Novel ultrasonic papermaking pulping device

Abstract

The invention provides a novel ultrasonic papermaking pulping device, which belongs to the technical field of papermaking, and comprises a pulp box body, the circumferential surface of the pulp box body is provided with a feed port and a discharge port, the top end of the pulp box body is provided with twenty-nine ultrasonic vibration rods, the bottom ends of the rods are connected with an ultrasonic generator, and the center of the bottom end is provided with a valve; the invention aims to solve the problems of high energy consumption, high cost, complex flow, environmental pollution and the like of the traditional pulping process, utilizes the mechanical effect, the cavitation effect and the frequency characteristic of ultrasonic waves to pulp, can separate fibers and does not generate excessive byproducts, and compared with the traditional pulping, the device is low in energy consumption, low in cost and simple to install, and part of equipment can be continuously used; the tank body is reasonable in design, can ensure uniform slurry dispersion, uniform fiber distribution and stable finished products, and is convenient to clean and overhaul.

Description

Technical Field

[0001] The invention belongs to the technical field of papermaking, and in particular relates to a novel ultrasonic papermaking beating device. Background Art

[0002] The traditional papermaking pulping process mainly relies on disc grinding. According to the output of 100 tons per day, a 720-type disc grinding machine is required. Each disc grinding machine has a power of 355 kWh, totaling 1,420 kWh. If the machine works 18 hours a day and the electricity fee is 0.5 yuan, the total electricity consumption is as high as 12,789 yuan, which is equivalent to 127.8 yuan per ton of paper. In addition, the traditional pulping process uses disc grinding to separate and broom the complete fibers, which is complicated and requires many equipment such as disc grinding and deflaking machines, which is costly. In addition, the traditional pulping process will also produce highly colored substances with stable resonance during operation, which increases energy consumption and environmental pollution.

[0003] Therefore, a new type of ultrasonic papermaking pulping device is designed, which uses the mechanical effect and cavitation effect of ultrasound to impact and erode the fiber raw materials, and selectively acts on cellulose, hemicellulose and lignin components based on the frequency characteristics of ultrasound, so as to separate the fibers and complete the pulping process. Although temperature will be generated during the operation of ultrasonic pulping, it can be cooled at the same time when the slurry passes through. The operating pressure is normal pressure or pressure, and basically no resonant and stable highly colored substances are generated, which reduces energy consumption and environmental pollution. Compared with traditional pulping, the total power of ultrasound is only 72.5 kWh, and the electricity consumption per ton of paper is only 13.05 yuan, which is only one-tenth of that of traditional pulping. Moreover, the new device only needs to be simply installed in the traditional papermaking pulping system, and some auxiliary equipment such as vertical pulpers can continue to be used. The disc grinding and debonding machine can be omitted to achieve the pulp required for papermaking. The shape and structure of the tank are reasonably designed to ensure uniform dispersion of the pulp, uniform distribution of fibers after processing, stable finished products, and convenient cleaning and maintenance. Summary of the invention

[0004] The purpose of the present invention is to provide a new type of ultrasonic papermaking pulping device, which aims to solve the problem of the traditional pulping process in the prior art using a disc grinder to separate and refine complete fibers. The process is complicated and requires many equipment such as a disc grinder and a deflaker, which is costly. In addition, the traditional pulping process will also produce resonant and stable highly colored substances during operation, which increases the problems of energy consumption and environmental pollution.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The new ultrasonic papermaking pulping device comprises:

[0007] A slurry box body, wherein a feed port and a discharge port are fixedly connected to the circumferential surface of the slurry box body, twenty-nine ultrasonic vibration rods are installed on the top of the slurry box body, and the bottom ends of the twenty-nine ultrasonic vibration rods are fixedly connected to ultrasonic generators, and a valve is arranged at the center of the bottom end of the slurry box body.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] 1. In this scheme, the total power of ultrasonic waves is only 72.5 kWh, and the electricity cost per ton of paper is only 13.05 yuan, which is only one tenth of the traditional pulping. In addition, the new device only needs to be simply installed in the traditional papermaking pulping system, and some equipment can continue to be used, eliminating the need for equipment such as disc grinding and de-spinning machines, thus reducing equipment costs;

