Powder cutting tool assembly and pulverizing device

Abstract

The utility model discloses a kind of powder cutting tool assemblies and pulverizing devices, powder cutting tool assembly includes: tool shaft, blade group and locking mechanism, the outer circumferential surface of tool shaft is provided with limit convex ring and thread section along axial direction interval, guiding groove is equipped on the outer circumferential surface of the tool shaft between the limit convex ring and thread section;The blade group is sleeved on the tool shaft, between the limit convex ring and the thread section, the guiding groove is suitable for driving the blade group synchronous rotation, one end of the blade group is abutted to the limit convex ring;The locking mechanism is suitable for being connected in screw thread in the thread section, and abutted to the other end of the blade group, to axially clamp the blade group between the limit convex ring and the locking mechanism.The utility model can realize the reliable locking of blade, facilitate assembly maintenance, improve equipment running stability.

Description

Technical Field

[0001] This utility model relates to a powder cutting tool assembly and a pulverizing device. Background Technology

[0002] Currently, crushing devices are widely used in material crushing and data processing. The structural design of their core component, the pulverizing blade assembly, directly affects the equipment's working efficiency and service life. Pulverizing blade assemblies typically employ a structure where blades are fixedly mounted on a cutter shaft, and the shaft's rotation drives the blades to perform cutting operations. For example, Chinese patent CN209866247U discloses a pulverizing blade assembly and a pulverizing device. This patent uses blades mounted on the cutter shaft via splines, with spacers between the blades, and baffles to form a pulverizing structure.

[0003] In existing technology, the blade assembly is usually secured by retaining springs on both sides. When the blade is subjected to high pressure, the retaining springs are prone to loosening or falling off, affecting the stability and safety of the equipment. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a powder cutting blade assembly and a crushing device, which can realize reliable locking of the blade, facilitate assembly and maintenance, and improve the stability of equipment operation.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a powder cutting tool assembly, comprising:

[0006] A cutter shaft, wherein a limiting protrusion ring and a threaded section are provided axially spaced on the outer peripheral surface of the cutter shaft, and a guide groove is provided on the outer peripheral surface of the cutter shaft between the limiting protrusion ring and the threaded section;

[0007] The blade assembly is sleeved on the cutter shaft and located between the limiting protrusion and the threaded section. The guide groove is adapted to drive the blade assembly to rotate synchronously, and one end of the blade assembly abuts against the limiting protrusion.

[0008] A locking mechanism is provided, which is adapted to be threadedly connected to the threaded section and abuts against the other end of the blade assembly to axially clamp the blade assembly between the limiting protrusion and the locking mechanism.

[0009] Furthermore, the guide groove is a helical groove extending along the axial direction of the cutter shaft.

[0010] Furthermore, one end of the cutter shaft is provided with a transmission shaft section extending axially, and the transmission shaft section is provided with a transmission groove.

[0011] Furthermore, the locking mechanism is a locking nut, which is adapted to be threaded onto the threaded section of the cutter shaft.

[0012] Furthermore, the powder cutting tool assembly also includes a fixed guide blade fixing mechanism;

[0013] The blade assembly includes:

[0014] At least one rotating blade, the rotating blade having a central hole, the inner wall of the central hole having a radially protruding guide key, the rotating blade being sleeved on the cutter shaft through the cooperation of the guide key with the guide groove of the cutter shaft;

[0015] At least one fixed guide blade is mounted on the fixed guide blade fixing mechanism. The fixed guide blade has a central sleeve hole, which is sleeved on the cutter shaft.

[0016] The rotating blade and the fixed guide blade are arranged alternately along the axial direction.

[0017] Furthermore, the blade assembly also includes a retaining ring, which is disposed between adjacent rotating blades and sleeved on the blade shaft. The outer diameter of the retaining ring is smaller than the inner diameter of the central sleeve hole of the fixed guide blade.

