CN114713060A - A slurry mixing device with space-time heterogeneous circulating jet coupling - Google Patents
A slurry mixing device with space-time heterogeneous circulating jet coupling Download PDFInfo
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- 238000002156 mixing Methods 0.000 title claims abstract description 125
- 239000002002 slurry Substances 0.000 title claims abstract description 50
- 230000008878 coupling Effects 0.000 title claims description 15
- 238000010168 coupling process Methods 0.000 title claims description 15
- 238000005859 coupling reaction Methods 0.000 title claims description 15
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- 238000005188 flotation Methods 0.000 abstract description 14
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/16—Flotation machines with impellers; Subaeration machines
- B03D1/18—Flotation machines with impellers; Subaeration machines without air supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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Abstract
Description
技术领域technical field
本发明涉及煤泥分选回收技术领域,尤其涉及一种时空非均态循环射流耦合的调浆装置。The invention relates to the technical field of coal slime sorting and recovery, in particular to a slurry conditioning device coupled with a space-time non-uniform circulating jet.
背景技术Background technique
浮选是针对煤炭与矿物资源最经济有效的分选方法,对细粒级低品位煤与矿石中有价资源的规模化回收具有突出贡献。浮选过程利用颗粒的表界面性质进行,表面疏水性好的颗粒易与气泡附着作为精矿上浮,亲水的脉石颗粒则留在矿浆中作为尾矿排出。随着机械化开采与重介质选矿工艺的普遍应用,入浮煤泥量多、连生体含量大、有效分选范围窄等问题日渐突显。因此完善浮选设备,精炼分选工艺,扩宽浮选范围,提高分选效率,是应对当前煤炭资源难题的重要举措。Flotation is the most economical and effective separation method for coal and mineral resources, and has made outstanding contributions to the large-scale recovery of valuable resources in fine-grained low-grade coal and ore. The flotation process is carried out by using the surface and interface properties of the particles. The particles with good surface hydrophobicity are easily attached to the air bubbles and float as concentrates, while the hydrophilic gangue particles remain in the slurry and are discharged as tailings. With the widespread application of mechanized mining and heavy-medium beneficiation technology, the problems of large amount of coal slurry entering the floating, large content of conjoined bodies, and narrow effective separation range have become increasingly prominent. Therefore, improving the flotation equipment, refining the separation process, expanding the flotation range, and improving the separation efficiency are important measures to deal with the current coal resource problems.
调浆是煤泥精确分选的基础,其主要作用是通过叶轮高速剪切搅拌,实现传统非极性类捕收剂在矿浆中分散,增强捕收剂油滴与煤泥颗粒间的选择性碰撞吸附,提高精煤颗粒与脉石矿物间的疏水性差异。传统矿物浮选调浆设备受内部搅拌结构限制,矿浆混合性弱,细颗粒随水性强,与药剂分子碰撞黏附概率低,对宽粒级的煤泥入料条件适应性差,难以有效脱除粗颗粒表面罩盖的细泥。低水平的调浆结果加剧了后续浮选作业负担,使得浮选机内的机械搅拌强度被动提高,恶化浮选过程流场环境,增大颗粒气泡间的脱附概率,不利于颗粒浮选回收。Slurry mixing is the basis for the precise sorting of coal slime. Its main function is to realize the dispersion of traditional non-polar collectors in the slurry through high-speed shearing and stirring of the impeller, and enhance the selectivity between the collector oil droplets and the coal slime particles. Collision adsorption improves the hydrophobicity difference between clean coal particles and gangue minerals. The traditional mineral flotation and slurry preparation equipment is limited by the internal stirring structure, the mixing of the slurry is weak, the fine particles are strong with water, the probability of collision and adhesion with the chemical molecules is low, and the adaptability to the feeding conditions of wide-grained coal slime is poor, and it is difficult to effectively remove coarse particles. The fine mud that covers the surface of the particles. The low-level slurry mixing result aggravates the burden of subsequent flotation operations, which makes the mechanical stirring intensity in the flotation machine passively increased, deteriorates the flow field environment during the flotation process, increases the probability of desorption between particle bubbles, and is not conducive to particle flotation recovery. .
高效调浆一方面需要脱除精煤颗粒表面细泥暴露出新鲜表面,另一方面需要使矿浆和药剂充分分散实现有效接触。传统均匀流场中颗粒随水流流动,不利于颗粒药剂碰撞摩擦,达成能量的有效输配。On the one hand, high-efficiency slurry mixing needs to remove the fine mud on the surface of clean coal particles to expose the fresh surface; In the traditional uniform flow field, the particles flow with the water flow, which is not conducive to the collision and friction of the particles and the effective energy transmission and distribution.
