zone obtains reasonable distribution to energy utilization is higher.

Description

Automatic control device for kiln ventilation

Technical Field

The utility model relates to an automatic control device technical field especially relates to a kiln ventilation automatic control device.

Background

Sanitary wares such as toilets and the like are generally fired by a continuous tunnel kiln. Continuous tunnel kilns generally consist of three zones, a preheating zone, a burning zone and a cooling zone. The mud blank of the sanitary ware placed on the kiln car firstly enters a preheating zone to be preheated, then is fired at a high temperature in a firing zone, then is slowly cooled in a cooling zone, and finally leaves the kiln along with the kiln car. The burning zone is heated by burning of gas, burners are arranged on two sides of the burning zone of the continuous tunnel kiln, and the gas sprayed from the burners to the kiln chamber is burnt to form flame, so that high temperature is generated to fire the sanitary ware. Of these three zones, only the burning zone generates heat, while the other two zones require ventilation to control the heat.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide an automatic control device for kiln ventilation, which aims at the technical defects, wherein a plurality of heat exchange tubes are arranged at the top of a kiln chamber to provide part of air for combustion supporting for a burning zone, and the air is heated to a high temperature when reaching the burning zone, thereby saving energy; the heat exchanger is arranged between the first exhaust pipe and the second vent pipe, so that the energy utilization rate is improved.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: an automatic control device for kiln ventilation comprises a kiln body and a controller, wherein a kiln chamber penetrating through two ends of the kiln body is arranged on the kiln body, and a preheating zone, a burning zone and a cooling zone are sequentially arranged on the kiln body; a first fan is arranged on one side of the cooling zone, a first ventilation pipe is arranged at an air outlet of the first fan, a plurality of heat exchange pipes are arranged at the top of the kiln chamber at the position of the cooling zone, one end of each heat exchange pipe is connected with the first ventilation pipe through a pipeline, and the other end of each heat exchange pipe extends to the burning zone; a first exhaust pipe communicated with the kiln chamber is arranged at a position, close to the burning zone, of the cooling zone, a second exhaust pipe is arranged at one end, far away from the burning zone, of the preheating zone, a second fan is arranged at one side of the preheating zone, an air inlet of the second fan is connected with a second vent pipe, an air outlet of the second fan is connected with an air outlet pipe, the first exhaust pipe and the second exhaust pipe are simultaneously connected to the second vent pipe through pipelines, a heat exchanger and a first electric valve are sequentially arranged between the first exhaust pipe and the second vent pipe, and a second electric valve is arranged between the second exhaust pipe and the second vent pipe; a first thermocouple is arranged on one side, far away from the burning zone, of the first exhaust pipe, and a second thermocouple is arranged on one side, close to the burning zone, of the second exhaust pipe; the first fan, the second fan, the first electric valve, the second electric valve, the first thermocouple and the second thermocouple are electrically connected with the controller.

Further optimize this technical scheme, the heat exchange tube bottom is provided with the concave station that the cross-section is isosceles triangle, the both sides on heat exchange tube upper portion are provided with the inclination.

Further optimizing the technical scheme, a plurality of fins are arranged on two sides of the heat exchange tube.

Compared with the prior art, the utility model has the advantages of it is following: 1. a plurality of heat exchange pipes are arranged at the top of the kiln chamber to provide a part of air for combustion assistance for the burning zone, and the air is heated to a high temperature when reaching the burning zone, so that the energy is saved; 2. the bottom of the heat exchange tube is provided with a concave platform with an isosceles triangle section, and two sides of the upper part of the heat exchange tube are provided with inclination angles, so that the heat exchange efficiency is improved; 3. the heat exchanger is arranged between the first exhaust pipe and the second vent pipe, so that the energy utilization rate is improved.

Drawings

Fig. 1 is a schematic structural diagram of an automatic control device for kiln ventilation.

FIG. 2 is a schematic diagram showing the distribution of heat exchange tubes of an automatic control device for kiln ventilation.

Fig. 3 is a schematic structural diagram of a heat exchange tube of an automatic control device for kiln ventilation.

