High-pressure roller mill

Abstract

The utility model provides a high-pressure roller mill which comprises a milling box and a driving mechanism, a feeding hole is formed in the top of the milling box, a powder collecting hopper is arranged at the bottom of the milling box, two groups of milling rollers are arranged in the milling box, and the driving mechanism is in transmission connection with the milling rollers; a telescopic mechanism is arranged at the top of the grinding box, a mounting hole is formed in the top surface of the grinding box, the telescopic end of the telescopic mechanism extends into the grinding box from the mounting hole, the telescopic end of the telescopic mechanism is connected with a cleaning mechanism, the cleaning mechanism corresponds to the grinding roller in position, the telescopic end of the telescopic mechanism contracts, the cleaning mechanism is located above the grinding roller, and the telescopic end of the telescopic mechanism extends. The cleaning mechanism contacts with the grinding roller. The high-pressure roller mill is simple in structure and reasonable in design, the grinding rollers are convenient to clean, and materials are prevented from being adhered to the grinding rollers.

Description

Technical Field

[0001] The utility model relates to a crushing device, in particular to a high pressure roller mill. Background Art

[0002] High-pressure grinding rollers (HPGRs) are common crushing equipment with numerous advantages, including excellent crushing and grinding performance, low energy consumption, and a small footprint. They are widely used in a wide range of applications, including ores, metals, and cement. Currently, a wide variety of roller grinding equipment is available on the market, including publication number CN118416991A, which discloses a mechanically synchronized HPGR; publication number CN118417000A, which discloses a HPGR capable of recycling crushed materials; and publication number CN221334448U, which discloses a HPGR for iron ore concentrate production. However, during the crushing process, material can easily adhere to the surface of the grinding rollers, hindering smooth crushing.

[0003] In order to solve the above problems, people have been seeking an ideal technical solution. Utility Model Content

[0004] The purpose of the utility model is to provide a high pressure roller grinding mill in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A high-pressure roller mill comprises a grinding box and a driving mechanism, wherein a feeding port is provided on the top of the grinding box, a powder collecting hopper is provided on the bottom of the grinding box, two sets of grinding rollers are provided inside the grinding box, and the driving mechanism is transmission-connected to the grinding rollers; a telescopic mechanism is provided on the top of the grinding box, a mounting hole is provided on the top surface of the grinding box, a telescopic end of the telescopic mechanism extends into the grinding box from the mounting hole, a cleaning mechanism is connected to the telescopic end of the telescopic mechanism, the cleaning mechanism corresponds to the position of the grinding roller, the telescopic end of the telescopic mechanism contracts, the cleaning mechanism is located above the grinding roller, the telescopic end of the telescopic mechanism extends, and the cleaning mechanism contacts the grinding roller.

[0007] The powder collecting hopper is a trough-shaped structure with an open top surface. The grinding roller is located above the powder collecting hopper. A sieve plate is provided between the grinding roller and the powder collecting hopper. The area of the sieve plate is less than or equal to the open top surface area of the trough-shaped structure.

[0008] A pull-out opening is provided on the side of the grinding box, upper lap plates are provided on both sides of the trough structure, and lower lap plates are provided correspondingly inside the grinding box. The upper lap plates and the lower lap plates are slidably matched, and an outer sealing plate is provided on the outer end face of the trough structure. The outer contour of the outer sealing plate is larger than the pull-out opening, and a pull-out handle is provided on the outside of the outer sealing plate.

[0009] The sieve plate and the upper lap plate are correspondingly provided with connection holes, and the sieve plate and the upper lap plate are fixedly connected by bolts and nuts.

[0010] The cleaning mechanism includes a mounting plate and a cleaning brush arranged on the mounting plate. The mounting plate and the projection of the grinding roller on the bottom surface of the grinding box do not overlap. The cleaning brush and the projection of the grinding roller on the bottom surface of the grinding box partially overlap. The top of the mounting plate is connected to the telescopic end of the telescopic mechanism. Two vertical guide rods are connected to the inner side of the top surface of the grinding box. A guide hole is opened on the mounting plate, and the vertical guide rod passes through the guide hole.

