A rotor of a hammer mill and a hammer mill

Abstract

The present invention discloses a rotor of a hammer mill and a hammer mill, which includes a central shaft and a plurality of hammer blade mounting plates vertically connected to the central shaft. The hammer blade mounting plates are provided with a plurality of mounting plate through holes for passing through the hammer blade pins. The invention further includes a plurality of spaced support assemblies. Each spaced support assembly includes at least two sets of support side plates. The support side plates are provided with pin shaft through holes matching the mounting plate through holes. At least two sets of support side plates are arranged end to end between the hammer blade mounting plates. A retaining plate is provided with a retaining plate notch for placing the hammer blade. The support side plates, the hammer blade mounting plates, and the hammer blades are connected by pins, and the pins pass through the mounting plate through holes, the pin shaft through holes, and the hammer blades. Without damaging the existing hammer blade mounting plates, the present invention fixes the hammer blades by forming a complete circle with two spaced support assemblies. When disassembling and assembling, there is no need for complex marking and removing the hammer knife spacer sleeves, which improves the installation efficiency of the hammer blades. The retaining plate notches at multiple positions can meet the installation requirements of various types of hammer blades.

Description

Technical Field

[0001] The present invention relates to a rotor of a hammer mill and a hammer mill, belonging to the technical field of hammer mills. Background Art

[0002] The rotor is a key component of a hammer mill and needs to be replaced when the working object changes. At the same time, the hammer is also a vulnerable component, so it is often replaced in practical applications. Figure 1 The rotor of the hammer mill in the prior art includes a central shaft and a plurality of hammer carrier plates vertically connected to the central shaft. Through holes are provided on the hammer carrier plates. When installing the hammer on the rotor of the hammer mill, the pin shaft is passed through the through holes of the carrier plates. The axial distance between the hammers or between the hammer and the hammer carrier plate is adjusted by a spacer sleeve sleeved on the pin shaft. When it is necessary to replace or adjust the position of the hammer, the pin shaft needs to be pulled out, which is a large amount of work, and the original order of the pin shaft spacer sleeves needs to be accurately marked.

[0003] Due to the above defects of the cylindrical spacer sleeve, there are also other ways of hammer limiting devices in the prior art to limit and adjust the spacing of the hammers. For example, the patent with the application number "201811305171X" discloses a limiting device for conveniently replacing hammers of a hammer mill. The patent uses a limiting body to control the hammer spacing. The limiting body is composed of several limiting rod units, and each limiting rod unit has a plurality of non-tail end limiting shafts, a tail end limiting shaft, and multiple pairs of limiting disks. On the outer surface of each non-tail end limiting shaft and the outer surface of the tail end limiting shaft, there are several pairs of limiting disks, and the hammers are controlled through the cavities between the limiting disks. However, the installation of the limiting body requires changing the original structure of the hammer carrier plate, and after the change, the traditional pin shaft spacer sleeve cannot be used to fix the hammer again. In addition, in the prior art, there is also a way to fix the hammer by using a hammer carrier. The hammer carrier is provided with a groove for placing the hammer, and the groove can limit the hammer from sliding along the pin shaft. However, the fixing method is the same as that of the limiting body, and the installation of the hammer carrier also requires changing the original structure of the hammer carrier plate, and such a change is also irreversible. On the other hand, in order to make the standard form hammer mill adapt to these changes, huge human and financial costs need to be paid. At the same time, once the above changes are made to the existing hammer mill, it is very difficult to change back to the conventional hammer replacement form using the cylindrical spacer sleeve. Summary of the Invention

[0004] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a rotor of a crusher and a hammer mill that can realize the rapid replacement of hammers on the premise of ensuring that the original mechanical structure is not damaged.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A rotor of a hammer mill includes a central shaft and a plurality of hammer blade mounting plates vertically connected to the central shaft. The hammer blade mounting plates are provided with a plurality of mounting plate through holes for passing through the hammer blade pins. It is characterized in that it further includes a plurality of spaced support assemblies. The spaced support assemblies include at least two groups of support side plates. The support side plates are provided with pin through holes matching the mounting plate through holes. At least two groups of support side plates are arranged end to end between the hammer blade mounting plates. The retaining plate is provided with a retaining plate notch for placing the hammer blades. The support side plates, the hammer blade mounting plates, and the hammer blades are connected by pins. The pins pass through the mounting plate through holes, the pin through holes, and the hammer blades.

[0007] Preferably, for the rotor of the hammer mill described above, each group of support side plates includes two parallel support side plates, and the retaining plate is arranged between the two support side plates.

[0008] Preferably, for the rotor of the hammer mill described above, the pin is further provided with a locking device for preventing axial movement of the pin.

[0009] Preferably, for the rotor of the hammer mill described above, the locking device includes a first locking collar and a second locking collar welded to the support side plate.

