CN115780018A - Pre-grinding crushing device - Google Patents

Abstract

The invention discloses a pre-grinding and crushing device, which comprises a frame, a driving roller, a driven roller, a pressure regulating component, a feeding screening component, a driving component, a material inlet, a first outlet, and a second outlet. The device drives the driving roller to rotate through the drive assembly, and the driven roller follows the rotation of the driving roller. The material enters the wedge-shaped gap between the two rollers and is crushed and then discharged through the first outlet. The materials discharged from the discharge port and newly added materials enter the feed port through the elevator, and the materials that meet the standards are discharged through the second discharge port through the feed screening assembly, and the materials that do not meet the standards continue to circulate for extrusion and crushing. The main purpose of the present invention is to provide a pre-grinding and crushing device, which squeezes and crushes materials into small particles before using tube mill equipment, so as to improve efficiency and reduce energy consumption.

Description

A pre-grinding and crushing device

technical field

The invention relates to the technical field of material crushing, in particular to a pre-grinding and crushing device.

Background technique

Grinding and crushing of materials consume a lot of energy. For example, about 60% of the electricity consumption per ton of cement produced in a cement plant is used for grinding. In order to reduce the power consumption of grinding equipment, crushing first and then grinding, multi The method of breaking and less grinding is used to improve efficiency. For this reason, equipment such as vertical mills and roller presses used before tube mills have appeared one after another. In order to improve the efficiency of material grinding, the inventors have studied a pre-grinding equipment, which is used to squeeze and break materials into small particles before tube mills and other equipment, so as to save energy consumption.

Contents of the invention

In order to overcome the technical problems in the background technology, the present invention provides a pre-grinding and crushing device to solve the above problems.

In order to solve the above technical problems, the present invention provides the following technical solutions: a pre-grinding and crushing device, including a frame, a driving roller, a driven roller, a pressure adjustment assembly, a feeding screening assembly, a driving assembly, a feeding port, a second A discharge port, a second discharge port and a hoist, the driving roller and the driven roller are installed inside the frame, the driving roller is installed in the lower part of the frame and is connected with the driving assembly connected to the output end of the frame, the driven roller is installed on the upper part of the frame and cooperates with the driving roller, sliding tracks are provided on both sides of the frame, and the two ends of the driven roller are slidably installed on the sliding In the track, the pressure adjustment assembly is arranged on the top of the frame, and the pressure adjustment assembly adjusts the pressure by squeezing the driven roller; the material enters from the feed inlet and passes through the feed screening assembly It is sent between the driving roller and the driven roller for extrusion and crushing, and the crushed material is discharged through the first discharge port, and the material discharged from the first discharge port passes through the elevator Returning to the feed inlet, the materials that meet the standards pass through the feed screening assembly and are discharged through the second outlet, and the materials that do not meet the standards continue to circulate for extrusion and crushing.

Preferably, the pressure adjustment assembly is hydraulically driven, and the pressure adjustment assembly includes a hydraulic pump, a hydraulic pipeline, a pressurized pipeline, a counterweight, a hydraulic cylinder, a pressure beam and a guide slider, and the hydraulic pump passes through The hydraulic pipeline is connected to the input end of the pressurized pipeline, and the output end of the pressurized pipeline is connected to the hydraulic cylinder, the hydraulic cylinder is installed on the counterweight, and the drive of the hydraulic cylinder The two ends of the pressure beam are respectively connected with the guide sliders, and the guide sliders can be in contact with the driven rollers.

Preferably, the number of the hydraulic cylinders is two, and the two hydraulic cylinders are arranged symmetrically on both sides of the pressure beam.

Preferably, a hinged support is also included, and both sides of the pressure beam are respectively connected to the slider through the hinged support.

Preferably, the driving assembly includes a driving motor and a coupling, and the output end of the driving motor is connected to the driving roller through the coupling.

