CN203140065U

CN203140065U - Pulverizer hammer

Info

Publication number: CN203140065U
Application number: CN 201320047499
Authority: CN
Inventors: 赵金盛
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-29
Filing date: 2013-01-29
Publication date: 2013-08-21
Anticipated expiration: 2023-01-29

Abstract

The utility model discloses a pulverizer hammer. The pulverizer hammer is in a sheet shape and comprises an upper section and a lower section, wherein the upper section is an installation area with an installation hole, the lower section is a striking area, and two side striking surfaces and a bottom surface of the striking area are respectively provided with surface overlaying tungsten carbide; and the two side striking areas are parallel to each other, the cross section of the striking area is rectangular, and a lead angle A is machined on the junction between each side striking surface and the bottom surface. The width between the two side striking surfaces of the striking area is smaller than or equal to that between two side surfaces of the installation area. By adopting the pulverizer hammer, materials which are pulverized in a high-speed collision way can run along a shortest perforation distance between a hammer striking point and a screening plate, and the perforation distance is shortened, so that the perforation time is shortened, and the powder output efficiency can be improved; the striking cross section is increased, so that the perforation distance between the material and a sieve plate is further shortened; and the material which is stricken and rebounded by the striking surface of the oblique upper section and the material which is stricken and rebounded by the top end of the hammer are secondarily collided and pulverized, so that the circulating speed of the material is further lowered, the pulverizing efficiency is increased, and the energy consumption is reduced.

Description

Hammer mills

Technical field

The utility model belongs to field of crushing equipment, relates to a kind of hammer mills.

Background technology

A kind of disintegrating apparatus that industries such as beater disintegrating machine is feed, brewage generally adopt, its energy consumption in pulverizing industry is the highest.Hammer leaf is again the core work parts of pulverizer, and the quality of its quality, performance influences great to material crush efficiency, processing cost, profit reciprocation.The professional standard of the People's Republic of China (PRC) and industry standard " beater disintegrating machine " regulation: the pattern of hammer leaf is rectangular plate, hits district's heat treatment or built-up welding tungsten carbide.Hammer leaf is worn to hang on the high speed rotor rotated dish and is hit material in the work, by comminuting matter under the effect of feeder, enter by the charging aperture of gravity from pulverizer, the material of low speed is by hammer leaf pound at a high speed, vertical direction or tangential direction in the striking point position along the scope of attack rebound, high-speed impact hammer leaf exterior annular sieve plate and second-time breakage again, the tiny material that meet perforation this moment passes sieve aperture under the effect of negative pressure and gravity, material is the perforation distance from striking point to the stroke between sieve plate, the perforation distance is more little, the time that material passes sieve aperture is more few, and efficient is more high.When some are upspring again because of the fine particle that launches the sieve aperture blind area and have no chance to bore a hole, pulverizer high speed rotor rotated dish and with the drive of the straight side of hammer leaf under, also at high speed rotary motion, form circulation layer.Because the formation of circulation layer, this broken material granule are passed through sieve aperture extremely difficult time under the effect of circulation layer, thereby greatly reduce crush efficiency, and the circulation material grain of time and again stack increased the weight of the quick wearing and tearing of hammer leaf, increased energy consumption.In recent years, along with the continuous upgrading of feedstuff industry competition, and the raising of culturing producer's understanding, the material grinding granularity is more and more thinner.Reality is that the material of pulverizing is more thin, and the circulation layer that forms in crushing chamber is also more thick, and crush efficiency is more low, and the excessive wear of hammer leaf is also more severe, has increased producing cost.In order to adapt to vast requirement of client, make hammer leaf more durable, domestic and external manufacturers are the hammer leaf multilayer Talide that hit district's built-up welding, and the shape after the built-up welding is similar to a trapezoidal little perching knife.After material is hit by hammer leaf, vertical direction or tangential direction along the scope of attack rebounds the material of pulverizing because of high velocity impact in the striking point position, because the trapezoidal perching knife style characteristic after the built-up welding has changed the material angle of rebound, increased the distance of boring a hole after the material fragmentation, production capacity does not have substantial variation.

The utility model content

The purpose of this utility model provides a kind of by reducing material perforation distance, increasing material and collide the hammer mills that broken number of times improves crush efficiency, cuts down the consumption of energy.

The technical solution adopted in the utility model is as follows:

A kind of hammer mills is en plaque, comprising: epimere is the installing zone 1 that is provided with installing hole 103, and hypomere is for hitting district 2, and the both sides scope of attack 201 and the bottom surface 204 of hitting the district include top layer built-up welding tungsten carbide 205; The described both sides scope of attack 201 is parallel to each other, and the cross section that hits district 2 is rectangle, the described both sides scope of

attack

201 and 204 intersections, described bottom surface processing lead angle 1.