[0010] Preferably, for the rotor of the hammer mill described above, there are multiple types of retaining plates, and the distances of the retaining plate notches of the multiple retaining plates from the support side plates are different.

[0011] Preferably, for the rotor of the hammer mill described above, the end of the support side plate is provided with a support side plate connecting plate connected laterally, and the support side plate connecting plate is also provided with a through hole for connecting the pin.

[0012] Preferably, for the rotor of the hammer mill described above, the connection method between the retaining plate and the support side plate is welding.

[0013] Preferably, for the rotor of the hammer mill described above, the outer edge of the support side plate is further provided with a side plate notch for placing the hammer blades.

[0014] Preferably, for the rotor of the hammer mill described above, the spaced support assembly includes two groups of support side plates.

[0015] A hammer mill includes the rotor of the hammer mill according to any one of the above.

[0016] The beneficial effects achieved by the present invention:

[0017] 1. For the spaced support assembly of the present invention, the installation and disassembly of the hammer blade mounting plate in the prior art can be achieved by relying on pins and locking devices. The position of the retaining plate notch on the spaced support assembly determines the installation position of the hammer blades. Therefore, only by ensuring the correct installation of the spaced support assembly can the correct installation of the hammer blades be achieved. Since two spaced support assemblies can form a complete circle, the installation of the spaced support assembly is relatively simple and does not require complex marking, improving the installation efficiency of the hammer blades.

[0018] 2. There are various retaining plates in the present invention. The distances between the retaining plate notches of the various retaining plates relative to the support side plates are different, which can meet the installation requirements of various types of hammer pieces. At the same time, it can also ensure to a certain extent that the axial distribution of the hammer pieces is more uniform and the crushing effect is better.

[0019] 3. The present invention does not damage the existing hammer piece mounting plate. Therefore, when it is not necessary to fix the hammer pieces with the spacer support assembly, the traditional cylindrical spacer form can still be used. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural diagram of the rotor of a hammer mill in the prior art;

[0021] Figure 2 is a structural diagram of the rotor of the hammer mill of the present invention;

[0022] Figure 3 is a structural diagram of two groups of support side plates of the present invention;

[0023] Figure 4 is a structural diagram of a group of support side plates of the present invention (hiding the second locking collar);

[0024] Figure 5 is a schematic connection diagram of two support side plates of the present invention;

[0025] The meanings of the reference numerals in the drawings: 1 - hammer piece mounting plate; 2 - pin shaft; 3 - spacer support assembly; 4 - first locking collar; 5 - retaining plate; 11 - through hole in the mounting plate; 51 - retaining plate notch; 6 - support side plate; 61 - second locking collar; 62 - side plate notch; 63 - support side plate connecting plate; 64 - pin shaft through hole. DETAILED DESCRIPTION OF THE INVENTION

[0026] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and should not be used to limit the protection scope of the present invention.

[0027] As Figures 2 to 5 shown: This embodiment discloses a rotor of a hammer mill, including a central shaft and a plurality of hammer piece mounting plates 1 vertically connected to the central shaft. The hammer piece mounting plates 1 are provided with a plurality of through holes 11 in the mounting plates for passing through the pin shafts of the hammer pieces.

[0028] This embodiment also includes a plurality of spacer support assemblies 3. The spacer support assemblies 3 include at least two groups of support side plates 6. The support side plates 6 are provided with pin shaft through holes 64 matching the through holes 11 in the mounting plates. At least two groups of support side plates 6 are arranged end to end between the hammer piece mounting plates 1. The retaining plate 5 is provided with a retaining plate notch 51 for placing the hammer pieces. The support side plates 6, the hammer piece mounting plates 1, and the hammer pieces are connected by a pin shaft 2. The pin shaft 2 passes through the through hole 11 in the mounting plate, the pin shaft through hole 64, and the hammer piece.

[0029] Each group of bracket side plates 6 includes two bracket side plates 6 arranged in parallel, and the baffle 5 is arranged between the two bracket side plates 6. The connection method between the two is preferably welding.

[0030] The pin shaft 2 is also provided with a locking device for preventing the pin shaft 2 from axial movement. Specifically, the locking device includes a locking collar 4 and a locking collar 61 welded to the bracket side plate 6. The locking methods of the locking collar 4 and the locking collar 61 are different. The former is to reduce the inner diameter by tightening the bolts, and then to achieve a tight fit with the pin shaft 2; the latter is to use a top screw to support the side of the pin shaft 2. It should be noted that each pin shaft 2 needs to be equipped with a locking device, and the number can be determined according to actual conditions.

[0031] There are multiple types of baffles 5 in this embodiment, and the distances of the baffle notches 51 of the multiple baffles 5 relative to the bracket side plates 6 are different. This is because the position of the baffle notches 51 is the position of the corresponding hammers. In order to achieve a better crushing effect, the hammers are usually arranged in layers along the central axis of the rotor, that is, the distances of the hammers in the same group of bracket side plates 6 relative to the bracket side plates 6 are different. For example, there are six hammers in a group of bracket side plates 6, and the distances of these six hammers relative to the bracket side plates 6 can be three. The hammers with three different distances are alternately arranged, so that the rotor can achieve a better crushing effect.

