WO2010060285A1 - 锤片式粉碎机 - Google Patents

锤片式粉碎机 Download PDF

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Publication number
WO2010060285A1
WO2010060285A1 PCT/CN2009/070876 CN2009070876W WO2010060285A1 WO 2010060285 A1 WO2010060285 A1 WO 2010060285A1 CN 2009070876 W CN2009070876 W CN 2009070876W WO 2010060285 A1 WO2010060285 A1 WO 2010060285A1
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WO
WIPO (PCT)
Prior art keywords
spacer
hammer
rotor
crushing chamber
sieve plate
Prior art date
Application number
PCT/CN2009/070876
Other languages
English (en)
French (fr)
Inventor
郝波
贺志昌
赵庚福
姜伟忠
周育东
洑飞波
Original Assignee
江苏正昌粮机股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 江苏正昌粮机股份有限公司 filed Critical 江苏正昌粮机股份有限公司
Priority to RU2010110815/13A priority Critical patent/RU2487759C2/ru
Publication of WO2010060285A1 publication Critical patent/WO2010060285A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/04—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters hinged to the rotor; Hammer mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details

Definitions

  • the present invention relates to a hammer mill, and in particular to an improvement of a hammer mill screen, a rotor, and a crushing chamber. Background technique
  • the large spacer on the main shaft of the hammer mill is a solid circular sleeve.
  • the large spacer includes a circular spacer body 15-1 and a shaft hole 15-2.
  • the hole 15-2 is disposed at the center of the spacer body, and the spacer body is uniform in thickness, and the large spacer is mounted on the main shaft of the pulverizer through the shaft hole 15-2 to isolate the hammer plate of the rotor. Since the outer diameter of the large spacer is quite different from the outer diameter of the hammer frame, during the high-speed operation of the rotor, the outer periphery of the hammer frame is susceptible to vibration, thereby affecting the smoothness of the rotor operation.
  • the hammer mill has a wide variety, but in the design of the crushing chamber, a powder chamber is mostly used. As the pulverizer develops toward a larger size, the width of the pulverization chamber becomes wider and wider.
  • the development of aquatic materials such as fish and shrimp materials is relatively rapid, and the sieve holes for producing aquatic materials are relatively small, only ⁇ ⁇ , or even smaller, so that the thickness of the sieve plate is very thin (the thickness is generally close to the pore diameter).
  • the middle portion of the sieve plate is easily concave, and the middle portion of the sieve plate is easily damaged by collision with the hammer on the rotor, and the sieve plate is partially damaged, and the entire sieve plate must be replaced, which is wasteful; and the wider the width of the crushing chamber,
  • the material will run along the axial direction to both sides, resulting in uneven load of the entire axial hammer piece participating in the pulverization, and the hammer pieces at both ends are worn quickly and affect the output of the pulverizer. Because during the pulverization, the material is driven by the hammer, it is easy to form a powder circulation layer on the surface of the sieve plate.
  • the technical problem to be solved by the present invention is to provide a hammer mill for reducing the vibration of the hammer frame and improving the smooth running of the rotor in view of the above-mentioned deficiencies of the prior art.
  • a hammer type pulverizer comprising: a pressure screen frame, a sieve plate, a sieve plate frame, a motor, a base, a coupling, a rotor, a rotor shaft, and a hammer a secondary crushing chamber
  • the motor mounted on the base is coupled to the rotor of the crusher through a coupling
  • the rotor, the sieve plate and the sieve plate frame together constitute a crushing chamber
  • the secondary crushing chamber is located at a lower end of the crushing chamber.
  • Rotor The rotor shaft is coupled to the coupling, and the rotor is provided with a plurality of hammers.
  • a large spacer is disposed between the adjacent two hammer plates of the rotor shaft, and the large spacer includes an inner edge of the spacer and an outer edge of the spacer.
  • the two sides of the inner edge of the spacer sleeve and the outer edge of the spacer sleeve are respectively tightly and fixedly connected to the adjacent hammer frame, and the inner edge of the spacer sleeve is disposed on the rotor shaft, and the outer edge of the spacer sleeve is disposed at The inner side of the hammer mounting position, and the movement locus from the hammer piece L is 60 mm.
  • the inner edge of the spacer and the outer edge of the spacer are connected by a spacer waist, and the inner edge of the spacer is thicker than the outer edge of the spacer and the thickness of the spacer waist, and the outer edge of the spacer is separated.
  • the inner edge of the sleeve and the waist of the spacer sleeve are integrally connected, that is, the circular spacer body has a "work" shape along the radius profile.
  • At least one partition is arranged in the grinding chamber, and the crushing chamber is divided into at least two small crushing chambers through the partition plate, and corresponding crushing screen frames are also arranged in the small crushing chamber. , sieve plate, sieve plate frame.