发明内容SUMMARY OF THE INVENTION
鉴于上述的分析,本发明实施例旨在提供一种时空非均态循环射流的调浆装置,用以解决现有调浆装置中颗粒药剂碰撞效果差的问题。In view of the above analysis, the embodiments of the present invention aim to provide a pulp conditioning device with a space-time non-uniform circulating jet, so as to solve the problem of poor collision effect of particles and chemicals in the existing pulp conditioning device.
本发明提供了一种时空非均态循环射流耦合的调浆装置,包括搅拌桶体和循环射流组件,所述搅拌桶体为倒锥台状结构,所述循环射流组件设于所述搅拌桶体的外部,所述循环射流组件与所述搅拌桶体连通形成射流循环通路。The present invention provides a slurry mixing device with space-time non-uniform circulating jet coupling, comprising a stirring barrel and a circulating jet assembly, wherein the stirring barrel is an inverted cone-shaped structure, and the circulating jet assembly is arranged in the stirring barrel Outside the body, the circulating jet assembly communicates with the mixing barrel to form a jet circulation passage.
进一步地,所述搅拌桶体内上部为无搅拌区,下部为搅拌区,所述搅拌区设有多段调浆室,所述调浆室内设有搅拌叶轮。Further, the upper part of the stirring barrel is a non-stirring zone, and the lower part is a stirring zone, the stirring zone is provided with a multi-stage mixing chamber, and the mixing chamber is provided with a stirring impeller.
进一步地,所述搅拌区内所述搅拌叶轮的直径自上而下依次减小,所述搅拌区内底端的所述调浆室内的搅拌叶轮为直叶式叶轮,所述搅拌区内上部的所述调浆室内的搅拌叶轮为斜叶式叶轮。Further, the diameter of the stirring impeller in the stirring zone decreases sequentially from top to bottom, the stirring impeller in the mixing chamber at the bottom end of the stirring zone is a straight-blade impeller, and the upper part of the stirring zone is The stirring impeller in the mixing chamber is a slant-blade impeller.
进一步地,所述搅拌桶体内设有搅拌隔板,所述搅拌隔板为圆环状,且水平设于所述搅拌桶体的内壁上。Further, a stirring baffle is arranged in the stirring barrel, and the stirring baffle is annular and is horizontally arranged on the inner wall of the stirring barrel.
进一步地,所述搅拌桶体内水平设有矿浆剪切盘,所述矿浆剪切盘安装在所述搅拌桶体内的搅拌轴上,所述矿浆剪切盘与所述搅拌隔板之间留有间隙。Further, a pulp shearing disk is horizontally arranged in the mixing barrel, the pulp shearing disk is installed on the stirring shaft in the mixing barrel, and there is a space between the pulp shearing disk and the stirring baffle. gap.
进一步地,在所述搅拌轴上所述搅拌叶轮与所述矿浆剪切盘交替设置,且所述矿浆剪切盘比所述搅拌叶轮少一个,所述搅拌轴的底端设有所述直叶式叶轮。Further, on the stirring shaft, the stirring impeller and the pulp shearing disc are alternately arranged, and the pulp shearing disc is one less than the stirring impeller, and the straight shaft is provided at the bottom end of the stirring shaft. Vane impeller.
进一步地,所述搅拌桶体内还开设有上循环口和下循环口,所述上循环口设于所述搅拌区内的顶部所述调浆室的侧壁上,所述下循环口设于所述搅拌区内的底部所述调浆室的侧壁上。Further, an upper circulation port and a lower circulation port are also opened in the stirring barrel. on the side wall of the pulp mixing chamber at the bottom of the stirring zone.
进一步地,所述上循环口不低于同一所述调浆室内所述搅拌叶轮的安装高度,所述下循环口位于同一所述调浆室内所述搅拌叶轮的下方。Further, the upper circulation port is not lower than the installation height of the stirring impeller in the same pulp mixing chamber, and the lower circulation port is located below the stirring impeller in the same pulp mixing chamber.
进一步地,所述搅拌桶体的底部设有入料口,所述下循环口的中心轴线与所述搅拌桶体的侧壁成30°~45°夹角,且正对所述入料口。Further, the bottom of the mixing barrel is provided with a feeding port, and the central axis of the lower circulation port forms an included angle of 30° to 45° with the side wall of the mixing barrel, and faces the feeding port. .
