CN212818527U

CN212818527U - Regular polygon center shaft of multi-disc thickener

Info

Publication number: CN212818527U
Application number: CN202020890623.1U
Authority: CN
Inventors: 刘建坡; 刘建涛; 任福军
Original assignee: Zhengzhou Leizhan Technology Paper Machinery Co Ltd
Current assignee: Zhengzhou Leizhan Technology Paper Machinery Co Ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-03-30
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a concentrated quick-witted regular polygon center pin of many discs, including the center pin, the filtrating runner of evenly having arranged along the circumferencial direction on the center pin, and the filtrating runner is linked together with the sector plate chamber way on the corresponding disc respectively, has improved the distribution treatment effect to turbid filtrating and clear filtrating. The utility model discloses a center shaft includes a conical core shaft, a plurality of bending plates are evenly distributed and fixed on the peripheral surface of the conical core shaft along the circumferential direction, and the length of each bending plate is extended and arranged along the axial direction of the conical core shaft; independent conical inclined filtrate flow channels are formed between each bending plate and the peripheral surface of the conical mandrel. The utility model discloses the filtrating runner that forms is toper tilting filtrating runner, has improved the rivers patency in the filtrating runner.

Description

Regular polygon center shaft of multi-disc thickener

Technical Field

The utility model relates to a concentrated machine technical field of many discs in the papermaking equipment, concretely relates to concentrated machine regular polygon center pin of many discs.

Background

The multi-disc thickener is mainly used for thickening and washing slurry of a slurry line, the slurry flows into the slurry inlet box through the slurry inlet pipe, and then the slurry enters the slurry tank in an overflow mode. When the central shaft rotates, the fan-shaped plates (the disk is formed by combining the fan-shaped plates and is in a disc shape) on the disk are immersed in the slurry under the atmospheric pressure, the separation of the slurry is realized by the filter medium, the vacuum is gradually formed inside the water leg, the slurry layer adsorbed on the surface of the fan-shaped plates is thinner at the moment, a large amount of solid matters of fine fibers and fillers still exist in the filtered filtrate, and the filtrate has higher concentration and is called turbid filtrate. With the continuous operation of the sector plate, the pulp layer on the sector plate becomes thicker gradually, and at the moment, the pulp layer plays a good role of filtering media, a large amount of fine solid matters can be intercepted, the quality of the filtrate is improved gradually, and the filtrate in the area is called as clear filtrate; the pulp layer is thickened along with the rotation of the fan-shaped plate, when the fan-shaped plate rotates out of the liquid surface, the dehydration is continued under the action of vacuum, the dryness of the pulp layer is further improved, then the pulp layer enters an atmospheric region, and when the edge of the fan-shaped plate is stripped by the slurry stripping water, the pulp layer forms self-rolling under the action of self gravity and falls into the pulp tank. The pulp enters a pulp tank through spiral conveying, the sector plates with the peeled pulp layer are transferred to a net washing area, and the next filtration cycle is carried out after washing.

The central shaft is used as a flow channel of filtrate of the multi-disc concentrator and is communicated with a cavity channel of the fan-shaped plate on the disc, and the filtered filtrate enters the central shaft along the cavity channel formed by the fan-shaped plate and the filter screen, is collected to the filtrate distribution valve and then flows to the filtrate pool through an outlet of the distribution valve.

The invention with the publication number of CN204780442U discloses a multi-disc dewatering device, which comprises a base, a machine shell arranged on the base, a main motor fixed at one end of the base, a hollow main shaft connected with the output end of the main motor, a plurality of filter discs sleeved outside the hollow main shaft, a spraying device arranged on the inner wall surface of the upper part of the machine shell, and a filtrate distribution valve fixedly connected with the end part of the hollow main shaft, wherein the filtrate distribution valve comprises a circular table, a hollow cylindrical boss arranged in the middle of the circular table, and two fan-shaped filter discs, two fan-shaped notches are arranged on the circular table, the fan-shaped filter discs are in abutting connection with the circular table and cover the fan-shaped notches, and a plurality of through holes. The vacuum degree can be promoted mildly in advance and slowly, and the slurry layer can be better attached to the filter disc; meanwhile, the processing capacity of the multi-disc dehydration device is improved by more than 30 percent.

