CN112146430A

CN112146430A - Expanded perlite ore preheating furnace with uniform preheating

Info

Publication number: CN112146430A
Application number: CN202011047362.8A
Authority: CN
Inventors: 董爽
Original assignee: Henan Shengfan Information Technology Co ltd
Current assignee: Henan Shengfan Information Technology Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2020-12-29

Abstract

The invention relates to an expanded perlite ore preheating furnace with uniform preheating, which adopts a preheating furnace structure combining an inner cylinder and an outer cylinder, and utilizes the principle that the temperature of the inner cylinder close to a heating pipe is high and the temperature of the outer cylinder is relatively low to preheat perlite ore to be preheated at low temperature firstly through the outer cylinder and then enter high temperature for deep preheating, in the preheating process, a main gear is utilized to drive a transition gear to be matched with an inner gear ring to lead a lead screw to revolve while rotating, so that materials in a fan-shaped cylinder are preheated while stirring, the preheating is uniform, meanwhile, the matching of a limiting groove and a limiting pin is utilized to lead a circular cylinder to complete transverse preheating while rotating, so that the materials in the circular cylinder are fully mixed and preheated, the preheating furnace has the advantages of ingenious structure, convenient use, uniform preheating, starting a two-stage preheating system and preheating from low temperature to high temperature, the whole preheating process is smooth and practical, and the preheating device is suitable for popularization and use.

Description

Expanded perlite ore preheating furnace with uniform preheating

Technical Field

The invention belongs to the technical field of perlite production equipment, and particularly relates to an expanded perlite ore preheating furnace capable of uniformly preheating.

Background

The expanded perlite is a natural acidic vitreous lava, a nonmetallic mineral product, and comprises perlite, pitchstone and obsidian, and the perlite, the pitchstone and the obsidian are different only in crystal water content. Since the volume of the expanded perlite is rapidly expanded by 4 to 30 times under the high temperature condition of 1000 to 1300 ℃, the expanded perlite is called as expanded perlite. Generally, the expansion factor is required to be 7 to 10 times (obsidian is 3 times, and can be used), and the silica content is about 70%. All are open pit mining. The ore dressing is not needed, and only the crushing and the screening are needed. The perlite needs to be preheated before expansion, the preheating temperature is between 250-300 ℃, the preheating lasts for about 8-10 minutes, the existing perlite ore preheating furnace directly enters the preheating furnace with the preheating temperature to preheat, certain change is caused to the internal performance of the perlite, the preheating process is rapid, the preheating effect and the preheating purpose cannot be achieved, meanwhile, the existing preheating furnace is low in preheating uniformity degree, the integral preheating effect cannot be achieved, and therefore the expanded perlite ore preheating furnace with uniform preheating is needed to solve the problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the expanded perlite ore preheating furnace for uniformly preheating, which is used for solving the problems in the background art.

The technical purpose of the invention is realized by the following technical scheme:

the preheating furnace for uniformly preheating expanded perlite ore comprises a support and is characterized in that the support is transversely provided with a preheating furnace, the preheating furnace is divided into an inner cylinder and an outer cylinder which are coaxially arranged, a heating pipe arranged on the support is transversely arranged in the inner cylinder, two ends of the heating pipe are connected with heaters arranged on the support, the heating pipe is externally rotatably connected with a rotary drum arranged in the inner cylinder, the outer side wall of the rotary drum is provided with two groups of spiral limiting grooves, the outer side of the rotary drum is coaxially provided with a cylinder which is in clearance fit with the inner wall of the inner cylinder, the inner wall of the rotary drum is connected with two groups of limiting pins matched with the corresponding limiting grooves, the requirement that the rotary drum is rotatably driven to rotatably and transversely move is met, annular plates arranged on the left side and the right side are rotatably connected between the inner cylinder and the outer cylinder, and two groups, the two groups of screw rods are matched with a sector cylinder which is intermittently matched with the inner wall of the outer cylinder in a threaded manner, one side wall of the sector cylinder facing the inner cylinder is connected with an electromagnetic switch, the rotary drum is coaxially connected with a main gear, the lead screw is coaxially connected with a transition gear meshed with the main gear, the inner wall of the outer cylinder is connected with an inner gear ring meshed with the two groups of transition gears, the main gear is driven to rotate by a driving motor arranged on the bracket, the left side and the right side of the lower end of the outer cylinder are respectively provided with an outer cylinder outlet, the left side and the right side of the upper end are provided with an outer cylinder inlet, the left side and the right side of the lower end of the inner cylinder are respectively provided with an inner cylinder outlet, the left side and the right side of the upper end are provided with an inner cylinder inlet, the two radial ends of the cylinder are respectively provided with a transition material port, the transition material ports are respectively provided with an electromagnetic switch, a material collecting port matched with the inlet of the outer cylinder is formed in one side wall of the fan-shaped cylinder, which is far away from the center;

