CN215598067U - Nano metal oxide calcining device - Google Patents

Abstract

The utility model discloses a nanometer metal oxide calcining device, which is characterized by comprising the following components: the device comprises a furnace body, a plate pushing trolley and a calcining pipe, wherein the plate pushing trolley can pass in and out of the furnace body, the calcining pipe is used for loading calcining materials and is rotatably installed on the plate pushing trolley, a transmission mechanism for driving the calcining pipe to rotate is further connected to the plate pushing trolley, and the transmission mechanism is connected with a power device positioned outside the furnace body. The utility model can ensure that the nano metal oxide is uniformly heated in the calcining process, and the plate pushing trolley can be taken out from the furnace body after the calcining finishing temperature is reduced to a certain degree, thereby accelerating the cooling rate.

Description

Nano metal oxide calcining device

Technical Field

The utility model relates to the technical field of calcinators, in particular to a calcinator for calcinating a nanoscale metal oxide product.

Background

The nano metal material is a novel material developed in the eighties of the last century, has unique performance and is an important direction for the development of the novel material. Can be applied to the aspects of high-performance ceramics, medicine, precision polishing, high-efficiency catalysts and the like according to different performances.

At present, the calcining equipment for the nano metal oxide material mainly adopts an electric heating furnace (comprising a common electric heating furnace, a trolley furnace or a split type electric heating furnace) and a rotary kiln or a rotary furnace for calcining, and the two types of equipment have the defects of uneven internal temperature of a furnace body, uneven heating of the nano metal oxide, easy overburning or insufficient calcining, further causing the grain diameter of crystal grains to exceed a control range and wide grain diameter distribution, and causing unstable product quality; meanwhile, because the contact area with air is small, the raw materials can not react completely in response to atmosphere requirements, so that the finished product contains partial incompletely-reacted raw materials, and the finished product rate is low; and after the calcination is finished, the temperature is mainly reduced in the furnace body, the space is closed, the temperature reduction is slow, and the production period is long.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a nano metal oxide calcining device which can uniformly heat a calcined material and is convenient for accelerating the temperature reduction.

In order to achieve the purpose, the utility model adopts the following technical scheme.

A nano metal oxide calcining apparatus, comprising: the device comprises a furnace body, a plate pushing trolley and a calcining pipe, wherein the plate pushing trolley can pass in and out of the furnace body, the calcining pipe is used for loading calcining materials and is rotatably installed on the plate pushing trolley, a transmission mechanism for driving the calcining pipe to rotate is further connected to the plate pushing trolley, and the transmission mechanism is connected with a power device positioned outside the furnace body.

In some embodiments, the furnace body comprises a heating device, a temperature control device and a gas input device, and an opening capable of freely controlling the opening and closing angle is formed in the top of the furnace body and used for exhausting gas.

In some embodiments, the furnace body adopts a box-type structure, the front surface of the furnace body is a furnace door, the lower end of the furnace body is sealed by connecting with the push pedal vehicle, and the other four surfaces of the furnace body are sealed; and the power input end of the transmission mechanism penetrates out of the bottom of the plate pushing trolley.

In some embodiments, the body of the pallet truck is a high-temperature-resistant heat-preservation piece, and a sealing piece is arranged between the body of the pallet truck and the furnace body; the high-temperature-resistant heat-preservation piece and the sealing piece are all one of a ceramic fiber cotton piece, a ceramic fiber plate piece, a refractory brick piece and a glass fiber plate piece.

In some embodiments, the transmission mechanism comprises a transmission gear mounted on the pallet truck and a transmission shaft penetrating through the pallet truck, the lower end of the transmission shaft is used for connecting a power device, and the upper end of the transmission shaft is connected with the transmission gear; and a gear meshed with the transmission gear is arranged on the calcining pipe.

In some embodiments, the drive shaft, the drive teeth, and the gear are all high temperature resistant pieces including graphite steel pieces and high alumina ceramic pieces.

In some embodiments, the calcining tube is in a cylindrical shape with two small ends and a large middle, and baffles are arranged at intervals in the calcining tube.

In some embodiments, a cart access device is connected to the cart, the cart access device provides a power source through a motor, and the cart is driven by a transmission mode such as a gear or a chain.

In some embodiments, heating wires are distributed on the cart.

