Horizontal chlorination furnace

Abstract

The utility model relates to the technical field of quartz sand purification, in particular to a horizontal chlorination furnace which comprises a heating box body and a purification pipe arranged in the heating box body in a penetrating mode, the purification pipe is rotationally connected to the heating box body around the axis of the purification pipe, and the inner circumferential wall of the purification pipe is provided with spiral pieces which are continuously and spirally arranged in the axial direction; one end of the purification pipe is provided with a feed port communicated with the inner cavity, the other end of the purification pipe body is provided with a discharge port and a vent hole which are communicated with the inner cavity, and the heating box body is provided with a rotation driving device for driving the purification pipe to rotate. Quartz sand raw material particles enter the inner cavity of the purification pipe from the feeding port, hydrogen chloride reaction gas is injected from the vent hole, the rotary driving device drives the purification pipe to rotate around the axis of the purification pipe, the quartz sand raw material particles are driven by the spiral piece to change from linear motion to circular motion, and the reaction time in the heating box body is prolonged. Quartz sand raw material particles are continuously turned over and stirred by the spiral sheet, and the contact surface of hydrogen chloride and the quartz sand raw material particles is wider, so that the reaction is more sufficient.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of quartz sand purification, in particular to a horizontal chlorination furnace. BACKGROUND

[0002] Quartz sand is the main raw material for manufacturing quartz crucibles, and high-temperature chlorination is a common quartz sand impurity removal and purification method in the current quartz sand purification industry.

[0003] At present, quartz sand is purified through a horizontal chlorination furnace, the horizontal chlorination furnace comprises a heating box body and a chlorination purification pipe arranged in the heating box body to perform purification operation on quartz sand, hydrogen chloride gas is introduced into the chlorination purification pipe to fully react with alkali metal impurity ions in quartz sand raw material particles to generate chlorides. The content of impurity elements in quartz sand is related to whether the reaction is sufficient in the chlorination stage, and whether the reaction is sufficient mainly depends on the reaction time of quartz sand and hydrogen chloride gas in the high-temperature heating zone and the contact surface of quartz sand and hydrogen chloride, in the prior art, because the quartz sand raw material particles are in a stacked state, the contact surface of the quartz sand raw material particles and the hydrogen chloride gas is small, thereby leading to insufficient reaction, and therefore further improvement is needed. CONTENT OF THE UTILITY MODEL

[0004] In order to make the contact surface of hydrogen chloride and quartz sand raw material particles wider, the purpose of the application is to provide a horizontal chlorination furnace.

[0005] The horizontal chlorination furnace provided by the application adopts the following technical scheme:

[0006] A horizontal chlorination furnace comprises a heating box body and a purification pipe penetrating the heating box body, the purification pipe is rotationally connected to the heating box body around its own axis, the inner peripheral wall of the purification pipe has helical blades arranged continuously along the axis, one end of the purification pipe has a feeding port communicating with the inner cavity, the other end of the purification pipe body has a discharging port and a vent hole communicating with the inner cavity, and the heating box body is provided with a rotary driving device for driving the rotation of the purification pipe.

[0007] By adopting the above technical scheme, the quartz sand raw material particles enter the inner cavity of the purification pipe from the feeding port, the hydrogen chloride reaction gas is injected from the vent hole, the rotary driving device drives the rotation of the purification pipe around its own axis, the quartz sand raw material particles change from linear motion to circular motion under the driving of the helical blades, the time for the quartz sand raw material particles to react in the heating box body is prolonged, the helical blades continuously stir the quartz sand raw material particles, the contact surface of hydrogen chloride and the quartz sand raw material particles is wider, and therefore the reaction is more sufficient.

[0008] Preferably, the purification pipe comprises a straight pipe rotatably arranged in the heating box, a necked pipe coaxially connected to one end of the straight pipe and externally arranged in the heating box, the diameter of the necked pipe being smaller than that of the straight pipe, the straight pipe and the necked pipe being connected in a round corner smooth transition, the end of the necked pipe away from the straight pipe being detachably connected with a breather cover, the breather hole being arranged on the end face of the breather cover, the discharge port being arranged on the peripheral wall of the breather cover, the spiral blade being arranged on the inner peripheral wall of the straight pipe, and the feeding port being arranged on the end face of the straight pipe away from the necked pipe.

