CN115258544A - Sludge scraper with self-protection and cleaning functions - Google Patents
Sludge scraper with self-protection and cleaning functions Download PDFInfo
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- CN115258544A CN115258544A CN202210934109.7A CN202210934109A CN115258544A CN 115258544 A CN115258544 A CN 115258544A CN 202210934109 A CN202210934109 A CN 202210934109A CN 115258544 A CN115258544 A CN 115258544A
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- scraper
- chain
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- sludge
- shell
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- 238000004140 cleaning Methods 0.000 title claims abstract description 53
- 239000010802 sludge Substances 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 79
- 238000005452 bending Methods 0.000 claims abstract description 51
- 238000005192 partition Methods 0.000 claims abstract description 32
- 239000004698 Polyethylene Substances 0.000 claims description 15
- -1 polyethylene Polymers 0.000 claims description 15
- 229920000573 polyethylene Polymers 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 238000005299 abrasion Methods 0.000 abstract description 9
- 230000033001 locomotion Effects 0.000 description 12
- 230000007246 mechanism Effects 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011295 pitch Substances 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/18—Details
- B65G19/22—Impellers, e.g. push-plates, scrapers; Guiding means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/18—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/34—Devices for discharging articles or materials from conveyor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pusher Or Impeller Conveyors (AREA)
Abstract
A sludge scraper with self-protection and cleaning functions comprises a shell and a scraper chain; the shell comprises a tail part, a feeding section, a lower bending section, a vertical section, an upper bending section and a head part; the lower bending section, the vertical section and the upper bending section are internally provided with a partition plate, and the middle section of the shell is vertically divided into an idle load cavity and a material running cavity by the partition plate; the scraper chain comprises a single chain, the single chain is installed on the scraper and keeps a certain interval with the upper end face and the lower end face of the scraper, and the scraper keeps a certain gap with the partition plate and the shell. The sludge scraper machine with the self-protection and cleaning functions can vertically convey sludge, prevent the sludge from agglomerating in the conveying process, reduce the abrasion of chains and automatically clean the sludge.
Description
Technical Field
The invention relates to a scraper, in particular to a sludge scraper with self-protection and cleaning functions.
Background
The traditional domestic vertical scraper machine, such as a MZ type buried scraper sludge conveyor and a method in the patent with the application number of 201610196233.4, has high manufacturing cost, high failure rate and difficult maintenance due to the complex structure and high precision. The disadvantages are as follows:
1) The existing vertical scraper conveyor is generally of a double-chain structure, namely, chains are externally arranged on two sides of a scraper. In the ascending process of conveying sludge, the tension force applied to chains at two sides is inconsistent due to uneven distribution of materials, the total length of the chains at two sides is different due to different abrasion degrees of the chains, and the scraping plates slightly incline or swing left and right in the moving process due to the reasons. The time is a specified duration, and the chain takes place to take off the tooth, jump the tooth phenomenon when the sprocket that bypasses the head turns to, makes the scraper blade of originally arranging in proper order take place serious dislocation, blocks in having carried the conveyer cavity, and the scraper blade drives the chain and blocks and can't realize smooth switching-over, and the sprocket feeds back the pressure of motor too big, takes place the overload condition and causes the conveyer card to die the machine halt. This kind of double-chain structure causes the asynchronous condition of chain to take place, also can aggravate the wearing and tearing of chain, and the scraper blade deformation distortion can not be used, and the friction aggravation of scraper chain and casing, casing fracture cause the material to reveal.
2) The double-chain structure requires synchronous movement of the chains, the precision of the chains is high, the chains are roller chains, the structure and the manufacturing process are complex, and the chain is composed of a pin shaft, a sleeve, rollers, an inner chain plate and an outer chain plate. In the use process, the pin shaft respectively and the sleeve, the inner chain plate and the outer chain plate have relative motion, the accumulated error of the pitches of the two chains is larger and larger when the pin shaft is subjected to abrasion of different degrees and corrosion of materials, and the service life of the pin shaft is short and easy to break.
