Plunger type biomass circular mold pellet fuel forming device

Abstract

The invention discloses a plunger type biomass circular mold pellet fuel forming device, and relates to the technical field of biomass fuel preparation, the plunger type biomass circular mold pellet fuel forming device comprises an anti-blocking rotating blade used for preventing a feed port from being blocked, the anti-blocking rotating blade, a cutter and a cam are connected to a main shaft and synchronously rotate with the main shaft, the main shaft is perpendicular to the ground, and the cutter and the cam are arranged on the main shaft. An anti-blocking rotating blade at the uppermost end of a main shaft evenly pushes crushed raw materials to the position between a guiding ring die and a ring die below, a cam drives a male die to do reciprocating motion parallel to the ground, the male die extrudes the falling powdery straw raw materials into a hole of the ring die and penetrates through the ring die, and then a cutter cuts off granular fuel. Heat is generated by friction between the male die and the guide ring die, so that oil is introduced into the guide ring die through an oil pump to reduce the temperature. The guide ring die is utilized to ensure that the ejector rod part of the male die can accurately enter the hole of the ring die to accurately push and press raw materials, so that the particle forming quality is better, and the problem that the ring die is easy to block can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of biomass fuel preparation, in particular to a plunger-type biomass ring-die particle fuel forming device. Background Art

[0002] The inevitable choice to solve the energy problem is to adopt clean, renewable and sustainable energy. As a new type of renewable clean energy, biomass fuel pellets have the same carbon fixation as carbon release, and are the best substitute for traditional energy sources such as coal, diesel and natural gas. As the only renewable energy that can be directly converted into fuel, the large-scale application of biomass energy will help solve the current environmental problems and energy crisis.

[0003] At present, many types of biomass fuel pellet forming machines have been developed in China, but these machines generally have the disadvantages of low pellet forming quality, low forming efficiency, easy clogging, and short life. As shown in the publication number CN104906999B, the forming method is: the raw material is introduced into the ring die, and the raw material is extruded into the ring die through the roller rolling to form a granular shape. The pellet fuel extruded in this process has poor forming quality, the pellets are relatively loose, and the ring die holes are easy to clog. This is also the processing method of most biomass pellet fuel forming devices at present. The looseness of biomass pellet fuel will have a certain impact on its calorific value. Generally, more compact biomass pellet fuel has a higher calorific value. This is because compact pellet fuel can more effectively maintain its shape during combustion, providing better air circulation and heat transfer. Loose biomass pellet fuel may be easy to scatter during the combustion process, resulting in incomplete combustion, thereby reducing the calorific value. As shown in the publication number CN219804589U, the design for solving the problem of raw material clogging at the feed port is too complicated, and a separate motor drive is required, which increases energy consumption. Summary of the invention

[0004] The technical problem to be solved by the present invention is: to solve the problems of poor particle forming effect, low production efficiency, easy clogging of ring die holes and high energy consumption in the anti-clogging link of the feed port in the existing biomass pellet fuel preparation device. In order to achieve the above purpose, the present invention provides the following technical solutions: a plunger-type biomass ring die pellet fuel forming device, comprising an anti-clogging rotating blade for preventing the feed port from being blocked, the anti-clogging rotating blade, the cutter and the cam are all connected to the main shaft, and are driven by the main shaft and rotate synchronously with the main shaft, eliminating the extra energy consumption in the anti-clogging link of the feed port, the main shaft is perpendicular to the ground, and the anti-clogging rotating blade at the uppermost end of the main shaft pushes the crushed straw raw material evenly to between the guide ring die and the ring die below, and the cam drives the punch to make a reciprocating motion parallel to the ground, which is driven by the punch. The ejector part squeezes the powdered straw raw material between the guide ring die and the ring die into the hole of the ring die and finally passes through the ring die. Finally, the cutter rotating synchronously with the main shaft cuts off the granular fuel extending out of the hole of the ring die. During this working process, the punch and the guide ring die generate heat due to friction, so the oil pump is used to introduce circulating oil into the guide ring die to reduce the temperature, thereby increasing the life of the parts. The particle forming system is vertically installed on the reducer, and the reducer and the motor are connected to the motor in the horizontal direction through a connecting flange and fixed on the support plate. The reducer is used to reduce the speed and increase the torque.