a feeding device arranged on the bracket is connected above the two groups of outer cylinder inlets, so that the feeding device can feed materials to the two groups of outer cylinder inlets in sequence;

the annular plate is connected with a limit switch matched with the fan-shaped cylinder, and the limit switch, the electromagnetic switch, the driving motor and the feeding device are electrically connected with a controller installed on the support.

Preferably, the feeding device comprises a material collecting hopper transversely installed at the upper end of the support, the lower end of the material collecting hopper is fixedly communicated with two groups of fixed cylinders respectively arranged right above the inlet of the outer cylinder, the lower end of each fixed cylinder is communicated with the inlet end of the outer cylinder, a dividing disc is rotationally connected in the fixed cylinders, dividing holes which are arranged along the radial direction are uniformly distributed on the dividing disc along the circumferential direction, the dividing holes are matched with the inlet end of the outer cylinder, the dividing disc rotates and is coaxially connected with the output shaft of a forward and reverse motor installed on the support, and the forward and reverse motor is electrically connected with the controller.

Preferably, electromagnetic switch include the shutoff at a fan-shaped section of thick bamboo towards the sector plate on the central lateral wall, the sector plate carry out lateral shifting through the electric telescopic handle drive of installing on a fan-shaped section of thick bamboo, electric connection between electric telescopic handle and the controller, satisfy limit switch and receive the back that triggers and control electric telescopic handle through the controller and carry out work.

Preferably, the lower end of the bracket is provided with a collecting bin matched with the outlets of the two groups of outer cylinders.

Preferably, the transverse width of the outlet of the outer cylinder is larger than that of the outlet of the inner cylinder.

The invention has the beneficial effects that: the invention adopts a preheating furnace structure combining an inner cylinder and an outer cylinder, and utilizes the principle that the temperature of the inner cylinder close to a heating pipe is high and the temperature of the outer cylinder is relatively low to preheat perlite ore sand to be preheated at low temperature through the outer cylinder and then enter high temperature for deep preheating, and in the preheating process, a main gear drives a transition gear to be matched with an inner gear ring to lead a lead screw to revolve while rotating, so that the materials in a fan-shaped cylinder are preheated while stirring, the preheating is uniform, and meanwhile, the transverse preheating is completed while the circular cylinder rotates by utilizing the matching of a limiting groove and a limiting pin, so that the materials in the circular cylinder are fully mixed and preheated, the invention has the advantages of ingenious structure, convenient use and uniform preheating, and the whole preheating process is smooth by starting a two-stage preheating system and a preheating step from low temperature to high temperature, the practicality is strong, is fit for using widely.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a cross-sectional view of a front view of the present invention.

Fig. 4 is a perspective view showing a ring plate and its connection part according to the present invention.

Fig. 5 is a perspective view of the ring plate and its connection part in the present invention.

Fig. 6 is a perspective view of the cylinder of the present invention.

FIG. 7 is a perspective view of a preheating furnace according to the present invention.

Fig. 8 is a perspective view of the index plate of the present invention.