In the figure: 1. a kiln body; 11. a cooling zone; 12. burning the mixture into a belt; 13. preheating a belt; 14. a kiln chamber; 2. a first fan; 21. a first vent pipe; 3. a second fan; 31. a second vent pipe; 32. an air outlet pipe; 4. a first exhaust pipe; 41. a heat exchanger; 42. a first electrically operated valve; 5. a second exhaust pipe; 51. a second electrically operated valve; 6. a first thermocouple; 7. a second thermocouple; 8. a heat exchange pipe; 81. a concave platform; 82. inclination angle; 83. flying wings.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The specific implementation mode is as follows: referring to fig. 1-3, an automatic control device for kiln ventilation comprises a kiln body 1 and a controller, wherein a kiln chamber 14 penetrating through two ends of the kiln body 1 is arranged on the kiln body 1. The kiln body 1 is sequentially provided with a preheating zone 13, a burning zone 12 and a cooling zone 11, and the burning zone 12 is arranged in two vertical dotted lines in figure 1. One side of cooling zone 11 is provided with first fan 2, the air outlet of first fan 2 is provided with first ventilation pipe 21, the 14 tops of kiln room of 11 positions departments in cooling zone are provided with a plurality of heat exchange tubes 8, and heat exchange tubes 8 are provided with reasonable clearance along 14 top individual layer arrangements in kiln room between the adjacent heat exchange tubes 8, heat exchange tubes 8's one end is passed through the pipeline and is linked to each other with first ventilation pipe 21, and the other end extends to burning zone 12, can provide the air of a part burning-assistant usefulness for burning zone. A first exhaust pipe 4 communicated with a kiln chamber 14 is arranged at the position of the cooling zone 11 close to the burning zone 12, a second exhaust pipe 5 is arranged at one end of the preheating zone 13 far away from the burning zone 12, a second fan 3 is arranged at one side of the preheating zone 13, the air inlet of the second fan 3 is connected with a second ventilation pipe 31, the air outlet of the second fan 3 is connected with an air outlet pipe 32, the air outlet pipe 32 is connected with a dust remover and a chimney, said first extraction duct 4 and second extraction duct 5 are connected simultaneously by means of a duct to a second ventilation duct 31, a heat exchanger 41 and a first electric valve 42 are sequentially arranged between the first exhaust pipe 4 and the second vent pipe 31, the first electric valve 42 can adjust the air speed and the air volume of the first exhaust pipe 4 according to requirements, a second electric valve 51 is arranged between the second exhaust pipe 5 and the second ventilation pipe 31, and the second electric valve 51 can adjust the air speed and the air volume of the second exhaust pipe 5 as required. And a first thermocouple 6 is arranged on one side, far away from the burning zone 12, of the first exhaust pipe 4, and a second thermocouple 7 is arranged on one side, close to the burning zone 12, of the second exhaust pipe 5. The first fan 2, the second fan 3, the first electric valve 42, the second electric valve 51, the first thermocouple 6 and the second thermocouple 7 are electrically connected with the controller.

The bottom of the heat exchange tube 8 is provided with a concave table 81 with an isosceles triangle-shaped cross section, and two sides of the upper part of the heat exchange tube 8 are provided with inclination angles 82. Because the heat exchange pipe 8 is positioned at the top of the kiln chamber 14, the burnt hot sanitary ware is positioned at the middle upper part of the kiln chamber 14, the heat emitted by the sanitary ware is upwards dissipated, and the isosceles triangle-shaped concave table 81 can increase the heat exchange area, thereby improving the heat exchange efficiency. And the upper part of the heat exchange tube 8 is closer to the wall at the top of the kiln chamber 14, and the heat can more easily enter the upper part of the heat exchange tube 8 due to the inclined angle 82, so that the heat exchange efficiency is improved.

A plurality of fins 83 are arranged on two sides of the heat exchange tube 8, and heat exchange efficiency is further improved.

The first fan 2 and the second fan 3 are frequency conversion fans, and can adjust the air speed and the air quantity as required.

