CN219347926U - Silica weighing device for silica sol production - Google Patents

Abstract

The utility model relates to the technical field of silica sol production, in particular to a silica weighing device for silica sol production, which comprises a mounting base, wherein a guide pipe is arranged in the middle of the bottom of the mounting base, a U-shaped fixed plate is arranged at the top of the mounting base, a storage vat is movably connected to the top of the U-shaped fixed plate, two fixing lugs which are symmetrically arranged left and right are arranged at the middle upper part of the outer wall of the storage vat, limit rods are arranged at the bottoms of the two fixing lugs, and weighing sensors are arranged at the top of the mounting base and at positions close to the left and right sides of the inner wall of the U-shaped fixed plate. According to the silica weighing device for silica sol production, the weighing sensor can detect the weight difference value of the total weight reduction of the fumed silica stored in the storage barrel, so that the fumed silica is weighed; the guide pipe is inserted into the feed inlet of the silica sol production equipment, and the discharge pipe of the storage barrel passes through the guide pipe to the inside of the silica sol production equipment, so that the condition of leakage during the addition of fumed silica is avoided.

Description

Silica weighing device for silica sol production

Technical Field

The utility model relates to the technical field of silica sol production, in particular to a silica weighing device for silica sol production.

Background

Silica sol belongs to colloidal solution, is odorless and nontoxic, is dispersion of nano-scale silica particles in water or solvent, and is often used for preparing catalyst carriers, styrene polymerization suspending agents, fire-resistant binders, soil curing agents, cement modifying agents and the like in the chemical industry.

Several methods for preparing silica sols are common: silicon dissolution, acid neutralization, ion exchange, electroosmosis, colloidal solution and dispersion. The silicon dissolving method is a silica sol method which takes inorganic or organic alkali as a catalyst and prepares silica sol by the reaction of simple substance silicon and pure water; the acid neutralization method uses diluted sodium silicate as a starting material, dilute sulfuric acid and other inorganic acids as acidulants, and can prepare acidic or alkaline silica sol according to the use amount of the acid; the ion exchange method is a technology which is researched and mature at present and is generally divided into two steps of preparing active silicic acid and growing and concentration of colloid particles; the electroosmosis is an electrochemical method, electrolyte is added into an electroosmosis cell, the ph value of the electrolyte solution is regulated, the reaction conditions such as current density and temperature of the electroosmosis reaction are controlled, and silica sol can be prepared after the electroosmosis cell with proper electrodes is reacted; neutralizing sodium silicate solution with acid, filtering gel, washing with water, adding dilute alkali solution, and heating under pressure to degumm sol to obtain colloid solution; the dispersion method is a physical method for preparing silica sol by mechanically dispersing silica particles in water, and comprises the following specific steps: weighing a certain amount of deionized water, adding the deionized water into a dry and clean plastic cup, fixing the plastic cup on a high-speed dispersing machine, starting the high-speed dispersing machine, continuously adding a certain amount of gas-phase silicon powder into the cup, covering the cup opening by a plastic film to prevent water evaporation and silicon powder from flying, adding a certain amount of deionized water after adding silicon dioxide powder, adjusting the high dispersing speed for 1.5h to prepare a silicon dioxide water dispersion, aging the silicon dioxide water dispersion overnight, dispersing at a high speed for 2 h, adding an additive solution, dispersing at a high speed for 2 h, and filtering by a 300-mesh sieve to obtain a product with good performance.

In the production of silica sol, a dispersion method is mostly adopted, that is, fumed silica is used as a raw material, and the physical method for preparing the silica sol in water by mechanically dispersing silica particles is adopted, wherein in the process of preparing the silica sol, the weight of the fumed silica to be added is required to be weighed and the fumed silica and deionized water are added according to a certain proportion, but the fumed silica is lighter in weight and difficult to weigh, and the fumed silica is easy to lift up in the weighing process, so that the fumed silica leaks into the air and is easy to cause environmental pollution.