  • a sieve plate support plate is further disposed in the small crushing chamber.
  • At least one gas nozzle is disposed in the secondary pulverization chamber, and at least one vent hole is disposed on the gas nozzle.
  • the powder circulation layer is destroyed by the vent hole, thereby improving the efficiency of discharge and increasing the yield.
  • the air outlets disposed on the gas nozzles are at least two rows, and the center of the two rows of holes at the outer ends is within 120 degrees of the center line of the gas nozzle.
  • the present invention has the following beneficial effects:
  • the present invention is provided with a large spacer between two adjacent hammer plates of the rotor shaft, the large spacer comprising an inner edge of the spacer sleeve and an outer edge of the spacer sleeve, both sides of the inner edge of the spacer sleeve and both sides of the outer edge of the spacer sleeve Separately connected to the adjacent hammer plate, the inner edge of the spacer is arranged on the rotor shaft, and the outer edge of the spacer is arranged on the inner side of the hammer mounting position, and the movement track of the hammer is l ⁇ 60mm, which is very close to the hammer. .
  • the inner circumference and the outer circumference of the rotor hammer frame are tightly fixedly connected with the spacer sleeve, and the inner edge of the spacer sleeve of the large spacer can not only serve to isolate the hammer frame but also pass through the partition.
  • the outer edge of the sleeve forms an integral part of the outer circumference of the large spacer and the hammer frame, thereby improving the rigidity of the hammer frame, thereby effectively reducing the vibration of the hammer plate when the rotor is running, and improving the stability of the rotor operation.
  • the cross-sectional shape of the large spacer of the present invention is "work"-shaped, so that while increasing the radial dimension of the spacer, the size of the axial hollowing of the spacer is increased to reduce or not increase the size of the large spacer. Quality, no increase in cost, does not increase the load on the machine.
  • the thickness of the inner edge of the spacer is greater than the thickness of the outer edge of the spacer and the waist of the spacer, further ensuring the quality of the spacer under the premise of the strength of the large spacer.
  • the invention is provided with at least one partition in the pulverization chamber, and the pulverization chamber is divided into at least two small powders
  • the crushing chamber, and the sieve plate, the pressure sieve frame and the sieve plate frame are arranged in the small crushing chamber, the width of the sieve plate in the crusher is reduced, the sieve plate is not easily damaged during work, and the service life of the sieve plate is prolonged. If it is damaged, it only needs to replace the damaged piece, which effectively reduces the loss of the sieve plate and also improves the crushing efficiency of the crusher.
  • the sieve plate support plate provided in the small pulverization chamber further effectively prevents the concave portion in the middle portion of the sieve plate, thereby avoiding the concave portion in the middle portion of the sieve plate to generate collision between the sieve plate and the hammer plate, preventing the damage of the sieve plate and improving the life of the sieve plate.
  • the present invention is provided with a gas nozzle for destroying the powder circulation layer in the secondary pulverization chamber. Since the gap between the hammer piece and the sieve plate is constant during the operation, the powder is rotated circumferentially following the hammer piece, which is easily formed. The powder circulation layer, the powder circulation layer will hinder the powder from passing through the sieve hole, affecting the output of the pulverizer, especially when using a small-aperture sieve plate (pore diameter ⁇ 1.5mm or less), and the yield reduction is particularly obvious.
  • Fig. 1 is a cross-sectional view of the side crushing chamber of the present invention.
  • FIG. 1 Cross-sectional view of the front crushing chamber of the present invention.
  • Fig. 3 is an enlarged schematic view showing a portion A of Fig. 2;
  • FIG. 1 Schematic diagram of the sieve plate support plate.
  • Fig. 7 is an enlarged schematic view showing a portion B of Fig. 6.
  • Figure 9 is a three dimensional view of the improved large spacer of Figure 8.
  • Figure 10 is a structural view of a prior art large spacer.
  • Figure 11 Schematic diagram of the gas nozzle structure.
  • the hammer mill includes mainly: a screen frame 3, a sieve plate 4, a sieve frame 5, a motor 7, a base 8, a coupling 9, and a rotor. 10.
  • the motor 7 mounted on the base 8 is coupled via a coupling 9 and a pulverizer rotor 10.
  • the rotor 10, the sieve plate 4 and the sieve frame 5 together constitute a large crushing chamber, and the secondary crushing chamber 14 is located at the lower end of the large crushing chamber, and the sieve plate 4 is pressed against the sieve frame 5 by the crushing frame 3.
  • the rotor shaft 11 of the rotor 10 is coupled to a coupling 9, and a plurality of hammers 12 are mounted on the rotor 10.
  • a large spacer is disposed between two adjacent hammer plates of the rotor shaft 11.