[0009] By adopting the above technical scheme, the straight pipe and the necked pipe are connected in a round corner smooth transition, reducing the risk of blockage. At the same time, the end of the necked pipe away from the straight pipe is detachably connected with a breather cover, the breather hole is arranged on the end face of the breather cover, and the discharge port is arranged on the peripheral wall of the breather cover, facilitating installation and maintenance.

[0010] Preferably, the opposite sides of the heating box are fixedly connected with support plates, the support plates are fixedly connected with support frames, one of the support frames is rotatably connected with driven support wheels abutting against the outer peripheral wall of the purification pipe, the driven support wheels are arranged at least in two, and the other support frame is rotatably connected with driving support wheels abutting against the outer peripheral wall of the purification pipe, the driving support wheels are arranged at least in two, and the rotary driving device is used for driving the driving support wheels to rotate.

[0011] By adopting the above technical scheme, by arranging the support plates and the support frames, the stability of the purification pipe during rotation is ensured, and damage to the equipment caused by vibration or imbalance is avoided. The design of the driven support wheels and the driving support wheels effectively disperses the weight and support force of the purification pipe, improving the reliability and safety of the equipment operation.

[0012] Preferably, flanges are fixedly sleeved on both ends of the purification pipe, limit ring grooves are arranged on the middle peripheral walls of the driven support wheels and the driving support wheels, and the peripheral walls of the flanges abut against the inner walls of the limit ring grooves.

[0013] By adopting the above technical scheme, the peripheral walls of the flanges abut against the inner walls of the limit ring grooves, which can effectively prevent the purification pipe from being axially deviated during rotation, ensure the stable operation of the purification pipe, and improve the reliability and safety of the equipment.

[0014] Preferably, the rotary driving device comprises a linkage shaft rotatably connected to the support frame and coaxially fixedly arranged in the driving support wheel, a driven sprocket coaxially fixedly sleeved on the linkage shaft, a driving motor fixedly connected to the support plate, a driving sprocket coaxially fixedly sleeved on the output shaft of the driving motor, and a transmission chain wound around the driving sprocket and the driven sprocket.

[0015] By adopting the above technical scheme, the driving motor drives the driving sprocket to rotate, the driving sprocket drives the driven sprocket to rotate through the transmission chain, and the driven sprocket drives the driving support wheel to rotate, thereby realizing the stable rotation of the purification pipe.

[0016] Preferably, the rack is further provided, and the discharge end of the heating box is hinged to one side of the rack, and the rack is provided with an inclination adjusting member for adjusting the inclination angle of the heating box.

[0017] By adopting the above technical scheme, the rack can stably support the heating box, and the inclination adjusting member can be used to flexibly adjust the inclination angle of the heating box, so as to change the flow speed of the quartz sand raw material particles in the purification pipe, optimize the reaction time and reaction condition, and improve the purification efficiency of the quartz sand.

[0018] Preferably, the inclination adjusting member is a telescopic arm, one end of the telescopic arm is hinged to the free end of the heating box, and the other end of the telescopic arm is hinged to the rack.

[0019] By adopting the above technical scheme, the telescopic arm can flexibly adjust the inclination angle of the heating box, so that the residence time of the quartz sand raw material particles in the purification pipe is more controllable, thereby ensuring that the hydrogen chloride gas and the quartz sand raw material particles are more uniformly and fully contacted, and the purification efficiency and product quality are improved.

[0020] Preferably, the inclination adjusting member comprises a support pipe and a support screw slidingly inserted into the support pipe, one end of the support pipe away from the support screw is hinged to the rack, the end of the support screw exposed to the support pipe is hinged to the free end of the heating box, a sleeve is coaxially and rotationally connected to the end of the support pipe, and the support screw is threadedly inserted into the sleeve.

[0021] By adopting the above technical scheme, the length of the support screw inserted into the inner cavity of the support pipe is adjusted by rotating the sleeve, so as to adjust the inclination angle of the heating box, and the threaded connection between the sleeve and the support screw makes the adjustment process more stable and reliable, and avoids the problems of equipment damage or inconvenient operation caused by improper adjustment.

[0022] Preferably, the inclination adjusting member is a pneumatic cylinder, the cylinder body of the pneumatic cylinder is hinged to the rack, and the piston rod of the pneumatic cylinder is hinged to the free end of the heating box.

