CN212017990U - Hammer mill - Google Patents
Hammer mill Download PDFInfo
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- CN212017990U CN212017990U CN202020539121.4U CN202020539121U CN212017990U CN 212017990 U CN212017990 U CN 212017990U CN 202020539121 U CN202020539121 U CN 202020539121U CN 212017990 U CN212017990 U CN 212017990U
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Abstract
The utility model relates to a hammer mill, which comprises a feeding mechanism, a crushing chamber, a transmission system and a discharging mechanism, wherein the feeding mechanism comprises a tangential feeding hopper, and a striker plate is arranged at the joint of the tangential feeding hopper and the crushing chamber; the crushing chamber is circular, a chopping plate, a rotor set, a sieve sheet, a pinion plate and a large toothed plate are arranged in the crushing chamber, the chopping plate is horizontally arranged in the crushing chamber, the sieve sheet is arranged below the rotor set, the rotor set comprises a rotor disc and a hammer sheet, the center of the rotor disc is arranged on a rotor shaft, the hammer sheet is fixed on the rotor disc through a hammer sheet pin shaft, the pinion plate is arranged on the inner wall of the crushing chamber on the lower side of the chopping plate, and the large toothed plate is arranged on the inner wall of the crushing chamber below the tangential feeding hopper; the transmission system comprises a rotor shaft, a small belt wheel and a material conveying fan; the discharging mechanism comprises a material collecting barrel and a material throwing port. The hammer mill that provides among the above-mentioned technical scheme, its simple structure can effectively solve the hammer that current hammer mill exists and easily wear and tear, the inhomogeneous and great problem of noise of material granularity.
Description
Technical Field
The utility model relates to a rubbing crusher technical field, concretely relates to hammer mill.
Background
The feed must be reasonably crushed to increase the total area of the particles per unit mass and increase the solution degree of the feed in the digestive juice of the animals, so that the digestion and absorption of the animals are facilitated. For feed, the reasonable crushing granularity is achieved, and besides the influence of the crusher, the feed also has great influence. The water content of the feed is the most important factor, and according to the introduction of related experiments, when the material is based on 14%, the water content is increased, and the yield is reduced as follows: the water content is increased by 1 percent, and the yield is reduced by 6 percent; the water content is increased by 2 percent, and the yield is reduced by 8 percent; the water content is increased by 3 percent, and the yield is reduced by 10 percent; the water content is increased by 4 percent, and the yield is reduced by 12.5 percent; the water content is increased by 5 percent, and the yield is reduced by 15 percent. In addition, when the water content is high, sieve pores are easy to block in the crushing chamber, the effective sieve particle area is reduced, the mobility of the feed is reduced, the yield is reduced, and meanwhile, the equipment is rusted and corroded. Therefore, it is generally required that the water content of the feed at the time of pulverization does not exceed 15%.
