Non-clogging sand mill with reinforced hydrodynamic effect chip type separation sieve ring structure

Abstract

The utility model discloses a non-clogging sand mill with an enhanced hydrodynamic effect chip-type separating sieve ring structure, which comprises a rack, a grinding cylinder arranged on the rack, a grinding motor and a rotor driven by the grinding motor, the rotor extends into the grinding cylinder from the first end of the grinding cylinder, the first end of the grinding cylinder is provided with a feeding pipe for materials to enter, and the first end of the grinding cylinder is provided with a discharging pipe for discharging the materials. The grinding machine is characterized in that an inner shell is arranged in the grinding cylinder, a discharging channel is formed between an outer shell of the grinding cylinder and the inner shell, a gradually-changing-diameter type spiral cavity around the central axis of the rotor is formed in the inner shell through a sheet type separation sieve ring, the sheet type separation sieve ring is formed by stacking a plurality of ceramic sheets, and the inlet end of the gradually-changing-diameter type spiral cavity is connected with a compressed air discharging opening. And the return pipe is connected with the outlet end and the inlet end of the tapered spiral cavity. According to the utility model, the material treatment efficiency is obviously improved, and the blocking risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sand mill technical field, specifically, it relates to a sand mill of not jammed reinforced fluid dynamics effect piece type separation screen ring structure. BACKGROUND

[0002] The traditional piece type separation screen ring structure sand mill adopts straight cylinder shell, and adopts sheet layer grading filter structure, airflow passes through the sand mill, and the product particle size is controlled by the gap size of the piece type separation screen ring, the particles smaller than the screen ring gap can go out, and the particles larger than the screen ring gap are retained. After a long time of running, especially when processing high viscosity or containing a large number of small particles, the screen ring part is easy to be jammed due to material accumulation, which affects the production efficiency and product quality. The traditional solution often depends on regular shutdown cleaning or screen ring replacement, which not only increases the maintenance cost, but also reduces the continuous operation capacity of the equipment. SUMMARY

[0003] The utility model aims at: in view of the internal jamming problem of sand mill, a reinforced non jamming piece type separation screen ring structure combined with fluid dynamics principle is designed to overcome the defects of the prior art.

[0004] A sand mill of not jammed reinforced fluid dynamics effect piece type separation screen ring structure, including frame, the grinding cylinder setting on the frame, grinding motor and the rotor driven by grinding motor, the rotor from the first end of grinding cylinder extends into the grinding cylinder, the first end of grinding cylinder is equipped with the feed pipe for material to enter, its characterized in that, the inner shell is arranged in the grinding cylinder, and the discharge channel is between the grinding cylinder shell and the inner shell, the inner shell is formed with the gradually changing diameter type spiral cavity around the center axis of the rotor by piece type separation screen ring, the piece type separation screen ring is formed by the superposition of a plurality of ceramic sheets, the gradually changing diameter type spiral cavity is connected with the compressed air discharge port at the inlet end, and the return pipe is connected with the outlet end and the inlet end of the gradually changing diameter type spiral cavity.

[0005] There is a nanoscale gap between adjacent ceramic sheets.

[0006] The inlet diameter of the gradually changing diameter type spiral cavity is wider than the outlet diameter.

[0007] The plurality of ceramic sheets are fastened by bolts

[0008] The utility model has the advantages of:

[0009] The sand mill of the utility model introduces fluid dynamics principle to optimize the screen ring structure, increases the radial pressure of wind force through the spiral cavity, not only significantly improves the material processing efficiency, reduces the risk of blockage, in the advancing process of air (if oxidation needs to be prevented, changes into inert gas such as nitrogen), resistance is generated, part of the gas continues to advance, another part enters the gap position, so the gap position is continuously dredged, and it is ensured that the gap position is not blocked. The sand mill ensures the long-term stable operation of the equipment, reduces the maintenance cost, and improves the overall economic benefit.

[0010] Fluid dynamics effect: the grinding inner cavity of the sand mill of the utility model forms a unique fluid guiding channel. The blade design combines the principle of vortex dynamics to guide the material to form a high-speed rotating vortex around the screen ring. This design not only enhances the uniformity of the mixture of the material, but also effectively separates the large particles and small particles in the material through centrifugal force and vortex force, so that the small particles are more easily passed through the screen, and the residence time of the large particles in the screen ring is reduced, thereby avoiding blockage. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural schematic view of the sand mill of the utility model.

[0012] Figure 2 It is a structural schematic view of the sand mill of the utility model.

[0013] Figure 3 It is a structural schematic view of the sand mill of the utility model.

[0014] Figure 4 It is a structural schematic view of the sand mill of the utility model. DETAILED DESCRIPTION

[0015] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as a limitation of the utility model.

