A device for adding a calcium carbonate aid in a metered and atomized manner

Abstract

The utility model discloses a calcium carbonate auxiliary agent quantitative atomization adding device, the utility model discloses a storage agent jar is equipped with the stirring paddle in the jar, the metering conveying subassembly that the ceramic plunger metering pump that communicates with the storage agent jar is formed, the atomizer of metering conveying subassembly is connected through the anticorrosive pipeline, its inside is equipped with the spiral atomization shower nozzle, still has the compressed gas source that the gas pipe connects the atomizer through the take steady voltage valve, flowmeter. In addition, the utility model still contains the support, and the liquid level meter has in the storage agent jar lateral wall, and the one -way valve has between metering conveying subassembly and the anticorrosive pipeline, and the polytetrafluoroethylene blowdown valve is equipped in the atomizer bottom. The utility model can accurate quantitative conveying auxiliary agent and high -efficient atomization, make auxiliary agent and calcium carbonate powder even mix, promote the modification effect, simple structure, convenient operation, and the practicality is strong, has the remarkable application value in the dry -process production heavy modified calcium carbonate field.

Description

Technical Field

[0001] This utility model belongs to the technical field of additive addition equipment in the dry production process of heavy modified calcium carbonate, specifically relating to a quantitative atomization addition device for calcium carbonate additives. Background Technology

[0002] In the field of inorganic non-metallic materials processing, heavy calcium carbonate, as an important filler, is widely used in industries such as plastics, rubber, coatings, papermaking, and building materials due to its wide availability, low cost, and stable physicochemical properties. With the increasing demands for material performance from downstream industries, ordinary heavy calcium carbonate can no longer meet the needs of high-end products, leading to the development of modified heavy calcium carbonate. Through surface modification treatment, modified heavy calcium carbonate can significantly improve its compatibility, dispersibility, and interfacial bonding with organic matrices, thereby enhancing the mechanical properties, processing performance, and weather resistance of composite materials. Its market demand is showing a year-on-year growth trend.

[0003] In the dry production process of heavy modified calcium carbonate, the addition of additives is the core factor determining the modification effect. The amount of additives added and their dispersion uniformity directly affect the surface activation degree and modification consistency of the calcium carbonate powder. However, existing additive addition devices have many technical drawbacks in practical applications, making it difficult to meet the requirements of efficient and precise production.

[0004] Traditional methods of adding additives often involve manual pouring or simple dripping through pipes. This is not only labor-intensive but also relies entirely on the operator's experience, leading to significant errors. Excessive addition results in additive waste, increased production costs, and even additive agglomeration affecting product performance; insufficient addition fails to achieve adequate modification, resulting in poor product quality stability. For example, in the field of plastic fillers, uneven mixing of additives and calcium carbonate can lead to localized performance defects in composite materials, such as fluctuations in tensile strength and decreased impact toughness.

[0005] With the development of automation technology, some companies have introduced metering pumps for quantitative delivery, but there are still significant shortcomings in the atomization and dispersion stage. Existing atomization devices mostly use ordinary nozzles, resulting in coarse and unevenly distributed atomized particles. This leads to a small contact area between the additives and calcium carbonate powder, resulting in incomplete reaction. Furthermore, since many additives are corrosive, traditional delivery pipelines and atomization components are easily corroded, which not only shortens the equipment's lifespan but may also cause a decrease in metering accuracy due to component wear, further affecting the modification effect.

[0006] From the perspective of existing technology, additive addition devices suffer from problems such as simple structure and incomplete functions. For example, some devices only achieve quantitative delivery of additives and lack an effective atomization and dispersion mechanism; some devices, although equipped with atomization components, have low atomization efficiency, are prone to nozzle clogging, and do not consider the impact of the corrosiveness of additives on the equipment. In addition, most devices lack a stable gas source control unit, resulting in large fluctuations in atomization pressure, leading to unstable atomization effects and seriously affecting the consistency of product quality.