Preferably, a casing is also included, the casing is arranged outside the driving roller and the driven roller, the casing is located inside the frame, and the casing is sealed.

Preferably, a wear-resistant liner is provided inside the housing.

Preferably, both the driving roller and the driven roller are installed in the sliding track of the frame through rolling bearings and bearing seats, and the driven roller can slide along the sliding track.

Preferably, the extrusion roller surface of the driving roller is concave, the extrusion roller surface of the driven roller is convex, the extrusion roller surface of the driven roller is provided with patterns, the driving roller and the The return generatrices of the extrusion roller surface of the driven roller are not parallel.

Compared with prior art, the beneficial effect that the present invention can reach is:

1. Using the self-weight of the driven roller and the pressure exerted by the pressure adjustment component as the crushing force, the pressure is stable and the energy consumption is reduced;

2. The extrusion roller surface of the driving roller and the driven roller is a concave-convex symmetrical structure, which can be automatically centered to avoid axial force;

3. The returning busbars of the driving roller and the driven roller are not parallel, which causes the linear speed of the busbars on both sides to be different, and the shearing force that tears the material will be generated in the process, and the crushing effect of the material is better;

4. Through the limit component, the minimum gap between the two rollers can be guaranteed to ensure the safe and reliable operation of the equipment;

5. By setting the casing outside the driving roller and the driven roller, dust can be avoided during the material crushing process.

Description of drawings

Fig. 1 is the front view of the pre-grinding and crushing device in the embodiment of the present invention;

Fig. 2 is a side view of the pre-grinding and crushing device in the embodiment of the present invention;

Fig. 3 is the structure schematic diagram of driven roller of the present invention;

Fig. 4 is a schematic diagram of the structure of the driving roller of the present invention.

Detailed ways

The technical solutions in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings in this embodiment. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in this embodiment are only used to explain the relative relationship between the various components in a certain posture (as shown in the figure). When the positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, "fixation" can be a fixed connection, a detachable connection, or an integral body; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In addition, the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered as a combination of technical solutions. Does not exist, nor is it within the scope of protection required by the present invention. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figures 1-4, a specific embodiment of the present invention discloses a pre-grinding and crushing device, which includes a frame 1, a driving roller 8, a driven roller 7, a housing 2, a pressure adjustment assembly, and a feed screen Subassembly 14, drive assembly 10, feed inlet 13, first discharge outlet, second discharge outlet and hoist. The driving roller 8 and the driven roller 7 are sequentially installed inside the frame 1 from bottom to top, the driving roller 8 is connected to the output end of the driving assembly 10, and the driving roller 8 drives the driven roller 7 to rotate through material extrusion. A pressure regulating assembly is arranged on the top of the frame 1, and the pressure regulating assembly can adjust the pressure by squeezing the driven roller 7. The material to be crushed enters the device through the feed port 13, and enters between the driving roller 8 and the driven roller 7 through the feeding screening assembly 14 for crushing and crushing. The feeding screening assembly 14 is set obliquely and the lowest end corresponds to the driving roller 8 and driven roller 7, the feed screening assembly 14 screens the passing materials, the materials that meet the standards enter the second discharge port through the feed screening assembly 14, and the materials that do not meet the standards enter Squeeze and crush between the driving roller 8 and the driven roller 7, and then discharge through the first discharge port, and the material discharged from the first discharge port returns to the feed port 13 through the elevator together with the newly added material. Through the pre-grinding and crushing device of the present invention, the material is squeezed and crushed into small particles before using the tube mill equipment, so as to improve efficiency and reduce energy consumption.

