Compression roller assembly of straw granulator

Abstract

The utility model discloses a compression roller assembly of a straw granulator, which comprises a compression roller base vertically fixed on a power input shaft; the compression roller cover plate is vertically fixed on the power input shaft, and the compression roller cover plate and the compression roller base are arranged in parallel at an interval; the two compression roller shafts are multi-step eccentric shafts, and the two compression roller shafts are symmetrically arranged between the compression roller base and the compression roller cover plate; the two compression rollers are respectively and rotatably arranged on the two compression roller shafts; one end of the compression roller shaft adjusting device is detachably fixed to one end of each of the two compression roller shafts, the other end of the compression roller shaft adjusting device is detachably arranged on the compression roller cover plate, and the compression roller shaft adjusting device is used for adjusting the eccentric positions of the two compression roller shafts; wherein the eccentric distance of the compression roller shaft is 9.5 cm. The straw granulator has the advantages that the straw particle forming effect is improved, the straw extrusion effect is adjusted, the compression roller abrasion cost is reduced, and the overall production efficiency of the straw granulator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and more specifically, to a pressing roller assembly of a straw pelletizing machine. Background Art

[0002] The straw pelletizer based on the pressure roller assembly and the ring die assembly utilizes the friction between the pressure roller and the ring die to extrude the straw material into shape, and is widely used in self-propelled straw pelletizer equipment.

[0003] At an appropriate rotation speed, suitable roller parameters can provide the best extrusion pressure to the material in the ring die cavity, shorten the extrusion molding time in the molding seat, optimize the molding time in the molding sleeve, and improve the straw molding particle effect. Utility Model Content

[0004] The utility model designs and develops a pressing roller component of a straw pelletizing machine, adopts the pressing roller component parameter setting to improve the straw pellet forming effect, and can adjust the eccentricity of the pressing roller, thereby adjusting the straw squeezing effect.

[0005] The technical solution provided by the utility model is:

[0006] A pressure roller assembly of a straw pelletizing machine, comprising:

[0007] A pressure roller base, which is vertically fixed to the power input shaft; and

[0008] A pressure roller cover plate, which is vertically fixed to the power input shaft, and the pressure roller cover plate is spaced and arranged in parallel with the pressure roller base;

[0009] Two pressure roller shafts, both of which are multi-stage eccentric shafts, and the two pressure roller shafts are symmetrically arranged between the pressure roller base and the pressure roller cover plate;

[0010] Two pressing rollers, which are rotatably arranged on the two pressing roller shafts respectively;

[0011] A pressure roller shaft adjusting device, one end of which is detachably fixed to one end of the two pressure roller shafts, and the other end of which is detachably arranged on the pressure roller cover plate, for adjusting the eccentric positions of the two pressure roller shafts;

[0012] Wherein, the eccentricity of the pressing roller shaft is 9.5 cm.

[0013] Preferably, the two pressure roller shafts are 6-order eccentric shafts, and from the largest diameter to the smallest diameter, they are the first order, the second order, the third order, the fourth order, the fifth order and the sixth order, the first order, the fourth order, the fifth order and the sixth order are coaxially arranged, and the second order and the third order are coaxially arranged.

[0014] Preferably, the diameter of the first step is 118 cm, the diameter of the second step is 85 cm, the third step is an external thread structure, and the diameter of the third step is 80 cm, the diameter of the fourth step is 50 cm, the fifth step is an external thread structure, and the diameter of the fifth step is 42 cm, and the sixth step is a gear structure.

[0015] Preferably, the length of the pressure roller shaft is 301.3 cm, the length of the first step is 64 cm, the length of the second step is 115.1 cm, the length of the third step is 39.2 cm, the length of the fourth step is 25 cm, the length of the fifth step is 32 cm, and the length of the sixth step is 26 cm.

[0016] Preferably, the power input shaft is the main shaft of the straw pelletizer.

[0017] Preferably, it also includes:

[0018] Two limiting grooves are symmetrically arranged on the pressure roller base;

[0019] Wherein, the first step is respectively fixed in the two limiting grooves, the pressure roller cover is fixed on the fourth step, and the fifth step and the sixth step pass through the pressure roller cover.

