Rotary drum transmission assembly of vacuum suction filter without filter cloth

Abstract

The utility model provides a drum transmission assembly of a filter-cloth-free vacuum suction filter, which is characterized in that a bearing seat is arranged at the power input end of a drum main shaft, and a rolling bearing is arranged in the bearing seat to carry out rolling support on the drum main shaft; a worm gear is fixedly mounted at the shaft head of the rotary drum main shaft, a worm is erected below the worm gear, a volute is arranged outside the worm gear and the worm for sealing and shielding, and the volute and the bearing seat are independent from each other and are not attached to each other; the volute is formed by splicing an upper volute and a lower volute. Bottom feet of the lower volute are fixedly installed on the volute support and provided with adjusting gaskets in a cushioned mode. According to the rotary drum transmission assembly, when the worm gear and the worm are overhauled and replaced, only the volute needs to be disassembled independently, tedious work such as disassembly and assembly of the bearing seat and hoisting of the rotary drum is not needed, and the work is more time-saving, simpler and more convenient; the installation height of the lower volute can be increased by replacing the thicker adjusting gasket, the meshing clearance between the worm gear and the worm is reduced, and the operation is very convenient.

Description

Technical Field

[0001] The utility model relates to a transmission assembly, in particular to a rotary drum transmission assembly of a vacuum suction filter without filter cloth, belonging to the technical field of solid-liquid separation equipment components. Background Art

[0002] The clothless vacuum filter is widely used in the mud and juice filtering process of the sedimentation tank of the sulfite sugar factory. It has the advantages of no sewage discharge, high production efficiency, low dry mud conversion, and high degree of automation. The clothless vacuum filter is mainly composed of a drum, a mud and juice tank, a juice extraction system, a mud scraper, a stirring device, a washing device, a transmission system and a vacuum distribution device. The transmission assembly of the drum includes: the reduction motor drives the worm to rotate through the chain transmission component, and the worm gear meshing with the worm is fixedly installed on the power input end of the drum main shaft. The drum main shaft is provided with a bearing seat for rotation support. The worm gear driven by the worm drives the drum to rotate in situ. The outside of the worm gear is provided with a volute that buckles up and down for shielding. At the same time, a rotation support component for rotation support of the worm is also installed in the lower volute.

[0003] At present, most of the vacuum filters used in sugar factories are copied by domestic manufacturers with reference to the structure of similar foreign equipment. In the structural design of the drum transmission assembly, at the power input end of the drum main shaft, the upper volute and the upper cover of the bearing seat of the drum main shaft are often cast as a whole, and the lower volute and the lower cover of the bearing seat of the drum main shaft are cast as a whole. The frame is only supported below the lower cover of the bearing seat of the drum main shaft, and the lower part of the lower volute is suspended. There is no rolling bearing or bearing shell in the bearing seat. The bearing seat is directly used as a sliding bearing to slide and rub with the drum main shaft. Figure 4 Although this design has few parts and a simple structure, due to the large size and weight of the drum, after several years of operation, the main shaft and bearing seat of the drum are worn, and the worm wheel sinks with the main shaft of the drum, which will cause the worm to top-tooth, and then cause the worm wheel to wear quickly. It is necessary to overhaul and replace the worn bearing seat and worm wheel as a whole, which is not only uneconomical, but also the whole inspection and maintenance work is troublesome, and even the whole drum needs to be hoisted, which is time-consuming and costly. Utility Model Content

[0004] The utility model aims to provide a drum transmission assembly of a vacuum filter without filter cloth, so as to solve the problem that the bearing seat and the worm gear at the power input end of the drum main shaft in the existing drum transmission assembly are easy to wear and inconvenient to repair and maintain.