  • the large spacer includes an inner edge of the spacer sleeve and an outer edge of the spacer sleeve, and two sides of the inner edge of the spacer sleeve and the outer edges of the spacer sleeve are respectively adjacent to each other
  • the hammer frame is tightly fixedly connected, and the inner edge of the spacer is disposed on the rotor shaft 11, and the outer edge of the spacer is disposed on the inner side of the mounting position of the hammer 12.
  • the diameter of the large spacer is increased beyond the trajectory of the hammer 12, that is, the trajectory from the hammer 12 is L, lmm L 60 mm.
  • the inner circumference and the outer circumference of the rotor hammer frame are tightly fixedly connected with the spacer sleeve, and the inner edge of the spacer sleeve of the large spacer can not only serve to isolate the hammer frame but also pass through the partition.
  • the outer edge of the sleeve forms an integral part of the outer circumference of the large spacer and the hammer frame, thereby improving the rigidity of the hammer frame, thereby effectively reducing the vibration of the hammer plate when the rotor is running, and improving the stability of the rotor operation.
  • the hammer mill comprises mainly: a screen frame 3, a sieve plate 4, a sieve frame 5, a motor 7, a base 8, and a coupling. 9.
  • the motor 7 mounted on the frame 8 is coupled by a coupling 9 and a pulverizer rotor 10.
  • the rotor 10, the sieve plate 4 and the sieve frame 5 together constitute a large crushing chamber, and the secondary crushing chamber 14 is located at the lower end of the large crushing chamber, and the sieve plate 4 is pressed against the sieve frame 5 by the crushing frame 3.
  • the rotor shaft 11 of the rotor 10 is coupled to a coupling 9 on which a plurality of hammers 12 are mounted, on the rotor shaft 11
  • An improved large spacer 16 is disposed between adjacent two hammer plates.
  • the improved large spacer 16 includes a spacer inner edge 16-3, a spacer outer edge 16-2, a spacer waist 16-1, and a shaft hole 16-4.
  • the thickness dl of the inner edge 16-3 of the spacer is greater than the thickness d2 of the outer edge 16-2 of the spacer and the thickness d3 of the spacer waist 16-1, BP: dl>d2, dl>d3.
  • the outer edge of the spacer 16-2, the inner edge of the spacer 16-3, and the waist 16-1 of the spacer are integrally connected, that is, the circular spacer body has a "work" shape along the radius profile.
  • the outer edge 16-2 of the spacer is disposed on the inner side of the mounting position of the hammer 12, and the diameter of the modified large spacer 16 is increased to the trajectory of the movement of the hammer 12, that is, the distance from the hammer, in the case where the weight does not change much.
  • the motion path of 12 is L, lmm L 60mm, and L can be 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm or 60mm.
  • the size of the axial hollowing of the spacer can be further increased or decreased without increasing the radial dimension of the spacer.
  • the quality of the large spacers does not increase the cost and does not increase the load on the machine.
  • the thickness of the inner edge of the spacer is greater than the thickness of the outer edge of the spacer and the waist of the spacer sleeve, further ensuring the quality of the spacer under the premise of the strength of the large spacer.
  • the hammer mill includes: a screen frame 3, a sieve plate 4, a sieve plate frame 5, a partition plate 6, a motor 7, and a machine.
  • the motor 7 mounted on the base 8 is coupled via a coupling 9 and a pulverizer rotor 10.
  • the rotor 10, the screen deck 4 and the screen deck 5 together form a large crushing chamber.
  • a partition 6 is fixedly mounted on the base 8.
  • the partition plate 6 divides the large crushing chamber into a first crushing chamber 1 and a second crushing chamber 2, and the first crushing chamber 1 and the second crushing chamber 2 are respectively mounted with a screen frame 3, a sieve plate 4, and a sieve plate holder 5.
  • the secondary pulverization chamber 14 is located at the lower ends of the first pulverization chamber 1 and the second pulverization chamber 2.
  • the rotor shaft 11 of the rotor 10 is coupled to the coupling 9.
  • a plurality of hammers 12 are mounted on the rotor 10, and a modified large spacer 16 is disposed between adjacent hammer frames of the rotor shaft 11.
  • the improved large spacer 16 includes a spacer inner edge 16-3, a spacer outer edge 16-2, a spacer waist 16-1, and a shaft hole 16-4.
  • the thickness dl of the inner edge 16-3 of the spacer is greater than the thickness d2 of the outer edge 16-2 of the spacer and the thickness d3 of the spacer waist 16-1, BP: dl>d2, dl>d3.
  • the outer edge of the spacer 16-2, the inner edge of the spacer 16-3, and the waist 16-1 of the spacer are integrally connected, that is, the circular spacer body has a "work" shape along the radius profile.
  • the outer edge 16-2 of the spacer is disposed on the inner side of the mounting position of the hammer 12, and the diameter of the modified large spacer 16 is increased to the trajectory of the movement of the hammer 12, that is, the distance from the hammer, in the case where the weight does not change much.