In the scheme, a hollow center shaft structure is adopted, so that the distribution treatment effect on turbid filtrate and clear filtrate is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a polygon center pin of a multi-disc thickener for solving the defects in the prior art.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a regular polygon central shaft of a multi-disc concentrator comprises a central shaft, filtrate runners are uniformly distributed on the central shaft along the circumferential direction, and the filtrate runners are respectively communicated with cavity channels of sector plates on corresponding discs.

The central shaft comprises a conical mandrel part, and the conical mandrel part is a small-diameter end at one end facing a filtrate distribution valve of the multi-disc concentrator; a plurality of bending plates are uniformly distributed and fixed on the peripheral surface of the conical mandrel part along the circumferential direction, and the length of each bending plate extends along the axial direction of the conical mandrel part; and independent conical inclined filtrate channels are respectively formed between each bending plate and the outer peripheral surface of the conical mandrel part, a filtrate inlet group communicated with the conical inclined filtrate channels is arranged on the radial outer side surface of each bending plate positioned on the conical mandrel part, each filtrate inlet group comprises a plurality of filtrate inlets which are arranged at intervals along the axial direction, the filtrate inlets are arranged corresponding to the discs of the multi-disc concentrator, and the filtrate inlets are communicated with the fan-shaped plate channels on the corresponding discs.

The bending plate is also correspondingly provided with a fixing hole for fixing the sector plate on the disc at the radial outer side surface of the conical core shaft part.

The two fixed holes are in a group and correspond to the filtrate inlets one by one.

And corresponding to the fixing holes, locking nuts are fixedly arranged on the inner sides of the bending plates.

And a rotating shaft is fixedly arranged at the central axis of the conical core shaft part in a penetrating manner.

The conical core shaft part is formed by welding a conical cylinder and sealing plates arranged at two axial ends of the conical cylinder.

The bending plate is an L-shaped panel with an L-shaped section and consists of a vertical part and a horizontal part; the vertical part is fixedly connected with the outer peripheral surface of the conical core shaft part along the radial direction of the conical core shaft part, and the horizontal part is fixedly lapped on the adjacent L-shaped panel.

The utility model has the advantages that:

the utility model discloses evenly arrange the filtrating runner along the circumferencial direction on the center pin, and the filtrating runner is linked together with the sector plate chamber way on the corresponding disc respectively, has improved the distribution treatment effect to turbid filtrating and clear filtrating.

The utility model discloses the epaxial filtrating runner of center is through evenly arranging fixed a plurality of board of bending and forming along the circumferencial direction on toper dabber portion outer peripheral face, and its processing is simple, stable in structure to the filtrating runner of formation is toper tilting filtrating runner, has improved the rivers patency in the filtrating runner. When the filter disc is installed, the fan-shaped plate of the disc is correspondingly installed at a filtrate inlet, filtered filtrate enters the conical inclined filtrate flow channel from the filtrate inlet along a cavity formed by the fan-shaped plate and the filter screen, and then the filtrate is quickly collected to the distribution valve along the conical inclined filtrate flow channel.

The utility model is an L-shaped panel with L-shaped section, which is composed of a vertical part and a horizontal part; the vertical part is fixedly connected with the outer peripheral surface of the conical core shaft part along the radial direction of the conical core shaft part, and the horizontal part is fixedly lapped on the adjacent L-shaped panel, so that a regular polygon central shaft is formed, the outer peripheral surface of the regular polygon central shaft is composed of a plurality of planes, and the planes are provided with fixing holes, so that the disc is simply and reliably connected with the fan-shaped plates of the disc.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic view of the tapered mandrel portion of FIG. 1

FIG. 4 is a schematic longitudinal cross-sectional view of FIG. 3;

FIG. 5 is a schematic view of the bending plate in FIG. 1;

FIG. 6 is a schematic longitudinal cross-sectional view of FIG. 1;

FIG. 7 is a schematic cross-sectional view of the present invention installed in a multi-disc thickener;

FIG. 8 is a schematic longitudinal sectional view of the multi-disc thickener according to the present invention;

FIG. 9 is a schematic view of the filtrate distribution valve of FIG. 7 with the end plate of the housing removed;

FIG. 10 is a front view of FIG. 9;