The utility model has the beneficial effects that: the rotary calcining pipe and the transmission mechanism connected with the calcining pipe are arranged on the plate pushing cart, and in the calcining process, an external power device can drive the calcining pipe to rotate through the transmission mechanism, so that all parts of the calcining pipe are heated uniformly, the uniform heating of the nano metal oxide in the high-temperature calcining process is realized, the phenomenon of uneven grain size distribution of grains caused by uneven heating is avoided, and a product with uniform grain size is obtained; is widely applied to various nanometer metal oxide products, and the quality of the obtained nanometer powder is more stable and reliable. And the plate pushing trolley can be separated from the furnace body after the calcination finishing temperature is reduced to a certain degree, so that the cooling rate is accelerated, the operation is simple, the control is simple and convenient, and the method can be used for preparing high-quality nano metal oxide.

Drawings

FIG. 1 is a schematic structural diagram of a calcining apparatus provided by the present invention.

FIG. 2 is a cross-sectional view of a calcining apparatus provided in the present invention.

Reference numerals indicate the same.

1-furnace body.

2-pushing the plate vehicle.

3-quartz tube.

4-baffle plate.

5-gear.

Detailed Description

The following further describes embodiments of the present invention in conjunction with the drawings of the specification. The embodiments described below are exemplary and are intended to be illustrative of the utility model, but are not to be construed as limiting the utility model.

As shown in fig. 1 and 2, a nano metal oxide calcining apparatus includes: furnace body 1, push pedal car 2 and calcination pipe 3, the setting that can pass in and out of push pedal car 2 in the furnace body 1, it is used for loading and calcines the material and rotate and install to calcine pipe 3 go up the push pedal car 2 is last still to be connected with and orders about calcine 3 pivoted drive mechanism of pipe, drive mechanism with be located 1 outside power device of furnace body is connected.

The furnace body 1 comprises a heating device, a temperature control device and a gas input device, and is used for providing a high-temperature environment required by calcination and special requirements for special gas content, and an opening capable of freely controlling an opening and closing angle is formed in the top of the furnace body 1 and used for exhausting. Preferably, the furnace body 1 is heated by a silicon carbide rod, and the temperature is controlled by a thermocouple and a temperature controller. Thus, the calcining temperature is easy to adjust, accurate to control and wide in range, and can reach 1200 ℃ at most.

In this embodiment, the furnace body 1 preferably has a box structure, the front of which is a furnace door, the lower end of which is sealed by connecting with the pusher carriage 2, and the other four sides of which are sealed. And the power input end of the transmission mechanism penetrates out of the bottom of the plate pushing trolley 2. The body of the push plate vehicle 2 is preferably a high-temperature-resistant heat-preservation part. In particular, in order to ensure sealing performance between the body of the cart 2 and the furnace body 1, a seal is preferably provided between the body of the cart 2 and the furnace body 1. The high temperature resistant heat preservation piece and the sealing piece comprise but are not limited to ceramic fiber cotton, ceramic fiber board, refractory brick, glass fiber board and the like. The power device can be an electric motor, a pneumatic motor, a hydraulic motor and the like.

Obviously, according to different actual requirements, connecting holes can be arranged at the bottom, the top or the side wall of the furnace body 1. During actual connection, the plate pushing vehicle 2 can be pushed to a specific position of the furnace body 1 to enable the power input end of the transmission mechanism to correspond to the connecting hole, so that the connection between the transmission mechanism and an external power device can be realized; the present embodiment is not limited.

In this embodiment, the transmission mechanism includes a transmission gear mounted on the cart 2 and a transmission shaft penetrating through the cart 2, the lower end of the transmission shaft is used for connecting a power device, and the upper end of the transmission shaft is connected with the transmission gear; and a gear meshed with the transmission gear is arranged on the calcining pipe 3. The transmission shaft, the transmission gear and the gear are made of high-temperature resistant materials such as graphite steel, high-aluminum ceramics and the like.

The calcining tube 3 is preferably a quartz tube, and is high-temperature resistant and uniform in heat transfer. It should be noted that the calcination tube 3 in this embodiment serves to load and burn the calcination material, and it is obvious that a person skilled in the art may also use other high-temperature resistant tubes such as ceramic tubes instead of quartz tubes, and the present invention is not limited to this embodiment.

In this embodiment, the quartz tube is preferably a cylinder with two small ends and a large middle, and the two ends are connected with gears; a short baffle is arranged in the quartz tube to bring the nano metal oxide material to the upper end, and then the material is scattered under the action of gravity, so that the purposes of more dispersing the material and more fully contacting with gas are achieved.