进一步地,所述循环射流组件包括循环泵、循环管和射流吸药喉管,所述上循环口、所述循环管、所述循环泵、所述射流吸药喉管和所述下循环口依次连通形成所述射流循环通路。Further, the circulating jet assembly includes a circulating pump, a circulating pipe and a jet drug suction throat, the upper circulation port, the circulating pipe, the circulating pump, the jet drug suction throat and the lower circulating port. The jet circulation passages are sequentially connected to form the jet circulation passages.
与现有技术相比,本发明至少可实现如下有益效果之一:Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:
(1)本发明的调浆装置,搅拌桶体为倒锥台形结构,随着矿浆流动,搅拌桶内流场处于空间非均匀态,能够提高矿浆紊流度,增加矿浆中颗粒药剂的碰撞,有利于后续颗粒浮选回收;(1) In the slurry mixing device of the present invention, the mixing barrel has an inverted cone-shaped structure, and with the flow of the ore pulp, the flow field in the mixing barrel is in a spatially non-uniform state, which can improve the turbulence degree of the ore slurry and increase the collision of the granules in the ore slurry. It is beneficial to the subsequent particle flotation recovery;
(2)本发明的调浆装置,合理采用不同大小和样式的搅拌叶轮,充分利用能量输入的同时有效保护主轴减少主轴磨损;倒锥台形桶体和上大下小的叶轮设计可以保证药剂在进入桶体时,在直叶式叶轮和循环射流的双重作用下在较小的腔体空间内充分分散,有效乳化,后在较大斜叶式叶轮的作用下带动整体矿浆流动,促使药剂矿浆接触均匀,并且符合扭矩分步,保护搅拌轴,减少故障发生率;(2) The pulp mixing device of the present invention reasonably adopts stirring impellers of different sizes and styles, making full use of energy input while effectively protecting the main shaft and reducing main shaft wear; When entering the barrel, under the double action of the straight-blade impeller and the circulating jet, it is fully dispersed in the smaller cavity space, effectively emulsified, and then driven by the larger oblique-blade impeller to drive the overall slurry flow to promote the chemical slurry. The contact is uniform, and it conforms to the torque step-by-step, protecting the stirring shaft and reducing the failure rate;
(3)本发明的调浆装置,电机能量非均匀输入,桶内流场呈现时间非均匀流态,有利于颗粒药剂碰撞摩擦,达成能量的有效输配,颗粒与水流间形成速度差,表面水压变化形成水力空化效应,脱除表面细泥;(3) In the slurry mixing device of the present invention, the energy of the motor is input non-uniformly, and the flow field in the barrel presents a non-uniform flow state in time, which is conducive to the collision and friction of the particle medicine, and achieves effective energy transmission and distribution. The change of water pressure forms the hydraulic cavitation effect and removes the fine mud on the surface;
(4)本发明的调浆装置,采用循环射流吸药,药剂由负压吸入矿浆,随着水流进入桶体时压力骤降有效分散乳化,直叶式叶轮强制搅拌提高药剂分散程度,提高颗粒药剂接触概率,减少药剂用量;(4) The pulp mixing device of the present invention adopts the circulating jet to absorb the medicine, the medicine is sucked into the pulp by negative pressure, and the pressure drops suddenly when the water flow enters the barrel, and the pressure drops and the emulsification effectively disperses and emulsifies. The probability of contact with the agent, reducing the dosage of the agent;
(5)本发明的调浆装置,下循环口与搅拌桶体呈30°~45°夹角,直对入料口,形成对冲流增大矿浆紊流度进一步加强药剂乳化分散;(5) In the pulp mixing device of the present invention, the lower circulation port and the mixing barrel are at an angle of 30° to 45°, and are directly opposite to the feeding port, forming a countercurrent to increase the turbulence of the pulp and further strengthen the emulsification and dispersion of the medicine;
(6)本发明的调浆装置,时空非均态流场循环射流耦合作用提高矿浆紊流度,减少药剂使用量,提高能量输配效率,提升矿浆预处理水平,为下一步高效浮选工艺奠定基础;(6) In the pulp conditioning device of the present invention, the coupling effect of the time-space non-uniform flow field circulating jet can improve the turbulence of the pulp, reduce the dosage of chemicals, improve the efficiency of energy transmission and distribution, and improve the pretreatment level of the pulp, which is the next high-efficiency flotation process. lay the foundation;
(7)本发明的调浆装置,通过采用双通道射流循环乳化加药和时空非均态强制搅拌耦合调浆实现高效选前调浆,有利于短流程的高效浮选工艺开发。(7) The slurry conditioning device of the present invention realizes high-efficiency pre-selection slurry conditioning by adopting dual-channel jet circulating emulsification dosing and spatiotemporal non-uniform forced stirring coupling slurry conditioning, which is beneficial to the development of a short-flow high-efficiency flotation process.