  • the motion path of 12 is L, lmm L 60mm, and L can be 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm or 60mm.
  • the first pulverization chamber 1 and the second pulverization chamber 2 can be respectively provided with a sieve plate support plate 13 which is coupled with the secondary pulverization chamber 14, and the sieve plate support plate 13 is opposite to the sieve plate 4 Supporting role.
  • one or more partitions can be provided in the large crushing chamber. For example, two partitions are arranged to divide the large crushing chamber into three small crushing chambers, and the three small crushing chambers are respectively equipped with a pressure screening frame 3, Sieve plate 4 and sieve plate Rack 5.
  • the hammer mill includes mainly: a screen frame 3, a sieve plate 4, a sieve frame 5, a partition plate 6, a motor 7, a base 8, and a joint.
  • the motor 7 mounted on the base 8 is coupled to the pulverizer rotor 10 via a coupling 9.
  • the rotor 10, the screen plate 4 and the sieve frame 5 together form a large crushing chamber.
  • a partition 6 is fixedly mounted on the base 8.
  • the partition 6 divides the large crushing chamber into a first crushing chamber 1 and a second crushing chamber 2, and the first crushing chamber 1 and the second crushing chamber 2 are respectively fitted with a press screen frame 3, a sieve plate 4, and a sieve plate holder 5.
  • the first pulverization chamber 1 and the second pulverization chamber 2 are respectively provided with sieve support plates 13, and the sieve support plates 13 are coupled to the secondary pulverization chamber 14 and support the sieve plates 4.
  • the secondary pulverization chamber 14 is located at the lower ends of the first pulverization chamber 1 and the second pulverization chamber 2.
  • the rotor shaft 11 of the rotor 10 is coupled to the coupling 9.
  • the rotor 10 is provided with a plurality of hammers 12, and an improved large spacer 16 is disposed between the adjacent two hammer plates of the rotor shaft 11.
  • a gas nozzle 17, which interrupts the circulation layer of the material, is installed in the secondary pulverization chamber 14, and the gas nozzle 17 extends through the entire pulverization chamber.