The feed grinder is a machine specially used for grinding feed, and has the following three forms: hammer sheet, hammer type and claw type. The hammer type feed grinder is the most widely used one in the feed processing industry, and mainly performs grinding, tearing and extruding. Hammer leaf formula feed grinder has advantages such as simple structure, area are little, strong adaptability, crushing efficient, convenient to use, but has hammer leaf easy wearing and tearing, material granularity inhomogeneous and the great problem of noise, consequently needs to design a new scheme urgently to the problem that prior art exists is solved in order to synthesize.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hammer mill, its simple structure, the hammer leaf that can effectively solve current hammer mill existence easily wears to wear and tear, the inhomogeneous and great problem of noise of material granularity.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a hammer mill comprises a feeding mechanism, a crushing chamber, a transmission system and a discharging mechanism, wherein the feeding mechanism comprises a tangential feeding hopper, the included angle between the tangential feeding hopper and the horizontal plane is 30 degrees, and a striker plate is further arranged at the joint of the tangential feeding hopper and the crushing chamber; the crushing chamber is circular, a chopping plate, a rotor set, screen pieces, a pinion plate and a pinion plate are arranged in the crushing chamber, the chopping plate is horizontally arranged in the crushing chamber and is positioned on the intersection line of the tangential feeding hopper and the crushing chamber, the screen pieces are arranged below the rotor set, each screen hole is formed in each screen piece, the included angle between each obliquely arranged screen hole and the horizontal plane is 60 degrees, the rotor set comprises a rotor disc and a hammer piece, the center of the rotor disc is arranged on a rotor shaft, the rotor discs are connected through a pin shaft sleeve and a pin shaft nut, the hammer piece is fixed on the rotor disc through a hammer piece pin shaft, the pinion plate is arranged on the inner wall of the crushing chamber on the lower side of the chopping plate, and the pinion plate is arranged on the inner wall of the crushing chamber below the tangential feeding hopper; the transmission system comprises a rotor shaft, a small belt wheel and a material conveying fan, wherein the small belt wheel and the material conveying fan are respectively arranged at two ends of the rotor shaft through rolling bearings; the discharging mechanism comprises a material collecting cylinder and a material throwing port, and the material throwing port is connected with a crushing chamber below the sieve sheet through a material conveying fan and the material collecting cylinder.
The further scheme is that the interception plate is a tooth-shaped interception plate, the insections of the tooth-shaped interception plate are arranged downwards, and one end, connected with the crushing chamber, of the tooth-shaped interception plate is arranged along with the small toothed plate.
The further scheme is that the hammer sheets are rectangular hammer sheets subjected to quenching and heating treatment, the quenching area is the areas at two ends and two sides of the position of the two pin shaft holes, and the rectangular hammer sheets are uniformly distributed along the width motion track direction of the crushing chamber.
Further, when the rotor set is in the radial direction, the distance from the bottom end of the hammer sheet to the inner surface of the sieve sheet is 6 mm.
In a further scheme, the diameter of each screen hole on each screen sheet is 3mm, the opening rate is 32.6%, and the wrap angle of each screen sheet is 180 degrees.
According to the hammer mill provided by the technical scheme, the shape, the structure and the like of the milling chamber are reasonably designed, and the tooth cutting plate is arranged in the circular milling chamber, so that the formation of a circulation layer is effectively damaged, and the milling efficiency of the feed is improved; the shape, material, thickness, number, group number, arrangement form and the like of the hammer sheets are reasonably designed, and the hammer sheets are quenched and heated, so that the wear resistance of the hammer sheets is effectively improved; the sieve sheet, the hammer sheet, the gap between the hammer sheet and the sieve plate and the like are reasonably designed, so that the uniformity of the granularity of the material is effectively improved; the transmission system, the rotor shaft and the like are reasonably designed, so that the machine is stable in transmission, and the noise is effectively reduced; the utility model discloses a hammer leaf formula feed grinder has characteristics such as the model is little, simple structure, area is little, the noise is little, long service life, is fit for rural individual family and breeds family and small-size plant and uses, mainly smashes cereal such as maize, chinese sorghum, soybean.
Drawings
FIG. 1 is a schematic structural diagram of a hammer mill of the present invention;
FIG. 2 is a schematic structural view of a hammer mill of the present invention;
fig. 3 is a schematic structural view of the hammer sheet of the present invention;
FIG. 4 is a schematic structural view of the sieve sheet of the present invention;
fig. 5 is a schematic structural view of the small belt wheel of the present invention;
fig. 6 is a schematic structural view of the rotor shaft of the present invention.
In the figure: 1. a tangential feeding hopper; 2. a striker plate; 3. a strike plate; 4. a pinion plate; 41. a big toothed plate; 5. a crushing chamber; 6. a hammer sheet; 61. a hammer sheet pin shaft; 62. a quenching zone; 7. a rotor shaft; 71. a rotor disk; 8. a discharge mechanism; 81. a material collecting barrel; 82. a material conveying fan; 83. a material throwing port; 9. screening sheets; 91. screening holes; 10. a rolling bearing; 11. a small belt wheel.
