A cement bag soaking device for calcium silicate boards

Abstract

This utility model discloses a cement bag soaking device for calcium silicate boards, including a soaking tank, an inlet pipe, a drain pipe, an ultrasonic device, a steam inlet pipe, and a temperature control system. The soaking tank has a lid on top, and the inlet pipe is located on the lid and communicates with the interior of the soaking tank, with a valve on the inlet pipe. The drain pipe is located on the lower part of the side wall of the soaking tank and communicates with the interior of the soaking tank, with a shut-off valve on the drain pipe. The ultrasonic device is symmetrically arranged on the inner side wall of the soaking tank and is electrically connected to the temperature control system. The steam inlet pipe is located on the lower part of the side wall of the soaking tank and communicates with the interior of the soaking tank, with a flow control valve on the steam inlet pipe. The temperature control system is located on the soaking tank and is electrically connected to the flow control valve. This utility model can quickly and uniformly achieve sufficient swelling and softening of the cement bag, improving the subsequent pulping effect and the final board quality, while reducing overall production costs.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary equipment for calcium silicate board production, specifically, it relates to a cement bag soaking device for calcium silicate board. Background Technology

[0002] Calcium silicate board is a type of board made by using siliceous and calcareous materials as the main binding materials and inorganic mineral fibers or cellulose fibers as reinforcement materials, through molding, pressing, and autoclaving. Plant fibers, with their suitable length, high Young's modulus, and environmental friendliness, are widely used as reinforcement fibers in calcium silicate boards. Generally, plant fibers account for 6%-10% of the total content of calcium silicate boards, but their cost accounts for 50%-60% of the total cost. Therefore, selecting appropriate plant reinforcement fibers and fiber treatment methods can not only improve the quality of calcium silicate boards but also reduce their production costs, which is of great significance to practical industrial production.

[0003] In the traditional calcium silicate board production process, there is a lack of effective pretreatment. Waste cement bags are directly pulped using a hydraulic pulper and then used. This results in a large number of fibers not being effectively separated and broken down, and many fibers are cut and shortened, which seriously weakens the fiber reinforcement effect and causes problems such as defects on the board surface and reduced strength. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cement bag soaking device for calcium silicate boards. The device has a simple structure and is easy to operate. Using this device for cement bag soaking pretreatment can effectively soften the cement bag, protect the original length of plant fibers, stimulate their fibrillation potential, thereby improving the subsequent pulping effect and the final board quality, and reducing the overall production cost.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cement bag soaking device for calcium silicate boards, comprising a soaking tank, an inlet pipe, a drain pipe, an ultrasonic device, a steam inlet pipe, and a temperature control system;

[0006] The soaking tank has a lid on top, an inlet pipe on the lid that communicates with the interior of the soaking tank, and a valve on the inlet pipe; a drain pipe on the lower side wall of the soaking tank that communicates with the interior of the soaking tank, and a shut-off valve on the drain pipe; an ultrasonic device symmetrically arranged on the inner side wall of the soaking tank, and the ultrasonic device is electrically connected to the temperature control system; a steam inlet pipe on the lower side wall of the soaking tank that communicates with the interior of the soaking tank, and a flow control valve on the steam inlet pipe; and a temperature control system on the soaking tank, and the temperature control system is electrically connected to the flow control valve.

[0007] Preferably, the temperature control system includes a temperature controller and a temperature sensor electrically connected to the temperature controller, and the temperature controller is electrically connected to the flow control valve; the temperature controller receives the detection signal from the temperature sensor and controls the opening and closing of the flow control valve to maintain the temperature of the soaking solution at 50℃-70℃.

[0008] Preferably, the temperature controller is electrically connected to the ultrasonic device, and the temperature controller is used to control the start and stop of the ultrasonic device, and to keep the start and stop of the ultrasonic device synchronized with the start and stop of the flow control valve.

[0009] Preferably, the ultrasonic device is a rod-type ultrasonic system with a power range of 1000W-1500W and a frequency range of 25kHz-30kHz.

[0010] Preferably, the lid is hinged to the top of the soaking tank.

[0011] Preferably, the soaking tank has a rectangular structure.

[0012] Compared with the prior art, the beneficial effects of this utility model include:

[0013] (1) This utility model uses a physical pretreatment of "thermal-acoustic synergy": the temperature control system is used to precisely maintain the temperature of the soaking solution at 50°C to 70°C, and the high-frequency vibration of the ultrasonic device can quickly and evenly make the cement bag fully swell and soften, thus protecting the original length of the plant fibers to the maximum extent.

[0014] (2) The cement bag fibers treated by this utility model can achieve better fiberization effect in the subsequent pulping and pulping process, which significantly reduces the difficulty of subsequent pulp preparation, improves the quality of the final board, and reduces the overall production cost.