[0018] Furthermore, the outer peripheral edge of the rotating blade is provided with a plurality of serrated cutting teeth distributed circumferentially, the leading edge of the cutting teeth forming a cutting surface and the trailing edge forming a back cutting surface.

[0019] Furthermore, the fixed guide blade is provided with mounting holes;

[0020] The fixed guide blade fixing mechanism includes:

[0021] A fixed shaft passes through the mounting hole of the fixed guide blade;

[0022] A spacer ring is disposed between adjacent fixed guide blades and sleeved on the fixed shaft.

[0023] Furthermore, the fixed guide blade is also provided with an abutment limiting groove;

[0024] The fixed guide blade fixing mechanism further includes a limiting shaft, which is adapted to cooperate with the abutting limiting groove to limit the position of the fixed guide blade.

[0025] This utility model also provides a crushing device, including two powder cutting blade assemblies arranged opposite to each other;

[0026] The fixed guide blades of the two powder cutting tool assemblies are adapted to form a guide channel that is larger at the top and smaller at the bottom, and a vertical feeding channel connected to the guide channel. The rotating blades of the two powder cutting tool assemblies are staggered to form a crushing channel.

[0027] By adopting the above technical solution, this utility model has the following beneficial effects:

[0028] In this invention, during use, the cutter shaft drives the blade assembly to rotate synchronously via a guide groove on its outer circumference for cutting operations. The blade assembly is sleeved on the cutter shaft and positioned between the limiting convex ring and the threaded section. One end of the blade assembly abuts against the limiting convex ring for axial positioning. The locking mechanism is threadedly connected to the threaded section and abuts against the other end of the blade assembly, thereby axially clamping the blade assembly between the limiting convex ring and the locking mechanism. Locking is achieved through a threaded connection. Compared to the snap ring fixing method, this prevents loosening or detachment even under significant pressure, improving the stability and safety of the equipment operation. Furthermore, the blade assembly can be assembled or disassembled simply by rotating the locking mechanism, making operation convenient and quick, greatly reducing maintenance costs and downtime.

[0029] When the two crushing blade assemblies are arranged opposite each other, a guide channel with a larger upper part and a smaller lower part and a vertical feeding channel are formed between the fixed guide blades, and the rotating blades are arranged in an alternating manner to form a crushing channel, thereby realizing the guiding feeding and crushing of materials.

[0030] In summary, this utility model achieves stable and reliable operation and convenient maintenance of the crushing blade assembly, and is suitable for crushing equipment that requires blade replacement or high-intensity operation. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the powder cutting tool assembly in Embodiment 1 of this utility model. Figure 1 ;

[0032] Figure 2 This is a three-dimensional structural diagram of the powder cutting tool assembly in Embodiment 1 of this utility model. Figure 2 ;

[0033] Figure 3 This is a three-dimensional structural diagram of the powder cutting tool assembly in Embodiment 1 of this utility model. Figure 3 ;

[0034] Figure 4 This is a three-dimensional structural diagram of the powder cutting tool assembly in Embodiment 1 of this utility model. Figure 4 ;

[0035] Figure 5 This is a front view of the rotating blade of the powder cutting tool assembly in Embodiment 1 of this utility model;

[0036] Figure 6 This is a front view of the fixed guide blade of the powder cutting tool assembly in Embodiment 1 of this utility model;

[0037] Figure 7 for Figure 5A magnified view of part A in the middle. Detailed Implementation

[0038] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0039] Example 1: As Figure 1-7 As shown, a powder cutting tool assembly includes:

[0040] The cutter shaft 1 has a limiting protrusion ring 12 and a threaded section 13 spaced axially on its outer peripheral surface. A guide groove 11 is provided on the outer peripheral surface of the cutter shaft 1 between the limiting protrusion ring 12 and the threaded section 13.

[0041] The blade assembly 2 is sleeved on the cutter shaft 1 and located between the limiting protrusion ring 12 and the threaded section 13. The guide groove 11 is suitable for driving the blade assembly 2 to rotate synchronously. One end of the blade assembly 2 abuts against the limiting protrusion ring 12.