Detailed Description
In order to make the objects and advantages of the present invention more apparent, the present invention will be described in detail with reference to the following embodiments. It is to be understood that the following text is only intended to describe one or several particular embodiments of the invention, and does not strictly limit the scope of the claims specifically claimed.
The technical scheme of the utility model is as shown in figures 1-6, a hammer mill comprises a feeding mechanism, a crushing chamber 5, a transmission system and a discharging mechanism 8, wherein the feeding mechanism comprises a tangential feeding hopper 1, the included angle between the tangential feeding hopper 1 and the horizontal plane is 30 degrees, and a striker plate 2 is arranged at the joint of the tangential feeding hopper 1 and the crushing chamber 5; the crushing chamber 5 is circular, the chopping plate 3, the rotor set, the sieve sheet 9, the small toothed plate 4 and the large toothed plate 41 are arranged in the crushing chamber 5, the chopping plate 3 is horizontally arranged in the crushing chamber 5, the chopping plate 3 is positioned on the intersection line of the tangential feeding hopper 1 and the crushing chamber 5, the sieve sheet 9 is arranged below the rotor set, each sieve hole 91 is formed in the sieve sheet 9, the included angle between the obliquely arranged sieve holes 91 and the horizontal plane is 60 degrees, the rotor set comprises a rotor disc 71 and a hammer sheet 6, the center of the rotor disc 71 is arranged on a rotor shaft 7, the rotor discs 71 are connected through pin shaft sleeves and pin shaft nuts, the hammer sheet 6 is fixed on the rotor disc 71 through a hammer sheet pin shaft 61, the small toothed plate 4 is arranged on the inner wall of the crushing chamber 5 on the lower side of the chopping plate 3, and the large toothed plate 41 is arranged on the inner wall of the crushing chamber 5 below; the transmission system comprises a rotor shaft 7, a small belt pulley 11 and a material conveying fan 82, wherein the small belt pulley 11 and the material conveying fan 82 are respectively arranged at two ends of the rotor shaft 7 through rolling bearings 10; the discharging mechanism 8 comprises a material collecting barrel 81 and a material throwing port 83, and the material throwing port 83 is connected with the crushing chamber 5 below the sieve sheet 9 through a material conveying fan 82 and the material collecting barrel 81. The interception plate 3 is a tooth-shaped interception plate 3, the insections of the tooth-shaped interception plate 3 are arranged downwards, and one end of the tooth-shaped interception plate 3, which is connected with the crushing chamber 5, is arranged along with the small toothed plate 4. The hammer sheets are rectangular hammer sheets subjected to quenching and heating treatment, the quenching area 62 is the area at two ends and two sides of the position of the two pin shaft holes, and the rectangular hammer sheets are uniformly distributed along the width motion track direction of the crushing chamber 5. When the rotor set is in the radial direction, the distance from the bottom end of the hammer sheet to the inner surface of the sieve sheet 9 is 6 mm. The diameter of the screen hole 91 on the screen piece 9 is 3mm, the opening rate is 32.6%, and the wrap angle of the screen piece 9 is 180 degrees.
Wherein the diameter of the rotor is the main parameter of the crusher, which significantly affects the productivity and the working performance of the crusher, and the diameter of the rotor and the width of the crushing chamber are designed by the following formula:
DB＝KcN/u＝0.65×4/7＝0.037
in the formula: d-rotor diameter, i.e. the maximum diameter of revolution of the hammer
B-crushing chamber width
Kc-empirical coefficient, commonly used K ═ 0.55-0.075
N-power of motor, kw, known raw data N ═ 4kw
u is the rotation linear velocity m/s of the hammer sheet, the brittle feed such as corn, sorghum and other grains are crushed, u is 65-80 m/s, and the crusher of the embodiment takes u as 70 m/s.