[0007] In terms of equipment material selection, traditional equipment mostly uses ordinary metal materials, which are prone to rust after long-term contact with corrosive additives. This not only contaminates materials but also causes problems such as leakage and inaccurate metering due to structural damage. At the same time, the existing equipment has a low degree of integration, with components scattered, making operation inconvenient, and lacking necessary auxiliary functions (such as liquid level monitoring, backflow prevention, and sewage discharge and cleaning), which increases the difficulty of equipment maintenance and the risk of production interruption.

[0008] As the heavy modified calcium carbonate industry develops towards high-end and refined products, the market demands increasingly higher requirements for additive addition devices. There is an urgent need for an integrated device that can achieve accurate metering, efficient atomization, stable delivery, corrosion resistance, and convenient operation. Utility Model Content

[0009] To overcome the problems of low metering accuracy, poor atomization effect, insufficient corrosion resistance, imperfect functions, and inconvenient operation and maintenance in existing technologies, this utility model provides a quantitative atomization addition device for calcium carbonate additives. It can realize the quantitative delivery, atomization addition, and stable delivery of additives. The integrated setting of various functional components can improve the accuracy of additive addition and atomization uniformity in the production of heavy modified calcium carbonate to a certain extent, which helps to improve the consistency of product quality and basically meets the needs of the heavy modified calcium carbonate industry for conventional production and gradual development towards refinement.

[0010] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0011] A quantitative atomization dosing device for calcium carbonate additives includes:

[0012] The storage tank, made of 304 stainless steel, is used to store liquid modifying agents. It has a feeding port at the top and a conical structure at the bottom.

[0013] The metering and delivery assembly has its input end connected to the bottom outlet of the storage tank and uses a ceramic plunger metering pump for quantitative delivery of additives.

[0014] The atomizer is made of titanium alloy. Its input end is connected to the output end of the metering and conveying component through a corrosion-resistant pipe. It is equipped with a spiral atomizing nozzle inside.

[0015] A compressed air source is connected to the air inlet on the side wall of the atomizer via an air pipe to provide atomization power.

[0016] Furthermore, the storage tank is equipped with a stirring paddle made of polytetrafluoroethylene and driven by a motor on the top of the tank, with a rotation speed of 30-60 r / min.

[0017] Furthermore, the corrosion-resistant pipe is made of polytetrafluoroethylene propylene, with an inner diameter of 8-12mm, and both ends are connected to the metering and conveying assembly and the atomizer respectively via quick-connect couplings.

[0018] Furthermore, a pressure regulating valve is provided on the air pipe between the compressed air source and the atomizer. The pressure regulating valve is made of copper and has an adjustment range of 0.2-0.5 MPa.

[0019] Furthermore, the diameter of the nozzle orifice of the spiral atomizing nozzle is 0.8-1.2 mm, and the surface of the nozzle is coated with polytetrafluoroethylene.

[0020] Furthermore, the storage tank is equipped with a level gauge on its side wall, which is connected to the inside of the tank and is at the same height as the tank body.

[0021] Furthermore, it also includes a support frame, which is made of Q235 carbon steel with a galvanized surface. The storage tank, metering and conveying components and atomizer are fixed to the support frame by bolts, and the outlet end of the atomizer is higher than the feed inlet of the vertical mill.

[0022] Furthermore, a one-way valve is provided between the metering and conveying component and the corrosion-resistant pipeline. The one-way valve is made of 316 stainless steel to prevent the additive from flowing back.

[0023] Furthermore, the atomizer is equipped with a drain valve at the bottom, which is made of polytetrafluoroethylene and is used to periodically drain residual liquid.

[0024] Furthermore, the compressed air source is equipped with a flow meter on its air pipe. The flow meter is made of aluminum alloy and has a measuring range of 0-10m. 3 / h, is connected in series with a pressure regulating valve.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. It helps improve the accuracy of adjuvant dosage and reduce dosage deviation.

