Screening device for ore production

Abstract

The screening device for ore production comprises a screening box, a feeding hopper is arranged at the top of the screening box, a cylindrical screening cavity is longitudinally formed in the screening box, a discharging opening is formed in the bottom of the screening cavity, and a rectangular notch which communicates with the discharging opening and is used for containing a material collecting box is formed in the bottom of the screening box; a screening mechanism is arranged in the screening box, a cleaning mechanism is arranged on the screening mechanism, and a smashing mechanism is further arranged on the top of the screening mechanism. The screening mechanism comprises a screening plate transversely arranged in the screening cavity, a rotating shaft driven by a motor is arranged in the middle of the screening plate, and protrusions in the shape of a regular rectangular pyramid are evenly arranged at the top of the screening plate. According to the ore powder screening device, ore powder can be smashed so as to be fully screened, and meanwhile the situation that normal work of the screening plate is affected due to the fact that the screening plate is blocked by the powder can be effectively prevented.

Description

Technical Field

[0001] The invention relates to the field of screening equipment, in particular to a screening device for ore production. Background Art

[0002] Ore refers to a mineral aggregate from which useful components can be extracted or which has certain properties that can be utilized. Take coal mines as an example. Coal mines are a type of combustible organic rock. They are formed by natural coalification of plants buried underground in ancient times over a long geological period. Coal mines are very important energy sources. They are economical in price and rich in reserves. They are mainly used in my country's energy industry. Ores of different sizes often have different functions. Therefore, in ore processing, ores of different sizes need to be screened.

[0003] For example, the ore screening device with patent number CN220126834U, when the device is screening, when the screen plate is tilted and lifted in the box to screen the material, there is a gap between its two ends and the inner wall of the box or the side wall of the chute, causing a large amount of material to flow into the above gap. While affecting the screening, when the screen plate is reset, it is not easy to reset and return to its original state due to the influence of the above material, thereby affecting its normal use. At the same time, it is affected by the size of the material and the influence of the material blocking the aperture of the screen plate, and it cannot effectively and fully screen the material. Summary of the invention

[0004] The purpose of the present invention is to provide a screening device for ore production.

[0005] The technical problem of the present invention is mainly solved by the following technical solutions:

[0006] A screening device for ore production, comprising a screening box, wherein a feed hopper is arranged on the top of the screening box:

[0007] A cylindrical screening cavity is longitudinally arranged in the screening box, wherein a material drop opening is arranged at the bottom of the screening cavity, a rectangular notch is arranged at the bottom of the screening box, which is connected with the material drop opening and is used to place the aggregate box, and a screening mechanism is arranged in the screening box, wherein a cleaning mechanism is arranged on the screening mechanism, and a crushing mechanism is also arranged on the top of the screening mechanism;

[0008] The screening mechanism comprises a screen plate arranged transversely in the screening chamber, wherein a rotating shaft driven by a motor is arranged in the middle of the screen plate, and protrusions in the shape of regular quadrangular pyramids are evenly arranged on the top of the screen plate;

[0009] The cleaning mechanism comprises a strip seat I and a strip seat II arranged in the middle of the upper and lower end surfaces of the sieve plate, wherein a dust removal chamber is arranged in the strip seat I, wherein air suction holes communicating with the dust removal chamber are evenly arranged on the side walls of the strip seat I, and a purge chamber is arranged in the strip seat II, wherein air outlet pipes communicating with the purge chamber are arranged obliquely upward on the two side walls of the strip seat II, and the dust removal chamber and the purge chamber are connected by a hose, wherein an exhaust fan is arranged on the hose;

[0010] The crushing mechanism includes grille plates arranged on both sides of the top of the strip seat I, wherein a group of inverted eight-shaped structures are formed between the two groups of grille plates, one end of the grille plate is provided with an arc plate tightly attached to the inner side wall of the screening chamber, the outlet end of the feed hopper is connected to the screening chamber between the two groups of arc plates, and strip grooves are provided on the top walls of the screening chamber on both sides of the connection between the feed hopper and the screening chamber, wherein an extrusion seat driven by a hydraulic rod is provided in the strip groove.