The ratio of D to B is 1.3-2.8, D is 0.3-0.65 m in common use, when a large rotation diameter is adopted, the rotation inertia can be large, the adaptability to uneven feeding is strong, D is 320mm, and B is 115 mm.
The linear velocity of the tail end of the hammer is an important parameter influencing the performance, the structure and the transmission of the crusher, the production capacity of the crusher can be improved by increasing the linear velocity of the hammer within a certain range, the power consumption is reduced, the particle size is thinned, the hitting, rubbing and grinding effects of the hammer on materials are enhanced, and the crushing capacity can be increased. The hammer mill of this embodiment mainly crushes the brittle feedSuch as corn, sorghum, etc., so the linear speed u of the hammer blade type crusher of this embodiment is 70m/s and the rotation speed n of the main shaft1＝w/(2π)＝4178r/min。
The rated productivity of rubbing crusher in this embodiment is mainly according to the cereal that smashes the water content and does not exceed 14%, and the operating mode is considered when the sieve piece of aperture 3mm, and the size of productivity ratio should be decided according to the needs of production, the utility model discloses a towards rural individual household, available following formula calculates:
Q＝3.6KrD2Bn1/60(t/h)＝3.6×0.45×0.5×0.3202×0.115×4178/60＝0.6642(t/h)
in the formula: k is an empirical coefficient and depends on the surface shape of the screen sheet and the size of the screen holes, wherein K is 0.42-0.76, the sizes of the punching screen and the screen holes are smaller than 3mm, and the sizes of the fish scale screen and the screen holes are larger than 3mm
r-bulk material weight, r is 0.5 ton/square meter
D-diameter of rotor of hammer sheet, D0.320 m
B-width of crushing chamber, B is 0.115 m
n1Spindle speed, n14178 rpm
The matched power is the motor power: 4 kW; model Y112-2 motor.
The transmission system of the hammer feed grinder in the embodiment adopts a V-belt transmission mode.
Calculating the power Pca＝KdP＝1.365×4＝5.46kw
In the formula: kd-the coefficient of the operating condition, taken in this equation 1.365; p-nominal power transmitted determines the reference diameter d of the pulleyd1And dd2
The transmission ratio is as follows: n ═ i1/n2＝4178/2800＝1.492
(1) Reference diameter d of small belt wheeld1：
In order to increase the service life of the V-belt, a larger diameter is preferably selected.
dd1＝1200(P/n1)1/3＝118.3mm
Selecting: dd1112mm, outer diameter da1＝117.5mm
(2) Reference diameter d of large belt wheeld2：
dd2＝idd1(1-0.02)＝1.49×112(1-0.02)＝164.6mm
-elastic sliding coefficient, taken to be 0.02
Selection of dd2160mm, outer diameter da2＝16.5mm。
The belt speed V:
V＝πdd1n1/(60×1000)＝3.14×112×4178/(60×1000)＝24.5m/s<Vmax＝35～40m/s。
determining the center distance a and the length L of the stripd：
(1) Initial centering distance a0：
0.7(dd1+dd2)＜a0＜2(dd1+dd2)
Namely 190.4<a0<544
Taking according to the structural requirements: a is0＝500mm
(2) Reference length of belt
L is 1400mm
(3) Calculating the center distance a
amax＝a+0.03Ld＝556.2mm
amin＝a-0.015Ld＝493.2mm
Due to amax＜a＜aminTherefore, the value of a is suitable.
Small belt wheel wrap angle alpha1
α1＝180°-(dd1-dd2)/a×57.5°＝174.63°>120 degrees, so that a tensioning wheel is not needed.
Determining the number of bands Z
Z＝Pca/{(P0+ΔP0)KαKL5.46/{ (2.51+0.26) × 0.99 × 1.14} -, 1.75, and 2Z are taken.
In the formula: kαAngle of wrap coefficient, KαTake 0.99
KLLength factor, KLTake 1.14
P0Rated power of a single V-band, P0Take 2.51kw
ΔP0Increment of rated power of a single V-band, Δ P0Take 0.26.
