CN114392823A

CN114392823A - Cone spiral circulating grinding and crushing system

Info

Publication number: CN114392823A
Application number: CN202111464242.2A
Authority: CN
Inventors: 陈永平
Original assignee: Hunan Huifeng Environmental Protection Equipment Technology Co ltd
Current assignee: Hunan Huifeng Environmental Protection Equipment Technology Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-04-26
Anticipated expiration: 2041-12-02
Also published as: CN114392823B

Abstract

The invention provides a conical spiral circulating grinding and crushing system which comprises a feeding conveyor, a material returning spiral conveyor and a secondary crushing conveyor, wherein the output end of the feeding conveyor obliquely extends to the upper part of a feeding hopper of a first spiral crushing unit, a first screening unit is arranged below the outlet of the first spiral crushing unit, a corresponding powder collecting frame is arranged below the fine material outlet of the first screening unit, one end of the secondary crushing conveyor is positioned below the coarse material outlet of the first screening unit, the other end of the secondary crushing conveyor obliquely extends to the upper part of a feeding hopper of a second spiral crushing unit, and a second screening unit is arranged below the outlet of the second spiral crushing unit. Rational in infrastructure, excellent in use effect after this scheme of adoption.

Description

Cone spiral circulating grinding and crushing system

Technical Field

The invention relates to the technical field of crushing equipment, in particular to a conical spiral circulating grinding crushing system.

Background

The existing crushing equipment mainly crushes solid raw materials in a mode of rolling, shearing and impacting. The rolling is mainly used for coarse crushing and medium crushing, and is suitable for crushing hard materials and large lump materials; the shearing is mainly used for crushing or crushing, and is suitable for crushing of tough or fibrous materials; the impact is mainly used for crushing and depolymerizing and is suitable for crushing fragile materials; however, when raw materials such as bamboo powder, wood powder and medicinal materials are crushed, the raw materials have certain toughness and need to be controlled in various particle sizes, so that the requirements on the size and uniformity of particles are high, and the equipment cannot meet the use requirements when being used singly.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a conical spiral circulating grinding and crushing system.

In order to achieve the purpose, the technical scheme provided by the invention is as follows: a conical spiral circulating grinding and crushing system, which comprises a feeding conveyer and a return spiral conveyer, the regrinding conveyer, the slope of feeding conveyer output extends to first spiral crushing unit feeder hopper top, first screening unit is installed to first spiral crushing unit export below, first screening unit fine material export below is equipped with corresponding collection powder frame, regrinding conveyer wherein one end is located first screening unit coarse fodder export below, the slope of regrinding conveyer other end extends to second spiral crushing unit feeder hopper top, second screening unit is installed to second spiral crushing unit export below, second screening unit fine material export below is equipped with corresponding collection powder frame, material returning screw conveyer wherein one end is located second screening unit coarse fodder export below, material returning screw conveyer other end slope upwards extends to first spiral crushing unit feeder hopper top.

The first spiral crushing unit and the second spiral crushing unit are identical in structure and comprise a machine shell, a spiral feeding shaft and a machine frame, wherein a speed reducer is installed at one end of the top of the machine frame, the machine shell is installed at the other end of the machine frame, the spiral feeding shaft is horizontally installed in the machine shell, one end of the spiral feeding shaft shrinks to form a transmission shaft, the transmission shaft penetrates through the machine shell to be connected with the output end of the speed reducer, a feeding hopper is installed on the machine shell above the spiral feeding shaft and located below the outlet of a corresponding conveyor, a fine grinding assembly is connected to the end portion of the other end of the spiral feeding shaft, a coarse grinding area is formed between the spiral feeding shaft and the inner cavity wall of the machine shell, a grinding head cover is arranged on the outer side of the fine grinding assembly, an adjusting assembly is arranged on the grinding head cover, and the adjusting assembly is connected with the fine grinding assembly.

The fine grinding assembly comprises an inner grinding head and an outer grinding head, wherein the inner grinding head is conical, the larger end of the inner grinding head is connected with the spiral feeding shaft, the outer grinding head is sleeved outside the inner grinding head, the outer grinding head is conical, and the conical direction is consistent with the conical direction of the inner grinding head; the conicity of the inner cavity wall of the outer grinding head is larger than that of the outer peripheral surface of the inner grinding head; one end of the grinding head cover is connected with the shell, and the other end of the grinding head cover is connected with the adjusting component; the outer grinding head is sleeved in the grinding head cover, a fine grinding area is reserved between the surface of the sleeved inner grinding head and the inner cavity wall of the outer grinding head, grinding teeth which are matched with each other are arranged on the surface of the inner grinding head and the inner cavity wall of the outer grinding head, the edge of the larger end of the outer grinding head extends outwards to form a guide ring, the outer ring surface of the guide ring is in contact with the inner cavity wall of the grinding head cover, the smaller end of the outer grinding head extends to form a fine grinding adjusting cylinder, and the fine grinding adjusting cylinder is connected with an adjusting component.

