Sectional temperature control type calcining furnace

Abstract

The utility model discloses a sectional temperature control type calcining furnace, which comprises a furnace body, the furnace body is connected with a mounting frame, the upper end of the furnace body is provided with a feed port, and the lower end of the furnace body is provided with a discharge port; the furnace body comprises a first furnace body, a second furnace body and a third furnace body, the arrangement positions of the first furnace body, the second furnace body and the third furnace body are gradually lowered at a time, the first furnace body, the second furnace body and the third furnace body are sequentially communicated, and valves are arranged in the connecting pipes; the upper end of the feeding hole is connected with a feeding mechanism; the feeding mechanism is arranged at the upper end of the side wall of the furnace body; the lower end of the furnace body is in a funnel shape, a discharging port is formed in the lowest position of the furnace body, the upper end of the discharging port is rotationally connected with a discharging mechanism, the lower end of the discharging port is connected with a discharging mechanism, and the discharging mechanism is connected with the lower end of the furnace body. And a heating layer is arranged in the wall surface of the furnace body. According to the utility model, hydroxyapatite with various crystal forms can be obtained at one time.

Description

Technical Field

[0001] The utility model belongs to the field of calcining equipment and relates to a segmented temperature-controlled calcining furnace. Background Art

[0002] Hydroxyapatite is currently recognized as a new type of ceramic material with good biocompatibility and osteoconductivity, that is, biosoluble. It is the main component of human and animal bones, teeth, and tusks. With the advancement of science and technology and the continuous improvement of people's understanding, many research results show that hydroxyapatite is a non-toxic, non-carcinogenic, non-side effect, and biocompatible bioactive material. People have also found that hydroxyapatite has solid alkaline properties and strong polymer exchange capacity. Therefore, it is widely used in catalytic carriers and polymer fields (industrial water and domestic water defluorination. At the same time, it can also have ion and temperature sensitivity, humidity sensitivity effects, and passivate heavy metal cadmium ions in soil improvement. Therefore, it is also a green, environmentally friendly, degradable material and intelligent material. It has better lipophilicity, hydrophilicity, and protein adsorbent. It is also used in different polymer plastic composites to resist high temperature, shear resistance, and increase mechanical strength. With the expansion of application fields, the requirements for its performance and product purity are becoming higher and higher. Hydroxyapatite is not a natural mineral, but mainly relies on artificial synthesis. In its production process, it needs to be calcined. The existing calcining furnace cannot obtain hydroxyapatite of multiple crystal forms at one time. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a segmented temperature-controlled calcining furnace, which can obtain hydroxyapatite of various crystal forms at one time.

[0004] The purpose of the utility model is achieved through the following technical solutions: a segmented temperature-controlled calcining furnace, comprising a furnace body, a mounting frame, a feed port and a discharge port, the furnace body is connected to the mounting frame, the upper end of the furnace body is provided with a feed port, and the lower end of the furnace body is provided with a discharge port; the furnace body comprises a first furnace body, a second furnace body and a third furnace body, the first furnace body is connected to the second furnace body, and the second furnace body is connected to the third furnace body; the setting positions of the first furnace body, the second furnace body and the third furnace body are gradually lowered at one time, and the lower end of the first furnace body is connected to the third furnace body through a connecting pipe. The upper end of the second furnace body is connected, and the lower end of the second furnace body is connected to the upper end of the third furnace body through a connecting pipe, and valves are provided in the connecting pipes; the upper end of the feed port is connected to a feed mechanism, and the feed mechanism is arranged at the upper end of the side wall of the furnace body; the lower end of the furnace body is funnel-shaped, and a discharge port is provided at the lowest point of the furnace body, the upper end of the discharge port is rotatably connected to a discharge mechanism, and the lower end of the discharge port is connected to a discharge mechanism, and the discharge mechanism is connected to the lower end of the furnace body; a heating layer is provided in the wall surface of the furnace body, and the heating layer is a resistance wire.

[0005] Through the above scheme, the purpose of segmented temperature control is achieved by setting up multiple furnace bodies, so that the calcination temperature is different and hydroxyapatite of different crystal forms is obtained. After the calcination is completed, the calcined hydroxyapatite is discharged through the discharging mechanism and the unloading mechanism for centralized collection.

[0006] Preferably, the top surfaces of the first furnace body, the second furnace body and the third furnace body are provided with the first furnace cover, the second furnace cover and the third furnace cover in sequence, and the middle parts of the first furnace cover, the second furnace cover and the third furnace cover are all connected with the unloading mechanism; the unloading mechanism includes a unloading motor, the output end of the unloading motor is connected with a rotating shaft, the lower end of the rotating shaft is connected with a spiral blade, and the spiral blade is arranged in the discharge port.