[0023] By adopting the above technical scheme, the accurate inclination angle adjustment of the heating box under different working conditions can be realized by controlling the telescopic action of the pneumatic cylinder, so as to optimize the flow speed and residence time of the quartz sand in the purification pipe, ensure the sufficient contact and reaction of the quartz sand and the hydrogen chloride gas, and improve the purification efficiency.

[0024] In summary, the present application has the following beneficial effects:

[0025] 1. Quartz sand raw material particles enter the inner cavity of the purification tube through the feed inlet, and hydrogen chloride reaction gas is injected through the vent. The rotary drive device drives the purification tube to rotate around its own axis. Under the drive of the spiral blades, the quartz sand raw material particles change from linear motion to circular motion, extending the reaction time in the heating chamber. The spiral blades continuously tumble and stir the quartz sand raw material particles, and the contact area between hydrogen chloride and quartz sand raw material particles is wider, thus making the reaction more complete.

[0026] 2. The outer peripheral wall of the flange abuts against the inner wall of the limiting ring groove, which can effectively prevent the purification pipe from shifting axially during rotation, ensuring stable operation of the purification pipe and improving the reliability and safety of the equipment.

[0027] 3. The telescopic arm can flexibly adjust the tilt angle of the heating chamber, making the residence time of the quartz sand raw material particles in the purification tube more controllable, thereby ensuring more uniform and sufficient contact between hydrogen chloride gas and quartz sand raw material particles, improving purification efficiency and product quality. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a horizontal chlorination furnace;

[0029] Figure 2 This is a structural schematic diagram of the tilt adjustment component;

[0030] Figure 3 yes Figure 2 A magnified view of a portion at point A;

[0031] Figure 4 This is a structural schematic diagram of the flange and the driven support wheel;

[0032] Figure 5 This is a schematic diagram of the rotary drive device;

[0033] Figure 6 This is a schematic diagram of the internal structure of the purification tube.

[0034] In the diagram, 1. Frame; 2. Heating chamber; 21. Mounting port; 22. Support plate; 23. Support frame; 24. Driven support wheel; 25. Driven support wheel; 26. Limiting ring groove; 3. Purification pipe; 31. Straight pipe; 32. Narrowed pipe; 33. Flange; 34. Spiral blade; 35. Feed inlet; 36. Vent hood; 37. Air inlet pipe; 38. Discharge outlet; 4. Incline adjustment component; 41. Support pipe; 42. Support screw; 43. Screw sleeve; 5. Rotary drive device; 51. Linkage shaft; 52. Driven sprocket; 53. Drive motor; 54. Driven sprocket; 55. Transmission chain; 56. Tensioning sprocket. Detailed Implementation

[0035] The following is in conjunction with the appendix Figures 1-6The application is further described in detail.

[0036] The embodiment of the application discloses a horizontal chlorination furnace Figure 1 , comprising a rack 1, a heating box 2 arranged above the rack 1 and a purification pipe 3 penetrating through the heating box 2, in the embodiment, two purification pipes 3 are arranged and are distributed at intervals along the width direction of the heating box 2, the axial direction of the purification pipe 3 is parallel to the length direction of the heating box 2, and the heating box 2 is internally provided with a plurality of heating rods.

[0037] Referring to Figure 2 , Figure 3 The lower part of the discharge end of the heating box 2 is hinged to the upper end face of one side of the rack 1, the rack 1 is provided with an inclination adjusting piece 4 for adjusting the inclination angle of the heating box 2, so that the feeding end of the heating box 2 is higher than the discharge end of the heating box 2, the inclination adjusting piece 4 is a telescopic arm, one end of the telescopic arm is hinged to the free end of the heating box 2, and the other end of the telescopic arm is hinged to the rack 1. In the embodiment, the inclination adjusting piece 4 comprises a support pipe 41 and a support screw 42 slidingly inserted into the upper part of the support pipe 41, the lower end of the support pipe 41 is hinged to the rack 1, the end of the support screw 42 exposed to the support pipe 41 is hinged to the bottom surface of the feeding end of the heating box 2, the end of the support pipe 41 is coaxially and rotationally connected with a screw sleeve 43, and the support screw 42 is threadedly inserted into the screw sleeve 43. In other embodiments, the inclination adjusting piece 4 is a pneumatic cylinder, the cylinder body of the pneumatic cylinder is hinged to the rack 1, and the piston rod of the pneumatic cylinder is hinged to the bottom surface of the feeding end of the heating box 2.

