CN214209673U

CN214209673U - Filter spindle for disc type vacuum filter

Info

Publication number: CN214209673U
Application number: CN202022730657.7U
Authority: CN
Inventors: 臧凤龙; 杨晓; 郑军
Original assignee: Laiwu Laixin Iron Mine Co ltd
Current assignee: Laiwu Laixin Iron Mine Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-09-17
Anticipated expiration: 2030-11-23

Abstract

The utility model relates to a disk vacuum filter is with filtering main shaft, belong to the technical field of mining production facility, it includes the main shaft body, be provided with a plurality of distributing pipes along its axial on the surface of main shaft body, the quantity of distributing pipe is unanimous with the cassette quantity on every filter disc, and a plurality of distributing pipes are arranged along the circumference of main shaft body, it is connected with the connecting pipe to slide along its radial on the distributing pipe, be provided with the actuating mechanism who is used for driving the connecting pipe to slide on the distributing pipe, distributing pipe accessible connecting pipe and cassette intercommunication, be provided with on the connecting pipe and be used for controlling filtrating or air by the check valve of cassette to the flowing of distributing pipe direction, the connecting pipe is provided with two at least along the axial of the distributing pipe that corresponds. The method and the device have the effect of meeting the requirements of different raw ore processing amounts.

Description

Filter spindle for disc type vacuum filter

Technical Field

The application relates to the field of mining production equipment, in particular to a filtering main shaft for a disc type vacuum filter.

Background

The disk vacuum filter is a solid-liquid separation device which utilizes vacuum as filtering power to separate solid from liquid of slurry, is applied to the mineral separation industry and can be used for filtering and treating raw ores.

In the related art, chinese utility model patent with publication number CN207532906U discloses a disc type vacuum filter, which comprises a slurry tank, a filtering main shaft and a stirring main shaft, wherein the filtering main shaft and the stirring main shaft are horizontally arranged in the slurry tank, the stirring main shaft is arranged at the bottom of the slurry tank, the filtering main shaft is arranged above the stirring main shaft in parallel, more than two filtering discs are arranged on the filtering main shaft at intervals, the filtering discs are in hollow disc-shaped structures, the surfaces of the filtering discs are provided with filtering holes communicated with a middle cavity, the filtering discs are assembled by a plurality of fan-shaped filtering sheets, each filtering sheet surface is sleeved with a filtering cloth to form a filtering chamber, the filtering sheets can be fixed on the filtering main shaft by fixing pieces such as bolts, and adjacent filtering sheets are fixedly connected by fixing pieces such as bolts, thereby forming a circular filtering disc fixed on the filtering main shaft, the filtering main shaft is provided with tubing respectively communicated with each filtering sheet, the two ends of the main shaft are provided with pipe joints which can be connected with an external vacuum pumping device through a hose; the stirring main shaft is provided with a first stirring blade and a second stirring blade, the first stirring blade and the second stirring blade are spirally arranged on the side surface of the stirring main shaft from one end of the stirring main shaft to the other end of the stirring main shaft, wherein the radius of the first stirring blade is larger than that of the second stirring blade, and the first stirring blade and the second stirring blade are coaxially arranged and are reversely spiral. When using disk vacuum filter, pour into the ore pulp of treating filteration to ore pulp groove bottom, make first stirring vane and the second stirring vane that sets up on it stir the ore pulp through the rotation of stirring main shaft, in order to reduce the sedimentation condition of ore pulp in the ore pulp groove, rotate through filtering the main shaft and make the filter disc rotate, partly contact ore pulp of filter disc, through evacuating device through the piping to the filter chamber evacuation, utilize the moisture in the vacuum negative pressure with the ore pulp to siphon away, make mineral absorption form the filter cake on the filter disc.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: for the concentrating mill, the processing capacity requirements for raw ores are different at different periods, so the filtering capacity requirements for the disc vacuum filter are different, the filtering discs of the disc filter in the related technology are fixedly arranged on the filtering main shaft, and the machine can be started to filter only after all the filtering discs are fixed, so the filtering capacity of one machine is fixed, and the requirements for different raw ore processing capacities cannot be met.

SUMMERY OF THE UTILITY MODEL

In order to meet the requirements of different raw ore treatment capacities, the application provides a filtering main shaft for a disc type vacuum filter.