3) The chain is external, the cavity is made into a convex shape to match with the motion of the chain, and the chain track is arranged in the cavity, so that the structure is complex and the occupied space is large. The chain is reversed at the 90-degree lower bending section and the upper bending section, and is realized by meshing with the chain wheel, the upper cavity and the lower cavity of the upper and lower bending sections are both provided with the chain wheel set, so that the process is complicated, and the structure is complex. The engagement of the chain with the plurality of sprockets also increases the wear of the chain. The material is when beginning to turn to from the horizontal segment along with the scraper blade, and most material receives the influence of gravity to drop from the gap between cavity and the scraper blade, and it is of a specified duration, and a large amount of materials are piled up in sprocket chain meshing department, because the space of turning department has been influenced to the diameter of sprocket itself for a short time, and the material receives the extrusion not at loose, and the scraper blade is scraped and is not walked and cause the putty, and scraper conveyor can not normal operating.
4) The scraper conveyor with the interlayer structure can only hold materials with the same volume at a constant speed, and can only guarantee that the scraper chain normally transports the materials. But during actual operation, the plate and frame filter press releases all sludge instantly after dehydrating the sludge, and in the initial stage, when a large amount of sludge is fed, the sludge scraper conveyor has the condition of overload or even full load, so that the scraper chain is not conveyed timely, and a large amount of materials are accumulated and left to be extruded in the operation cavity. Because mud moisture content is high, has certain corrosivity and viscidity to the rigidity material, in case the feeding volume is too big to receive easy agglomeration no longer loose after the extrusion to occupy the sealed cavity inner space around the conveyer in a large number, the material that accumulates more can be whole the plugging up certain cross section of conveyer and form the extrusion, forms pressure to the conveyer cavity and destroys the cavity structures. And the above patent does not solve the problem.
The patent 'a scraper blade lifting machine' of application number "202122386437.1" has adopted double-chain structure to the sludge conveying equally, and the chain is external and contacts with casing or baffle, and the wearing and tearing are bigger when the atress is great in the corner, have aggravated the wearing and tearing of chain.
Disclosure of Invention
The invention aims to solve the technical problem of providing a sludge scraper with self-protection and cleaning functions, which adopts a single-chain structure to avoid various problems caused by the double-chain structure; the connecting positions of the chain and the scraper and the specific parameter settings are changed, so that the abrasion and deformation caused by the fact that the traditional single chain is buried in materials and the materials are brought to head wheels and tail wheels are avoided; a guide mechanism is omitted at the upper bending part and the lower bending part, and meanwhile, the chain is not contacted with the shell in the whole operation process, so that the abrasion is greatly reduced; the protection device is arranged at the feed inlet, and materials always enter the sludge scraper conveyor at a constant speed when the plate-and-frame filter press is overloaded or fully loaded, so that the normal operation of equipment is ensured.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a sludge scraper with self-protection and cleaning functions comprises a shell and a scraper chain;
the shell comprises a tail part, a feeding section, a lower bending section, a vertical section, an upper bending section and a head part; the lower bending section, the vertical section and the upper bending section are internally provided with a partition plate, and the middle section of the shell is vertically divided into an idle load cavity and a material running cavity by the partition plate;
the scraper chain comprises a single chain, the single chain is installed on the scraper and keeps a certain interval with the upper end face and the lower end face of the scraper, and the scraper keeps a certain gap with the partition plate and the shell.
The scraper blade includes the scraper blade main part, and scraper blade main part upper portion is controlled and can be dismantled with scraper blade connecting portion and be connected, and the welding of scraper blade connecting portion inner is in the single chain outside, and the single chain is arranged in the recess of scraper blade main part and the top edge is less than scraper blade main part top.
The scraper and the clapboard are both high-molecular polyethylene plates; the left side plate, the right side plate and the bottom plate of the corresponding shell are all lined with high molecular polyethylene plates.
The center of a circle of the partition plate at the lower bending section is the same as that of the arc part at the outer side of the lower bending section, and the height of the scraper plate is matched with the distance from the partition plate to the arc part at the outer side of the lower bending section; the baffle of last bending section department is the same with the centre of a circle of the inboard circular arc portion of last bending section, and the height of scraper blade matches with the distance of baffle to the inboard circular arc portion of last bending section.
The feeding protection device is installed to the feed inlet department of feed section, and feeding protection device includes the feeding casing, and feeding casing upper end is equipped with the feed inlet, the lower extreme is equipped with the discharge gate, is equipped with the flashboard in the feeding casing, and the flashboard upper end is installed in the pivot, and the flashboard lower extreme passes through cam conveying component drive swing back and forth.
