Biomass fuel crushing and screening device

Abstract

The biomass fuel smashing and screening device comprises a screening box body, supporting legs and a screening assembly, and the screening assembly comprises a containing clamping frame, a supporting clamping shaft and a transmission shaft; the number of the supporting clamping shafts is four, and the four supporting clamping shafts are symmetrically arranged at the four corners of the containing clamping frame in a pairwise mode. The surfaces of the four supporting clamping shafts are slidably connected with the interior of the containing clamping frame. The ends, away from the containing clamping frame, of the four supporting clamping shafts are fixedly connected with the inner wall of the screening box. By arranging the material screening assembly, a screening hopper in a containing clamping frame can be driven to slide, biomass fuel in the screening hopper continuously shakes, then the blocking condition is avoided, in addition, after a transmission shaft rotates, a vibration cam is driven to rotate, the screening hopper is flapped, the screening hopper is matched with the screening hopper to slide in a reciprocating mode along with the containing clamping frame, the flapping face can be increased, and the screening efficiency is improved. And the shaking of the biomass fuel in the screening hopper is further accelerated, so that the biomass fuel can be screened more quickly, and the screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass fuel pulverization, in particular to a biomass fuel pulverization and screening device. Background Art

[0002] Biomass fuel has the advantages of low carbon, environmental protection, and renewability, as well as high combustion efficiency and low pollution emissions. At the same time, biomass fuel processing is a complex process but full of opportunities. By continuously optimizing processing technology and improving fuel performance, biomass fuel is expected to become one of the mainstream renewable energy sources in the future. Biomass fuel crushing is one of the key links in the biomass fuel processing process, which directly affects the efficiency and effectiveness of subsequent molding, combustion and other steps.

[0003] A Chinese patent with publication number CN217221850U discloses a grinding device for biomass fuel production, including a bracket, a grinding chamber installed on the top of the bracket, a grinding assembly installed inside the grinding chamber, a screening assembly installed on the bracket, the screening assembly is located at the bottom of the grinding chamber, a discharging assembly is installed at the bottom of the bracket, a dredging assembly is installed on the discharging assembly, a feed hopper is also installed on the grinding chamber, and a cutting assembly is installed on the feed hopper. The utility model can timely dredge a blocked discharging pipe to ensure the normal production of biomass fuel, greatly improving the production efficiency. The device can also screen the crushed biomass fuel to ensure that the biomass fuel is crushed more thoroughly, and can reduce the possibility of the biomass fuel blocking the discharging pipe when discharged, ensuring the production quality of the biomass fuel.

[0004] As mentioned above, the patent provides a grinding device for biomass fuel production. Although it can screen the biomass fuel after crushing, some biomass fuels with larger particles may exist during screening, causing blockage and making it impossible to screen all of these biomass fuels. The overall screening efficiency needs to be improved. Utility Model Content

[0005] The utility model provides a biomass fuel crushing and screening device to solve the problems raised in the background technology.

[0006] In order to solve the above problems, the utility model provides a biomass fuel crushing and screening device, comprising a screening box, a support leg and a screening assembly, wherein the screening assembly comprises a placement card frame, a support card shaft and a transmission shaft; the number of the support card shafts is set to four, and the four support card shafts are symmetrically arranged in pairs at the four corners of the placement card frame; the surfaces of the four support card shafts are all slidably connected to the inside of the placement card frame; the ends of the four support card shafts away from the placement card frame are fixedly connected to the inner wall of the screening box; the surfaces of two of the support card shafts are sleeved with compression springs; the two ends of the compression springs are respectively fixedly connected to the surface of the placement card block and the inner wall of the screening box; the surfaces of the other two support card shafts are sleeved with buffer springs; the two ends of the buffer springs are fixedly connected with elastic snap rings; the inner side of the elastic snap ring is slidably connected to the surface of the support card shaft; one side of the screening box is fixedly connected with a placement cylinder; the interior of the placement cylinder is fixedly connected with a hydraulic cylinder; one end of the hydraulic cylinder is fixedly connected with an elastic limiting ball; the inner side of the placement card frame is clamped with a screening bucket; the surface of the transmission shaft is fixedly connected with a vibration cam.

[0007] Preferably: the transmission shaft is arranged at the bottom of the screening bucket; both ends of the transmission shaft are rotatably connected to the inner wall of the screening box; and the bottom of the inner wall of the screening box is arranged to be inclined.

