Mud scraping device for double-roller machine

Abstract

The mud scraping device comprises a shell, a feeding opening is formed in the top of the shell, two sets of crushing rollers are arranged in the shell, the two ends of each crushing roller are rotationally connected with sliding bases, sliding grooves are formed in the front side and the rear side of the shell in a penetrating mode, the sliding bases correspond to the sliding grooves in a one-to-one mode, and the sliding bases correspond to the sliding grooves in a one-to-one mode. The sliding seats are connected to the sliding grooves in a sliding mode, and a distance adjusting assembly is arranged between the two sets of sliding seats on the same side. And the opposite sides of the two sets of crushing rollers abut against scraper assemblies, the two ends of each scraper assembly are connected with connecting assemblies in an inserted mode, and elastic pulling assemblies are arranged at the upper ends of the connecting assemblies. The crusher has the advantages that the scraper assembly is convenient to replace, the scraper assembly elastically abuts against the crushing roller and can still be tightly attached to the crushing roller after being abraded, and the extrusion force between the scraper assembly and the crushing roller can be adjusted.

Description

Technical Field

[0001] The utility model relates to the field of double-roller machines, in particular to a mud scraping device for double-roller machines. Background Art

[0002] A roller crusher, also known as a roller crusher, is a common type of ore crushing equipment widely used in industries such as mining, metallurgy, building materials, and chemicals. It crushes materials through the extrusion and friction between two counter-rotating rollers. During operation, material enters the roller crusher through the feed port and is clamped and squeezed by the two rotating rollers. Due to the friction and extrusion between the rollers, the material is broken into smaller particles and discharged through the discharge port.

[0003] When the material being crushed is sticky, some of it will adhere to the crushing rollers, affecting their ability to squeeze and crush the material. Furthermore, small particles of crushed material will adhere to the sticky material, affecting proper discharge. Conventional double-roller crushers generally lack scrapers to remove sticky material from the crushing rollers. Instead, they use bolts to secure the scrapers to the crushing rollers. However, friction from the crushing rollers can prevent the scrapers from fitting tightly together, making it difficult to reliably scrape the sticky material off the rollers. This necessitates replacing the scrapers or adjusting their mounting position, a cumbersome operation that could be improved. Summary of the Invention

[0004] In order to solve the problems existing in the background technology, the utility model proposes a mud scraping device for a roller mill.

[0005] A mud scraping device for a roller machine comprises a shell, a feeding port is provided on the top of the shell, two groups of crushing rollers are provided inside the shell, both ends of the crushing rollers are rotatably connected to slides, slide grooves are opened through the front and back sides of the shell, the slides correspond to the slides one-to-one, the slides are slidably connected to the slides, and a spacing adjustment component is provided between the two groups of slides on the same side; scraper components are abutted on opposite sides of the two groups of crushing rollers, connecting components are plugged into both ends of the scraper components, and an elastic pulling component is provided on the upper end of the connecting component.

[0006] Based on the above, the top and bottom of the slide are provided with slots, and both ends of the crushing roller are provided with sealing rings, which are sleeved on the outside of the slide and fit on the inner wall of the shell.

[0007] Based on the above, the spacing adjustment assembly includes a lower rack plate and an upper rack plate arranged between the two groups of slides on the same side, and the lower rack plate and the upper rack plate are respectively fixedly installed on the opposite sides of the two groups of slides on the same side. A gear is engaged between the lower rack plate and the upper rack plate, and the gear is rotatably connected to the outer shell. A connecting plate is fixedly installed on the side of one of the slides away from the lower rack plate, and a hydraulic cylinder is provided on the other side of the connecting plate.

[0008] Based on the above, the scraper assembly includes a scraper body and a mounting seat. The upper half of the mounting seat cross section is U-shaped, and the lower half of the mounting seat cross section is circular. The scraper body is fixed in the upper half of the mounting seat by bolts, and square grooves are provided at both ends of the mounting seat.

[0009] Based on the above, the connecting assembly includes a T-shaped plate fixedly mounted on the bottom of the sliding seat, the T-shaped plate is in an inverted T shape, a sleeve is fixed through the surface of the T-shaped plate, a hollow rotating shaft is rotatably connected in the sleeve, an annular flange is fixedly mounted on the circumferential surface of the hollow rotating shaft, an annular groove is provided on the inner wall of the sleeve corresponding to the annular flange, an insertion strip is slidably connected through the center of the hollow rotating shaft, one end of the insertion strip is inserted in the square groove, and the other end of the insertion strip is fixedly mounted on the hand-held handle, a deflection arm is sleeved and rotatably provided on the outside of the sleeve, a mounting hole is provided on the end of the hand-held handle away from the insertion strip, a fixing bolt is inserted in the mounting hole, a threaded hole is provided on the surface of the deflection arm, the fixing bolt is threadedly connected in the threaded hole, through slots are provided on the front and back sides of the shell, and the insertion strip passes through the through slots.