[0011] Preferably, fixed plates are provided at both ends of the bottom of the sieve plate on both sides of the strip seat II along its length direction, wherein a slide groove is provided on one side wall of the fixed plate along its length direction, and slide rails are provided on the upper and lower side walls in the slide groove along its length direction, and a baffle plate located between the two groups of fixed plates is provided at the bottom of the sieve plate, wherein the baffle plate is fixed with a pulley group located in the corresponding slide groove through a connecting shaft, and the groove of the pulley group is buckled on the corresponding two groups of slide rails, and bristles that are against the bottom end surface of the sieve plate are also provided on the top surface of the baffle plate, and air holes are evenly provided on the side walls of the baffle plate.

[0012] Preferably, the strip seat I has an isosceles trapezoidal structure, wherein a convex strip with a right-angled triangle cross-section is provided at the top of the strip seat I along its length direction, and the convex strip is located between two groups of grille plates, and the grille plates are composed of several groups of strip plates with isosceles triangle cross-sections.

[0013] Preferably, V-shaped plates are provided on both sides of the top of the sieve plate, wherein the grille plate is located between the two groups of V-shaped plates, and one end of the V-shaped plate is fixedly connected to the inner wall of the corresponding arc plate, and the two ends of the V-shaped plate are respectively arranged parallel to the corresponding grille plate and sieve plate.

[0014] Preferably, limit strips are provided on both side walls of the screening chamber above the sieve plate, and slag discharge ports are provided on both side walls of the screening chamber below the sieve plate, and switch doors are provided on the slag discharge ports.

[0015] Preferably, a box body for installing an exhaust fan is arranged in the screening cavity below the screen plate, wherein a support rod for fixing the box body is longitudinally arranged in the screening cavity.

[0016] The beneficial effects of the present invention are as follows: the present invention drives the screening mechanism and the crushing mechanism to swing back and forth to crush and screen the materials, thereby improving the screening and crushing efficiency of the materials; at the same time, the dust is extracted by the cleaning mechanism, and the dust-containing cleaning is recycled and reused to clean the bottom end surface of the screening mechanism, so that the screening mechanism can be used normally and can also be cleaned; when the screening mechanism rotates in the cylindrical screening chamber, the problem of material falling through its edge will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the present invention in another state;

[0019] Figure 3 It is a schematic diagram of the structure between the fixed plate and the baffle in the present invention.

[0020] In the figure: 1, screening box, 2, feed hopper, 3, screening chamber, 4, drop port, 5, rectangular notch, 6, aggregate box, 7, screening mechanism, 71, sieve plate, 72, rotating shaft, 73, protrusion, 8, cleaning mechanism, 81, strip seat I, 82, strip seat II, 83, dust removal chamber, 84, suction hole, 85, purge chamber, 86, air outlet pipe, 87, hose, 88, exhaust fan, 9, crushing mechanism, 91, grille plate, 92, arc plate, 93, strip groove, 94, extrusion seat, 95, hydraulic rod, 10, fixed plate, 11, slide groove, 12, slide rail, 13, baffle, 14, pulley block, 15, brush, 16, convex strip, 17, V-shaped plate, 18, limit strip, 19, slag discharge port, 20, switch door, 21, box body, 22, support rod. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0022] A screening device for ore production comprises a screening box 1, wherein a feed hopper 2 is arranged on the top of the screening box 1:

[0023] A cylindrical screening cavity 3 is longitudinally arranged in the screening box 1, wherein a material drop opening 4 is arranged at the bottom of the screening cavity 3, and a rectangular notch 5 is arranged at the bottom of the screening box 1, which is connected with the material drop opening 4 and is used to place a collection box 6, and a screening mechanism 7 is arranged in the screening box 1, wherein a cleaning mechanism 8 is arranged on the screening mechanism 7, and a crushing mechanism 9 is also arranged on the top of the screening mechanism 7;