[0008] Preferably: a motor frame is fixedly connected to one side of the screening box; a motor is fixedly connected to the surface of the motor frame; and an output shaft of the motor is fixedly connected to one end of a transmission shaft via a coupling.

[0009] Preferably: the top of the supporting leg is fixedly connected to the bottom of the screening box; a material drop opening is provided at the bottom of the screening box; a material blocking card is slidably connected to the inside of the material drop opening; an electric telescopic rod is fixedly connected to the inside of the material blocking card; one end of the electric telescopic rod is fixedly connected to the inner wall of the material drop opening; a limiting card rod is fixedly connected to the inner wall of the material drop opening; the surface of the limiting card rod is slidably connected to the surface of the material blocking card.

[0010] Preferably: the top of the screening bucket is threadedly connected with a connecting bolt; the surface of the screening bucket is fixedly connected to the top of the card frame through the connecting bolt; and the top of the screening bucket is clamped with a protective cover plate.

[0011] The beneficial effects of adopting the above technical solution are:

[0012] By setting up a screening assembly, when screening, the hydraulic cylinder first works to drive the elastic limit ball to rest against the surface of the placement card frame, and makes it move sideways on the surface of the supporting card shaft as much as possible, so that the compression spring is in a maximum compression state, and then the screening bucket is placed in the placement card frame. When screening, the hydraulic cylinder works instantly to drive the elastic limit ball away from the placement card frame. The compression spring needs to return to its original state after compression, thereby generating a thrust on the placement card frame, pushing the placement card frame open, and the placement card frame will contact with the elastic clamp ring after being pushed open, thereby pushing the buffer spring to slide on the supporting card shaft. When it slides to a certain distance After the degree, the elastic force generated by the compression of the buffer spring is greater than the elastic force of the compression spring, and it begins to push the placement card frame in the opposite direction, so that the placement card frame slides back and forth continuously on the supporting card shaft, thereby driving the screening bucket inside the placement card frame to slide, causing the biomass fuel inside the screening bucket to continuously shake, thereby avoiding blockage. In addition, after the transmission shaft rotates, it drives the vibration cam to rotate, and slaps the screening bucket. In conjunction with the reciprocating sliding of the screening bucket with the placement card frame, the slapping surface can be increased, further accelerating the shaking of the biomass fuel inside the screening bucket, allowing it to screen more quickly, thereby improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0014] Figure 2 This is a schematic diagram of the first cross-sectional structure of the utility model.

[0015] Figure 3 This is a schematic diagram of the second cross-sectional structure of the utility model.

[0016] Figure 4 It is an exploded view of a part of the structure of the utility model.

[0017] Among them: 1. Screening box; 2. Support legs; 3. Placement card frame; 4. Support card shaft; 5. Transmission shaft; 6. Compression spring; 7. Buffer spring; 8. Elastic clamp ring; 9. Placement cylinder; 10. Hydraulic cylinder; 11. Elastic limiting ball; 12. Screening bucket; 13. Vibrating cam; 14. Motor frame; 15. Motor; 16. Dropping port; 17. Material blocking card plate; 18. Electric telescopic rod; 19. Limiting card rod; 20. Connecting bolts; 21. Protective cover. DETAILED DESCRIPTION

[0018] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0019] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, a movable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1 - Figure 4 As shown, in this embodiment, a biomass fuel crushing and screening device includes a screening box 1, support legs 2 and a screening assembly, wherein the screening assembly includes a placement card frame 3, a support card shaft 4 and a transmission shaft 5; the number of the support card shafts 4 is set to four, and the four support card shafts 4 are symmetrically arranged in pairs at the four corners of the placement card frame 3; the surfaces of the four support card shafts 4 are all slidably connected to the inside of the placement card frame 3; the ends of the four support card shafts 4 away from the placement card frame 3 are fixedly connected to the inner wall of the screening box 1; wherein the surfaces of two of the support card shafts 4 are sleeved with compression springs 6; the compression springs 6, the two ends are respectively fixedly connected to the surface of the placement block and the inner wall of the screening box 1; the surfaces of the other two support clamp shafts 4 are sleeved with buffer springs 7; the two ends of the buffer springs 7 are fixedly connected with elastic clamp rings 8; the inner side of the elastic clamp ring 8 is slidably connected to the surface of the support clamp shaft 4; a placement cylinder 9 is fixedly connected to one side of the screening box 1; a hydraulic cylinder 10 is fixedly connected to the inside of the placement cylinder 9; an elastic limiting ball 11 is fixedly connected to one end of the hydraulic cylinder 10; a screening bucket 12 is clamped on the inner side of the placement frame 3; a vibration cam 13 is fixedly connected to the surface of the transmission shaft 5.