[0010] Based on the above, the elastic pulling assembly includes a lug fixedly mounted on the surface of the T-shaped plate, a pull rod is slidably connected to the top of the lug, a thread is provided on the surface of the pull rod, a nut is threadedly connected to one end of the pull rod, a connecting plate is fixedly mounted on the other end of the pull rod, a spring is sleeved on the outside of the pull rod, gaskets are fixedly mounted at both ends of the spring, two sets of gaskets are respectively abutted against the opposite sides of the lug and the nut, a linear groove is penetrated on the surface of the connecting plate, a sliding column is fixedly mounted on the top of the deflection arm, and the sliding column is slidably connected in the linear groove.

[0011] The present invention has substantial features and progress compared with the prior art. Specifically, the present invention facilitates the replacement of the scraper assembly by detachably connecting the scraper assembly and the connecting assembly. The deflection arm is pulled to deflect through the elasticity of the nut, so that the scraper assembly remains in contact with the surface of the crushing roller. Moreover, when the scraper body is worn, it can still remain in contact with the surface of the crushing roller. Moreover, by screwing the nut, the compression distance of the spring is adjusted, and the extrusion force of the scraper body on the crushing roller is adjusted. The scraper assembly is convenient to replace, the scraper assembly elastically abuts against the crushing roller, and can still be tightly attached to the crushing roller after wear, and the extrusion force between the scraper assembly and the crushing roller can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0013] Figure 2 It is a schematic diagram of the three-dimensional cutaway structure of the present utility model.

[0014] Figure 3 It is a three-dimensional structural diagram of the spacing adjustment component of the utility model.

[0015] Figure 4 It is a three-dimensional structural diagram of the practical connection component.

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the practical elastic pulling component.

[0017] Explanation of Reference Numerals: 100, housing; 200, feeding port; 300, crushing roller; 400, slide; 500, chute; 600, spacing adjustment assembly; 700, scraper assembly; 800, connecting assembly; 900, elastic pulling assembly; 301, sealing ring; 401, slot; 601, connecting plate; 602, hydraulic cylinder; 603, lower rack plate; 604, upper rack plate; 605, gear; 701. Scraper body; 702. Mounting seat; 703. Square groove; 801. T-shaped plate; 802. Sleeve; 803. Hollow shaft; 804. Annular flange; 805. Insert; 806. Handle; 807. Deflection arm; 808. Fixing bolt; 809. Through groove; 901. Lug; 902. Pull rod; 903. Spring; 904. Nut; 905. Connecting piece; 906. Sliding column. DETAILED DESCRIPTION

[0018] 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 embodiments described 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.

[0019] like Figure 1-Figure 5As shown, a scraping device for a roller machine includes a housing 100. A feeding port 200 is provided at the top of the housing 100 for adding materials to be crushed into the housing 100. Two sets of crushing rollers 300 are provided inside the housing 100, and the two sets of crushing rollers 300 are located directly below the feeding port 200. The bottom of the housing 100 is open for discharging the crushed materials. Both ends of the crushing rollers 300 are rotatably connected to a slide 400, and a connecting shaft is fixed to the end of the crushing roller 300, which passes through and is rotatably connected to the slide 400. The two crushing rollers 300 are connected to a driving source through the connecting shaft, and the two sets of crushing rollers 300 rotate in opposite directions through the driving source. The driving source is not shown in the figure. The driving source is a motor, a reducer and a coupling, which is the existing technology. Slide slots 500 are provided through both the front and rear sides of the housing 100. Slide seats 400 correspond to the slide slots 500 one-to-one and are slidably connected to the slide slots 500. A spacing adjustment assembly 600 is provided between the two sets of slide seats 400 on the same side. The spacing adjustment assembly 600 adjusts the spacing between the two sets of slide seats 400 on the same side, thereby adjusting the spacing between the two sets of crushing rollers 300 and adjusting the particle size of the crushed material. Scraper assemblies 700 abut opposite sides of the two sets of crushing rollers 300. Connecting assemblies 800 are plugged into each end of the scraper assemblies 700. The scraper assemblies 700 and the connecting assembly 800 are detachably connected by plugging and unplugging, making the scraper assemblies 700 easily replaceable. An elastic pulling assembly 900 is provided at the upper end of the connecting assembly 800. The elasticity of the elastic pulling assembly 900 allows the scraper assembly 700 to elastically abut against the surface of the crushing roller 300. After the scraper assembly 700 is worn, it can still remain in close contact with the surface of the crushing roller 300.