[0011] The upper side of the feeding port is connected to the expanding cylinder, and the upper end edge of the expanding cylinder is provided with a horizontal ring plate.

[0012] Compared to existing technologies, the present invention offers the following advantages: a simple and rationally designed high-pressure roller mill, convenient cleaning of the rollers, and prevention of material sticking to the rollers after being squeezed. During operation, material enters the mill chamber from the feed port, and the drive mechanism rotates the rollers to grind the material. The ground powder is filtered through a sieve plate and falls into a powder collection hopper. The cleaning mechanism is adjusted in position by a telescopic mechanism, allowing the brushes to contact the rollers, cleaning any material stuck to them. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0015] Figure 3 It is a structural schematic diagram of the powder collecting hopper in the utility model.

[0016] Figure: 1. Grinding box; 2. Drive mechanism; 3. Feed port; 4. Grinding roller; 5. Screen plate; 6. Powder hopper; 7. External sealing plate; 8. Pull-out handle; 9. Expanding cylinder; 10. Horizontal ring plate; 11. Cleaning mechanism. DETAILED DESCRIPTION

[0017] The technical solution of the present utility model is further described in detail below through specific implementation methods.

[0018] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. "Installed", "provided with", "connected", etc. can adopt conventional means in the prior art, such as: integral setting, snap-on installation, welding connection, adhesive connection, bolt connection, etc. For ordinary technicians in this field, they can understand the specific meanings of the above terms in this utility model according to specific circumstances and select appropriate connection, setting or installation methods in the prior art.

[0019] like Figure 1-3 As shown, a high-pressure roller mill includes a grinding box 1 and a drive mechanism 2. A feed port 3 is provided at the top of the grinding box 1, a powder collecting hopper 6 is provided at the bottom of the grinding box 1, two sets of grinding rollers 4 are provided inside the grinding box 1, and the drive mechanism 2 is connected to the grinding rollers 4 in a transmission manner. A telescopic mechanism is provided at the top of the grinding box 1. A mounting hole is provided on the top surface of the grinding box 1. The telescopic end of the telescopic mechanism extends into the grinding box 1 through the mounting hole. The telescopic end of the telescopic mechanism is connected to a cleaning mechanism 11. The cleaning mechanism 11 corresponds to the position of the grinding rollers 4. When the telescopic end of the telescopic mechanism is retracted, the cleaning mechanism 11 is located above the grinding rollers 4. When the telescopic end of the telescopic mechanism is extended, the cleaning mechanism 11 contacts the grinding rollers 4. Specifically, the telescopic mechanism can adopt a common electric telescopic rod or a hydraulic telescopic rod. To facilitate feeding, the feed port is projected on the bottom of the grinding box between the two sets of grinding rollers. The grinding rollers adopt a common grinding roller structure. The drive mechanism mainly includes a conventional drive motor, a reducer, a coupling, etc., to facilitate the transmission connection between the grinding rollers and the motor.

[0020] This high-pressure roller mill has a simple structure and rational design, making it easy to clean the rollers and preventing material from sticking to them after being squeezed. It is suitable for small-scale manufacturers to crush raw materials. During operation, material enters the grinding chamber through the feed port, and the drive mechanism drives the rollers to rotate, grinding the material. The ground powder is filtered through the sieve plate and falls into the powder collection hopper. The cleaning mechanism is adjusted by the telescopic mechanism, so that the brush bristles contact the rollers, cleaning the material stuck to the rollers.

[0021] In one embodiment, the powder collecting hopper 6 is a trough-shaped structure with an open top surface, the grinding roller 4 is located above the powder collecting hopper 6, and a sieve plate 5 is provided between the grinding roller 4 and the powder collecting hopper 6; the area of the sieve plate 5 is less than or equal to the open top surface area of the trough-shaped structure.

[0022] In one embodiment, a pull-out opening is provided on the side of the grinding box 1. Upper lap plates are provided on both sides of the trough structure, and corresponding lower lap plates are provided inside the grinding box 1. The upper and lower lap plates slide together. To improve the smoothness of sliding, rollers can be installed on the upper or lower lap plates to reduce friction. The outer end surface of the trough structure is provided with an outer sealing plate 7. The outer contour of the outer sealing plate 7 is larger than the pull-out opening, and a pull-out handle 8 is provided on the outer side of the outer sealing plate 7. After a period of use, the powder hopper can be removed and the ground material can be poured out.