The width that the described strike district 2 both sides scopes of attack are 201 is less than or equal to the width of 101 of the two sides of described installing zone 1.

The length L 2 in described strike district 2 accounts for 30%～40% of described hammer mills total length L 1.

The angle α of described lead angle inclined-plane and bottom surface is 15～20 °, and the width that deducts the residue bottom surface behind the lead angle one accounts for 50%～60% of overall width.

The epimere scope of attack 2011 of the described both sides scope of attack 2 slopes inwardly, and the inside indentation in its bottom.

The length L 3 of the described epimere scope of attack 2011 account for described strike district 2 total length L 2 50%; The inside angle of inclination beta of the described epimere scope of attack 2011 is 4～10 °.

The side 101 of described installing zone and forward and backward 104 intersections processing lead angle 2 102.

The utlity model has following advantage and progress:

1. the both sides scope of attack 201 in strike of the present utility model district includes top layer built-up welding tungsten carbide 205 and is parallel to each other, and the cross section that hits district 2 is rectangle, and the width that hits 201 of district's 2 both sides scopes of attack is less than or equal to the width of 101 of the two sides of described installing zone 1.Be that the hammer leaf of perching knife shape is compared with the strike district of prior art, after material after high velocity impact is pulverized is hit by hammer leaf, in the striking point position after the vertical direction of the scope of attack or tangential direction bounce-back, material is flown to the stroke shortening of sieve plate by striking point, namely shortened the perforation distance of material, shortening the perforation distance is to shorten the aperture time, has improved powder delivery efficient, has reduced energy consumption.

2. process lead angle one by bottom surface and the intersection, two sides of hitting the district, at a high speed the air-flow pushed open of the hammer body of rotation locates to form a kind of material and the crossing vortex of compass screen surface that is different from circulation layer at lead angle one (also can be described as and be forced into the angle), and can force material to enter to be cut strike herein; Having increased scope of attack area by lead angle one simultaneously, is inclined-plane and relative with sieve plate owing to increase the scope of attack, and the material after being hit by this face flies further to shorten to the stroke of sieve plate, has namely further shortened the perforation distance, and the pulverizing production capacity is further improved.

3. the both sides epimere scope of attack 2011 that hits district 2 slopes inwardly, and the inside indentation in its bottom, the material that material after the epimere scope of attack that realizes hits and the aclinal hypomere scope of attack the hit collision of to meet again, increased the primary collision pulverizing, slow down in material collision back, further degraded material velocity of circulation improves crush efficiency, cuts down the consumption of energy.

4. the side 101 of described installing zone processes lead angle 2 102 with front-back 104 intersections, reduce windage, be implemented under the situation that hammer leaf rotates at a high speed, degraded forms the inducement of circulation layer, the easier hammer leaf that focuses on of material is hit near district and the sieve plate, for the sieve aperture that hit and pass through again of material is created excellent condition; Electric current when reducing electric motor starting and running simultaneously.

Description of drawings

Fig. 1 is the structural front view of embodiment 1 of the present utility model;

Fig. 2 is the structure left view of embodiment 1 of the present utility model;

Fig. 3 is the A-A cutaway view of Fig. 1;

Fig. 4 is the B-B cutaway view of Fig. 1;

Fig. 5 is the upward view of Fig. 1;

Fig. 6 is the structural front view of embodiment 2 of the present utility model;

Fig. 7 is the structure left view of embodiment 2 of the present utility model;

Fig. 8 is the C-C cutaway view of this Fig. 6.

Fig. 9 is that material flight path and perforation were apart from comparison diagram after the perching knife shape of the scope of attack in strike of the present utility model district and prior art was hit the district and hit material;

Figure 10 is the epimere scope of attack of embodiment 2 and the material collision schematic diagram of hypomere scope of attack strike.

The specific embodiment

Embodiment one

Shown in Fig. 1-5, a kind of hammer mills, be en plaque, comprise: epimere is for being provided with installing hole 103 installing zones 1, hypomere is for hitting district 2, the length L 2 in described strike district 2 accounts for 30%～40% of described hammer mills total length L 1, and the both sides scope of attack 201 and the bottom surface 204 of hitting the district include top layer built-up welding tungsten carbide 205.The described both sides scope of attack 201 is parallel to each other, and the cross section that hits district 2 is rectangle, the described both sides scope of

attack

201 and 204 intersections, described bottom surface processing lead angle 1.The width that the described strike district 2 both sides scopes of attack are 201 is less than or equal to the width of 101 of the two sides of described installing zone 1.

