Press roller assembly and ring die assembly of straw granulator
By designing adjustable press roller assembly and ring mold assembly in the straw granulator, the problems of low efficiency and pollution of traditional equipment are solved, and efficient and stable straw pellet forming and simplified equipment maintenance are achieved.
Patent Information
- Application Number
- CN202420973731.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2024-12-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional straw granulators have cumbersome operations, large area, low production efficiency, high cost, and are prone to secondary pollution. The existing technology is difficult to effectively improve the straw pellet forming effect and granulation efficiency.
A straw granulator including a press roller assembly and a ring mold assembly is designed. The gap between the press roller assembly and the ring mold assembly is adjusted through the press roller shaft adjustment device, the straw particle forming effect is changed, and the straw particles are formed by alternative The molded seat structure simplifies maintenance and avoids slippage and mechanical wear.
The quality of straw pellet forming, the improvement of production efficiency and the reduction of maintenance costs are achieved, the granulator equipment is simplified, and the stability and efficiency of operations are ensured.
Smart Images
Figure CN222267052U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of agricultural machinery, and more specifically, to a pressure roller assembly and a ring die assembly of a straw pelletizing machine. Background Art
[0002] In the context of resource crisis and environmental pollution, straw resources are becoming increasingly important. Traditional straw pelleting machines are cumbersome to operate, occupy a large area, have low production efficiency, high costs, and are prone to secondary pollution. In recent years, with the continuous adjustment of the country's biomass energy development policy, domestic straw pellet machines have gradually developed. Especially with the introduction of advanced processing technology and technology into the pelleting industry, some domestic companies and institutions are also developing new straw pelleting equipment, which will surely lead to major changes in the straw pelleting industry.
[0003] Therefore, the ring die assembly and the pressure roller assembly of the straw pelletizer have become the key components to improve the straw pellet forming effect, which has important practical significance for saving resources, protecting the environment and achieving sustainable development of agriculture. Utility Model Content
[0004] The utility model designs and develops a roller assembly for a straw pelletizing machine.
[0005] The utility model also designs and develops a ring die assembly for a straw pelletizing machine.
[0006] The technical solution provided by the utility model is:
[0007] A pressure roller assembly of a straw pelletizing machine, comprising:
[0008] A pressure roller base, which is vertically fixed to the power input shaft; and
[0009] 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;
[0010] Two pressing roller shafts, both of which are eccentric shafts, and the two pressing roller shafts are symmetrically arranged between the pressing roller base and the pressing roller cover plate;
[0011] Two pressing rollers, which are rotatably arranged on the two pressing roller shafts respectively;
[0012] The pressure roller shaft adjusting device has one end detachably fixed to one end of the two pressure roller shafts, and the other end detachably arranged on the pressure roller cover plate, for adjusting the eccentric position of the two pressure roller shafts.
[0013] Wherein, the gap size between the two pressing rollers and the ring die assembly of the straw pelletizer is 0.1-0.3 mm.
[0014] Preferably, the power input shaft is the main shaft of the straw pelletizer.
[0015] Preferably, it also includes:
[0016] Two limiting grooves are symmetrically arranged on the pressure roller base;
[0017] Wherein, one end of the two pressing roller shafts passes through the pressing roller cover plate, and the other end is respectively fixed in the two limiting grooves.
[0018] Preferably, the pressure roller shaft adjustment device comprises:
[0019] 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;
[0020] Two first connecting rods, one end of which is respectively fixed to one end of the two pressure roller shafts;
[0021] 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;
[0022] 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.
[0023] Preferably, it also includes:
[0024] A bottom plate, which is fixed on the discharging structure of the straw pelletizer;
[0025] A lower pressure cover, which is annular and fixed to the bottom plate, so that the lower pressure cover and the bottom plate form a receiving cavity;
[0026] Wherein, the pressure roller base and the pressure roller cover plate are both arranged in the accommodating cavity, and the power input shaft can rotatably pass through the bottom plate.
[0027] Preferably, it also includes:
[0028] 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 and the high ends close to the ring die assembly of the straw pelletizer.
[0029] A ring die assembly for a straw pelletizing machine, comprising:
[0030] A ring die support frame, which is a ring structure; and
[0031] A plurality of die holes are evenly arranged in the circumference of the ring die support frame, and limited steps are arranged inside the plurality of die holes;
[0032] A plurality of long forming sleeves, which are arranged in the plurality of die holes in a one-to-one correspondence, and one end of the plurality of long forming sleeves is respectively engaged with the limiting step;
[0033] A plurality of forming seats, one end of which is respectively disposed in the plurality of die holes in a one-to-one correspondence, and the other end is clamped on the inner side of the ring die support frame;
[0034] Among them, one end of the multiple forming seats is abutted against one end of the multiple forming long sleeves, the ring die support frame is sleeved on the outside of the roller assembly of the straw pelletizer, the roller assembly adopts the roller assembly described in any one of the above items, and the ring die support frame is arranged in the same plane as the two rollers, and the gap size between the two rollers and the nearest multiple forming seats is 0.1-0.3mm.