And a spring assembly is fixed on the flashboard between the cam transmission assembly and the rotating shaft, the other end of the spring assembly is installed on a pressure sensor, and the pressure sensor is fixed on the feeding shell.
The automatic material cleaning device is arranged in the head and comprises a material cleaning shaft, a cleaning chain wheel and a cleaning blade are arranged on the material cleaning shaft, the cleaning chain wheel is meshed with the single chain, and the cleaning blade scrapes the back of the scraper blade when the material cleaning shaft rotates.
The outer end of the cleaning blade is bent towards the rotating direction, and a high-molecular polyethylene plate is arranged on the inner side of the bent cleaning blade through a bolt.
The clearance between the scraper and the inner wall of the material running cavity is between 5mm and 10 mm.
The invention relates to a sludge scraper conveyor with self-protection and cleaning functions, which has the following technical effects:
1) Compared with a double-chain structure, the chain scraper has the advantages that the single-chain structure is adopted, and one chain is arranged at the groove in the middle of the scraper, so that the manufacturing process is simple and the cost is low; the synchronous requirement is not met, the phenomena of tooth stripping and tooth jumping of the chain are avoided, the deformation of the scraper is avoided, and the material leakage caused by the breakage of the shell is avoided.
2) The scraper plate of the traditional single-chain scraper plate is provided with the high-molecular polyethylene plate as the scraper plate main body, and the single chain is arranged in the groove of the scraper plate main body, so that the shell does not need to be arranged into a convex structure, and the processing of the shell is simplified; meanwhile, the chain does not need a track and can not contact with the shell and the partition plate, so that the abrasion is greatly reduced; in addition, the chain can also reduce the contact with mud under the condition that the casing cross section is the rectangle, reduces wearing and tearing, corruption and follow-up a series of trouble scheduling problem, extension equipment life.
3) Through setting up the baffle + arrange the scraper blade chain in the recess of scraper blade main part in, in the place of turning, to the great condition of atress, saved guiding mechanism, utilize the scraper blade upper and lower level respectively under the circular motion is done in the baffle circular arc outside of bending section and the inboard meshing of bottom plate circular arc of bending section, the chain not with casing contact all around, wearing and tearing greatly reduced.
4) The feeding protection device is arranged at the feeding position, so that the looseness of the materials can be guaranteed, the materials enter the scraper conveyor at a constant speed, and the materials are prevented from exceeding the rated capacity of the scraper conveyor. The sludge has viscosity, and the vibration generated by the cam can make the sludge fall off smoothly.
5) The automatic material cleaning device is arranged at the head, so that sludge on the scraper can be scraped at the position, and the sludge directly falls down from the discharge hole, thereby improving the conveying efficiency of the device and reducing material return.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
FIG. 3 is a front view of the scraper chain of the present invention.
Fig. 4 is a front view of the lower curved segment of the present invention.
FIG. 5 is a schematic view of the connection of the feed protection device of the present invention.
FIG. 6 is an external schematic view of the feed protection device of the present invention.
Fig. 7 is a cross-sectional view of a feed protection device of the present invention.
Fig. 8 is a schematic view of the automatic material cleaning device in the first working state.
Fig. 9 is a schematic view of a second working state of the automatic material cleaning device of the present invention.
Fig. 10 is a schematic installation diagram of the automatic material cleaning device of the present invention.
Fig. 11 is a top view of the automatic material cleaning device of the present invention.
Fig. 12 is an assembly schematic of the present invention.
In the figure: the automatic material cleaning device comprises a shell 1, a scraper chain 2, a high-molecular polyethylene plate 3, a feeding protection device 4, an automatic material cleaning device 5, a plate-and-frame filter press 6, a storage bin 7, a tail 1.1, a feeding section 1.2, a lower bending section 1.3, a vertical section 1.4, an upper bending section 1.5, a head 1.6, a partition plate 1.7, an idle cavity 1.8, a material running cavity 1.9, a head wheel 1.10, a single chain 2.1, a scraper 2.2, a scraper main body 2.2.1, a scraper connecting part 2.2, a groove 2.2.3, a feeding shell 4.1, a feeding port 4.2, a discharging port 4.3, a flashboard 4.4, a rotating shaft 4.5, a cam transmission component 4.6, a spring component 4.7, a pressure sensor 4.8, an access door 4.9, a chain transmission mechanism 4.10 and a speed reducer 4.11.
