CN219511267U

CN219511267U - Multi-point detection automatic temperature control gas kiln

Info

Publication number: CN219511267U
Application number: CN202321861939.8U
Authority: CN
Inventors: 张顺; 谷翠国; 靳贺
Original assignee: Shenyang Guzi Ceramic Culture Communication Co ltd
Current assignee: Shenyang Guzi Ceramic Culture Communication Co ltd
Priority date: 2023-07-17
Filing date: 2023-07-17
Publication date: 2023-08-11
Anticipated expiration: 2033-07-17

Abstract

The utility model relates to the technical field of kilns and discloses a multi-point detection automatic temperature control gas kiln which comprises a kiln body and a flue, wherein gas ports are formed in two sides of an inner cavity of the kiln body, the gas ports are connected with a gas pipe, a plurality of through ports are formed in the top of the kiln body, isolation pipes with different lengths are respectively arranged in the inner sides of the through ports, a temperature measuring part is arranged in the inner side of the isolation pipe, and the temperature measuring part is connected with a PLC control system. The gas kiln with the automatic temperature control by multipoint detection is characterized in that a plurality of through holes are formed in the top of a kiln body, thermocouples with different lengths are inserted into an isolation tube, and one section of the bottom of the thermocouple is exposed out of the isolation tube. The thermocouple feeds the detected temperature back to the PLC control system, and the PLC control system controls the electromagnetic valve so as to control the flow of fuel, thereby controlling the flame size and realizing the adjustment of the temperature; and then the power of the fan is controlled to change the air flow velocity in the flue, adjust the air flow in the inner cavity of the kiln body and further reduce the temperature difference between the upper and lower parts of the inner cavity of the kiln body.

Description

Multi-point detection automatic temperature control gas kiln

Technical Field

The utility model relates to the technical field of kilns, in particular to a multi-point detection automatic temperature control gas kiln.

Background

The gas kiln can be provided with a larger space than the electric kiln, and the gas kiln saves more energy than the firewood kiln. So that the gas kiln is more suitable for manufacturing small and medium-sized kilns. The comprehensive cost performance is higher, but the gas kiln has the defects that compared with an electric kiln, the gas kiln is difficult to measure temperature due to relatively larger space; compared with a firewood kiln, the gas kiln has no flue which runs up and down like the inner side of the firewood kiln, so that the difference between the upper temperature and the lower temperature is larger. When the temperature is detected in the past, only the temperature of one point of the inner cavity of the kiln is detected, and because the upper and lower temperature differences of the inner cavity of the kiln are larger, a worker is required to make timely adjustment on the size of flame according to the experience mastered in the past.

Disclosure of Invention

The utility model aims to provide a multi-point detection automatic temperature control gas kiln so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the gas kiln comprises a kiln body and a flue, wherein gas ports are formed in two sides of an inner cavity of the kiln body, the gas ports are connected with a gas pipe, a plurality of through holes are formed in the top of the kiln body, isolation pipes with different lengths are respectively arranged in the inner sides of the through holes, a temperature measuring piece is arranged in the inner side of the isolation pipe, and the temperature measuring piece is connected with a PLC (programmable logic controller) control system;

an exhaust port communicated with a flue is arranged at the bottom of the inner wall of the kiln body, and a fan communicated with a PLC control system is arranged on the flue; and the fuel gas pipe is provided with an electromagnetic valve connected with the PLC control system.

Preferably, the top of the isolation pipe is provided with a ring cap which is in threaded connection with the kiln body.

Preferably, a buffer layer is arranged between the isolation tube and the ring cap.

Preferably, the top of the ring cap is rotatably connected with a cover plate.

Preferably, the inner wall of the isolation tube is provided with a heat insulation layer.

Preferably, the heat insulation layer is made of rock wool.

Preferably, the gas port is provided with a gas supplementing pipe communicated with the outside, and the gas supplementing pipe is provided with an electromagnetic valve connected with the PLC control system.

Preferably, the temperature measuring member is a thermocouple.

Compared with the prior art, the utility model has the beneficial effects that: the gas kiln with the automatic temperature control function is characterized in that a plurality of through holes are formed in the top of a kiln body, then isolation pipes with different lengths are inserted into the through holes, so that the isolation pipes are suspended at different heights in the kiln body, then the isolation pipes are fixed through connection of ring caps and the kiln body, thermocouples with different lengths are inserted into the isolation pipes, one section of the bottom of each thermocouple is exposed out of the isolation pipe, and then temperature detection at different heights is performed. The thermocouple feeds the detected temperature back to the PLC control system, the PLC control system adjusts according to preset time and temperature, and controls the flow of fuel through controlling the electromagnetic valve, so as to control the flame size to realize temperature adjustment; and then the power of the fan is controlled to change the air flow velocity in the flue, adjust the air flow in the inner cavity of the kiln body and further reduce the temperature difference between the upper and lower parts of the inner cavity of the kiln body.

Drawings

FIG. 1 is a longitudinal cross-sectional view of a kiln body in a preferred embodiment of the utility model;

FIG. 2 is a schematic structural diagram showing the connection relationship between a temperature measuring member and an isolation tube in a preferred embodiment of the present utility model;

FIG. 3 is a schematic view showing the structure of an isolation tube according to a preferred embodiment of the present utility model;

fig. 4 is a longitudinal cross-sectional view of an isolation tube in a preferred embodiment of the present utility model.

