Novel reaction kettle for silica sol production

Abstract

The utility model belongs to the technical field of chemical engineering and silica sol production, and particularly relates to a novel reaction kettle for silica sol production, which comprises a kettle body and a kettle cover positioned at the top of the kettle body and clamped into the kettle body to be matched with the kettle body, a stirring component is mounted in the kettle cover, and a torque sensor is mounted on the outer wall of a motor shaft on a driving motor of the stirring component. The outer wall of the kettle cover is provided with a quantitative water adding assembly, the quantitative water adding assembly is composed of a hydraulic push rod, a quantitative container and an atomizing head, a piston of the hydraulic push rod slides in the quantitative container, the other end of the quantitative container is communicated with the atomizing head, and the outer wall of the quantitative container close to the atomizing head is communicated with a water inlet pipe. Dehydration in the hydrolysis process of silica sol preparation is avoided, external air entering the kettle body is reduced, water can be continuously and quantitatively added, and the hydrolysis effect is prevented from being affected by direct contact of a large amount of water and materials.

Description

Technical Field

[0001] The utility model relates to the technical fields of chemical engineering and silica sol production, and particularly relates to a novel reaction kettle for silica sol production. Background Art

[0002] The main raw material of silica sol is a silicon source, which mainly includes sodium silicate, ammonium silicate, etc. During the hydrolysis process of the silicon source, the added water will break the chemical bonds in the silicon source to obtain silica monomers.

[0003] The existing patent (publication number: CN209828973U) discloses a novel reaction kettle for silica sol production. In this patent, motor A drives the stirring shaft and the spiral blade to rotate, and motor B drives the driving gear to rotate. The driving gear drives the meshing-connected driven gear to rotate, thereby driving the connecting shaft and the reciprocating lead screw to rotate. The rotation of the reciprocating lead screw drives the moving plate to reciprocate up and down along the guide rod, so that the spiral blade reciprocates up and down inside the tank while rotating and stirring, realizing uniform stirring of the reactants filled in the tank from top to bottom, effectively avoiding the situation that silicon powder cannot be stirred because it is suspended above the liquid surface by hydrogen. During the stirring process of silica sol production, the movement between silicon material particles will generate friction, so that the water molecules on the surface of the moisture will undergo dehydration, resulting in the adsorption of water. Specifically, it is found that the color of the silica sol surface becomes darker and its hygroscopicity also increases. This requires adding water. During the preparation of silica sol, it is necessary to be in a sealed environment. The traditional method of adding water through a pipeline is likely to allow external gas to enter the reaction kettle through the pipeline. At the same time, metal particles are likely to appear in the pipeline after a long time, affecting the gel composition. At the same time, the water flow rate through the pipeline is difficult to control and is not comprehensive enough, and a large amount of water is likely to directly contact the material.

[0004] Therefore, we propose a novel reaction kettle for silica sol production to avoid dehydration during the hydrolysis process of silica sol preparation, and at the same time reduce the entry of external air into the kettle body, which is beneficial to continuously and quantitatively add water to avoid a large amount of water directly contacting the material and affecting the hydrolysis effect. Content of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a novel reaction kettle for silica sol production to solve the problems existing in the above-mentioned background art.

[0006] To achieve the above object, the present utility model provides the following technical solution: A new type of reaction kettle for silica sol production, comprising a kettle body, a kettle cover adapted to be snapped onto the top of the kettle body, a stirring assembly installed inside the kettle cover, a torque sensor installed on the outer wall of the motor shaft of the driving motor of the stirring assembly, a quantitative water adding assembly installed on the outer wall of the kettle cover, the quantitative water adding assembly consisting of a hydraulic push rod, a quantitative container and an atomizing head, the piston of the hydraulic push rod sliding inside the quantitative container, the other end of the quantitative container being communicated with the atomizing head, and a water inlet pipe being communicated with the outer wall of the quantitative container near the atomizing head;

[0007] The hydraulic push rod is internally provided with a counter, the signal output end of the torque sensor is connected to the signal input end of the hydraulic push rod, and the signal output end of the hydraulic push rod is connected to the signal input end of the counter.