[0023] In one embodiment, the sieve plate 5 and the upper lap plate are provided with connection holes, and the sieve plate 5 and the upper lap plate are fixedly connected by bolts and nuts, which is convenient for disassembly. In addition, the sieve plate can be a flat plate or a concave arc plate.

[0024] In one embodiment, the cleaning mechanism 11 includes a mounting plate and a cleaning brush arranged on the mounting plate. The mounting plate and the projection of the grinding roller 4 on the bottom surface of the grinding box 1 do not overlap, and the cleaning brush partially overlaps with the projection of the grinding roller 4 on the bottom surface of the grinding box 1. The top of the mounting plate is connected to the telescopic end of the telescopic mechanism. Two vertical guide rods are connected to the inner side of the top surface of the grinding box 1. A guide hole is opened on the mounting plate, and the vertical guide rod passes through the guide hole to improve the stability of the cleaning mechanism.

[0025] In one embodiment, the upper side of the feeding port 3 is connected to the expanding tube 9, and the upper edge of the expanding tube 9 is provided with a horizontal ring plate 10 to facilitate the addition of raw materials.

[0026] The above embodiments can be combined with each other.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and not to limit it; although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solution of the utility model, they should all be included in the scope of the technical solution for protection of the utility model.

Claims

1. A high pressure roller grinding mill, characterized in that: The grinding machine comprises a grinding box and a driving mechanism, a feeding port is provided on the top of the grinding box, a powder collecting hopper is provided on the bottom of the grinding box, two groups of grinding rollers are provided inside the grinding box, and the driving mechanism is connected to the grinding rollers in a transmission manner; a telescopic mechanism is provided on the top of the grinding box, a mounting hole is provided on the top surface of the grinding box, the telescopic end of the telescopic mechanism extends into the interior of the grinding box from the mounting hole, the telescopic end of the telescopic mechanism is connected to a cleaning mechanism, the cleaning mechanism corresponds to the position of the grinding roller, the telescopic end of the telescopic mechanism contracts, the cleaning mechanism is located above the grinding roller, the telescopic end of the telescopic mechanism extends, and the cleaning mechanism contacts the grinding roller; the cleaning mechanism comprises a mounting plate and a cleaning brush provided on the mounting plate, the mounting plate and the projection of the grinding roller on the bottom surface of the grinding box do not overlap, the cleaning brush partially overlaps with the projection of the grinding roller on the bottom surface of the grinding box, the top of the mounting plate is connected to the telescopic end of the telescopic mechanism, two vertical guide rods are connected to the inner side of the top surface of the grinding box, a guide hole is provided on the mounting plate, and the vertical guide rods pass through the guide holes.

2. The high pressure grinding roller according to claim 1, characterized in that: The powder collecting hopper is a trough-shaped structure with an open top surface. The grinding roller is located above the powder collecting hopper. A sieve plate is provided between the grinding roller and the powder collecting hopper. The area of the sieve plate is less than or equal to the open top surface area of the trough-shaped structure.

3. The high pressure grinding roller according to claim 2, characterized in that: A pull-out opening is provided on the side of the grinding box, upper lap plates are provided on both sides of the trough structure, and lower lap plates are provided correspondingly inside the grinding box. The upper lap plates and the lower lap plates are slidably matched, and an outer sealing plate is provided on the outer end face of the trough structure. The outer contour of the outer sealing plate is larger than the pull-out opening, and a pull-out handle is provided on the outside of the outer sealing plate.

4. The high pressure grinding roller according to claim 3, characterized in that: The sieve plate and the upper lap plate are correspondingly provided with connection holes, and the sieve plate and the upper lap plate are fixedly connected by bolts and nuts.

5. The high pressure grinding roller according to claim 4, characterized in that: The upper side of the feeding port is connected to the expanding cylinder, and the upper end edge of the expanding cylinder is provided with a horizontal ring plate.

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