Pressing wheel repairing device of biomass granulator

Abstract

The utility model discloses a pinch roller repairing device of a biomass granulator. The pinch roller repairing device comprises a workbench (1), two groups of supporting rollers (2) which are oppositely supported on the workbench and are used for placing pinch rollers (7), a driving device for driving the pinch rollers to rotate, and a grinding wheel system which is arranged beside a pinch roller supporting device and can do reciprocating motion in the transverse direction and the longitudinal direction, a grinding wheel mounting table of the grinding wheel system moves until a rotating grinding wheel is in contact with the straight tooth side surface of the outer edge of the pinch roller to polish the straight tooth side surface of the pinch roller. The pressing wheel can be efficiently repaired at low cost, the repairing time is short, and the material consumption is low. The use effect of the repaired pinch roller is the same as that of a new pinch roller. The pinch roller can be repaired and used for many times, the service life can be greatly prolonged, the production cost is saved, and material waste is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical component repair auxiliary devices, in particular to an auxiliary device for repairing a pressure wheel of a biomass pellet machine for producing biomass pellet fuel. Background Art

[0002] The key components of biomass pellet machines are the ring die and the pressure wheel, which are used to extrude the fragmented biomass raw materials (such as forestry residues) into pellets. The ring die and the pressure wheel must work together, and the shapes and sizes of the two must be well matched, otherwise the biomass pellets produced will not meet the quality standards. The existing ring die is made of alloy steel, such as Figure 1 , Figure 2 As shown, there are many small holes on the ring die A for extruding materials to form biomass pellets. By rotating and extruding the pressure wheel B set in the ring die, the crushed biomass raw materials are squeezed into the small holes on the ring die, and discharged from the small holes to obtain biomass pellets. The aperture of the small hole is determined according to the needs of the user, and the compression length is determined according to the moisture content and characteristics of the material. The pressure wheel is a gear structure with a protruding straight tooth b1 in the middle zone of the outer edge, and the two sides of the straight tooth form a sunken step outer cylindrical surface b2. Due to the frequent extrusion of materials, the ring die A and the pressure wheel B are very easy to wear and deform, resulting in size changes, and qualified biomass pellets can no longer be produced. The damaged parts of the pressure wheel are basically the straight tooth parts. The ring die and the pressure wheel are expensive, but the production enterprises have to prepare more spare parts to meet the production needs, so as to replace them in time to ensure normal production, resulting in high production costs. In addition, the deformed and worn ring die and pressure wheel are actually only used 4% of their weight before being discarded, causing great waste and causing great losses to the enterprise. If it can be repaired, it will greatly reduce the company's raw material consumption and save costs, but no ideal repair method has been found so far, and manufacturers can only discard it. Summary of the invention

[0003] The utility model aims to solve the blank of the prior art and provide a repairing device which can repair the pressing wheel of a biomass pellet machine.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The pressing wheel repairing device of the biomass pellet machine comprises a workbench, two groups of supporting rollers arranged on the workbench for placing the pressing wheel, a driving device for driving the pressing wheel to rotate, and a grinding wheel system arranged beside the pressing wheel supporting device and capable of reciprocating in the horizontal and vertical directions;

[0006] Each set of supporting rollers includes two rollers installed on the roller shaft and arranged at intervals;

[0007] The driving device comprises a driving motor and a pressure wheel transmission rubber wheel mounted on the output shaft of the driving motor, wherein the pressure wheel transmission rubber wheel is tightly fitted with the outer circumferential surface of the sunken step on one side of the pressure wheel; the pressure wheel transmission rubber wheel is driven by the driving motor, thereby driving the pressure wheel to rotate;

[0008] The grinding wheel system includes a grinding wheel mounting platform that can reciprocate in the horizontal and vertical directions, a dual-output shaft motor mounted on the grinding wheel mounting platform, and grinding wheels symmetrically mounted on the front ends of the output shafts at both ends of the dual-output shaft motor, wherein the motor output shaft is parallel to the center axis of the pressure wheel; the grinding wheel mounting platform moves until the rotating grinding wheel contacts the spur tooth side surface of the outer edge of the pressure wheel, thereby grinding the spur tooth side surface of the pressure wheel.