Detailed Description
As shown in figure 1, the sludge scraper with self-protection and cleaning functions comprises a shell 1 and a scraper chain 2. The shell 1 comprises a tail part 1.1, a feeding section 1.2, a lower bending section 1.3, a vertical section 1.4, an upper bending section 1.5 and a head part 1.6, and the shell 1 is approximately Z-shaped as a whole, so that the materials can be directly lifted and conveyed upwards in a closed environment. A tail wheel and a tail shaft are arranged in the tail part 1.1 of the shell 1, a head wheel and a head shaft are arranged in the head part 1.6 of the shell 1, and a speed reducing motor and a chain transmission mechanism for driving the head shaft to rotate are arranged outside the head part 1.6. The scraper chain 2 is arranged on the tail wheel and the head wheel and can be tensioned through corresponding screw rod tensioning mechanisms. When the scraper chain device works, the speed reducing motor drives the head shaft to rotate so as to drive the scraper chain 2 to move.
As shown in fig. 1, a partition plate 1.7 is arranged in the lower bending section 1.3, the vertical section 1.4 and the upper bending section 1.5, the middle section of the shell 1 is divided into an empty cavity 1.8 and a material running cavity 1.9 by the partition plate 1.7, and the empty cavity 1.8 and the material running cavity 1.9 are rectangular cavities, so that the shell is simpler and more convenient to process and smaller in structure compared with a convex shell. After the partition plates 1.7 are used for partitioning, the material running cavity 1.9 can be divided into a plurality of conveying cavities by the scraper 2.2, and when the scraper 2.2 runs upwards, the conveying cavities move upwards and convey materials, so that effective vertical conveying is realized.
As shown in fig. 2, the scraper chain 2 includes a single chain 2.1, and scrapers 2.2 are mounted on the single chain 2.1 at intervals.
In the process of conveying the sludge, the sludge is unevenly distributed on the section of the scraper, so that the acting force on the two sides of the scraper is different. If a double-chain structure is adopted, the two groups of chains are worn differently, and the pin shaft in the chain structure is worn in the sleeve, so that the pitch increase of each chain section has different errors. Since the chain on the side which is subjected to a large force is worn significantly more than the chain on the other side, the cumulative error value of the pitch increase caused by the wear of the chain on this side is larger than that on the other side, and the total length of the chain on this side is longer than that on the other side. This causes a situation where the squeegee tilts or swings left and right during movement. The time is a specified duration, and the chain takes place to take off the tooth, jump the tooth phenomenon when the sprocket that bypasses the head turns to, makes the scraper blade of originally arranging in proper order take place serious dislocation, blocks in having carried the conveyer cavity, and the scraper blade drives the chain and blocks and can't realize smooth switching-over, and the sprocket feeds back the pressure of motor too big, takes place the overload condition and causes the conveyer card to die the machine halt. This kind of double-chain structure causes the asynchronous condition of chain to take place, also can aggravate the wearing and tearing of chain, and the scraper blade warp the distortion can not be used, and the friction aggravation of scraper chain and casing, the casing fracture causes the material to reveal. Through adopting the single chain, do not have the synchronous problem of double-stranded, the chain causes the total length of chain to become the long term because wearing and tearing, only needs to adjust the overspeed device tensioner of afterbody when regularly overhauing, can not take place the chain scraper blade because jump the serious problem of tooth card death in scraping trigger shell.
As shown in fig. 2-3, the single chain 2.1 is mounted on the scraper 2.2 and keeps a certain distance with the upper and lower end faces of the scraper 2.2, and the scraper 2.2 keeps a certain distance with the partition board 1.7 and the shell 1. Specifically, the scraper 2.2 comprises a scraper main body 2.2.1, a groove 2.2.3 is formed in the middle of the upper end of the scraper main body 2.2.1, the single chain 2.1 is positioned in the groove 2.2.3 of the scraper main body 2.2.1, and the upper edge of the single chain is lower than the top end of the scraper main body 2.2.1. The left and right sides of the single chain 2.1 are welded with scraper connecting parts 2.2.2, and the scraper connecting parts 2.2.2 are detachably connected with the scraper main body 2.2.1 through bolts.