本发明中,上述各技术方案之间还可以相互组合,以实现更多的优选组合方案。本发明的其他特征和优点将在随后的说明书中阐述,并且,部分优点可从说明书中变得显而易见,或者通过实施本发明而了解。本发明的目的和其他优点可通过说明书以及附图中所特别指出的内容中来实现和获得。In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination solutions. Additional features and advantages of the invention will be set forth in the description which follows, and some of the advantages may become apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by means of particularly pointed out in the description and drawings.
附图说明Description of drawings
附图仅用于示出具体实施例的目的,而并不认为是对本发明的限制,在整个附图中,相同的参考符号表示相同的部件。The drawings are for the purpose of illustrating specific embodiments only and are not to be considered limiting of the invention, and like reference numerals refer to like parts throughout the drawings.
图1为具体实施例的时空非均态循环射流耦合调浆装置结构示意图;1 is a schematic structural diagram of a space-time non-uniform circulating jet coupling slurry conditioning device according to a specific embodiment;
图2为具体实施例的时空非均态循环射流耦合调浆装置俯视图。FIG. 2 is a top view of a space-time heterogeneous circulating jet coupling slurry conditioning device according to a specific embodiment.
附图标记:Reference number:
1搅拌桶体;2桶盖;3电机;4搅拌轴;5入料口;6溢流口;7直叶式叶轮;8斜叶式叶轮;9搅拌挡板;10搅拌隔板;11矿浆剪切盘;12上循环口;13下循环口;14清水补充口;15药剂桶;16循环泵;17循环管;18射流吸药喉管。1 mixing barrel body; 2 barrel cover; 3 motor; 4 mixing shaft; 5 feeding port; 6 overflow port; 7 straight-blade impeller; 8 oblique-blade impeller; Shearing disc; 12 upper circulation port; 13 lower circulation port; 14 fresh water replenishment port; 15 medicine barrel; 16 circulation pump; 17 circulation pipe; 18 jet suction throat.
具体实施方式Detailed ways
下面结合附图来具体描述本发明的优选实施例,其中,附图构成本发明一部分,并与本发明的实施例一起用于阐释本发明的原理,并非用于限定本发明的范围。The preferred embodiments of the present invention are specifically described below with reference to the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention, and together with the embodiments of the present invention, are used to explain the principles of the present invention, but not to limit the scope of the present invention.
在本发明实施例的描述中,需要说明的是,除非另有明确的规定和限定,术语“相连”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接,可以是机械连接,也可以是电连接,可以是直接相连,也可以通过中间媒介间接相连。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified and limited, the term "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection , which can be mechanical connection, electrical connection, direct connection, or indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
全文中描述使用的术语“顶部”、“底部”、“在……上方”、“下”和“在……上”是相对于装置的部件的相对位置,例如装置内部的顶部和底部衬底的相对位置。可以理解的是装置是多功能的,与它们在空间中的方位无关。The terms "top," "bottom," "above," "under," and "over" as used throughout the description are relative positions with respect to components of a device, such as top and bottom substrates inside the device relative position. It is understood that the devices are multifunctional regardless of their orientation in space.
本发明的一个具体实施例,如图1、图2所示,公开了一种时空非均态循环射流耦合的调浆装置(以下简称调浆装置),包括搅拌桶体1和循环射流组件,搅拌桶体1为倒锥台状结构,循环射流组件设于搅拌桶体1的外部,用于射流加药,循环射流组件与搅拌桶体1连通形成射流循环通路。A specific embodiment of the present invention, as shown in Figures 1 and 2, discloses a slurry conditioning device (hereinafter referred to as a slurry conditioning device) coupled with a space-time heterogeneous circulating jet, comprising a stirring barrel 1 and a circulating jet assembly, The mixing barrel 1 is an inverted truncated cone structure. The circulating jet assembly is arranged outside the mixing barrel 1 for jet dosing. The circulating jet assembly communicates with the mixing barrel 1 to form a jet circulation passage.
