Raw material mixing device for sodium silicate production

Abstract

The utility model belongs to the technical field of sodium silicate production equipment, and particularly discloses a raw material mixing device for sodium silicate production, which comprises a mixing bin, the top of the mixing bin is connected with a stirring and mixing mechanism and two feed hoppers, the bottom of the mixing bin is provided with a discharge port, and a dust collecting box covers the feed hoppers and is fixedly connected with the upper ends of the feed hoppers. The raw material conveying belt extends into the dust collection box through the preformed hole, a filter box is arranged at the top of the dust collection box, a filter filling layer is arranged in the filter box, the filter box communicates with an induced draft fan, and the output end of the induced draft fan communicates with an exhaust pipeline. According to the utility model, the dust collecting box is covered on the feeding hopper of the mixing device, and the induced draft fan is arranged, so that gas in the dust collecting box is sucked through the induced draft fan, and dust generated during feeding of raw materials for producing sodium silicate is prevented from escaping into the environment to cause a series of adverse effects; and the filter filling layer is arranged in the pipeline at the front end of the induced draft fan, and collected dust-containing gas is discharged after being filtered, so that secondary pollution to the environment due to direct discharge is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of sodium silicate production equipment, in particular to a raw material mixing device for sodium silicate production. Background Art

[0002] Sodium silicate, also known as sodium silicate, its aqueous solution is commonly known as sodium water glass, is a viscous liquid, mainly used in the manufacture of adhesives, fillers, chemical raw materials, preservatives and additives, etc. There are two production processes for the industrial preparation of sodium silicate, the dry process and the wet process. The dry process mostly uses the sodium carbonate method, that is, soda ash (sodium carbonate) and quartz sand (silicon dioxide) with a particle size of 60-80 mesh are mixed evenly in a certain proportion and sent into a kiln, melted at 1450-1500℃, and the high-temperature molten product flows out from the kiln outlet, and is pressed into shape by a mold to obtain block solid sodium silicate. Liquid sodium silicate is obtained after the solid sodium silicate is dissolved.

[0003] When preparing sodium silicate by the sodium carbonate method, it is necessary to first mix soda ash and quartz sand in proportion, and then use a feeding device to transport them to a mixing device for stirring. When feeding the existing mixing device, dust will float out of the mixing device, polluting the workshop environment and causing adverse effects on the health of operators in the workshop. Therefore, it is necessary to design a raw material mixing device for sodium silicate production that prevents dust from escaping outside the device when feeding. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a raw material mixing device for sodium silicate production which can prevent dust from escaping outside the device during feeding, so as to solve the problem that dust floats out of the mixing device, pollutes the workshop environment and affects the health of personnel.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a raw material mixing device for sodium silicate production, comprising a mixing bin and a raw material conveyor belt, a stirring and mixing mechanism is arranged inside the mixing bin, two feed hoppers are fixedly connected to the top of the mixing bin, and a discharge port is opened at the bottom, a dust box is fixedly connected to the upper end of the feed hopper, reserved holes are opened on both sides of the dust box, the raw material conveyor belt passes through the reserved holes, the discharge end of the raw material conveyor belt is located directly above the feed hopper, a filter box is fixedly connected to the top of the dust box through a pipeline, a filter filling layer is arranged in the filter box, an induced draft fan is connected to the upper end of the filter box, and an exhaust duct is connected to the output end of the induced draft fan.

[0006] Furthermore, the stirring and mixing mechanism includes a stirring motor and a stirring paddle. The stirring motor is fixedly connected to the top of the mixing bin. The stirring paddle is located in the mixing bin and fixedly connected to the output end of the stirring motor.

[0007] Furthermore, the filter filling layer is a microporous ceramic layer, a filter screen is fixedly connected inside the filter box, a microporous ceramic layer is filled above the filter screen, and the upper end of the filter box is detachably connected to the input end of the induced draft fan via a flange.

[0008] Furthermore, a cleaning brush is fixedly connected to the top of one side of the feed hopper close to the raw material conveyor belt.

[0009] Furthermore, a baffle is hinged at the bottom end of the feed hopper, a spring is hinged below the baffle, the other end of the spring is connected to a fixed plate, and the fixed plate is fixedly connected to the inner wall of the mixing bin.

[0010] Furthermore, a support frame is fixedly connected to the side of the mixing bin, and the top of the support frame is fixedly connected to the bottom of the dust collecting box.