Determining the pretension F of the belt0
F0＝500Pca(2.5/Kα-1)+qv2
＝500×5.46(2.5/0.99-1)/(2×24.5)+0.08×24.52＝13.3N
In the formula: q-the mass per unit length of the V-belt, in kg/m, q is 0.08 kg/m.
Calculating the force applied to the shaft by the belt drive
(1) Effective force Ft
Ft＝Pca×103/v＝5.46×103/24.5＝222.86N
(2) Force F acting on the shaftr
Fr＝2F0ZSin(α1/2)＝2×133×2×Sin(174.63/2)＝531.42N
(3) Considering that the initial tension of the new belt is 1.5 times of the normal tension
Frmax＝1.5Fr＝797.12N
The diameter of the small belt pulley is as follows: 117.5mm
The diameter of the large belt wheel is as follows: 165.5mm
The belt is a common V-belt A type, the belt length is 1400mm, and the number of the belts is 2.
Due to dd1＝112mm or less than 300mm, so the small belt wheel can be made of a belly plate type. As shown in fig. 5, the outer diameter da117.5 mm; reference circle diameter dd112 mm; the corresponding shaft diameter d of the belt wheel is 30 mm; reference circle diameter, d12d is 60 mm; width of belt pulley
The distance f from the symmetrical surface of the first groove to the end surface is 10; the slot pitch e is 15.3; reference width bd11.0 as a whole; minimum tooth root height hfmin2.75, take the tooth root height h f4; corner of wheel groove
Rotor shaft design
The known input power is: p is 3.92KW, the rotation speed of the rotor rotation shaft is n is 4178r/min, the circumferential force of the belt: ft222.86N, the radial force of the belt on the rotor shaft: frThe workload is more balanced when 531.42N is exceeded.
Selecting a shaft material:
selecting 45 steel and carrying out quenching and tempering treatment. And (6) looking up a table to obtain: sigmab＝640MPa，σs＝355MPa，σ-1＝275MPa，τ-1155MPa, allowable bending stress: [ sigma ]+1]＝215MPa，[σ0]＝100MPa，[σ-1]＝60MPa。
Preliminarily estimating the diameter of the shaft for mounting the small belt wheel:
calculated as the torsional strength: d ═ A (P/n)1/3＝126×(3.92/4178)1/3＝12.335mm
In the formula: d-diameter of the shaft at the calculated section, mm
n-rotational speed of the shaft, n-4178 r/min
P-rated power transmitted by the shaft, P ═ 3.92kw
A is rated power transmitted by the shaft, A is 103126, and A is 126
Calculated as torsional stiffness: d ═ B (P/n)1/4＝109×(3.92/4178)1/4＝19.08
In the formula: b-coefficient determined by allowable twist angle, obtained by table look-up, B being 109
According to the characteristics of the structure of the shaft and the technological requirements, the shaft diameter with a small belt wheel is selected: d1＝30mm。
(2) The structural design of the shaft:
determining the arrangement scheme and positioning mode of parts on the shaft as shown in FIG. 6
Determining the shaft diameter of each section:
this rubbing crusher's rotor dish is installed on the E section, carries out axial positioning with the axle head retaining ring, and with parallel key cooperation circumferential direction location, A section diameter of axle is the same with the bearing internal diameter to it is the same with B section bearing, and the diameter is 40mm, again according to bearing location shoulder height, gets E section diameter 50mm, D section installation fortune material fan, according to the model of the fortune material fan of selecting, selects D section diameter 30mm, and axle section C, D all adopts the parallel key cooperation to make circumferential direction location.
Determining the length of each section of the shaft:
the length of the C section is 36mm according to the width of the small belt wheel, the lengths of the A section and the B section are 80mm according to the model 6308 of the selected bearing, the length of the E section is 185mm according to the width of the crushing chamber, and the length of the D section is 73mm according to the model of the selected material conveying fan.