[0020] Preferably, the pressure roller shaft adjustment device comprises:

[0021] Two restraining brackets are respectively fixed on the pressure roller cover plate in a centrally symmetrical manner with the main axis of the straw pelletizer as the center;

[0022] Two first connecting rods, one end of which is fixed to the two sixth steps respectively;

[0023] Two second connecting rods, one end of which is hinged to the other end of the two first connecting rods respectively, and the other end of which is connected to the two restraining brackets respectively;

[0024] Wherein, the other ends of the two second connecting rods are threaded sections, which can be connected to the two constraint brackets at any position.

[0025] Preferably, it also includes:

[0026] Two groups of scrapers are fixed on the circumference of the pressure roller base in a centrally symmetrical manner with the center of the pressure roller base, and the two groups of scrapers are both inclined, with the lower ends of the two groups of scrapers close to the bottom plate of the ring die inner cavity and the high ends close to the ring die assembly of the straw pelletizer.

[0027] Preferably, the inner diameter of the two pressing rollers is 150 cm, the outer diameter of the two pressing rollers is 265 cm, and the thickness of the two pressing rollers is 75.5 cm.

[0028] Preferably, the number of teeth of the two pressing rollers is 65, and the two pressing rollers are both trapezoidal teeth, the maximum tooth spacing is 4.98 cm, and the minimum tooth spacing is 2.99 cm.

[0029] Beneficial effects of the utility model:

[0030] The roller assembly of the straw pelletizer provided by the utility model adopts the roller assembly parameter setting, which is easy to improve the straw particle forming effect, reduce the roller wear cost, and improve the production efficiency of the straw pelletizer as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the pressure roller assembly of the straw pelletizing machine described in the utility model.

[0032] Figure 2 It is a structural schematic diagram of the power input shaft of the utility model.

[0033] Figure 3 It is a schematic diagram of the overall structure of the pressure roller base of the utility model.

[0034] Figure 4 It is a side structural schematic diagram of the pressure roller base of the utility model.

[0035] Figure 5 It is a structural schematic diagram of the pressure roller shaft of the utility model.

[0036] Figure 6 It is a schematic diagram of the dimensions of the pressure roller shaft of the utility model.

[0037] Figure 7 It is a schematic diagram of the dimensions of the oil channel of the utility model.

[0038] Figure 8 The utility model is a schematic structural diagram of the pressure roller shaft and the pressure roller assembly.

[0039] Fig. 9 It is a structural schematic diagram of the pressing roller of the utility model.

[0040] Fig.10 It is a schematic diagram of the cross-sectional dimensions of the pressing roller of the utility model.

[0041] Fig.11 It is a schematic diagram of the overall dimensions of the pressing roller of the utility model.

[0042] Fig.12 It is a structural schematic diagram of the pressure roller shaft adjusting device of the utility model. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0044] like Figure 1 As shown, the utility model provides a pressure roller assembly of a straw pelletizing machine, comprising:

[0045] A pressure roller base 110 , a pressure roller cover plate 120 , two pressure roller shafts 130 , two pressure rollers 140 and a pressure roller shaft adjusting device 150 .

[0046] like Figure 2 As shown, the power input shaft 200 is a multi-step shaft, and the bottom flange of the power input shaft 200 is connected to the transmission input shaft by bolts, and the pressure roller base 110 and the pressure roller cover plate 120 are riveted to different steps on the power input shaft 300 by rivet covers and splines.

[0047] In this embodiment, the power input shaft 300 is the main shaft of the straw pelletizer.

[0048] like Figure 3 , Figure 4 As shown, the pressure roller base 110 is symmetrically provided with two limiting grooves, and the pressure roller cover plate 120 is symmetrically provided with two through holes.

[0049] like Figure 5 , Figure 6 , Figure 7 As shown, the two pressure roller shafts 130 are both 6-step eccentric shafts, which are the first step, the second step, the third step, the fourth step, the fifth step and the sixth step from the largest diameter to the smallest diameter, the first step, the fourth step, the fifth step and the sixth step are coaxially arranged, the second step and the third step are coaxially arranged, and the eccentricity is 9.5 cm, the diameter of the first step is 118 cm, the diameter of the second step is 85 cm, the third step is an external thread structure, and the diameter of the third step is 80 cm, the diameter of the fourth step is 50 cm, and the fifth step is an external thread structure. The roller cover 120 has a threaded structure, and the diameter of the fifth step is 42 cm. The sixth step is a gear structure. The third and fifth steps are used to assemble nuts, thereby limiting the axial position of the roller cover 120. The sixth step is an involute spline tooth. The total length of the roller shaft is 301.3 cm. The length of the first step is 64 cm. The length of the second step is 115.1 cm. The length of the third step is 39.2 cm. The length of the fourth step is 25 cm. The length of the fifth step is 32 cm. The length of the sixth step is 26 cm.