The application provides a disk vacuum filter adopts following technical scheme with filtering main shaft:

the utility model provides a disk vacuum filter is with filtering main shaft, includes the main shaft body, be provided with a plurality of distributing pipes along its axial on the surface of main shaft body, the quantity of distributing pipe is unanimous with the cassette quantity on every filter disc, and is a plurality of the distributing pipe is arranged along the circumference of main shaft body, it is connected with the connecting pipe to slide along its radial on the distributing pipe, be provided with the actuating mechanism who is used for driving the connecting pipe to slide on the distributing pipe, distributing pipe accessible connecting pipe and cassette intercommunication, be provided with on the connecting pipe and be used for controlling filtrating or air by the check valve that cassette to distributing pipe direction flow, the connecting pipe is provided with two at least along the axial of the distributing pipe that corresponds.

By adopting the technical scheme, when the treatment capacity of raw ores is increased, the filtering capacity demand of the filter is increased, the filter disc can be sleeved outside each distribution pipe, the connecting pipe is driven by the driving mechanism to slide along the radial direction of the distribution pipe, so that the connecting pipe is communicated with the filter sheet, the filter can be started to start filtering work, and filtrate and air can only flow to the distribution pipes from the filter sheet under the action of the one-way valve; when the processing capacity of raw ore is reduced, the filtering capacity demand of the filter is reduced, the filtering discs are connected on the filtering main shaft too much, so that the load of the filter is too heavy, the service life of the filter is shortened, therefore, a part of the filtering discs can be detached from the filtering main shaft, when the filtering disc is detached, the corresponding connecting pipe slides through the driving mechanism, the connecting pipe is far away from the filtering discs, the filtering discs can be detached, filtrate or air flowing to the distributing pipe in other filtering discs cannot leak out through the connecting pipe and can only flow in the distributing pipe under the action of the one-way valve, the filter can still perform filtering work through other filtering discs connected with the distributing pipe, the number of the filtering discs can be flexibly increased or reduced according to the actual situation, and the requirements of different raw ore processing capacities are met.

Optionally, the driving mechanism is provided with at least two along the axial of main shaft body, and the quantity is unanimous with every connecting pipe quantity on the distributing pipe, driving mechanism all is connected with every distributing pipe that sets up along the circumference of main shaft body to the connecting pipe synchronous slip on the different distributing pipes of drive.

Through adopting above-mentioned technical scheme, actuating mechanism can drive the connecting pipe on the different distributing pipes and slide in step, can accomplish a plurality of connecting pipes and be connected with a plurality of cassette filters on a filter disc that correspond after sliding in step through a drive, the simple operation is used manpower sparingly.

Optionally, the driving mechanism includes a housing, a driven bevel gear, at least three driving bevel gears and a plurality of sliding blocks, the housing is sleeved on the outer surface of each distribution pipe, the driving bevel gear and the driven bevel gear are both arranged inside the housing, the driving bevel gear is connected with the housing in a radial rotation manner around the main shaft body, the driven bevel gear is connected with the housing in a coaxial rotation manner and meshed with the driving bevel gear, one side of the driven bevel gear, which is far away from the driving bevel gear, is provided with a planar thread, the sliding blocks are meshed with the planar thread and connected with the housing in a radial sliding manner along the main shaft body, the number of the sliding blocks is consistent with that of the connecting pipes, and the sliding blocks are connected with the corresponding connecting pipes.

Through adopting above-mentioned technical scheme, rotate one of them initiative bevel gear, because initiative bevel gear and driven bevel gear meshing, consequently driven bevel gear rotates thereupon, because the last plane screw thread of having seted up of driven bevel gear, slider and plane thread engagement, and under the restriction of shell, the slider can be followed the radial of main shaft body and slided to the connecting pipe that drives to correspond slides, has realized the actuating action that actuating mechanism slided a plurality of connecting pipes in step.

Optionally, a through hole is formed in the shell along the radial direction of the main shaft body, the through hole is rotatably connected with a hand wheel, and the hand wheel is coaxially connected with the driving bevel gear.

Through adopting above-mentioned technical scheme, the setting of hand wheel has realized that the rotation of drive bevel gear and shell is connected, and is convenient for the staff to rotate drive bevel gear.