Further, the two sides of the frame 1 are provided with sliding rails 9, the driving roller 8 and the driven roller 7 are installed in the frame 1 through the rolling bearing 17 and the bearing seat 16, and the driven roller 7 can slide along the Track 9 slides. The pressure adjustment component adopts hydraulic drive mode, and the pressure adjustment component includes a hydraulic pump, a hydraulic pipeline 5, a pressurized pipeline 12, a counterweight 11, a hydraulic cylinder 4, a pressure beam 3, a hinged support 6 and a guide slider, and the hydraulic pump The hydraulic pipeline 5 is connected to the input end of the pressurized pipeline 12, and the output end of the pressurized pipeline 12 is connected to the hydraulic cylinder 4. There are two hydraulic cylinders 4 and they are symmetrically installed on the counterweight 11. The two hydraulic cylinders 4 The driving end of the cylinder 4 is far away from the counterweight 11 and is connected with the pressure beam 3. The two ends of the pressure beam 3 are respectively connected with a guide slider through the hinge support 6, and the two guide sliders are slidably installed on the corresponding sides of the frame 1 In the sliding track 9 , the guide slider can abut against the bearing seat 16 of the driven roller 7 .

Further, a sealed casing 2 is installed between the two rollers and the frame 1, and the sealed casing 2 completely seals the driving roller 8 and the driven roller 7, so as to prevent the materials from raising dust during the crushing process. A wear-resistant liner is installed inside the housing 2, and the wear-resistant liner generally uses a wear-resistant steel plate.

Further, the driving device includes a driving motor and a coupling, and the output end of the driving motor is connected to the driving roller 8 through the coupling. The driving motor drives the driving roller 8 to rotate through the coupling. There is material between the two rollers. With the rotation of the driving roller 8, the material enters and exits the wedge-shaped roll gap between the two rollers and is crushed and then discharged through the first outlet.

Further, the extrusion roller surface of the driving roller 8 is a concave surface, and the extrusion roller surface of the driven roller 7 is a convex surface. When the two rollers cooperate with each other, the axes are parallel and the gaps are the same, which reduces the production generated when extruding the material. Axial force and movement problems. The returning generatrices of the extrusion roller surfaces of the driving roller 8 and the driven roller 7 are not parallel, resulting in different linear speeds of the busbars on both sides, and a shear force that tears the materials will be generated during the process, and the crushing effect of the materials is better.

Further, the extrusion roller surface of the driven roller 7 is provided with patterns, and the driving roller 8 relies on the pattern on the extrusion roller surface of the driven roller 7 and the extrusion force between the materials to drive the driven roller 7 to rotate. Driven by the drive, the driven roller 7 cooperates with the driving roller 8 to squeeze and crush the material.

Further, one end of the driven roller 7 close to the driving roller 8 is provided with a limiting assembly 15, the limiting assembly 15 is arranged at the lower part of the bearing seat 16 of the driven roller 7, and the limiting assembly 15 is used to maintain the driven roller 7 and the The minimum clearance of the driving roller 8 is specified to ensure the safe and reliable operation of the equipment.

Further, the feed screening component 14 is selected from a pressure-resistant reaction plate, which is arranged obliquely to the horizontal line, and the reaction plate is provided with screening holes that meet the standards for materials to pass through.

