CN220578197U

CN220578197U - Double-motor driving type four-screw filter cake conveyor matched with oversized filter press unit

Info

Publication number: CN220578197U
Application number: CN202221709051.8U
Authority: CN
Inventors: 赵萌萌; 王庆森; 许勇; 王蕊; 梁颖
Original assignee: Jingjin Equipment Co Ltd
Current assignee: Jingjin Equipment Co Ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2024-03-12
Anticipated expiration: 2032-07-05

Abstract

The utility model relates to a double-motor driving type four-screw filter cake conveyor matched with an oversized filter press unit, which has the main points of the innovation scheme that: four parallel screw conveyors of the existing oversized filter press unit are combined and improved into a double-motor-driven type four-screw filter cake conveyor, and the filter cake conveyor comprises four-in-one conveying tanks, a shaft screw, a motor driving device, a linkage gear, a shaft coupler, a bearing box, a common machine base, a bearing box seat and a rotating shaft sealing device; the four-in-one conveying chute is mainly characterized in that the existing four U-shaped conveying chute is improved into a four-in-one conveying chute, two sets of motor driving devices are omitted, a double-motor driving four-screw body is realized through a linkage gear, all functions of the original four-screw conveyor are still kept, and the structure is simple and compact; the technical problems that the adjacent groove wall parts of the U-shaped conveying groove of the four-screw conveyor are redundant, the installation gaps of the adjacent groove walls are easy to leak materials, the maintenance or replacement frequency of the four motors is higher than that of the double motors, and the shutdown and the misoperation are easy to cause are solved; the product is updated, lowered in cost and enhanced in efficiency.

Description

Double-motor driving type four-screw filter cake conveyor matched with oversized filter press unit

Technical Field

The utility model belongs to the technical field of axial screw conveyors matched with super-huge filter press units, and also belongs to the omitted element utility model, and relates to a double-motor driving type four-screw filter cake conveyor.

Background

The filter press is a pressurized filtration device with a plurality of filter chambers intermittently operated; an oversized filter press is a filter press with an effective filtering area of more than 1000m and a filter plate size of more than 3000mm multiplied by 3000 mm; the ultra-large filter press unit mainly comprises an ultra-large filter press, a material mixing tank, a material conveying pump, an air compressor, a hydraulic station, a liquid filtering tank and a screw conveyor group; the screw conveyor group is integrally arranged below the large-sized filter press, and a discharge hole of the conveyor corresponds to filter cake outward conveying equipment; is suitable for automatic solid-liquid separation and filter cake output of various large amount of suspension materials (mixture of liquid and solid particles).

The total width of the screw conveyor group, namely four parallel shaft screw filter cake conveyors, corresponds to the width of the oversized filter press, and the screw conveyor group is arranged below the oversized filter press in parallel. The spiral conveyor is a device which uses a motor to drive a spiral to rotate and push materials to realize the purpose of closed conveying; the screw conveyor with the shaft is provided with a screw central shaft, and screw blades are not contacted with the bottom of a conveying tank; mainly comprises a screw driving device, a shaft screw device and a U-shaped material conveying groove; is suitable for horizontally conveying non-sticky non-winding materials.

The screw driving device comprises a motor driving device, a motor seat and a machine head coupler and is used for driving the shaft screw; the shaft-bearing spiral device comprises a shaft spiral body, a machine head bearing box, a machine tail thrust bearing box, a bearing box seat and a shaft end sealing device, and is used for continuously pushing materials to slide in the U-shaped material conveying groove to a discharge opening; the U-shaped conveying chute is a double-straight-wall U-shaped conveying chute and comprises a U-shaped conveying chute main body, a conveying chute end plate, a feed hopper and a discharge opening, wherein the U-shaped conveying chute main body is a lining plastic wear-resistant U-shaped conveying chute main body and is used for conveying a hot material channel; the spiral body with the shaft is positioned in the U-shaped material conveying groove, and the spiral blade is close to but not contacted with the groove bottom of the U-shaped material conveying groove.

The existing four parallel shaft screw conveyors have the following defects: (1) Four screw conveyors are needed to be arranged on one oversized filter press, waste materials cannot be shared by adjacent U-shaped material conveying groove walls, and equipment cost is high; (2) The installation gaps of the adjacent U-shaped material conveying grooves of the four spiral conveyors are easy to leak materials, and the installation gaps of the adjacent groove walls need sealing treatment; (3) The driving motor needs to be overhauled regularly, the driving failure rate of the four motors is higher than that of the two motors, the replacement frequency of the four motors is higher than that of the two motors, and the overhauling and the replacement of the motors lead to shutdown and misoperation; if two large-sized screw conveyors with shafts are specially manufactured, the screw blades of the screw conveyors are oversized and easy to deform, and the height of the equipment also exceeds the existing limited space; how to simplify the structure and combine the U-shaped material conveying groove, how to use a single motor to drive the double screw body and how to prolong the continuous production period is a technical problem which needs to be solved by users of the ultra-large filter press.