Rotor disk design
The rotor disc is made of 45 steel, the rotating diameter D of the hammer sheet is 320mm, the diameter of the rotor disc can be designed to be 170mm according to the structural size of the hammer sheet, and the thickness of the rotor disc is designed to be 4 mm.
The number of the hammer pieces of the crusher can be designed by the following formula:
Z＝K1b is 0.36 × 115/3 is 13.8, and Z is 14.
In the formula: k1-the hammer blade is assigned a density factor, K1Taking K as 0.28-0.421＝0.36
B-width of crushing chamber, B115 mm
Thickness of the hammer piece is 3mm
The hammer slice arrangement adopts a symmetrical arrangement mode, the symmetrical pin shafts and the two groups of hammer slices on the symmetrical pin shafts are symmetrically arranged, the movement track is repeated, the number of the hammer slices needs to be increased under the same track, more steel is consumed, but the resultant force can be balanced mutually, the couple is not generated, the rotor movement is balanced, the material does not laterally move, the hammer slices are uniformly abraded, and the like.
In the embodiment, spring steel 65Mn is selected as the material of the hammer sheet, the surface quenching treatment is performed on the spring steel, the hardness requirement of a quenching area reaches 50-57 HRC, the hardness of a non-quenching area does not exceed 28HRC, and a quenching area is shown in fig. 3.
The hammer-screen gap (distance from the bottom end of the hammer blade to the inner surface of the screen blade in the radial direction of the rotor) Δ R was 6 mm.
Screen slice design
(1) Size, material of sieve sheet:
the length of the sieve sheet is: l is1＝πR＝3.14×(346-5×2)/2＝527mm。
The width of the sieve sheet is: b is 115 mm.
The material of the sieve sheet adopts high-quality carbon structural steel 35
(2) Diameter of sieve mesh
The rubbing crusher of this embodiment adopts the round sieve that punches a hole, and this embodiment mainly uses cereal such as smashing maize, sorghum as the owner, so adopts the diameter to be 3 mm's sieve mesh, and the sieve piece cornerite is 180.
The arrangement of the screen holes is shown in fig. 4, the material flow direction is from right to left, and the included angle between the oblique screen holes and the horizontal plane is 60 degrees.
Opening ratio K ═ pi d2/(2×31/2×t)＝3.14×32/(2×31/2×52)＝32.6％
In the formula: d is the diameter of the sieve pore, and d is 3 mm; t is the distance between the center sentences of the sieve holes, and t is 5mm
Toothed plate design
60Mn alloy steel is adopted, the wrap angle of the large toothed plate is 90 degrees, and the wrap angle of the small toothed plate is 30 degrees.
The size of the large toothed plate is as follows: length L1/2 × pi R1/2 × (340-5 × 2) ═ 263.5mm, and width B115 mm.
The size of the small toothed plate is as follows: long L1＝(302/3602) X 2 pi R87.8 mm and width B115 mm.
The big pinion rack and the small pinion rack are fastened on the upper box body through bolts and nuts, the big pinion rack is provided with six groups of bolts and nuts, and the small pinion rack is provided with four groups of bolts and nuts.
The feeding mode in the embodiment is a tangential feeding mode, and the included angle between a tangential feeding hopper and the horizontal plane is 30 degrees; a pneumatic conveying air suction device is adopted, and a two-stage centrifugal fan with the pressure of 3kw is selected.
The main technical parameters of the hammer mill of the embodiment are as follows:
the utility model discloses a hammer mill has following characteristics:
1. problems of material circulation layer
Through carrying out reasonable design to the shape, the structure etc. of smashing the room, namely install the cutting toothed plate in circular crushing indoor to destroy the formation of circulation layer effectively, improved the crushing efficiency of fodder.
2. Easy abrasion of hammer
(1) The shape, thickness, number, group number, arrangement form and the like of the hammer pieces are reasonably designed; (2) the material of the hammer is reasonably selected, the hammer is quenched and heated, and the quenching process of the hammer is improved, so that the wear resistance of the hammer is effectively improved.