  • the improved large spacer 16 includes a spacer inner edge 16-3, a spacer outer edge 16-2, a spacer waist 16-1, and a shaft hole 16-4.
  • the thickness dl of the inner edge of the spacer 16-3 is larger than the thickness d2 of the outer edge of the spacer 16-2 and the thickness d3 of the spacer waist 16-1, gp: dl>d2, dl>d3.
  • the outer edge of the spacer sleeve 16-2, the inner edge of the spacer sleeve 16-3, and the spacer waist 16-1 are integrally connected, that is, the circular spacer body has a "work" shape along the radius profile.
  • the outer edge 16-2 of the spacer is disposed on the inner side of the mounting position of the hammer 12, and the diameter of the modified large spacer 16 is increased to the trajectory of the movement of the hammer 12, that is, the distance from the hammer, in the case where the weight does not change much.
  • the motion path of 12 is L, lmm L 60mm, and L can be 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm or 60mm.
  • the gas nozzle 17 is provided with at least one discharge air hole, and the air outlet hole faces upward.
  • the angle between the air outlet and the center of the gas nozzle should ensure that gas can enter the first crushing chamber 1 and the second crushing chamber 2.
  • two exhaust holes are used, and the angle between the air outlet and the center of the gas nozzle is 60 degrees to 120 degrees, specifically 60 degrees.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Description

锤片式粉碎机 技术领域
本发明涉及一种锤片式粉碎机， 尤其是对锤片式粉碎机筛板、 转子以及 粉碎室的改进。 背景技术
目前， 锤片式粉碎机转子主轴上的大隔套是一实心的圆套， 如附图 10所 示， 这种大隔套包括圆形隔套本体 15-1和轴孔 15-2， 轴孔 15-2设置在隔套本 体中心， 隔套本体厚薄一致， 大隔套通过轴孔 15-2安装在粉碎机转子主轴上 用来隔离转子的锤架板。 由于大隔套的外径与锤架板外径相差比较大， 转子 在高速运转过程中， 锤架板外周易发生振动， 从而影响转子运转的平稳性。
同时， 锤片式粉碎机品种繁多， 但在粉碎室的设计上， 大都采用一个粉 碎室。 随着粉碎机向大型化发展， 粉碎室宽度越来越宽。 现在鱼料、 虾料等 水产料的发展比较迅猛， 而生产水产料的的筛板孔径都比较小， 只有 Φ ΐηιηι, 甚至更小， 这样筛板的厚度很簿 （一般厚度与孔径相近）， 由此造成筛板中间 部位易内凹， 筛板中间部位极易和转子上的锤片等碰撞而损坏， 筛板部分损 坏， 必须更换整块筛板， 浪费严重； 另外粉碎室宽度越宽， 在粉碎过程中， 物料会沿轴向往两边跑， 导致整个轴向的锤片参与粉碎的负荷不均匀， 两端 的锤片磨损快且影响粉碎机的产量。 由于在粉碎时， 物料在锤片的带动下， 极易在筛板表面形成粉料环流层， 它跟随锤片作周向旋转， 阻碍粉料穿过筛 孔， 影响粉碎机的产量， 尤其在使用小孔径筛板时 （孔径 Φ 1.5mm以下）， 产 量降低尤为明显。 由于锤片或其它零部件磨损的不规则， 会导致在运转过程 中振动严重。 发明内容
本发明所要解决的技术问题是针对上述现有技术的不足， 而提供一种减 少锤架板振动， 提高转子运行平稳性的锤片式粉碎机。