FIG. 11 is a schematic view of the interior of the vent on the filtrate distribution valve of FIG. 10;

FIG. 12 is an enlarged view of the filtrate distribution valve position of FIG. 8;

FIG. 13 is a schematic view of the sleeve holder of FIG. 12;

fig. 14 is a perspective view of the sleeve holder.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1 to 8, the present embodiment discloses a regular polygonal central shaft of a multi-disc concentrator, which includes a tapered spindle portion 7, and the tapered spindle portion 7 is a small diameter end at an end facing a filtrate distribution valve of the multi-disc concentrator; a plurality of bending plates 8 are uniformly distributed and fixed on the outer peripheral surface of the conical mandrel part 7 along the circumferential direction, and the length of each bending plate 8 extends along the axial direction of the conical mandrel part 7; an independent conical inclined filtrate runner 81 is formed between each bent plate 8 and the outer peripheral surface of the conical mandrel part, the conical inclined filtrate runner 81 is closed at a small opening end, is open at a large opening end, and is connected with the filtrate distribution valve 10 at the large opening end.

And each bending plate 8 is provided with a filtrate inlet group communicated with a conical inclined filtrate channel 81 on the radial outer side surface of the conical mandrel part, the filtrate inlet group comprises a plurality of filtrate inlets 82 which are arranged at intervals along the axial direction, the filtrate inlets 82 are arranged corresponding to the discs of the multi-disc concentrator, and the filtrate inlets 82 are communicated with the sector plate channels on the corresponding discs.

In order to facilitate the installation and fixation of the disk on the central shaft, the bending plate 8 is also correspondingly provided with a fixing hole 83 for fixing the fan-shaped plate on the disk 2 at the radial outer side surface of the tapered mandrel part 7. The fixing holes 83 are provided in a set of two, one-to-one correspondence with the filtrate inlets 82.

In this embodiment, a locking nut 84 is fixedly disposed on the inner side of the bending plate 8 corresponding to the fixing hole 83, so as to facilitate locking and fixing of the sector plate.

In this embodiment, the tapered spindle portion 7 is formed by welding a tapered cylinder 71 and seal plates 72 disposed at two axial ends of the tapered cylinder 71, and a rotating shaft 73 is fixedly inserted through a central axis of the tapered spindle portion 7.

In this embodiment, the bending plate 8 is an L-shaped panel having an L-shaped cross section, and is composed of a vertical portion and a horizontal portion; the vertical part is fixedly connected with the outer peripheral surface of the conical core shaft part 7 along the radial direction of the conical core shaft part 7, and the horizontal part 5 is fixedly lapped on the adjacent L-shaped panel. The filtrate inlet 82 and the fixing hole 83 are both provided at the horizontal portion.

The utility model discloses formed regular polygon center pin, its peripheral face is that a plurality of planes constitute, and plane department is equipped with the fixed orifices, and is succinct reliable with being connected of the sector plate of disc 2.

The utility model discloses the epaxial filtrating runner of center is through evenly arranging fixed a plurality of board of bending and forming along the circumferencial direction on 7 outer peripheral faces of toper dabber portion, and its processing is simple, stable in structure to the filtrating runner of formation is toper tilting filtrating runner, has improved the rivers patency in the filtrating runner. When the filter disc is installed, the sector plate of the disc 2 is correspondingly installed at the filtrate inlet 82 and is fixed through the bolt penetrating through the fixing hole 83, filtered filtrate enters the conical inclined filtrate flow channel 81 from the filtrate inlet 82 along the cavity formed by the sector plate and the filter screen, and then the filtrate is quickly collected to the filtrate distribution valve 10 along the conical inclined filtrate flow channel 81.

As shown in fig. 7 to 14, the present embodiment also discloses the structure and principle of the filtrate distribution valve 10.

The central shaft 7 is provided with disk plates 2 arranged along the axial direction, and the disk plates 2 are formed by combining sector plates and are shaped like a disk. The sector plate is provided with a filter screen, and a cavity channel is formed in the sector plate. The filtrate distribution valve 10 is provided on the side of the shaft-extending end of the central shaft and is installed outside the vat 100 of the multi-disc thickener.