[0005] The specific technical solutions adopted by this utility model are as follows:

[0006] A drum transmission assembly of a vacuum filter without filter cloth, wherein an upper and lower split bearing seat is provided at the power input end of the drum main shaft extending to the left, the bearing seat is fixedly mounted on the frame by bolts, a rolling bearing is installed in the bearing seat, the rolling bearing is sleeved on the shaft body of the drum main shaft and rollingly supports it; a worm wheel is fixedly mounted on the shaft head of the drum main shaft on the left side of the bearing seat by key connection, a worm screw meshing with the worm wheel is mounted below the worm wheel, a volute is provided outside the worm wheel and the worm screw for sealing and shielding, and the volute and the bearing seat are independent of each other and do not depend on each other; the volute is composed of an upper volute and a lower volute that are buckled up and down along the horizontal plane of the worm wheel centerline, and a rotating bearing for rotatably supporting the worm screw is installed in the lower volute. Dynamic support assembly, the power input end of the worm extends outward from one side of the lower volute, the bottom surface of the lower volute is provided with a foot, the frame is fixedly connected with a volute support at a position corresponding to the lower part of the lower volute, the foot of the lower volute is fixedly mounted on the top surface of the volute support by bolts, and an adjusting gasket for adjusting the installation height of the lower volute is also provided between the foot of the lower volute and the top surface of the volute support, the upper volute is buckled on the docking flange on the top surface of the lower volute through the docking flange on the bottom surface thereof and is fixed with flange connecting bolts; the frame is fixedly connected with a motor support at a position corresponding to the lower part of the volute support, a reduction motor is fixedly mounted on the motor support, and the main shaft of the reduction motor is connected to the power input end of the worm through a chain drive assembly.

[0007] The drum transmission assembly of the utility model adopts rolling bearings in the bearing seat to rotatably support the drum main shaft, which is more wear-resistant than the previous method of directly using the bearing seat as a sliding bearing, and is easier to replace separately. There will be no phenomenon of sinking of the drum main shaft due to wear, and no rapid wear of the worm gear due to the top teeth. Since the volute and the bearing seat at the power input end of the drum main shaft are independent of each other and do not depend on each other, and a volute support and a frame are provided to respectively support the bottom of the volute and the bearing seat, when the worm gear and the worm gear are inspected and replaced, it is only necessary to remove the volute separately, and there is no need to involve tedious work such as disassembly and assembly of the bearing seat and hoisting and fixing of the drum, so the work is more time-saving and simple. Moreover, when the meshing clearance of the worm gear and the worm gear becomes larger due to work wear, the installation height of the lower volute can be increased by replacing a thicker adjusting gasket, so as to reduce the meshing clearance between the worm gear and the worm gear, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is the front view of the drum transmission assembly.

[0009] Figure 2 for Figure 1 Left view of .

[0010] Figure 3 for Figure 1 Top view of the bowl main shaft, bearing seat and volute section.

[0011] Figure 4It is a front view of an existing drum transmission assembly.

[0012] In the figure: 1-drum main shaft, 2-bearing seat, 3-frame, 4-rolling bearing, 5-worm gear, 6-worm, 7-volute, 7.1-upper volute, 7.2-lower volute, 8-rotating support assembly, 9-volute support, 10-adjusting gasket, 11-motor support, 12-reduction motor, 13-chain drive assembly, 14-bearing retaining ring, 15-worm gear retaining ring, 16-screw-on oil cup, 17-packing seal assembly, 18-bearing end cover, 19-injection oil cup. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with the embodiments and drawings. In the description of the present invention, the directional words "front", "back", "left", "right", "up", and "down" are based on the attached description. Figure 1 The orientation or position relationship shown is only defined to facilitate the description of the present invention, rather than referring to a specific orientation that a device or element must have, and should not be regarded as a limitation to the present invention.