Optionally, a sliding groove is formed in one side, close to the plane thread, of the shell along the radial direction of the main shaft body, and the sliding block is connected with the sliding groove in a sliding mode.

Through adopting above-mentioned technical scheme, the setting in groove that slides has played certain restriction effect to the direction of sliding of slider, and the slider is connected with sliding of groove that slides and has been realized slider and shell and be connected.

Optionally, a plurality of mounting holes have radially been seted up along it on the distributing pipe, the connecting pipe slides with the pore wall of the mounting hole that corresponds and is connected, the one end coaxial coupling that the filter disc was kept away from to the connecting pipe has sealed the pad, but sealed pad and distributing pipe are close to the inner wall butt of mounting hole.

Through adopting above-mentioned technical scheme, the connecting pipe is connected with sliding of the pore wall of mounting hole, has realized that the connecting pipe is connected with sliding of distributing pipe, but sealed the inboard wall butt that fills up and distributing pipe are close to the mounting hole, should set up and play certain restriction to the distance of sliding of connecting pipe, has also improved the leakproofness of distributing pipe with the connecting pipe, has reduced revealing of filtrating or air.

Optionally, the filter disc is provided with an installation pipe in a communicated manner, the connection pipe is matched with the installation pipe in a pluggable manner, an elastic locking pad is arranged on the inner wall of the installation pipe, one end of the connection pipe, which is far away from the distribution pipe, is coaxially connected with a butting ring, one side, which is close to the distribution pipe, of the butting ring and the locking pad can be abutted, and one side, which is far away from the inner wall of the installation pipe, of the locking pad can be abutted against the connection pipe.

Through adopting above-mentioned technical scheme, the intercommunication setting of connecting pipe and cassette has been realized in the grafting cooperation of connecting pipe and installation pipe, when the connecting pipe that slides made the connecting pipe insert in the installation pipe, the butt ring is earlier with elastic locking pad one side butt that is close to the distributing pipe, because the locking pad is elasticity, continue the connecting pipe that slides, the locking pad produces the deformation under the extrusion of butt ring, one side of keeping away from the distributing pipe is filled up to the slip of butt ring to the locking, the locking pad does not receive the effect reconversion of extrusion force, one side butt that butt ring and locking pad are close to each other, and the locking pad is kept away from one side and the connecting pipe butt of installation inside wall, the grafting cooperation of connecting pipe and installation pipe has been realized, and the setting of locking pad has improved the connection leakproofness of connecting pipe and.

Optionally, the mounting pipe is connected with a locking bolt in a threaded manner, and the locking bolt can be abutted to the connecting pipe.

Through adopting above-mentioned technical scheme, locking bolt and installation pipe threaded connection to but with the connecting pipe butt, increased the joint strength of connecting pipe and installation pipe.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the treatment capacity of raw ore is increased, the filtering capacity demand of the filter is increased, the filter disc can be sleeved outside each distribution pipe, the connecting pipe is driven by the driving mechanism to slide along the radial direction of the distribution pipe, so that the connecting pipe is communicated with the filter sheet, the filter can be started to start filtering work, and filtrate and air can only flow to the distribution pipes from the filter sheet under the action of the one-way valve; when the processing capacity of raw ores is reduced, the filtering capacity demand of the filter is reduced, and the filter discs are connected on the filtering main shaft too much, so that the load of the filter is too heavy, and the service life of the filter is shortened;

2. the driving mechanism can drive the connecting pipes on different distributing pipes to synchronously slide, and the connecting pipes can synchronously slide and then be connected with the plurality of filter sheets on the corresponding filter disc through one-time driving, so that the operation is convenient and fast, and the labor is saved;

3. the connecting pipe is connected with sliding of the pore wall of the mounting hole, sliding connection of the connecting pipe and the distributing pipe is achieved, the sealing gasket and the distributing pipe can be abutted to each other on the inner wall close to the mounting hole, certain limiting effect is achieved on the sliding distance of the connecting pipe due to the arrangement, the sealing performance of the distributing pipe and the connecting pipe is also improved, and leakage of filtrate or air is reduced.

