Hydraulic vertical plowshare mill

Abstract

This utility model relates to the field of grinding technology, specifically to a hydraulic vertical pressure plate grinding mill. It includes a base and a housing mounted on the base. A lower grinding disc is rotatably supported within the housing, and an upper grinding disc is positioned above it. Grinding balls are placed between the lower and upper grinding discs. Annular grooves are provided on the contact surfaces of both the lower and upper grinding discs opposite the grinding balls. A pressure plate is positioned above the upper grinding disc. A hydraulic mechanism for applying pressure to the pressure plate is provided on the housing. A turntable is positioned below the lower grinding disc. The turntable and lower grinding disc are positioned and fitted together, ensuring that the lower grinding disc rotates with the turntable. The turntable is rotatably supported by a transmission assembly, which includes a main shaft. The top end of the main shaft is fixedly connected to the turntable, and the main shaft is mounted on a positioning support assembly. An analyzer is located at the top of the housing. This hydraulic vertical pressure plate grinding mill has the advantages of compact structure, stable operation, and high grinding efficiency, and is suitable for grinding various materials.

Description

Technical Field

[0001] This utility model relates to the field of grinding and processing technology, specifically to a hydraulic vertical pressure plate grinding mill. Background Technology

[0002] In powder processing fields such as refractories, building materials, chemicals, and mining, grinding equipment is a crucial production tool, and its performance and quality directly affect the quality of powder products and production efficiency. Traditional grinding mills, such as ball mills, have revealed many problems during long-term use.

[0003] On the one hand, during the grinding process, the equipment operates unstablely, and the main shaft is prone to shaking and deviation when rotating, leading to accelerated wear of components such as the grinding ring and grinding balls, and shortening the equipment's service life. Simultaneously, this unstable operating state also affects the grinding effect, resulting in uneven particle size distribution in the finished powder and difficulty in guaranteeing quality. Furthermore, the transmission structure of traditional grinding mills exhibits high frictional resistance during operation, resulting in high energy loss and low transmission efficiency, which not only increases production costs but also reduces the overall performance of the equipment.

[0004] On the other hand, during grinding operations, unstable equipment operation can easily intensify friction and collision between the grinding parts and the material, generating a large amount of mechanical iron. This mechanical iron mixed into the finished powder not only reduces the quality of the powder and affects its subsequent application performance, but also causes severe wear on the equipment during subsequent processing, further increasing equipment maintenance costs and potential production risks. Utility Model Content

[0005] This utility model provides a hydraulic vertical pressure plate grinding mill to solve the technical problem of poor operational stability of pressure plate grinding mills in the prior art, which affects equipment life and product quality.

[0006] To solve the above problems, the present invention provides a hydraulic vertical pressure plate grinding mill with the following technical solution:

[0007] The device includes a base and a housing mounted on the base. A lower grinding disc is rotatably supported inside the housing. An upper grinding disc is positioned above the lower grinding disc. A grinding ball is positioned between the lower and upper grinding discs. Annular grooves are provided on the contact surfaces of the lower and upper grinding discs opposite to the grinding ball. A pressure plate is positioned above the upper grinding disc. A hydraulic mechanism for applying pressure to the pressure plate is provided on the housing. A turntable is positioned below the lower grinding disc. The turntable and the lower grinding disc are positioned and fitted together so that when the turntable rotates, the lower grinding disc rotates with the turntable.

[0008] The turntable is supported by a transmission assembly, which includes a main shaft. The top end of the main shaft is fixedly connected to the turntable, and the main shaft is located on a positioning support assembly.

[0009] An analyzer is installed at the top of the box.

[0010] Furthermore, the positioning support assembly includes a fixed sleeve fixedly disposed between the base and the housing, the top end of the fixed sleeve being provided with a detachable upper sleeve, the top end of the upper sleeve being rotatably fitted to the positioning sleeve, and the positioning sleeve being fixedly connected to the main shaft by an interference fit.

[0011] Furthermore, the bottom end of the positioning sleeve is provided with a positioning disk, the bottom end surface of the positioning disk is provided with an annular groove, and the upper end surface of the upper sleeve is provided with an annular positioning block that cooperates with the annular groove.