[0010] Second, the mechanical effect, cavitation effect and frequency characteristics of ultrasound are used to beat the fiber raw materials, so that the fibers are separated to complete the beating process. This does not require the involvement of complex equipment such as disc grinding and deflaking machines in traditional pulping processes, greatly simplifying the process.

[0011] 2. In this scheme, although temperature will be generated during the operation of ultrasonic pulping, the slurry can be cooled simultaneously when passing through. The operating pressure is normal pressure or pressurized, and basically no resonantly stable highly colored substances are generated, thus reducing energy consumption and environmental pollution. The new ultrasonic papermaking pulping device has made effective improvements on the problems of the traditional pulping process, and has brought significant beneficial effects in terms of energy consumption, cost, process and environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 A perspective view of the present invention;

[0014] Figure 2 It is a cutaway stereogram of the present invention from a first viewing angle;

[0015] Figure 3 It is a sectional stereoscopic view from a second viewing angle of the present invention.

[0016] In the figure: 1. slurry box; 2. discharge port; 3. feed port; 4. ultrasonic vibration rod; 5. ultrasonic generator. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1

[0019] See also Figure 1-Figure 3 , the present invention provides the following technical solutions:

[0020] The new ultrasonic papermaking pulping device comprises:

[0021] A slurry box 1 has a feed inlet 3 and a discharge outlet 2 fixedly connected to its circumferential surface, twenty-nine ultrasonic vibration rods 4 are installed at the top of the slurry box 1, and the bottom ends of the twenty-nine ultrasonic vibration rods 4 are fixedly connected to ultrasonic generators 5, and a valve is provided at the bottom center of the slurry box 1.

[0022] In the specific embodiment of the present invention, 1. Principle: Ultrasonic waves will produce cavitation when propagating. When the cavitation bubbles burst, high pressure and strong shock waves will be generated in a very small space, and energy will be released at the same time, so that micro-voids will be generated in the fibers, resulting in an increase in the fiber specific surface area and an increase in the reaction activity. Ultrasonic pulping is a new type of pulp production process, which uses the mechanical effect and cavitation effect of ultrasonic waves to impact and erode the fiber raw materials, and selectively acts on cellulose, hemicellulose and lignin components based on the frequency characteristics of ultrasonic waves to separate the fibers, thereby completing the pulping process; 2. Mechanical effect and cavitation effect: During the ultrasonic pulping process, water is used as the ultrasonic wave transmission medium, and the mechanical effect and cavitation effect of ultrasonic waves impact and erode the fiber raw materials; the mechanical effect refers to the vibration generated when ultrasonic waves propagate in the medium, and the cavitation effect refers to the formation of tiny bubbles in the liquid under the action of ultrasonic waves, and these bubbles will generate strong shock waves and high temperatures when they burst, thereby crushing and stripping the fiber raw materials; 3. Selective action: The frequency characteristics of ultrasonic waves enable it to selectively act on cellulose, hemicellulose and lignin components;This selective action helps to effectively separate fibers and improve the quality of pulp without producing too many by-products. The slurry box 1 is the core component of the entire device. Its solid structure can withstand the internal pressure and vibration during ultrasonic pulping to ensure the safety and stability of operation. Its good sealing can prevent slurry leakage, avoid pollution to the working environment, and ensure that various physical and chemical reactions in the pulping process are carried out in a controlled environment. The design position and size of the feed port 3 and the discharge port 2 have been carefully considered to ensure that the slurry can flow smoothly and quickly into the slurry box to avoid blockage or uneven feeding. At the same time, the connection method of the feed port facilitates rapid and stable docking with the upstream slurry supply pipeline, and the position and shape design of the discharge port are conducive to the smooth discharge of the pulped slurry, reduce resistance, and improve discharge efficiency. Its size can flexibly adjust the discharge speed according to actual production needs to meet the requirements of different production rhythms. Twenty-nine ultrasonic vibration rods 4 and ultrasonic generators 5: twenty-nine ultrasonic The ultrasonic vibration rods are evenly distributed on the top of the slurry box. This layout can evenly transfer the energy of the ultrasonic wave to all parts of the slurry, avoiding the situation of insufficient or excessive local treatment. The high-frequency electrical energy generated by the ultrasonic generator is accurately converted into mechanical vibration energy, which effectively acts on the fibers in the slurry through the ultrasonic vibration rod, making the fiber separation more delicate and uniform. At the same time, this design can also flexibly adjust the frequency and intensity of the ultrasonic wave according to different types of fiber raw materials and pulping requirements to achieve the best pulping effect. The valve at the center of the bottom of the slurry box: The valve uses high-quality sealing materials and advanced manufacturing technology to ensure that there will be no leakage in the closed state. It is simple and convenient to operate, can be opened or closed quickly, and is convenient for operators to perform cleaning operations. The valve is located at the center of the bottom of the slurry box, which can discharge the residual slurry in the box to the greatest extent, ensuring that there is no dead angle for cleaning, and providing a clean and hygienic environment for the next pulping operation, thereby ensuring the quality and stability of each pulping. ;

