A horizontal furnace for secondary purification of quartz sand

Abstract

The utility model relates to the technical field of quartz sand purification equipment, specifically a horizontal furnace for secondary purification of quartz sand, comprising an electric heating furnace body and a quartz tube, wherein a support frame is provided at the bottom of the electric heating furnace body, and the electric heating furnace body is obliquely installed on the support frame; the quartz tube is installed in the electric heating furnace body, and its two ends extend out of the electric heating furnace body, and the two ends of the quartz tube are respectively set as a feed port and a discharge port, and the feed port is arranged on a side of the furnace body with a higher inclined height, and the feed port and the discharge port of the quartz tube are provided with a first cover and a second cover which are not connected thereto, and the device further improves the purification effect of quartz sand.

Description

Technical Field

[0001] The utility model relates to the technical field of quartz sand purification equipment, in particular to a horizontal furnace used for secondary purification of quartz sand. Background Art

[0002] At present, quartz sand purification furnaces are mainly used to treat quartz sand at high temperatures to purify quartz sand and improve its physical and chemical properties.

[0003] The discharge device of the purification furnace will cause poor fluidity of the charge during discharge, which is prone to blockage, affecting the discharge speed and stability. In addition, during the discharge process, the discharge speed and stability cannot be controlled, and normal air intake cannot be protected, resulting in insufficient gas supply and insufficient contact with the quartz sand in the furnace body, resulting in low purity of the quartz sand.

[0004] At present, the feeding device of the quartz sand purification furnace is adapted to the requirements of high temperature and corrosion resistance. This leads to a high cost of the feeding device, which increases the cost of equipment procurement and maintenance. Due to the high temperature and corrosive environment, the maintenance and repair frequency is high. The design and size of the feeding device limit the feeding amount and feeding method. During the purification process, the feed cannot be dispersed in time, resulting in insufficient contact between the quartz sand and the purified gas during the reaction process. The contact time is short and the synchronous process of both feeding and exhausting cannot be completed, resulting in the impurities and dopants in the quartz sand cannot be effectively removed, resulting in reduced purity of the quartz sand, deterioration of physical properties, poor chemical reaction stability, and reduced quality of the products obtained later. Utility Model Content

[0005] The utility model aims to provide a horizontal furnace for secondary purification of quartz sand, so as to further improve the purification effect of quartz sand.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising an electric heating furnace body and a quartz tube, wherein a support frame is provided at the bottom of the electric heating furnace body, and the electric heating furnace body is obliquely installed on the support frame; the quartz tube is installed in the electric heating furnace body, and its two ends extend out of the electric heating furnace body, and the two ends of the quartz tube are respectively provided with a feed port and a discharge port, and the feed port is provided on a side of the furnace body with a higher inclined height, and the feed port and the discharge port of the quartz tube are provided with a first cover and a second cover which are not connected thereto,

[0007] A set of quartz flanges are respectively installed on the quartz tubes outside the furnace body, and the two sets of quartz flanges are respectively connected to driving devices, and the two driving devices synchronously drive the quartz tubes to rotate;

[0008] A second exhaust pipe is connected to the upper part of the second cover, a feed hole is provided below the second cover, a discharge pipe is connected to the feed hole, and a vent pipe penetrating the center of the second cover is provided on the central axis of the second cover.

[0009] The diameter of the tube body on one side of the quartz tube discharge port is gradually reduced to form a closed end, and a quartz tripod for fixing the ventilation pipe is arranged inside the quartz tube close to the discharge port.

[0010] Preferably, the driving device comprises a driving disk, and rotating wheels are clamped on the left and right sides below the driving disk, and the rotating wheels are driven by a motor.

[0011] Preferably, the quartz flanges are in a group of two, and the quartz flanges are formed by splicing together multiple pieces of block quartz, the surface of the block quartz is a frosted surface, the outer side of the quartz flange is wrapped with a metal ring, and one side of the metal ring is provided with bolt ears, the bolt ears are arranged opposite to each other in pairs, and the drive disk is fixed to the bolt ears by bolts.

[0012] Preferably, a lifting assembly is provided at the bottom of the electric heating furnace body, and the lifting assembly includes a screw, a nut, and a mounting block with a mounting hole. The mounting block is welded to the support frame, and the screw is installed at the bottom of the electric heating furnace body. The lower end of the screw passes through the mounting block and is fixed by a nut.

[0013] Preferably, the quartz tripod is provided with three legs, the outer ends of the legs are welded to the tube wall of the quartz tube, a mounting hole is provided in the middle of the quartz tripod, and the central axis of the mounting hole is in the same position as the central axis of the quartz tube.