与现有技术相比,本实施例提供的调浆装置,搅拌桶体为倒锥台形结构,随着矿浆流动,搅拌桶内流场处于空间非均匀态,能够提高矿浆紊流度,增加矿浆中颗粒药剂的碰撞,有利于后续颗粒浮选回收;采用循环射流吸药,药剂由负压吸入矿浆,随着水流进入倒锥台形的搅拌桶体时压力骤降有效分散乳化,有利于药剂的均匀分散,提高药剂与矿浆充分融合。Compared with the prior art, in the slurry mixing device provided in this embodiment, the mixing barrel has an inverted cone-shaped structure, and with the flow of the ore slurry, the flow field in the mixing barrel is in a spatially non-uniform state, which can improve the turbulent flow of the ore slurry and increase the amount of the ore pulp. The collision of medium particles is beneficial to the subsequent particle flotation recovery; the circulating jet is used to absorb the medicine, and the medicine is sucked into the pulp by negative pressure. When the water flow enters the inverted cone-shaped stirring barrel, the pressure drops and the emulsification effectively disperses and emulsifies, which is conducive to the recovery of the medicine. Evenly disperse, improve the full integration of the agent and the pulp.
为了避免搅拌桶体1内的矿浆从搅拌桶体1的上端溢出及承载动力单元,搅拌桶体1的上端设有桶盖2。桶盖2的上端设有动力单元,为矿浆搅拌提供动力。In order to prevent the slurry in the mixing barrel 1 from overflowing from the upper end of the mixing barrel 1 and carrying the power unit, the upper end of the mixing barrel 1 is provided with a barrel cover 2 . The upper end of the barrel cover 2 is provided with a power unit to provide power for the stirring of the pulp.
动力单元包括电机3和动力传动机构,电机3通过动力传动机构将动力传递给设置在搅拌桶体1内的搅拌轴4。The power unit includes a motor 3 and a power transmission mechanism. The motor 3 transmits power to the stirring shaft 4 arranged in the stirring barrel 1 through the power transmission mechanism.
搅拌轴4的一端穿过桶盖2与动力传动机构连接,另一端位于搅拌桶体1内,呈悬臂状。具体地,桶盖2的中间设有通孔,通孔内设有轴承,搅拌轴4穿过轴承与动力传动机构连接。One end of the stirring shaft 4 is connected to the power transmission mechanism through the barrel cover 2 , and the other end is located in the stirring barrel 1 and is in a cantilever shape. Specifically, a through hole is formed in the middle of the barrel cover 2, a bearing is arranged in the through hole, and the stirring shaft 4 is connected to the power transmission mechanism through the bearing.
动力传动机构可以是齿轮传动机构、链轮传动机构或皮带传动机构,优选地,动力传动机构为皮带传动机构。The power transmission mechanism may be a gear transmission mechanism, a sprocket transmission mechanism or a belt transmission mechanism, preferably, the power transmission mechanism is a belt transmission mechanism.
本实施例中,电机3通过皮带传动机构将动力传递给搅拌轴4,与啮合传动相比,皮带传动机构结构简单,制造成本低,安装维护方便,由于皮带富有弹性,可以缓和冲击和振动,使得调浆装置在调浆过程中运行平稳,工作时噪音较低。In this embodiment, the motor 3 transmits the power to the stirring shaft 4 through the belt transmission mechanism. Compared with the meshing transmission, the belt transmission mechanism has a simple structure, low manufacturing cost, and convenient installation and maintenance. The pulp mixing device runs smoothly during the pulp mixing process, and the noise is low during operation.
电机3为变频电机,且电机3呈非匀速转动,速度自600r/s~800r/s均匀往复变化形成时间不均匀流场。又由于搅拌桶体1为倒锥台式桶体,矿浆于搅拌桶体1内呈空间不均匀流动,电机3的非匀速转动形成的时间不均匀流场与倒锥台式搅拌桶体1形成的空间不均匀流场结合,形成时空不均匀流场,再耦合以循环射流吸药,既加强搅拌分散药剂又增加能量输配梯度,节省用电。The motor 3 is a variable frequency motor, and the motor 3 rotates at a non-uniform speed, and the speed is uniformly reciprocated from 600 r/s to 800 r/s to form a time-uniform flow field. In addition, because the mixing barrel 1 is an inverted cone-type barrel, the ore slurry flows unevenly in space in the mixing barrel 1, and the uneven time flow field formed by the non-uniform rotation of the motor 3 and the space formed by the inverted-cone table-type mixing barrel 1. The non-uniform flow field is combined to form a time-space non-uniform flow field, and then coupled to the circulating jet to absorb the medicine, which not only strengthens the stirring and dispersing of the medicine, but also increases the energy transmission and distribution gradient, saving electricity.