为解决上述技术问题， 本发明采用如下技术方案： 一种锤片式粉碎机， 包括： 压筛架、 筛板、 筛板架、 电机、 机座、 联轴器、 转子、 转子轴、 锤片、 二次粉碎室， 安装在机座上的电机通过联轴器和粉碎机转子相联接， 转子、 筛板和筛板架共同组成粉碎室， 所述的二次粉碎室位于粉碎室的下端， 转子 的转子轴与联轴器相联， 转子上装有许多锤片， 在转子轴的相邻两锤架板之 间设置有大隔套， 该大隔套包括隔套内缘和隔套外缘， 所述的隔套内缘两侧 和隔套外缘两侧分别与相邻的锤架板紧密固定连接， 所述的隔套内缘设置在 转子轴上， 所述的隔套外缘设置在锤片安装位置的内侧， 并距锤片的运动轨 迹 L卜 60mm。
为了减少大隔套的质量， 所述的隔套内缘和隔套外缘采用隔套腰连接， 隔套内缘的厚度大于隔套外缘和隔套腰的厚度， 隔套外缘、 隔套内缘、 隔套 腰连接成一体， 即圆形隔套本体沿半径剖面是 "工"字形结构。
为了减小筛板变形和破坏， 在所述的粉碎室内设置有至少一个隔板， 通 过隔板将粉碎室分为至少 2 个小粉碎室， 在小粉碎室内也设置有相对应的压 筛架、 筛板、 筛板架。
在所述的小粉碎室内还设置有筛板支撑板。
由于在粉碎时， 物料在锤片的带动下， 极易在筛板表面形成粉料环流层， 它跟随锤片作周向旋转， 阻碍粉料穿过筛孔， 影响粉碎机的产量， 本发明在 二次粉碎室内装有至少一个气体喷管， 在气体喷管上设置有至少一排出气孔。 通过出气孔破坏粉料环流层， 从而提高出料的效率， 提高产量。
设置在气体喷管上的出气孔至少为两排， 且外端两排孔中心与气体喷管 的中心连线夹角为 120度以内。
与现有技术相比， 本发明具有如下有益效果：
1、 本发明在转子轴的相邻两锤架板之间设置有大隔套， 该大隔套包括隔 套内缘和隔套外缘， 隔套内缘两侧和隔套外缘两侧分别与相邻的锤架板紧密 固定连接， 隔套内缘设置在转子轴上， 隔套外缘设置在锤片安装位置的内侧， 并距锤片的运动轨迹 l〜60mm， 极为靠近锤片。 采用这种结构的大隔套后， 转子锤架板的内周和外周都与隔套紧密固定连接， 大隔套的隔套内缘不仅可 以起到隔离锤架板的作用， 还可以通过隔套外缘使大隔套和锤架板的外周形 成一个整体， 提高锤架板的刚度， 从而在转子运转时， 有效减小了锤架板的 振动， 提高了转子运行的稳定性。
2、 本发明的大隔套的截面形状为 "工"字型， 使得在增加隔套径向尺寸 的同时， 通过增大隔套轴向挖空的尺寸而减小或者不增加大隔套的质量， 不 增加成本， 也不增加机器运行的负荷。 隔套内缘的厚度大于隔套外缘和隔套 腰的厚度,进一步保证大隔套强度前提下， 减少隔套质量。
3、 本发明在粉碎室内设置有至少一个隔板， 将粉碎室分为至少两个小粉 碎室， 并在小粉碎室内设置筛板、 压筛架和筛板架， 减小了粉碎机中筛板的 宽度， 使筛板在工作中不易损坏， 延长筛板的使用寿命， 筛板若有损坏， 也 只需更换被损坏的一块， 有效降低筛板的损耗， 同时也提高了粉碎机粉碎效 率。 小粉碎室内设置的筛板支撑板进一步有效防止筛板中间部位内凹， 进而 避免筛板中间部位内凹而产生筛板与锤片碰撞， 防止筛板损坏， 提高筛板的 寿命。
4、 本发明在二次粉碎室内设置有破坏粉料环流层的气体喷管， 工作中由 于锤片与筛板之间的间隙不变， 粉料跟随锤片作周向旋转， 极易形成的粉料 环流层， 粉料环流层会阻碍粉料穿过筛孔， 影响粉碎机的产量， 尤其在使用 小孔径筛板时 （孔径 Φ 1.5mm以下）， 产量降低尤为明显。 当有足够压力的干 燥气体通过气体喷管从管面的小孔喷出时， 其可以破坏粉料环流层， 使得粉 料在离心力和外来气流压力的双重作用下快速通过筛孔， 从而提高粉碎机的
附图说明
下面结合附图 1、 2、 3、 4、 5、 6、 7、 8、 9、 10、 11对本发明作进一步说 图 1、 本实用新型的侧面粉碎室剖视图。
图 2、 本实用新型的正面粉碎室剖视图。
图 3是图 2的 A部放大示意图。
图 4、 筛板支撑板结构图。
图 5、 转子图 （装有旧大隔套）。
图 6、 转子图 （装有改进的大隔套）。
图 7是图 6的 B部放大示意图。
图 8、 改进的大隔套结构图。
图 9是图 8改进大隔套的三维图。
图 10、 现有技术大隔套的结构图。
图 11、 气体喷管结构示意图。
附图符号说明
1 第一粉碎室 2 第二粉碎室
3 压筛架 4 筛板
5 筛板架 6 隔板 7 电机 8 机座
9 联轴器 10 转子
11 转子轴 12 锤片
13 筛板支撑板 14 二次粉碎室
15 旧大隔套 15-1 隔套本体
15-2 轴孔 16 改进的大隔套
16-1 隔套腰 16-2 隔套外缘
16-3 隔套内缘 16-4 轴孔
17 气体喷管 具体实施方式：