Disclosure of Invention

The utility model aims to overcome the defects of four parallel screw conveyors of the existing oversized filter press unit, solve the technical problems that the adjacent groove wall parts of a U-shaped conveying groove of the four screw conveyor are redundant, the installation clearance of the adjacent groove wall is easy to leak materials, the maintenance or replacement frequency of four motors is higher than that of a double motor, and the maintenance and replacement of the motors cause shutdown and misoperation, and provides a double-motor driving type four-screw filter cake conveyor matched with the oversized filter press unit.

The innovative technical scheme adopted for solving the problems in the prior art is as follows: the key point of the overall technical scheme is that the novel overall structure is compared with the prior art, and the novel filter press has the outstanding substantive characteristics that: four parallel screw conveyors of the existing oversized filter press unit are combined into a double-motor-driven type four-screw filter cake conveyor, and the filter cake conveyor comprises a four-in-one conveying chute, a conveying chute base, a shaft screw, a motor driving device, a linkage gear, a shaft coupling, a bearing box, a shared base, a bearing box base and a rotating shaft sealing device; the four-in-one conveying trough is mainly formed by combining four independent U-shaped conveying troughs, two sets of motor driving devices are omitted, a single motor driving double screw body, namely a double motor driving four screw body is realized through a linkage gear, all functions of the four original parallel screw conveyers are still kept, and the structure is simple and compact; therefore, the technical problems that the adjacent groove wall parts of the U-shaped conveying groove of the four screw conveyors are redundant, the installation gaps of the adjacent groove walls are easy to leak materials, the maintenance or replacement frequency of the four motors is higher than that of the two motors, and the maintenance and replacement of the motors cause shutdown and misoperation are solved; the specific design scheme of the utility model is as follows.

The four-in-one material conveying groove comprises a material conveying groove main body, a material outlet pipe, a separation angle plate, a U-shaped flange and a groove end cross beam; the inner wear-resistant U-shaped double-screw material conveying groove body is arranged, the length of the inner wear-resistant U-shaped double-screw material conveying groove body is longer than that of the filter press, the width of the inner wear-resistant U-shaped double-screw material conveying groove body is longer than that of the filter press, the right end of the inner wear-resistant U-screw material conveying groove body is provided with a material outlet, and the upper edges of two sides of the inner wear-resistant U-shaped double-screw material conveying groove body are provided with outer folds; the U-shaped flanges are arranged and correspond to the two end faces of the U-shaped material conveying groove main body; the double-groove end cross beam is welded on the notches at two ends of the conveying groove body respectively, the double-U-shaped flanges are welded at two ends of the conveying groove body respectively, the three separation angle plates are welded on the groove bottom of the conveying groove body at intervals, and the discharge port pipe is welded on the discharge port of the conveying groove body to form the four-in-one conveying groove.

The conveying chute base is matched with the four-in-one conveying chute in shape and comprises a base frame and base side columns (namely U-shaped chute stability side columns); the base frame is provided with diagonal stable reinforcing ribs; the base side posts are U-shaped groove stability side posts, and the base side post intervals on two sides are corresponding to the width of the U-shaped conveying groove main body.

The shaft screw body comprises a screw central shaft and screw blades; the screw central shaft comprises a driving screw shaft and a driven screw shaft, and the driving screw shaft is one section of coupler connecting shaft head more than the driven screw shaft; the outer diameter of the spiral blade is smaller than 1/4 of the width of the material conveying groove, and the spiral blade is welded on a spiral central shaft to form a shaft spiral body.

The motor driving device is a BWED42-493-Y0.75-4P-M1-1 type gear motor and comprises a motor and a speed reducer, and the speed reducer is provided with an output shaft.

The linkage gears are shaft screw body linkage gears, the outer diameter of the shaft screw body linkage gears corresponds to the center distance of the double screw central shafts, and each pair of linkage gears can be meshed after being installed.