[0024] The screening mechanism 7 comprises a screen plate 71 disposed transversely in the screening chamber 3, wherein a rotating shaft 72 driven by a motor is disposed in the middle of the screen plate 71, and protrusions 73 in the form of regular quadrangular pyramids are evenly disposed on the top of the screen plate 71;

[0025] The cleaning mechanism 8 comprises a strip seat I81 and a strip seat II82 arranged in the middle of the upper and lower end surfaces of the sieve plate 71, wherein the strip seat I81 is provided with a dust removal chamber 83, wherein the side wall of the strip seat I81 is evenly provided with air suction holes 84 connected with the dust removal chamber 83, and the strip seat II82 is provided with a purge chamber 85, wherein the two side walls of the strip seat II82 are obliquely provided with air outlet pipes 86 connected with the purge chamber 85, and the dust removal chamber 83 is connected with the purge chamber 85 through a hose 87, wherein the hose 87 is provided with an exhaust fan 88;

[0026] The crushing mechanism 9 includes grille plates 91 arranged on both sides of the top of the strip seat I81, wherein two groups of grille plates 91 form a group of inverted eight-shaped structures, one end of the grille plate 91 is provided with an arc plate 92 that is tightly attached to the inner wall of the screening chamber 3, the outlet end of the feed hopper 2 is connected to the screening chamber 3 between the two groups of arc plates 92, and strip grooves 93 are provided on the top walls of the screening chamber 3 on both sides of the connection between the feed hopper 2 and the screening chamber 3, wherein an extrusion seat 94 driven by a hydraulic rod 95 is provided in the strip groove 93.

[0027] Both ends of the bottom of the sieve plate 71 on both sides of the strip seat II82 are provided with fixed plates 10 along the length direction thereof, wherein a slide groove 11 is provided on one side wall of the fixed plate 10 along the length direction thereof, and slide rails 12 are provided on the upper and lower side walls in the slide groove 11 along the length direction thereof, and a baffle plate 13 located between the two groups of fixed plates 10 is provided at the bottom of the sieve plate 71, wherein the baffle plate 13 is fixed with a pulley block 14 located in the corresponding slide groove 11 through a connecting shaft, and the groove of the pulley block 14 is buckled on the corresponding two groups of slide rails 12, and bristles 15 that are against the bottom end surface of the sieve plate 71 are also provided on the top end surface of the baffle plate 13, wherein air holes are evenly provided on the side walls of the baffle plate 13.

[0028] like Figure 1 , 2 As shown, the strip seat I81 is an isosceles trapezoidal structure, wherein a convex strip 16 with a right-angled triangle cross section is provided at the top of the strip seat I81 along its length direction, and the convex strip 16 is located between two groups of grille plates 91, and the grille plates 91 are composed of several groups of strip plates with isosceles triangle cross sections.

[0029] like Figure 1 , 2As shown, V-shaped plates 17 are provided on both sides of the top of the sieve plate 71, wherein the grid plate 91 is located between the two groups of V-shaped plates 17, and one end of the V-shaped plate 17 is fixedly connected to the inner wall of the corresponding arc plate 92, and the two ends of the V-shaped plate 17 are respectively arranged parallel to the corresponding grid plate 91 and the sieve plate 71.

[0030] like Figure 1 , 2 As shown, limit bars 18 are provided on both side walls of the screening chamber 3 above the screen plate 71. When the rotating shaft 72 drives the screen plate 71 to rotate, the limit bars 18 limit the inclination angle of the screen plate 71 to achieve the purpose of limiting its swing amplitude. Slag discharge ports 19 are provided on both side walls of the screening chamber 3 below the screen plate 71, and a switch door 20 is provided on the slag discharge ports 19.