[0032] See also Figure 3 : A side plate notch 62 for placing hammers is also provided on the outer edge of the bracket side plate 6. The side plate notch 62 is used to accommodate the hammers installed at this position, so that the distribution of the hammers can be more uniform; on the other hand, the hammers installed in the baffle notches 51 at different positions can also adapt to light loads, medium loads, heavy loads, and customized hammer arrangements.

[0033] The spacing bracket assembly 3 preferably includes two groups of bracket side plates 6, each group of bracket side plates 6 is fan-shaped as a whole and has an arc greater than 180 degrees (because the ends of the opposite bracket side plates 6 have overlapping parts). The connection method of the two opposite bracket side plates 6 is:

[0034] See also Figure 5 The end of the bracket side plate 6 is provided with a bracket side plate connecting plate 63 for side connection, and the bracket side plate connecting plate 63 is also provided with a through hole for connecting the pin shaft 2. The side connection here means that the bracket side plate connecting plate 63 and the bracket side plate 6 are offset by the thickness of the bracket side plate 6, so that the two bracket side plates 6 can be in the same plane.

[0035] During use, when the hammer blades need to be replaced, loosen the locking collar I - 4 and the locking collar II - 61, pull out the pin shaft - 6, and the hammer blades can be directly removed. Place the new hammer blades inside the notch - 62 of the side plate and align their mounting holes, pin shaft through - holes - 64, and the through - holes of the support plate - 11. Insert the pin shaft - 2 and lock the locking device to complete the installation of the hammer blades. Since the axial position of the hammer blades is determined by the position passing through the notch - 51 of the retaining plate, during installation, it is only necessary to ensure the correct position of the spacer support assembly - 3.

[0036] Since in practical applications, multiple comminution modes are required, usually, there are two types of pin shaft holes on the hammer - knife support plate - 1. One set is for fine comminution, and the other set is for coarse comminution. If this crusher is used for fine comminution, then the pin shaft holes used for coarse comminution can be used to fix the support plate to the crusher rotor. Similarly, if this crusher is used for coarse comminution, then the pin shaft holes used for fine comminution can be used to fix the support plate to the crusher rotor.

[0037] Since the installation of the spacer support assembly in this embodiment does not damage the original hammer - knife support plate - 1, when the spacer support assembly of this embodiment is not needed, it can be directly disassembled by pulling out the pin shaft - 2, and the traditional cylindrical spacer form can still be used.

[0038] This embodiment also discloses a hammer - blade crusher, which includes the hammer - blade crusher rotor described above in this embodiment.

[0039] The above - mentioned are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A rotor of a hammer mill, comprising a central shaft and a plurality of hammer plate frames (1) vertically connected to the central shaft. The hammer plate frames (1) are provided with a plurality of plate through holes (11) for passing through the hammer pin shafts. It is characterized in that it further comprises a plurality of spaced support assemblies (3). The spaced support assemblies (3) include at least two groups of support side plates (6). The support side plates (6) are provided with pin through holes (64) matching the plate through holes (11). The at least two groups of support side plates (6) are arranged end to end between the hammer plate frames (1). Each group of support side plates (6) includes two parallel support side plates (6). A retaining plate (5) is arranged between the two support side plates (6). The retaining plate (5) is provided with a retaining plate notch (51) for placing the hammer. The support side plates (6), the hammer plate frames (1), and the hammers are connected by a pin (2). The pin (2) passes through the plate through hole (11), the pin through hole (64), and the hammer. The pin (2) is further provided with a locking device for preventing the axial movement of the pin (2). The locking device includes a first locking collar (4) and a second locking collar (61) welded to the support side plate (6). There are various types of the retaining plates (5), and the distances of the retaining plate notches (51) of the various retaining plates (5) from the support side plates (6) are different.

2. The rotor of a hammer mill according to claim 1, It is characterized in that the end of the support side plate (6) is provided with a support side plate connecting plate (63) connected to the side. The support side plate connecting plate (63) is also provided with a through hole for connecting the pin (2).

3. The rotor of a hammer mill according to claim 1, It is characterized in that the connection mode between the retaining plate (5) and the support side plate (6) is welding.

4. The rotor of a hammer mill according to claim 1, It is characterized in that the outer edge of the support side plate (6) is further provided with a side plate notch (62) for placing the hammer.

5. The rotor of a hammer mill according to claim 1, It is characterized in that the spaced support assembly (3) includes two groups of support side plates (6).

6. A hammer mill, It is characterized in that it includes the rotor of a hammer mill according to any one of claims 1 to 5.

Images