考虑到搅拌桶体1内的矿浆有时需要稀释,避免矿浆粘稠影响调浆效果及不利于搅拌轴4的转动,桶盖2上开设有清水补加口14,清水补加管与清水补加口14连通,清水补加管上设有阀门,当需要向搅拌桶体1内补加清水时,打开阀门即可。Considering that the ore pulp in the mixing barrel 1 sometimes needs to be diluted to avoid the viscosity of the ore pulp affecting the mixing effect and the rotation of the stirring shaft 4, the barrel cover 2 is provided with a fresh
可理解地,为了将矿浆原料送入搅拌桶体1内,及将搅拌好的矿浆输出搅拌桶体1外,搅拌桶体1设有入料口5和溢流口6,具体地,入料口5位于搅拌桶体1的下部,溢流口6设于搅拌桶体1的上部。Understandably, in order to feed the raw material of the ore pulp into the mixing barrel 1 and output the stirred ore slurry to the outside of the mixing barrel 1, the mixing barrel 1 is provided with a feeding
本实施例中,由于搅拌桶体1内的矿浆是自下方向上运动,当下方的矿浆足够多时,矿浆才向上流动,即矿浆需要向上的推力,为了便于矿浆更好的向上运动,入料口5设于搅拌桶体1的下端的中间,即入料口5位于倒锥台的小底面的中间。In this embodiment, since the ore slurry in the mixing barrel 1 moves from the bottom up, the ore slurry flows upward only when there is enough ore slurry below, that is, the ore slurry needs upward thrust. In order to facilitate the better upward movement of the ore slurry, the feeding
本实施例中,溢流口6位于搅拌桶体1的柱面的上端,临近桶盖2设置。In this embodiment, the
搅拌桶体1内入料口5至溢流口6设有多段调浆室,调浆室内设有搅拌叶轮,通过搅拌叶轮对矿浆进行搅拌。优选地,搅拌桶体1内设有三段调浆室。The mixing barrel 1 is provided with a multi-stage pulp mixing chamber from the feeding
搅拌叶轮的直径自上而下逐渐减小,最上方搅拌叶轮和最下方搅拌叶轮的直径比在4:3到2:1之间,中间的搅拌叶轮直径居于上下搅拌叶轮之间。The diameter of the stirring impeller gradually decreases from top to bottom. The diameter ratio of the top stirring impeller and the bottom stirring impeller is between 4:3 and 2:1, and the diameter of the middle stirring impeller is between the upper and lower stirring impellers.
搅拌桶体1内设有搅拌隔板10,搅拌隔板10为圆环状,水平设于搅拌桶体1的内壁上。本实施例中,搅拌隔板10设有3个,由于搅拌桶体1为倒锥台式结构,因而3个搅拌隔板10的外径不相等。The stirring barrel 1 is provided with a stirring
为了达到更好的调浆目的,搅拌桶体1内还设有矿浆剪切盘11,矿浆剪切盘11水平设于搅拌桶体1内,且安装在搅拌轴4上,在搅拌轴4的带动下对矿浆进行剪切。In order to achieve a better purpose of slurry mixing, the mixing barrel 1 is also provided with a pulp shearing disc 11, which is horizontally arranged in the mixing barrel 1 and installed on the mixing shaft 4. The pulp is sheared under the drive.
矿浆剪切盘11为圆形盘状结构,固设在搅拌轴4上,为了提高对矿浆的剪切效果,矿浆剪切盘11上对称设有多个长孔,长孔沿矿浆剪切盘11的径向开设,圆周方向排列。长孔的一侧边缘下翻,下翻边缘低于矿浆剪切盘11的下表面。The pulp shearing disc 11 has a circular disc-shaped structure and is fixed on the stirring shaft 4. In order to improve the shearing effect on the pulp, the pulp shearing disc 11 is symmetrically provided with a plurality of long holes, and the long holes are along the pulp shearing disc. 11 is opened in the radial direction and arranged in the circumferential direction. One edge of the long hole is turned down, and the downturned edge is lower than the lower surface of the pulp shearing disc 11 .
本实施例中,在矿浆剪切盘11上开设长孔,即能够用于矿浆通过,又能够利用长孔下翻的边缘增加剪切力。In this embodiment, long holes are opened on the pulp shearing disc 11, which can not only be used for the passage of the pulp, but also can increase the shearing force by using the edge of the long hole turned downward.
矿浆剪切盘11的数量比搅拌隔板10少一个,矿浆剪切盘11自搅拌桶体1的下端开始与搅拌隔板10正对设置,矿浆剪切盘11与搅拌隔板10之间留有间隙,用于矿浆中粗颗粒通过,防止矿浆中粗颗粒造成搅拌叶轮卡壳。The number of pulp shearing discs 11 is one less than that of the stirring baffles 10. The pulping shearing discs 11 are arranged from the lower end of the stirring barrel 1 to face the stirring baffles 10. There is a gap for the passage of coarse particles in the pulp to prevent the agitating impeller from jamming caused by the coarse particles in the pulp.