The first screening unit and the second screening unit are identical in structure and respectively comprise a screening frame, a primary screen is obliquely arranged at the top of the screening frame, vertical upward lateral baffles are fixed on two sides of the primary screen, a support plate is fixed on the screening frame below two ends of the primary screen, a spring buffer is arranged on the support plate, the top of the spring buffer is connected with the bottom of the primary screen, a secondary screen is fixed below the primary screen, and a powder guide plate is arranged on the screening frame below the secondary screen; connecting rods are fixed at two ends of the secondary screen, and the top of each connecting rod is upwards connected with the bottom of the primary screen; and transverse supporting rods are fixed on the outer sides of the connecting rods, one transverse supporting rod is connected with the top of the spring buffer piece, a vibrator is arranged at the bottom of the other transverse supporting rod, and the bottom of the vibrator is connected with the corresponding spring buffer piece.

After the scheme is adopted, the feeding conveyor conveys external raw materials (bamboo chips, bamboo blocks or coarse crushed raw materials) into the first spiral crushing unit, crushing by a first spiral crushing unit, screening by a first screening unit after crushing, collecting qualified powder by a powder collecting frame (barrel/bag), falling screened coarse materials (residual materials) into a secondary crushing conveyor, the powder is sent to a second spiral crushing unit for crushing through a secondary crushing conveyor, the powder crushed by the second spiral crushing unit falls into a second screening unit, screening by a second screening unit, collecting qualified powder by a corresponding powder collecting frame (barrel/bag), and conveying screened coarse materials (residual materials) to a material returning spiral conveyor and conveying the coarse materials (residual materials) to a first spiral crushing unit for circular crushing by the material returning spiral conveyor; first screening unit, second screening unit can set up according to powder mesh when the screening to be used for collecting the powder of different meshes, rational in infrastructure, excellent in use effect after this scheme of adoption.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of a first spiral pulverizing unit of the present invention.

FIG. 3 is a schematic view of a sharpening assembly of the present invention.

Figure 4 is a schematic view of a first screening unit of the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings, in which preferred embodiments of the invention are: referring to the attached drawings 1 to 4, the conical spiral circulating grinding and crushing system described in the embodiment comprises a feeding conveyor 1, a return spiral conveyor 5 and a secondary crushing conveyor 6, wherein the output end of the feeding conveyor 1 obliquely extends to the upper part of a feeding hopper of a first spiral crushing unit 2, a first screening unit 3 is arranged below the outlet of the first spiral crushing unit 2, a corresponding powder collecting frame is arranged below the fine material outlet of the first screening unit 3, one end of the secondary crushing conveyor 6 is arranged below the coarse material outlet of the first screening unit 3, the other end of the secondary crushing conveyor 6 obliquely extends to the upper part of a feeding hopper of a second spiral crushing unit 7, a second screening unit 4 is arranged below the outlet of the second spiral crushing unit 7, a corresponding powder collecting frame is arranged below the fine material outlet of the second screening unit 4, one end of the return spiral conveyor 5 is arranged below the coarse material outlet of the second screening unit 4, the other end of the material returning screw conveyor 5 extends upwards to the upper part of the feed hopper of the first spiral crushing unit 2 in an inclined way.

The first spiral crushing unit 2 and the second spiral crushing unit 7 are identical in structure and comprise a machine shell 101, a spiral feeding shaft 102 and a machine frame 104, wherein a speed reducer 105 is installed at one end of the top of the machine frame 104, the machine shell 101 is installed at the other end of the machine frame 104, the spiral feeding shaft 102 is horizontally installed in the machine shell 101, one end of the spiral feeding shaft 102 contracts to form a transmission shaft, the transmission shaft penetrates through the machine shell 101 to be connected with the output end of the speed reducer 105, a feed hopper is installed on the machine shell 101 above the spiral feeding shaft 102 and located below the outlet of a corresponding conveyor, a fine grinding assembly is connected to the end portion of the other end of the spiral feeding shaft 102, a coarse grinding area is formed between the spiral feeding shaft 102 and the inner cavity wall of the machine shell 101, a grinding head cover 106 is arranged on the outer side of the fine grinding assembly, and an adjusting assembly is arranged on the grinding head cover 106 and connected with the fine grinding assembly.