The filtrate distribution valve 10 comprises a distribution valve housing 101, the distribution valve housing 101 is open at the side facing the slurry tank 100 and is fixedly connected with the slurry tank 100 in a sealing way, so that the inner cavity of the distribution valve housing 101 is communicated with the conical inclined filtrate flow channel 81 of the central shaft.

The inner cavity of the distribution valve housing 101 is provided with a distribution plate 102 arranged along the central axis in the radial direction, the radial length of the distribution plate 102 exceeds the conical inclined filtrate flow channel on the central axis, and the distribution plate 102 is connected with a distribution plate driving mechanism for driving the distribution plate to rotate along the central axis.

In this embodiment, the distribution piece driving mechanism includes a distribution piece driving telescopic rod 103 which inclines downward and points to the distribution piece, the distribution piece driving telescopic rod 103 is connected with the distribution piece 102 through a connecting rod assembly, and the distribution piece driving telescopic rod 103 stretches and retracts to drive the distribution piece 102 to rotate within a certain angle range.

The lower part of the distribution valve shell 101 is communicated with two water legs which are arranged left and right, namely a turbid filtrate water leg 104 and a clear filtrate water leg 105, and respectively receive turbid filtrate and clear filtrate distributed by the distribution valve; the distribution piece 102 rotates to adjust the distribution ratio of the filtrate guided to the two water legs.

In this embodiment, the distribution plate 102 is located in the lower half of the inner cavity of the distribution valve housing 101. The distribution piece 102 is an L-shaped structure that includes a radially straight segment and an arcuate segment connected to the radially outer end of the straight segment. A vertically arranged sealing plate 106 is provided between the turbid filtrate water leg 104 and the clear filtrate water leg 105, the sealing plate 106 being in sealing contact engagement with the arcuate section of the distribution sheet 102.

The sealing plate 106 is arranged at one side of the turbid filtrate water leg 104 in a deviation manner, and the sealing plate 106 is connected with the turbid filtrate water leg 104 and the clear filtrate water leg 105 through the guide plate 1061, so that clear filtrate received by the clear filtrate water leg 105 is more, and the working principle of the multi-disc concentrator is adapted.

The upper half part of the inner cavity of the distribution valve shell 101 is provided with an exhaust device, the exhaust device comprises an exhaust chamber 107 with a fixed position, an arc-shaped window is arranged on the exhaust chamber, the arc-shaped window corresponds to a plurality of conical inclined filtrate flow channels on the upper part, so that the conical inclined filtrate flow channels are communicated with the exhaust chamber through the arc-shaped window, and the exhaust chamber is also provided with an exhaust pipe 108 which is horizontally arranged.

In this embodiment, the exhaust chamber 107 is an arc-shaped structure, and a radial partition plate is arranged in the exhaust chamber to divide the exhaust chamber into two exhaust chambers, wherein one exhaust chamber has a larger arc length and is a large exhaust chamber 1071, and the other exhaust chamber has a smaller arc length and is a small exhaust chamber 1072, and the large exhaust chamber has a higher height; the radial partition plate is also provided with a channel 1070, so that the large exhaust chamber 1071 is communicated with the small exhaust chamber 1072; the exhaust pipe 108 is connected to the large exhaust chamber.

Arc windows are arranged in the large exhaust chamber 1071 and the small exhaust chamber 1072, and the arc length of the arc window 1073 of the large exhaust chamber is larger than that of the arc window 1074 of the small exhaust chamber.

As shown in fig. 6, when the central shaft rotates counterclockwise, the gas-water mixture is located in the tapered inclined filtrate flow channel at the upper part of the central shaft, the gas-water mixture enters the large exhaust chamber through the arc window 1073 of the large exhaust chamber 1071 via the corresponding tapered inclined filtrate flow channel, is discharged through the exhaust pipe 108, continues to rotate, the tapered inclined filtrate flow channel rotates to the small exhaust chamber 1072, the residual gas contained in the filtrate enters the small exhaust chamber through the arc window 1074 of the small exhaust chamber 1072, then enters the large exhaust chamber 1071 via the channel 1070 on the radial partition plate, and is discharged from the exhaust pipe 108.

The upper half part of the inner cavity of the distributing valve shell is provided with the exhaust device, when the fan plate is immersed in the slurry, the filtrate enters the cavity channel of the fan plate and the filtrate channel of the central shaft, and the displaced atmosphere is effectively exhausted through the exhaust device of the filtrate distributing valve.