[0014] like Figure 1-3 As shown, the drum transmission assembly of the present non-filter-cloth vacuum filter is provided with an upper and lower split bearing seat 2 at the power input end of the drum main shaft 1 extending to the left, the bearing seat 2 is fixedly mounted on the frame 3 by bolts, a rolling bearing 4 is installed in the bearing seat 2, the rolling bearing 4 is sleeved on the shaft body of the drum main shaft 1 and rollingly supports it; the drum main shaft 1 on the left side of the bearing seat 2 is fixedly mounted with a worm wheel 5 at the shaft head by a key connection, a worm 6 meshing with the worm wheel 5 is mounted below the worm wheel 5, a volute 7 is provided outside the worm wheel 5 and the worm 6 for sealing and shielding, the volute 7 and the bearing seat 2 are independent of each other and are not attached to each other; the volute 7 is composed of an upper volute 7.1 and a lower volute 7.2 that are buckled up and down on the horizontal plane along the center line of the worm wheel 5, and a rotating support assembly 8 for rotating support of the worm 6 is installed in the lower volute 7.2, The power input end of the worm 6 extends outward from one side of the lower volute 7.2, and a foot is provided on the bottom surface of the lower volute 7.2. A volute support 9 is fixedly connected to the frame 3 at a position corresponding to the lower portion of the lower volute 7.2. The foot of the lower volute 7.2 is fixedly mounted on the top surface of the volute support 9 by bolts. An adjusting gasket 10 for adjusting the installation height of the lower volute 7.2 is also provided between the foot of the lower volute 7.2 and the top surface of the volute support 9. The upper volute 7.1 is buckled on the docking flange on the top surface of the lower volute 7.2 through the docking flange on the bottom surface thereof and is fixed with flange connection bolts; a motor support 11 is fixedly connected to the frame 3 at a position corresponding to the lower portion of the volute support 9, and a reduction motor 12 is fixedly mounted on the motor support 11. The main shaft of the reduction motor 12 is connected to the power input end of the worm 6 via a chain drive assembly 13.

[0015] Furthermore, the right and left ends of the inner ring of the rolling bearing 4 are respectively limited by corresponding shoulders on the drum main shaft 1 and a bearing retaining ring 14 fixedly mounted on the drum main shaft 1, thereby positioning the axial position of the rolling bearing 4 on the drum main shaft 1.

[0016] Furthermore, the right and left ends of the inner ring of the worm wheel 5 are respectively limited by corresponding shoulders on the drum main shaft 1 and a worm wheel retaining ring 15 fixedly installed on the left end surface of the drum main shaft 1, thereby positioning the axial position of the worm wheel 5 on the drum main shaft 1.

[0017] Furthermore, the top surface of the volute 7 is provided with a screw-on oil cup 16 for adding oil to the volute 7, the right end plate of the volute 7 is provided with an opening for the drum main shaft 1 to extend into, and the gap between the opening and the drum main shaft 1 is sealed with a packing seal assembly 17 to prevent the lubricating oil inside the volute 7 from leaking out.

[0018] Furthermore, bearing end covers 18 are fixedly installed on the left and right ends of the bearing seat 2 for sealing and pressing the outer ring of the rolling bearing 4. The bearing end cover 18 on one side is also provided with a pressure-injection oil cup 19 for adding grease to the inside of the bearing seat 2.

[0019] Furthermore, the chain transmission assembly 13 is provided with a driving sprocket fixedly connected to the main shaft of the reduction motor 12, a driven sprocket fixedly connected to the power input end of the worm 6, and a transmission chain ring surrounding the driving sprocket and the driven sprocket to form an engagement.

[0020] When the drum transmission assembly needs to overhaul and replace the worm wheel 5 and the worm 6, it is only necessary to remove the volute 7 alone, without disassembling the bearing seat 2 or lifting the drum. When the meshing clearance of the worm wheel 5 and the worm 6 increases due to work wear, the installation height of the lower volute 7.2 can be increased by replacing a thicker adjustment gasket 10, thereby reducing the meshing clearance between the worm wheel 5 and the worm 6, thereby improving the force on the worm wheel 5 and the worm 6 and extending their service life.