[0038] Referring to Figure 4 , Figure 5 The discharge end and the feeding end of the heating box 2 are both provided with installation openings 21 for the penetration of the purification pipe 3, the opposite sides of the heating box 2 are both fixedly connected with support plates 22 located below the purification pipe 3, the support plates 22 are fixedly connected with support frames 23, one of the support frames 23 is rotationally connected with driven support wheels 24 abutting against the peripheral wall of the purification pipe 3, the two installation openings 21 are located between adjacent two driven support wheels 24, and the driven support wheels 24 are provided with at least two, in the embodiment, the driven support wheels 24 are provided with three and are distributed along the width direction of the heating box 2, and the purification pipe 3 is located between adjacent two driven support wheels 24. The other support frame 23 is rotationally connected with driving support wheels 25 abutting against the peripheral wall of the purification pipe 3, the driving support wheels 25 are provided with at least two, in the embodiment, the driving support wheels 25 are provided with three and are distributed along the width direction of the heating box 2, and the middle peripheral wall of the driven support wheel 24 and the driving support wheel 25 is both provided with a limiting ring groove 26.

[0039] The support frame 23 located on the feeding end side of the heating box 2 is equipped with a rotary drive device 5 for driving the active support wheel 25 to rotate. The rotary drive device 5 includes a linkage shaft 51 rotatably connected to the support frame 23 and coaxially fixedly passed through the active support wheel 25, a driven sprocket 52 coaxially fixedly sleeved on the linkage shaft 51, a drive motor 53 fixedly connected to the support plate 22, an active sprocket 54 coaxially fixedly sleeved on the output shaft of the drive motor 53, and a transmission chain 55 wound around the active sprocket 54 and the driven sprocket 52. The support frame 23 is rotatably connected to a tension sprocket 56 that meshes with the transmission chain 55.

[0040] Reference Figure 2 , Figure 6 The purification tube 3 includes a straight tube 31 that rotatably passes through the mounting port 21 and a constricted tube 32 coaxially connected to one end of the straight tube 31 and externally located at the discharge end of the heating chamber 2. The diameter of the constricted tube 32 is smaller than the diameter of the straight tube 31, and the straight tube 31 and the constricted tube 32 are smoothly connected with rounded corners. Flanges 33 externally located in the heating chamber 2 are fixedly fitted onto the outer peripheral walls of both ends of the straight tube 31, and the outer peripheral walls of the flanges 33 abut against the inner wall of the limiting annular groove 26. The inner peripheral wall of the straight tube 31 has spiral blades 34 arranged continuously along the axial direction, and the feed end of the straight tube 31 has a feed port 35 communicating with the inner cavity. A vent 36 is detachably connected to the end of the constricted tube 32 away from the straight tube 31. The vent 36 is a sleeve structure. In this embodiment, one end of the vent 36 is a closed end, and the other end is an open end. The open end of the vent 36 is threaded onto the end of the constricted tube 32. The closed end of the vent 36 has a vent hole communicating with the inner cavity. An air inlet pipe 37 passing through the vent hole is fixedly connected to the vent 36. The outer end of the air inlet pipe 37 is connected to an air injection device. An outlet 38 communicating with the inner cavity is opened on the outer peripheral wall of the vent 36.

[0041] The implementation principle of a horizontal chlorination furnace according to an embodiment of this application is as follows: Quartz sand raw material particles enter the inner cavity of the purification tube 3 through the feed inlet 35. Hydrogen chloride reaction gas is injected into the inner cavity of the purification tube 3 through the gas injection pipe. The drive motor 53 drives the drive sprocket 54 to rotate. The drive sprocket 54 drives the driven sprocket 52 to rotate through the transmission chain 55. The driven sprocket 52 then drives the drive support wheel 25 to rotate, thereby driving the purification tube 3 to rotate around its own axis. Under the drive of the spiral blades 34, the quartz sand raw material particles change from linear motion to circular motion, extending the reaction time in the heating chamber 2. The spiral blades 34 continuously tumble and stir the quartz sand raw material particles, resulting in a wider contact area between the hydrogen chloride and the quartz sand raw material particles, thus making the reaction more complete. The length of the support screw 42 inserted into the inner cavity of the support tube 41 can be adjusted by rotating the screw sleeve 43, thereby flexibly adjusting the tilt angle of the heating chamber 2, making the residence time of the quartz sand raw material particles in the purification tube 3 more controllable, thus ensuring more uniform and sufficient contact between the hydrogen chloride gas and the quartz sand raw material particles.

