A toothed blade for a grinding mill

Abstract

This utility model relates to the technical field of toothed blades for grinding mills, and discloses a toothed blade for a grinding mill, comprising: a main shaft, a driven shaft, blades, a limiting washer, and a nut. The driven shaft is inserted into the upper end of the main shaft. The blades and the limiting washer are slidably disposed outside the driven shaft. The nut is threadedly connected to the upper end of the driven shaft. An assembly plate is sleeved on the outside of the driven shaft, and clamping arms are connected to both sides of the bottom of the assembly plate. A chuck is slidably connected to the outside of the main shaft. A spring is assembled at the bottom of the driven shaft, and the spring is connected to the inner bottom of the main shaft. This toothed blade for a grinding mill eliminates the need for the traditional method of fixing the blades to restrict the main shaft and driven shaft, preventing damage to the blades during loading and unloading. Furthermore, the top of the chuck has multiple sets of slots to prevent the top of the chuck from being blocked by material, thus avoiding loss of the effect of cooperating with the clamping arms to restrict the main shaft and driven shaft.

Description

Technical Field

[0001] This utility model relates to the technical field of toothed blades for grinding mills, specifically a toothed blade for grinding mills. Background Technology

[0002] The working principle of a grinding mill is mainly to crush lumpy or granular raw materials into the required fineness and shape through mechanical action, such as friction, impact, shearing, and extrusion. Specifically, the raw material first enters the grinding mill through the feed inlet, and then is subjected to intense grinding and extrusion under the action of the grinding disc and grinding rollers (or other similar grinding parts), and is finally ground into fine powder.

[0003] In the traditional loading and unloading process of grinding mill toothed blades, when it is necessary to disassemble or replace the blades, the main shaft and driven shaft tend to rotate as the nut is unscrewed, making the disassembly work difficult and time-consuming. This not only reduces work efficiency but also increases operational complexity and inconveniences workers. Traditional loading and unloading methods usually restrict the rotation of the main shaft and driven shaft by fixing the blades, which may cause damage to the blades themselves during operation, such as scratches and deformation, thus affecting the performance and service life of the blades. Due to the above problems, traditional loading and unloading methods often require more time and manpower, which not only increases costs but may also accelerate equipment wear and aging due to frequent loading and unloading operations. To address this, we propose a toothed blade design for grinding mills. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a toothed blade for a grinding mill, which solves the technical problem that the traditional loading and unloading method usually restricts the rotation of the main shaft and driven shaft by fixing the blade, which may cause damage to the blade itself during operation, such as scratches and deformation, thereby affecting the performance and service life of the blade.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a toothed blade for a grinding mill, comprising: a main shaft, a driven shaft, blades, a limiting washer, and a nut. The driven shaft is inserted into the upper end of the main shaft. The blades and the limiting washer are slidably disposed outside the driven shaft. The nut is threadedly connected to the upper end of the driven shaft. An assembly plate is sleeved on the outside of the driven shaft, and clamping arms are connected to both sides of the bottom of the assembly plate. A chuck is slidably connected to the outside of the main shaft. A spring is assembled at the bottom of the driven shaft, and the spring is connected to the inner bottom of the main shaft.

[0008] Preferably, the top of the chuck is provided with evenly distributed slots, and the slots fit into the chuck arm.

[0009] Preferably, the bottom of the nut is connected to a baffle plate, and the bottom of the baffle plate is connected to the upper end face of the limiting pad. The baffle plate can completely seal the limiting pad with the nut, preventing material from entering the connection between the nut and the limiting pad.

[0010] Preferably, the inner cavity of the spindle is provided with a hexagonal groove, and the driven shaft is inserted into the hexagonal groove. The hexagonal groove facilitates the insertion of the driven shaft into the spindle and its rotation with the spindle.

[0011] Preferably, the bottom of the assembly plate is connected to a rubber sleeve, and the bottom of the rubber sleeve is connected to a support plate. The support plate is sleeved on the outside of the main shaft. The cooperation between the support plate and the rubber sleeve prevents material from entering the connection between the driven shaft and the main shaft, which would prevent the driven shaft from moving normally.

[0012] Preferably, there are at least two sets of blades, which are staggered and mounted on the outside of the driven shaft, and the blades can perform crushing operations on materials.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention provides a toothed blade for a grinding mill, which has the following advantages:

[0015] The toothed blade for the grinding mill uses an added assembly plate, locking arm, and chuck to quickly lock the positions of the main shaft and driven shaft during loading and unloading. This prevents the main shaft and driven shaft from rotating along with the nut when it is unscrewed, thus avoiding interference with the disassembly of the blade. It also avoids the traditional method of restricting the main shaft and driven shaft by fixing the blade, thereby preventing damage to the blade during loading and unloading. Attached Figure Description

[0016] Figure 1 This is an assembly diagram of the present invention;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is a front view of the present utility model;

[0019] Figure 4 This is a partial sectional view of the main shaft of this utility model.