[0009] Furthermore, the grinding wheel mounting table capable of reciprocating in the transverse and longitudinal directions comprises a transverse guide rail installed on the workbench along the axis of the pressure wheel, a longitudinal guide rail installed horizontally on the transverse guide rail and perpendicular to the transverse guide rail, and the dual output shaft motor is installed on the longitudinal guide rail.

[0010] The utility model can repair the pressing wheel efficiently and at low cost, with short working hours and low material consumption. The repaired pressing wheel has high concentricity with the ring die, and the use effect is the same as that of a new pressing wheel. The pressing wheel can be repaired and used many times, which can greatly extend the service life, save production costs, reduce material waste, and create significant economic benefits for the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the ring die and the pressure wheel assembly in the prior art;

[0012] Figure 2 for Figure 1 A top view of

[0013] Figure 3 is a schematic diagram of the main view of the pressure wheel repair device;

[0014] Figure 4 is a top view schematic diagram of a pressure wheel repair device;

[0015] Figure 5 is a left side schematic diagram of the pressure wheel repair device;

[0016] Figure 6 It is a schematic diagram of open tooth cladding. DETAILED DESCRIPTION

[0017] The content of the utility model is further described below in conjunction with the accompanying drawings of the specification.

[0018] Biomass pellet machine pressure wheel repair device, such as Figure 3 , Figure 4 , Figure 5As shown, it comprises a workbench 1, two groups of supporting rollers 2 arranged on the workbench for placing a pressing wheel 7, a driving device for driving the pressing wheel to rotate, and a grinding wheel system arranged beside the pressing wheel supporting device and capable of reciprocating in the horizontal and vertical directions. Each group of supporting rollers 2 comprises two rollers installed on a roller shaft and arranged at intervals.

[0019] The driving device includes a driving motor 3a and a pressure wheel transmission rubber wheel 3b installed on the output shaft of the driving motor. The pressure wheel transmission rubber wheel is tightly fitted with the outer cylindrical surface 7b of the sunken step on one side of the pressure wheel. The driving motor drives the pressure wheel transmission rubber wheel, thereby driving the pressure wheel to rotate.

[0020] The grinding wheel system comprises a grinding wheel mounting platform that can reciprocate in the horizontal and vertical directions, a dual-output shaft motor 5 mounted on the grinding wheel mounting platform, and a grinding wheel 6 symmetrically mounted on the front ends of the output shafts at both ends of the dual-output shaft motor, wherein the motor output shaft is parallel to the central axis of the pressure wheel. The grinding wheel mounting platform can be moved until the rotating grinding wheel contacts the side of the straight teeth 7a on the outer edge of the pressure wheel to grind the two side surfaces of the straight teeth of the pressure wheel.

[0021] The grinding wheel mounting platform which can reciprocate in the transverse and longitudinal directions can be adopted as follows Figure 3 , Figure 4 , Figure 5 The structure shown includes a transverse guide rail 4a installed on the workbench 1 along the axial direction of the pressure wheel, a longitudinal guide rail 4b installed horizontally on the transverse guide rail and perpendicular to the transverse guide rail, and the dual output shaft motor 5 is installed on the longitudinal guide rail. The transverse guide rail 4a is driven by the transverse guide rail motor 4c, and the longitudinal guide rail 4b is manually driven by a person through a screw rod. The guide rail structure and its driving method are prior art and will not be described in detail here. The grinding wheel mounting table that can reciprocate in the transverse and longitudinal directions can also adopt other structural methods of the prior art, as long as it is convenient for the grinding wheel mounting table to move smoothly in the transverse and longitudinal directions.