[0016] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model. Unless otherwise specified, the meaning of "multiple" is two or more.

[0017] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through the intermediate medium, can be the communication of two elements inside, for the ordinary skilled in the art, the above-mentioned term can be understood in the specific meaning of the utility model according to specific circumstances.

[0018] Referring to Figures 1-4 The utility model discloses a sand mill of piece type separation screen ring structure of reinforced fluid dynamics effect without blocking, including frame, the grinding cylinder 1 of setting on the frame, grinding motor 2 and the rotor 3 of grinding motor drive, grinding motor 2 passes through the power transmission of belt pulley mechanism 8 to rotor 3, and the rotor penetrates the whole grinding cylinder, and is installed on the central axis of grinding cylinder, and the first end of grinding cylinder is equipped with the feed pipe (not shown in drawing) for the material to enter, and the inner shell 4 is arranged in the grinding cylinder, and the discharge passage 5 between the outer shell of grinding cylinder and inner shell, the inner shell is formed with the gradually changing diameter type spiral cavity around the central axis of rotor by piece type separation screen ring, the piece type separation screen ring is formed by the superposition of several ceramic sheets 41, and there is nanometer gap between adjacent ceramic sheets, and the compressed air discharge port 7 is connected to the inlet end of gradually changing diameter type spiral cavity, and the outlet end and the inlet end of gradually changing diameter type spiral cavity are connected to the return pipe, in the present application, the spacing unit of adjacent ceramic sheets is nanometer, and the gap is defined as nanometer gap.

[0019] As Figure 4 Shown, multiple ceramic sheets 41 of the same thickness are stacked together, and are clamped and fastened by bolt 9, so that nanometer spacing is formed between adjacent ceramic sheets. The inner shell with spiral-shaped inner cavity is composed of several ceramic sheets, and the ceramic sheet structure of the same surface can be formed by splicing two to four ceramic sheet units. The width of the ceramic sheet near the outlet of the spiral-shaped inner cavity is wider than the inlet, so that the gradually changing diameter type spiral cavity is formed.

[0020] When the sand mill is working, under the action of the rotation of the rotor and the wind force of the continuous compressed air, the mixture material advances along the spiral cavity, and the grinding medium grinds the material, when the compressed air flows along the spiral cavity, the wind force forms the component force in the advancing direction and the radial component force, a part of air passes through the nanometer gap between the ceramic sheets at a certain wind speed under the action of the radial component force, at the same time, the material with a diameter / thickness smaller than the gap is discharged with the wind, and enters the discharge passage. The mixture material (including grinding medium, such as grinding beads) discharged from the outlet end of the gradually changing diameter type spiral cavity is returned to the inlet end of the gradually changing diameter type spiral cavity through the circulating pump, so that the next sand mill separation cycle is started.

[0021] The grinding cylinder adopts a spiral structure, and the mixture is driven to flow in the gradually narrowing spiral cavity by the rotation of the rotor, so that the grinding stroke is longer than that of the ordinary straight cylinder, the collision between the grinding medium and the material is accelerated in the material flow process, and the grinding effect is enhanced. The nanoscale material in the spiral cavity is thrown out by centrifugal force, and then discharged outside the grinding cylinder through the interlayer between the outer shell and the inner shell of the grinding cylinder. The air flow pressure formed in the spiral cavity by compressed air solves the problem of the sieve screen being blocked by the grinding beads.

[0022] The above is only a preferred embodiment of the present application, and does not limit the technical scope of the present application in any way. Therefore, other embodiments obtained by using the same or similar technical features as the above-described embodiments of the present application are within the scope of the present application.

Claims

1. A sand mill with a non-clogging, enhanced fluid dynamics effect plate-type separation screen ring structure, comprising a frame, a grinding cylinder mounted on the frame, a grinding motor, and a rotor driven by the grinding motor, wherein the rotor extends into the grinding cylinder from a first end, and the first end of the grinding cylinder is provided with a feed pipe for material entry, characterized in that, The inner shell is arranged in the grinding cylinder, and a discharge passage is arranged between the outer shell of the grinding cylinder and the inner shell.

2. The sand mill of the non-clogging, enhanced hydrodynamic effect, sheet- like separation screen ring structure according to claim 1, characterized in that: There is a nanoscale gap between adjacent ceramic sheets.

3. The sand mill of the non-clogging, enhanced hydrodynamic effect, sheet- like separation screen ring structure according to claim 2, characterized in that: The inlet diameter of the gradually-changing-diameter spiral cavity is wider than the outlet diameter.

4. The sand mill according to claim 1 or 2 or 3, wherein: The plurality of ceramic sheets are fastened by bolts.

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