本实施例中,矿浆剪切盘11设有2个,分别与设于搅拌桶体1内下方的两个搅拌隔板10正对设置。In the present embodiment, there are two pulp shearing discs 11 , which are respectively disposed opposite to the two stirring
需要说明的是,在搅拌轴4上,搅拌叶轮与矿浆剪切盘11交替设置,搅拌轴4的端部设有搅拌叶轮,向上依次交替设有矿浆剪切盘11和搅拌叶轮。It should be noted that on the stirring shaft 4, the stirring impeller and the pulp shearing disc 11 are alternately arranged, the end of the stirring shaft 4 is provided with a stirring impeller, and the pulp shearing disc 11 and the stirring impeller are alternately arranged upwards.
搅拌桶体1内通过搅拌隔板10和矿浆剪切盘11分割为多个调浆室,也就是说相邻调浆室之间由搅拌隔板10和矿浆剪切盘11隔开。The inside of the mixing barrel 1 is divided into a plurality of pulping chambers by the mixing
为了有效减小药剂液滴直径,促进药剂分散,位于搅拌桶体1内最下端的调浆室内的搅拌叶轮为直叶式叶轮7,其他调浆室内为斜叶式叶轮8。调节装置采用小空间高剪切的设计使药剂在进入搅拌桶体1的第一时间,药剂液滴尽可能小,药剂尽可能分散,然后通过接下来的较低紊流,较大空间的搅拌均匀有效混合药剂与矿浆,提高药剂作用效果。In order to effectively reduce the droplet diameter of the medicine and promote the dispersion of the medicine, the stirring impeller in the mixing chamber at the lowermost end of the mixing barrel 1 is a straight-
本实施例中,搅拌桶体1内的三段调浆室自下而上分别为第一调浆室、第二调浆室和第三调浆室,第一调浆室内设有直叶式叶轮7,用以充形成充分初步紊流,第二调浆室和第三调浆室内均为斜叶式叶轮8,用以配合矿浆剪切盘11形成调浆室内循环,且高能的直叶式叶轮7能够有效减小药剂液滴直径,促进药剂分散,与矿浆充分混合。In this embodiment, the three-stage mixing chambers in the mixing barrel 1 are the first mixing chamber, the second mixing chamber and the third mixing chamber respectively from bottom to top, and the first mixing chamber is provided with a straight blade type mixing chamber. The
搅拌桶体1内还设有搅拌挡板9,搅拌挡板9与搅拌桶体1的内壁同一倾斜度,搅拌挡板9设有4条,沿搅拌桶体1的内壁轴向均匀布设,搅拌挡板9位于搅拌隔板10之间。There is also a stirring baffle 9 in the stirring barrel 1. The stirring baffle 9 has the same inclination as the inner wall of the stirring barrel 1. There are four stirring baffles 9, which are evenly arranged along the inner wall of the stirring barrel 1. The baffles 9 are located between the stirring baffles 10 .
本实施例中,搅拌挡板9设于第二调浆室和第三调浆室内,搅拌挡板9配合斜叶式叶轮8增强对矿浆的搅拌效果。In this embodiment, the stirring baffles 9 are arranged in the second pulp mixing chamber and the third pulp mixing chamber, and the stirring baffles 9 cooperate with the inclined-
为了使搅拌桶体1内的矿浆形成循环,搅拌桶体1内还开设有上循环口12和下循环口13。上循环口12设于最上端调浆室的侧壁上,且不低于同调浆室内搅拌叶轮的安装高度,下循环口13设于最下端调浆室的侧壁上,且位于同调浆室内搅拌叶轮的下方。In order to make the ore slurry in the mixing barrel 1 circulate, the mixing barrel 1 is also provided with an
需要说明的是,本实施中,上循环口12不低于筒调浆室内搅拌叶轮的高度是指上循环口12的圆心不低于搅拌叶轮的水平对称面。It should be noted that, in this implementation, the
本实施例中,上循环口12设于第三调浆室的侧壁上,不低于第三调浆室内斜叶式叶轮8,下循环口13设于第一调浆室的侧壁上,位于第一调浆室内直叶式叶轮7的下方。In this embodiment, the
值得注意的是,搅拌桶体1的内腔分为两部分,上部区域为无搅拌区,下部区域为搅拌区即多段调浆室,也就是说,本实施例中,第三调浆室的上方为无搅拌区。It is worth noting that the inner cavity of the mixing barrel 1 is divided into two parts, the upper area is the non-stirring area, and the lower area is the mixing area, that is, the multi-stage mixing chamber. That is to say, in this embodiment, the third mixing chamber is Above is the no-stirring zone.