[0022] Through the above technical scheme, the screening material assembly is arranged in the screening box 1, and four supporting card shafts 4 are arranged and fixed on the inner wall of the screening box 1 to support the placement card frame 3, and the placement card frame 3 slides on the surface of the supporting card shaft 4, wherein the surfaces of two supporting card shafts 4 are sleeved with buffer springs 7, and the two ends of the buffer springs 7 are respectively fixed to the inner wall of the screening box 1 and the surface of the placement card frame 3, and the surfaces of the other two supporting card shafts 4 are sleeved with buffer springs 7, and the two ends of the buffer springs 7 are fixed with elastic snap rings 8, and the elastic snap rings 8 buffer the placement card frame 3 to avoid violent collision of the placement card frame 3, and the placement cylinder 9 is fixed to one side of the screening box 1 for placing the hydraulic cylinder 10, and the elastic limiting ball 11 is fixed at one end of the hydraulic cylinder 10, and the vibration cam 13 is fixed on the surface of the transmission shaft 5, and the vibration cam 13 is driven to rotate by the rotation of the transmission shaft 5. When screening materials, the hydraulic cylinder 10 first drives the elastic limiting ball 11 to press against the surface of the placement card frame 3, and makes it move sideways on the surface of the supporting card shaft 4 as much as possible, so that the compression spring 6 is in the maximum compression state, and then The screening bucket 12 is placed in the placement card frame 3. When screening, the hydraulic cylinder 10 works instantly to drive the elastic limiting ball 11 away from the placement card frame 3. The compression spring 6 needs to be restored to its original state after being compressed, thereby generating a thrust on the placement card frame 3 to push the placement card frame 3 open. After the placement card frame 3 is pushed open, it will contact the elastic clamping ring 8, thereby pushing the buffer spring 7 to slide on the supporting card shaft 4. When it slides to a certain extent, the elastic force generated by the compression of the buffer spring 7 is greater than the elastic force of the compression spring 6, and starts to push the placement card frame 3 in the opposite direction, so that The placement card frame 3 continuously slides back and forth on the supporting card shaft 4, thereby driving the screening bucket 12 inside the placement card frame 3 to slide, causing the biomass fuel inside the screening bucket 12 to continuously shake, thereby avoiding blockage. In addition, after the transmission shaft 5 rotates, it drives the vibration cam 13 to rotate, and beats the screening bucket 12. In addition, the screening bucket 12 slides back and forth with the placement card frame 3, which can increase the beating surface and further accelerate the shaking of the biomass fuel inside the screening bucket 12, so that it can be screened more quickly, thereby improving the screening efficiency.

[0023] like Figure 2 and Figure 3 As shown, the transmission shaft 5 is arranged at the bottom of the screening bucket 12; the two ends of the transmission shaft 5 are rotatably connected to the inner wall of the screening box 1; the bottom of the inner wall of the screening box 1 is arranged to be inclined; a motor frame 14 is fixedly connected to one side of the screening box 1; a motor 15 is fixedly connected to the surface of the motor frame 14; the output shaft of the motor 15 is fixedly connected to one end of the transmission shaft 5 through a coupling.

[0024] Through the above technical scheme, the transmission shaft 5 is arranged at the bottom of the screening bucket 12, so that the vibration cam 13 slaps the bottom of the screening bucket 12 after rotating, and the bottom of the inner wall of the screening box 1 is arranged to be inclined, which is convenient for guiding the screened biomass fuel so that it can slide downward along the inclined inner wall of the screening box 1. The motor frame 14 is fixed to one side of the screening box 1 for supporting the motor 15. When the motor 15 is working, the transmission shaft 5 is driven by the output shaft to start rotating, so as to provide energy for the vibration cam 13 to slap the screening bucket 12.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, the top of the supporting leg 2 is fixedly connected to the bottom of the screening box 1; a material drop opening 16 is opened at the bottom of the screening box 1; a material blocking card plate 17 is slidably connected inside the material drop opening 16; an electric telescopic rod 18 is fixedly connected inside the material blocking card plate 17; one end of the electric telescopic rod 18 is fixedly connected to the inner wall of the material drop opening 16; a limiting card rod 19 is fixedly connected to the inner wall of the material drop opening 16; the surface of the limiting card rod 19 is slidably connected to the surface of the material blocking card plate 17; the top of the screening bucket 12 is threadedly connected with a connecting bolt 20; the surface of the screening bucket 12 is fixedly connected to the top of the placement card frame 3 through the connecting bolt 20; the top of the screening bucket 12 is clamped with a protective cover plate 21.