In the figure, 1, a bracket; 2. preheating a furnace; 3. an inner barrel; 4. an outer cylinder; 5. heating a tube; 6. a heater; 7. a rotating drum; 8. a limiting groove; 9. a cylinder; 10. a spacing pin; 11. an annular plate; 12. a lead screw; 13. a sector cylinder; 14. a main gear; 15. a transition gear; 16. an inner gear ring; 17. a drive motor; 18. an outer barrel outlet; 19. an inlet of the outer cylinder; 20. an outlet of the inner cylinder; 21. an inlet of the inner cylinder; 22. a transition material port; 23. a material collecting port; 24. a collection hopper; 25. a fixed cylinder; 26. an index plate; 27. indexing holes; 28. a positive and negative rotation motor; 29. a sector plate; 30. an electric telescopic rod; 31. and collecting the bin.

Detailed Description

The following description of the present invention will be made in detail with reference to the accompanying drawings 1 to 8.

The embodiment I is characterized in that a preheating furnace 2 is transversely installed on the support 1, the preheating furnace 2 is divided into an inner cylinder 3 and an outer cylinder 4 which are coaxially installed, a heating pipe 5 installed on the support 1 is transversely arranged in the inner cylinder 3, two ends of the heating pipe 5 are connected with heaters 6 installed on the support 1, a heating wire is arranged in the heating pipe 5 by adopting an electric heating method, the heating pipe 5 is externally rotatably connected with a rotary drum 7 arranged in the inner cylinder 3, the rotary drum 7 is rotatably connected with a bearing through a part of which two ends are not provided with the heating pipe 5, two groups of spiral limiting grooves 8 are formed in the outer side wall of the rotary drum 7, the limiting grooves 8 are arranged in a large-pitch thread manner, a cylindrical drum 9 which is in clearance fit with the inner wall of the inner cylinder 3 is coaxially arranged outside the rotary drum 7, the outer wall of the cylinder 9 is tightly attached to the inner wall of the inner cylinder 3, the inner wall of the rotary cylinder 7 is connected with two sets of limiting pins 10 matched with corresponding limiting grooves 8, the requirement that the rotary cylinder 7 rotates to drive the cylinder 9 to perform rotary transverse movement is met, the rotary cylinder 7 rotates, the cylinder 9 performs rotary transverse movement along the path of the limiting grooves 8 due to the matching of the limiting pins 10 and the limiting grooves 8, and therefore perlite in the cylinder 9 can be uniformly mixed and heated, the inner cylinder 3 and the outer cylinder 4 are rotatably connected with annular plates 11 arranged on the left side and the right side, two sets of lead screws 12 are rotatably connected between the annular plates 11, the lead screws 12 can rotate relative to the annular plates 11 while rotating around the rotary cylinder 7 along with the annular plates 11, the two sets of lead screws 12 are in threaded fit with a fan-shaped cylinder 13 intermittently matched with the inner wall of the outer cylinder 4, and, the side wall of the fan-shaped cylinder 13 facing the inner cylinder 3 is connected with an electromagnetic switch which can open and close a material opening on the side wall of the fan-shaped cylinder 13 facing the center, the rotary cylinder 7 is coaxially connected with a main gear 14, the screw 12 is coaxially connected with a transition gear 15 engaged with the main gear 14, the inner wall of the outer cylinder 4 is connected with an inner gear ring 16 engaged with two sets of transition gears 15, the main gear 14, the transition gear 15 and the inner gear ring 16 form a planetary gear train, the transition gear 15 can rotate while driving the annular plate 11 to rotate, the main gear 14 is driven to rotate by a driving motor 17 arranged on the bracket 1, the left side and the right side of the lower end of the outer cylinder 4 are respectively provided with an outer cylinder outlet 18, the outer cylinder outlet 18 is used for discharging materials flowing out of the cylinder 9, the left side and the right side of the upper end are provided with outer cylinder inlets 19, and the outer cylinder inlets 19 are, the left side and the right side of the lower end of the inner cylinder 3 are respectively provided with an inner cylinder outlet 20, the left side and the right side of the upper end are provided with inner cylinder inlets 21, the inner cylinder inlets 21 are used for enabling the material flow in the fan-shaped cylinder 13 to enter the circular cylinder, the radial two ends of the cylinder 9 are respectively provided with a transition material port 22, the transition material ports 22 are respectively provided with an electromagnetic switch (not shown in the figure), and one side wall of the fan-shaped cylinder 13, which is far away from the center, is provided with a material collecting port 23 matched with the outer cylinder inlet 19;