[0005] Preferably, the oil inlet is located at the lower part of the guide ring die, and the oil outlet is located at the upper part of the guide ring die;

[0006] Preferably, the structure of the punch is composed of a base and a push rod. The punch is used as a follower of the cam, and moves back and forth in a straight line with the rotation of the cam. The punch base is designed as a semi-cylinder, and its base forms a linear contact with the far point of the cam, which reduces the friction between the contact surface of the cam and the punch.

[0007] Preferably, the device has 24 punches, each of which has 10 ejector rods on its base, and a total of 240 ejector rods are matched one by one with the 240 holes of the guide ring die and the ring die, respectively. The front end of the ejector rod directly contacts and squeezes the biomass raw material in the holes of the ring die. During the compression process, in order to automatically reset the punch after movement, a spring is added to the root of each ejector rod. Under the action of the spring, the punch base can always keep in contact with the cam, thereby ensuring the continuity of the work;

[0008] Preferably, the guide ring die is a closed structure with a hollow interior, and is communicated with the outside only through an oil inlet and an oil outlet, and the oil inlet and the oil outlet are respectively connected to an oil inlet pipeline and an oil outlet pipeline on an oil pump;

[0009] Preferably, the KAF37 helical gear-bevel gear reducer is selected because the structural size of the device is not large, the transmission ratio is not large, the operation is relatively stable, and the output torque of the reducer is not high.

[0010] Beneficial effects of the present invention:

[0011] The present invention uses a guide ring die to ensure that the top rod of the punch can accurately enter the hole of the ring die to accurately push the crushed straw raw material. Compared with the existing roller-type ring die pelletizer, the pellet fuel molding quality is better, the problem of easy clogging of the ring die is avoided, and the production efficiency is significantly improved. In addition, the anti-blocking rotating blades, the cutter and the cam are all fixed on the main shaft in a nested manner, and are driven by the main shaft to achieve synchronous rotation with the main shaft, reducing the additional energy consumption of the pelletizing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is as follows Figures 1 to 9 A brief description

[0013] Figure 1 It is an axonometric view of the present invention

[0014] Figure 2 It is the front view of the present invention

[0015] Figure 3 It is the left view of the present invention

[0016] Figure 4 It is a top view of the present invention

[0017] Figure 5 This is an internal axonometric view of the molding system of the present invention.

[0018] Figure 6 This is the internal front view of the molding system of the present invention

[0019] Figure 7 This is a front cross-sectional view of the interior of the molding system of the present invention.

[0020] Figure 8 It is the axonometric drawing of the punch of the present invention

[0021] Fig. 9 This is the axonometric view of the guide ring die of the present invention

[0022] As shown in the figure, 1-support plate, 2-reducer, 3-connecting flange, 4-motor, 5-lower base, 6-spindle, 7-lower flange, 8-deep groove ball bearing, 9-cam, 10-sleeve, 11-ring die, 12-box, 13-deep groove ball bearing, 14-upper flange, 15-upper bearing end cover, 16-guide plate, 17-upper end cover, 18-feed hopper, 19-cutter, 20-oil inlet, 21-oil outlet, 22-oil tank, 23-oil pump, 24-oil inlet pipe, 25-oil outlet pipe, 26-connecting pipe, 27-export plate, 28-six Angle head bolt, 29-washer, 30-nut, 31-washer, 32-nut, 33-hexagon head bolt, 34-hexagon head bolt, 35-nut, 36-hexagon head bolt, 37-square head bolt, 38-countersunk bolt, 39-round head bolt, 40-hexagon head bolt, 41-hexagon head bolt, 42-punch, 43-spring, 44-oil retaining ring, 45-lower bearing end cover, 46-hexagon head bolt, 47-elastic retaining ring for shaft, 48-flat key, 49-oil pump bracket, 50-hexagon head bolt, 51-mixing blade, 52-guide ring die. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described in detail below