[0014] Preferably, a first exhaust pipe is provided above the first sealing cover, and a feed pipe penetrating through the outer end of the first sealing cover is provided on the central axis of the first sealing cover.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The quartz tube of the device is provided with a first cover and a second cover at both ends. The covers are mounted on both ends of the quartz tube, which can prevent pollution during production and processing and do not affect the operation of the quartz tube at all. The exhaust holes above the covers can better collect and discharge the HCL gas effectively.

[0017] (2) The furnace body of the device is tilted, and the quartz sand can fall automatically. The quartz tube is rotated by a driving device. The quartz sand is continuously turned over during the rotation process to ensure the full reaction of the sand body. The first cover is provided with a feed pipe, which directly passes the quartz sand after the first purification into the quartz tube to avoid secondary pollution and waste in the secondary reaction process.

[0018] (3) A vent pipe is provided on the second cover, and a quartz tripod for fixing the vent pipe is provided inside the quartz tube near the discharge port. The quartz tripod is simple to install and can effectively improve the stability of the vent pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the driving device of the utility model;

[0021] Figure 3 This is a schematic diagram of the lifting assembly structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the first sealing cover structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the second sealing cover structure of the utility model;

[0024] Figure 6 It is a top view of the quartz flange of the utility model;

[0025] Figure 7 This is a top view of the quartz tripod of the utility model;

[0026] In the figure: 1. electric heating furnace body; 2. quartz tube; 3. support frame; 4. first cover; 401. first exhaust pipe; 402. feed pipe; 5. second cover; 501. second exhaust pipe; 502. discharge pipe; 503. ventilation pipe; 6. quartz flange; 601. metal ring; 602. bolt ear; 7. driving device; 701. driving disk; 702. rotating wheel; 703. motor; 8. quartz tripod; 801. support foot; 802. mounting hole; 9. lifting assembly; 901. screw; 902. mounting block; 903. nut. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 7 As shown, the utility model provides the following technical solutions:

[0029] The device comprises an electric heating furnace body 1 and a quartz tube 2. The quartz tube 2 has a total length of 3880 mm and a diameter of 200 mm. A support frame 3 is provided at the bottom of the electric heating furnace body 1. The electric heating furnace body 1 is tiltedly installed on the support frame 3. After the tilted installation, the automatic sliding of the quartz sand can be realized through the driving device provided in the device. The quartz tube 2 is installed in the electric heating furnace body 1, and its two ends extend out of the electric heating furnace body 1. The two ends of the quartz tube 2 are respectively set as a feed port and a discharge port. A circular baffle extending inward is provided in the feed circumference. The baffle has a diameter of 75 mm. The diameter of the tube body on one side of the discharge port of the quartz tube 2 gradually decreases to form a closed end. It is divided into a front end and a rear end according to the flow direction of the sand body. The front end diameter is 100 mm and the rear end diameter is 85 mm. A quartz tripod for fixing the ventilation pipe is provided in the quartz tube 2 near the discharge port. The quartz tripod is welded at a distance of 3380 mm from the feed port. The feed port is arranged on the side of the furnace body with a higher inclined height. The feed port and the discharge port of the quartz tube 2 are provided with a first cover 4 and a second cover 5 which are not connected to them.

[0030] It is worth noting that the electric heating furnace body 1 in this embodiment is an existing conventional technology and will not be described in detail here.

[0031] A group of quartz flanges 6 are respectively installed on the quartz tubes 2 outside the furnace body, and a group of quartz flanges 6 consists of two. The quartz flanges 6 are formed by splicing and assembling multiple pieces of block quartz. The surface of the block quartz is frosted, which effectively prevents the quartz tube 2 from sliding after being heated. The outer side of the quartz flange 6 is wrapped with a metal ring 601, and the metal ring tightly clamps the quartz flange 6. Bolt ears 602 are provided on one side of the metal ring 601, and the bolt ears 602 are arranged opposite to each other in pairs. The two groups of quartz flanges 6 are respectively connected to driving devices 7, and the two driving devices 7 synchronously drive the quartz tube 2 to rotate.

[0032] A first exhaust pipe 401 is provided above the first cover 4, a feed pipe 402 penetrating the outer end of the first cover 4 is provided on the central axis of the first cover 4, the feed pipe 402 extends into the quartz tube 2, a second exhaust pipe 501 is connected to the top of the second cover 5, a feed hole is provided below the second cover 5, a discharge pipe 502 is connected to the feed hole, a vent pipe 503 penetrating the center of the second cover 5 is provided on the central axis of the second cover 5, the gas added to the vent pipe is HCL gas; the first exhaust pipe 401 and the second exhaust pipe 501 are connected to an external collection tower to collect HCL waste gas.

[0033] The driving device 7 includes a driving disk 701 , and rotating wheels 702 are clamped on the left and right sides below the driving disk 701 . The rotating wheels 702 are driven by a motor 703 . The driving disk 701 is fixed to the bolt ears 602 by bolts.