[0022] The repair method of the pressure wheel repair device of the biomass pellet machine described in the utility model is as follows:

[0023] S1. The pressure wheel 7 is placed between two sets of support rollers 2, and the outer cylindrical surface 7b of the sinking step on both sides of the pressure wheel is placed on the roller; start the drive motor 3a, and drive the pressure wheel to rotate through the pressure wheel transmission rubber wheel 3b;

[0024] S2. Move and adjust the grinding wheel mounting table, adjust any one of the grinding wheels until the outer cylindrical surface of the grinding wheel contacts the straight teeth 7a on the outer edge of the pressure wheel and grinds until the wear-resistant layer on the outer surface of the pressure wheel is completely polished off, so that when welding new straight teeth later, the welding material and the pressure wheel substrate can be well combined to ensure that there is no cracking and no tooth loss;

[0025] S3. Perform tooth welding on the polished outer surface of the pressure wheel, such as Figure 6As shown, a CNC machine tool 8 specially used for surfacing is used. After being programmed by a programming controller 8a, the surfacing is automatically performed along the outer surface of the pressure wheel, and the straight teeth are welded sequentially to form a new full circle of straight teeth on the outer surface of the pressure wheel;

[0026] S4. Use a cylindrical grinder to grind the outer circle of the full circle spur gear into a round shape;

[0027] S5. Move and adjust the grinding wheel mounting table, first adjust the grinding wheel on one side until the outer side of the grinding wheel contacts one side of the spur teeth on the outer edge of the pressure wheel, grind one side of the spur teeth on the pressure wheel, then move and adjust the grinding wheel mounting table, adjust the grinding wheel on the other side until the outer side of the grinding wheel contacts the other side of the spur teeth on the outer edge of the pressure wheel, grind the other side of the spur teeth on the pressure wheel, until both sides of the spur teeth are ground flat.

[0028] The maximum outer diameter of the repaired roller is the same as that of a new roller, and the use effect is the same as that of a new roller. The roller can be repaired and used many times, which can save a lot of production costs for the enterprise and greatly reduce material waste.

[0029] After the ring die and the pressure wheel are repaired respectively, the repaired ring die and the pressure wheel are installed back on the biomass pellet machine to continue the production of biomass pellets.

Claims

1. A pressing wheel repair device for a biomass pellet machine, characterized in that: It comprises a workbench (1), two groups of supporting rollers (2) arranged on the workbench and used to place a pressing wheel (7), a driving device for driving the pressing wheel to rotate, and a grinding wheel system arranged beside the pressing wheel supporting device and capable of reciprocating in the horizontal and vertical directions; Each set of supporting rollers (2) comprises two rollers installed on a roller shaft and arranged at intervals; The driving device comprises a driving motor (3a) and a pressure wheel transmission rubber wheel (3b) mounted on the output shaft of the driving motor, wherein the pressure wheel transmission rubber wheel is tightly fitted to the outer circumferential surface of the sunken step on one side of the pressure wheel; the driving motor drives the pressure wheel transmission rubber wheel, thereby driving the pressure wheel to rotate; The grinding wheel system comprises a grinding wheel mounting platform which can reciprocate in the horizontal and vertical directions, a dual-output shaft motor (5) mounted on the grinding wheel mounting platform, and grinding wheels (6) symmetrically mounted on the front ends of the output shafts at both ends of the dual-output shaft motor, wherein the motor output shafts are parallel to the center axis of the pressure wheel; the grinding wheel mounting platform moves until the rotating grinding wheel contacts the spur tooth side surface of the outer edge of the pressure wheel, thereby grinding the spur tooth side surface of the pressure wheel.

2. The pressing wheel repairing device of the biomass pellet machine according to claim 1, characterized in that: The grinding wheel mounting platform capable of reciprocating in the transverse and longitudinal directions comprises a transverse guide rail (4a) mounted on the workbench (1) and arranged along the axis of the pressure wheel, and a longitudinal guide rail (4b) mounted horizontally on the transverse guide rail and perpendicular to the transverse guide rail, and the dual-output shaft motor (5) is mounted on the longitudinal guide rail.

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