Drawings

FIG. 1 is a schematic view of an embodiment of the present application assembled with a filter tray;

FIG. 2 is a schematic diagram of a portion of an embodiment of the present application;

FIG. 3 is a cross-sectional view of a housing of an embodiment of the present application;

FIG. 4 is a schematic view of the assembly of the distribution pipe, the connecting pipe and the filter sheet according to the embodiment of the present application;

fig. 5 is a sectional view of a connection pipe, a distribution pipe, and an installation pipe according to an embodiment of the present invention.

Description of reference numerals: 100. a main shaft body; 200. a distribution pipe; 210. mounting holes; 300. a filter disc; 310. installing a pipe; 311. a locking pad; 312. locking the bolt; 400. a connecting pipe; 410. a gasket; 420. a butting ring; 500. a drive mechanism; 510. a housing; 511. a through hole; 512. a sliding groove; 520. a driven bevel gear; 521. a planar thread; 530. a drive bevel gear; 540. a slider; 550. a hand wheel; 600. a one-way valve.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a filter spindle for a disc type vacuum filter. Referring to fig. 1, the filtering spindle includes a spindle body 100, a plurality of distribution pipes 200 are disposed on an outer surface of the spindle body 100, at least two connection pipes 400 are disposed on the distribution pipes 200 along an axial direction thereof, one end of each connection pipe 400 is communicated with the distribution pipe 200, and the other end is communicated with a filter 300.

Each distribution pipe 200 is welded on the main shaft body 100 along the axial direction of the main shaft body 100, and a plurality of distribution pipes 200 are arranged along the circumferential direction of the main shaft body 100, and the number of the distribution pipes 200 is the same as that of the filter sheets 300 on each filter disc.

Referring to fig. 2, at least two mounting holes 210 are formed in the distribution pipe 200 along the radial direction thereof, the number of the mounting holes 210 is the same as that of the connecting pipes 400, and the connecting pipes 400 are slidably connected to the hole walls of the corresponding mounting holes 210, so as to slidably connect the connecting pipes 400 to the corresponding distribution pipe 200.

Referring to fig. 2 and 3, at least two driving mechanisms 500 are disposed along the axial direction of the main shaft body 100, and can be used for driving the connecting pipes 400 to slide, and the number of the driving mechanisms 500 is the same as the number of the connecting pipes 400 on each distribution pipe 200. The driving mechanism 500 is connected with each distribution pipe 200, and is used for driving the connecting pipes 400 on different distribution pipes 200 to synchronously slide, so that the operation convenience of workers is improved.

The drive mechanism 500 comprises a housing 510, the housing 510 being fitted over the outer surface of each dispensing tube 200. A through hole 511 is formed in the housing 510 along the radial direction of the main shaft body 100, a hand wheel 550 is further arranged on the housing 510, the hand wheel 550 is rotatably connected with the through hole 511 and can penetrate through the through hole 511 to enter the housing 510, and a driving bevel gear 530 is coaxially welded at one end of the hand wheel 550 located in the housing 510.

The drive bevel gear 530 is provided with at least three to improve stability of the driving mechanism 500. In this embodiment, three driving bevel gears 530 and three handwheels 550 are adopted, and the handwheels 550 can be used for driving the driving bevel gears 530 to rotate, so that the operation convenience of workers is improved. A driven bevel gear 520 is also coaxially and rotatably connected to the inside of the housing 510, and a drive bevel gear 530 is engaged with one side of the driven bevel gear 520 to drive the driven bevel gear 520 to rotate.

One side of the shell 510 far away from the driving bevel gear 530 is provided with a plurality of sliding grooves 512 along the radial direction of the main shaft body 100, each sliding groove 512 is connected with a sliding block 540 in a sliding manner, and the sliding grooves 512 can play a certain limiting role in the sliding direction of the sliding blocks 540, so that the sliding blocks 540 are connected with the shell 510 in a sliding manner.

The driven bevel gear 520 is provided with a plane thread 521 at one side far away from the driving bevel gear 530, the plane thread 521 is meshed with the slider 540, and the slider 540 can be driven to slide when the driven bevel gear 520 rotates. The number of the sliding blocks 540 is the same as that of the connecting pipes 400, and the sliding blocks 540 are welded to the corresponding connecting pipes 400 to drive the connecting pipes 400 to slide.

Referring to fig. 4, the filter sheet 300 is communicated with a mounting tube 310, and one end of the mounting tube 310, which is far away from the filter sheet 300, is in plug-in fit with the connecting tube 400, so as to communicate the connecting tube 400 with the filter sheet 300.