[0012] Furthermore, an annular cavity is formed on the inner wall of the positioning sleeve, and a limiting block extending into the annular cavity is provided at the top of the upper sleeve, and an annular air groove is provided on the outer wall of the limiting block.

[0013] Furthermore, the bottom end of the fixed sleeve is detachably provided with a lower end sleeve, the inner wall of the lower port of the lower end sleeve is fitted with the outer wall of the main shaft, and the lower end sleeve and the main shaft are rotatably engaged.

[0014] Furthermore, the hydraulic mechanism includes a hydraulic telescopic rod, and the side wall of the housing is provided with a support chamber for supporting the hydraulic telescopic rod. The edge of the pressure plate is provided with an action arm extending out of the housing. The action arm extends into the corresponding support chamber and is connected to the action end of the hydraulic telescopic rod.

[0015] Furthermore, the base is equipped with a motor, and the rotating shaft driven by the motor is connected to the main shaft through a coupling.

[0016] Furthermore, a baffle ring is provided on the inner wall of the box.

[0017] The beneficial effects of the hydraulic vertical pressure plate grinding mill provided by this utility model are:

[0018] In this invention, the hydraulic telescopic rod is pressurized by a hydraulic pump station, resulting in smooth operation and low noise. Furthermore, the mechanical iron content generated by the grinding parts in the finished powder is reduced by approximately 50%. This reduction in mechanical iron content not only improves the quality of the powder but also reduces wear on equipment during subsequent processing, thereby lowering production costs.

[0019] In this invention, the fixed sleeve, upper sleeve, and positioning sleeve are sequentially configured to provide stable support for the main shaft, reducing swaying and offset during turntable rotation and ensuring smooth equipment operation. The positioning sleeve and upper sleeve are connected to the annular cavity via a limiting block to form a tightly integrated structure. Working together with the lower sleeve, they jointly bear torque and axial force, enhancing the overall load-bearing capacity of the structure and extending the service life of the equipment.

[0020] In this invention, the annular air groove forms an air film between the limiting block and the inner wall of the annular cavity, which plays a lubricating role when the main shaft rotates, reducing frictional resistance, lowering energy loss, and improving transmission efficiency. Attached Figure Description

[0021] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0022] Figure 1 This is a schematic diagram of the structure of the hydraulic vertical pressure plate grinding mill of this utility model;

[0023] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0024] Figure 3 for Figure 1 A magnified view of a portion of region B in the middle;

[0025] Figure 4 This is a schematic diagram of the hydraulic vertical pressure plate grinding mill of this utility model in use with cyclone discharge.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Base; 11. Rotating shaft; 2. Housing; 20. Material retaining ring; 21. Lower grinding disc; 211. Annular groove; 22. Upper grinding disc; 23. Grinding ball; 24. Pressure plate; 241. Actuating arm; 25. Turntable; 26. Main shaft; 27. Positioning support assembly; 271. Fixed sleeve; 272. Upper end sleeve; 2721. Annular positioning block; 2722. Limiting block; 2723. Annular air groove; 273. Positioning sleeve; 2731. Positioning plate; 2732. Annular slide groove; 2733. Annular cavity; 274. Lower end sleeve; 28. Hydraulic telescopic rod; 29. ​​Support chamber; 3. Analyzer. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] The number of any elements in the accompanying drawings is for illustrative purposes only and not as a limitation, and any naming is for distinction only and has no limiting meaning.

[0030] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0031] An embodiment of a hydraulic vertical pressure plate grinding mill provided by this utility model:

[0032] like Figures 1 to 4 As shown,

[0033] The device includes a base 1 and a housing 2 mounted on the base 1. A lower grinding disc 21 is rotatably supported inside the housing 2. An upper grinding disc 22 is positioned above the lower grinding disc 21. Grinding balls 23 are positioned between the lower and upper grinding discs 21 and 22. Annular grooves 211 are provided on the contact surfaces of the lower and upper grinding discs 21 and 22 opposite to the grinding balls 23. A pressure plate 24 is positioned above the upper grinding disc 22. A hydraulic mechanism for applying pressure to the pressure plate 24 is provided on the housing 2. A turntable 25 is positioned below the lower grinding disc 21. The turntable 25 and the lower grinding disc 21 are positioned and fitted together, such that when the turntable 25 rotates, the lower grinding disc 21 rotates with the turntable 25. A retaining ring 20 is provided on the inner wall of the housing 2.