[0020] During use, the slide 400 is provided with slots 401 at both its top and bottom. The width of the slots 401 is equal to the thickness of the side panels of the housing 100, allowing the side of the housing 100 to fit within the slots 401 of the slide 400. Half of the slide 400 is located inside the housing 100, while the other half is located outside. This prevents the slide 400 from separating from the housing 100. Sealing rings 301 are provided at both ends of the crushing roller 300. These seals are fitted around the outside of the slide 400, with a thickness slightly less than half that of the slide 400. The sealing rings 301 adhere to the inner wall of the housing 100. Since the slide 400 is halfway inside the housing 100, positioned between the end of the crushing roller 300 and the sidewall of the housing 100, the crushing roller 300, when fitted around the outside of the slide 400, seals the gap between the end of the crushing roller 300 and the sidewall of the housing 100.

[0021] Specifically, the spacing adjustment assembly 600 includes a lower rack plate 603 and an upper rack plate 604 disposed between two sets of slides 400 on the same side. The lower rack plate 603 and the upper rack plate 604 are fixedly mounted on opposite sides of the two sets of slides 400 on the same side. A gear 605 meshes between the lower rack plate 603 and the upper rack plate 604, and the gear 605 is rotatably connected to the housing 100. A connecting plate 601 is fixedly mounted on the side of one slide 400 away from the lower rack plate 603. A hydraulic cylinder 602 is disposed on the other side of the connecting plate 601. The output end of the hydraulic cylinder 602 extends and retracts, cooperating with the connection of the connecting plate 601, driving one of the slides 400 to move. The transmission function of the lower rack plate 603, the upper rack plate 604, and the gear 605 then drives the other slide 400 to move. The two sets of slides 400 on the same side can move toward or away from each other simultaneously. After the distance between the two sets of crushing rollers 300 is adjusted, the materials dropped from the feeding port 200 can fall between the two sets of crushing rollers 300.

[0022] The scraper assembly 700 includes a scraper body 701 and a mounting base 702. The upper half of the mounting base 702 has a U-shaped cross-section, while the lower half is circular. The scraper body 701 is fixed to the upper half of the mounting base 702 by bolts. Through holes are provided on the side of the upper half of the mounting base 702 and the bottom side of the scraper body 701 for the insertion of the bolts. After the scraper body 701 is inserted into the upper half of the mounting base 702, bolts are inserted into the through holes to secure the scraper body 701 and the mounting base 702 together. Square slots 703 are provided at each end of the mounting base 702. Connecting assembly 800 includes a T-shaped plate 801 fixedly mounted on the bottom of slide 400. T-shaped plate 801 is in an inverted T shape, with a sleeve 802 fixedly extending through its surface. A hollow shaft 803 is rotatably connected within sleeve 802. Hollow shaft 803 is provided with an annular flange 804 on its circumference, and an annular groove is formed on the inner wall of sleeve 802 corresponding to flange 804. This ensures that hollow shaft 803 is stably connected to sleeve 802 for rotation, preventing the two from becoming detached. A plug 805 is slidably connected through the center of hollow shaft 803. One end of plug 805 is inserted into square groove 703, and a handle 806 is fixedly mounted on the other end of plug 805. When replacing the scraper assembly 700, the handle 806 is used to pull the insert 805 outward, allowing the insert 805 to be removed from the square slot 703, thereby removing the scraper assembly 700 from the bottom of the housing 100. Similarly, when installing the scraper assembly 700, the scraper assembly 700 is lifted upward from the bottom of the housing 100 and the insert 805 is inserted into the square slot 703 to complete the replacement of the scraper assembly 700. A deflection arm 807 is mounted on the outer side of the sleeve 802 and rotates. The end of the handle 806 away from the insert 805 has a mounting hole, into which a fixing bolt 808 is inserted. The deflection arm 807 has a threaded hole, into which the fixing bolt 808 is threaded. The handle 806 and deflection arm 807 are fixed together. When the deflection arm 807 rotates around the circumference of the sleeve 802, the handle 806 and the insert 805 rotate synchronously, thereby deflecting the scraper assembly 700. Through slots 809 are formed on both the front and rear sides of the housing 100, through which the insert 805 passes. The horizontal portion of the T-shaped plate 801 covers the opening of the through slot 809, acting as a seal. When the slide 400 slides along the slide 500 to adjust the spacing between the crushing rollers 300, the T-shaped plate 801 moves synchronously with the slide 400, and the insert 805 moves horizontally within the through slot 809. In addition, the spacing between the top and bottom walls of the through slot 809 can meet the rotation requirements of the insert 805.