The scraper blade in traditional single chain scraper blade is equivalent to scraper blade connecting portion 2.2.2 in this equipment, because scraper blade 2.2 is shorter, leads to the single chain not to be in the material, like this the single chain takes place a series of problems such as card death, corruption, wearing and tearing easily in the mud transportation process. In the equipment, a scraper main body 2.2.1 is arranged on a traditional scraper (a scraper connecting part 2.2.2), so that the scraper is a high scraper, a chain is arranged in a groove in the middle of the scraper, and the upper edge of the chain does not exceed the scraper. Therefore, in the whole operation process of the chain, on one hand, the chain is high, so that the contact with sludge is reduced, and the phenomena of abrasion, deformation, blocking and the like are reduced; on the other hand, except that the chain is engaged and reversed by the chain wheel at the head part and the chain wheel at the tail part, the whole chain is not contacted with any panel of the shell, the contact mode of the original chain and the guide rail is changed, the abrasion of the chain is greatly reduced, the chain is protected, and the service life of the chain is prolonged.
As shown in fig. 4, the center of the partition board 1.7 at the lower bending section 1.3 is the same as the center of the outer circular arc portion of the lower bending section 1.3, so that the partition board 1.7 and the outer circular arc portion of the lower bending section 1.3 form a uniform lower bend. And the height of the scraper 2.2 is matched with the distance from the partition board 1.7 to the arc part outside the lower bending section 1.3 (keeping a small gap and facilitating movement), so that when passing through the lower bending section 1.3, the chain does circular motion at the partition board 1.7 of the lower bending section 1.3 by depending on the upper edge of the scraper, and the chain is not in contact with the periphery of the shell 1. In a similar way, the center of a circle of the partition board 1.7 at the upper bending section 1.5 is the same as that of the inner side arc part of the upper bending section 1.5, so that the partition board 1.7 and the inner side arc part of the upper bending section 1.5 form a uniform lower bend. And the height of the scraper 2.2 is matched with the distance from the partition board 1.7 to the arc part at the inner side of the upper bending section 1.5 (a small gap is kept, and the movement is convenient). When the chain passes through the upper bending section 1.5, the chain does circular motion by the inner side arc part of the upper bending section 1.5 under the scraper, and the chain is not contacted with the periphery of the shell.
The chain receives the effort very big at last bending section and lower bending section except the effort that receives at the head and the tail pulley, and tradition installation leading wheel leads, turns into rolling friction with sliding friction, reduces chain friction and wear. The guide wheel is directly omitted, the single chain 2.1 is arranged in the groove of the scraper 2.2, and the height of the scraper is increased by adding a scraper on the traditional scraper, so that even if the stress is large at the turning part, the chain is not in contact with the shell 1 or the partition plate 1.7, and the abrasion of the chain is greatly reduced.
As shown in fig. 2, the scraping plate 2.2 and the partition plate 1.7 are both high molecular polyethylene plates; the left side plate, the right side plate and the bottom plate of the corresponding shell 1 are both lined with high molecular polyethylene plates 3. The scraper is made of high-molecular polyethylene. When the scraper chain moves in the shell, the friction between the periphery of the scraper and the shell is almost ignored due to the self-lubricating effect of the high-molecular polyethylene. The scraper and the shell are respectively well protected.
As shown in fig. 5, a feeding protection device 4 is installed at the feeding port of the feeding section 1.2, and since the embedded scraper conveyor is provided with a partition plate 1.7, when the scraper runs in the material running cavity 1.9, the corresponding cavity can only contain materials with the same volume at a constant speed, and the normal material conveying of the scraper chain can only be ensured. But in actual operation, the plate-and-frame filter press releases all the sludge instantly after dehydrating the sludge, and in the initial stage, when a large amount of sludge is fed, the sludge scraper conveyor is overloaded or even fully loaded, so that the scraper chain is not conveyed timely. Therefore, a large amount of accumulated materials are left to be extruded in the operation cavity, the cavity is damaged after bearing pressure, and even sludge is not loosely extruded to form a cluster and is blocked in the shell, so that the scraper chain is blocked. Therefore, the feeding protection device 4 is arranged at the feeding end, so that the looseness of the materials is guaranteed, the materials enter the scraper conveyor at a constant speed, and the materials are prevented from exceeding the rated capacity of the scraper conveyor.