如图 1-2、 7所示实施例 1中， 锤片式粉碎机， 主要包括： 压筛架 3、 筛 板 4、 筛板架 5、 电机 7、 机座 8、 联轴器 9、 转子 10、 转子轴 11、 锤片 12、 二次粉碎室 14和大隔套。 安装在机座 8上的电机 7通过联轴器 9和粉碎机转 子 10相联接。 转子 10、 筛板 4和筛板架 5共同组成大粉碎室， 二次粉碎室 14位于大粉碎室的下端， 筛板 4被压筛架 3紧压在筛板架 5上。 转子 10的转 子轴 11与联轴器 9相联， 转子 10上装有许多锤片 12。 在转子轴 11的相邻两 锤架板之间设置有大隔套， 大隔套包括隔套内缘和隔套外缘， 隔套内缘两侧 和隔套外缘两侧分别与相邻的锤架板紧密固定连接， 隔套内缘设置在转子轴 11上， 隔套外缘设置在锤片 12安装位置的内侧。 在重量变化不大的情况下， 大隔套的直径加大至锤片 12运动轨迹之外， 即距锤片 12 的运动轨迹为 L， lmm L 60mm。 采用这种结构的大隔套后， 转子锤架板的内周和外周都与 隔套紧密固定连接， 大隔套的隔套内缘不仅可以起到隔离锤架板的作用， 还 可以通过隔套外缘使大隔套和锤架板的外周形成一个整体， 提高锤架板的刚 度， 从而在转子运转时， 有效减小了锤架板的振动， 提高了转子运行的稳定 性。
如图 1-2、 6-9所示的实施例 2中， 锤片式粉碎机， 主要包括： 压筛架 3、 筛板 4、 筛板架 5、 电机 7、 机座 8、 联轴器 9、 转子 10、 转子轴 11、 锤片 12、 二次粉碎室 14和改进的大隔套 16。安装在机座 8上的电机 7通过联轴器 9和 粉碎机转子 10相联接。 转子 10、 筛板 4和筛板架 5共同组成大粉碎室， 二次 粉碎室 14位于大粉碎室的下端， 筛板 4被压筛架 3紧压在筛板架 5上。 转子 10的转子轴 11与联轴器 9相联， 转子 10上装有许多锤片 12， 在转子轴 11 的相邻两锤架板之间设置有改进的大隔套 16。改进的大隔套 16包括隔套内缘 16-3、 隔套外缘 16-2、 隔套腰 16-1和轴孔 16-4。 隔套内缘 16-3的厚度 dl大 于隔套外缘 16-2的厚度 d2和隔套腰 16-1的厚度 d3， BP : dl>d2， dl>d3。 隔 套外缘 16-2、 隔套内缘 16-3、 隔套腰 16-1连接成一体， 即圆形隔套本体沿半 径剖面是 "工"字形结构。 隔套外缘 16-2设置在锤片 12安装位置的内侧， 在 重量变化不大的情况下， 改进的大隔套 16的直径加大至锤片 12运动轨迹之 夕卜， 即距锤片 12的运动轨迹为 L， lmm L 60mm， L能够采用 5mm， 10mm, 15mm, 20mm, 25mm, 30mm, 35mm,40mm,45mm,50mm,55mm或 60mm等。 采用这种结构的大隔套后， 在取得实施例 1 有益效果的基础上， 能进一步使 得在增加隔套径向尺寸的同时， 增大隔套轴向挖空的尺寸从而减小或者不增 加大隔套的质量， 不增加成本， 也不增加机器运行的负荷。 隔套内缘的厚度 大于隔套外缘和隔套腰的厚度,进一步保证大隔套强度前提下，减少隔套质量。
如图 1-2、 4、 6-9所示的实施例 3中， 锤片式粉碎机， 主要包括： 压筛架 3、 筛板 4、 筛板架 5、 隔板 6、 电机 7、 机座 8、 联轴器 9、 转子 10、 转子轴 11、 锤片 12、 二次粉碎室 14和改进的大隔套 16。 安装在机座 8上的电机 7 通过联轴器 9和粉碎机转子 10相联接。 转子 10、筛板 4和筛板架 5共同组成 大粉碎室。在机座 8上固定安装有隔板 6。 隔板 6将大粉碎室分为第一粉碎室 1和第二粉碎室 2， 第一粉碎室 1和第二粉碎室 2内分别安装有压筛架 3、 筛 板 4和筛板架 5。 二次粉碎室 14位于第一粉碎室 1和第二粉碎室 2的下端。 转子 10的转子轴 11与联轴器 9相联。 转子 10上装有许多锤片 12， 在转子轴 11的相邻两锤架板之间设置有改进的大隔套 16。改进的大隔套 16包括隔套内 缘 16-3、 隔套外缘 16-2、 隔套腰 16-1和轴孔 16-4。 隔套内缘 16-3的厚度 dl 大于隔套外缘 16-2的厚度 d2和隔套腰 16-1的厚度 d3， BP : dl>d2， dl>d3。 隔套外缘 16-2、 隔套内缘 16-3、 隔套腰 16-1连接成一体， 即圆形隔套本体沿 半径剖面是 "工"字形结构。 隔套外缘 16-2设置在锤片 12安装位置的内侧， 在重量变化不大的情况下， 改进的大隔套 16的直径加大至锤片 12运动轨迹 之夕卜， 即距锤片 12的运动轨迹为 L， lmm L 60mm， L能够采用 5mm， 10mm, 15mm, 20mm, 25mm, 30mm, 35mm,40mm,45mm,50mm,55mm或 60mm等。 在此基础上， 第一粉碎室 1和第二粉碎室 2内能够分别设有筛板支撑板 13， 筛板支撑板 13与二次粉碎室 14联接， 筛板支撑板 13对筛板 4起支撑作用。 除此以外， 大粉碎室中还能够设有 1块以上的隔板， 例如： 设 2块隔板将大 粉碎室分成三个小粉碎室， 三个小粉碎室分别安装有压筛架 3、筛板 4和筛板 架 5。