[0015] (2) This utility model uses a temperature controller to link with an ultrasonic device and a flow control valve to control the synchronous start and stop of heating and ultrasonication, thereby realizing the automation and standardization of the pretreatment process, which is conducive to improving product quality and reducing labor costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a cement bag soaking device for calcium silicate boards according to this utility model.

[0017] Among them, 1 is the soaking tank, 2 is the temperature control system, 3 is the ultrasonic device, 4 is the tank cover, 5 is the liquid inlet pipe, 6 is the steam inlet pipe, 7 is the liquid outlet pipe, 8 is the shut-off valve, 9 is the valve, and 10 is the flow control valve. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0019] Example

[0020] like Figure 1 The diagram shows the overall structure of a cement bag soaking device for calcium silicate board according to this utility model, including a soaking tank, an inlet pipe, an outlet pipe, an ultrasonic device, a steam inlet pipe, and a temperature control system; the soaking tank is a rectangular stainless steel tank, and the top of the soaking tank is provided with a lid, which is hinged to the top of the soaking tank by a hinge.

[0021] The lid of the tank is connected to an inlet pipe, which facilitates rapid liquid injection. A valve is installed on the inlet pipe. A steam inlet pipe is connected to the lower part of the side wall of the soaking tank, and a flow control valve is installed on the steam inlet pipe. A drain pipe is connected to the lower part of the side wall of the soaking tank, and a shut-off valve is installed on the drain pipe.

[0022] Specifically, the steam inlet pipe is located at the lower part of the side wall. Utilizing the principle that hot steam, with its low density, naturally rises, it creates upward thermal convection within the chamber, achieving uniform and efficient heating and avoiding localized overheating or temperature stratification. For convenient drainage, the drain pipe is preferably located at the lowest point of the side wall of the chamber and connects to the interior of the chamber. Combined with a shut-off valve, waste liquid can be effectively drained.

[0023] Two ultrasonic devices are symmetrically arranged on the inner wall of the soaking tank. The ultrasonic devices are electrically connected to the temperature control system. The ultrasonic devices are rod-type ultrasonic systems with a power range of 1000W-1500W and a frequency range of 25kHz-30kHz.

[0024] Specifically, the symmetrical design aims to create a uniform sound field distribution within the enclosure, ensuring that cement bags in all locations receive consistent ultrasonic treatment. The high-frequency vibrations (25-30kHz) generated by the ultrasonic device produce a "cavitation effect" in the liquid. The resulting and collapsing micro-cavitation bubbles generate extremely strong localized shock waves and microjets. This micro-mechanical force effectively tears and pulverizes the binding material between fibers and the hydrophobic layer on the surface of the cement bag, creating microscopic channels for the entry of the soaking liquid. The 1000-1500W power provides sufficient energy input, while the 25-30kHz frequency strikes a balance between the effective range and cavitation intensity.

[0025] The outer wall of the soaking tank is equipped with a temperature control system, which includes a thermostat and a temperature sensor electrically connected to the thermostat. The temperature sensor is used to measure the temperature of the soaking solution in the soaking tank. Depending on the actual needs, the temperature sensor probe can be inserted into the liquid or the wall-mounted temperature sensor can be fixed to the outside of the tank.

[0026] The temperature controller is electrically connected to the flow control valve. The temperature controller controls the opening and closing of the flow control valve according to the detection signal of the temperature sensor to maintain the temperature of the soaking solution at 50℃-70℃.

[0027] Specifically, this invention comprises a closed-loop automatic control circuit consisting of a temperature control system (including a temperature controller and a temperature sensor), a steam inlet pipe, and a flow control valve. The soaking solution temperature is set between 50 and 70 degrees Celsius, which is the optimal activation window for plant fiber swelling. At this temperature, the surface tension and viscosity of the soaking solution (usually alkaline) decrease significantly, and molecular thermal motion intensifies, allowing it to quickly penetrate into the fiber, enabling it to fully swell and soften. The temperature sensor monitors the solution temperature in real time and transmits the signal to the temperature controller, which precisely maintains the temperature by controlling the opening and closing of the flow control valve on the steam inlet pipe. This ensures the stability of the soaking conditions.

[0028] The temperature controller is electrically connected to the ultrasonic device, and the temperature controller is used to control the start and stop of the ultrasonic device, and to keep the start and stop of the ultrasonic device synchronized with the start and stop of the flow control valve.

[0029] Specifically, this invention constructs a physical pretreatment mode combining heat and ultrasound through a temperature control system and an ultrasonic device: heat softens and expands the fibers macroscopically, lowering the threshold for ultrasonic energy action; while the cavitation and mechanical effects of ultrasound open channels microscopically, allowing hot water to penetrate deeper into the fiber bundle. This invention avoids the mechanical cutting damage to the fibers caused by traditional processes. The high-frequency vibration generated by the ultrasonic device effectively breaks down the surface tension and dense structure of the cement bag, forcing the soaking solution to penetrate quickly and evenly into the fiber bundle. Cement bag fibers treated by this device can achieve better fiber separation in subsequent pulping and beating processes, reducing the workload of subsequent hydraulic pulpers and refiners, and improving the quality of the final product.