[0042] The locking mechanism 3 is adapted to be threadedly connected to the threaded section 13 and abut against the other end of the blade assembly 2 to axially clamp the blade assembly 2 between the limiting protrusion ring 12 and the locking mechanism 3.

[0043] In this embodiment, as Figure 2 As shown, during operation, the cutter shaft 1 drives the blade assembly 2 to rotate synchronously via the guide groove 11 on its outer circumference for cutting. The blade assembly 2 is sleeved on the cutter shaft 1 and located between the limiting protrusion ring 12 and the threaded section 13. One end of the blade assembly 2 abuts against the limiting protrusion ring 12 to form axial positioning. The locking mechanism 3 is threadedly connected to the threaded section 13 and abuts against the other end of the blade assembly 2, thereby axially clamping the blade assembly 2 between the limiting protrusion ring 12 and the locking mechanism 3. The locking is achieved through a threaded connection. Compared with the snap ring fixing method, even when the blade assembly 2 is subjected to greater pressure, there will be no loosening or falling off, improving the stability and safety of equipment operation. At the same time, the blade assembly 2 can be assembled or disassembled by rotating the locking mechanism 3, which is simple and quick to operate, greatly reducing maintenance costs and downtime.

[0044] Specifically, such as Figure 2 As shown, the guide groove 11 is a spiral groove extending along the axial direction of the cutter shaft 1.

[0045] In this embodiment, as Figure 1-2 As shown, the spiral groove causes the blade assembly 2, which is sleeved on the cutter shaft 1, to be arranged in a spiral shape through the cooperation of the guide key and the guide groove 11.

[0046] Specifically, such as Figure 1-2 As shown, one end of the cutter shaft 1 is provided with a transmission shaft section 14 extending axially, and the transmission shaft section 14 is provided with a transmission groove 141.

[0047] In this embodiment, as Figure 1-2 As shown, the transmission shaft section 14 has a cylindrical structure, and a transmission groove 141 extending axially is formed on its outer circumference. The transmission groove 141 is connected to the transmission component of the external drive device to realize the transmission of power from the external drive device to the cutter shaft 1, driving the entire powder cutting tool assembly to perform rotary cutting operations. The external drive device can be a motor.

[0048] Specifically, such as Figure 2 As shown, the locking mechanism 3 is a locking nut, which is suitable for threaded connection on the threaded section 13 of the cutter shaft 1.

[0049] In this embodiment, as Figure 2 As shown, the internal thread of the locking nut engages with the external thread of the threaded section 13 of the cutter shaft 1. By rotating the locking nut, it moves axially along the threaded section 13 to the end face position of the blade assembly 2. Under the action of the threaded connection, the locking nut applies an axial clamping force to the blade assembly 2, clamping the blade assembly 2 between the limiting protrusion 12 and the locking nut, preventing the blade assembly 2 from axial displacement or loosening under high-speed rotation and cutting impact loads.

[0050] Specifically, such as Figure 2-6 As shown, the powder cutting tool assembly also includes a fixed guide blade fixing mechanism;

[0051] Blade assembly 2 includes:

[0052] At least one rotating blade 21 is provided with a central hole 211. A radially protruding guide key (not shown in the figure) is provided on the inner wall of the central hole 211. The rotating blade 21 is sleeved on the cutter shaft 1 through the cooperation of the guide key and the guide groove 11 of the cutter shaft 1.

[0053] At least one fixed guide blade 22 is mounted on a fixed guide blade fixing mechanism. The fixed guide blade 22 is provided with a central sleeve hole 221, which is sleeved on the cutter shaft 1.

[0054] The rotating blade 21 and the fixed guide blade 22 are arranged alternately along the axial direction.

[0055] Specifically, such as Figure 2-4 and Figure 6 As shown, the blade assembly 2 also includes a retaining ring, which is disposed between adjacent rotating blades 21 and sleeved on the blade shaft 1. The outer diameter of the retaining ring is smaller than the inner diameter of the central sleeve hole 221 of the fixed guide blade 22.