[0050] The first step is fixed in the two limit grooves respectively, the pressure roller cover plate 120 is fixed on the fourth step through a through hole, and the fifth and sixth steps pass through the pressure roller cover plate 120 through two through holes, and the pressure roller shaft adjustment device 150 is fixedly connected to the sixth step gear structure.

[0051] like Figure 8 As shown, the two pressure rollers 140 are rotatably sleeved on the second steps of the two pressure roller shafts 130 through a pair of tapered roller bearings 131 and positioning pins, and are coaxially corresponding to the eccentric shafts corresponding to their installation positions.

[0052] In this embodiment, an oil channel is laterally arranged in the second step for adding lubricant to the tapered roller bearing 131 .

[0053] like Fig. 9 , Fig.10 , Fig.11 As shown, the inner diameter of the two pressing rollers 140 is 150 cm, the outer diameter is 265 cm, the inner thickness is 75.5 cm, and the outer thickness is 52 cm. The number of teeth of the two pressing rollers 140 is 65, and all are trapezoidal teeth. The maximum tooth spacing is 4.98 cm, and the minimum tooth spacing is 2.99 cm.

[0054] like Fig.12 As shown, the roller shaft adjustment device 150 includes two constraint brackets 151, two first connecting rods 152 and two second connecting rods 153. The two constraint brackets 151 are fixed on the roller cover plate 120 in a centrally symmetrical manner with the power input shaft 200 as the center. One end of the two first connecting rods 152 is fixed to the gear structure of the two roller shafts 130 by bolts. One end of the two second connecting rods 153 is hinged to the other end of the two first connecting rods 152, and the other end is connected to the two constraint brackets 151 respectively. The other end of the second connecting rod 153 is a threaded section, which can be connected to the two constraint brackets 151 by bolts at any position, so as to adjust the rotation angle of the second connecting rod 153 relative to the roller shaft 130, that is, to adjust the eccentric position of the roller shaft 130, thereby driving the axial position of the roller 140 to deflect, thereby adjusting the size of the space gap between the roller 140 and the inner wall of the ring die forming cavity, and changing the straw particle forming effect and granulation effect.

[0055] The gap size between the two pressing rollers 140 and the inner wall of the ring die forming cavity is 0.1-0.3 mm, and the gap size setting must ensure that the pressing rollers 140 rotate synchronously about one third of a circle due to friction while revolving one circle.

[0056] A ring die inner cavity bottom plate 171 is also provided at the bottom of the pressing roller assembly for containing straw. Two groups of scrapers 160 are welded on the circumference of the pressing roller base 110, and the two groups of scrapers 160 are centrally symmetrically arranged with the center of the pressing roller base 110, and are both inclined. The lower ends of the two groups of scrapers 160 are close to the ring die inner cavity bottom plate 171, and the high ends are close to the ring die assembly of the straw pelletizer. When the two groups of scrapers 160 rotate with the pressing roller base 110, the crushed straw or straw powder between the ring die inner cavity bottom plate 171 and the ring die assembly enters the gap between the pressing roller 140 and the inner wall of the ring die forming cavity again with the rotation of the pressing roller 140, and is finally squeezed into the ring die assembly to form pellets.

[0057] The working process of the pressure roller assembly described in the utility model is:

[0058] The revolution of the power input shaft 200 drives the pressing roller shaft 130 to rotate synchronously, and the pressing roller shaft 130 drives the pressing roller 140 to rotate while realizing the revolution. Due to the friction between the pressing roller 140, the straw and the ring die assembly, the pressing roller 140 rotates synchronously due to the friction while revolving, so that the straw in the pelletizer cavity is continuously pressed into the ring die assembly.