[0035] Preferably, it also includes:
[0036] The upper pressure cover is an annular structure, and the upper pressure cover is arranged on the ring die support frame.
[0037] Preferably, the plurality of long forming sleeves each include:
[0038] A first barrel end, one end of which is disposed in the plurality of die holes and the other end of which extends outwardly of the ring die support frame;
[0039] A first flange, which is integrally provided at one end of the first barrel end, and the first flange is engaged with the limiting step;
[0040] Wherein, the first barrel end is interference fit with a plurality of die holes.
[0041] Preferably, the plurality of forming seats include;
[0042] a second barrel end disposed within the plurality of die holes;
[0043] A second flange, which is integrally provided at one end of the second barrel end, and the second flange is engaged with the inner side of the ring die support frame;
[0044] The second barrel end is interference fit with a plurality of die holes, and the other end of the second barrel end abuts against the first flange.
[0045] Beneficial effects of the utility model:
[0046] (1) The roller assembly of the straw pelletizer provided by the utility model can adjust the gap between the roller assembly and the ring die assembly through the combination of the roller shaft adjustment device, the roller shaft and the roller, thereby changing the straw pellet forming effect and pelletizing efficiency, avoiding slipping, ensuring the pellet forming quality, reducing the mechanical wear between the pelletizer parts, greatly simplifying the equipment of the straw pelletizer, and ensuring the stability of the operation.
[0047] (2) The ring die assembly of the straw pelletizer provided by the utility model can be easily replaced through a replaceable molding seat structure, avoiding the need to replace the long molding sleeve, thereby reducing maintenance costs and improving production efficiency, greatly simplifying the equipment of the straw pelletizer, and greatly improving the molding effect while ensuring continuous and stable operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0048] Figure 1 It is a schematic diagram of the overall structure of the straw pelletizing machine described in the utility model.
[0049] Figure 2 It is a structural schematic diagram of the pressure roller assembly of the utility model.
[0050] Figure 3 This is a schematic diagram of the main shaft structure of the straw pelletizing machine described in the utility model.
[0051] Figure 4 This is a schematic diagram of the rivet cover structure of the utility model.
[0052] Figure 5 It is a side view dimension diagram of the rivet cover described in the utility model.
[0053] Figure 6 It is a schematic diagram of the top view dimensions of the rivet cover described in the utility model.
[0054] Figure 7 It is a structural schematic diagram of the pressure roller base of the utility model.
[0055] Figure 8 It is a structural schematic diagram of the assembly of the pressure roller base and two sets of scrapers of the utility model.
[0056] Fig. 9 It is a side structural schematic diagram of the pressure roller base of the utility model.
[0057] Fig.10 It is a structural schematic diagram of the pressure roller shaft of the utility model.
[0058] Fig.11 It is a schematic diagram of the assembly structure of the pressure roller shaft and the pressure roller of the utility model.
[0059] Fig.12 It is a structural schematic diagram of the pressure roller shaft adjusting device of the utility model.
[0060] Fig.13 It is a structural schematic diagram of the ring mold assembly of the utility model.
[0061] Fig.14 It is a structural schematic diagram of the ring die support frame described in the utility model.
[0062] Fig.15It is a structural schematic diagram of the molding long sleeve described in the utility model.
[0063] Fig.16 It is a structural schematic diagram of the forming seat of the utility model. DETAILED DESCRIPTION
[0064] 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.
[0065] like Figure 1 , Figure 2 As shown, the utility model provides a roller assembly of a straw pelletizer. The straw pelletizer drives the power input shaft 300 to rotate through a gearbox via a transmission gear set, thereby driving the roller assembly 100 to revolve and rotate along with the power input shaft 300.
[0066] The pressure roller assembly 100 includes: 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 adjustment device 150 .
[0067] like Figure 3 , Figure 4 As shown, the power input shaft 300 is a multi-step shaft, and the bottom flange of the power input shaft 300 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 180 and splines.
[0068] In this embodiment, the power input shaft 300 is the main shaft of the straw pelletizer.
[0069] like Figure 5 , Figure 6 As shown, the size of the rivet cover 180 is shown.
[0070] like Figure 7 , Figure 8 , Fig. 9 As shown, the pressure roller base 110 is symmetrically provided with two limiting grooves, such as Fig.10 As shown, the two pressure roller shafts 130 are both multi-stage stepped eccentric shafts, and their small diameter ends are both gear structures. The small diameter ends pass through the pressure roller cover plate 120 and are connected to the pressure roller shaft adjustment device 150, and the large diameter ends are respectively fixed in two limit grooves.