[0042] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A horizontal chlorination furnace characterized by: The utility model provides a kind of purification device, including heating box body (2) and the purification pipe (3) of being passed in heating box body (2), the purification pipe (3) is rotationally connected in heating box body (2) around its axis, the inner peripheral wall of purification pipe (3) has helical blade (34) being continuously helical arranged along axial direction, one end of the purification pipe (3) has the feed inlet (35) being communicated with inner cavity, the other end of purification pipe (3) body has the discharge port (38) being communicated with inner cavity and air hole, the heating box body (2) is provided with rotating drive device (5) of driving purification pipe (3) rotation;Still including rack (1), the discharge end of heating box body (2) is hinged to one side of rack (1), rack (1) is provided with inclination angle adjusting part (4) of adjusting inclination angle of heating box body (2), the inclination angle adjusting part (4) is telescopic arm, one end of telescopic arm is hinged to the free end of heating box body (2), the other end of telescopic arm is hinged to rack (1).

2. A horizontal chlorination furnace according to claim 1, characterized in that: The purification pipe (3) includes a straight pipe (31) rotationally passing through the heating box body (2) and a necked pipe (32) coaxially connected to one end of the straight pipe (31) and externally located in the heating box body (2), the diameter of the necked pipe (32) is smaller than the diameter of the straight pipe (31), the straight pipe (31) and the necked pipe (32) are connected with a smooth transition at a rounded corner, one end of the necked pipe (32) away from the straight pipe (31) is detachably connected with an air cover (36), the air hole is formed in the end face of the air cover (36), the discharge port (38) is formed in the outer peripheral wall of the air cover (36), and the helical blade (34) is arranged on the inner peripheral wall of the straight pipe (31). The feed inlet (35) is formed in the end face of the straight pipe (31) away from the necked pipe (32).

3. A horizontal chlorination furnace according to claim 1, characterized in that: The opposite sides of the heating box body (2) are fixedly connected with support plates (22), the support plates (22) are fixedly connected with support frames (23), one of the support frames (23) is rotationally connected with driven support wheels (24) abutting against the outer peripheral wall of the purification pipe (3), the driven support wheels (24) are provided at least in two, the other support frame (23) is rotationally connected with driving support wheels (25) abutting against the outer peripheral wall of the purification pipe (3), the driving support wheels (25) are provided at least in two, and the rotating drive device (5) is used for driving the driving support wheels (25) to rotate.

4. A horizontal chlorination furnace according to claim 3, characterized in that: The two ends of the purification pipe (3) are fixedly sleeved with flanges (33), the middle outer peripheral walls of the driven support wheels (24) and the driving support wheels (25) are formed with limiting ring grooves (26), and the outer peripheral walls of the flanges (33) abut against the inner walls of the limiting ring grooves (26).

5. A horizontal chlorination furnace according to claim 3, characterized in that: The rotating drive device (5) includes a linkage shaft (51) rotationally connected to the support frame (23) and coaxially fixedly passing through the driving support wheels (25), a driven sprocket (52) coaxially fixedly sleeved on the linkage shaft (51), a driving motor (53) fixedly connected to the support plate (22), a driving sprocket (54) coaxially fixedly sleeved on the output shaft of the driving motor (53), and a transmission chain (55) wound around the driving sprocket (54) and the driven sprocket (52).

6. A horizontal chlorination furnace according to claim 1, characterized in that: The inclination adjusting piece (4) comprises a support pipe (41) and a support screw rod (42) slidingly inserted into the support pipe (41), one end of the support pipe (41) away from the support screw rod (42) is hinged to the rack (1), the end of the support screw rod (42) exposed to the support pipe (41) is hinged to the free end of the heating box body (2), the end of the support pipe (41) is coaxially rotationally connected with a screw sleeve (43), and the support screw rod (42) is threadedly inserted into the screw sleeve (43).

7. A horizontal chlorination furnace as claimed in claim 1, characterized in that: The inclination adjusting piece (4) is a pneumatic cylinder, the cylinder body of the pneumatic cylinder is hinged to the rack (1), and the piston rod of the pneumatic cylinder is hinged to the free end of the heating box body (2).

Images