Disclosure of Invention

The utility model aims to provide a silica scale for silica sol production, which solves the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the silica weighing device for producing the silica sol comprises a mounting base, wherein a guide pipe is arranged in the middle of the bottom of the mounting base, a plurality of mounting holes are formed in the mounting base, the mounting base can be fixed on production equipment of the silica sol through bolts, and the guide pipe is inserted into one of feed inlets of the production equipment of the silica sol, so that the silica is prevented from leaking from the feed inlets of the production equipment of the silica sol;

the top of the mounting base is provided with a U-shaped fixed plate, the top of the U-shaped fixed plate is movably connected with a storage vat for storing a certain amount of fumed silica, the bottom of the storage vat is provided with a conical groove which is beneficial to the fumed silica to enter a discharging pipe downwards, the bottom end of the conical groove is provided with the discharging pipe, and the discharging pipe is provided with an electric butterfly valve for controlling the switch of the discharging pipe so that the fumed silica is output according to a set amount to realize the weighing of the fumed silica;

the bottom ends of the discharging pipes sequentially penetrate through the top of the U-shaped fixed plate and the guide pipe, so that the bottom ends of the discharging pipes are positioned in silica sol production equipment, two fixing convex blocks which are symmetrically arranged left and right are arranged at the middle upper part of the outer wall of the storage vat, limiting rods are arranged at the bottoms of the two fixing convex blocks, weighing sensors are arranged at the top of the mounting base and close to the left side and the right side of the inner wall of the U-shaped fixed plate, the bottom ends of the two limiting rods penetrate through the top of the U-shaped fixed plate and respectively abut against the stressed surfaces of the two weighing sensors, the weighing sensors adopt strain gauge weighing sensors, and an electric butterfly valve and the two weighing sensors are electrically connected with an external controller through wires;

after the gas phase silicon dioxide output part in the storage vat, the total weight of the gas phase silicon dioxide stored in the storage vat can be reduced, and the weighing sensor can detect the reduced weight difference, so that the gas phase silicon dioxide is weighed, and when the detection reaches the required weighing value, the external controller controls the electric butterfly valve to be closed.

Preferably, a circular hole for the discharging pipe to pass through is formed in the middle of the top of the U-shaped fixed plate, the inner diameter of the circular hole is matched with the outer diameter of the discharging pipe, the inner diameter of the guiding pipe is larger than the outer diameter of the discharging pipe, and the friction force when the discharging pipe moves is reduced.

Preferably, the top flange joint of storage vat has detachable bung, the top of bung just is close to the position of outward flange and is equipped with the injection tube for add fumed silica to the storage vat in, the top threaded connection of injection tube has detachable tube cap, is used for closed injection tube, the middle part at bung top is equipped with servo motor, the top of bung just is located the position in the servo motor outside and is equipped with the protection casing, has seted up the louvre on the protection casing, plays the guard action to servo motor.

Preferably, the middle part of bung bottom rotates and is connected with the axis of rotation, servo motor output shaft's tip passes the top of bung and with the top coaxial coupling of axis of rotation, through servo motor drive axis of rotation.

Preferably, the middle upper portion of axis of rotation outer wall is equipped with two first connecting horizontal poles that are bilateral symmetry and set up, the well lower part of axis of rotation outer wall is equipped with two second connecting horizontal poles that are bilateral symmetry and set up, the outer wall of axis of rotation just is close to the position of bottom and is equipped with two connecting diagonal bars that are bilateral symmetry and set up, homonymy the outer end of first connecting horizontal pole, second connecting horizontal pole and connecting diagonal bar is connected with the scraper blade jointly, the outside of scraper blade is laminated with the inner wall of storage vat and taper groove mutually, drives two scraper blades through the axis of rotation and rotates, scrapes the inner wall of storage vat and taper groove clearly to avoid fumed silica adhesion on the inner wall of storage vat and taper groove, avoid long-before fumed silica to remain at the storage vat.

Preferably, the bottom of axis of rotation is equipped with the auger, the auger is located the inside first half of discharging pipe, just the external diameter of auger and the internal diameter looks adaptation of discharging pipe, carries down the fumed silica in the conical tank through the auger.

Preferably, the top of the U-shaped fixed plate is provided with two circular fixed pipes which are arranged in bilateral symmetry, the two limiting rods respectively penetrate through the two circular fixed pipes, the outer diameter of each limiting rod is matched with the inner diameter of each circular fixed pipe, the limiting rods are limited, and meanwhile the storage barrel is limited.

