Quartz sand calcining furnace with preheating effect

Abstract

The utility model discloses a quartz sand calcining furnace with a preheating effect, which comprises a calcining cylinder arranged on a supporting seat, the top of the calcining cylinder is communicated with a preheating hopper, the inner walls of the calcining cylinder and the preheating hopper are provided with electric heating wires, the bottom of the calcining cylinder is provided with a blanking hopper, a rotating shaft is arranged in the calcining cylinder, and the rotating shaft is connected with the preheating hopper. And a stirring rod and a stirring blade are fixed on the rotating shaft. According to the utility model, the preheating hopper, the calcining cylinder, the electric heating wire, the blanking hopper, the filter screen, the rotating shaft, the stirring rod and the stirring blade are arranged, and the cross sectional area of the preheating hopper is smaller, so that the quartz sand is easier to absorb heat when moving downwards, a good preheating effect is achieved, and then the quartz sand entering the calcining cylinder is turned and stirred under the action of the stirring blade; by means of the filter screen, pure quartz sand can be effectively separated out, the filter screen can be prevented from being blocked, the quartz sand can be promoted to pass through the filter screen, and thorough discharging of the quartz sand is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of quartz sand purification, in particular to a quartz sand calcining furnace with a preheating effect. Background Art

[0002] In the process of purifying quartz sand, in order to remove volatile components in quartz sand, including hydroxyl groups, etc., it is usually necessary to calcine the quartz sand at high temperature. The existing patent (Announcement No.: CN115978985B) discloses a quartz sand calcining turning mechanism and calcining device. The invention adopts a double-layer heating method. After the quartz sand calcined in the annular cavity between the outer cylinder and the inner cylinder is discharged, the preheated inner cylinder is sequentially filled into the annular cavity for continued calcination, which can preheat the quartz sand and improve the calcination efficiency. However, even if the invention designs a discharge port, because in the above technical solution, the outer cylinder and the inner cylinder are set to a horizontal type, in actual application, compared with vertical discharge, the above device is still slow in discharge, and it is easy to have incomplete discharge. For this reason, we propose a quartz sand calcining furnace with a preheating effect. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a quartz sand calcining furnace with a preheating effect.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A quartz sand calcining furnace with a preheating effect is designed, comprising a calcining cylinder arranged on a support seat, a mounting plate is fixed in the middle of the calcining cylinder, the mounting plate is connected to the support seat, a preheating bucket is connected to the top of the calcining cylinder, electric heating wires are arranged on the inner walls of the calcining cylinder and a lower hopper is arranged at the bottom of the calcining cylinder, a discharge pipe is connected to the bottom end of the lower hopper, a valve is installed on the discharge pipe, a rotating shaft connected to a motor transmission is arranged in the calcining cylinder, the bottom end of the preheating bucket is covered with a discharge plate fixed to the rotating shaft, a discharge port is arranged on one side of the discharge plate, a stirring rod is fixed on the rotating shaft above the discharge plate, and a stirring blade is fixed on the rotating shaft below the discharge plate.

[0006] In the above scheme, a pair of magnetic rings with opposite magnetism are stacked on the top of the calcining tube, the lower magnetic ring is fixed to the calcining tube, and the preheating bucket is installed in the upper magnetic ring.

[0007] In the above scheme, a cover plate is provided on the top of the preheating bucket, a positioning block is fixed on the bottom of the cover plate, a positioning groove is provided on the top of the preheating bucket to fit with the positioning block, and a movable groove for accommodating a rotating shaft is penetrated on the cover plate.

[0008] In the above scheme, the motor is mounted on a mounting plate, a bracket movably connected to the top of the rotating shaft is fixed on the mounting plate, and pulleys are installed on the output shaft of the motor and the rotating shaft.

[0009] In the above solution, a filter screen is connected to the inner top of the hopper.

[0010] In the above solution, a movable sleeve is sleeved near the bottom end of the rotating shaft, and the movable sleeve is fixed to the calcining cylinder through a support rod.

