CN219324449U - Raw material screening device for producing fire-resistant dry material - Google Patents

Abstract

The utility model discloses a raw material screening device for producing refractory dry materials, which comprises a screen box, a bottom frame and a vibrator, wherein the vibrator is arranged on the bottom frame, the screen box is connected with the vibrator, a screen and a discharge plate are distributed in the screen box at intervals from top to bottom, the surface of the screen box is provided with a discharge hole corresponding to the lower ends of the screen and the discharge plate, the outer side of the discharge hole is provided with a track, the track is spirally arranged on the screen box in a surrounding manner, the lower end of the spiral track is provided with a blanking pipe, the surface of the screen is vertically provided with a slow flow part along the material flow direction, the slow flow part is V-shaped, and an included angle towards one side of the discharge hole of the screen box is smaller than the other side. According to the utility model, the screen is arranged in a circular truncated cone shape, and materials falling on the screen can flow from the middle part to the periphery along the surface of the circular truncated cone, and further, through arranging the uniformly distributed slow flow parts on the surface of the screen, the flow speed of the materials to the periphery can be reduced, and the screening time of the materials can be prolonged, so that thorough screening can be ensured.

Description

Raw material screening device for producing fire-resistant dry material

Technical Field

The utility model relates to the technical field of dry material screening, in particular to a raw material screening device for producing a fireproof dry material.

Background

The refractory material is an inorganic nonmetallic material with the refractoriness not lower than 1580 ℃ and is mainly processed by various minerals through various processes, and is mainly used in various environments needing high temperature resistance. Because the refractory materials have wide application and various specifications, a vibrating screen is needed to be used for classifying the refractory material particles and powder into different particle size sections in the production flow.

The circular vibrating screen is a common dry material screening device, and the working principle is that a vibrator drives a screen box to generate circular motion with certain amplitude, materials on the screen surface are subjected to impulse transmitted by the screen box to generate continuous throwing motion, and particles smaller than screen holes are enabled to pass through the screen in the process that the materials meet the screen surface, so that classification is realized.

The problem that prior art exists is that the discharge gate of shale shaker sets up in the screen cloth periphery, and the material needs to flow outward through the screen cloth middle part promptly, and consequently the screen cloth mostly has the screening surface of from inside to outside downward sloping, and when the shale shaker drove the material and throws on the slope screening surface, the material can flow to the screening surface lower extreme simultaneously, and this can lead to material and screening surface to meet the frequency reduction, and then influences screening efficiency.

Disclosure of Invention

The utility model aims to provide a raw material screening device for producing a fire-resistant dry material, which aims to solve the problem that the screening efficiency of the material is affected by the inclination angle of the screening surface of a vibrating screen in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a fire-resistant dry-type material production is with raw materials sieving mechanism, includes sieve case, chassis and vibrator, and wherein the vibrator is installed on the chassis, and the sieve case is connected with the vibrator, sieve incasement is from last to lower interval distribution has screen cloth and flitch, the screen cloth is round platform form, and its middle part downwardly extending has the cylinder, install in the cylinder and knock the vibration part, knock the vibration part and drive the vibration net vibration through the cylinder, the discharge gate has been seted up to the lower extreme that corresponds screen cloth and flitch on the surface of sieve case, the outside of discharge gate is provided with the track, and the track is the spiral and encloses to locate on the sieve case, the unloading pipe is installed to spiral orbital lower extreme, the surface of screen cloth is provided with the slow flow portion perpendicularly along the material flow direction, the slow flow portion is the V type, and is less than the opposite side towards the contained angle of sieve case discharge gate one side.

Preferably, the screen cloth is provided with two sets of, wherein set up in the screen mesh number of upper end and be less than the screen mesh number of lower extreme, be located the upper end the screen cloth bottom is provided with the water conservancy diversion portion, and the water conservancy diversion portion is the equal open-ended inverted round platform column structure in upper and lower both ends, and wherein axis and lower extreme screen cloth axis coincidence to form the material that falls from the upper end screen cloth and pass through the lower port of water conservancy diversion, fall in the structure at lower extreme screen cloth middle part.

Preferably, the screening machine body further comprises a dust cover and a feed inlet arranged on the dust cover, and the dust cover is detachably arranged on the screen box.

Preferably, the screening machine body further comprises vibration damping springs, the vibration damping springs are used for connecting the underframe with the screen box, a plurality of groups of vibration damping springs are arranged, and the vibration damping springs are uniformly distributed between the underframe and the screen box.

Preferably, the cavity is offered to the cylinder is inside, the part that shakes that beats sets up in the cavity, including install in motor, the piece of beating and vibrating plate in the cavity, the piece of beating is connected with the motor is eccentric, and the vibrating plate is installed in the piece of beating top to form and drive the structure of beating the vibrating plate of beating through the motor, make it keep certain frequency to beat.

