Crusher stationary knife mounting structure convenient to disassemble and replace

Abstract

The utility model relates to a pulverizer stationary knife mounting structure convenient to disassemble and replace in the field of pulverizer stationary knives, which comprises a knife holder and stationary blades mounted on the knife holder, the knife holder is provided with a dovetail groove, a limit bulge is formed on the side surface of the knife holder, and the stationary blades are inserted and assembled along the dovetail groove through the insertion bulge and move close to the limit bulge. A protruding positioning guide block is arranged on the tool apron, a positioning sliding groove capable of sliding along the positioning guide block is formed in the bottom of the fixed blade, a limiting screw hole is formed in the side face, close to the limiting protrusion, of the fixed blade in a sliding mode, a limiting bolt is connected to the limiting protrusion, and one end of the limiting bolt can penetrate through the limiting protrusion to be in threaded connection with the limiting screw hole. According to the utility model, the fixed blade can be accurately and quickly disassembled and assembled through the plug-in assembly of the dovetail groove and the plug-in mounting bulge, the fixed blade is finally fixed through the threaded connection of the limiting bolt and the limiting screw hole, and the stability and reliability of the connection of the fixed blade and the tool apron are further ensured.

Description

Technical Field

[0001] This utility model relates to the field of fixed blades in crushers, specifically to a crusher fixed blade mounting structure that is easy to disassemble and replace. Background Technology

[0002] As a crucial component of pulverizers, the fixed blade of a pulverizer is widely used in various industrial fields, including but not limited to: In the mining industry, during the extraction and processing of ore, the fixed blade of a pulverizer is required to crush and grind the ore for further extraction of useful substances. In the chemical industry, during the manufacturing of plastics and rubber, raw materials need to be finely ground to achieve specific particle size standards, where the fixed blade of the pulverizer plays a key role in cutting and mixing. Furthermore, in the pharmaceutical and food processing industries, the fixed blade of a pulverizer also plays an important role; for example, processes such as slicing traditional Chinese medicine and crushing flour rely heavily on high-quality fixed blades.

[0003] Existing crusher fixed blade mounting structures typically include fixed blades and a base. The fixed blades are fixedly mounted on the base, which is located within the crushing chamber of the crusher. The fixed blades are simply secured to the base with bolts. During operation, the fixed blades, as a critical crushing component, work in conjunction with the moving blade assembly within the crushing chamber. When the fixed blades wear out, they need to be replaced promptly to maintain the efficient operation of the equipment.

[0004] However, although the existing fixed blade installation structure of the crusher shows certain advantages in terms of ease of operation and safety, there are still some significant defects in actual use: the traditional fixed blade installation method of the crusher usually uses bolts for fastening connection, and the installation and disassembly process requires the use of special tools. The existing fixed blade structure of the crusher is relatively simple. The connection between the fixed blade and the base may become loose or displaced due to the vibration of the crushing process, which will affect the crushing effect of the crusher and may also pose a serious safety threat to the operator and surrounding equipment. In addition, the connection stability between the existing fixed blade and the base is poor and it is not easy to quickly match and position the connection. As a result, it takes a long time to correct after the fixed blade is disassembled and replaced, which affects the convenience of fixed blade disassembly and assembly. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned defects and provide a crusher fixed blade installation structure that is easy to disassemble and replace, so as to solve the technical problems in the background art where the connection stability between the existing fixed blade and the base is poor, it is not easy to quickly match and position the connection, and the efficiency of fixed blade disassembly and assembly is affected.