The fine grinding component comprises an inner grinding head 103 and an outer grinding head 107, wherein the inner grinding head 103 is conical, the larger end of the inner grinding head is connected with the spiral feeding shaft 102, the outer grinding head 107 is sleeved outside the inner grinding head 103, the outer grinding head 107 is conical, and the conical direction is consistent with the conical direction of the inner grinding head 103; the conicity of the inner cavity wall of the outer grinding head 107 is larger than that of the peripheral surface of the inner grinding head 103; one end of the grinding head cover 106 is connected with the shell 101, and the other end is connected with the adjusting component; the outer grinding head 107 is sleeved in the grinding head cover 106, a fine grinding area is reserved between the surface of the sleeved inner grinding head 103 and the inner cavity wall of the outer grinding head 107, grinding teeth which are matched with each other are arranged on the surface of the inner grinding head 103 and the inner cavity wall of the outer grinding head 107, the edge of the larger end of the outer grinding head 107 is expanded outwards to form a guide ring 108, the outer annular surface of the guide ring 108 is contacted with the inner cavity wall of the grinding head cover 106, the smaller end of the outer grinding head 107 is extended to form a fine grinding adjusting cylinder 109, and the fine grinding adjusting cylinder 109 is connected with an adjusting component.

The first screening unit 3 and the second screening unit 4 have the same structure and respectively comprise a screening frame 201, a primary screen 202 is obliquely arranged at the top of the screening frame 201, vertical upward lateral baffles 203 are fixed on two sides of the primary screen 202, a supporting plate 204 is fixed on the screening frame 201 below two ends of the primary screen 202, a spring buffer 205 is arranged on the supporting plate 204, the top of the spring buffer 205 is connected with the bottom of the primary screen 202, a secondary screen 207 is fixed below the primary screen 202, and a powder guide-out plate 208 is arranged on the screening frame 201 below the secondary screen 207; connecting rods 209 are fixed at two ends of the secondary screen 207, and the tops of the connecting rods 209 are upwards connected with the bottoms of the primary screens 202; and transverse supporting rods 210 are fixed on the outer side of the connecting rod 209, one transverse supporting rod 210 is connected with the top of the spring buffer 205, the bottom of the other transverse supporting rod 210 is provided with a vibrator 206, and the bottom of the vibrator 206 is connected with the corresponding spring buffer 205.

The adjusting assembly comprises a fine grinding area adjusting ring 110 and a granularity adjusting ring 111, wherein an adjusting ring embedding groove is formed in the end part of the grinding head cover 106 in a concave mode, a fine grinding area embedding ring 113 is arranged on the ring surface of one side of the fine grinding area adjusting ring 110, the fine grinding area embedding ring 113 is sleeved with the adjusting ring embedding groove, a shielding ring 114 is arranged on the other side of the fine grinding area adjusting ring 110, an adjusting cylinder internal thread 115 is arranged on the ring surface of the fine grinding area adjusting ring 110, an adjusting cylinder external thread is arranged on the outer periphery of the middle part of the fine grinding adjusting cylinder 109, and the adjusting cylinder internal thread 115 is meshed with the adjusting cylinder external thread; an outer ring caulking groove 116 is concavely formed in the peripheral surface of a fine grinding adjusting cylinder 109 far away from an outer grinding head 107, a limiting ring 117 is arranged on one side of a granularity adjusting cylinder 111, an outer ring caulking rib 118 is arranged on the inner ring surface of the limiting ring 117, the outer ring caulking rib 118 is movably embedded in the outer ring caulking groove 116, a granularity adjusting cylinder 119 is movably sleeved in the fine grinding adjusting cylinder 109, one end of the granularity adjusting cylinder 119 is right opposite to the smaller end of the inner grinding head 103, a discharging area is formed between the end of the granularity adjusting cylinder 119 and the end of the inner grinding head 103, the other end of the granularity adjusting cylinder 119 extends out of the fine grinding adjusting cylinder 109 to form a discharging end, a granularity adjusting external thread is arranged on the peripheral surface of the discharging end, a granularity adjusting internal thread 120 is arranged on the inner ring surface of the granularity adjusting cylinder 111, and the granularity adjusting internal thread 120 is meshed with the granularity adjusting external thread; a material guide cylinder 121 is arranged on the outer side of the discharge end, a support 122 is arranged at the bottom of the material guide cylinder 121, and the support 122 is fixedly connected with the machine shell 101; the top of the outer ring surface of the guide ring 108 is provided with a raised guide block, the top of the inner cavity wall of the grinding head cover 106 is provided with a guide groove, and the guide block is positioned in the guide groove.