[0007] Through the above solution, the unloading motor drives the rotating shaft to rotate, and then drives the spiral blade to continuously bring out hydroxyapatite of different crystal forms in the furnace body, thereby preventing blockage during the discharge process.

[0008] Preferably, a first exhaust pipe is provided on the top surface of the first furnace cover, the top surface of the first furnace cover is connected to a second exhaust pipe, the second exhaust pipe is connected to the top surface of the second furnace cover, the top surface of the second furnace cover is connected to a third exhaust pipe, the third exhaust pipe is connected to the third furnace cover and the second furnace cover.

[0009] Through the above scheme, the arrangement of each exhaust pipe allows the heat in the higher temperature calcining furnace to be utilized to provide heat for the lower temperature calcining furnace, thereby reducing the heat consumption during the calcining process and reducing costs.

[0010] Preferably, a discharging mechanism is provided below the unloading mechanism, and the discharging mechanism includes a first connecting rod, the upper end of the first connecting rod is connected to the lower end of the furnace body, the lower end of the first connecting rod is rotatably connected to a hydraulic cylinder, the other end of the hydraulic cylinder is rotatably connected to a first connecting block, the first connecting block is connected to the bottom surface of a discharge pipe, the top surface of the discharge pipe is connected to a second connecting block, the other end of the second connecting block is rotatably connected to a second connecting rod, the upper end of the second connecting rod is connected to the bottom surface of the furnace body; a connecting hole is provided on the top surface of the discharge pipe, and the discharge pipe is provided above the connecting hole.

[0011] Through the above scheme, the powder discharged by the discharge mechanism is discharged into the corresponding collection device through the discharge pipe to prevent the powder from flying, and during the discharge process, the setting of the hydraulic cylinder prevents the powder from accumulating in the discharge pipe, so that the discharge is carried out smoothly.

[0012] Preferably, temperature sensors are provided on the bottom surfaces of the first furnace cover, the second furnace cover and the third furnace cover, and the temperature sensors are connected to a controller via electrical signals, and the controller is connected to the side wall of the mounting frame; the controller is connected to the unloading mechanism, the feeding mechanism, the heating layer and the discharging mechanism via electrical signals.

[0013] Through the above scheme, the temperature sensor is set to continuously monitor the temperature in the corresponding calcining furnace and adjust it at any time to keep the temperature in the corresponding furnace body at an appropriate temperature, so that the crystal form is consistent and easy to classify and use.

[0014] Preferably, the feeding mechanism includes a feeding box, a box cover is provided on the top surface of the feeding box, the side walls of the feeding box are connected to the side walls of the furnace body, a feeding motor is provided on the bottom surface of the feeding box, an auger is connected to the output end of the feeding motor, the auger is rotatably connected to the lower end of the feeding box, an inclined plate is provided below the auger, and the lower end of the inclined plate is connected to the feeding port.

[0015] Through the above solution, the feeding motor drives the auger to rotate, driving the hydroxyapatite to be calcined into the corresponding furnace body.

[0016] Preferably, the outer wall of the heating layer is provided with a heat-insulating layer, and the heat-insulating layer is arranged inside the wall surface of the furnace body.

[0017] Through the above scheme, the provision of the thermal insulation layer prevents heat loss and further reduces heat loss.

[0018] The utility model has the beneficial effects that: the utility model sets the temperature in stages, obtains hydroxyapatite of different crystal forms by calcining at one time, and achieves the purpose of controlling its hardness. In the calcining process, the heat is efficiently and practically utilized, the heat consumption is reduced, and the calcining cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the furnace body;

[0021] Figure 3 It is a structural schematic diagram of the discharge mechanism;

[0022] Figure 4 It is a structural schematic diagram of the feeding mechanism;

[0023] In the figure, 1-mounting frame, 2-first furnace body, 3-second furnace body, 4-third furnace body, 5-first exhaust pipe, 6-second exhaust pipe, 7-third exhaust pipe, 8-feeding mechanism, 801-feeding hopper, 802-auger, 803-inclined plate, 804-unloading motor, 9-discharging mechanism, 901-first connecting rod, 902-hydraulic cylinder, 903-first connecting block, 904-second connecting rod, 905-second connecting block, 906-discharging pipe, 907-connecting hole, 10-unloading mechanism, 101-unloading motor, 102-rotating shaft, 103-spiral blade, 11-temperature sensor, 12-controller. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present utility model is not limited to the following.