[0059] The roller assembly of the straw pelletizer provided by the utility model adopts the roller assembly parameter setting, which is easy to improve the straw particle forming effect, reduce the roller wear cost, and improve the production efficiency of the straw pelletizer as a whole.

[0060] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A roller assembly for a straw pelletizing machine, characterized in that: include: A pressure roller base, which is vertically fixed on the power input shaft; as well as A pressure roller cover plate, which is vertically fixed to the power input shaft, and the pressure roller cover plate is spaced and arranged in parallel with the pressure roller base; Two pressure roller shafts, both of which are multi-stage eccentric shafts, and the two pressure roller shafts are symmetrically arranged between the pressure roller base and the pressure roller cover plate; Two pressing rollers, which are rotatably arranged on the two pressing roller shafts respectively; A pressure roller shaft adjusting device, one end of which is detachably fixed to one end of the two pressure roller shafts, and the other end of which is detachably arranged on the pressure roller cover plate, for adjusting the eccentric positions of the two pressure roller shafts; Wherein, the eccentricity of the pressing roller shaft is 9.5 cm.

2. The pressure roller assembly of the straw pelletizing machine according to claim 1, characterized in that: The two pressure roller shafts are 6-stage eccentric shafts, and from the largest diameter to the smallest diameter, they are the first stage, the second stage, the third stage, the fourth stage, the fifth stage and the sixth stage, the first stage, the fourth stage, the fifth stage and the sixth stage are coaxially arranged, and the second stage and the third stage are coaxially arranged.

3. The pressure roller assembly of the straw pelletizing machine according to claim 2, characterized in that: The diameter of the first step is 118 cm, the diameter of the second step is 85 cm, the third step is an external thread structure, and the diameter of the third step is 80 cm, the diameter of the fourth step is 50 cm, the fifth step is an external thread structure, and the diameter of the fifth step is 42 cm, and the sixth step is a gear structure.

4. The pressure roller assembly of the straw pelletizing machine according to claim 3, characterized in that: The length of the pressure roller shaft is 301.3 cm, the length of the first step is 64 cm, the length of the second step is 115.1 cm, the length of the third step is 39.2 cm, the length of the fourth step is 25 cm, the length of the fifth step is 32 cm, and the length of the sixth step is 26 cm.

5. The pressing roller assembly of the straw pelletizing machine according to claim 4, characterized in that: The power input shaft is the main shaft of the straw pelletizer.

6. The pressing roller assembly of the straw pelletizing machine according to claim 5, characterized in that: Also includes: Two limiting grooves are symmetrically arranged on the pressure roller base; Wherein, the first step is respectively fixed in the two limiting grooves, the pressure roller cover is fixed on the fourth step, and the fifth step and the sixth step pass through the pressure roller cover.

7. The pressing roller assembly of the straw pelletizing machine according to claim 6, characterized in that: The pressure roller shaft adjusting device comprises: Two restraining brackets are respectively fixed on the pressure roller cover plate in a centrally symmetrical manner with the main axis of the straw pelletizer as the center; Two first connecting rods, one end of which is fixed to the two sixth steps respectively; Two second connecting rods, one end of which is hinged to the other end of the two first connecting rods respectively, and the other end of which is connected to the two restraining brackets respectively; Wherein, the other ends of the two second connecting rods are threaded sections, which can be connected to the two constraint brackets at any position.

8. The pressing roller assembly of the straw pelletizing machine according to claim 7, characterized in that: Also includes: Two groups of scrapers are fixed on the circumference of the pressure roller base in a centrally symmetrical manner with the center of the pressure roller base, and the two groups of scrapers are both inclined, with the lower ends of the two groups of scrapers close to the bottom plate of the ring die inner cavity and the high ends close to the ring die assembly of the straw pelletizer.

9. The pressing roller assembly of the straw pelletizing machine according to claim 8, characterized in that: The inner diameter of the two pressing rollers is 150 cm, the outer diameter of the two pressing rollers is 265 cm, and the thickness of the two pressing rollers is 75.5 cm.

10. The pressing roller assembly of the straw pelletizing machine according to claim 9, characterized in that: The number of teeth of the two pressing rollers is 65, and both of the two pressing rollers have trapezoidal teeth, the maximum tooth spacing is 4.98 cm, and the minimum tooth spacing is 2.99 cm.

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