[0027] Compared to traditional manual pouring or simple pipeline dripping methods that rely on experience and are prone to dosage errors, this invention uses a metering pump to form a metering delivery component, which can quantitatively control the amount of additives delivered. At the same time, a one-way valve is installed between the metering delivery component and the corrosion-resistant pipeline to prevent the backflow of additives from interfering with the delivery process. With these two measures combined, the fluctuation of the amount of additives added can be reduced, providing a basic guarantee for the consistency of the subsequent heavy-modified calcium carbonate modification effect. This solves some of the problems of "excessive waste and insufficient modification" in traditional methods.

[0028] 2. It can improve the atomization effect of additives and promote the mixing of additives and powders.

[0029] To address the issue of coarse and unevenly distributed atomized particles in existing ordinary nozzles, this invention employs a spiral atomizing nozzle with a nozzle diameter of 0.8-1.2mm, enabling the additive to form relatively fine atomized particles. Furthermore, a pressure regulating valve and a flow meter are connected in series on the air pipe between the compressed air source and the atomizer, allowing for adjustment of the atomization pressure and gas flow rate. This reduces the impact of pressure fluctuations on the atomization effect, thereby increasing the contact area between the additive and calcium carbonate powder, creating conditions for more thorough mixing, and alleviating to some extent the problem of insufficient reaction between the additive and powder in traditional devices.

[0030] 3. Improve the corrosion resistance of the equipment and extend the service life of components.

[0031] Existing traditional devices suffer from insufficient corrosion resistance of component materials, making them prone to rust and damage from prolonged contact with corrosive additives. In this invention, the storage tank's stirring paddle and atomizer drain valve are made of polytetrafluoroethylene (PTFE), the corrosion-resistant pipes are made of perfluoropropylene (PFMP), the one-way valve is made of 316 stainless steel, and the atomizer is made of titanium alloy. These materials exhibit good resistance to common corrosive additives, reducing their impact on components and lowering the probability of leaks and metering inaccuracies caused by component corrosion. This extends the overall service life of the device and reduces maintenance frequency and costs associated with component damage.

[0032] 4. Optimize the structural layout of the equipment to improve the convenience of operation and maintenance.

[0033] Traditional equipment often suffers from low integration and scattered components, increasing the difficulty of operation and maintenance. This utility model integrates and fixes the storage tank, metering and conveying components, and atomizer using a galvanized Q235 carbon steel bracket, optimizing the spatial layout and facilitating centralized operation. A level gauge at the same height as the tank body is installed on the side wall of the storage tank, allowing for direct observation of the amount of additives inside and facilitating timely replenishment. The corrosion-resistant pipes are equipped with quick-connect fittings at both ends, and a drain valve is provided at the bottom of the atomizer, providing convenience for pipe disassembly and maintenance, as well as cleaning residual liquid inside the atomizer, thereby reducing production interruptions caused by inconvenient operation or maintenance. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the device of this utility model.

[0035] In the attached diagram: 1-Storage tank; 2-Metering and conveying assembly; 3-Atomizer; 4-Compressed air source; 5-Corrosion-resistant pipe; 6-Pressure stabilizing valve; 7-Support; 8-Flow meter; 9-Agitator; 10-Feeding port; 11-Level gauge; 21-Ceramic plunger metering pump; 22-Check valve; 31-Spiral atomizing nozzle; 32-Drain valve. Detailed Implementation

[0036] The foregoing has broadly described the features and technical advantages of this utility model in order to provide a better understanding of its detailed description. Other features and advantages of this utility model will be described below. Those skilled in the art will understand that the disclosed concepts and specific embodiments can be readily used as a basis for modifying or designing other structures to accomplish the same purpose of this utility model. Those skilled in the art will also recognize that such equivalent constructions do not depart from the spirit and scope of this utility model. The novel features considered characteristic of this utility model, its structure and method of operation, as well as further objects and advantages, will be better understood from the following description in conjunction with the accompanying drawings. However, it should be clearly understood that each feature provided is for description and illustration only and is not intended to limit the definition of this utility model.