[0011] Furthermore, the bottom of the mixing bin is fixedly connected with supporting legs.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model covers a dust collecting box on the feed hopper of the mixing device and installs an induced draft fan, and the induced draft fan continuously extracts the gas in the dust collecting box to prevent the dust generated when the raw materials for producing sodium silicate are fed into the environment and cause a series of adverse effects; a filter filling layer is arranged in the front end pipeline of the induced draft fan, and the collected dust-containing gas is filtered and treated before being discharged, so as to avoid direct discharge and secondary pollution of the environment.

[0014] 2. The utility model arranges a cleaning brush under the raw material conveyor belt to clean and brush away raw material powder residue adhering to the surface of the conveyor belt, thereby preventing the raw material powder residue from gradually accumulating along the conveyor belt during the conveying process and clogging or wearing the conveyor belt, thereby ensuring the cleanliness of the conveyor belt and reducing the failure rate of the conveyor belt; a baffle that can close the opening is arranged at the opening below the feed hopper, thereby preventing raw material powder from drifting into the dust box through the feed hopper when the device is not feeding but only stirring, thereby reducing the filtration burden of the filter filling layer and reducing the frequency of replacing the filter filling layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 for Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0017] Figure 3 for Figure 1 Schematic diagram of the enlarged structure at point B.

[0018] In the figure: 1. mixing bin, 2. feed hopper, 3. dust collecting box, 4. raw material conveyor belt, 5. filter box, 6. induced draft fan, 7. filter filling layer, 8. discharge port, 9. stirring motor, 10. stirring paddle, 11. cleaning brush, 12. fixing plate, 13. baffle, 14. support frame, 15. support leg. DETAILED DESCRIPTION

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] like Figures 1 to 3 A raw material mixing device for sodium silicate production shown in the figure comprises a mixing bin 1, in which a stirring and mixing mechanism is arranged, two feed hoppers 2 are fixedly connected to the top of the mixing bin 1, a discharge port 8 is provided at the bottom, a dust box 3 is provided on the upper cover of the feed hopper 2, the dust box 3 is fixedly connected to the upper end of the feed hopper 2, reserved holes are provided on both sides of the dust box 3, a raw material conveyor belt 4 is extended into the reserved holes and the discharge end of the raw material conveyor belt 4 is located directly above the feed hopper 2, a filter box 5 is fixedly connected to the top of the dust box 3, a filter filling layer 7 is arranged in the filter box 5, the filter box 5 is connected to an induced draft fan 6, and the induced draft fan 6 can extract the gas inside the dust box 3 to form a negative pressure when working. At this time, the reserved holes on the dust box 3 can act as an air inlet, and the output end of the induced draft fan 6 is connected to an exhaust duct to discharge the filtered gas.

[0021] In order to evenly mix the soda ash and quartz sand entering the mixing bin 1, the stirring and mixing mechanism includes a stirring motor 9 and a stirring paddle 10. The stirring motor 9 is fixedly connected to the top of the mixing bin 1, and the stirring paddle 10 is located in the mixing bin 1 and fixedly connected to the output end of the stirring motor 9.

[0022] In order to filter the gas containing dust, the filter filling layer 7 is a microporous ceramic layer, which can filter and remove dust. A filter screen is fixedly connected to the filter box 5, and a microporous ceramic layer is filled above the filter screen. The upper end of the filter box 5 is detachably connected to the input end of the induced draft fan 6 through a flange. When the microporous ceramic needs to be replaced, the flange connection can be removed and the filter filling layer 7 in the filter box 5 can be replaced.

[0023] In order to clean the raw materials adhering to the surface of the conveyor belt 4, a cleaning brush 11 is fixedly connected to the top of the side of the feed hopper 2 close to the raw material conveyor belt 4. The cleaning brush 11 is set at an angle, and the raw materials swept down by the brush fall into the feed hopper 2 along the inclined surface.

[0024] In order to prevent the raw material powder from floating into the dust collecting box 3 through the feed hopper 2 when the device is not feeding but only stirring, thereby increasing the filtering burden of the filtering filling layer 7, a baffle 13 is hingedly connected to the bottom end of the feed hopper 2 inside the mixing bin 1, and a connecting block is hingedly connected below the baffle 13, on which a spring is fixed, and the other end of the spring is connected to a fixing plate 12, and the inner end of the fixing plate 12 is fixedly connected to the inner wall of the mixing bin 1. When the spring is in its original length state, the baffle 13 is just in a horizontal position and blocks the lower opening of the feed hopper 2. When the raw material falls into the feed hopper 2 and contacts the baffle 13, the baffle 13 compresses the spring downward under the action of the raw material's gravity, and the baffle 13 rotates downward around the hinge point, and the raw material enters the mixing bin 1 from the opening. When the raw material is put in, the spring recovers its deformation, and the pop-up baffle 13 is in a horizontal position again to block the lower opening of the feed hopper 2 again, thereby preventing the dust in the mixing bin 1 from floating out from the opening of the feed hopper 2.