[0008] Further: A support rod for supporting the weight is further connected to the outer wall of the kettle body, and a discharge hopper for discharging materials is communicated inside the kettle body.

[0009] Further: The capacity of the quantitative container is 500 - 1000 ml, and the number of the quantitative containers and the hydraulic push rods are both three groups. The signal output ends of the three groups of hydraulic push rods are all connected to the signal input end of the counter.

[0010] Further: A release mechanism is arranged between the quantitative container and the atomizing head, and the hydraulic push rod pushes the piston to squeeze the quantitative container, and the release mechanism is pressed to release.

[0011] Further: The driving motor of the stirring assembly is respectively connected to an upward stirring shaft and a downward stirring shaft through a gear set, and the driving motor synchronously drives the upward stirring shaft and the downward stirring shaft to rotate through the gear set.

[0012] Further: The maximum value signal output end of the counter is connected to the closing signal input end of the hydraulic push rod.

[0013] Compared with the prior art, the technical effects and advantages of the present utility model are:

[0014] 1) For the new type of reaction kettle for silica sol production of the present utility model, through the setting of the torque sensor and the quantitative water adding assembly, the torque of the driving motor is detected by the torque sensor, and then the output power of the driving motor is calculated by the product of the torque and the rotational speed. When the output power of the driving motor continuously rises, it indicates that the raw materials have become viscous and dehydrated. Then, the quantitative water adding assembly is started to add water into the closed reaction kettle to avoid dehydration during the hydrolysis process of silica sol preparation.

[0015] 2) The novel reactor for producing silica sol of the present utility model, through the setting of the quantitative water addition component, external pure water is connected to the corresponding water inlet pipe through a hose, and enters the quantitative container through the water inlet pipe. The capacity of the quantitative container is a fixed value. By starting the hydraulic push rod, the liquid is pressurized under the push of the piston and enters the reactor through the atomizing head. The counter records the start times of the hydraulic push rod. When the count of the counter reaches the threshold, the hydraulic push rod stops, and continuous quantitative water addition is carried out in the reactor, which is beneficial to continuously and quantitatively add water to avoid a large amount of water directly contacting the material and affecting the hydrolysis effect. Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the structures of each layer of the optical cable of the novel reactor for producing silica sol of the present utility model;

[0017] Figure 2 It is a schematic diagram of the bending of the optical cable of the novel reactor for producing silica sol of the present utility model;

[0018] Figure 3 It is a schematic sectional view of the structures of each layer of the optical cable of the novel reactor for producing silica sol of the present utility model;

[0019] Figure 4 It is a schematic diagram of the wear-resistant layer structure of the novel reactor for producing silica sol of the present utility model.

[0020] The reference numerals are: 1, support rod; 2, kettle lid; 3, stirring assembly; 31, gear set; 32, upward stirring shaft; 33, downward stirring shaft; 34, torque sensor; 4, kettle body; 41, discharge hopper; 5, quantitative water addition component; 51, water inlet pipe; 52, hydraulic push rod; 53, piston; 54, quantitative container; 55, atomizing head; 56, counter. Detailed Embodiment

[0021] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the drawings in the present utility model. In addition, the forms of each structure recorded in the following embodiments are only examples, and the structures involved in the present utility model are not limited to the structures recorded in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0022] Embodiment:

[0023] Please refer to Figures 1-4, the present utility model provides a technical solution: a novel reactor for silica sol production, including a reactor body 4, a reactor cover 2 adapted to be snapped onto the top of the reactor body 4, a stirring assembly 3 installed inside the reactor cover 2, a torque sensor 34 installed on the outer wall of the motor shaft of the driving motor of the stirring assembly 3 to detect the torque of the driving motor, the driving motor of the stirring assembly 3 is respectively connected to an upward stirring shaft 32 and a downward pressing stirring shaft 33 through a gear set 31, and the driving motor drives the upward stirring shaft 32 and the downward pressing stirring shaft 33 to rotate synchronously through the gear set 31, thereby completing the stirring reaction of the materials in the reactor. A quantitative water adding assembly 5 is installed on the outer wall of the reactor cover 2, and the quantitative water adding assembly 5 is composed of a hydraulic push rod 52, a quantitative container 54 and an atomizing head 55. The piston 53 of the hydraulic push rod 52 slides inside the quantitative container 54, the other end of the quantitative container 54 is communicated with an atomizing head 55, and a water inlet pipe 51 is communicated with the outer wall of the quantitative container 54 near the atomizing head 55;

[0024] The torque of the driving motor is detected by the torque sensor 34, and then the output power of the driving motor is calculated by the product of the torque and the rotational speed. When the output power of the driving motor continues to rise, it indicates that the raw materials are viscous and dehydrated. Then, the quantitative water adding assembly 5 is started to add water into the closed reactor to avoid dehydration during the hydrolysis process of silica sol preparation;

[0025] The capacity of the quantitative container 54 is 500 - 1000 ml, and the number of both the quantitative container 54 and the hydraulic push rod 52 is three groups. The signal output ends of the three groups of hydraulic push rods 52 are all connected to the signal input end of a counter 56. The hydraulic push rod 52 is internally provided with a counter 56. The signal output end of the torque sensor 34 is connected to the signal input end of the hydraulic push rod 52. The signal output end of the hydraulic push rod 52 is connected to the signal input end of the counter 56. The maximum value signal output end of the counter 56 is connected to the closing signal input end of the hydraulic push rod 52;

[0026] The specific capacity of the quantitative container 54 needs to be adjusted according to the capacity of the reactor body 4 and the inner diameter size of the reactor body 4. The larger the capacity of the reactor body 4 and the inner diameter size of the reactor body 4, the larger the corresponding capacity of the quantitative container 54. External pure water is connected to the water inlet pipe 51 through a hose and enters the quantitative container 54 through the water inlet pipe 51. The capacity of the quantitative container 54 is a fixed value. By starting the hydraulic push rod 52, the liquid is pressurized under the push of the piston 53 and enters the reactor through the atomizing head 55, and the water flow is atomized and sent into the reactor to contact the raw materials. The three groups of hydraulic push rods 52 are started alternately. The counter 56 records the start times of the hydraulic push rods 52. When the count of the counter 56 reaches the threshold, the hydraulic push rod 52 is stopped, and continuous quantitative water addition is carried out in the reactor, which can continuously add water quantitatively to avoid a large amount of water directly contacting the materials and affecting the hydrolysis effect;

[0027] In specific implementation, the above circuit control needs to be completed by the MCU micro-control unit. The internal programming program of the MCU micro-control unit needs to be adjusted according to the actual products produced and the preparation methods, so it will not be elaborated here.

[0028] Wherein, a support rod 1 for supporting the weight is further connected to the outer wall of the kettle body 4. There are three groups of support rods 1, and thus the three groups of support rods 1 support the kettle body 4. A discharge hopper 41 for discharging materials is communicated inside the kettle body 4, and the raw materials in the kettle body 4 are discharged through the discharge hopper 41. Specific Embodiment 2

[0030] Preferably, a release mechanism is provided between the metering container 54 and the atomizing head 55. The hydraulic push rod 52 pushes the piston 53 to squeeze the metering container 54, and the release mechanism is pressed to release.

[0031] A check valve needs to be installed between the container for feeding pure water externally and the water inlet pipe 51 to prevent the hydraulic push rod 52 from pushing the piston 53 to move, causing the internal pressure of the metering container 54 to increase and resulting in the pure water flowing back through the hose.

[0032] Both the container for pure water and the metering container 54 are made of plastic material, and no metal particles will appear during long-term use. Compared with the existing situation of transporting water through metal pipes, when pure water is in contact with metal pipes for a long time, it is easy to carry away metal ions and mix with the raw materials, thereby affecting the quality of silica sol.