Preferably, the outer wall of the storage vat is provided with an observation window, so that a user can observe the residual amount of the fumed silica in the storage vat.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the silica weighing device for silica sol production, after the fumed silica in the storage vat is output, the total weight of the fumed silica stored in the storage vat is reduced, the weighing sensor can detect the reduced weight difference, and when the detected weight difference reaches the required weight of the fumed silica, the electric butterfly valve rapidly closes the discharging pipe, so that the fumed silica is weighed.

2. The installation base is fixedly installed on the silica sol production equipment through the bolts, the guide pipe is inserted into the feed inlet of the silica sol production equipment, and the discharge pipe of the storage barrel penetrates through the guide pipe to the inside of the silica sol production equipment, so that the condition of leakage when fumed silica is added to the silica sol production equipment is avoided.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of the assembly structure of the mounting base, U-shaped fixing plate and weighing sensor of the present utility model;

FIG. 3 is a schematic view of a portion of the structure of the present utility model;

FIG. 4 is a second schematic diagram of a portion of the structure of the present utility model;

fig. 5 is a schematic diagram showing an assembly structure of a rotating shaft, a packing auger, a servo motor and a scraper in the present utility model.

In the figure: the device comprises a mounting base l, a guide pipe 10, a U-shaped fixing plate 2, a round fixing pipe 20, a round hole 2l, a storage bucket 3, a conical groove 30, an observation window 3l, a fixing lug 32, a limit rod 320, a discharge pipe 33, a bucket cover 4, a material filling pipe 40, a pipe cover 4l, a rotating shaft 5, a first connecting cross rod 50, a second connecting cross rod 5l, a connecting diagonal rod 52, a packing auger 6, a servo motor 7, an electric butterfly valve 8, a weighing sensor 9, a scraping plate 11 and a protective cover 12.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-5, the present utility model provides a technical solution:

the silica weighing device for producing the silica sol comprises a mounting base 1, wherein a guide pipe 10 is arranged in the middle of the bottom of the mounting base 1, a plurality of mounting holes are formed in the mounting base 1, the mounting base 1 can be fixed on production equipment of the silica sol through bolts, and the guide pipe 10 is inserted into one of feed inlets of the production equipment of the silica sol, so that the silica is prevented from leaking from the feed inlets of the production equipment of the silica sol;

the top of the mounting base 1 is provided with a U-shaped fixed plate 2, the top of the U-shaped fixed plate 2 is movably connected with a storage vat 3 for storing a certain amount of fumed silica, the bottom of the storage vat 3 is provided with a conical groove 30 which is beneficial to the fumed silica to enter a discharging pipe 33 downwards, the bottom end of the conical groove 30 is provided with the discharging pipe 33, and the discharging pipe 33 is provided with an electric butterfly valve 8 for controlling the switch of the discharging pipe 33 so that the fumed silica is output according to the set amount to realize the weighing of the fumed silica;

the bottom ends of the discharging pipes 33 sequentially penetrate through the top of the U-shaped fixed plate 2 and the guide pipe 10, so that the bottom ends of the discharging pipes 33 are positioned in silica sol production equipment, two fixing convex blocks 32 which are symmetrically arranged left and right are arranged at the middle upper part of the outer wall of the storage vat 3, limiting rods 320 are arranged at the bottoms of the two fixing convex blocks 32, weighing sensors 9 are arranged at the top of the mounting base 1 and at positions which are close to the left and right sides of the inner wall of the U-shaped fixed plate 2, the bottom ends of the two limiting rods 320 penetrate through the top of the U-shaped fixed plate 2 and respectively abut against the stress surfaces of the two weighing sensors 9, the weighing sensors 9 adopt strain gauge weighing sensors, and an electric butterfly valve 8 and the two weighing sensors 9 are electrically connected with an external controller through wires;

when the gas phase silicon dioxide output part in the storage vat 3 is back, the total weight of the gas phase silicon dioxide stored in the storage vat 3 can be reduced, and the weighing sensor 9 can detect the reduced weight difference, so that the gas phase silicon dioxide is weighed, and when the detection reaches the required weighing value, the external controller controls the electric butterfly valve 8 to be closed.