Preferably, the tracks are provided with three groups, and the baits of the three groups of tracks are distributed in a staggered manner.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the screen is arranged in a circular truncated cone shape, materials falling on the screen can flow from the middle part to the periphery along the surface of the circular truncated cone, and further, the flow speed of the materials to the periphery can be reduced by arranging the uniformly distributed slow flow parts on the surface of the screen, so that the screening efficiency is ensured, and the screen is knocked by arranging the knocking part in the main body, so that the materials are prevented from adhering to the surfaces of the screen and the discharging plate.

Drawings

FIG. 1 is a schematic elevational view of the present utility model;

FIG. 2 is a schematic cross-sectional elevation view of the present utility model;

FIG. 3 is a schematic top view of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;

fig. 5 is an enlarged schematic view of the structure at B in fig. 2 according to the present utility model.

In the figure: 1. a screen box; 2. a chassis; 3. a vibrator; 4. a screen; 5. a discharge plate; 6. a column; 7. a discharge port; 8. a track; 9. discharging pipes; 10. a slow flow part; 11. a flow guiding part; 12. a dust cover; 13. a feed inlet; 14. a damping spring; 15. a motor; 16. a knocking member; 17. and a vibration plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The utility model provides a raw material screening device for producing fire-resistant dry materials, which is shown in figures 1-5, and comprises a screen box 1, a bottom frame 2 and a vibrator 3, wherein the vibrator 3 is arranged on the bottom frame 2, the screen box 1 is connected with the vibrator 3, a screen 4 and a discharge plate 5 are distributed in the screen box 1 at intervals from top to bottom, in the prior art, the vibrator 3 can excite the screen box 1 to generate a motion with a certain amplitude, the materials on the screen 4 are subjected to impulse transmitted by the screen box 1 to generate continuous throwing motion, and meet the screen 4 to realize classification of particles smaller than screen holes.

The screening device further comprises damping springs 14, the damping springs 14 are used for connecting the underframe 2 with the screen box 1, a plurality of groups of damping springs 14 are arranged, and the plurality of groups of damping springs 14 are uniformly distributed between the underframe 2 and the screen box 1 in a ring shape.

Preferably, the vibration damping spring 14 is a rubber vibration isolation spring, and has the advantages of long service life, low noise, stable crossing of a resonance region and the like compared with a metal spring.

The screen 4 is in a round table shape, the middle part of the screen 4 downwards extends to form a column body 6, a knocking part is arranged in the column body 6, the knocking part drives the vibrating screen 4 to vibrate through the column body 6, in some embodiments of the utility model, a cavity is formed in the column body, the knocking part is arranged in the cavity and comprises a motor 15, a knocking part 16 and a vibrating plate 17 which are arranged in the cavity, the knocking part 16 is eccentrically connected with the motor 15, the vibrating plate 17 is arranged above the knocking part 16, and the knocking part 16 is driven to rotate through the motor 15, so that the vibrating plate 17 is kept to have a structure of beating the vibrating plate 17 at a certain frequency.

It will be appreciated that when the dry material is subjected to multi-stage screening, a portion of the material is easily blocked or adhered to the surface of the screen 4 or the discharge plate 5, and the vibration striking member is used for striking the material blocked at the screen holes or adhered to the surface of the discharge plate 5 so as to enable the material to be discharged through the discharge port 7.

The surface of the screen box 1 is provided with a discharge hole 7 corresponding to the lower ends of the screen 4 and the discharge plate 5, the outer side of the discharge hole 7 is provided with a track 8, the track 8 is spirally arranged on the screen box 1 in a surrounding mode, and a blanking pipe 9 is arranged at the lower end of the spiral track 8.

By adopting the structure, the material placed on the screen 4 is thrown on the screen 4 under the combined action of the gravity of the material and the vibrator 3, and moves towards the periphery from the middle part of the screen 4, namely, moves towards the discharge hole 7 formed in the screen box 1, in the screening process, in order to avoid too fast material movement and too low contact frequency with the screen 4, the slow flow part 10 is arranged, the slow flow part 10 is vertically arranged on the surface of the screen 4 along the material flow direction, the slow flow part 10 is in a V shape, the included angle towards one side of the discharge hole 7 of the screen box 1 is smaller than that of the other side, when the material flows through the slow flow part 10, the material is distributed towards two sides along the arrangement of the slow flow part 10, the residence time of the material on the screen 4 can be effectively improved through the arrangement of the plurality of the slow flow parts 10, the screening efficiency is ensured, and the slow flow part 10 needs to be noted to have enough height perpendicular to the surface direction of the screen 4 so as to avoid the material which makes throwing movement on the screen 4, and the slow flow part 10 can easily pass beyond the slow flow part 10, so that the slow flow effect or the slow flow difference cannot be realized.

In some embodiments of the present utility model, the screens 4 are provided in two groups, wherein the number of the screens 4 provided at the upper end is smaller than the number of the screens 4 at the lower end, i.e., the pore size of the screens 4 at the upper end is larger than the pore size of the screens 4 at the lower end.