[0056] Specifically, such as Figure 3 and Figure 7As shown, the outer peripheral edge of the rotating blade 21 is provided with a plurality of serrated cutting teeth 213 distributed circumferentially. The leading edge of the cutting teeth 213 forms a cutting surface and the trailing edge forms a back cutting surface.

[0057] In this embodiment, as Figure 3-4 and Figure 6 As shown, the guide key of the rotating blade 21 forms a keyway connection with the guide groove 11 on the cutter shaft 1, so that the rotating blade 21 rotates synchronously with the cutter shaft 1, while the fixed guide blade 22 is loosely fitted on the cutter shaft 1 through the central sleeve hole 221 and fixed on the fixed guide blade fixing mechanism to remain stationary.

[0058] The retaining ring serves to axially position and space adjacent rotating blades 21, and its outer diameter is designed to be smaller than the inner diameter of the central sleeve hole 221 of the fixed guide blade 22. This dimensional configuration allows the retaining ring to pass through the central sleeve hole 221 of the fixed guide blade 22.

[0059] Specifically, such as Figure 4 and Figure 6 As shown, the fixed guide blade 22 is provided with mounting holes 222;

[0060] The fixed guide blade fixing mechanism (not shown in the figure) includes:

[0061] A fixed shaft passes through the mounting hole 222 of the fixed guide blade 22;

[0062] Spacer rings are placed between adjacent fixed guide blades 22 and are sleeved on the fixed shaft.

[0063] Specifically, such as Figure 1-2 As shown, the fixed guide blade 22 is also provided with an abutment limiting groove 223;

[0064] The fixed guide blade fixing mechanism also includes a limiting shaft, which is adapted to cooperate with the abutting limiting groove 223 to limit the position of the fixed guide blade 22.

[0065] In this embodiment, as Figure 3-4 and Figure 6 As shown, a fixed shaft passes through mounting holes 222 of multiple fixed guide blades 22, connecting and fixing the fixed guide blades 22 together in series. Spacer rings are installed between adjacent fixed guide blades 22 and fitted onto the fixed shaft. The spacer rings ensure that a preset axial distance is maintained between adjacent fixed guide blades 22, providing necessary clearance space for the rotational movement of the rotating blade 21 and preventing interference and collision between the rotating blade 21 and the fixed guide blades 22.

[0066] The limiting shaft and the abutment limiting groove 223 on the fixed guide blade 22 form a mating connection. The limiting shaft abuts against the abutment limiting groove 223 to provide radial and circumferential positioning for the fixed guide blade 22. This prevents the fixed guide blade 22 from shifting or rotating when subjected to radial force and torque during the cutting process.

[0067] Example 2: This example provides a crushing device, including two powder cutting blade assemblies arranged opposite to each other as in Example 1;

[0068] Among them, the fixed guide blades 22 of the two powder cutting tool assemblies are adapted to form a guide channel 51 with a larger upper part and a smaller lower part and a vertical feed channel 52 connected to the guide channel 51. The rotating blades 21 of the two powder cutting tool assemblies are staggered to form a crushing channel 53.

[0069] In this embodiment, when the two pulverizing blade assemblies are arranged opposite each other, their fixed guide blades 22 form a tapered guide channel 51 that is larger at the top and smaller at the bottom. The upper opening of the guide channel 51 is larger to facilitate material entry, while the lower opening is smaller to achieve centralized material guidance. The guide channel 51 is connected to the vertical feed channel 52. After entering from the vertical feed channel 52, the material is guided to the pulverizing area through the guide channel 51.

[0070] The rotating blades 21 of the two powder cutting tool assemblies are staggered in the axial position to form an interleaved crushing channel 53. When the rotating blades 21 rotate at high speed in the crushing channel 53, their serrated cutting teeth 213 continuously cut and tear the material entering the crushing channel 53, thereby realizing the crushing and processing of the material.