[0011] In the above solution, the stirring blade located at the bottom end of the rotating shaft abuts against the filter screen, and the stirring blade is arc-shaped.

[0012] The advantages and beneficial effects of the present utility model are as follows: By providing a preheating hopper, a calcining cylinder, heating wires, a hopper, a filter screen, a rotating shaft, a stirring rod, and a stirring blade, and using the heating wires as a heat source to provide sufficient heat in the preheating hopper and the calcining cylinder. By putting the quartz sand to be calcined into the preheating hopper, the quartz sand is first preheated in the preheating hopper. Compared with the prior art, since the cross-sectional area of the preheating hopper is small, the quartz sand is more likely to approach the heating wires and absorb heat as it moves downward, thus achieving a good preheating effect. Then the quartz sand gradually discharges from the preheating hopper into the calcining cylinder. The quartz sand entering the calcining cylinder is stirred by the stirring blade, so that the quartz sand at different positions can be fully calcined. Then the quartz sand falls on the filter screen in the hopper. The impurities mixed in the quartz sand are separated from the quartz sand under the action of the filter screen, and in cooperation with the stirring blade, the quartz sand and impurities on the surface of the filter screen are stirred. Compared with the prior art, not only can pure quartz sand be effectively separated, but also the blockage of the filter screen can be avoided, promoting the passage of quartz sand through the filter screen and facilitating the complete discharge of quartz sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic structural diagram of a quartz sand calcining furnace with a preheating effect proposed by the present utility model;

[0015] Figure 2 It is a schematic structural diagram of the preheating hopper of a quartz sand calcining furnace with a preheating effect proposed by the present utility model;

[0016] Figure 3 It is a schematic structural diagram of the cover plate of a quartz sand calcining furnace with a preheating effect proposed by the present utility model;

[0017] Figure 4Internal structure schematic diagram of a calcination furnace of a quartz sand calcination furnace with a preheating effect proposed by the present utility model;

[0018] Figure 5 Structural schematic diagram of a feeding hopper of a quartz sand calcination furnace with a preheating effect proposed by the present utility model.

[0019] In the figure: support base 1, calcination cylinder 2, mounting plate 3, feeding hopper 4, discharge pipe 5, valve 6, preheating hopper 7, stirring rod 8, discharge plate 9, discharge port 10, rotating shaft 11, heating wire 12, cover plate 13, moving groove 14, positioning block 15, positioning groove 16, stirring blade 17, movable sleeve 18, support rod 19, filter screen 20, support 21, magnetic ring 22, motor 23, pulley 24. Specific implementation manners

[0020] The following combines the accompanying drawings and embodiments to further describe the specific implementation manners of the present utility model. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0021] Please refer to Figures 1-5 , the present utility model provides a technical solution: a quartz sand calcination furnace with a preheating effect, including a calcination cylinder 2 arranged on a support base 1, a mounting plate 3 is fixed in the middle of the calcination cylinder 2, the mounting plate 3 is connected to the support base 1, a lifting mechanism can be arranged below the mounting plate 3, the movable end of the lifting mechanism is connected to the mounting plate 3, the lifting mechanism can be installed on the support base 1, by using the lifting mechanism, the height of the calcination cylinder 2 is indirectly adjusted to adapt to actual applications. A preheating hopper 7 is communicated at the top of the calcination cylinder 2, and the bottom end of the preheating hopper 7 is inserted into the top end of the calcination cylinder 2, so that quartz sand enters the calcination cylinder 2 through the preheating hopper 7;

[0022] Furthermore, a pair of magnetic rings 22 with opposite magnetisms are stacked on the top of the calcination cylinder 2, the lower magnetic ring 22 is fixed to the top end of the calcination cylinder 2, the preheating hopper 7 is installed in the upper magnetic ring 22, the surfaces of adjacent magnetic rings 22 are respectively coated with magnetic coatings with opposite magnetisms, and a jack fitting the preheating hopper 7 is arranged in the upper magnetic ring 22, and a mortise and tenon connection is provided between the inner wall of the jack and the outer wall of the preheating hopper 7, which is convenient for disassembly;