如图 1-9、 11所示的实施例 4中， 锤片式粉碎机， 主要包括： 压筛架 3、 筛板 4、 筛板架 5、 隔板 6、 电机 7、 机座 8、 联轴器 9、 转子 10、 转子轴 11、 锤片 12、 筛板支撑板 13、 二次粉碎室 14、 改进的大隔套 16和气体喷管 17。 安装在机座 8上的电机 7通过联轴器 9和粉碎机转子 10相联接。 转子 10、筛 板 4和筛板架 5共同组成大粉碎室。在机座 8上固定安装有隔板 6。 隔板 6将 大粉碎室分为第一粉碎室 1和第二粉碎室 2，第一粉碎室 1和第二粉碎室 2内 分别安装有压筛架 3、 筛板 4和筛板架 5。 第一粉碎室 1和第二粉碎室 2内分 别设有筛板支撑板 13， 筛板支撑板 13与二次粉碎室 14联接并对筛板 4起支 撑作用。 二次粉碎室 14位于第一粉碎室 1和第二粉碎室 2的下端。 转子 10 的转子轴 11与联轴器 9相联。 转子 10上装有许多锤片 12， 在转子轴 11的相 邻两锤架板之间设置有改进的大隔套 16。在二次粉碎室 14内装有破坏物料环 流层的气体喷管 17， 气体喷管 17贯穿整个粉碎室。 改进的大隔套 16包括隔 套内缘 16-3、 隔套外缘 16-2、 隔套腰 16-1和轴孔 16-4。 隔套内缘 16-3的厚度 dl大于隔套外缘 16-2的厚度 d2和隔套腰 16-1的厚度 d3， gp : dl> d2， dl>d3。 隔套外缘 16-2、 隔套内缘 16-3、 隔套腰 16-1连接成一体， 即圆形隔套本体沿 半径剖面是 "工"字形结构。 隔套外缘 16-2设置在锤片 12安装位置的内侧， 在重量变化不大的情况下， 改进的大隔套 16的直径加大至锤片 12运动轨迹 之夕卜， 即距锤片 12的运动轨迹为 L， lmm L 60mm， L能够采用 5mm， 10mm, 15mm, 20mm, 25mm, 30mm, 35mm,40mm,45mm,50mm,55mm或 60mm等。 在此基础上， 气体喷管 17上设置有至少一排出气孔， 出气孔向朝上。 气体喷 管 17上设置有两排以上出气孔时， 出气孔与气体喷管中心的夹角应保证气体 能够进入第一粉碎室 1和第二粉碎室 2。 在本实施例中： 采用两排出气孔， 出 气孔与气体喷管中心的夹角采用 60度〜 120度， 具体是 60度。

Claims

权 利 要 求 书
1、 一种锤片式粉碎机， 包括： 压筛架 （3 )、 筛板 （4)、 筛板架 （5 )、 电 机 （7)、 机座 （8)、 联轴器 （9)、 转子 （10)、 转子轴 （11 )、 锤片 （12)、 二 次粉碎室 （14)， 安装在机座 （8 ) 上的电机 （7 ) 通过联轴器 （9 ) 和粉碎机 转子 （10) 相联接， 转子 （10)、 筛板 （4 ) 和筛板架 （5 ) 共同组成粉碎室， 所述的二次粉碎室 （14)位于粉碎室的下端， 转子（10) 的转子轴 （11 ) 与联 轴器（9)相联， 转子 （10 ) 上装有许多锤片 （12)， 在转子轴 （11 ) 的相邻两 锤架板之间设置有大隔套 （16)， 其特征是： 大隔套 （16) 包括隔套内缘和隔 套外缘， 所述的隔套内缘两侧和隔套外缘两侧分别与相邻的锤架板紧密固定 连接，所述的隔套内缘设置在转子轴（11 )上，所述的隔套外缘设置在锤片（12) 安装位置的内侧， 并距锤片 （12) 的运动轨迹 （L) l〜60mm。
2、 根据权利要求 1所述的锤片式粉碎机， 其特征在于： 所述的隔套内缘 和隔套外缘采用隔套腰连接， 隔套内缘 (16-3)的厚度 (dl)大于隔套外缘 (16-2) 和隔套腰 (16-1)的厚度（d2、d3 )，隔套外缘 (16-2)、隔套内缘 (16-3)、隔套腰 (16-1) 连接成一体， 即圆形隔套本体沿半径剖面是 "工"字形结构。
3、 根据权利要求 1或 2所述的锤片式粉碎机， 其特征在于： 在所述的粉 碎室内设置有至少一个隔板 （6)， 所述的粉碎室被所述的隔板 （6) 分为至少 2个小粉碎室， 在所述的小粉碎室内能设置有相对应的压筛架 （3 )、 筛板 （4) 和筛板架 (5 )。
4、 根据权利要求 3所述的锤片式粉碎机， 其特征在于： 在所述的小粉碎 室内还设置有筛板支撑板 (13)。
5、 根据权利要求 1或 2所述的锤片式粉碎机， 其特征在于： 在所述的二 次粉碎室 （14) 内装有至少一个气体喷管 （17)， 在气体喷管 （17 ) 上设置有 至少一排出气孔。
6、 根据权利要求 5所述的锤片式粉碎机， 其特征在于： 设置在气体喷管 ( 17 ) 上的出气孔至少为两排， 且外端两排孔中心与气体喷管 （17 ) 的中心 连线夹角为 60〜120度。
7、 根据权利要求 3所述的锤片式粉碎机， 其特征在于： 在所述的二次粉 碎室 （14) 内装有至少一个气体喷管 （17)， 在气体喷管 （17) 上设置有至少 一排出气孔。
8、 根据权利要求 4所述的锤片式粉碎机， 其特征在于： 在所述的二次粉 碎室 （14) 内装有至少一个气体喷管 （17)， 在气体喷管 （17) 上设置有至少 一排出气孔。
9、 根据权利要求 7所述的锤片式粉碎机， 其特征在于： 设置在气体喷管 ( 17) 上的出气孔至少为两排， 且外端两排孔中心与气体喷管 （17) 的中心 连线夹角为 60〜120度。
10、 根据权利要求 8 所述的锤片式粉碎机， 其特征在于： 设置在气体喷 管 （17) 上的出气孔至少为两排， 且外端两排孔中心与气体喷管 （17) 的中 心连线夹角为 60〜120度。
PCT/CN2009/070876 2008-11-26 2009-03-18 锤片式粉碎机 WO2010060285A1 (zh)

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