The working principle is as follows: referring to fig. 1-3, the combustion in the burning zone 12 generates heat, the second fan 3 works, the second exhaust pipe 5 exhausts air outwards, part of the heat in the burning zone 12 can be brought to the preheating zone 13 through hot air, a certain temperature gradient is formed, the temperature is higher and higher from outside to inside, and therefore the mud blank of the sanitary ware can be preheated. According to the temperature measured by the second thermocouple 7, the air speed and the air volume of the second exhaust pipe 5 can be adjusted by adjusting the second electric valve 51, so that the temperature of the preheating zone 13 meets the requirement. The air outlet duct 32 of the second fan 3 is connected to a dust collector and a stack. The sanitary ware enters the burning zone 12 for burning after being preheated, so the sanitary ware has high temperature, and when the sanitary ware moves to the outlet of the cooling zone 11 slowly along with the kiln car, the heat can be emitted outwards, and the temperature of the sanitary ware is slowly reduced because the kiln body 1 has good heat insulation. The first exhaust pipe 4 exhausts air outwards, so that heat of the burning zone 12 can be prevented from entering the cooling zone 11 to a great extent, and cooling of the sanitary ware is facilitated. The heat exchanger 41 recycles the heat extracted by the first exhaust pipe 4, water can be introduced into the heat exchanger, and the heat extracted by the first exhaust pipe 4 is used for heating the water. According to the temperature measured by the first thermocouple 6, the air speed and the air quantity of the first exhaust pipe 4 can be adjusted by adjusting the first electric valve 42, so that the temperature of one end of the cooling zone 11 close to the burning zone 12 meets the requirement. The first fan 2 conveys air to the burning zone 12 through the first ventilation pipe 21 and the heat exchange pipe 8 to supplement a part of oxygen consumed by burning, and the air is gradually heated to a high temperature due to the fact that the closer to the burning zone 12, the higher the temperature is, so that energy is saved; in addition, the air in the heat exchange tube 8 also takes away a part of heat in the cooling zone 11, which is beneficial to cooling on the premise of saving energy.

The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, belongs to the common general knowledge in this field, and the utility model discloses mainly be used for protecting the machinery setting, so the utility model discloses no longer explain control mode and circuit connection in detail.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a kiln ventilation automatic control device which characterized in that: the kiln comprises a kiln body (1) and a controller, wherein a kiln chamber (14) penetrating through two ends of the kiln body (1) is arranged on the kiln body (1), and a preheating zone (13), a burning zone (12) and a cooling zone (11) are sequentially arranged on the kiln body (1); a first fan (2) is arranged on one side of the cooling zone (11), a first ventilation pipe (21) is arranged at an air outlet of the first fan (2), a plurality of heat exchange pipes (8) are arranged at the top of the kiln chamber (14) at the position of the cooling zone (11), one end of each heat exchange pipe (8) is connected with the first ventilation pipe (21) through a pipeline, and the other end of each heat exchange pipe extends to the burning zone (12); a first exhaust pipe (4) communicated with the kiln chamber (14) is arranged at the position of the cooling zone (11) close to the burning zone (12), a second exhaust pipe (5) is arranged at one end of the preheating zone (13) far away from the burning zone (12), a second fan (3) is arranged on one side of the preheating zone (13), an air inlet of the second fan (3) is connected with a second ventilation pipe (31), an air outlet pipe (32) is connected with an air outlet of the second fan (3), the first exhaust pipe (4) and the second exhaust pipe (5) are simultaneously connected to the second ventilation pipe (31) through pipelines, a heat exchanger (41) and a first electric valve (42) are sequentially arranged between the first exhaust pipe (4) and the second vent pipe (31), a second electric valve (51) is arranged between the second exhaust pipe (5) and the second ventilation pipe (31); a first thermocouple (6) is arranged on one side, far away from the burning zone (12), of the first exhaust pipe (4), and a second thermocouple (7) is arranged on one side, close to the burning zone (12), of the second exhaust pipe (5); the first fan (2), the second fan (3), the first electric valve (42), the second electric valve (51), the first thermocouple (6) and the second thermocouple (7) are electrically connected with the controller.

2. The automatic control device for the ventilation of the kiln furnace as claimed in claim 1, characterized in that: the heat exchange tube (8) bottom is provided with concave station (81) that the cross-section is isosceles triangle, both sides on heat exchange tube (8) upper portion are provided with inclination (82).

3. The automatic control device for the ventilation of the kiln according to any one of the claims 1 or 2, characterized in that: a plurality of fins (83) are arranged on two sides of the heat exchange tube (8).