[0025] Example

[0026] like Figure 1-Figure 4As shown, a segmented temperature-controlled calcining furnace comprises a furnace body, a mounting frame 1, a feed port and a discharge port, wherein the furnace body is connected to the inner wall of the mounting frame 1, the upper end of the furnace body is provided with a feed port, and the lower end of the furnace body is provided with a discharge port; the furnace body comprises a first furnace body 2, a second furnace body 3 and a third furnace body 4, the first furnace body 2 is connected to the second furnace body 3, the second furnace body 3 is connected to the third furnace body 4, and the second furnace body 3 is arranged in the middle of the first furnace body 2 and the third furnace body 4; the arrangement positions of the first furnace body 2, the second furnace body 3 and the third furnace body 4 are gradually lowered in sequence, and the lower end of the first furnace body 2 is connected to the upper end of the second furnace body 3 through a connecting pipe The lower end of the second furnace body 3 is connected to the upper end of the third furnace body 4 through a connecting pipe, and a valve is provided in the connecting pipe; the upper end of the feed port is connected to a feeding mechanism 8, and the feeding mechanism 8 is vertically arranged. The feeding mechanism 8 is arranged at the upper end of the side wall of the furnace body, and the feeding mechanism 8 includes a feeding box 801, and a box cover is provided on the top surface of the feeding box 801. The side wall of the feeding box 801 is connected to the side wall of the furnace body, and a feeding motor is provided on the bottom surface of the feeding box 801. The output end of the feeding motor is connected to an auger 802, and the auger 802 is rotatably connected to the lower end of the feeding box 801. An inclined plate 803 is provided below the auger 802. The lower end of the inclined plate 803 is connected to the feed port; the lower end of the furnace body is funnel-shaped, and a discharge port is provided at the lowest point of the furnace body; the upper end of the discharge port is rotatably connected to a discharge mechanism 10, and the discharge mechanism 10 is connected to the furnace body; the lower end of the discharge port is connected to a discharge mechanism 9, and the discharge mechanism 9 is connected to the lower end of the furnace body; the discharge mechanism 9 includes a first connecting rod 901, which is vertically arranged, and the upper end of the first connecting rod 901 is connected to the lower end of the furnace body; the lower end of the first connecting rod 901 is rotatably connected to the upper end of a hydraulic cylinder 902, and the hydraulic cylinder 902 is tilted, and the lower end of the hydraulic cylinder 902 A first connecting block 903 is rotatably connected, and the first connecting block 903 is connected to the bottom surface of a discharge pipe 906. The top surface of the discharge pipe 906 is connected to a second connecting block 905. The other end of the second connecting block 905 is rotatably connected to a second connecting rod 904. The second connecting rod 904 is vertically arranged, and the upper end of the second connecting rod 904 is connected to the bottom surface of the furnace body; a connecting hole 907 is provided on the top surface of the discharge pipe 906, and the discharge pipe is provided above the connecting hole 907, and the discharge pipe 906 is inclined; a heating layer is provided inside the wall surface of the furnace body, and a thermal insulation layer is provided on the outer wall of the heating layer, and the thermal insulation layer is arranged inside the wall surface of the furnace body.

[0027] The top surfaces of the first furnace body 2, the second furnace body 3 and the third furnace body 4 are provided with the first furnace cover, the second furnace cover and the third furnace cover in sequence, and the middle parts of the first furnace cover, the second furnace cover and the third furnace cover are all connected with the unloading mechanism 10; the unloading mechanism 10 comprises an unloading motor 101, and the output end of the unloading motor 101 is connected with a rotating shaft 102, and the rotating shaft 102 is vertically arranged, and the lower end of the rotating shaft 102 is connected with a spiral blade 103, and the spiral blade 103 is arranged in the discharge port. The top surface of the first furnace cover is provided with a first exhaust pipe 5, and the top surface of the first furnace cover is connected with a second exhaust pipe 6, and the second exhaust pipe 6 is connected with the top surface of the second furnace cover, and the top surface of the second furnace cover is connected with a third exhaust pipe 7, and the third exhaust pipe 7 is connected with the third furnace cover and the second furnace cover. The bottom surfaces of the first furnace cover, the second furnace cover and the third furnace cover are provided with WZP-PT100 temperature sensors 11, and the temperature sensors 11 are connected to a controller 12 via a signal converter, and the controller 12 is connected to the side wall of the mounting frame 1; the controller 12 is connected to the unloading motor 101, the feeding motor, the heating layer and the hydraulic cylinder 902 via electrical signals.

[0028] In specific implementation, the box cover is opened, and the hydroxyapatite to be calcined is put into the feed box 801 as needed, and the feed motor is started to drive the auger 802 to rotate, so that it gradually enters the first furnace body 2, the second furnace body 3 and the third furnace body 4, and the heating layer is driven for heating. According to the needs, the temperature of the first furnace body 2 is set to 100-200°C, the temperature of the second furnace body 3 is set to 200-600°C, and the temperature of the third furnace body 4 is set to 600-1250°C. The temperature in the furnace body is detected at any time by the temperature sensor 11 to prevent the temperature from changing beyond the corresponding range. After the calcination is completed, the unloading motor 101 is started so that the spiral blade 103 discharges the calcined apatite from the furnace body, and the hydraulic cylinder 902 is started at the same time, so that the discharged apatite is smoothly discharged into the corresponding collection device. During the calcination process, the heat in the second furnace body 3 and the third furnace body 4 enters the first furnace body 2, reducing the demand for heat during the calcination process.