[0071] In this embodiment, the two pressure roller shafts 130 are three-step stepped eccentric shafts, and the smallest diameter end and the largest diameter end are coaxially arranged.
[0072] like Fig.11As shown, the two pressure rollers 140 are rotatably arranged on 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.
[0073] 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 300 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.
[0074] 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.
[0075] A bottom plate 171 is also coaxially arranged on the power input shaft 300, and the power input shaft 300 can rotatably pass through the bottom plate 171. The bottom plate 171 is fixed on the discharge structure of the straw pelletizer and is relatively fixed. An annular lower pressure cover 172 is coaxially fixed on the bottom plate by bolts, so that the lower pressure cover 172 and the bottom plate 171 form a accommodating cavity, and the pressure roller base 110 and the pressure roller cover plate 120 are both arranged in the accommodating cavity, and the pressure roller base 110 is arranged close to the bottom plate 171.
[0076] Two groups of scrapers 160 are welded on the circumference of the roller base 110, and the two groups of scrapers 160 are symmetrically arranged with respect to the center of the roller base 110, and are both inclined. The lower ends of the two groups of scrapers 160 are close to the 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 roller base 110, the crushed straw or straw powder between the bottom plate and the lower pressure cover rotates with the roller 140 and enters the gap between the roller 240 and the inner wall of the ring die forming cavity again, and is finally squeezed into the ring die assembly to form pellets.
[0077] The press roller assembly of the straw pelletizing machine provided by the utility model can adjust the gap size between the press roller assembly and the ring die assembly through the combination of the press roller shaft adjusting device, the press roller shaft and the press roller, thereby changing the straw pelletizing effect and pelletizing efficiency, and can avoid slipping, ensure the pelletizing quality, reduce the mechanical wear between the pelletizing machine parts, greatly simplify the equipment of the straw pelletizing machine, and ensure the stability of the operation.
[0078] like Figure 1 , Fig.13 As shown, the utility model provides a ring die assembly of a straw pelletizer, and the ring die assembly 200 specifically includes:
[0079] A ring die support frame 210 , a plurality of die holes 220 , a plurality of molding seats 230 and a plurality of molding long sleeves 240 .
[0080] The ring die support frame 210 is an annular structure and is arranged on the lower pressure cover 172. The ring die support frame 210 is arranged on the outside of the pressure roller assembly. At the same time, the ring die support frame 210 and the pressure roller 140 are arranged in the same plane; Fig.14 As shown, the multiple mold holes 220 are evenly distributed in the circumference of the ring mold support frame 210, and limiting steps are arranged inside the multiple mold holes 220, so that the inner diameters of the multiple mold holes 220 close to the inner side are larger than the inner diameters close to the outer side; multiple molding long sleeves 240 are arranged in the multiple mold holes 220 in a one-to-one correspondence, and one ends of the multiple molding long sleeves 240 are respectively engaged on the limiting steps; one ends of the multiple molding seats 230 are respectively arranged in the multiple mold holes 220 in a one-to-one correspondence and abut against one ends of the multiple molding long sleeves 240, and the other ends are engaged on the inner side of the ring mold support frame 210.
[0081] The number of the plurality of mold holes 220 , the plurality of molding long sleeves 240 and the plurality of molding seats 230 are the same and correspond one to one. In the present embodiment, the number of the mold holes 220 is 36.
[0082] In this embodiment, the gap size between the two pressing rollers 140 and the nearest plurality of forming seats 230 is 0.1-0.3 mm.
[0083] like Figure 1 As shown, an annular upper pressure cover 173 is fixed to the ring die support frame 210 by bolts to prevent broken straw or straw powder from flying out.
[0084] like Fig.15 As shown, the molding sleeve 240 includes a first barrel end 241 and a first flange 242. One end of the first barrel end 241 is arranged in the die hole 220, and the other end extends to the outside of the ring die support frame 210. The first flange 242 is integrally arranged at one end of the first barrel end 241, and the first flange 242 is engaged with the limiting step.
[0085] The first barrel end 241 is interference fit with the die hole 220 .
[0086] like Fig.16 As shown, the molding seat 230 includes a second barrel end 231 and a second flange 232. The second barrel end 231 is disposed in the die hole 220 and abuts against the first flange 242. The second flange 232 is integrally disposed at one end of the second barrel end 231 and is clamped on the inner side of the ring die support frame 210.
[0087] The second barrel end 231 is interference fit with the die hole 220 .