The arc window of the large exhaust chamber 1071 is further provided with an adjusting baffle matched with the sliding guide, and the adjusting baffle 1070 is connected with an adjusting baffle driving mechanism for driving the adjusting baffle to move along the arc window, so that the length of the arc window of the large exhaust chamber 1071 can be adjusted. The adjusting baffle driving mechanism comprises an adjusting baffle driving telescopic rod 1075 which inclines upwards and points to the adjusting baffle, and the adjusting baffle driving telescopic rod 1075 is connected with the adjusting baffle through a connecting rod assembly.

In this embodiment, the two ends of the rotating shaft 73 are respectively provided with a bearing block 730 for supporting, the rotating shaft on one side of the filtrate distribution valve 10 is provided with a sleeve support 109, the sleeve support 109 comprises a cylinder 1091 axially sleeved on the rotating shaft, the cylinder 1091 is provided with a bearing cover 1092 at one end of the bearing block, the bearing cover 1092 is fixedly connected with the corresponding bearing block 730, the other end of the cylinder 1091 is provided with a fan-shaped support plate 1093 arranged in parallel corresponding to the exhaust chamber, and the exhaust chamber 107 is fixed on the fan-shaped support plate 1093.

A packing seal assembly is arranged between the cylinder 1091 and the rotating shaft 73, a packing chamber 1094 of the packing seal assembly and the cylinder 1091 are integrated, and a mounting notch 1095 is further formed in the cylinder 1091 between the packing seal assembly 1094 and the bearing cover 1092.

In order to ensure the effective work of the exhaust device on the filtrate distribution valve, the parallelism of the end surface of the exhaust chamber and the end surface of the central shaft is important. According to the invention, the bearing gland 1092, the filling chamber 1094, the cylinder 1091 and the fan-shaped support plate 1093 are designed into an integral part, and are integrally processed after welding, so that the coaxiality of the circle centers and the parallelism of the end surfaces of the parts such as the bearing gland 1092, the filling chamber 1094, the cylinder 1091 and the fan-shaped support plate 1093 are ensured, and further the parallelism of the end surface of an exhaust device on the filtrate distribution valve and the end surface of a central shaft after the whole machine is assembled is ensured.

In this embodiment, the radially inner ends of the distribution plates 102 of the filtrate distribution valve 10 are clasped to the cylinder 1091 by the hoop mechanism 1021, so that the distribution plates 102 can rotate around the central shaft within a certain angle range.

The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.

In the description of the present invention, it should be understood that the terms "front", "back", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the description refers must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

Claims

1. The utility model provides a many discs concentrator regular polygon center pin which characterized in that: the filter comprises a central shaft, filtrate runners are uniformly distributed on the central shaft along the circumferential direction, and the filtrate runners are respectively communicated with the cavity channels of the fan-shaped plates on the corresponding discs;

2. The multi-disc concentrator regular polygon center shaft of claim 1, wherein: the bending plate is also correspondingly provided with a fixing hole for fixing the sector plate on the disc at the radial outer side surface of the conical core shaft part.

3. The multi-disc concentrator regular polygon center shaft of claim 2, wherein: the two fixed holes are in a group and correspond to the filtrate inlets one by one.

4. A multi-disc concentrator regular polygon center shaft as in claim 3, wherein: and corresponding to the fixing holes, locking nuts are fixedly arranged on the inner sides of the bending plates.

5. The multi-disc concentrator regular polygon center shaft of claim 1, wherein: and a rotating shaft is fixedly arranged at the central axis of the conical core shaft part in a penetrating manner.

6. The multi-disc concentrator regular polygon center shaft of claim 5, wherein: the conical core shaft part is formed by welding a conical cylinder and sealing plates arranged at two axial ends of the conical cylinder.

7. A central shaft of a regular polygon of a multi-disc concentrator as claimed in any one of claims 1 to 6, wherein: the bending plate is an L-shaped panel with an L-shaped section and consists of a vertical part and a horizontal part; the vertical part is fixedly connected with the outer peripheral surface of the conical core shaft part along the radial direction of the conical core shaft part, and the horizontal part is fixedly lapped on the adjacent L-shaped panel.