The shared machine seat, namely the shared machine seat of the double motors and the four bearing boxes, comprises a machine seat connecting plate, a machine seat bottom plate, a machine seat reinforcing plate, a motor assembly plate, an adjusting jackscrew assembly and a machine seat bottom frame; the arranged base connecting plate, namely the right end plate of the material conveying groove, is provided with a four-screw central shaft hole, 16 bearing box mounting holes and a U-shaped flange connecting hole; the motor assembly plate is provided with double installation adjusting long holes; the arranged base bottom frame is a channel steel type base bottom frame; the base bottom plate is welded on the base bottom frame, the base connecting plate is vertically welded at the left end of the base bottom plate, the base reinforcing plate is welded at the included angle between the base bottom plate and the base connecting plate, the four motor assembly plates are matched and welded at the corresponding positions of the base bottom plate, the eight mounting adjustment long holes correspond to the two motor mounting holes, and the fixing nuts of the four adjustment jackscrew assemblies are respectively welded at the right side of the base bottom plate and correspond to the positions where the motor assembly plates can prop the motor driving device, so that a common base is formed.

The bearing box seat comprises a front shaft seat mounting plate, a rear shaft seat mounting plate and a shaft seat connecting plate; the front mounting plate of the shaft seat, namely the left end plate of the material conveying groove, is provided with four spiral central shaft holes and a plurality of U-shaped flange connecting holes; the rear mounting plate of the shaft seat is provided with four spiral central shaft holes; five shaft seat connecting plates are vertically welded on the shaft seat front mounting plate and the shaft seat rear mounting plate to form a bearing box seat.

The rotating shaft sealing device comprises a sealing element ring seat, a sealing element ring cover and a sealing element; the sealing element ring seat and the sealing element ring cover are respectively provided with a spiral central shaft hole; the sealing element is arranged in the sealing element ring seat, and the sealing element is pressed by the bolt sealing element ring cover to form the rotating shaft sealing device.

The connection relation of the main parts of the utility model is as follows: (1) non-helical part assembly: the four-in-one material conveying groove is arranged on the material conveying groove base, the bearing box seat and the shared base are respectively arranged at the left end and the right end of the four-in-one material conveying groove, so that the two ends of the four-in-one material conveying groove are closed, and eight bearing boxes are respectively arranged in the bearing box seat and the shared base; (2) helical part assembly: two ends of the four shaft screws respectively penetrate through screw central shaft holes at two ends of the four-in-one material conveying groove to be arranged in the double-bearing box, and the four shaft screws are integrally arranged in the four-in-one material conveying groove, but the screw blades of the four shaft screws are close to but do not contact the bottom of the four-in-one material conveying groove; simultaneously, a rotating shaft sealing device is used for sealing spiral central shaft holes at two ends of the four-in-one material conveying groove; (3) assembly of a driving device: the four linkage gears are respectively arranged at the right ends of the four spiral central shafts and meshed with each other, the double-motor driving device is arranged on a motor assembly plate of the shared machine base, the output shaft of the speed reducer is connected with the driving spiral shaft through a coupling, and the motor driving device is tightly propped up by the adjusting jackscrew assembly to form the double-drive four-spiral conveyor; and (4) final assembly of the double-drive four-screw conveyor: the double-drive four-screw conveyor is integrally arranged below the oversized filter press, a discharge port of the conveyor corresponds to filter cake outward conveying equipment, and a double-motor driving device is communicated with a PLC program control system of the oversized filter press; (5) dynamic relationship of double-drive four-screw conveyor: under the control of a PLC program control system, the double-drive four-screw conveyor and the plate pulling and cake discharging mechanism of the ultra-large filter press synchronously work; after the filtration is completed, the pulling plate cake discharging mechanism pulls the filter plate to realize gravity cake discharging, and the filter cake falls into a four-in-one material conveying groove of the double-drive four-screw conveyor; the double-motor driving device drives the four shaft screws to rotate by means of the linkage gear, the four screw blades continuously push the filter cake to slide towards the discharge hole, and the filter cake is output to filter cake outward conveying equipment from the discharge hole pipe; the filter cake unloading device has the functions of accommodating and temporarily storing filter cakes unloaded by a super-large filter press and outputting the filter cakes to outward transportation equipment.