When the present invention is in use, the pressure regulating assembly is adjusted to an appropriate pressure, and the bearing housing 16 of the driven roller 7 is squeezed through the guide slider, and the pressure exerted by the driven roller 7 and the pressure regulating assembly is used as the extrusion and crushing of the pulverized material. force. The material to be crushed enters the device through the feed port 13, and slides to the driving roller 8 and driven roller 7 through the inclined reaction plate for extrusion and grinding. The material that meets the standard directly enters the second discharge port through the reaction plate and is discharged. Go to the next level of crushing or grinding equipment through the L1 route; the unqualified materials are discharged through the first discharge port, and are transported to the elevator through the L2 route, and the materials discharged from the first discharge port pass through the elevator together with the newly added materials The machine returns to the feed inlet 13, continues to sieve and pulverizes through two rollers, until the end.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. A kind of pre-grinding crushing device, it is characterized in that: comprise frame (1), driving roller (8), driven roller (7), pressure regulating assembly, feed screening assembly (14), driving assembly ( 10), feed port (13), first discharge port, second discharge port and hoist, described driving roller (8) and described driven roller (7) are all installed on described frame (1 ), the driving roller (8) is mounted on the lower part of the frame (1) and connected to the output end of the drive assembly (10), and the driven roller (7) is mounted on the frame (1 ) and cooperate with the driving roller (8), the two sides of the frame (1) are provided with sliding tracks (9), and the two ends of the driven roller (7) are slidably installed on the sliding track (9) ), the pressure adjustment assembly is arranged on the top of the frame (1), and the pressure adjustment assembly performs pressure adjustment by squeezing the driven roller (7); the material enters from the feed port (13) , sent between the driving roller (8) and the driven roller (7) through the feed screening assembly (14) for extrusion and crushing, after extrusion and crushing, the material passes through the first discharge The material discharged from the first discharge port returns to the feed port (13) through the elevator, and the material that meets the standard passes through the feed screening assembly (14) and passes through the second discharge port. The material is discharged from the material port, and the materials that do not meet the standards continue to circulate for extrusion and crushing. 2. A pre-grinding and crushing device according to claim 1, characterized in that: the pressure adjustment assembly adopts a hydraulic drive method, and the pressure adjustment assembly includes a hydraulic pump, a hydraulic pipeline (5), a pressurized pipe Road (12), counterweight (11), hydraulic cylinder (4), pressure beam (3) and guide slider, the hydraulic pump passes through the hydraulic pipeline (5) and the pressurized pipeline (12 ) is connected to the input end, the output end of the pressurized pipeline (12) is connected to the hydraulic cylinder (4), the hydraulic cylinder (4) is installed on the counterweight (11), and the hydraulic cylinder ( 4) The driving end is away from the counterweight (11) and connected to the pressure beam (3), the two ends of the pressure beam (3) are respectively connected with the guide slider, and the guide slider can abut against the driven roller (7). 3. A pre-grinding and crushing device according to claim 2, characterized in that: the number of the hydraulic cylinders (4) is two, and the two hydraulic cylinders (4) are symmetrically arranged on the Both sides of the beam (3). 4. A pre-grinding and crushing device according to claim 2, characterized in that: it also includes a hinged support (6), and the two sides of the pressure beam (3) pass through the hinged support (6) and the The sliders are connected. 5. A kind of pre-grinding crushing device according to claim 1, characterized in that: the drive assembly (10) comprises a drive motor and a shaft coupling, and the output end of the drive motor is connected to the shaft coupling through the shaft coupling The driving roller (8) is connected to each other. 6. A kind of pre-grinding and crushing device according to claim 1, characterized in that: it also includes a casing (2), and the casing (2) is arranged on the driving roller (8) and the driven roller Outside the roller (7), the housing (2) is located inside the frame (1), and the housing (2) is sealed. 7. A pre-grinding and crushing device according to claim 6, characterized in that: the housing (2) is provided with a wear-resistant liner inside. 8. A pre-grinding and crushing device according to claim 1, characterized in that: the driving roller (8) and the driven roller (7) pass through rolling bearings (17) and bearing housings (16) Installed in the sliding track (9) of the frame (1), the driven roller (7) can slide along the sliding track (9). 9. A kind of pre-grinding and crushing device according to claim 1, characterized in that: the extrusion roller surface of the driving roller (8) is a concave surface, and the extrusion roller surface of the driven roller (7) is Convex, the extrusion roller surface of the driven roller (7) is provided with patterns, and the regression generatrices of the extrusion roller surfaces of the driving roller (8) and the driven roller (7) are not parallel. 10. A pre-grinding and crushing device according to claim 1, characterized in that: the end of the driven roller (7) close to the driving roller (8) is provided with a limit assembly (15), the limit The positioning assembly (15) is arranged at the lower part of the bearing seat (16) of the driven roller (7), and the limiting assembly (15) is used to maintain the driven roller (7) and the driving roller (8) minimum gap.

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