a feeding device arranged on the bracket 1 is connected above the two groups of outer cylinder inlets 19, so that the feeding device can feed materials to the two groups of outer cylinder inlets 19 in sequence;

the annular plate 11 is connected with a limit switch matched with the fan-shaped cylinder 13, the limit switch, the electromagnetic switch, the driving motor 17 and the feeding device are all electrically connected with a controller arranged on the bracket 1, when the device is used, the feeding device can sequentially and intermittently feed the inlet 19 end of the outer cylinder under the action of the controller, when the inlet 19 of the outer cylinder at one end enters perlite materials, the materials enter the fan-shaped cylinder 13 through the material collecting port 23, the electromagnetic switch is in a closed state at the moment, the driving motor 17 is started through the controller, the driving motor 17 drives the main gear 14 to work at the moment, the transition gear 15 revolves while rotating, thereby driving the fan-shaped plate 29 to move transversely between the inner cylinder and the outer cylinder 4, simultaneously, the annular plate 11 rotates around the outer cylinder 3 along with the annular plate 11, and the cylinder 9 is driven by the rotary cylinder 7, the cylinder 9 is driven to move spirally through the matching of the limiting groove 8 and the limiting pin 10, so that the material flow in the cylinder 9 is fully preheated at high temperature, the material flow in the fan-shaped cylinder 13 is fully preheated at low temperature in a transition mode, when the material flow moves to the other end, the driving motor 17 is turned off, the fan-shaped cylinder 13 triggers the limiting switch on the corresponding side to turn on the electromagnetic switch on the fan-shaped plate 29 through triggering, the material enters the cylinder 9 from the feed opening through the transition material opening 22, the electromagnetic switch on the transition hopper on the lower side is in a turn-off state, after the material completely enters the cylinder 9, the electromagnetic switch on the fan-shaped cylinder 13 is turned off under the action of the controller, the feeding device conveys the material into the fan-shaped cylinder 13 on the corresponding side under the action of the controller, and then the driving motor 17 is driven to rotate reversely through the controller, so that the cylinder 9 and the fan-shaped cylinder 13 move reversely, when the material preheating device is moved to the starting end, the electromagnetic valve at the lower end of the cylinder 9 on the corresponding side is triggered to be opened through the limit switch, the preheated material flows out through the outer cylinder outlet 18, after the material flows out, the controller controls the material to be closed, the electromagnetic switch on the fan-shaped cylinder 13 is controlled to be opened at the same time, the material enters the cylinder 9 through the material collecting port 23, the preheating work is completed by analogy in sequence, because the temperature of the part close to the heating pipe 5 is higher, the temperature of the part far away from the heating pipe 5 is relatively lower, the fan-shaped cylinder 13 is adopted to primarily heat the preheated material, and then the preheated material enters the circular cylinder to be deeply preheated, the whole preheating process is fully mixed, the.

In the second embodiment, on the basis of the first embodiment, the feeding device includes a material collecting hopper 24 transversely installed at the upper end of the support 1 and used for temporarily storing the material to be preheated, the lower end of the material collecting hopper 24 is fixedly communicated with two groups of fixed cylinders 25 respectively placed right above the outer cylinder inlet 19, the lower end of the fixed cylinder 25 is communicated with the end of the outer cylinder inlet 19, the fixed cylinder 25 is rotatably connected with an index plate 26, the index plate 26 is uniformly provided with index holes 27 radially arranged along the circumferential direction, the index holes 27 are matched with the end of the outer cylinder inlet 19, the rotation of the index plate 26 is coaxially connected with the output shaft of a forward and reverse motor 28 installed on the support 1, the forward and reverse motor 28 is electrically connected with the controller, the index holes 27 can temporarily store the material in the material collecting hopper 24, once the forward and reverse motor 28 drives the index plate 26 to rotate, the corresponding indexing hole 27 is positioned right above the inlet 19 of the outer cylinder, and the materials in the indexing hole smoothly enter the preheating furnace 2 for heating, thereby achieving the purpose of intermittent feeding.