In this embodiment, the middle part at the top of the U-shaped fixing plate 2 is provided with a circular hole 21 through which the discharging pipe 33 passes, the inner diameter of the circular hole 21 is matched with the outer diameter of the discharging pipe 33, the inner diameter of the guiding pipe 10 is larger than the outer diameter of the discharging pipe 33, and the friction force when the discharging pipe 33 moves is reduced.

Specifically, the top flange joint of storage vat 3 has detachable bung 4, and the top of bung 4 just is close to the position of outward flange and is equipped with injection pipe 40 for add fumed silica to storage vat 3 in, injection pipe 40's top threaded connection has detachable tube cap 41, is used for closed injection pipe 40, and the middle part at bung 4 top is equipped with servo motor 7, and the top of bung 4 just is located the position in servo motor 7 outside and is equipped with protection casing 12, has seted up the louvre on the protection casing 12, plays the guard action to servo motor 7.

Further, the middle part of the bottom of the barrel cover 4 is rotationally connected with a rotating shaft 5, and the end part of the output shaft of the servo motor 7 passes through the top of the barrel cover 4 and is coaxially connected with the top end of the rotating shaft 5, and the rotating shaft 5 is driven to rotate through the servo motor 7.

Further, the middle upper portion of the outer wall of the rotating shaft 5 is provided with two first connecting cross bars 50 which are arranged in a bilateral symmetry manner, the middle lower portion of the outer wall of the rotating shaft 5 is provided with two second connecting cross bars 51 which are arranged in a bilateral symmetry manner, the outer wall of the rotating shaft 5 is provided with two connecting diagonal bars 52 which are arranged in a bilateral symmetry manner and close to the bottom end, the outer ends of the first connecting cross bars 50, the second connecting cross bars 51 and the connecting diagonal bars 52 on the same side are connected with scraping plates 11 together, the outer sides of the scraping plates 11 are attached to the inner walls of the storage bucket 3 and the conical groove 30, the two scraping plates 11 are driven to rotate through the rotating shaft 5, the inner walls of the storage bucket 3 and the conical groove 30 are scraped, and accordingly fumed silica is prevented from adhering to the inner walls of the storage bucket 3 and the conical groove 30, and long-before fumed silica is prevented from remaining in the storage bucket 3.

Further, the bottom of the rotating shaft 5 is provided with an auger 6, the auger 6 is located at the upper half part of the inside of the discharging pipe 33, the outer diameter of the auger 6 is matched with the inner diameter of the discharging pipe 33, and fumed silica in the conical groove 30 is conveyed downwards through the auger 6.

Further, the top of the U-shaped fixed plate 2 is provided with two circular fixed pipes 20 which are arranged in bilateral symmetry, the two limiting rods 320 respectively penetrate through the two circular fixed pipes 20, the outer diameter of each limiting rod 320 is matched with the inner diameter of each circular fixed pipe 20, the limiting rods 320 are limited, and meanwhile the storage vat 3 is limited.

Further, the outer wall of the storage vat 3 is provided with an observation window 31, which is beneficial for a user to observe the residual amount of the fumed silica in the storage vat 3.