[0006] The objective of this utility model is achieved through the following means:

[0007] A pulverizer fixed blade mounting structure for easy disassembly and replacement includes a blade holder and a fixed blade mounted on the blade holder. The blade holder has a dovetail groove, one end of which extends to one side of the blade holder. A limiting protrusion is formed on the side of the blade holder. The bottom of the fixed blade has an insertion protrusion that mates with the dovetail groove. The fixed blade is inserted and assembled along the dovetail groove via the insertion protrusion and moves closer to the limiting protrusion. A positioning guide block with a protrusion is provided on the blade holder. A positioning groove that can slide along the positioning guide block is formed on the bottom of the fixed blade. A limiting screw hole is provided on the side of the fixed blade that slides closer to the limiting protrusion. A limiting bolt is connected to the limiting protrusion. One end of the limiting bolt can pass through the limiting protrusion and be threadedly connected to the limiting screw hole.

[0008] Furthermore, as described above, the fixed blade has a raised cutting portion formed on the side away from the limiting protrusion, and the cutting portions are arrayed along the length direction of the fixed blade.

[0009] The protruding cutting section is used to mate with the external shredder blade, thereby creating a shredding gap between the fixed blade and the shredder blade, which is then used to shred the product.

[0010] Specifically, the cutting part is a protrusion and integrally formed with the fixed blade. The fixed blade is made of wear-resistant steel. The cutting part undergoes a special heat treatment process to ensure that the cutting part has high hardness and good toughness, so as to improve cutting efficiency and service life.

[0011] Furthermore, as described above, the side of the cutting portion is formed with an inclined groove.

[0012] By creating oblique grooves on the side of the cutting section, the effect of crushing and cutting the product is further improved.

[0013] Furthermore, as described above, the surface of the tool holder is provided with a plurality of through-hole fixing slots.

[0014] The blade holder is connected and fixed to the crushing chamber of the crusher through a fixing slot. Specifically, the blade holder is fixedly connected to the crushing chamber by bolts.

[0015] Furthermore, as described above, the surface of the tool holder is provided with a plurality of connecting holes, and the fixed blade is provided with a plurality of mounting slots for mating with the connecting holes.

[0016] By setting bolts to pass through the mounting slot and connect with the tool holder's connection hole for mating, the fixed cutting tool can be installed on the tool holder.

[0017] Specifically, the mounting slot is oblong, allowing the gap between the fixed blade and the external shredder's moving blade to be adjusted as needed.

[0018] The fixed insert is paired with the dovetail groove via an insertion protrusion, allowing it to slide along the groove for quick and easy positioning and connection between the fixed insert and the tool holder, thus improving the convenience of subsequent assembly and disassembly. The secondary pairing of the positioning guide block and the positioning slide groove further enhances the stability and reliability of the connection between the fixed insert and the tool holder.

[0019] Furthermore, as described above, both the fixed blade and the blade holder are provided with clearance slots for avoiding the moving blades of the pulverizer.

[0020] The clearance slot is designed to accommodate the moving blades of an external crusher.

[0021] The beneficial effects of this utility model are as follows: By opening a dovetail groove on the tool holder, the fixed insert can be inserted and assembled with the bottom insertion protrusion through the dovetail groove, ensuring the fixed insert is stably installed on the tool holder and providing guidance for installation. This allows the fixed insert to be accurately and quickly installed and removed through the insertion protrusion. The insertion and assembly of the dovetail groove and the insertion protrusion effectively prevents the fixed insert from accidentally falling off after installation, improving the stability and safety of the overall structure. At the same time, the positioning guide block on the tool holder matches the positioning groove formed at the bottom of the fixed insert, allowing the fixed insert to slide smoothly along a specific path during installation, improving installation efficiency and adjustment accuracy. When the fixed insert is inserted close to the limiting protrusion, a limiting bolt is connected to the limiting protrusion. The threaded connection between the limiting bolt and the limiting bolt hole achieves final fixation of the fixed insert, further ensuring the stability and reliability of the connection between the fixed insert and the tool holder, thereby facilitating subsequent disassembly and replacement work and improving the convenience and efficiency of maintenance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure from the forward-looking angle in this embodiment;

[0023] Figure 2 This is a schematic diagram of the overall structure from the rear-view angle in this embodiment;