[0071] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A powder cutting tool assembly, characterized in that, include: A cutter shaft (1) is provided with a limiting protrusion ring (12) and a threaded section (13) spaced apart along the axial direction on the outer peripheral surface of the cutter shaft (1), and a guide groove (11) is provided on the outer peripheral surface of the cutter shaft (1) between the limiting protrusion ring (12) and the threaded section (13). The blade assembly (2) is sleeved on the cutter shaft (1) and located between the limiting protrusion ring (12) and the threaded section (13). The guide groove (11) is adapted to drive the blade assembly (2) to rotate synchronously. One end of the blade assembly (2) abuts against the limiting protrusion ring (12). A locking mechanism (3) is adapted to be threadedly connected to the threaded section (13) and abut against the other end of the blade assembly (2) to axially clamp the blade assembly (2) between the limiting protrusion (12) and the locking mechanism (3).

2. The powder cutting tool assembly according to claim 1, characterized in that: The guide groove (11) is a spiral groove extending along the axial direction of the cutter shaft (1).

3. The powder cutting tool assembly according to claim 1, characterized in that: One end of the cutter shaft (1) is provided with a transmission shaft section (14) extending axially, and the transmission shaft section (14) is provided with a transmission groove (141).

4. The powder cutting tool assembly according to claim 1, characterized in that: The locking mechanism (3) is a locking nut, which is adapted to be threaded onto the threaded section (13) of the cutter shaft (1).

5. The powder cutting tool assembly according to claim 1, characterized in that: It also includes a fixed guide blade fixing mechanism; The blade assembly (2) includes: At least one rotating blade (21) is provided with a central hole (211). A radially protruding guide key is provided on the inner wall of the central hole (211). The rotating blade (21) is sleeved on the cutter shaft (1) through the cooperation of the guide key with the guide groove (11) of the cutter shaft (1). At least one fixed guide blade (22) is mounted on the fixed guide blade fixing mechanism. The fixed guide blade (22) is provided with a central sleeve hole (221). The central sleeve hole (221) of the fixed guide blade (22) is sleeved on the cutter shaft (1). The rotating blade (21) and the fixed guide blade (22) are arranged alternately along the axial direction.

6. The powder cutting tool assembly according to claim 5, characterized in that: The blade assembly (2) also includes a retaining ring, which is disposed between adjacent rotating blades (21) and sleeved on the blade shaft (1). The outer diameter of the retaining ring is smaller than the inner diameter of the central sleeve hole (221) of the fixed guide blade (22).

7. The powder cutting tool assembly according to claim 5, characterized in that: The outer peripheral edge of the rotating blade (21) is provided with a plurality of serrated cutting teeth (213) distributed circumferentially. The front edge of the cutting teeth (213) forms a cutting surface and the rear edge forms a cutting surface.

8. The powder cutting tool assembly according to claim 5, characterized in that: The fixed guide blade (22) is provided with mounting holes (222); The fixed guide blade fixing mechanism includes: A fixed shaft passes through the mounting hole (222) of the fixed guide blade (22). A spacer ring is disposed between adjacent fixed guide blades (22) and sleeved on the fixed shaft.

9. The powder cutting tool assembly according to claim 8, characterized in that: The fixed guide blade (22) is also provided with an abutment limiting groove (223); The fixed guide blade fixing mechanism also includes a limiting shaft, which is adapted to cooperate with the abutting limiting groove (223) to restrict the position of the fixed guide blade (22).

10. A crushing device, characterized in that, include: Two powder cutting tool assemblies arranged opposite to each other as described in any one of claims 5 to 9; Among them, the fixed guide blades (22) of the two powder cutting tool assemblies are adapted to form a guide channel (51) that is larger at the top and smaller at the bottom and a vertical feed channel (52) connected to the guide channel (51). The rotating blades (21) of the two powder cutting tool assemblies are staggered to form a crushing channel (53).

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