Referring to fig. 4 and 5, a butt ring 420 is coaxially welded to one end of the connecting pipe 400 far away from the distribution pipe 200, an elastic locking pad 311 is bonded to the inner wall of the mounting pipe 310, the locking pad 311 is a rubber pad, the butt ring 420 and the locking pad 311 can butt against each other at the side close to each other, and the locking pad 311 can butt against the connecting pipe 400 at the side far away from the inner wall of the mounting pipe 310, so as to improve the connection sealing performance between the connecting pipe 400 and the mounting pipe 310.

The mounting tube 310 is further connected with a locking bolt 312 in a threaded manner, and the locking bolt 312 can penetrate through the wall of the mounting tube 310 along the radial direction of the mounting tube 310 to abut against the connecting tube 400, so that the connecting strength between the connecting tube 400 and the mounting tube 310 is increased.

The connecting pipe 400 is welded with a check valve 600 for controlling the flow direction of the filtrate and air in the distribution pipe 200, which is the direction from the filter 300 to the distribution pipe 200.

One end of the connecting pipe 400, which is far away from the filter disc, is coaxially bonded with a sealing gasket 410, the sealing gasket 410 is a rubber gasket, and the sealing gasket 410 and the inner wall of the distribution pipe 200, which is close to the mounting hole 210, can be abutted to limit the sliding distance of the connecting pipe 400, and the sealing performance of the connecting pipe 400 and the distribution pipe 200 is improved.

The implementation principle of the filtering spindle for the disc type vacuum filter in the embodiment of the application is as follows: the staff can carry out the installation of the filter disc of different quantity according to the demand of the crude ore handling capacity of different periods.

When the processing capacity of the raw ore is increased, the number of the filter discs needs to be increased, the staff sleeves the filter discs outside the distribution pipes 200, rotates the hand wheel 550 to drive the driving bevel gear 530 to rotate, thereby driving the driven bevel gear 520 to rotate, further driving the sliding block 540 to slide along the radial direction of the main shaft body 100, and driving the connecting pipe 400 to slide when the sliding block 540 slides.

The connection pipe 400 is moved in a direction to approach the mounting pipe 310 until the connection pipe 400 is inserted into the mounting pipe 310, and the abutment ring 420 first abuts on the side of the elastic locking pad 311 that is close to the distribution pipe 200. The connecting tube 400 continues to slide, the locking pad 311 deforms under the pressure of the abutting ring 420 until the abutting ring 420 slides to the side of the locking pad 311 far away from the distribution tube 200, and the locking pad 311 returns to the original state without the pressure. The abutting ring 420 abuts against the side of the locking pad 311 close to each other, and the side of the locking pad 311 away from the inner wall of the mounting pipe 310 abuts against the connecting pipe 400, while the packing 410 abuts against the inner wall of the distribution pipe 200 close to the mounting hole 210. Then, the locking bolt 312 is screwed to bring the locking bolt 312 into contact with the connecting pipe 400, and the connecting pipe 400 completes the connection between the filter 300 and the distribution pipe 200. At this time, the filter 300 is communicated with the corresponding distribution pipe 200, that is, the filter is turned on to start the filtering operation, and the filtrate or air can flow only from the filter 300 to the distribution pipe 200 by the check valve 600 of the corresponding connection pipe 400.