[0037] The present utility model patent will be further described in detail below with reference to the accompanying drawings and examples:

[0038] A storage tank 1, made of 304 stainless steel, is used to store liquid modified additives. The tank has a feed port 10 at the top and a conical bottom to facilitate smooth flow of the additives. Inside the tank is a stirring paddle 9 made of polytetrafluoroethylene (PTFE), driven by a motor at the top of the tank, with a speed controlled at 30-60 r / min. This paddle agitates the additives to maintain their uniformity. A level gauge 11 is also installed on the side wall of the tank, connected to the inside and at the same height as the tank body, displaying the real-time level of the additives. A metering and conveying assembly 2 uses a ceramic plunger metering pump 21, whose input is connected to the bottom outlet of the storage tank 1, for quantitative delivery of the additives. A one-way valve 22 made of 316 stainless steel is installed between the metering and conveying assembly 2 and the corrosion-resistant pipe 5 to effectively prevent backflow of the additives. The corrosion-resistant pipe 5 is made of perfluoroethylene propylene (PFEP) with an inner diameter between 8-12 mm. Both ends are connected to the metering and delivery assembly 2 and the atomizer 3 respectively via quick-connect couplings to achieve stable delivery of the additives. The atomizer 3 is made of titanium alloy, and its input end is connected to the output end of the metering and delivery assembly 2 via the aforementioned corrosion-resistant pipe 5. The atomizer 3 is equipped with a spiral atomizing nozzle 31 with a nozzle diameter of 0.8-1.2mm. The nozzle surface is coated with polytetrafluoroethylene (PTFE) to enhance corrosion resistance and anti-clogging performance. The bottom of the atomizer 3 is also equipped with a PTFE drain valve 32 for periodically draining residual liquid inside the atomizer 3. The compressed air source 4 is connected to the air inlet on the side wall of the atomizer 3 via an air pipe to provide power for the atomization process. A copper pressure regulating valve 6 is installed on the air pipe between the compressed air source 4 and the atomizer 3. The pressure regulating valve 6 has an adjustment range of 0.2-0.5MPa. At the same time, an aluminum alloy flow meter 8 is also installed on the air pipe. The flow meter 8 has a range of 0-10m. 3 / h, and is connected in series with the pressure regulating valve 6, which can accurately control the gas flow and pressure; the whole device also includes a bracket 7 made of Q235 carbon steel with galvanized surface, the storage tank 1, the metering and conveying component 2 and the atomizer 3 are fixed to the bracket 7 by bolts, and the outlet end of the atomizer 3 is higher than the feed port of the vertical mill, ensuring that the atomized additive can smoothly enter the vertical mill and mix with the calcium carbonate powder.

[0039] The technical principle of this utility model is as follows:

[0040] This invention achieves precise quantitative delivery and efficient atomized addition of liquid modified additives in the dry process production of heavy modified calcium carbonate through the coordinated operation of its components. The storage tank stores the additives, with a top inlet for easy replenishment and a conical structure at the bottom to facilitate smooth flow. An internal stirring paddle continuously agitates at a specific speed to maintain the uniformity of the additives, and a level gauge on the side wall monitors the additive level in real time. The metering and delivery component is connected to the bottom of the storage tank, enabling precise quantitative delivery of the additives. A one-way valve between the component and the corrosion-resistant pipeline effectively prevents backflow and ensures metering accuracy. The corrosion-resistant pipeline connects the metering and delivery component and the atomizer via quick-connect fittings, ensuring stable delivery of the additives. Gas supplied by a compressed air source is metered by a flow meter and regulated by a pressure valve before entering the atomizer. It mixes thoroughly with the additives delivered via the corrosion-resistant pipeline at the spiral atomizing nozzle inside the atomizer. The spiral structure atomizes the additives into fine and uniform particles, significantly increasing the contact area with the calcium carbonate powder. A drain valve is installed at the bottom of the atomizer to periodically drain residual liquid and prevent blockage. The bracket secures the storage tank, metering and conveying components, and the atomizer outlet is higher than the feed inlet of the vertical mill, ensuring that the atomized additive can smoothly enter the mill and fully mix with the calcium carbonate powder for efficient modification. This effectively solves the problems of inaccurate metering and poor atomization effect in traditional devices.