When the system is used, external raw materials such as bamboo chips, bamboo blocks or coarse crushed raw materials are conveyed into a first spiral crushing unit by a feeding conveyor and crushed by the first spiral crushing unit, then the crushed raw materials are screened by a first screening unit, qualified screened powder is collected by a powder collecting frame barrel/bag, the screened coarse material excess falls into a secondary crushing conveyor and is conveyed into a second spiral crushing unit by the secondary crushing conveyor to be crushed, the powder crushed by the second spiral crushing unit falls into a second screening unit and is screened by the second screening unit, the qualified powder is collected by a corresponding powder collecting frame barrel/bag after screening, the screened coarse material excess falls into a material returning spiral conveyor and is conveyed into the first spiral crushing unit by the material returning spiral conveyor to be circularly crushed; the first screening unit and the second screening unit can be arranged according to the mesh number of the powder materials during screening, so that the first screening unit and the second screening unit are used for collecting the powder materials with different mesh numbers;

the inner cavity walls of the shell of the first spiral crushing unit and the second spiral crushing unit and the outer peripheral surface of the spiral feeding shaft are provided with spiral shearing ribs, and the inner cavity wall of the outer grinding head and the surface of the inner grinding head are provided with grinding teeth similar to the surfaces of the grinding discs; when the grinding device is used, raw materials to be ground enter a coarse grinding area from a feed hopper, a speed reducer operates under the drive of a corresponding motor, a spiral feeding shaft is synchronously driven to operate through a transmission shaft, the raw materials are sheared and coarsely ground to form coarse grinding materials while the spiral feeding shaft feeds the materials, the coarse grinding materials enter a fine grinding area, an inner grinding head synchronously rotates while the spiral feeding shaft operates, the coarse grinding materials are ground again through the fine grinding area, and the taper of the inner cavity wall of the outer grinding head is larger than that of the outer peripheral surface of the inner grinding head; thereby forming a fine grinding area with a large feeding direction, a spiral feeding shaft direction and a small discharging direction, facilitating the speed reduction of the raw materials and simultaneously realizing extrusion; when the granularity superfine grinding of the fine grinding area needs to be adjusted, the fine grinding area adjusting ring is rotated, the adjusting cylinder external thread is driven through the adjusting cylinder internal thread, the fine grinding adjusting cylinder moves forwards to the direction of the screw feeding shaft, the fine grinding adjusting cylinder drives the outer grinding head forward guide block and the guide groove to match, so that the outer grinding head can only move back and forth and can not rotate, the space between the inner grinding head and the outer grinding head in the width of the fine grinding area is reduced, the raw material conveying speed in the fine grinding area is slower, the grinding is finer, the ground superfine material passes through the discharging area and is led out through the inner cavity of the granularity adjusting cylinder, when the superfine grinding needs to be carried out, the granularity adjusting ring is rotated, the granularity adjusting external thread moves through the granularity adjusting internal thread, so that the granularity adjusting cylinder moves forwards to the direction of the inner grinding head, the granularity adjusting cylinder narrows the distance between the end part of the inner grinding head and the end part of the granularity adjusting cylinder when the granularity adjusting cylinder moves forwards, thereby reducing the discharging speed and prolonging the retention time of the raw materials in the grinding area, thereby achieving the purpose of grinding different particle sizes.

When the screening unit is used, the vibrator vibrates, the primary screen synchronously drives the secondary screen to vibrate when vibrating, powder falls onto the primary screen, screening is carried out through the primary screen, the residual material of the primary screening falls onto a corresponding conveyor through the conveying end of the primary screen, fine material after the primary screen is screened falls onto the secondary screen, micro powder is screened out through the secondary screen, the residual material separated by the secondary screen is led out from a fine material guide plate, the powder is led out and collected uniformly from a powder guide plate, the spring buffer is purchased and directly installed for use, is used for buffering the vibration force at the bottom of the screen, the screening frame is prevented from vibrating, the primary screen and the secondary screen are connected to form synchronous vibration by adopting a connecting rod, the scheme can sort or collect powder with four granularities once, meanwhile, a plurality of conveyors are matched to form an effective circulating crushing system, and the automatic degree of the system is high, The use effect is good.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that the changes in the shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a awl spiral circulation grinding crushing system, it is including feeding conveyor (1), return material screw conveyer (5), regrinding conveyer (6), its characterized in that: the output end of the feeding conveyor (1) obliquely extends to the upper part of a feed hopper of the first spiral crushing unit (2), the outlet lower part of the first spiral crushing unit (2) is provided with a first screening unit (3), the fine material outlet lower part of the first screening unit (3) is provided with a corresponding powder collecting frame, one end of the secondary crushing conveyor (6) is positioned below the coarse material outlet of the first screening unit (3), the other end of the secondary crushing conveyor (6) obliquely extends to the upper part of a feed hopper of the second spiral crushing unit (7), the outlet lower part of the second spiral crushing unit (7) is provided with a second screening unit (4), the fine material outlet lower part of the second screening unit (4) is provided with a corresponding powder collecting frame, one end of the returning spiral conveyor (5) is positioned below the coarse material outlet of the second screening unit (4), and the other end of the returning spiral conveyor (5) obliquely extends upwards to the upper part of the feed hopper of the first spiral crushing unit (2).