[0020] In the diagram: 1. Spindle; 11. Spring; 2. Driven shaft; 3. Assembly plate; 31. Rubber sleeve; 32. Support plate; 4. Clamping arm; 5. Blade; 6. Limiting pad; 7. Nut; 71. Stop plate; 8. Chuck. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides a technical solution, please refer to Figure 1 and Figure 2 A toothed blade for a grinding mill includes: a main shaft 1, a driven shaft 2, a blade 5, a limiting pad 6, and a nut 7. The driven shaft 2 is inserted into the upper end of the main shaft 1. The blade 5 and the limiting pad 6 are slidably disposed on the outside of the driven shaft 2. The nut 7 is threadedly connected to the upper end of the driven shaft 2. An assembly plate 3 is sleeved on the outside of the driven shaft 2, and clamping arms 4 are connected to both sides of the bottom of the assembly plate 3. A chuck 8 is slidably connected to the outside of the main shaft 1. A spring 11 is assembled at the bottom of the driven shaft 2, and the spring 11 is connected to the inner bottom of the main shaft 1.

[0023] Please see Figure 3 and Figure 4 The driven shaft 2 can be inserted into the main shaft 1 and can slide up and down. The assembly plate 3 can move together with the driven shaft 2. The clamping arm 4 can be inserted into the chuck 8 to lock the positions of the main shaft 1 and the driven shaft 2. The blade 5 can crush the material. The cooperation of the nut 7 and the limiting pad 6 can fix the position of the blade 5.

[0024] The top of the chuck 8 is evenly provided with slots, and the slots fit into the chuck arm 4. The bottom of the nut 7 is connected to the baffle 71, and the bottom of the baffle 71 is connected to the upper end face of the limiting pad 6. The baffle 71 can completely seal the limiting pad 6 with the nut 7, preventing material from entering the connection between the nut 7 and the limiting pad 6.

[0025] The inner cavity of the main shaft 1 is provided with a hexagonal groove, and the driven shaft 2 is inserted into the hexagonal groove. The hexagonal groove facilitates the insertion of the driven shaft 2 into the main shaft 1 and allows it to rotate with the main shaft 1. The bottom of the mounting plate 3 is connected to a rubber sleeve 31, and the bottom of the rubber sleeve 31 is connected to a support plate 32. The support plate 32 is fitted onto the outside of the main shaft 1. The cooperation between the support plate 32 and the rubber sleeve 31 prevents material from entering the connection between the driven shaft 2 and the main shaft 1, which would prevent the driven shaft 2 from moving normally. There are at least two sets of blades 5, which are staggered and assembled on the outside of the driven shaft 2. The blades 5 can perform crushing operations on materials.

[0026] This solution first fixes the main shaft 1 to the output shaft inside the grinding mill, fixes the chuck 8 to the inner cavity of the grinding mill, puts the blade 5 on the outside of the driven shaft 2, puts the limiting pad 6 on the top of the driven shaft 2, threadedly connects the nut 7 to the top of the driven shaft 2, puts the sleeve on the outside of the nut 7 and presses it down, so that the clamping arm 4 on the outside of the driven shaft 2 is inserted into the inside of the chuck 8, thereby limiting the position of the driven shaft 2 and the main shaft 1, preventing them from rotating during the rotation of the nut 7. Then, the nut 7 is installed and removed by using the sleeve, thereby completing the installation and removal of the blade 5.

[0027] When loading and unloading the blade 5, the added assembly plate 3, clamping arm 4, and chuck 8 quickly lock the positions of the main shaft 1 and driven shaft 2, preventing the main shaft 1 and driven shaft 2 from rotating together when the nut 7 is unscrewed, thus affecting the disassembly of the blade 5 by the operator. At the same time, it eliminates the need to restrict the main shaft 1 and driven shaft 2 by fixing the blade 5 in the traditional way, which would cause the blade 5 to be damaged during loading and unloading. In addition, the top of the chuck 8 has multiple sets of slots to prevent the top of the chuck 8 from being blocked by materials, thus preventing it from losing its effect of cooperating with the clamping arm 4 to restrict the main shaft 1 and driven shaft 2.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooth plate cutter for a flour mill, comprising: The assembly comprises a main shaft, a driven shaft, a blade, a limiting washer, and a nut. The driven shaft is inserted into the upper end of the main shaft. The blade and the limiting washer are slidably disposed outside the driven shaft. The nut is threadedly connected to the upper end of the driven shaft. The driven shaft is characterized by having an assembly plate sleeved on its outer side, with chuck arms connected to both sides of the bottom of the assembly plate. The main shaft is slidably connected to a chuck. The driven shaft is fitted with a spring at its bottom, and the spring is connected to the inner bottom of the main shaft.

2. The toothed blade for a grinding mill according to claim 1, characterized in that: The top of the chuck is evenly provided with slots, and the slots fit into the chuck arm.

3. The toothed blade for a grinding mill according to claim 1, characterized in that: The bottom of the assembly plate is connected to a rubber sleeve, and the bottom of the rubber sleeve is connected to a support plate, which is sleeved on the outside of the spindle.

4. A toothed blade for a grinding mill according to claim 1, characterized in that: The bottom of the nut is connected to a retaining plate, and the bottom of the retaining plate is connected to the upper surface of the limiting pad.

5. A toothed blade for a grinding mill according to claim 1, characterized in that: The spindle has a hexagonal groove in its inner cavity, and the driven shaft is inserted into the hexagonal groove.

6. A toothed blade for a grinding mill according to claim 1, characterized in that: The blades are in at least two sets and are staggered and mounted on the outside of the driven shaft.

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