The double-motor driving type four-screw filter cake conveyor matched with the oversized filter press unit has the remarkable advantages of four-in-one conveying chute, simple and compact structure, double-driving four-screw, complete element function, simple maintenance, temporary filter cake storage and reliable performance; the beneficial effects are as follows: the existing four U-shaped conveying tanks are combined and improved into a four-in-one conveying tank, two sets of motor driving devices are omitted, and a single motor is used for driving a double-screw body through a linkage gear, namely the double motor is used for driving the four-screw body, so that all functions of the original four parallel screw conveyors are still maintained; the integral structure of four parallel screw conveyors is simplified, the frequency of motor overhaul and quick-wear part replacement is reduced, and the requirement of users of the oversized filter press unit on relatively prolonging the continuous production period is met; the product is updated, lowered in cost and enhanced in efficiency.

Drawings

FIG. 1 is a top view of a dual motor driven four screw filter cake conveyor of the present utility model.

Fig. 2 is a front view of a dual motor driven four screw filter cake conveyor of the present utility model.

Fig. 3 is a side cross-sectional view of a dual motor driven four screw filter cake conveyor of the present utility model (including a dual axis screw counter-rotation illustration).

Fig. 4 is a side view of a four-in-one chute (excluding the chute base) of a dual motor-driven four-screw filter cake conveyor of the present utility model.

Fig. 5 is a front view of a four-in-one chute (excluding the chute base) of a dual motor-driven four-screw filter cake conveyor of the present utility model.

Fig. 6 is a top view of a four-in-one chute (excluding the chute base) of a dual motor-driven four-screw filter cake conveyor of the present utility model.

Fig. 7 is a top view of the feed chute base of the dual motor driven four screw filter cake conveyor of the present utility model.

Fig. 8 is a side view of the feed chute base of the dual motor driven four screw filter cake conveyor of the present utility model.

Fig. 9 is an assembled top view of the common housing and motor drive end (right end of the conveyor) of the dual motor drive quadrifilar filter cake conveyor of the present utility model.

Fig. 10 is a top view of a common housing of the dual motor driven four screw filter cake conveyor of the present utility model.

Fig. 11 is a side view of a common housing of the dual motor driven four screw cake conveyor of the present utility model.

Fig. 12 is an assembled top view of the bearing cartridge end (left end of the conveyor) of the dual motor driven quadrifilar filter cake conveyor of the present utility model.

Fig. 13 is an assembly view of the shaft seal of the dual motor driven four screw filter cake conveyor of the present utility model.

FIG. 14 is a schematic view of a bearing cartridge of the dual motor driven quadrifilar filter cake conveyor of the present utility model.

FIG. 15 is a schematic view of a front mounting plate of a shaft seat of a dual motor driven four screw filter cake conveyor of the present utility model.

FIG. 16 is a schematic view of a shaft seal assembly of a dual motor driven quadrifilar filter cake conveyor of the present utility model.

Reference numerals: 1-conveying trough main body, 2-spiral central shaft, 3-spiral blade, 4-conveying trough base, 5-motor driving device (comprising driving motor), 6-linkage gear, 7-coupling, 8-bearing box, 9-sharing base (namely motor and bearing box sharing base), 10-bearing box base, 11-rotating shaft sealing device, 12-discharge hole pipe, 13-separation angle plate, 14-discharge hole, 15-outer hem, 16-U-shaped flange, 17-trough end beam, 18-frame base, 19-base side column (namely U-shaped trough stability side column), 20-base connecting plate (namely conveying trough right end plate), 21-base bottom plate, 22-base reinforcing plate, 23-motor assembly plate, 24-adjusting jackscrew assembly, 25-base bottom frame, 26-shaft base front mounting plate (namely conveying trough left end plate), 27-shaft base rear mounting plate, 28-shaft base connecting plate, 29-sealing ring seat, 30-sealing ring cover, 31-sealing member.

The four-in-one material conveying groove comprises a 1-material conveying groove body, a 12-material outlet pipe, a 13-separation angle plate, a 16-U-shaped flange and a 17-groove end cross beam.

The shaft screw body comprises a 2-screw central shaft and 3-screw blades.

Detailed Description

The following description of the technical solutions of the embodiments of the present utility model will be made with reference to the accompanying drawings in an embodiment of a double motor-driven quadrirox filter cake conveyor associated with an oversized press unit of the present utility model, the described embodiments being only a preferred, but not all, of the embodiments of the present utility model. All other embodiments, such as four-in-one double-drive four-screw conveyor with the same way and similar structure as the omitted elements, which are not inventive by the person skilled in the art based on the embodiments of the present utility model, are all included in the protection scope of the present utility model.

