CN-224215848-U - Kiln atmosphere internal circulation and external circulation structure

CN224215848UCN 224215848 UCN224215848 UCN 224215848UCN-224215848-U

Abstract

The utility model discloses an internal circulation and external circulation structure of kiln atmosphere, which comprises a kiln main body, wherein an air inlet is arranged at the top of the kiln main body, an external exhaust fan is arranged at the top of the kiln main body, the air inlet end of the external exhaust fan is fixedly connected with a collecting pipe, the middle part of the collecting pipe is fixedly connected with an external exhaust valve, the end part of the collecting pipe is fixedly connected with a return pipe, and the bottom of the collecting pipe is correspondingly communicated with a first filter. According to the utility model, the external exhaust fan, the first filter, the water-cooling condenser, the second filter and the oxygen analyzer are matched with each other, air is not introduced in the internal circulation process, the risk of oxygen pollution can be reduced, high-temperature waste gas reenters the kiln, the heating consumption of the kiln can be reduced, the loss of heat energy is reduced, the emission of gas is reduced, the environmental pollution is reduced, the waste gas is recycled, the oxygen consumption in the production process can be reduced, and the production cost is reduced.

Inventors

ZHAO WENCHENG
CHEN HONGWEI
Xiao Nianhuang
ZHAO XUECHAO

Assignees

仙桃容百锂电材料有限公司

Dates

Publication Date: 20260508
Application Date: 20250512

Claims (6)

1. The utility model provides a kiln atmosphere internal circulation and extrinsic cycle structure, includes kiln main part (1), its characterized in that, kiln main part (1) top is provided with induced draft mouth (2), kiln main part (1) top is provided with outer exhaust fan (3), outer exhaust fan (3) exhaust end fixedly connected with collecting pipe (4), collecting pipe (4) middle part fixedly connected with outer exhaust valve (5), collecting pipe (4) end fixedly connected with back flow (6), collecting pipe (4) bottom corresponds the switch-on has first filter (7), first filter (7) outside is provided with water-cooled condenser (8), the one end that first filter (7) were kept away from to water-cooled condenser (8) is provided with inner loop air exhauster (9), inner loop air exhauster (9) exhaust end corresponds switch-on second filter (10), second filter (10) exhaust end fixedly connected with air supply pipe (11), air supply pipe (11) outside is provided with rather than corresponding oxygen analyzer main part (12), air supply pipe (11) one end fixedly connected with oxygen pipe (13), kiln main part (14) are connected with flowmeter (14) jointly between air supply pipe (1).
2. The internal and external circulation structure of kiln atmosphere according to claim 1, characterized in that the return pipe (6) is connected in correspondence with the exhaust port of the kiln.
3. The kiln atmosphere internal and external circulation structure according to claim 1, wherein two first filters (7) are provided, the filter cores of the two first filters (7) are stainless steel sintered filter screens, and the filtering precision of the first filters (7) is 1 μ.
4. The kiln atmosphere internal and external circulation structure according to claim 1, wherein two second filters (10) are provided, two filter elements of the second filters (10) are tetrafluoroethylene filter elements, and the filtering precision of the second filters (10) is 0.01 μ.
5. The kiln atmosphere internal and external circulation structure according to claim 1, wherein the exhaust end of the first filter (7) is connected with the air inlet of the water-cooled condenser (8), the exhaust end of the internal circulation exhaust fan (9) is connected with the air outlet of the water-cooled condenser (8), and the exhaust end of the internal circulation exhaust fan (9) is connected with the air inlet end of the second filter (10).
6. The kiln atmosphere internal and external circulation structure according to claim 1, wherein a plurality of oxygen inlets are formed in the bottom of the kiln main body (1), the oxygen inlets are correspondingly communicated with the air supply pipe (11), and float flow meters (14) are arranged at the bottoms of the oxygen inlets.

Description

Kiln atmosphere internal circulation and external circulation structure Technical Field The utility model relates to the technical field of kiln ventilation, in particular to an inner circulation and outer circulation structure of kiln atmosphere. Background Kiln, which is a device built with refractory materials, is mainly used for firing ceramics, sculptures or fusing enamel to the surface of metalware. It is a necessary facility in ceramic technology forming, and can complete physical and chemical reaction under the condition of a certain temperature and an air flame, so that the ceramic green glaze sintering device can form color and change thereof. The existing kiln design mostly adopts a direct discharge scheme, and the oxygen content of the directly discharged waste gas is up to 98%, so that huge waste of oxygen consumption is caused. Meanwhile, through direct discharge, the temperature of discharged waste gas is 200-300 ℃, so that waste of heat energy is caused, and the waste cannot be recycled. For this reason, we propose to design a kiln atmosphere internal and external circulation structure. Disclosure of utility model This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model. In order to solve the technical problems, according to one aspect of the present utility model, the following technical solutions are provided: The utility model provides a kiln atmosphere inner loop and outer circulation structure, includes the kiln main part, kiln main part top is provided with the induced air mouth, kiln main part top is provided with outer exhaust fan, outer exhaust fan air-out end fixedly connected with manifold, manifold middle part fixedly connected with outer exhaust valve, manifold tip fixedly connected with back flow, manifold bottom corresponds the switch-on has first filter, first filter outside is provided with the water-cooling condenser, the one end that first filter was kept away from to the water-cooling condenser is provided with the inner loop air exhauster, the inner loop air exhauster exhaust end corresponds the switch-on second filter, second filter exhaust end fixedly connected with air supply pipe, the air supply pipe outside is provided with the oxygen analyzer main part rather than corresponding, air supply pipe one end fixedly connected with oxygen pipe, common fixedly connected with float flowmeter between air supply pipe and the kiln main part. As a preferable scheme of the internal circulation and external circulation structure of the kiln atmosphere, the return pipe is correspondingly communicated with the kiln exhaust gas of the second burning kiln, and high-temperature waste gas can return to the kiln, so that the heating consumption of the kiln is reduced, and the loss of heat energy is reduced. As a preferable scheme of the kiln atmosphere internal circulation and external circulation structure, two first filters are arranged, the two first filter cores are stainless steel sintered filter screens, the filtering precision of the first filter is 1 mu, and dust in waste gas can be filtered conveniently. As a preferable scheme of the kiln atmosphere internal circulation and external circulation structure, two second filters are arranged, two second filter cores are tetrafluoroethylene filter cores, the filtering precision of the second filters is 0.01 mu, and the reflux gas is further filtered, so that the gas purity is improved, and impurity mixing is reduced. As a preferable scheme of the internal circulation and external circulation structure of the kiln atmosphere, the exhaust end of the first filter is communicated with the air inlet of the water-cooled condenser, the exhaust end of the internal circulation exhaust fan is communicated with the air outlet of the water-cooled condenser, and the exhaust end of the internal circulation exhaust fan is communicated with the air inlet end of the second filter, so that the exhaust gas is cooled and dedusted and then is led into the kiln again, thereby being convenient for reducing the consumption of oxygen in the production process and further reducing the production cost. As a preferable scheme of the internal circulation and external circulation structure of the kiln atmosphere, the bottom of the kiln main body is provided with a plurality of oxygen inlets, the oxygen inlets are correspondingly communicated with the air supply pipe, the bottoms of the oxygen inlets are provided with float flowmeters, and the float flowmeters adopt a high-temperature-resistant design, so that the flow of oxygen can be accurately regulated within 300 ℃, and the process requirement is met. Compared with the prior art, the utility model has the following benef