[0025] In order to increase the stability of the dust box 3 , a support frame 14 is fixedly connected to the side of the mixing bin 1 , and the top of the support frame 14 is fixedly connected to the bottom of the dust box 3 .

[0026] In order to improve the overall stability and safety of the device, a support leg 15 is fixedly connected to the bottom of the mixing bin 1.

[0027] The specific working process of the utility model is as follows:

[0028] The raw material conveyor belt 4 conveys soda ash and quartz sand to the top of the feed hopper 2 respectively, and the two raw materials enter the feed hopper 2 respectively. The raw materials press down the baffle 13 under the action of gravity, and the baffle 13 rotates downward to compress the spring, opening the opening to allow the raw materials to enter the mixing bin 1. The stirring motor 9 drives the stirring paddle 10 to rotate and stir and mix the two raw materials. Finally, the stirred and mixed raw materials are discharged from the mixing bin 1 through the discharge port 8.

[0029] During the feeding process, the generated dust is collected in the dust collecting box 3 under the action of the induced draft fan 6, and is discharged after being filtered out by the filter filling layer 7. When the microporous ceramic needs to be replaced, the flange connection can be removed. After the replacement is completed, the filter box 5 and the induced draft fan 6 are connected again through the flange. The cleaning brush 11 can clean and brush off the raw material powder adhered to the surface of the raw material conveyor belt 4 to avoid the accumulation of raw material powder on the raw material conveyor belt 4.

Claims

1. A raw material mixing device for sodium silicate production, comprising a mixing bin (1) and a raw material conveyor belt (4), wherein a stirring and mixing mechanism is arranged inside the mixing bin (1), two feed hoppers (2) are fixedly connected to the top of the mixing bin (1), and a discharge port (8) is provided at the bottom, characterized in that: The upper end of the feed hopper (2) is fixedly connected to a dust box (3), both sides of the dust box (3) are provided with reserved holes, the raw material conveyor belt (4) passes through the reserved holes, the discharge end of the raw material conveyor belt (4) is located directly above the feed hopper (2), the top of the dust box (3) is fixedly connected to a filter box (5) through a pipeline, a filter filling layer (7) is provided in the filter box (5), the upper end of the filter box (5) is connected to an induced draft fan (6), and the output end of the induced draft fan (6) is connected to an exhaust pipeline.

2. The raw material mixing device for sodium silicate production according to claim 1, characterized in that: The stirring and mixing mechanism comprises a stirring motor (9) and a stirring paddle (10); the stirring motor (9) is fixedly connected to the top of the mixing bin (1); the stirring paddle (10) is located in the mixing bin (1) and is fixedly connected to the output end of the stirring motor (9).

3. The raw material mixing device for sodium silicate production according to claim 1, characterized in that: The filter filling layer (7) is a microporous ceramic layer, a filter screen is fixedly connected inside the filter box (5), a microporous ceramic layer is filled above the filter screen, and the upper end of the filter box (5) is detachably connected to the input end of the induced draft fan (6) via a flange.

4. The raw material mixing device for sodium silicate production according to claim 1, characterized in that: A cleaning brush (11) is fixedly connected to the top of one side of the feed hopper (2) close to the raw material conveyor belt (4).

5. The raw material mixing device for sodium silicate production according to claim 1, characterized in that: A baffle (13) is hingedly connected to the bottom end of the feed hopper (2), a spring is hingedly connected below the baffle (13), the other end of the spring is connected to a fixed plate (12), and the fixed plate (12) is fixedly connected to the inner wall of the mixing bin (1).

6. The raw material mixing device for sodium silicate production according to claim 1, characterized in that: A support frame (14) is fixedly connected to the side of the mixing bin (1), and the top of the support frame (14) is fixedly connected to the bottom of the dust collecting box (3).

7. The raw material mixing device for sodium silicate production according to claim 1, characterized in that: The bottom of the mixing bin (1) is fixedly connected with a supporting leg (15).

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