[0024] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: a plunger-type biomass ring mold pellet fuel forming device, mainly comprising a pellet forming system, a lubrication system, a reducer (2), an electric motor (4), a connecting flange (3), and a support plate (1), characterized in that: the pellet forming system is vertically installed on the reducer (2), the reducer (2) and the electric motor (4) are connected in the horizontal direction through the connecting flange (3) and are all fixed on the support plate (1), the oil inlet pipe (24) and the oil outlet pipe (25) of the lubrication system are respectively connected to the guide pipe (24) and the guide pipe (25). At the oil inlet (20) and the oil outlet (21) of the guide ring die (52), the oil inlet pipe (24) is connected to the oil pump (23), and the oil pump (23) supplies oil to the oil inlet pipe (24). The oil pump (23) is fixed to the oil tank (22) by an oil pump bracket (49). A connecting pipe (26) is provided between the oil tank (22) and the oil pump (23), and the oil pump (23) continuously pumps oil into the oil tank (22) through the connecting pipe (26). The other end of the oil tank (22) is connected to the oil outlet pipe (25) so as to receive the oil discharged from the guide ring die (52). The molding system mainly comprises an upper end cover (17), a box body (12), a feed hopper (18), a lower base (5), a main shaft (6), a lower flange (7), a deep groove ball bearing (8), a cam (9), a sleeve (10), a ring die (11), a deep groove ball bearing (13), an upper flange (14), an upper bearing end cover (15), a guide plate (16), a cutter (19), an oil inlet (20), an oil outlet (21), an outlet plate (27), a punch (4 2), a spring (43), an oil retaining ring (44), a lower bearing end cover (45), a shaft elastic retaining ring (47), a flat key (48), a stirring blade (51), and a guide ring die (52). The feed hopper (18) and the upper end cover (17) are fixed by screws, and the upper end cover (17) and the upper end of the box body (12) are fixed by hexagonal bolts (41). The lower end of the box body (12) is connected to the lower flange plate (7) by countersunk bolts (38). The lower flange plate (7 ) is connected to the lower base (5) by a square head bolt (37); the lower base (5) is provided with an opening on the side, and the opening is connected to the outlet plate (27) by a hexagonal head bolt (40); the upper flange (14) is sleeved on the main shaft (6); a deep groove ball bearing (13) is provided at the connection; the upper end cover (15) of the deep groove ball bearing (13) is connected to the upper bearing end cover (15); the upper bearing end cover (15) is fixed to the upper flange (14) by a hexagonal head bolt (50) The lower flange (7) is sleeved on the main shaft (6), and a deep groove ball bearing (8) is provided at the connection. The lower part of the deep groove ball bearing (8) is connected to the lower bearing end cover (45), and the lower bearing end cover (45) is fixed to the lower flange (7) by a hexagonal bolt (46). The top of the main shaft (6) is connected to the stirring blade (51) by a stud. The cutter (19) is a curved blade with a 90° bend. A ring is provided at the upper end of the blade.The circular ring is nested and fixed on the main shaft (6). The upper end of the circular ring is provided with an axial elastic retaining ring (47) to axially fix the cutter (19). The stirring blade (51) and the cutter (19) rotate synchronously with the main shaft (6). The cam (9) is circumferentially fixed on the main shaft (6) through a key connection. The cam (9) is between the upper flange (14) and the lower flange (7). The cam (9) is in close contact with the upper and lower flanges through two sleeves (10) to axially fix the cam (9). The outer surface of the cam (9) is provided with three remote points. The outer surface of the cam (9) is in contact with the base part of the punch (42) respectively. The root of each push rod of the punch (9) is provided with a spring (43). The two ends of the spring (43) are in contact with the base part of the punch (42) and the inner side of the guide ring die (52) respectively. The cam (9) rotates with the main shaft (6), and the cam (9) and the punch (42) perform linear reciprocating motion. The push rod portion of the punch (42) is inserted into the hole of the guide ring die (52). The guide ring die (52) is wrapped around the outside of the base of the punch (42). The guide ring die (52) is fixed between the upper flange (14) and the lower flange (7) by bolts. The ring die (11) is sleeved on the outside of the guide ring die (52). The ring die (11) is fixed between the upper flange (14) and the lower flange (7) by bolts. The lower base (5) is nested on the main shaft (6). The receiving plate at the upper end of the lower base (5) is an inclined disc-shaped structure. The outer periphery of the receiving plate is provided with an outlet plate (27). The lower end of the lower flange (7) is connected to the upper end of the lower base (5) by a square head bolt (37).