[0034] Specifically, the hydraulic mechanism includes a hydraulic telescopic rod 28, a support chamber 29 for supporting the hydraulic telescopic rod 28 is provided on the side wall of the housing 2, and an action arm 241 extending out of the housing 2 is provided on the edge of the pressure plate 24. The action arm 241 extends into the corresponding support chamber 29 and is connected to the action end of the hydraulic telescopic rod 28.

[0035] The hydraulic telescopic rod 28 is pressurized by a hydraulic pump station, ensuring smooth operation and low noise. Furthermore, it reduces the mechanical iron content generated by grinding parts in the finished powder by approximately 50%. This reduction in mechanical iron content not only improves the quality of the powder but also reduces wear on equipment during subsequent processing, thereby lowering production costs.

[0036] In this embodiment, the turntable 25 is rotated and supported by a transmission assembly, which includes a main shaft 26. The top end of the main shaft 26 is fixedly connected to the turntable 25, and the main shaft 26 is located on the positioning support assembly 27.

[0037] Specifically, the positioning support assembly 27 includes a fixing sleeve 271 fixedly disposed between the base 1 and the housing 2. The top end of the fixing sleeve 271 is provided with a detachable upper sleeve 272. The top end of the upper sleeve 272 is rotatably fitted to the positioning sleeve 273. The positioning sleeve 273 is fixedly connected to the main shaft 26 by an interference fit.

[0038] The bottom end of the positioning sleeve 273 is provided with a positioning disk 2731, the bottom end surface of the positioning disk 2731 is provided with an annular groove 2732, and the upper end surface of the upper sleeve 272 is provided with an annular positioning block 2721 that cooperates with the annular groove 2732.

[0039] The fixed sleeve 271, the upper sleeve 272 and the positioning sleeve 273 are arranged in sequence to provide stable support for the main shaft 26, ensure the overall structure is stable when the turntable 25 rotates, reduce shaking and offset, and ensure the smooth operation of the equipment.

[0040] In addition, an annular cavity 2733 is formed on the inner wall of the positioning sleeve 273, and a limiting block 2722 is provided at the top of the upper sleeve 272, which extends into the annular cavity 2733. An annular air groove 2723 is provided on the outer wall of the limiting block 2722.

[0041] The limiting block 2722 extends into the annular cavity 2733, forming a tightly integrated structure between the positioning sleeve 273 and the upper sleeve 272. When the main shaft 26 rotates, the two can work together to share the torque and axial force, enhancing the overall load-bearing capacity of the structure and extending the service life of the equipment.

[0042] The annular air groove 2723 is positioned between the limiting block 2722 and the inner wall of the annular cavity 2733, forming an air film. When the main shaft 26 rotates, the air film can act as a lubricant, reducing the frictional resistance between the limiting block 2722 and the inner wall of the annular cavity 2733, reducing energy loss, and improving transmission efficiency.

[0043] In this embodiment, the bottom end of the fixed sleeve 271 is detachably provided with a lower end sleeve 274. The inner wall of the lower port of the lower end sleeve 274 is in contact with the outer wall of the main shaft 26, and the lower end sleeve 274 and the main shaft 26 are rotatably engaged.

[0044] The lower sleeve 274 can support the main shaft 26 near the bottom, which can reduce the radial runout of the main shaft 26 during rotation, improve the rotational accuracy of the main shaft 26, and thus ensure the accuracy and stability of the turntable 25 rotation, which is conducive to improving the working quality of the equipment.

[0045] The base 1 is equipped with a motor, and the rotating shaft 11 driven by the motor is connected to the main shaft 26 through a coupling.