[0030] The usage process of this utility model is as follows:

[0031] 1. Feeding and Liquid Injection: When using this device, manually open the tank lid, use a crane to neatly place the cement bags into the soaking tank, close the lid, open the valve on the inlet pipe, and inject the soaking solution (workshop production circulating water, temperature approximately 25-30℃, pH value approximately 12) into the soaking tank from the top through the inlet pipe. When the soaking solution reaches the predetermined level, close the valve on the inlet pipe to stop injecting the soaking solution;

[0032] 2. Soaking: Activate the temperature control system. At this time, the temperature controller simultaneously executes two commands:

[0033] First, based on feedback from the temperature sensor, the flow control valve on the steam inlet pipe is controlled to allow steam to enter. High-temperature steam enters the bottom of the soaking tank through the steam inlet pipe and raises the temperature. The temperature control system precisely maintains the soaking solution temperature between 50℃ and 70℃: when the temperature inside the soaking tank rises to the set temperature, the temperature sensor sends an electrical signal to the temperature controller, which then sends a command to close the flow control valve on the steam inlet pipe, stopping the steam flow and maintaining the temperature; when the temperature inside the soaking tank falls below the set temperature, the temperature sensor sends an electrical signal to the temperature controller, which then sends a command to open the flow control valve on the steam inlet pipe, allowing steam to enter and raise the temperature.

[0034] Secondly, two ultrasonic devices are activated and ultrasonic treatment is carried out continuously for 4-6 hours. During this process, thermal energy and acoustic energy work together, and the temperature control system, in conjunction with the high-frequency vibration of the ultrasonic device, can quickly break the surface tension of the cement bag, ensure uniform soaking, significantly improve soaking efficiency and effect, and allow the cement bag to fully swell and soften.

[0035] 3. Discharge: After processing, stop the ultrasonic treatment and shut off the steam. Manually open the shut-off valve on the drain pipe to drain the liquid. After draining, manually operate the crane to lift the softened cement bag onto the chain conveyor and transfer it to the hydraulic pulper for pulping.

[0036] This invention precisely maintains the soaking solution temperature at 50-70℃ through a temperature control system. Combined with the high-frequency vibration of an ultrasonic device, it can quickly break the surface tension of the cement bag, ensure uniform soaking, significantly improve soaking efficiency and effect, and allow the cement bag to fully swell and soften. This reduces the difficulty of subsequent slurry preparation and ensures that the cement bag fibers have good fibrillation effect and excellent fiber length after pulping, slag removal and beating.

[0037] The above-described specific embodiments are preferred embodiments of this utility model and are not intended to limit this utility model. Any other changes or equivalent substitutions made without departing from the technical solution of this utility model are included within the protection scope of this utility model.

Claims

1. A cement bag soaking device for calcium silicate boards, characterized in that, It includes an immersion tank, an inlet pipe, an outlet pipe, an ultrasonic device, a steam inlet pipe, and a temperature control system; The soaking tank has a lid on top, an inlet pipe on the lid that communicates with the interior of the soaking tank, and a valve on the inlet pipe; a drain pipe on the lower side wall of the soaking tank that communicates with the interior of the soaking tank, and a shut-off valve on the drain pipe; an ultrasonic device symmetrically arranged on the inner side wall of the soaking tank, and the ultrasonic device is electrically connected to the temperature control system; a steam inlet pipe on the lower side wall of the soaking tank that communicates with the interior of the soaking tank, and a flow control valve on the steam inlet pipe; and a temperature control system on the soaking tank, and the temperature control system is electrically connected to the flow control valve.

2. The cement bag soaking device for calcium silicate board according to claim 1, characterized in that, The temperature control system includes a thermostat and a temperature sensor electrically connected to the thermostat. The thermostat is electrically connected to the flow control valve. The thermostat receives the detection signal from the temperature sensor and controls the opening and closing of the flow control valve to maintain the temperature of the soaking solution at 50℃-70℃.

3. The cement bag soaking device for calcium silicate board according to claim 2, characterized in that, The temperature controller is electrically connected to the ultrasonic device. The temperature controller is used to control the start and stop of the ultrasonic device and to keep the start and stop of the ultrasonic device synchronized with the start and stop of the flow control valve.

4. The cement bag soaking device for calcium silicate board according to claim 1, characterized in that, The ultrasonic device is a rod-type ultrasonic system with a power range of 1000W-1500W and a frequency range of 25kHz-30kHz.

5. The cement bag soaking device for calcium silicate board according to claim 1, characterized in that, The lid is hinged to the top of the soaking tank.

6. The cement bag soaking device for calcium silicate board according to claim 1, characterized in that, The soaking tank has a rectangular structure.

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