上循环口12设于多段调浆室内且位于多段调浆室的上端,既避免了将上循环口12设于无搅拌区内导致的停机时矿浆可能倒灌至循环口堵塞药剂通路,引起严重故障的问题,又避免了将上循环口12设于最上端搅拌叶轮的下方(本实施例中第三调浆室内的斜叶式叶轮8)导致的矿浆部分短路,循环不完全的问题。The
下循环口13的中心轴线与搅拌桶体1的侧壁成30°~45°夹角,直对入料口5,形成对冲流增大矿浆紊流度。The central axis of the
循环射流组件包括循环泵16、循环管17和射流吸药喉管18,上循环口12、循环管17、循环泵16、射流吸药喉管18和下循环口13依次连接形成射流循环通路。The circulating jet assembly includes a circulating
射流吸药喉管18上还设有药剂桶15,射流吸药喉管18为文丘里管,文丘里管的入口端通过循环泵16、循环管17连通上循环口12,文丘里管的扩散端下循环口13连通。The jet
本实施例中,采用循环射流吸药,药剂由负压吸入矿浆,随着水流进入搅拌桶体1时压力骤降有效分散乳化,直叶式叶轮7强制搅拌提高药剂分散程度,提高颗粒药剂接触概率,减少药剂用量。In this embodiment, the circulating jet is used to suck the medicine, and the medicine is sucked into the pulp by negative pressure. When the water flow enters the stirring barrel 1, the pressure drops suddenly, and the pressure drops to effectively disperse and emulsify. Probability to reduce the dosage of the drug.
为了提高矿浆的搅拌效果,循环射流组件设有2个,对称分布于搅拌桶体1的两侧,可理解地,上循环口12和下循环口13对称设有两组。In order to improve the stirring effect of the pulp, there are two circulating jet components, which are symmetrically distributed on both sides of the stirring barrel 1. Understandably, there are two sets of
本实施例中,矿浆自入料口5进入,经过第一调浆室的直叶式叶轮7强力搅拌分散,再由斜叶式叶轮8运输由矿浆剪切盘11与搅拌隔板10之间的间隙进入下一调浆室,到第三调浆室时一部分矿浆由上溢流口6流出成为搅拌产品,一部分矿浆自上循环口12吸入进入循环射流段,药剂自药剂桶15由射流吸药喉管18负压吸入,在下循环口13喷射入搅拌桶体1内,与入料口5形成对冲流加强药剂分散。In this embodiment, the pulp enters from the feeding
本实施例的调浆装置,利用倒锥台形搅拌桶体1充分提高转速分散药剂,促进矿物颗粒与药剂的均匀接触的同时,尽可能保护搅拌轴4,减小搅拌轴4扭矩减少故障发生率。倒锥台形桶体和上大下小的叶轮设计可以保证药剂在进入桶体时,在直叶式叶轮和循环射流的双重作用下在较小的腔体空间内充分分散,有效乳化,后在较大斜叶式叶轮的作用下带动整体矿浆流动,促使药剂矿浆接触均匀,并且符合扭矩分步,保护搅拌轴4,减少故障发生率。The slurry mixing device of this embodiment uses the inverted conical frustum-shaped stirring barrel 1 to fully increase the rotational speed to disperse the chemical, promote the uniform contact between the mineral particles and the chemical, and at the same time protect the stirring shaft 4 as much as possible, reduce the torque of the stirring shaft 4 and reduce the failure rate. . The design of the inverted cone-shaped barrel and the upper large and the lower impeller can ensure that when the agent enters the barrel, it is fully dispersed in a small cavity space under the dual action of the straight-blade impeller and the circulating jet, and is effectively emulsified. The larger inclined-blade impeller drives the overall slurry flow, promotes uniform contact of the chemical slurry, and conforms to the torque step-by-step, protects the stirring shaft 4 and reduces the failure rate.
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Substitutions should be covered within the protection scope of the present invention.
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CN119425445A (en) * | 2025-01-09 | 2025-02-14 | 吉林市兴泰化工有限责任公司 | A pulping device and pulping process for acrylonitrile catalyst production |
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CN119425445A (en) * | 2025-01-09 | 2025-02-14 | 吉林市兴泰化工有限责任公司 | A pulping device and pulping process for acrylonitrile catalyst production |
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