2. The conical helical circulating grinding and pulverizing system of claim 1, wherein: the first spiral crushing unit (2) and the second spiral crushing unit (7) are identical in structure and respectively comprise a machine shell (101), a spiral feeding shaft (102) and a machine frame (104), wherein a speed reducer (105) is installed at one end of the top of the machine frame (104), the machine shell (101) is installed at the other end of the machine frame (104), the spiral feeding shaft (102) is horizontally installed in the machine shell (101), one end of the spiral feeding shaft (102) is contracted to form a transmission shaft, the transmission shaft penetrates through the machine shell (101) to be connected with the output end of the speed reducer (105), a feed hopper is installed on the machine shell (101) above the spiral feeding shaft (102) and is positioned below the outlet of the corresponding conveyor, a fine grinding assembly is connected to the end part of the other end of the spiral feeding shaft (102), a coarse grinding area is formed between the spiral feeding shaft (102) and the inner cavity wall of the machine shell (101), a grinding head cover (106) is arranged outside the fine grinding assembly, the grinding head cover (106) is provided with an adjusting component which is connected with the fine grinding component.

3. The conical helical circulating grinding and pulverizing system of claim 2, wherein: the fine grinding assembly comprises an inner grinding head (103) and an outer grinding head (107), wherein the inner grinding head (103) is conical, the larger end of the inner grinding head is connected with the spiral feeding shaft (102), the outer grinding head (107) is sleeved outside the inner grinding head (103), the outer grinding head (107) is conical, and the conical direction is consistent with that of the inner grinding head (103); the conicity of the inner cavity wall of the outer grinding head (107) is larger than that of the outer peripheral surface of the inner grinding head (103); one end of the grinding head cover (106) is connected with the shell (101), and the other end of the grinding head cover is connected with the adjusting component; the outer grinding head (107) is sleeved in the grinding head cover (106), a fine grinding area is reserved between the surface of the inner grinding head (103) after being sleeved and the inner cavity wall of the outer grinding head (107), grinding teeth which are matched with each other are arranged on the surface of the inner grinding head (103) and the inner cavity wall of the outer grinding head (107), the edge of the larger end of the outer grinding head (107) is outwards expanded to form a guide ring (108), the outer annular surface of the guide ring (108) is in contact with the inner cavity wall of the grinding head cover (106), the smaller end of the outer grinding head (107) is extended to form a fine grinding adjusting cylinder (109), and the fine grinding adjusting cylinder (109) is connected with an adjusting component.

4. The conical helical circulating grinding and pulverizing system of claim 1, wherein: the first screening unit (3) and the second screening unit (4) are identical in structure and respectively comprise a screening frame (201), a primary screen (202) is obliquely arranged at the top of the screening frame (201), vertical upward lateral baffles (203) are fixed on two sides of the primary screen (202), supporting plates (204) are fixed on the screening frame (201) below two ends of the primary screen (202), spring buffer parts (205) are arranged on the supporting plates (204), the tops of the spring buffer parts (205) are connected with the bottoms of the primary screen (202), a secondary screen (207) is fixed below the primary screen (202), and powder guide plates (208) are arranged on the screening frame (201) below the secondary screen (207); connecting rods (209) are fixed at two ends of the secondary screen (207), and the tops of the connecting rods (209) are upwards connected with the bottoms of the primary screens (202); and transverse supporting rods (210) are fixed on the outer side of the connecting rod (209), one transverse supporting rod (210) is connected with the top of the spring buffer (205), a vibrator (206) is installed at the bottom of the other transverse supporting rod (210), and the bottom of the vibrator (206) is connected with the corresponding spring buffer (205).