[0031] In this embodiment, a box body 21 for installing an exhaust fan 88 is arranged in the screening chamber below the sieve plate 71, wherein a support rod 22 for fixing the box body 21 is longitudinally arranged in the screening chamber 3. The exhaust fan 88 is protected by the box body 21.

[0032] The method of use of the present invention: Figure 1 As shown, by introducing the material into the feed hopper 2, at this time, the two sets of arc plates 92 are located in the screening chamber 3 on both sides of the feed hopper 2, then the material in the feed hopper 2 is introduced into the screening chamber 3 between the two sets of grid plates 91, wherein the small volume of material falls into the screening chamber 3 through the aperture of the grid plate 91 and falls onto the screen plate 71, and then the motor drives the rotating shaft 72 to drive the screen plate 71 to rotate clockwise and counterclockwise, as shown in FIG. Figure 2 As shown, the rotating screen plate 71 drives the grid plate 91 and the arc plate 92 to move through the strip seat I81, so that the arc plate 92 seals the feed hopper 2 to prevent it from continuing to add material into the screening chamber 3, so as to achieve the purpose of controlling the amount of material added;

[0033] When the grid plate 91 is driven by an external force to swing, the small volume of material between the two groups of grid plates 91 will fall through the aperture under the influence of the swinging force, and when the opening between the two groups of arc plates 92 is opposite to the strip groove 93, the hydraulic rod 95 drives the extrusion seat 94 to slide out of the strip groove 93 and pass through the two groups of arc plates 92, and then the material between the two groups of grid plates 91 is squeezed and crushed, so that the sharp part on one side of the grid plate 91 can crush the compressed material, so that the crushed material is sieved and falls on the screen plate 71, and then the extrusion seat 94 is reset, and the rotating screen plate 71 drives the grid plate 91 to drive the material inside it to swing back and forth, so that the squeezed and crushed material is in a loose state after being thrown away, so as to facilitate the next squeezing and crushing, and finally the material is sieved and falls on the screen plates 71 on both sides of the strip seat I81;

[0034] When the crushed material is screened by the grid plate 91, it will be guided by the V-shaped plate 17 to flow to the middle of the top of the screen plate 71, and the screen plate 71 swinging clockwise and counterclockwise can make the top material slide along its top inclined surface at this time, so as to screen the material through the screen plate 71, and the material will violently collide with the sharp surface of the convex seat 73 during the process of flowing over the screen plate 71, so as to further crush and scatter it, thereby facilitating the screen plate 71 to screen it, and finally the screen plate 71 tilts, and the large volume of material is taken out through the opened slag discharge port 19, and the screened material falls into the collecting box 6 through the drop port 4 for collection;

[0035] In the above process, when the screening mechanism 7 and the crushing mechanism 9 swing back and forth to crush and screen the materials, a large amount of fine mineral materials will be diffused in the screening chamber 3 above the screen plate 71 under the influence of the swing force. At this time, the exhaust fan 88 extracts and collects the dust above the screen plate 71 through the hose 87, the dust removal chamber 83 and the suction hole 84, and at the same time, the air flow containing dust is introduced into the purge chamber 85 and sprayed obliquely toward the bottom end surfaces of both ends of the screen plate 71 through a plurality of air outlet pipes 86, so as to play a blowing and cleaning role on the bottom end surface of the reciprocating screen plate 71 to prevent materials from adhering to its bottom end surface and affecting its subsequent screening and cleaning. Figure 2 As shown, when the sieve plate 71 is swinging, it will drive the fixed plate 10 to tilt. At this time, under the influence of gravity and the blowing of air from the air outlet pipe 86, the baffle plate 13 drives the pulley group 14 to slide downward on the slide rail 12 in the slide groove 11 through the connecting shaft, and the bristles 15 on the baffle plate 13 and the bottom end surface of the sieve plate 71 play a scraping and cleaning role to prevent materials from adhering to the bottom end surface of the sieve plate 71 and affecting its work.