The hammer mills of the utility model product is different from other manufacturer and directly forms trapezoidal perching knife shape in the weldering of straight end face, but machining in advance, and there have evagination to become the built-up welding thing of evagination perching knife shape to be built-in.As shown in Figure 9, hammer mills is worn and is hung on the high speed rotor rotated dish and be driven to rotate, after material after high velocity impact is pulverized is hit by hammer leaf, vertical direction or tangential direction in the striking point position along the scope of attack rebound, material is flown to sieve plate 3 by striking point, after material is hit in the strike district of hammer leaf of the present utility model, material is along straight line M1 flight and finally fly to sieve plate and perforation and go out, the strike district of prior art also finally flies to go out to sieve plate and perforation along straight line M2 flight for the material of the hammer leaf strike of perching knife shape, as seen from the figure, the stroke of material flight of the present utility model shortens, namely shortened the perforation distance of material, shortening the perforation distance is to shorten the aperture time, has improved powder delivery efficient, has reduced energy consumption.

The described both sides scope of

attack

201 and 204 intersections, described bottom surface processing lead angle 1.At a high speed the air-flow pushed open of the hammer body of rotation locates to form a kind of material and the crossing vortex of compass screen surface that is different from circulation layer at lead angle one (also can be described as and be forced into the angle), and can force material to enter to be cut strike herein; Having increased scope of attack area by lead angle one simultaneously, is inclined-plane and relative with sieve plate owing to increase the scope of attack, and the material after being hit by this face flies further to shorten to the stroke of sieve plate, has namely further shortened the perforation distance, and the pulverizing production capacity is further improved.The angle α of described lead angle inclined-plane and bottom surface is 15～20 °, and the width that deducts the residue bottom surface behind the lead angle one accounts for 50%～60% of overall width.

The side 101 of described installing zone and front-back 104 intersections processing lead angle 2 102.Reduce windage, be implemented under the situation that hammer leaf rotates at a high speed, degraded forms the inducement of circulation layer, and the easier hammer leaf that focuses on of material is hit near district and the sieve plate, for the sieve aperture that hit and pass through again of material is created excellent condition; Electric current when reducing electric motor starting and running simultaneously.

Through the utility model product in Shandong six and group, Asia-Pacific surplus intelligent group, day general Sunshine Group, the Hebei group of Xingda etc. 200 family's enterprise of good standing use comparison, the energy-saving and production-increase effect is obvious.Power consumption per ton can reduce 0.5-1.0 degree/ton on year-on-year basis.Flour extraction improves 12%-15%, and is time saving and energy saving, economical and practical.

Embodiment two

As Fig. 6-8, on the basis of embodiment 1, the epimere scope of attack 2011 of the described both sides scope of attack 2 slopes inwardly, and the inside indentation in its bottom.As shown in figure 10, because the epimere scope of attack tilts, the epimere scope of attack and the hypomere scope of attack are not parallel, the material 402 that material 401 after the epimere scope of attack 2011 that then tilts hits and the aclinal scope of attack 201 hit can meet and collide before walking to sieve plate 3 again, increased the primary collision pulverizing, slow down in material collision back, the material velocity of circulation of further degrading has improved crush efficiency, cut down the consumption of energy.The length L 3 of the epimere scope of attack 2011 account for described strike district 2 total length L 2 50%; The inside angle of inclination beta of the described epimere scope of attack 2011 is 4～10 °.

Claims

1. a hammer mills is en plaque, comprising: epimere is for being provided with the installing zone (1) of installing hole (103), and hypomere is for hitting district (2), and the both sides scope of attack (201) and bottom surface (204) of hitting the district include top layer built-up welding tungsten carbide (205); It is characterized in that the described both sides scopes of attack (201) are parallel to each other, and the cross section that hits district (2) is rectangle, the described both sides scopes of attack (201) and intersection, described bottom surface (204) processing lead angle one (202).

2. a kind of hammer mills as claimed in claim 1 is characterized in that, the width between described strike district (2) the both sides scopes of attack (201) is less than or equal to the width between the two sides (101) of described installing zone (1).

3. a kind of hammer mills as claimed in claim 1 is characterized in that, the length (L2) in described strike district (2) accounts for 30%～40% of described hammer mills total length (L1).

4. a kind of hammer mills as claimed in claim 1 is characterized in that, the angle α of described lead angle inclined-plane and bottom surface is 15～20 °, and the width that deducts the residue bottom surface behind the lead angle one accounts for 50%～60% of overall width.

5. as each described a kind of hammer mills among the claim 1-4, it is characterized in that the epimere scope of attack (2011) of the described both sides scopes of attack (2) slopes inwardly, and the inside indentation in its bottom.

6. a kind of hammer mills as claimed in claim 5 is characterized in that, the length (L3) of the described epimere scope of attack (2011) account for described strike district (2) total length (L2) 50%; The inside angle of inclination beta of the described epimere scope of attack (2011) is 4～10 °.

7. a kind of hammer mills as claimed in claim 1 is characterized in that, the side of described installing zone (101) and forward and backward (104) intersection processing lead angle two (102).