[0023] In practice, the elastic pulling assembly 900 includes a lug 901 fixedly mounted on the surface of the T-shaped plate 801. A pull rod 902 is slidably connected to the top of the lug 901. The pull rod 902 is threaded and sleeved with a spring 903. Washers are fixedly mounted on both ends of the spring 903. A nut 904 is threadedly connected to one end of the pull rod 902. Two sets of washers abut opposite sides of the lug 901 and the nut 904, respectively. A connecting piece 905 is fixedly mounted on the other end of the pull rod 902. A linear groove is formed through the surface of the connecting piece 905. A sliding post 906 is fixedly mounted on the top of the deflection arm 807 and slidably connected to the linear groove. The elasticity of the spring 903 causes the nut 904 and the pull rod 902 to move away from the lug 901, causing the pull rod 902 to pull the connecting piece 905, thereby causing the deflection arm 807 and the sliding post 906 to deflect. During the deflection of the deflection arm 807, the slide post 906 will have a certain amount of vertical displacement. The linear groove is provided to compensate for the vertical offset of the slide post 906, ensuring stable deflection of the deflection arm 807. By tightening the nut 904 with a wrench, the pull rod 902 moves upward, adjusting the compression of the nut 904. This adjusts the thrust of the nut 904 on the nut 904 and the pull rod 902, and the tension of the pull rod 902 and the connecting piece 905 on the deflection arm 807, thereby adjusting the extrusion force of the scraper body 701 on the surface of the crushing roller 300.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A scraper device for a roller conveyor, characterized in that: The invention comprises a shell, a feeding port is provided on the top of the shell, two sets of crushing rollers are provided inside the shell, both ends of the crushing rollers are rotatably connected to slides, and slide grooves are provided through the front and back sides of the shell, the slides correspond to the slide grooves one by one, the slides are slidably connected to the slide grooves, and a spacing adjustment component is provided between the two sets of slides on the same side; The two groups of crushing rollers are respectively abutted against a scraper assembly on one side thereof, and both ends of the scraper assembly are plugged with a connecting assembly, and an elastic pulling assembly is provided on the upper end of the connecting assembly.

2. The scraper device for a roller mill according to claim 1, characterized in that: The top and bottom of the slide are both provided with slots, and both ends of the crushing roller are provided with sealing rings, which are sleeved on the outside of the slide and fit on the inner wall of the shell.

3. The scraper device for a roller mill according to claim 1, characterized in that: The spacing adjustment assembly includes a lower rack plate and an upper rack plate arranged between two groups of slides on the same side. The lower rack plate and the upper rack plate are respectively fixedly mounted on opposite sides of the two groups of slides on the same side. A gear is meshed between the lower rack plate and the upper rack plate, and the gear is rotatably connected to the outer shell. A connecting plate is fixedly mounted on the side of one of the slides away from the lower rack plate, and a hydraulic cylinder is provided on the other side of the connecting plate.

4. The scraper device for a roller mill according to claim 1, characterized in that: The scraper assembly includes a scraper body and a mounting seat. The upper half of the mounting seat cross section is U-shaped, and the lower half of the mounting seat cross section is circular. The scraper body is fixed in the upper half of the mounting seat by bolts, and square grooves are provided at both ends of the mounting seat.

5. The scraper device for a roller mill according to claim 1, characterized in that: The connecting assembly includes a T-shaped plate fixedly mounted on the bottom of the sliding seat, the T-shaped plate is in an inverted T shape, a sleeve is fixed through the surface of the T-shaped plate, a hollow rotating shaft is rotatably connected in the sleeve, an annular flange is provided on the circumferential surface of the hollow rotating shaft, an annular groove is provided on the inner wall of the sleeve corresponding to the annular flange, an insertion strip is slidably connected through the center of the hollow rotating shaft, one end of the insertion strip is inserted in the square groove, and the other end of the insertion strip is fixedly mounted on the hand-held handle, a deflection arm is sleeved and rotatably provided on the outer side of the sleeve, a mounting hole is provided on the end of the hand-held handle away from the insertion strip, a fixing bolt is inserted in the mounting hole, a threaded hole is provided on the surface of the deflection arm, and the fixing bolt is threadedly connected in the threaded hole, and through slots are provided through the front and back sides of the shell, and the insertion strip passes through the through slots.

6. The scraper device for a roller mill according to claim 1, characterized in that: The elastic pulling assembly includes a lug fixedly mounted on the surface of the T-shaped plate, a pull rod is slidably connected to the top of the lug, a thread is provided on the surface of the pull rod, a nut is threadedly connected to one end of the pull rod, a connecting piece is fixedly mounted on the other end of the pull rod, a spring is sleeved on the outside of the pull rod, gaskets are fixedly mounted on both ends of the spring, two sets of gaskets are respectively abutted against the opposite sides of the lug and the nut, a linear groove is opened on the surface of the connecting piece, a sliding column is fixedly mounted on the top of the deflection arm, and the sliding column is slidably connected in the linear groove.

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