Specifically, as shown in fig. 6-7, the feeding protection device 4 comprises a feeding shell 4.1, a feeding port 4.2 is arranged at the upper end of the feeding shell 4.1, the feeding port 4.2 is connected with a discharging port of the plate-and-frame filter press, a discharging port 4.3 is arranged at the lower end of the feeding shell 4.1, and the discharging port 4.3 is connected with the sludge scraper. A flashboard 4.4 is arranged in the feeding shell 4.1, the upper end of the flashboard 4.4 is fixed on a rotating shaft 4.5, and the rotating shaft 4.5 is rotatably arranged on the feeding shell 4.1 through a bearing assembly. The lower part of the shutter 4.4 remote from the spindle 4.5 rests on the end face of a spring assembly 4.7 (two sets of springs). The other end of the spring assembly 4.7 is fixed on a pressure sensor 4.8, and the pressure sensor 4.8 is fixed on the feeding shell 4.1. In addition, a cam transmission assembly 4.6 is arranged at the corresponding position of the bottom end of the shutter plate 4.4, and the cam transmission assembly 4.6 comprises a cam which is arranged on a cam shaft, and the cam shaft is rotatably arranged on the feeding shell 4.1 through a bearing assembly. The camshaft extends out of the feeding shell 4.1 and is driven to rotate by a chain transmission mechanism 4.10 and a speed reducer 4.11.
The shutter 4.4 divides the blanking channel in the feeding shell 4.1 into a trapezoidal discharging space with a wide top and a narrow bottom and another installation space for installing the cam transmission assembly 4.6. When the materials are conveyed in a normal amount, the materials falling on the gate plate 4.4 are very little, and the deformation of the spring is not large. When the material transships or full load transport, the material that passes through trapezoidal space in the twinkling of an eye increases, and the material that increases in a large number can be along trapezoidal hypotenuse arch upwards, causes the extrusion balling, blocks up the difficult conveyer that falls of passageway below easily. The spring below the gate plate 4.4 forms different large deformation in the initial stage of passing a large amount of materials, the acting force is transmitted to the pressure sensor 4.8, the pressure sensor 4.8 is converted into an electric signal, the speed reducer 4.11 is started, and the speed reducer 4.11 drives the camshaft to do circular motion. When the cam shaft rotates once, the gate plate is driven by the cam to swing up and down. Each time the flashboard 4.4 swings, the spring is passively separated, then the end face of the spring is hit by the self weight and the pressure of the material, the spring expands and contracts instantly to cause reverse continuous exciting force to the flashboard 4.4, the material on the flashboard 4.4 is forced to do upward throwing motion, and then the agglomerated material is not extruded any more and gradually loosened from bottom to top after being stressed along with the opening of the downward space of the flashboard 4.4. The obtained loose materials move downwards to the discharge hole at a certain speed along with the periodical swinging motion of the flashboard 4.4, so that the feeding protection device always controls the amount of the materials entering the scraper conveyor when the materials are overloaded or fully loaded.
As shown in fig. 8-9, an automatic material cleaning device 5 is arranged in the head part 1.6, and sludge has viscosity and can be adhered to the scraper and the chain. Make scraper chain 2's whole weight increase, promote scraper chain 2 and need more pulling force, increase the bigger load of motor. The corrosiveness of the sludge can also cause certain damage to the chain. The automatic material cleaning device 5 is used for avoiding bringing more materials back to the no-load cavity, the materials in the no-load cavity return to the material running cavity 1.9 under the action of the scraper chain, and the conveying efficiency of the scraper conveyor is reduced.
Specifically, as shown in fig. 10-11, the automatic material cleaning device 5 comprises a material cleaning shaft 5.1, the material cleaning shaft 5.1 is rotatably mounted on the housing 1 through a bearing assembly, a cleaning chain wheel 5.2 is mounted in the middle of the material cleaning shaft 5.1, and the cleaning chain wheel 5.2 is meshed with the single chain 2.1. Cleaning blades 5.3 are arranged on the left and right sides of the cleaning shaft 5.1, and three groups of cleaning blades 5.3 are circumferentially distributed along the axial direction.