[0021] The above-mentioned figures are only typical embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drum transmission assembly of a vacuum filter without filter cloth, characterized by: The drum transmission assembly is provided with an upper and lower split bearing seat (2) at the power input end of the drum main shaft (1) extending to the left. The bearing seat (2) is fixedly mounted on the frame (3) by bolts. A rolling bearing (4) is installed in the bearing seat (2). The rolling bearing (4) is sleeved on the shaft body of the drum main shaft (1) and provides rolling support for the shaft body. A worm gear (5) is fixedly mounted on the shaft head of the drum main shaft (1) on the left side of the bearing seat (2) by key connection. The worm gear (5) is fixedly mounted on the shaft head of the drum main shaft (1) by key connection. ) is provided below the worm (6) meshing therewith, a volute (7) is provided outside the worm wheel (5) and the worm (6) for sealing and shielding, and the volute (7) and the bearing seat (2) are independent of each other and do not depend on each other; the volute (7) is composed of an upper volute (7.1) and a lower volute (7.2) which are buckled up and down along the horizontal plane of the center line of the worm wheel (5), and a rotation support assembly (8) for rotationally supporting the worm (6) is installed in the lower volute (7.2), and the worm ( The power input end of the lower volute (7.2) extends outward from one side of the lower volute (7.2), the bottom surface of the lower volute (7.2) is provided with a foot, the frame (3) is fixedly connected with a volute support (9) at a position corresponding to the lower part of the lower volute (7.2), the foot of the lower volute (7.2) is fixedly mounted on the top surface of the volute support (9) by bolts, and an adjustment pad for adjusting the installation height of the lower volute (7.2) is provided between the foot of the lower volute (7.2) and the top surface of the volute support (9). The upper volute (7.1) is fastened to the docking flange on the top surface of the lower volute (7.2) through the docking flange on the bottom surface thereof and is fixed with flange connecting bolts; the frame (3) is fixedly connected to a motor support (11) at a position below the corresponding volute support (9), a reduction motor (12) is fixedly mounted on the motor support (11), and the main shaft of the reduction motor (12) is connected to the power input end of the worm (6) via a chain drive assembly (13).

2. The drum transmission assembly of the cloth-free vacuum filter according to claim 1 is characterized in that: The right end and the left end of the inner ring of the rolling bearing (4) are respectively limited by corresponding shaft shoulders on the drum main shaft (1) and a bearing retaining ring (14) fixedly mounted on the drum main shaft (1), thereby positioning the axial position of the rolling bearing (4) on the drum main shaft (1).

3. The drum transmission assembly of the cloth-free vacuum filter according to claim 1 is characterized in that: The right end and the left end of the inner ring of the worm wheel (5) are respectively limited by corresponding shaft shoulders on the drum main shaft (1) and a worm wheel retaining ring (15) fixedly mounted on the left end surface of the drum main shaft (1), thereby positioning the axial position of the worm wheel (5) on the drum main shaft (1).

4. The drum transmission assembly of the cloth-free vacuum filter according to claim 1 is characterized in that: The top surface of the volute (7) is provided with a screw-on oil cup (16) for filling oil into the volute (7), the right end plate of the volute (7) is provided with an opening for the main shaft of the drum (1) to extend into, and a packing seal assembly (17) is provided between the opening and the main shaft of the drum (1) for sealing.

5. The drum transmission assembly of the cloth-free vacuum filter according to claim 1 is characterized in that: The left and right ends of the bearing seat (2) are respectively fixedly mounted with bearing end covers (18) for sealing and pressing the outer ring of the rolling bearing (4), and the bearing end cover (18) on one side is also provided with a pressure-injection oil cup (19) for adding grease to the inside of the bearing seat (2).

6. The drum transmission assembly of the clothless vacuum filter according to claim 1 is characterized in that: The chain drive assembly (13) is provided with a driving sprocket fixedly connected to the main shaft of the reduction motor (12), a driven sprocket fixedly connected to the power input end of the worm (6), and a transmission chain ring surrounding the outer periphery of the driving sprocket and the driven sprocket to form a meshing connection.

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