[0033] The release mechanism means that when the pressure exceeds the set value, the release mechanism will be triggered to open a channel to release the pressure. The release mechanism can be a mechanical switch, a solenoid valve or other forms of actuators. The mechanical switch can refer to the air pressure nozzle of a pressure cooker.

[0034] Specific working principle: The raw materials are added into the reaction kettle through the feed pipe. By starting the stirring assembly 3, the driving motor drives the upward stirring shaft 32 and the downward pressing stirring shaft 33 to rotate respectively through the gear set 31. The torque of the driving motor is detected by the torque sensor 34, and then the output power of the driving motor is calculated by multiplying the torque and the rotational speed. When the output power of the driving motor continues to rise, it indicates that the raw materials are becoming viscous and dehydrated. Then, the quantitative water adding assembly 5 is started to add water into the closed reaction kettle. The external pure water is connected to the corresponding water inlet pipe 51 through a hose and enters the quantitative container 54 through the water inlet pipe 51. The capacity of the quantitative container 54 is a fixed value. By starting the hydraulic push rod 52, the liquid is pressurized under the push of the piston 53 and enters the reaction kettle through the atomizing head 55, atomizing the water flow and sending it into contact with the raw materials in the reaction kettle. The three hydraulic push rods 52 are started alternately, and the start times of the hydraulic push rod 52 are recorded by the counter 56. When the count of the counter 56 reaches the threshold, the hydraulic push rod 52 stops, and quantitative water is continuously added into the reaction kettle.

[0035] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model, and any reference signs in the claims should not be regarded as limiting the claimed rights involved.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A novel reaction kettle for producing silica sol, comprising a kettle body (4), a kettle cover (2) adapted to the kettle body (4) being inserted into the top of the kettle body (4), a stirring assembly (3) being installed in the kettle cover (2), a torque sensor (34) being installed on the outer wall of the motor shaft of the driving motor of the stirring assembly (3), characterized in that: The outer wall of the kettle cover (2) is provided with a quantitative water adding assembly (5), which is composed of a hydraulic push rod (52), a quantitative container (54) and an atomizing head (55). The piston (53) of the hydraulic push rod (52) is located in the quantitative container (54) and slides. The other end of the quantitative container (54) is connected to the atomizing head (55). The outer wall of the quantitative container (54) near the atomizing head (55) is connected to a water inlet pipe (51). The hydraulic push rod (52) has a built-in counter (56), the signal output end of the torque sensor (34) is connected to the signal input end of the hydraulic push rod (52), and the signal output end of the hydraulic push rod (52) is connected to the signal input end of the counter (56).

2. A novel reaction kettle for producing silica sol according to claim 1, characterized in that: The outer wall of the kettle body (4) is also connected to a support rod (1) for supporting weight, and the kettle body (4) is connected to a discharge hopper (41) for discharging materials.

3. The novel reaction kettle for producing silica sol according to claim 1, characterized in that: The capacity of the quantitative container (54) is 500-1000 ml. The quantitative container (54) and the hydraulic push rod (52) are both provided in three groups. The signal output ends of the three groups of hydraulic push rods (52) are all connected to the signal input end of the counter (56).

4. The novel reaction kettle for producing silica sol according to claim 1, characterized in that: A release mechanism is provided between the quantitative container (54) and the atomizing head (55), and the hydraulic push rod (52) pushes the piston (53) to press the quantitative container (54) to release the release mechanism.

5. The novel reaction kettle for producing silica sol according to claim 1, characterized in that: The driving motor of the stirring assembly (3) is respectively connected to the upward stirring shaft (32) and the downward stirring shaft (33) through the gear set (31), and the driving motor synchronously drives the upward stirring shaft (32) and the downward stirring shaft (33) to rotate through the gear set (31).

6. The novel reaction kettle for producing silica sol according to claim 3, characterized in that: The maximum value signal output end of the counter (56) is connected to the closing signal input end of the hydraulic push rod (52).

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