Example 1

The key points of the innovative overall implementation scheme are that a double-motor-driven four-screw filter cake conveyor (called as a double-drive four-screw conveyor for short) matched with an oversized filter press unit is as follows: four parallel screw conveyors of the existing oversized filter press unit are combined and improved into a double-motor-driven four-screw filter cake conveyor, and the filter cake conveyor comprises four-in-one conveying chute, a conveying chute base 4, a shaft screw, a motor driving device 5, a linkage gear 6, a coupler 7, a bearing box 8, a shared base 9, a bearing box base 10 and a rotating shaft sealing device 11; the four-in-one conveying chute is mainly characterized in that the existing four U-shaped conveying chutes are combined and improved into four-in-one conveying chute, two sets of motor driving devices 5 are omitted, a single motor driving double screw body, namely a double motor driving double screw body is realized through a linkage gear 6, all functions of the four original parallel screw conveyors are still kept, and the structure is simple and compact; specific embodiments are described in detail below.

The four-in-one material conveying groove comprises a material conveying groove main body 1, a material outlet pipe 12, a separation angle plate 13, a U-shaped flange 16 and a groove end cross beam 17; the arranged material conveying groove main body 1 is an inner wear-resistant U-shaped four-screw material conveying groove main body 1, the length of the material conveying groove main body is longer than that of a filter press, the width of the material conveying groove main body is longer than that of a filter plate, the bottom of a right end groove of the material conveying groove main body is provided with a material outlet 14, and the upper edges of two sides of the material conveying groove main body are provided with outer folded edges 15; the U-shaped flanges 16 are arranged and are U-shaped flanges 16 corresponding to two end faces of the U-shaped conveying trough main body 1; the conveying chute main body 1 is arranged on the conveying chute base 4, double-chute-end cross beams 17 are respectively welded on the notches at two ends of the conveying chute main body 1, double U-shaped flanges 16 are respectively welded at two ends of the conveying chute main body 1, three separation angle plates 13 are alternately welded on the bottom of the conveying chute main body 1, and a discharge port pipe 12 is welded on a discharge port 14 of the conveying chute main body 1 to form a four-in-one conveying chute; the filter cake loading device is used for placing four shaft screws, loading and temporarily storing filter cakes unloaded by a very large filter press and used as a channel for conveying the filter cakes.

The conveying chute base 4 is a conveying chute base 4 matched with the four-in-one conveying chute in shape and comprises a base frame 18 and a base side column 19; the base frame 18 has diagonally stable ribs; the base side posts 19 are U-shaped groove stability side posts, and the intervals of the base side posts 19 on two sides are corresponding to the width of the U-shaped conveying groove main body 1.

The shaft screw body comprises a screw central shaft 2 and screw blades 3; the spiral central shaft 2 comprises a driving spiral shaft and a driven spiral shaft, and the driving spiral shaft is one section of coupler connecting shaft head more than the driven spiral shaft; the outer diameter of the spiral blade 3 is smaller than 1/4 of the width of the material conveying groove, and the spiral blade 3 is welded on the spiral central shaft 2 to form a shaft spiral body; two ends of the four shaft screws respectively penetrate through screw central shaft holes at two ends of the four-in-one material conveying groove and are arranged in the double-bearing box 8, and the four shaft screws are integrally arranged in the four-in-one material conveying groove, but the screw blades 3 of the four shaft screws are close to but do not contact with the groove bottom of the four-in-one material conveying groove; for continuously pushing the filter cake to slide towards the discharge hole 14, so that the filter cake is output from the discharge hole pipe 12 to filter cake outward-moving equipment.

The motor driving device 5 is a BWED42-493-Y0.75-4P-M1-1 type gear motor and comprises a motor and a speed reducer, wherein the speed reducer is provided with an output shaft; the double-motor driving device 5 is arranged on a motor assembly plate 23 of the common base 9, the output shaft of the speed reducer and the driving screw shaft are connected by the coupler 7, and the motor driving device 5 is tightly propped by the adjusting jackscrew assembly 24; for realizing the single motor driving of the double screw body, namely the double motor driving of the four screw body through the linkage gear 6.

The outer diameter of the linkage gear 6 corresponds to the center distance of the double-spiral central shaft 2, so that the double-linkage gear 6 can be meshed after being installed; two pairs of linkage gears 6 are respectively arranged at the right ends of the four spiral central shafts 2, and each pair of linkage gears 6 are meshed with each other and used for enabling the four spiral bodies to be in linkage.