In addition, the pushing plate vehicle 2 is also connected with a pushing plate vehicle in-out device, the pushing plate vehicle in-out device provides power source through a motor, and the pushing plate vehicle is driven by gears or chains. In order to achieve better heating and calcining effects, electric heating wires are preferably distributed on the plate pushing cart 2.

The working principle of the device for calcining nano metal oxide provided by the embodiment is as follows: 1) the raw materials to be calcined are placed into a calcining pipe 3, the calcining pipe 3 enters a furnace body 1 along with a plate pushing vehicle 2, a sealing strip is sealed, and a furnace door is closed. 2) The calcining temperature of the furnace body 1 is raised to 700 ℃ to 1000 ℃, taking the calcining cerium oxide nano powder as an example, gas is also input into the furnace body 1 through a gas input device during calcining, and the gas is exhausted through an opening at the top of the furnace; in the calcining process, the calcining tube 3 is driven to rotate by the power device, the nano metal oxide material rotates along with the calcining tube in the calcining tube, and continuously falls to the bottom from a high point under the action of gravity, so that the aim of fully contacting with gas in a dispersing way is fulfilled. Thus, the raw material powder can be heated uniformly, is fully contacted with gas, can be fully crystallized under the condition of high temperature, and reacts completely to obtain the nano cerium oxide with the required grain diameter. 3) After the calcining and sintering, the calcining pipe 3 is withdrawn from the furnace body 1 along with the plate pushing cart 2 for natural cooling, so that the cooling is accelerated, and the cooling speed is higher.

It will be appreciated by those skilled in the art from the foregoing description of construction and principles that the utility model is not limited to the specific embodiments described above, and that modifications and substitutions based on the teachings of the art may be made without departing from the scope of the utility model as defined by the appended claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.

Claims (9)

1. A nano metal oxide calcining apparatus, comprising: the device comprises a furnace body, a plate pushing trolley and a calcining pipe, wherein the plate pushing trolley can pass in and out of the furnace body, the calcining pipe is used for loading calcining materials and is rotatably installed on the plate pushing trolley, a transmission mechanism for driving the calcining pipe to rotate is further connected to the plate pushing trolley, and the transmission mechanism is connected with a power device positioned outside the furnace body.

2. The nano metal oxide calcining apparatus as claimed in claim 1, wherein the furnace body comprises a heating device, a temperature control device and a gas input device, and an opening capable of freely controlling the opening and closing angle is formed on the top of the furnace body for exhausting gas.

3. The nano metal oxide calcining device according to claim 1, wherein the furnace body adopts a box-type structure, the front side is a furnace door, the lower end is sealed by connecting with the pusher carriage, and the other four sides are sealed; and the power input end of the transmission mechanism penetrates out of the bottom of the plate pushing trolley.

4. The nano metal oxide calcining device according to claim 1, wherein the cart body of the cart is a high temperature resistant heat preservation member, and a sealing member is arranged between the cart body of the cart and the furnace body; the high-temperature-resistant heat-preservation piece and the sealing piece are all one of a ceramic fiber cotton piece, a ceramic fiber plate piece, a refractory brick piece and a glass fiber plate piece.

5. The nano metal oxide calcining device according to claim 1, wherein the transmission mechanism comprises a transmission gear installed on the pallet truck and a transmission shaft penetrating through the pallet truck, the lower end of the transmission shaft is used for connecting a power device, and the upper end of the transmission shaft is connected with the transmission gear; and a gear meshed with the transmission gear is arranged on the calcining pipe.

6. The nano metal oxide calcination device according to claim 5, wherein the transmission shaft, the transmission gear and the gear are all high temperature resistant members, and the high temperature resistant members comprise graphite steel members and high alumina ceramic members.

7. The nano-metal oxide calcination apparatus as claimed in claim 1, wherein the calcination tube is a cylindrical shape with two small ends and a large middle, and the inside of the calcination tube is provided with baffles at intervals.

8. The nano metal oxide calcining device as claimed in claim 1, wherein the plate pushing vehicle is connected with a plate pushing vehicle in-out device, the plate pushing vehicle in-out device provides a power source through a motor, and the plate pushing vehicle is driven by a gear or a chain.

9. The nano metal oxide calcination device according to claim 1, wherein heating wires are distributed on the cart.

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