[0034] A lifting assembly 9 is provided at the bottom of the electric heating furnace body 1, and the lifting assembly 9 includes a screw 901, a nut 903, and a mounting block 902 with a mounting hole. The mounting block 902 is welded to the support frame 3, and the screw 901 is hingedly installed at the bottom of the electric heating furnace body 1. The lower end of the screw 901 is set through the mounting block 902, and the screw 901 is fixed by a nut 903. The height of the screw is adjusted by screwing the nut. During actual use, different heights are screwed according to actual conditions, and the inclination angle generally does not exceed 30 degrees.

[0035] The quartz tripod 8 is provided with three legs 801 , the outer ends of the legs 801 are welded to the tube wall of the quartz tube 2 , and a mounting hole 802 is provided in the middle of the quartz tripod 8 , and the central axis of the mounting hole 802 is at the same position as the central axis of the quartz tube 2 .

[0036] When the device is in use, the heating furnace is first heated, and the vent pipe conveys HCL gas into the quartz tube. Then, the quartz sand after the primary purification is conveyed into the quartz tube through the feed pipe. There is a circle of quartz baffles around the feed port of the quartz tube to prevent the quartz sand from splashing out under the action of eccentricity. Since the electric heating furnace is tilted, the quartz sand will automatically fall after the quartz tube rotates. The driving device will keep turning the quartz sand during the process of driving the quartz tube to rotate, so as to better purify the quartz sand for the second time. The purified quartz sand is discharged along the discharge pipe under the second cover.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A horizontal furnace for secondary purification of quartz sand, characterized in that: The invention comprises an electric heating furnace body (1) and a quartz tube (2), wherein a support frame (3) is provided at the bottom of the electric heating furnace body (1), and the electric heating furnace body (1) is installed on the support frame (3) in an inclined manner; the quartz tube (2) is installed in the electric heating furnace body (1), and its two ends extend out of the electric heating furnace body (1); the two ends of the quartz tube (2) are respectively provided with a feed port and a discharge port, and the feed port is provided on a side of the furnace body with a higher inclined height; the feed port and the discharge port of the quartz tube (2) are provided with a first cover (4) and a second cover (5) which are not connected thereto, A set of quartz flanges (6) are respectively installed on the quartz tubes (2) outside the furnace body, and the two sets of quartz flanges (6) are respectively connected to driving devices (7), and the two driving devices (7) synchronously drive the quartz tubes (2) to rotate; A second exhaust pipe (501) is connected to the upper part of the second cover (5), a material discharge hole is provided at the lower part of the second cover (5), a material discharge pipe (502) is connected to the material discharge hole, and a vent pipe (503) penetrating the central part of the second cover (5) is provided on the central axis of the second cover (5). The diameter of the tube body of the quartz tube (2) on one side of the material outlet is gradually reduced to form a closed end, and a quartz tripod (8) for fixing the ventilation tube is provided inside the quartz tube (2) close to the material outlet.

2. A horizontal furnace for secondary purification of quartz sand according to claim 1, characterized in that: The driving device (7) comprises a driving disk (701), and rotating wheels (702) are clamped on the left and right sides below the driving disk (701), and the rotating wheels (702) are driven by a motor (703).

3. A horizontal furnace for secondary purification of quartz sand according to claim 2, characterized in that: The quartz flanges (6) are grouped into two pieces. The quartz flanges (6) are formed by splicing a plurality of block quartz. The surface of the block quartz is frosted. The outer side of the quartz flange (6) is wrapped with a metal ring (601). One side of the metal ring (601) is provided with bolt ears (602). The bolt ears (602) are arranged opposite to each other in pairs. The driving disk (701) is fixed to the bolt ears (602) by bolts.

4. A horizontal furnace for secondary purification of quartz sand according to claim 1, characterized in that: A lifting assembly is provided at the bottom of the electric heating furnace body (1), the lifting assembly comprising a screw (901), a nut (903), and a mounting block (902) with a mounting hole, the mounting block (902) being welded to a support frame (3), the screw (901) being mounted at the bottom of the electric heating furnace body (1), the lower end of the screw (901) passing through the mounting block (902), and the screw (901) being fixed by a nut (903).

5. A horizontal furnace for secondary purification of quartz sand according to claim 1, characterized in that: The quartz tripod (8) is provided with three legs (801), the outer ends of the legs (801) are welded to the tube wall of the quartz tube (2), and a mounting hole (802) is provided in the middle of the quartz tripod (8), and the central axis of the mounting hole (802) is at the same position as the central axis of the quartz tube (2).

6. A horizontal furnace for secondary purification of quartz sand according to claim 1, characterized in that: A first exhaust pipe (401) is provided above the first sealing cover (4), and a feed pipe (402) penetrating the outer end of the first sealing cover (4) is provided on the central axis of the first sealing cover (4).

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