The shared machine seat 9, namely the shared machine seat 9 of the double motor and the four bearing box 8, comprises a machine seat connecting plate 20, a machine seat bottom plate 21, a machine seat reinforcing plate 22, a motor assembly plate 23, an adjusting jackscrew assembly 24 and a machine seat bottom frame 25; the arranged base connecting plate 20, namely the right end plate of the material conveying groove, is provided with a four-screw central shaft hole, sixteen bearing box mounting holes and a U-shaped flange connecting hole; a motor assembly plate 23 having a double-installation adjustment slot; the arranged base bottom frame 25 is a channel steel type base bottom frame 25; the machine base plate 21 is welded on the machine base bottom frame 25, the machine base connecting plate 20 is vertically welded at the left end of the machine base plate 21, the machine base reinforcing plate 22 is welded at the included angle between the machine base plate 21 and the machine base connecting plate 20, the four motor assembly plates 23 are matched and welded at the corresponding positions of the machine base plate 21, the eight mounting adjustment long holes correspond to the motor mounting holes, the fixing nuts of the four adjustment jackscrew assemblies 24 are respectively welded at the right side of the machine base plate 21 and correspond to the positions where the motor assembly plates 23 can prop against the motor driving device 5, and a shared machine base 9 is formed; the shared machine base 9 is arranged at the right end of the four-in-one material conveying groove, so that the right end of the four-in-one material conveying groove is closed; the four bearing boxes 8 are arranged in a common base 9; the four-in-one feeding chute is used for installing two motor driving devices 5 and four bearing boxes 8 and closing the right end of the four-in-one feeding chute.

The bearing box seat 10 comprises a front shaft seat mounting plate 26, a rear shaft seat mounting plate 27 and a shaft seat connecting plate 28; the front shaft seat mounting plate 26, namely the left end plate of the material conveying groove, is provided with four spiral central shaft holes and a plurality of U-shaped flange connecting holes; the rear mounting plate 27 of the shaft seat is provided with four spiral central shaft holes; five shaft seat connecting plates 28 are vertically welded on the shaft seat front mounting plate 26 and the shaft seat rear mounting plate 27 to form the bearing box seat 10; the bearing box seat 10 is arranged at the left end of the four-in-one material conveying groove, so that the left end of the four-in-one material conveying groove is closed; four bearing cartridges 8 are mounted in a bearing cartridge holder 10; the four-in-one material conveying groove is used for installing the bearing box 8 and sealing the left end of the four-in-one material conveying groove.

The rotating shaft sealing device 11 comprises a sealing element ring seat 29, a sealing element ring cover 30 and a sealing element 31; the sealing element ring seat 29 and the sealing element ring cover 30 are respectively provided with a spiral central shaft hole; the sealing element 31 is arranged in the sealing element ring seat 29, and the sealing element 31 is pressed by the bolt sealing element ring cover 30 to form the rotating shaft sealing device 11; the rotating shaft sealing device 11 is sleeved into the shaft head of the spiral central shaft 2 and is embedded into the spiral central shaft hole of the bearing box seat 10; is used for sealing the gap between the spiral central shaft 2 and the spiral central shaft hole and preventing material leakage.

The double-motor driving type four-screw filter cake conveyor matched with the ultra-large filter press unit has the advantages of four-in-one material conveying groove, simple and compact structure, double-driving four-screw, complete element function, simple maintenance, temporary filter cake storage and reliable performance; the technical problems that the adjacent groove wall parts of the U-shaped conveying groove of the four-screw conveyor are redundant, the installation gaps of the adjacent groove walls are easy to leak materials, the maintenance or replacement frequency of the four motors is higher than that of the double motors, and the maintenance and replacement of the motors cause shutdown and misoperation are solved; the integral structure of four parallel screw conveyors is simplified, the frequency of motor overhaul and quick-wear part replacement is reduced, and the requirement of users of the oversized filter press unit on relatively prolonging the continuous production period is met; the product is updated, lowered in cost and enhanced in efficiency.

Example 2

The utility model provides an oversized filter press unit, which is used for a double-motor-driven four-screw filter cake conveyor (called as a double-drive four-screw conveyor for short) matched with the oversized filter press unit; the ultra-large filter press unit mainly comprises a large filter press, a material mixing tank, a material conveying pump, an air compressor, a hydraulic station, a liquid filtering tank and a double-drive four-screw conveyor; is suitable for automatic solid-liquid separation and filter cake output of various large amount of suspension materials (mixture of liquid and solid particles).