Referring to fig. 2, when the material screened by the upper end screen 4 falls down vertically, that is, the material falling on the lower end screen 4 is distributed on each position on the surface of the material, during screening, the material on the lower end screen 4 near the discharge port 7 cannot be screened effectively, in order to solve the problem, by arranging the flow guiding part 11 at the bottom of the screen 4 at the upper end, the flow guiding part 11 is of an inverted circular truncated cone structure with both the upper end and the lower end open, wherein the axis coincides with the central axis of the lower end screen 4, so that the material falling from the upper end screen 4 passes through the lower port of the flow guiding part 11 and falls in the middle of the lower end screen.

When the screen 4 is provided with two groups, the rails 8 should be correspondingly provided with three groups, which respectively correspond to the upper screen 4, the lower screen 4 and the discharge plate 5, the discharge plate 5 is arranged below the lower screen 4, and the discharging pipes 9 of the three groups of rails 8 are distributed in a staggered manner, so that materials discharged through the rails 8, screened and having different particle diameters can flow out without being affected by each other, and when the method is implemented, material collecting devices such as a collecting barrel, a collecting box and the like should be arranged below the outlet corresponding to each discharging pipe 9.

The screening device further comprises a dust cover 12 and a feed inlet 13 arranged on the dust cover 12, wherein the dust cover 12 is detachably arranged on the screen box 1.

Working principle: the dry material is added into the screen box 1 through the feed inlet 13, firstly falls on the screen box 4 at the upper end, drives the screen box 1 to vibrate through the vibrator 3, makes the dry material on the screen box 4 perform throwing motion, and realizes material screening, small-particle-size materials fall on the screen box 4 at the lower end through the screen holes on the screen box 4 at the upper end, fall on the discharge plate 5 through screening again, so as to screen the materials with different particle sizes, the screened materials move towards the discharge holes 7, enter the track 8 through the discharge holes 7, the spiral track 8 can enable the materials to move towards the blanking pipe 9, and are discharged through the blanking pipe 9, and the vibration knocking component can be used for vibrating the materials adhered or blocked on the screen box 4 and the discharge plate 5, so that the materials are fully discharged.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a fire-resistant dry-type material production is with raw materials sieving mechanism, includes sieve case, chassis and vibrator, and wherein the vibrator is installed on the chassis, and the sieve case is connected with the vibrator, the sieve incasement is from last to lower interval distribution has screen cloth and flitch, its characterized in that: the screen cloth is round platform form, and its middle part downwardly extending has the cylinder, install in the cylinder and beat the part that shakes, it shakes the net vibration to beat the part and drive through the cylinder, the discharge gate has been seted up to the surface of screen box corresponding to the lower extreme of screen cloth and flitch, the outside of discharge gate is provided with the track, and the track is on the spiral surrounding locates the screen box, and the unloading pipe is installed to spiral orbital lower extreme, the surface of screen cloth is provided with the slow flow portion along the material flow direction is perpendicular, slow flow portion is the V type, and the contained angle towards screen box discharge gate one side is less than the opposite side.

2. The raw material screening device for producing refractory dry materials according to claim 1, wherein: the screen cloth is provided with two sets of, wherein set up in the screen mesh number of upper end and be less than the screen mesh number of lower extreme, be located the upper end the screen cloth bottom is provided with the water conservancy diversion portion, and the water conservancy diversion portion is the equal open-ended round platform column structure in upper and lower both ends, and wherein axis and lower end screen cloth axis coincidence to form the material that falls from the upper end screen cloth and pass through the lower port of water conservancy diversion, fall in the structure at lower end screen cloth middle part.

3. The raw material screening device for producing refractory dry materials according to claim 1, wherein: still include the shield to and set up the feed inlet on the shield, the shield detachably installs on the screen box.

4. A raw material screening apparatus for producing a refractory dry material according to claim 3, wherein: the vibration damping device comprises a chassis, a screen box and vibration damping springs, and is characterized by further comprising the vibration damping springs, wherein the vibration damping springs are used for connecting the chassis with the screen box, a plurality of groups of vibration damping springs are arranged, and the vibration damping springs are uniformly distributed between the chassis and the screen box.

5. The raw material screening device for producing refractory dry materials according to claim 1, wherein: the cylinder is internally provided with a cavity, the knocking part is arranged in the cavity and comprises a motor, a knocking part and a vibrating plate, wherein the motor, the knocking part and the vibrating plate are arranged in the cavity, the knocking part is eccentrically connected with the motor, the vibrating plate is arranged above the knocking part, and the structure that the knocking part is driven to rotate through the motor so that the vibrating plate is hit at a certain frequency is formed.

6. The raw material screening device for producing refractory dry materials according to claim 2, wherein: the tracks are provided with three groups, and blanking pipes of the three groups of tracks are distributed in a staggered mode.

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