When the processing capacity of raw ore is reduced, the number of the filter discs needs to be reduced, and a worker can detach a part of the filter discs from the filter spindle so as to reduce the influence of the overweight load of the filter on the service life of the filter. When detaching, the locking bolt 312 is loosened so that the locking bolt 312 is away from the connection pipe 400. Then, the handwheel 550 is rotated, so that the driving bevel gear 530 rotates to drive the driven bevel gear 520 to rotate, and the slider 540 drives the connecting pipe 400 to move in a direction away from the filter 300. The abutting ring 420 generates extrusion force for the locking pad 311, so that the locking pad 311 deforms, the resistance to sliding of the connecting pipe 400 is reduced, the connecting pipe 400 continues to slide, the connecting pipe 400 is far away from the filter disc, and the filter disc can be taken down. When the filter is turned on, the filtrate or air flowing to the distribution pipe 200 from the other filter discs cannot leak from the connection pipe 400 under the action of the one-way valve 600, and can only flow through the distribution pipe 200, and the filter can still perform filtering operation through the other filter discs connected to the distribution pipe 200.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a disk vacuum filter is with filtering main shaft which characterized in that: comprises a main shaft body (100), a plurality of distributing pipes (200) are arranged on the outer surface of the main shaft body (100) along the axial direction thereof, the number of the distributing pipes (200) is the same as the number of the filter sheets (300) on each filter disc, and a plurality of the distribution pipes (200) are arranged along the circumferential direction of the main shaft body (100), the distribution pipes (200) are connected with connecting pipes (400) along the radial direction in a sliding manner, the distributing pipe (200) is provided with a driving mechanism (500) for driving the connecting pipe (400) to slide, the distribution pipe (200) can be communicated with the filter sheet (300) through a connecting pipe (400), the connecting pipe (400) is provided with a one-way valve (600) for controlling the flow of the filtrate or the air from the filter disc (300) to the distribution pipe (200), the number of the connecting pipes (400) is at least two along the axial direction of the corresponding distributing pipe (200).

2. A filter spindle for a disc vacuum filter according to claim 1, wherein: the axial of actuating mechanism (500) along main shaft body (100) is provided with two at least, and quantity and every connecting pipe (400) quantity on distribution pipe (200) is unanimous, actuating mechanism (500) all is connected with every distribution pipe (200) that set up along the circumference of main shaft body (100) to connecting pipe (400) synchronous slip on the different distribution pipes of drive (200).

3. A filter spindle for a disc vacuum filter according to claim 2, wherein: the driving mechanism (500) comprises a shell (510), a driven bevel gear (520), at least three driving bevel gears (530) and a plurality of sliding blocks (540), the shell (510) is sleeved on the outer surface of each distribution pipe (200), the driving bevel gears (530) and the driven bevel gears (520) are arranged inside the shell (510), the driving bevel gears (530) are connected with the shell (510) in a radial rotating mode around the spindle body (100), the driven bevel gears (520) are coaxially connected with the shell (510) in a rotating mode and meshed with the driving bevel gears (530), one side, away from the driving bevel gears (530), of each driven bevel gear (520) is provided with a plane thread (521), the sliding blocks (540) are meshed with the plane threads (521) and connected with the shell (510) in a sliding mode along the radial direction of the spindle body (100), the number of the sliding blocks (540) is consistent with the number of the connecting pipes (400), and the sliding blocks (540) are connected with the corresponding connecting pipes (400).

4. A filter spindle for a disc vacuum filter according to claim 3, wherein: a through hole (511) is formed in the shell (510) along the radial direction of the main shaft body (100), a hand wheel (550) is rotatably connected to the through hole (511), and the hand wheel (550) is coaxially connected with the driving bevel gear (530).

5. A filter spindle for a disc vacuum filter according to claim 3, wherein: one side of the shell (510) close to the plane thread (521) is provided with a sliding groove (512) along the radial direction of the main shaft body (100), and the sliding block (540) is connected with the sliding groove (512) in a sliding manner.

6. A filter spindle for a disc vacuum filter according to claim 1, wherein: a plurality of mounting holes (210) have been seted up along its radially on distributing pipe (200), connecting pipe (400) slide with the pore wall of the mounting hole (210) that corresponds and be connected, the one end coaxial coupling that filter disc was kept away from in connecting pipe (400) has sealed pad (410), but sealed pad (410) and distributing pipe (200) are close to the inner wall butt of mounting hole (210).

7. A filter spindle for a disc vacuum filter according to claim 1, wherein: the intercommunication is provided with installation pipe (310) on cassette (300), connecting pipe (400) and installation pipe (310) can peg graft the cooperation, be provided with elastic locking pad (311) on the inner wall of installation pipe (310), the one end coaxial coupling that distributing pipe (200) were kept away from in connecting pipe (400) has butt ring (420), but one side butt that butt ring (420) and locking pad (311) are close to each other, one side and connecting pipe (400) butt that installation pipe (310) inner wall was kept away from in locking pad (311).

8. The filter spindle for a disc vacuum filter of claim 7, wherein: the mounting pipe (310) is connected with a locking bolt (312) in a threaded mode, and the locking bolt (312) can be abutted to the connecting pipe (400).