The ultra-large filter press is an automatic filter press with an effective filter area of more than 1000m and a filter plate size of more than 3000mm multiplied by 3000 mm; the device mainly comprises a double-beam frame, a filter plate pressing mechanism, a multi-filter chamber filtering mechanism, a turning plate liquid receiving mechanism, a pulling plate cake discharging mechanism, a filter cloth cleaning mechanism and a PLC program control system; the super-huge filter press and the prior art share the technical part and are manufactured according to the standard of the Chinese general machinery industry, namely, van and plate frame filter press T/CGMA0701 and the standard of the Van and plate frame filter press filter plate T/CGMA 0702-2021.

The double-drive four-screw conveyor, namely a two-motor-driven four-screw filter cake conveyor, comprises a four-in-one conveying chute, a shaft screw, a motor driving device 5, a linkage gear 6, a coupler 7, a bearing box 8, a common base 9, a bearing box base 10 and a rotating shaft sealing device 11; the double-drive four-screw conveyor is integrally arranged below the oversized filter press, a discharge hole 14 of the conveyor corresponds to filter cake outward conveying equipment, and a double-motor driving device is communicated with a PLC program control system of the oversized filter press; the double-drive four-screw conveyor is manufactured according to the current standard of screw conveyor JB/T7679 in the mechanical industry of China in the common technical part (such as an axial screw body) of the prior art.

The basic working process of the oversized filter pressing unit is as follows: the solid-liquid mixture of the material mixing tank is input into each filter chamber of the ultra-large filter press by the material conveying pump, so that pressure difference is formed at two sides of the filter cloth, low-pressure static filtration is carried out, particles in the material retained by the filter cloth form filter cakes in the filter chambers, the filter liquor flows out from the liquid outlet holes to the filter liquor tank through the filter cloth, the filter plates are pulled by the pulling plate cake discharging mechanism to realize gravity cake discharging, the filter cakes fall into the double-drive four-screw conveyor, and meanwhile, the filter cakes are output by the double-drive four-screw conveyor.

The detailed working process of the double-drive four-screw conveyor is as follows: under the control of a PLC program control system, the double-drive four-screw conveyor and the plate pulling and cake discharging mechanism of the ultra-large filter press synchronously work; after the filtration is completed, the pulling plate cake discharging mechanism pulls the filter plate to realize gravity cake discharging, and the filter cake falls into a four-in-one material conveying groove of the double-drive four-screw conveyor; the double-motor driving device 5 drives four screw bodies with shafts by means of two pairs of linkage gears 6, each pair of screw bodies rotates in opposite directions, the four screw blades 3 continuously push the filter cake to slide to the discharge hole 14, and the filter cake is output to filter cake outward-conveying equipment from the discharge hole pipe 12.

The double-motor driving type four-screw filter cake conveyor matched with the oversized filter press unit has the beneficial effects that: the existing four U-shaped conveying tanks are combined and improved into a four-in-one conveying tank, two sets of motor driving devices are omitted, and a single motor driving double screw body, namely a double motor driving double screw body, is realized through a linkage gear 6, so that all functions of the original four parallel screw conveyors are still kept; the integral structure of four parallel screw conveyors is simplified, the frequency of motor overhaul and quick-wear part replacement is reduced, and the requirement of users of the oversized filter press unit on relatively prolonging the continuous production period is met; the product is updated, lowered in cost and enhanced in efficiency.