[0023] Heating wires 12 are fixedly arranged on the inner walls of both the calcination cylinder 2 and the preheating hopper 7. A feeding hopper 4 communicated with the calcination cylinder 2 is installed at the bottom of the calcination cylinder 2, the bottom end of the feeding hopper 4 is connected with a discharge pipe 5, and a valve 6 is installed on the discharge pipe 5. By controlling the opening and closing of the valve 6, the feeding of quartz sand is controlled. A rotating shaft 11 drivingly connected to a motor 23 is arranged in the calcination cylinder 2;

[0024] Furthermore, the motor 23 is installed on the mounting plate 3 through a mounting frame. A bracket 21 that is movably connected to the top end of the rotating shaft 11 is fixed on the mounting plate 3. The top end of the rotating shaft 11 is connected to the top of the bracket 21 through a bearing. Pulley 24 is installed on both the output shaft of the motor 23 and the rotating shaft 11. A belt is connected between adjacent pulleys 24. When the motor 23 is started, the output shaft of the motor 23 rotates, driving the pulley 24 on the output shaft to rotate, and then causing the pulley 24 and the rotating shaft 11 to rotate;

[0025] Furthermore, a cover plate 13 is provided at the top of the preheating hopper 7. A positioning block 15 is fixed to the bottom of the cover plate 13. A positioning groove 16 that fits the positioning block 15 is provided at the top of the preheating hopper 7. By using the positioning block 15 and the positioning groove 16, the cover plate 13 and the preheating hopper 7 are positioned and connected, which is not only convenient for disassembly but also facilitates quick installation. A moving groove 14 that can accommodate the rotating shaft 11 is provided through the cover plate 13, and a handle is installed on the top of the cover plate 13. By holding the handle, first lift the cover plate 13 upward, and then horizontally slide the cover plate 13, so that the cover plate 13 is separated from the preheating hopper 7 for feeding. When calcining, cover the cover plate 13 again to prevent other impurities from entering;

[0026] The bottom end of the preheating hopper 7 is covered with a discharge plate 9 that is coaxially fixed to the rotating shaft 11. A discharge port 10 is provided on one side of the discharge plate 9. A stirring rod 8 is fixed to the rotating shaft 11 above the discharge plate 9. The rotating shaft 11 drives the stirring rod 8 to rotate, stirring the quartz sand in the preheating hopper 7, so that the quartz sand fully absorbs heat. A stirring blade 17 is fixed to the rotating shaft 11 below the discharge plate 9. The rotating shaft 11 drives the stirring blade 17 to rotate, fully stirring the quartz sand in the calcining cylinder 2;

[0027] Furthermore, a filter screen 20 is connected to the inner top of the feeding hopper 4; the filter screen 20 is used to filter pure quartz sand and impurities;

[0028] Furthermore, the stirring blade 17 at the bottom end of the rotating shaft 11 abuts against the filter screen 20, and the stirring blade 17 is arc-shaped. The arc-shaped stirring blade 17 increases the contact area with the quartz sand, thereby further fully stirring the quartz sand;

[0029] Furthermore, a movable sleeve 18 is sleeved near the bottom end of the rotating shaft 11. The movable sleeve 18 is fixed to the inner wall of the calcining cylinder 2 through a support rod 19; in order to prevent the bottom end of the rotating shaft 11 from shaking greatly, the movable sleeve 18 and the support rod 19 are used to improve the stability of the rotating shaft 11, which is beneficial to the continuous operation of the rotating shaft 11;