[0036] The present invention is described in detail above, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A screening device for ore production, comprising a screening box, wherein a feed hopper is provided on the top of the screening box, characterized in that: A cylindrical screening cavity is longitudinally arranged in the screening box, wherein a material drop opening is arranged at the bottom of the screening cavity, a rectangular notch is arranged at the bottom of the screening box, which is connected with the material drop opening and is used to place the aggregate box, and a screening mechanism is arranged in the screening box, wherein a cleaning mechanism is arranged on the screening mechanism, and a crushing mechanism is also arranged on the top of the screening mechanism; The screening mechanism comprises a screen plate arranged transversely in the screening chamber, wherein a rotating shaft driven by a motor is arranged in the middle of the screen plate, and protrusions in the shape of regular quadrangular pyramids are evenly arranged on the top of the screen plate; The cleaning mechanism comprises a strip seat I and a strip seat II arranged in the middle of the upper and lower end surfaces of the sieve plate, wherein a dust removal chamber is arranged in the strip seat I, wherein air suction holes communicating with the dust removal chamber are evenly arranged on the side walls of the strip seat I, and a purge chamber is arranged in the strip seat II, wherein air outlet pipes communicating with the purge chamber are arranged obliquely upward on the two side walls of the strip seat II, and the dust removal chamber and the purge chamber are connected by a hose, wherein an exhaust fan is arranged on the hose; The crushing mechanism includes grille plates arranged on both sides of the top of the strip seat I, wherein a group of inverted eight-shaped structures are formed between the two groups of grille plates, one end of the grille plate is provided with an arc plate tightly attached to the inner side wall of the screening chamber, the outlet end of the feed hopper is connected to the screening chamber between the two groups of arc plates, and strip grooves are provided on the top walls of the screening chamber on both sides of the connection between the feed hopper and the screening chamber, wherein an extrusion seat driven by a hydraulic rod is provided in the strip groove.

2. A screening device for ore production according to claim 1, characterized in that: Fixed plates are provided at both ends of the bottom of the sieve plate on both sides of the strip seat II along its length direction, wherein a slide groove is provided on one side wall of the fixed plate along its length direction, and slide rails are provided on the upper and lower side walls in the slide groove along its length direction, and a baffle plate located between the two groups of fixed plates is provided at the bottom of the sieve plate, wherein the baffle plate is fixed with a pulley group located in the corresponding slide groove through a connecting shaft, and the groove of the pulley group is buckled on the corresponding two groups of slide rails, and bristles are also provided on the top end surface of the baffle plate that abut against the bottom end surface of the sieve plate, and air holes are evenly provided on the side walls of the baffle plate.

3. A screening device for ore production according to claim 1, characterized in that: The strip seat I is an isosceles trapezoidal structure, wherein a convex strip with a right-angled triangle cross section is arranged at the top of the strip seat I along its length direction, and the convex strip is located between two groups of grid plates, and the grid plates are composed of several groups of strip plates with isosceles triangle cross sections.

4. A screening device for ore production according to claim 1, characterized in that: V-shaped plates are arranged on both sides of the top of the sieve plate, wherein the grid plate is located between the two groups of V-shaped plates, and one end of the V-shaped plate is fixedly connected to the inner wall of the corresponding arc plate, and the two ends of the V-shaped plate are respectively arranged parallel to the corresponding grid plate and the sieve plate.

5. A screening device for ore production according to claim 1, characterized in that: Limiting strips are arranged on both side walls of the screening chamber above the sieve plate, and slag discharge ports are arranged on both side walls of the screening chamber below the sieve plate, and a switch door is arranged on the slag discharge ports.

6. A screening device for ore production according to claim 1, characterized in that: A box body for installing an exhaust fan is arranged in the screening cavity below the screen plate, wherein a support rod for fixing the box body is longitudinally arranged in the screening cavity.

Images