[0026] Through the above technical scheme, the supporting legs 2 support the screening box 1, the material drop port 16 is opened at the bottom of the screening box 1, and a card slot is opened inside the material drop port 16, the material blocking card plate 17 can slide inside the card slot, and the electric telescopic rod 18 and the limiting card rod 19 are both arranged in the card slot. When discharging is required, the electric telescopic rod 18 drives the material blocking card plate 17 to slide away from the material drop port 16, and the biomass fuel can fall out from the material drop port 16. The limiting card rod 19 limits the material blocking card plate 17. In addition, the connecting bolts 20 fix the screening bucket 12 to the top of the placement card frame 3, and the protective cover plate 21 protects the screening bucket 12. When the screening material is placed, the biomass fuel falls out from the screening bucket 12.

[0027] Finally, it should be noted that the above implementation cases are only used to illustrate the present invention, rather than to limit the technical solutions described in the present invention; therefore, although this specification has described the present invention in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention; the technology not described in detail in the present invention is implemented with the existing technology.

Claims

1. A biomass fuel crushing and screening device, comprising a screening box (1), a support leg (2) and a screening assembly, characterized in that: The screening material assembly comprises a placement card frame (3), a support card shaft (4) and a transmission shaft (5); the number of the support card shafts (4) is set to four, and the four support card shafts (4) are symmetrically arranged in pairs at the four corners of the placement card frame (3); the surfaces of the four support card shafts (4) are all slidably connected to the inside of the placement card frame (3); the ends of the four support card shafts (4) away from the placement card frame (3) are fixedly connected to the inner wall of the screening box (1); the surfaces of two of the support card shafts (4) are sleeved with compression springs (6); the two ends of the compression springs (6) are respectively connected to the surface of the placement card block and the inner wall of the screening box (1). The screen housing (1) is fixedly connected to a wall; the surfaces of the other two support clamping shafts (4) are sleeved with buffer springs (7); both ends of the buffer springs (7) are fixedly connected to elastic clamping rings (8); the inner side of the elastic clamping ring (8) is slidably connected to the surface of the support clamping shaft (4); one side of the screening box (1) is fixedly connected to a placement cylinder (9); the interior of the placement cylinder (9) is fixedly connected to a hydraulic cylinder (10); one end of the hydraulic cylinder (10) is fixedly connected to an elastic limiting ball (11); the inner side of the placement clamping frame (3) is clamped with a screening bucket (12); and the surface of the transmission shaft (5) is fixedly connected to a vibration cam (13).

2. A biomass fuel crushing and screening device according to claim 1, characterized in that: The transmission shaft (5) is arranged at the bottom of the screening bucket (12); the two ends of the transmission shaft (5) are rotatably connected to the inner wall of the screening box (1); and the bottom of the inner wall of the screening box (1) is arranged to be inclined.

3. The biomass fuel crushing and screening device according to claim 1, characterized in that: A motor frame (14) is fixedly connected to one side of the screening box (1); a motor (15) is fixedly connected to the surface of the motor frame (14); and an output shaft of the motor (15) is fixedly connected to one end of a transmission shaft (5) via a coupling.

4. The biomass fuel crushing and screening device according to claim 1, characterized in that: The top of the support leg (2) is fixedly connected to the bottom of the screening box (1); a material drop opening (16) is provided at the bottom of the screening box (1); a material blocking clamp (17) is slidably connected to the inside of the material drop opening (16); an electric telescopic rod (18) is fixedly connected to the inside of the material blocking clamp (17); one end of the electric telescopic rod (18) is fixedly connected to the inner wall of the material drop opening (16); a limiting clamp rod (19) is fixedly connected to the inner wall of the material drop opening (16); and the surface of the limiting clamp rod (19) is slidably connected to the surface of the material blocking clamp (17).

5. The biomass fuel crushing and screening device according to claim 1, characterized in that: The top of the screening bucket (12) is threadedly connected with a connecting bolt (20); the surface of the screening bucket (12) is fixedly connected to the top of the placement card frame (3) through the connecting bolt (20); and the top of the screening bucket (12) is clamped with a protective cover plate (21).

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