[0029] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A segmented temperature-controlled calcining furnace, comprising a furnace body, a mounting frame (1), a feed port and a discharge port, wherein the furnace body is connected to the mounting frame (1), the upper end of the furnace body is provided with a feed port, and the lower end of the furnace body is provided with a discharge port; characterized in that: The furnace body comprises a first furnace body (2), a second furnace body (3) and a third furnace body (4), the first furnace body (2) being connected to the second furnace body (3), and the second furnace body (3) being connected to the third furnace body (4); the first furnace body (2), the second furnace body (3) and the third furnace body (4) are arranged at positions which are gradually lowered at one time; the lower end of the first furnace body (2) is connected to the upper end of the second furnace body (3) through a connecting pipe, and the lower end of the second furnace body (3) is connected to the upper end of the third furnace body (4) through a connecting pipe, and valves are arranged in the connecting pipes; the upper end of the feed port is connected to a feed mechanism (8), and the feed mechanism (8) is arranged at the upper end of the side wall of the furnace body; the lower end of the furnace body is funnel-shaped, and a discharge port is arranged at the lowest point of the furnace body, the upper end of the discharge port is rotatably connected to a discharge mechanism (10), and the lower end of the discharge port is connected to a discharge mechanism (9), and the discharge mechanism (9) is connected to the lower end of the furnace body; a heating layer is arranged in the wall surface of the furnace body.

2. A staged temperature-controlled calcining furnace according to claim 1, characterized in that: The top surfaces of the first furnace body (2), the second furnace body (3) and the third furnace body (4) are provided with a first furnace cover, a second furnace cover and a third furnace cover in sequence, and the middle parts of the first furnace cover, the second furnace cover and the third furnace cover are all connected to the unloading mechanism (10); the unloading mechanism (10) comprises a unloading motor (101), the output end of the unloading motor (101) is connected to a rotating shaft (102), the lower end of the rotating shaft (102) is connected to a spiral blade (103), and the spiral blade (103) is arranged in the discharge port.

3. A staged temperature-controlled calcining furnace according to claim 2, characterized in that: A first exhaust pipe (5) is provided on the top surface of the first furnace cover, the top surface of the first furnace cover is connected to a second exhaust pipe (6), the second exhaust pipe (6) is connected to the top surface of the second furnace cover, the top surface of the second furnace cover is connected to a third exhaust pipe (7), the third exhaust pipe (7) is connected to the third furnace cover and the second furnace cover.

4. A staged temperature-controlled calcining furnace according to claim 2, characterized in that: A discharge mechanism (9) is provided below the unloading mechanism (10), and the discharge mechanism (9) comprises a first connecting rod (901), the upper end of the first connecting rod (901) is connected to the lower end of the furnace body, the lower end of the first connecting rod (901) is rotatably connected to a hydraulic cylinder (902), the other end of the hydraulic cylinder (902) is rotatably connected to a first connecting block (903), the first connecting block (903) is connected to the bottom surface of a discharge pipe (906), the top surface of the discharge pipe (906) is connected to a second connecting block (905), the other end of the second connecting block (905) is rotatably connected to a second connecting rod (904), the upper end of the second connecting rod (904) is connected to the bottom surface of the furnace body; the top surface of the discharge pipe (906) is provided with a connecting hole (907), and the discharge port is provided above the connecting hole (907).

5. The staged temperature-controlled calcining furnace according to claim 2, characterized in that: The bottom surfaces of the first furnace cover, the second furnace cover and the third furnace cover are provided with temperature sensors (11), and the temperature sensors (11) are connected to a controller via electrical signals. (12), the controller (12) is connected to the side wall of the mounting frame (1); the controller (12) communicates with the The unloading mechanism (10), the feeding mechanism (8) and the discharging mechanism (9) are connected.

6. The staged temperature-controlled calcining furnace according to claim 1, characterized in that: The feeding mechanism (8) comprises a feeding box (801), the top surface of the feeding box (801) is provided with a box cover, the side wall of the feeding box (801) is connected to the side wall of the furnace body, the bottom surface of the feeding box (801) is provided with a feeding motor, and the output end of the feeding motor is connected to an auger. (802), the auger (802) is rotatably connected to the lower end of the feed box (801), an inclined plate (803) is provided below the auger (802), and the lower end of the inclined plate (803) is connected to the feed port.

7. The staged temperature-controlled calcining furnace according to claim 1, characterized in that: The outer wall of the heating layer is provided with a heat-insulating layer, and the heat-insulating layer is arranged inside the wall surface of the furnace body.

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