[0024] Figure 3 This is an exploded structural diagram from a top view of this embodiment;

[0025] Figure 4 This is an exploded structural diagram of this embodiment from a bottom-view perspective;

[0026] The reference numerals in the figure are as follows: 1-tool holder, 2-fixed blade, 3-dovetail groove, 4-limiting protrusion, 5-insertion protrusion, 6-positioning guide block, 7-positioning slide, 8-limiting screw hole, 9-limiting bolt, 10-cutting part, 11-fixing slot, 12-connecting hole, 13-mounting slot, 14-limiting surface, 15-open end. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] In this embodiment, refer to Figures 1-4 The specific implementation of the pulverizer fixed blade mounting structure for easy disassembly and replacement includes a blade holder 1 and a fixed blade 2 mounted on the blade holder 1. The blade holder 1 has three sets of dovetail grooves 3. One end of the dovetail groove 3 extends to one side of the blade holder 1. A limiting protrusion 4 is formed on the side of the blade holder 1. The bottom of the fixed blade 2 has an insertion protrusion 5 that is inserted and assembled with the dovetail groove 3. The fixed blade 2 is inserted and assembled along the dovetail groove 3 through the insertion protrusion 5 and moves closer to the limiting protrusion 4. A protruding positioning guide block 6 is provided on the blade holder 1. A positioning groove 7 that can slide along the positioning guide block 6 is formed on the bottom of the fixed blade 2. Five equally spaced limiting screw holes 8 are provided on the side of the fixed blade 2 that slides closer to the limiting protrusion 4. Five limiting bolts 9 are connected to the limiting protrusion 4. One end of each limiting bolt 9 passes through the limiting protrusion 4 and is threadedly connected to a limiting screw hole 8.

[0029] The fixed blade 2 has a raised cutting section 10 on its side away from the limiting protrusion 4, and the cutting sections 10 are arrayed along the length of the fixed blade 2. The raised cutting sections 10 are used to mate with external pulverizing motor blades, thereby creating a pulverizing gap between the fixed blade 2 and the pulverizing motor blades, which is then used for pulverizing the product. An inclined groove (not shown) is formed on the side of the cutting section 10. By providing the inclined groove on the side of the cutting section 10, the effect of pulverizing and cutting the product is further improved.

[0030] Specifically, the cutting part 10 is a protrusion and integrally formed with the fixed blade 2. The fixed blade is made of wear-resistant steel. The cutting part 10 undergoes a special heat treatment process to ensure that the cutting part 10 has high hardness and good toughness, so as to improve cutting efficiency and service life.

[0031] The surface of the blade holder 1 is provided with several through fixing slots 11. The blade holder 1 is used to connect and fix to the crushing chamber of the crusher through the fixing slots 11. Specifically, the blade holder 1 is fixedly connected to the crushing chamber by bolts.

[0032] The surface of the blade holder 1 has several connecting holes 12, and the fixed blade 2 has several mounting slots 13 for mating with the connecting holes 12. The fixed blade 2 can be mounted on the blade holder 1 by using bolts passing through the mounting slots 13 and mating them with the connecting holes 12 of the blade holder 1. Specifically, the mounting slots 13 are oblong, allowing adjustment of the gap between the fixed blade 2 and the external pulverizing motor blade as needed.

[0033] The fixed blade 2 is paired with the dovetail groove 3 via the insertion protrusion 5, allowing it to slide along the dovetail groove 3 for quick positioning and connection with the tool holder 1, thus improving the convenience of subsequent assembly and disassembly. The secondary pairing of the positioning guide block 6 and the positioning slide groove 7 further enhances the stability and reliability of the connection between the fixed blade 2 and the tool holder 1.

[0034] One end of the positioning slide 7 forms a limiting surface 14, and the other end of the positioning slide 7 forms an open end 15. The fixed blade 2 can slide along the positioning guide block 6 through the open end 15 of the positioning slide 7, so that it can be adjusted according to the fixed blade and the crushing motor blade.