[0023] The working principle and use process of the present invention:

[0024] Feeding: The slurry to be treated flows smoothly and quickly into the slurry box 1 through the feed port 3. The design position and size of the feed port ensure that the slurry will not be blocked or the feeding will be uneven;

[0025] Ultrasonic beating: The twenty-nine ultrasonic vibration rods 4 at the top of the slurry box 1 generate high-frequency vibrations driven by the ultrasonic generator 5. When the ultrasonic wave propagates in the slurry with water as the conductive medium, it uses its mechanical effect and cavitation effect to impact and erode the fiber raw material. The mechanical effect causes the ultrasonic wave to vibrate when it propagates in the medium, and the cavitation effect causes tiny bubbles to form in the liquid. When the bubbles burst, strong shock waves and high temperatures are generated to break and peel the fiber raw material. At the same time, the ultrasonic wave selectively acts on the cellulose, hemicellulose and lignin components based on its frequency characteristics to separate the fibers and complete the beating process. This selective action helps to effectively separate the fibers without producing too many by-products, thereby improving the quality of the pulp;

[0026] Discharging: The slurry after beating is discharged smoothly through the discharge port 2. The position and shape design of the discharge port reduces resistance and improves the discharge efficiency. The size of the discharge port can flexibly adjust the discharge speed according to actual production needs to meet the requirements of different production rhythms;

[0027] Cleaning: After the pulping work is completed, open the valve at the bottom center of the slurry box 1. Since the valve is located at the bottom center of the box, it can discharge the residual slurry in the box to the greatest extent, ensuring that there are no dead angles in the cleaning. The valve adopts high-quality sealing materials and advanced manufacturing technology. There will be no leakage in the closed state. The operation is simple and convenient, which is convenient for the operator to carry out cleaning operations, providing a clean and hygienic environment for the next pulping operation, thereby ensuring the quality and stability of each pulping.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new ultrasonic papermaking beating device, characterized in that: include: A slurry box (1), wherein a feed port (3) and a discharge port (2) are fixedly connected to the circumferential surface of the slurry box (1), twenty-nine ultrasonic vibration rods (4) are installed at the top of the slurry box (1), and the bottom ends of the twenty-nine ultrasonic vibration rods (4) are fixedly connected to ultrasonic generators (5), and a valve is arranged at the center of the bottom end of the slurry box (1).

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