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several changes and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A plunger-type biomass ring die pellet fuel forming device, mainly including a pellet forming system, a lubrication system, a reducer, a motor, a connecting flange, and a support plate, characterized in that: The particle forming system is mainly composed of a feed hopper, an upper end cover, a box body, an anti-blocking rotating blade, a cutter, a punch, a main shaft, a cam, a guide ring die, a ring die, a storage plate, an upper flange, and a lower flange; the lubrication system is mainly composed of an oil inlet pipe, an oil outlet pipe, an oil pump, and an oil tank.

2. A plunger-type biomass ring mold pellet fuel forming device as claimed in claim 1, characterized in that: The particle forming system is vertically mounted on the reducer, the reducer and the motor are horizontally connected through a connecting flange and fixed on a support plate, and the oil inlet and outlet pipelines of the lubrication system are respectively connected to the oil inlet and outlet of the guide ring die.

3. A plunger-type biomass ring mold pellet fuel forming device as claimed in claim 1, characterized in that: The feed hopper is fixed to the upper end cover by screws, and the upper end cover is fixed to the box body by screws. The top of the main shaft is equipped with an anti-blocking rotating blade, which rotates synchronously with the main shaft. The cutter is a blade with an angle of 90°. A ring is provided on the upper end of the blade. The ring is nested and fixed on the main shaft and rotates synchronously with the main shaft. The cam is connected to the main shaft through a key. When the cam rotates with the main shaft, since a spring is provided at the root of each push rod of the punch, the cam and the punch make a linear reciprocating motion. The push rod part of the punch is installed on the guide ring die, the guide ring die is sleeved on the outside of the cam, and the ring die is sleeved on the outside of the guide ring die. The guide ring die and the ring die are all fixed to the upper flange and the lower flange by bolts. The receiving tray is an inclined disc-shaped structure, and a discharge port is provided on the periphery of the receiving tray. The lower end of the lower flange is connected to the upper end of the receiving tray and is fixed by bolts.

4. A plunger-type biomass ring mold pellet fuel forming device as claimed in claim 1, characterized in that: The guide ring die is a closed structure with a hollow interior, and is connected to the outside world only through an oil inlet and an oil outlet. The oil inlet is located at the lower part of the guide ring die, and the oil outlet is located at the upper part of the guide ring die.

5. A plunger-type biomass ring mold pellet fuel forming device as claimed in claim 1, characterized in that: The structure of the punch consists of a base and a push rod. The punch serves as a follower of the cam. As the cam rotates, the punch makes a linear reciprocating motion. The punch base is designed to be a semi-cylinder, and its base forms a line contact with the far point of the cam. The device has a total of 24 punches, each of which has 10 push rods on its base. A total of 240 push rods are matched one by one with the 240 holes of the guide ring die and the ring die, respectively. The front end of the push rod is in direct contact with the biomass raw material in the hole of the ring die for extrusion. During the compression process, in order to enable the punch to automatically reset after movement, a spring is added to the root of each push rod. Under the action of the spring, the punch base can always keep in contact with the cam, thereby ensuring the continuity of work.

6. A plunger-type biomass ring mold pellet fuel forming device as claimed in claim 2, characterized in that: The lower end of the storage tray in the particle forming system is connected to the upper end of the reducer by bolts, the lower end of the main shaft is connected to the output end of the reducer by keys, and the motor output shaft is connected to the input shaft of the reducer by a coupling.

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