Claims

1. A double-motor driving type four-screw filter cake conveyor matched with an oversized filter press unit comprises a four-in-one material conveying groove, a material conveying groove base, a shaft screw, a motor driving device, a linkage gear, a coupler, a bearing box, a shared machine base, a bearing box base and a rotating shaft sealing device; the method is characterized in that: the four-in-one material conveying groove comprises a material conveying groove main body, a material outlet pipe, a separation angle plate, a U-shaped flange and a groove end cross beam, wherein the material conveying groove main body is an inner wear-resistant U-shaped four-screw material conveying groove main body, the length of the material conveying groove main body is greater than that of a filter press, the width of the material conveying groove main body is greater than that of a filter plate by 3000mm, the bottom of a groove at the right end of the material conveying groove main body is provided with a material outlet, and the upper edges of two sides of the material conveying groove main body are provided with outer folded edges; the U-shaped flanges are arranged and correspond to the two end faces of the U-shaped material conveying groove main body; the double-groove end cross beams are respectively welded on the notches at the two ends of the conveying groove body, the double-U-shaped flanges are respectively welded at the two ends of the conveying groove body, the three separation angle plates are alternately welded on the bottom of the conveying groove body, and the discharge port pipe is welded on the discharge port of the conveying groove body to form a four-in-one conveying groove; the conveying chute base is a conveying chute reinforcing base matched with the four-in-one conveying chute in shape and comprises a base frame and base side columns, wherein the base frame is provided with diagonal stable reinforcing ribs; the base side posts are arranged, namely U-shaped groove stability side posts, and the base side posts on two sides are spaced corresponding to the width of the U-shaped conveying groove main body; the shaft screw body comprises a screw central shaft and screw blades; the spiral central shaft comprises a driving spiral shaft and a driven spiral shaft, the driving spiral shaft is one section of coupler connecting shaft heads more than the driven spiral shaft, and the length of the spiral central shaft is longer than that of the ultra-large filter press; the outer diameter of the spiral blade is smaller than 1/4 of the width of the material conveying groove, and the spiral blade is welded on a spiral central shaft to form a shaft spiral body; the motor driving device is a BWED42-493-Y0.75-4P-M1-1 type gear motor and comprises a motor and a speed reducer, wherein the speed reducer is provided with an output shaft; the linkage gear is a shaft spiral body linkage gear, the outer diameter of the linkage gear corresponds to the center distance of the double spiral central shaft, and each pair of linkage gears can be meshed after being installed; the shared machine seat, namely the shared machine seat of the double motors and the four bearing boxes, comprises a machine seat connecting plate, a machine seat bottom plate, a machine seat reinforcing plate, a motor assembly plate, an adjusting jackscrew assembly and a machine seat bottom frame; the arranged base connecting plate, namely the right end plate of the material conveying groove, is provided with a four-screw central shaft hole, 16 bearing box mounting holes and a U-shaped flange connecting hole; the motor assembly plate is provided with double installation adjusting long holes; the arranged base bottom frame is a channel steel type base bottom frame; the machine base plate is welded on the machine base bottom frame, the machine base connecting plate is vertically welded at the left end of the machine base plate, the machine base reinforcing plate is welded at the included angle between the machine base plate and the machine base connecting plate, the four motor assembly plates are welded at the corresponding positions of the machine base plate in a matched mode, the eight mounting adjustment long holes correspond to the two motor mounting holes, the fixing nuts of the four adjustment jackscrew assemblies are respectively welded at the right side of the machine base plate and correspond to the positions where the motor assembly plates can prop the motor driving device, and a common machine base is formed; the bearing box seat comprises a front shaft seat mounting plate, a rear shaft seat mounting plate and a shaft seat connecting plate; the front mounting plate of the shaft seat, namely the left end plate of the material conveying groove, is provided with four spiral central shaft holes and a plurality of U-shaped flange connecting holes; the rear mounting plate of the shaft seat is provided with four spiral central shaft holes; five shaft seat connecting plates are vertically welded on a shaft seat front mounting plate and a shaft seat rear mounting plate to form a bearing box seat; the rotating shaft sealing device comprises a sealing element ring seat, a sealing element ring cover and a sealing element, wherein the sealing element ring seat and the sealing element ring cover are respectively provided with a spiral central shaft hole, the sealing element is arranged in the sealing element ring seat, and the sealing element is tightly pressed by the sealing element ring cover through bolts to form the rotating shaft sealing device; the interconnection relationship is: (1) The four-in-one material conveying groove is arranged on the material conveying groove base, the bearing box seat and the shared base are respectively arranged at the left end and the right end of the four-in-one material conveying groove, so that the two ends of the four-in-one material conveying groove are closed, and eight bearing boxes are respectively arranged in the bearing box seat and the shared base; (2) helical part assembly: two ends of the four shaft screws respectively penetrate through screw central shaft holes at two ends of the four-in-one material conveying groove to be arranged in the double-bearing box, and the four shaft screws are integrally arranged in the four-in-one material conveying groove, but the screw blades of the four shaft screws are close to but do not contact the bottom of the four-in-one material conveying groove; simultaneously, a rotating shaft sealing device is used for sealing spiral central shaft holes at two ends of the four-in-one material conveying groove; (3) assembly of a driving device: the four linkage gears are respectively arranged at the right ends of the four spiral central shafts and meshed with each other, the double-motor driving device is arranged on a motor assembly plate of the shared machine base, the output shaft of the speed reducer is connected with the driving spiral shaft through a coupling, and the motor driving device is tightly propped up by the adjusting jackscrew assembly to form the double-drive four-spiral conveyor; the double-motor-driven four-screw filter cake conveyor has the functions of receiving and temporarily storing filter cakes discharged by an oversized filter press and outputting the filter cakes to outward conveying equipment, and the conveying capacity of the double-motor-driven four-screw filter cake conveyor is twice that of the single-motor-driven double-screw filter cake conveyor.