[0088] The working process of the pressure roller assembly and the ring die assembly described in the utility model is:
[0089] The revolution of the power input shaft 300 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 ring die support frame 210, the pressing roller 140 and the straw, the pressing roller 140 rotates synchronously due to the friction force while revolving, so that the straw in the pelletizer cavity is continuously pressed into the forming seat 230 and the forming long sleeve 240. Under the continuous squeezing action of the pressing roller 140 and the ring die support frame 210, it is finally squeezed and formed, and the formed pellets are squeezed out from the outer end of the forming long sleeve 240. Because the forming seat 230 in the ring die support frame 210 is close to the pressing roller 140, it is under great pressure and is very easy to wear. By separately designing the forming seat 230, it can be easily replaced, avoiding frequent replacement of the forming long sleeve 240, thereby reducing maintenance costs and improving production efficiency.
[0090] When the pelletizer is working, the pressing roller 140 is always in a rotating state relative to the ring die support frame 210. Since there is always straw between the ring die support frame 210 and the pressing roller 140, there must always be a certain gap between the ring die support frame 210 and the pressing roller 140. The size of the gap determines the straw forming effect. If the gap is too large, the pressing roller 140 will slip relative to the ring die support frame 210, affecting the pellet forming quality; if the gap is too small, the friction between the pressing roller 140 and the ring die support frame 210 will increase, aggravating the wear of the pelletizer parts. Therefore, the pressing roller shaft 130 and the pressing roller shaft adjustment device 150 are used to make the gap size between the two pressing rollers 140 and the nearest multiple forming seats 230 be 0.1-0.3mm.
[0091] The ring die assembly of the straw pelletizer provided by the utility model can be easily replaced through a replaceable molding seat structure, avoiding the need to replace the long molding sleeve, thereby reducing maintenance costs and improving production efficiency, greatly simplifying the equipment of the straw pelletizer, and greatly improving the molding effect while ensuring continuous and stable operation.
[0092] 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 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 gap size between the two pressing rollers and the ring die assembly of the straw pelletizer is 0.1-0.3 mm.
2. The pressure roller assembly of the straw pelletizing machine according to claim 1, characterized in that: The power input shaft is the main shaft of the straw pelletizer.
3. The pressure roller assembly of the straw pelletizing machine according to claim 2, characterized in that: Also includes: Two limiting grooves are symmetrically arranged on the pressure roller base; Wherein, one end of the two pressing roller shafts passes through the pressing roller cover plate, and the other end is respectively fixed in the two limiting grooves.
4. The pressure roller assembly of the straw pelletizing machine according to claim 3, 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 respectively fixed to one end of the two pressure roller shafts; 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.
5. The pressing roller assembly of the straw pelletizing machine according to claim 4, characterized in that: Also includes: A bottom plate, which is fixed on the discharging structure of the straw pelletizer; A lower pressure cover, which is annular and fixed to the bottom plate, so that the lower pressure cover and the bottom plate form a receiving cavity; Wherein, the pressure roller base and the pressure roller cover plate are both arranged in the accommodating cavity, and the power input shaft can rotatably pass through the bottom plate.
6. The pressure roller assembly of the straw pelletizing machine according to claim 5, 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 and the high ends close to the ring die assembly of the straw pelletizer.
7. A ring die assembly for a straw pelletizing machine, characterized in that: include: The ring die support frame is a ring structure; as well as A plurality of die holes are evenly arranged in the circumference of the ring die support frame, and limited steps are arranged inside the plurality of die holes; A plurality of long forming sleeves, which are arranged in the plurality of die holes in a one-to-one correspondence, and one end of the plurality of long forming sleeves is respectively engaged with the limiting step; A plurality of forming seats, one end of which is disposed in the plurality of die holes in a one-to-one correspondence, and the other end of which is clamped on the inner side of the ring die support frame; Among them, one end of the multiple forming seats is abutted against one end of the multiple forming long sleeves, the ring die support frame is sleeved on the outside of the roller assembly of the straw pelletizer, the roller assembly adopts the roller assembly as described in any one of claims 1-6, and the ring die support frame is arranged in the same plane as the two rollers, and the gap size between the two rollers and the nearest multiple forming seats is 0.1-0.3mm.
8. The ring die assembly of the straw pelletizing machine according to claim 7, characterized in that: Also includes: The upper pressure cover is an annular structure, and the upper pressure cover is arranged on the ring die support frame.
9. The ring die assembly of the straw pelletizing machine according to claim 8, characterized in that: The plurality of molding long sleeves all include: A first barrel end, one end of which is disposed in the plurality of die holes and the other end of which extends outwardly of the ring die support frame; A first flange, which is integrally provided at one end of the first barrel end, and the first flange is engaged with the limiting step; Wherein, the first barrel end is interference fit with a plurality of die holes.
10. The ring die assembly of the straw pelletizing machine according to claim 8, characterized in that: The plurality of forming seats include: a second barrel end disposed within the plurality of die holes; A second flange, which is integrally provided at one end of the second barrel end, and the second flange is engaged with the inner side of the ring die support frame; The second barrel end is interference fit with a plurality of die holes, and the other end of the second barrel end abuts against the first flange.