In the third embodiment, on the basis of the first or second embodiment, the electromagnetic switch comprises a sector plate 29 blocked on one side wall of the sector cylinder 13 facing the center, the sector plate 29 is driven by an electric telescopic rod 30 installed on the sector cylinder 13 to move transversely, and the electric telescopic rod 30 is electrically connected with the controller, so that the purpose of opening and closing the sector plate 29 by controlling the electric telescopic rod 30 to work through the controller after the limit switch is triggered is achieved.

In the fourth embodiment, on the basis of the first embodiment, the collecting bin 31 matched with the two groups of outer cylinder outlets 18 is installed at the lower end of the support 1, and the collecting bin 31 is used for collecting the preheated materials.

In the fifth embodiment, on the basis of the first embodiment, the transverse width of the outer cylinder outlet 18 is greater than the transverse width of the inner cylinder outlet 20, so that the material can smoothly flow out from the outer cylinder outlet 18.

When the invention is used, when the preheating is needed, the heater 6 is turned on to a specified temperature, then the feeding device can sequentially and intermittently feed the inlet 19 end of the outer cylinder under the action of the controller, when perlite materials enter the inlet 19 of the outer cylinder at one end, the materials enter the fan-shaped cylinder 13 through the material collecting port 23, the electromagnetic switch is in a closed state, the driving motor 17 is turned on through the controller, the driving motor 17 drives the main gear 14 to work, the transition gear 15 revolves while rotating, so that the fan-shaped plate 29 is driven to transversely move between the inner cylinder and the outer cylinder 4, simultaneously, the circular plate 11 rotates around the outer cylinder 3, and simultaneously, the circular cylinder 9 is driven by the rotary cylinder 7 to spirally move through the matching of the limiting groove 8 and the limiting pin 10, so that the logistics in the circular cylinder 9 are fully preheated at a high temperature, the material flow in the fan-shaped cylinder 13 is fully preheated in a transition mode at low temperature, when the material flow moves to the other end, the driving motor 17 is closed, the limit switch on the corresponding side is triggered by the fan-shaped cylinder 13, the electromagnetic switch on the fan-shaped plate 29 is triggered to be opened, the material enters the cylinder 9 from the feed opening through the transition material opening 22, the electromagnetic switch at the transition hopper at the lower side is in a closed state, after the material completely enters the cylinder 9, the electromagnetic switch on the fan-shaped cylinder 13 is closed under the action of the controller, the feeding device conveys the material into the fan-shaped cylinder 13 at the corresponding side under the action of the controller, then the driving motor 17 is driven by the controller to rotate reversely, so that the cylinder 9 and the fan-shaped cylinder 13 move in a reverse spiral mode, when the material flow moves to the starting end, the electromagnetic valve at the lower end of the cylinder 9 at the corresponding side is triggered to be opened through the limit switch, and, after the outflow, it is closed in the controller control, and electromagnetic switch on the fan-shaped section of thick bamboo 13 of simultaneous control opens, and the material is in the collecting port 23 enters into drum 9, analogizes in proper order and accomplishes the work of preheating, because the partial temperature that is close to heating pipe 5 is higher, and the partial temperature of keeping away from heating pipe 5 is lower relatively, adopts fan-shaped section of thick bamboo 13 to carry out primary heating to preheating the material, then enters into the circular cylinder in and carries out the degree of depth and preheat, whole preheating process intensive mixing, and the heating is even, and the practicality is strong, is fit for.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The preheating furnace for uniformly preheating expanded perlite ore comprises a support (1) and is characterized in that a preheating furnace (2) is transversely installed on the support (1), the preheating furnace (2) is divided into an inner cylinder (3) and an outer cylinder (4) which are coaxially installed, a heating pipe (5) installed on the support (1) is transversely arranged in the inner cylinder (3), two ends of the heating pipe (5) are connected with heaters (6) installed on the support (1), the heating pipe (5) is externally rotatably connected with a rotary cylinder (7) arranged in the inner cylinder (3), two groups of spiral limiting grooves (8) are formed in the outer side wall of the rotary cylinder (7), a cylindrical cylinder (9) in clearance fit with the inner wall of the inner cylinder (3) is coaxially arranged outside the rotary cylinder (7), and two groups of limiting pins (10) matched with the corresponding limiting grooves (8) are connected to the inner wall of the rotary cylinder (7), the rotary drum type transverse movement device is characterized in that a rotary driving cylinder (9) of a rotary drum (7) performs rotary transverse movement, annular plates (11) arranged on the left side and the right side are rotatably connected between an inner drum (3) and an outer drum (4), two groups of lead screws (12) are rotatably connected between the two groups of annular plates (11), the two groups of lead screws (12) are in threaded fit with a fan-shaped drum (13) intermittently matched with the inner wall of the outer drum (4), the fan-shaped drum (13) is connected with an electromagnetic switch on one side wall facing the inner drum (3), the rotary drum (7) is coaxially connected with a main gear (14), the lead screws (12) are coaxially connected with a transition gear (15) meshed with the main gear (14), the inner wall of the outer drum (4) is connected with an inner gear ring (16) meshed with the two groups of transition gears (15), and the main gear (14) is driven to rotate by a driving motor (17, the left side and the right side of the lower end of the outer cylinder (4) are respectively provided with an outer cylinder outlet (18), the left side and the right side of the upper end are provided with an outer cylinder inlet (19), the left side and the right side of the lower end of the inner cylinder (3) are respectively provided with an inner cylinder outlet (20), the left side and the right side of the upper end are provided with inner cylinder inlets (21), the two radial ends of the cylinder (9) are respectively provided with a transition material port (22), the transition material port (22) is respectively provided with an electromagnetic switch, and one side wall of the fan-shaped cylinder (13) far away from the center is provided with a material collecting port (23;