[0030] Specifically, by setting up the preheating hopper 7, the calcination cylinder 2, the heating wire 12, the feeding hopper 4, the filter screen 20, the rotating shaft 11, the stirring rod 8, and the stirring blade 17, using the heating wire 12 as a heat source to provide sufficient heat in the preheating hopper 7 and the calcination cylinder 2. By putting the quartz sand to be calcined into the preheating hopper 7, the quartz sand is first preheated in the preheating hopper 7. Compared with the prior art, since the cross-sectional area of the preheating hopper 7 is smaller, the closer the quartz sand moves downward, the easier it is to get close to the heating wire 12, thereby absorbing heat and achieving a good preheating effect. Then the quartz sand gradually discharges from the preheating hopper 7 into the calcination cylinder 2. The quartz sand entering the calcination cylinder 2 is stirred by the stirring blade 17, so that the quartz sand at different positions can be fully calcined. Then the quartz sand falls on the filter screen 20 in the feeding hopper 4, and the impurities mixed in the quartz sand are separated from the quartz sand under the action of the filter screen 20. In cooperation with the stirring blade 17, the quartz sand and impurities on the surface of the filter screen 20 are stirred. Compared with the prior art, not only can pure quartz sand be effectively separated, but also the blockage of the filter screen 20 can be avoided, promoting the passage of quartz sand through the filter screen 20 and facilitating the complete discharge of quartz sand.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A quartz sand calcining furnace with a preheating effect, comprising a calcining tube (2) arranged on a support seat (1), characterized in that: A mounting plate (3) is fixed in the middle of the calcining tube (2), and the mounting plate (3) is connected to the support seat (1). A preheating hopper (7) is connected to the top of the calcining tube (2), and electric heating wires (12) are provided on the inner walls of the calcining tube (2) and the preheating hopper (7). A lower hopper (4) is installed at the bottom of the calcining tube (2), and a discharge pipe (5) is connected to the bottom end of the lower hopper (4), and a valve (6) is installed on the discharge pipe (5). A rotating shaft (11) connected to the motor (23) is provided in the calcining tube (2), and a discharge plate (9) fixed to the rotating shaft (11) is covered at the bottom end of the preheating hopper (7), and a discharge port (10) is provided on one side of the discharge plate (9). A stirring rod (8) is fixed on the rotating shaft (11) above the discharge plate (9), and a stirring blade (17) is fixed on the rotating shaft (11) below the discharge plate (9).

2. A quartz sand calcining furnace with preheating effect according to claim 1, characterized in that: A pair of magnetic rings (22) with opposite magnetic properties are stacked on the top of the calcining tube (2), the lower magnetic ring (22) is fixed to the calcining tube (2), and the preheating bucket (7) is installed in the upper magnetic ring (22).

3. The quartz sand calcining furnace with preheating effect according to claim 1, characterized in that: The top of the preheating bucket (7) is provided with a cover plate (13), the bottom of the cover plate (13) is fixed with a positioning block (15), the top of the preheating bucket (7) is provided with a positioning groove (16) that fits with the positioning block (15), and the cover plate (13) is penetrated by a movable groove (14) that can accommodate the rotating shaft (11).

4. The quartz sand calcining furnace with preheating effect according to claim 1, characterized in that: The motor (23) is mounted on a mounting plate (3), a bracket (21) movably connected to the top of the rotating shaft (11) is fixed on the mounting plate (3), and pulleys (24) are mounted on the output shaft of the motor (23) and the rotating shaft (11).

5. The quartz sand calcining furnace with preheating effect according to claim 1, characterized in that: The top of the lower hopper (4) is connected with a filter screen (20).

6. The quartz sand calcining furnace with preheating effect according to claim 1, characterized in that: A movable sleeve (18) is sleeved near the bottom end of the rotating shaft (11), and the movable sleeve (18) is fixed to the calcining cylinder (2) via a supporting rod (19).

7. The quartz sand calcining furnace with preheating effect according to claim 5, characterized in that: The stirring piece (17) located at the bottom end of the rotating shaft (11) is in contact with the filter screen (20), and the stirring piece (17) is arc-shaped.

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