[0041] Those skilled in the art will recognize that the examples described herein are intended to help the reader understand the principles of this invention, and should be understood as not limiting the scope of protection of this invention to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on these technical teachings disclosed herein without departing from the scope of this invention, and these modifications and combinations are still within the scope of protection of this invention.

Claims

1. A quantitative atomization dosing device for calcium carbonate additives, characterized in that, include: Storage tank (1) is used to store liquid modifying additives, and a feeding port (10) is provided on its top. The metering and delivery assembly (2) has its input end connected to the bottom outlet of the storage tank (1) and uses a metering pump (21) for quantitative delivery of the additives; The atomizer (3) has its input end connected to the output end of the metering and conveying assembly (2) via a corrosion-resistant pipe (5), and is equipped with an atomizing nozzle (31) inside. A compressed air source (4) is connected to the air inlet on the side wall of the atomizer (3) through an air pipe to provide atomization power.

2. The quantitative atomization addition device for calcium carbonate additive according to claim 1, characterized in that, The storage tank (1) is equipped with a stirring paddle (9), which is made of polytetrafluoroethylene and driven by a motor on the top of the tank. The stirring paddle (9) has a rotation speed of 30-60 r / min.

3. The quantitative atomization addition device for calcium carbonate additive according to claim 1, characterized in that, The corrosion-resistant pipe (5) is made of polytetrafluoroethylene propylene with an inner diameter of 8-12mm. Both ends are connected to the metering and conveying assembly (2) and the atomizer (3) respectively through quick-connect fittings.

4. The quantitative atomization addition device for calcium carbonate additive according to claim 1, characterized in that, A pressure regulating valve (6) is provided on the air pipe between the compressed air source (4) and the atomizer (3). The pressure regulating valve (6) is made of copper and has an adjustment range of 0.2-0.5 MPa.

5. The quantitative atomization addition device for calcium carbonate additive according to claim 1, characterized in that, The atomizing nozzle (31) has a nozzle diameter of 0.8-1.2 mm and the nozzle surface is coated with polytetrafluoroethylene.

6. The quantitative atomization addition device for calcium carbonate additive according to claim 1, characterized in that, The storage tank (1) is equipped with a level gauge (11) on its side wall, which is connected to the inside of the tank and is at the same height as the tank body.

7. The quantitative atomization addition device for calcium carbonate additive according to claim 1, characterized in that, It also includes a bracket (7), which is made of Q235 carbon steel and galvanized. The storage tank (1), metering and conveying assembly (2) and atomizer (3) are fixed to the bracket (7) by bolts. The outlet end of the atomizer (3) is higher than the feed port of the vertical mill.

8. The quantitative atomization addition device for calcium carbonate additive according to claim 1, characterized in that, A one-way valve (22) is provided between the metering and conveying component (2) and the corrosion-resistant pipe (5). The one-way valve (22) is made of 316 stainless steel to prevent the additive from flowing back.

9. The quantitative atomization addition device for calcium carbonate additive according to claim 1, characterized in that, The atomizer (3) is equipped with a drain valve (32) at the bottom. The drain valve (32) is made of polytetrafluoroethylene and is used to periodically drain residual liquid.

10. The quantitative atomization addition device for calcium carbonate additive according to claim 1, characterized in that, The compressed air source (4) is also equipped with a flow meter (8) on its air pipe. The flow meter (8) is made of aluminum alloy and has a range of 0-10 m3 / h. It is connected in series with the pressure stabilizing valve (6).

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