[0035] Both the fixed blade 2 and the blade holder 1 are provided with clearance slots to avoid the moving blades of the pulverizer. The clearance slots are designed to accommodate the moving blades of the external pulverizer.

[0036] The specific installation and usage process in this embodiment is as follows:

[0037] The blade holder 1 is connected to the crushing chamber of the crusher. Specifically, it is fixed to the crushing chamber by bolts passing through the fixing slots 11 on the blade holder 1. The fixed blade 2 is paired with the dovetail groove 3 on the blade holder 1 through the bottom insertion protrusion 5 and slides along the dovetail groove 3 towards the limiting protrusion 4, so that the fixed blade 2 can be installed accurately. The insertion and matching of the dovetail groove 3 and the insertion protrusion 5 effectively prevents the fixed blade 2 from accidentally falling off after installation, improving the stability and safety of the overall structure. At the same time, the fixed blade 2 is inserted and matched with the positioning guide block 6 through the positioning slide groove 7. When the fixed blade 2 continues to slide, the limiting surface 14 of the positioning slide groove 7 comes into contact with the positioning guide block 6. The fixed blade 2 is inserted into the installation position and threadedly connected to the connecting hole 12 on the tool holder 1 by a bolt passing through the mounting slot 13, ensuring the fixed blade 2 is securely installed on the tool holder 1. At this time, a limit bolt 9 is connected to the limit protrusion 4, and the limit bolt 9 passes through the limit protrusion 4 and is threadedly connected to the limit screw hole 8 on the side of the fixed blade 2, realizing the final fixation of the fixed blade 2. Specifically, the connection between the limit bolt 9 and the limit screw hole 8 can provide a pulling force to the positioning plate to move closer to the limit protrusion 4, further ensuring the stability and reliability of the connection between the fixed blade 2 and the tool holder 1. The dovetail groove 3 and the insertion protrusion 5 facilitate subsequent disassembly and replacement work, improving the convenience and efficiency of maintenance.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A pulverizer fixed blade mounting structure that is easy to disassemble and replace, comprising a blade holder and fixed blades mounted on the blade holder, characterized in that: The tool holder has a dovetail groove, one end of which extends to one side of the tool holder. A limiting protrusion is formed on the side of the tool holder. The bottom of the fixed blade has an insertion protrusion that mates with the dovetail groove. The fixed blade is inserted and assembled along the dovetail groove via the insertion protrusion and moves toward the limiting protrusion. The tool holder has a protruding positioning guide block. The bottom of the fixed blade has a positioning groove that can slide along the positioning guide block. A limiting screw hole is provided on the side of the fixed blade that slides toward the limiting protrusion. A limiting bolt is connected to the limiting protrusion. One end of the limiting bolt can pass through the limiting protrusion and be threaded into the limiting screw hole.

2. The easily disassembled and replaceable fixed blade mounting structure for a crusher according to claim 1, characterized in that: The fixed blade has a raised cutting section on the side away from the limiting protrusion, and the cutting section is arrayed along the length direction of the fixed blade.

3. The easily disassembled and replaceable fixed blade mounting structure for a crusher according to claim 2, characterized in that: The side of the cutting section has an inclined groove.

4. The easily disassembled and replaceable fixed blade mounting structure for a crusher according to claim 1, characterized in that: The surface of the tool holder has several through-holes for fixing.

5. The easily removable and replaceable fixed blade mounting structure for a crusher according to any one of claims 1-4, characterized in that: The surface of the tool holder is provided with several connecting holes, and the fixed blade is provided with several mounting slots for matching the connecting holes.

6. The easily removable and replaceable fixed blade mounting structure for a crusher according to any one of claims 1-4, characterized in that: Both the fixed blade and the blade holder are provided with clearance slots to avoid the moving blades of the pulverizer.

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