a feeding device arranged on the bracket (1) is connected above the two groups of outer cylinder inlets (19) to meet the requirement that the feeding device feeds the two groups of outer cylinder inlets (19) in sequence;

the annular plate (11) is connected with a limit switch matched with the fan-shaped cylinder (13), and the limit switch, the electromagnetic switch, the driving motor (17) and the feeding device are electrically connected with a controller installed on the support (1).

2. The preheating furnace for preheating uniformly expanded perlite ore of claim 1, the feeding device comprises a collecting hopper (24) transversely arranged at the upper end of the bracket (1), the lower end of the collecting hopper (24) is fixedly communicated with two groups of fixed cylinders (25) which are respectively arranged right above the inlet (19) of the outer cylinder, the lower end of the fixed cylinder (25) is communicated with the end of the outer cylinder inlet (19), the fixed cylinder (25) is rotationally connected with an index plate (26), the indexing disc (26) is uniformly provided with indexing holes (27) which are arranged along the radial direction along the circumferential direction, the indexing hole (27) is matched with the end of the outer cylinder inlet (19), the indexing disc (26) rotates and is coaxially connected with an output shaft of a forward and reverse rotating motor (28) arranged on the bracket (1), and the forward and reverse rotating motor (28) is electrically connected with the controller.

3. The preheating furnace for preheating uniformly expanded perlite ore according to claim 1 or 2, characterized in that the electromagnetic switch comprises a sector plate (29) blocked on one side wall of the sector cylinder (13) facing the center, the sector plate (29) is driven by an electric telescopic rod (30) arranged on the sector cylinder (13) to move transversely, the electric telescopic rod (30) is electrically connected with a controller, and the requirement that the limit switch is triggered and then the electric telescopic rod (30) is controlled by the controller to work is met.

4. The preheating furnace for preheating uniformly expanded perlite ore according to the claim 1 is characterized in that the lower end of the bracket (1) is provided with a collection bin (31) matched with the two groups of outer barrel outlets (18).

5. The preheating furnace for preheating uniformly expanded perlite ore according to claim 1, characterized in that the transverse width of the outer drum outlet (18) is larger than the transverse width of the inner drum outlet (20).