When the silica weighing device for silica sol production of the embodiment is used, a user fixedly installs the installation base 1 on silica sol production equipment through bolts, so that the guide pipe 10 is inserted into a feed inlet of the silica sol production equipment, at the moment, the bottom end of the discharge pipe 33 is positioned in the silica sol production equipment, thereby avoiding the condition of leakage when fumed silica is added to the silica sol production equipment, then the user adds fumed silica into the storage vat 3 through the injection pipe 40, and after the fumed silica is fully stored in the storage vat 3, the user uses the pipe cover 41 to close the injection pipe 40; when the fumed silica needs to be added into the silica sol production equipment, the electric butterfly valve 8 is opened, the servo motor 7 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the two scraping plates 11 and the packing auger 6 to rotate, the scraping plates 11 can prevent the fumed silica from being adhered to the inner walls of the storage vat 3 and the conical groove 30, the packing auger 6 conveys the fumed silica in the conical groove 30 downwards, so that the fumed silica enters the silica sol production equipment, meanwhile, the two weighing sensors 9 detect the change of the total weight of the fumed silica stored in the storage vat 3, and when the detected weight difference reaches the required weight of the fumed silica, the electric butterfly valve 8 rapidly closes the discharging pipe 33, so that the fumed silica is weighed.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a silica scale of silica sol production, includes installation base (1), its characterized in that: the utility model discloses a storage battery pack, including installation base (1), baffle (10) are equipped with in the middle part of installation base (1) bottom, the top of installation base (1) is equipped with U-shaped fixed board (2), the top swing joint of U-shaped fixed board (2) has storage vat (3), the bottom of storage vat (3) is equipped with conical groove (30), the bottom of conical groove (30) is equipped with discharging pipe (33), be equipped with electric butterfly valve (8) on discharging pipe (33), the top and the baffle (10) of U-shaped fixed board (2) are passed in proper order to the bottom of discharging pipe (33), the well upper portion of storage vat (3) outer wall is equipped with two fixed lug (32) that are bilateral symmetry setting, two the bottom of fixed lug (32) all is equipped with gag lever post (320), the top of installation base (1) and the position that is close to U-shaped fixed board (2) inner wall left and right sides all is equipped with weighing sensor (9), two the bottom of gag lever post (320) is passed the top of U-shaped fixed board (2) and is respectively with the atress of two weighing sensor (9).

2. A silica scale produced from silica sol according to claim 1, wherein: the middle part at the top of the U-shaped fixed plate (2) is provided with a circular hole (21) through which a feed-out pipe (33) passes, the inner diameter of the circular hole (21) is matched with the outer diameter of the discharge pipe (33), and the inner diameter of the guide pipe (10) is larger than the outer diameter of the discharge pipe (33).

3. A silica scale produced from silica sol according to claim 1, wherein: the top flange joint of storage vat (3) has detachable bung (4), the top of bung (4) and be close to the position of outward flange and be equipped with injection pipe (40), the top threaded connection of injection pipe (40) has detachable tube cap (41), the middle part at bung (4) top is equipped with servo motor (7), the top of bung (4) just is located the position in servo motor (7) outside and is equipped with protection casing (12).

4. A silica scale produced from silica sol according to claim 3 wherein: the middle part of bung (4) bottom rotates and is connected with axis of rotation (5), servo motor (7) output shaft's tip passes the top of bung (4) and with the top coaxial coupling of axis of rotation (5).

5. A silica scale produced from silica sol according to claim 4, wherein: the utility model discloses a scraper blade, including axis of rotation (5) and storage vat (3), including axis of rotation (5) and connecting diagonal (52), well upper portion of axis of rotation (5) outer wall is equipped with two first connecting horizontal pole (50) that are bilateral symmetry setting, the well lower part of axis of rotation (5) outer wall is equipped with two second connecting horizontal pole (51) that are bilateral symmetry setting, the outer wall of axis of rotation (5) and be close to the position of bottom are equipped with two connecting diagonal (52) that are bilateral symmetry setting, homonymy the outer end of first connecting horizontal pole (50), second connecting horizontal pole (51) and connecting diagonal (52) is connected with scraper blade (11) jointly, the outside of scraper blade (11) is laminated mutually with the inner wall of storage vat (3) and conical tank (30).

6. A silica scale produced from silica sol according to claim 4, wherein: the bottom of axis of rotation (5) is equipped with auger (6), auger (6) are located the inside first half of discharging pipe (33), just the external diameter of auger (6) and the internal diameter looks adaptation of discharging pipe (33).

7. A silica scale produced from silica sol according to claim 1, wherein: the top of U-shaped fixed plate (2) is equipped with two circular fixed pipes (20) that are bilateral symmetry and set up, two gag lever post (320) are passed respectively from two circular fixed pipes (20), just the external diameter of gag lever post (320) and the internal diameter looks adaptation of circular fixed pipe (20).

8. A silica scale produced from silica sol according to claim 1, wherein: an observation window (31) is arranged on the outer wall of the storage barrel (3).

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