[0046] The top of the chamber 2 is equipped with an analyzer 3.

[0047] In this embodiment, the analyzer 3 includes an analysis wheel. The support shaft of the analysis wheel rotates through a bearing at the top of the housing 2, and the top of the support shaft is provided with a pulley, which can be driven by a motor fixed to one side of the housing 2.

[0048] In this embodiment, the hydraulic vertical grinding mill has a feed inlet on the side of the housing 2. After the material is fed in, it is ground by the combined action of the lower grinding disc 21, the upper grinding disc 22, and the grinding balls 23. The ground material is then classified and collected by the analyzer 3.

[0049] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0050] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A hydraulic vertical grinding mill, comprising a base (1) and a housing (2) disposed on the base (1), wherein a lower grinding disc (21) is rotatably supported inside the housing (2), an upper grinding disc (22) is disposed above the lower grinding disc (21), grinding balls (23) are disposed between the lower grinding disc (21) and the upper grinding disc (22), and annular grooves (211) are provided on the contact surfaces of the lower grinding disc (21) and the upper grinding disc (22) opposite to the grinding balls (23), characterized in that, A pressure plate (24) is provided above the upper grinding disc (22), and a hydraulic mechanism for applying pressure to the pressure plate (24) is provided on the housing (2). A turntable (25) is provided below the lower grinding disc (21). The turntable (25) and the lower grinding disc (21) are positioned and matched so that when the turntable (25) rotates, the lower grinding disc (21) rotates with the turntable (25). The turntable (25) is rotatably supported by a transmission assembly, which includes a main shaft (26). The top end of the main shaft (26) is fixedly connected to the turntable (25), and the main shaft (26) is located on a positioning support assembly (27). The top of the housing (2) is equipped with an analyzer (3).

2. The hydraulic vertical pressure plate grinding mill according to claim 1, characterized in that, The positioning support assembly (27) includes a fixed sleeve (271) fixed between the base (1) and the housing (2). The top of the fixed sleeve (271) is provided with a detachable upper sleeve (272). The top of the upper sleeve (272) is rotatably fitted to the positioning sleeve (273). The positioning sleeve (273) is fixedly connected to the main shaft (26) by interference fit.

3. The hydraulic vertical pressure plate grinding mill according to claim 2, characterized in that, The bottom end of the positioning sleeve (273) is provided with a positioning disk (2731), the bottom end surface of the positioning disk (2731) is provided with an annular groove (2732), and the upper end surface of the upper sleeve (272) is provided with an annular positioning block (2721) that cooperates with the annular groove (2732).

4. The hydraulic vertical pressure plate grinding mill according to claim 2, characterized in that, An annular cavity (2733) is formed on the inner wall of the positioning sleeve (273), and a limiting block (2722) is provided at the top of the upper sleeve (272) that extends into the annular cavity (2733). An annular air groove (2723) is provided on the outer wall of the limiting block (2722).

5. The hydraulic vertical pressure plate grinding mill according to claim 2, characterized in that, The bottom end of the fixed sleeve (271) is detachably provided with a lower end sleeve (274). The inner wall of the lower port of the lower end sleeve (274) is in contact with the outer wall of the main shaft (26), and the lower end sleeve (274) and the main shaft (26) are rotatably engaged.

6. The hydraulic vertical pressure plate grinding mill according to claim 1, characterized in that, The hydraulic mechanism includes a hydraulic telescopic rod (28), and a support chamber (29) for supporting the hydraulic telescopic rod (28) is provided on the side wall of the housing (2). An action arm (241) extending out of the housing (2) is provided on the edge of the pressure plate (24). The action arm (241) extends into the corresponding support chamber (29) and is connected to the action end of the hydraulic telescopic rod (28).

7. The hydraulic vertical pressure plate grinding mill according to claim 1, characterized in that, The base (1) is equipped with a motor, and the rotating shaft (11) driven by the motor is connected to the main shaft (26) through a coupling.

8. The hydraulic vertical pressure plate grinding mill according to claim 1, characterized in that, The inner wall of the box (2) is provided with a baffle ring (20).

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