In the figure: 1. kiln body, 2, through port, 3, isolation tube, 4, temperature measuring piece, 5, ring cap, 6, gas port, 7, gas pipe, 8, gas vent, 9, solenoid valve, 10, air supplementing pipe, 11, buffer layer, 12, apron, 13, insulating layer, 14, flue, 15, fan.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution:

the utility model provides a gas kiln of automatic accuse temperature of multi-point detection, includes kiln body 1 and flue 14, and the inner wall bottom of kiln body 1 is provided with the gas vent 8 with the flue 14 intercommunication, is provided with the fan 15 with PLC control system intercommunication on the flue 14. The PLC control system controls the working condition of the fan 15 to drive the air inside the flue 14 to flow, and controls the air flow velocity inside the flue by controlling the power of the fan 15 and then the air inside the kiln body 1 flows along with the air flow velocity, so that the heat quantity in the upper part, the middle part and the lower part of the inner cavity of the kiln body 1 can be more uniform.

Gas ports 6 are arranged on two sides of the inner cavity of the kiln body 1, and the gas ports 6 are connected with a gas pipe 7. The gas port 6 is provided with a gas supplementing pipe 10 communicated with the outside, the gas supplementing pipe 10 mainly provides enough oxygen for fuel combustion at the gas port 6, and the gas supplementing pipe 10 and the gas pipe 7 are respectively provided with an electromagnetic valve 9 connected with a PLC control system. The electromagnetic valve 9 can be controlled through the PLC control system, so that the flow of the inner sides of the air supplementing pipe 10 and the gas pipe 7 can be controlled, and the size of the fire source in the kiln body 1 can be controlled.

A row of five transverse openings 2 are formed in the top of the kiln body 1 near the innermost wall, isolation pipes 3 with different lengths are respectively arranged on the inner sides of the five openings 2, the isolation pipes 3 are used for isolating the air in the inner cavity of the kiln body 1 in a certain range and are in contact with temperature measuring pieces 4, the temperature measuring pieces 4 are arranged on the inner sides of the isolation pipes 3, the temperature measuring pieces 4 can detect the temperature of the inner cavity of the kiln body 1 at different heights, and all the temperature measuring pieces 4 send the detected temperature to a PLC control system connected with the temperature measuring pieces. The temperature measuring member 4 uses a thermocouple. The isolating pipe 3 wraps the top of the thermocouple, one section of the bottom of the thermocouple is exposed out of the isolating pipe 3 to contact with the air inside the kiln body 1, the temperature of the surrounding air is detected, the surrounding air is fed back to the PLC control system, and the PLC control system controls the power of the fan 15 or the supply quantity of the fuel inside the fuel pipe 7 through the electromagnetic valve 9 according to the data transmitted by different thermocouples and the transmitted temperature and temperature difference to adjust.

The top of the isolation tube 3 is provided with a ring cap 5, the ring cap 5 is used for fixing the isolation tube 3, and the ring cap 5 is in threaded connection with the outer wall of the kiln body 1 to prop up the isolation tube 3. The ring cap 5 preferably does not extend to the layer of firebrick because the firebrick is not strong enough and the internal threads formed are not wear resistant. The inside of the ring cap 5 is provided with a bell mouth for facilitating the insertion of the thermocouple.

A buffer layer 11 is arranged between the isolation tube 3 and the ring cap 5, and rock wool is used for the buffer layer 11, so that the buffer effect can be achieved, and the heat insulation and sealing improvement effects can be achieved.

The top of the ring cap 5 is rotatably connected with a cover plate 12, and when the thermocouple is taken out, the cover plate 12 is rotated to move to the top of the ring cap 5, so that the top opening of the ring cap 5 is closed.

The inner wall of the insulating tube 3 is provided with a heat insulating layer 13. The heat insulating layer 13 is made of rock wool. The rock wool has the heat insulation effect, is high-temperature resistant and relatively soft, can better play a role in heat insulation, and meanwhile, avoids collision with the isolation tube 3 when the thermocouple is inserted, so that the thermocouple is damaged.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a gas kiln of automatic accuse temperature of multiple spot detection, includes kiln body (1) and flue (14), is provided with gas mouth (6) in the inner chamber both sides of kiln body (1), gas mouth (6) are connected with gas pipe (7), a plurality of openings (2) have been seted up at the top of kiln body (1), and the inboard of a plurality of openings (2) is provided with unequally long isolation tube (3) respectively, temperature measurement spare (4) have been placed to the inboard of isolation tube (3), temperature measurement spare (4) are connected with PLC control system;

an exhaust port (8) communicated with a flue (14) is arranged at the bottom of the inner wall of the kiln body (1), and a fan (15) communicated with a PLC control system is arranged on the flue (14); the gas pipe (7) is provided with an electromagnetic valve (9) connected with the PLC control system.

2. The multi-point detection automatic temperature control gas kiln according to claim 1, wherein: the top of the isolation pipe (3) is provided with a ring cap (5), and the ring cap (5) is in threaded connection with the kiln body (1).

3. A multi-point detection automatic temperature control gas kiln according to claim 2, wherein: a buffer layer (11) is arranged between the isolation tube (3) and the ring cap (5).

4. A multi-point detection automatic temperature control gas kiln according to claim 2, wherein: the top of the ring cap (5) is rotatably connected with a cover plate (12).

5. A multi-point detection automatic temperature control gas kiln according to claim 1 or 2, characterized in that: the inner wall of the isolation tube (3) is provided with a heat insulation layer (13).

6. The multi-point detection automatic temperature control gas kiln according to claim 5, wherein: the heat insulation layer (13) is made of rock wool.

7. The multi-point detection automatic temperature control gas kiln according to claim 1, wherein: the gas inlet (6) is provided with a gas supplementing pipe (10) communicated with the outside, and the gas supplementing pipe (10) is provided with an electromagnetic valve (9) connected with the PLC control system.

8. The multi-point detection automatic temperature control gas kiln according to claim 1, wherein: the temperature measuring piece (4) is a thermocouple.