3. Problem of material particle size uniformity
The sieve sheet, the hammer sheet, the gap between the hammer sheet and the sieve plate and the like are reasonably designed, so that the uniformity of the granularity of the materials is effectively improved.
4. Problem of noise
Through carrying out reasonable design to transmission system and rotor shaft for this machine transmission is steady, thereby the effectual noise that has reduced.
The utility model discloses a hammer mill has advantages such as the model is little, simple structure, area is little, the noise is little, long service life, mainly supplies rural individual family to breed family and small-size plant and uses, mainly smashes cereal such as maize, chinese sorghum, soybean.
The above detailed description of the embodiments of the present invention has been provided with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and those skilled in the art can make several equivalent transformations and substitutions without departing from the principles of the present invention after learning the contents of the present invention.
Claims (5)
1. The utility model provides a hammer mill which characterized in that: the device comprises a feeding mechanism, a crushing chamber, a transmission system and a discharging mechanism, wherein the feeding mechanism comprises a tangential feeding hopper, the included angle between the tangential feeding hopper and the horizontal plane is 30 degrees, and a striker plate is further arranged at the joint of the tangential feeding hopper and the crushing chamber; the crushing chamber is circular, a chopping plate, a rotor set, screen pieces, a pinion plate and a pinion plate are arranged in the crushing chamber, the chopping plate is horizontally arranged in the crushing chamber and is positioned on the intersection line of the tangential feeding hopper and the crushing chamber, the screen pieces are arranged below the rotor set, each screen hole is formed in each screen piece, the included angle between each obliquely arranged screen hole and the horizontal plane is 60 degrees, the rotor set comprises a rotor disc and a hammer piece, the center of the rotor disc is arranged on a rotor shaft, the rotor discs are connected through a pin shaft sleeve and a pin shaft nut, the hammer piece is fixed on the rotor disc through a hammer piece pin shaft, the pinion plate is arranged on the inner wall of the crushing chamber on the lower side of the chopping plate, and the pinion plate is arranged on the inner wall of the crushing chamber below the tangential feeding hopper; the transmission system comprises a rotor shaft, a small belt wheel and a material conveying fan, wherein the small belt wheel and the material conveying fan are respectively arranged at two ends of the rotor shaft through rolling bearings; the discharging mechanism comprises a centrifugal fan, a material collecting cylinder and a material throwing port, and the material throwing port is connected with a crushing chamber below the sieve sheet through the centrifugal fan and the material collecting cylinder.
2. The hammer mill according to claim 1, wherein: the chopping board is a tooth-shaped chopping board, the insections of the tooth-shaped chopping board are arranged downwards, and one end of the tooth-shaped chopping board, which is connected with the crushing chamber, is arranged along with the small toothed board.
3. The hammer mill according to claim 1, wherein: the hammer is a rectangular hammer subjected to quenching and heating treatment, the quenching area is two ends and two side areas where the two pin shaft holes are located, and the rectangular hammers are uniformly distributed along the width motion track direction of the crushing chamber.
4. The hammer mill according to claim 1, wherein: when the rotor set is in the radial direction, the distance from the bottom end of the hammer sheet to the inner surface of the sieve sheet is 6 mm.
5. The hammer mill according to claim 4, wherein: the diameter of the sieve pores on the sieve sheet is 3mm, the opening rate is 32.6%, and the wrap angle of the sieve sheet is 180 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539121.4U CN212017990U (en) | 2020-04-13 | 2020-04-13 | Hammer mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539121.4U CN212017990U (en) | 2020-04-13 | 2020-04-13 | Hammer mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212017990U true CN212017990U (en) | 2020-11-27 |
Family
ID=73490257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020539121.4U Expired - Fee Related CN212017990U (en) | 2020-04-13 | 2020-04-13 | Hammer mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212017990U (en) |
-
2020
- 2020-04-13 CN CN202020539121.4U patent/CN212017990U/en not_active Expired - Fee Related
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