As shown in fig. 8-9, the single chain 2.1 can drive the cleaning chain wheel 5.2 to rotate when running, and then drive the cleaning blade 5.3 to rotate, and the rotating speed and direction of the cleaning blade 5.3 are consistent with those of the head pulley. During rotation, each set of cleaning blades 5.3 is guided right into the rear side of the scraper blade 2.2 and then moves away with the scraper blade 2.2. The back of the scraper 2.2 is assisted by a steel plate to increase the strength of the polyethylene scraper, and sludge is more adhered to the steel plate. The middle of each group of cleaning blades 5.3 is disconnected, a little clearance is left between the cleaning blades and the two sides of the single chain 2.1, and when the scraper is in operation, the sludge on the two sides of the scraper 2.2 can be scraped away. The scraped sludge falls down and is directly discharged through a discharge hole. The material of clearance sprocket 5.2 is polymer polyethylene, and clearance blade 5.3 is lined with polymer polyethylene, plays the guard action to chain, scraper blade, casing.
Claims (9)
1. The utility model provides a scraper conveyor is scraped to mud with self-protection and clearance function which characterized in that: comprises a shell (1) and a scraper chain (2);
the shell (1) comprises a tail part (1.1), a feeding section (1.2), a lower bending section (1.3), a vertical section (1.4), an upper bending section (1.5) and a head part (1.6); the lower bending section (1.3), the vertical section (1.4) and the upper bending section (1.5) are internally provided with a partition plate (1.7), and the middle section of the shell (1) is vertically divided into an idle load cavity (1.8) and a material operation cavity (1.9) by the partition plate (1.7);
the scraper chain (2) comprises a single chain (2.1), the single chain (2.1) is installed on the scraper (2.2) and keeps a certain interval with the upper end face and the lower end face of the scraper (2.2), and the scraper (2.2) keeps a certain interval with the partition plate (1.7) and the shell (1).
2. The sludge scraper with self-protection and cleaning functions as claimed in claim 1, characterized in that: scraper blade (2.2) including scraper blade main part (2.2.1), can dismantle with scraper blade connecting portion (2.2.2) and be connected about scraper blade main part (2.2.1) upper portion, and the welding of scraper blade connecting portion (2.2.2) inner is in single chain (2.1) outside, and single chain (2.1) are arranged in recess (2.2.3) of scraper blade main part (2.2.1) and the top edge is less than scraper blade main part (2.2.1) top.
3. The sludge scraper with self-protection and cleaning functions as claimed in claim 2, characterized in that: the scraper (2.2) and the partition plate (1.7) are both high-molecular polyethylene plates; the left side plate, the right side plate and the bottom plate of the corresponding shell (1) are both lined with high molecular polyethylene plates (3).
4. The sludge scraper with self-protection and cleaning functions as claimed in claim 1, characterized in that: the center of a circle of the partition plate (1.7) at the lower bending section (1.3) is the same as that of the arc part at the outer side of the lower bending section (1.3), and the height of the scraper (2.2) is matched with the distance from the partition plate (1.7) to the arc part at the outer side of the lower bending section (1.3); the circle centers of the partition plate (1.7) at the upper bending section (1.5) and the arc part at the inner side of the upper bending section (1.5) are the same, and the height of the scraper (2.2) is matched with the distance from the partition plate (1.7) to the arc part at the inner side of the upper bending section (1.5).
5. The sludge scraper with self-protection and cleaning functions as claimed in claim 1, characterized in that: the feeding protection device (4) are installed to the feed inlet department of feed section (1.2), and feeding protection device (4) are equipped with feed inlet (4.2) including feed casing (4.1) upper end, feed casing (4.1), the lower extreme is equipped with discharge gate (4.3), be equipped with flashboard (4.4) in feed casing (4.1), install in pivot (4.5) flashboard (4.4) upper end, flashboard (4.4) lower extreme passes through cam conveying subassembly (4.6) drive swing back and forth.
6. The sludge scraper with self-protection and cleaning functions as claimed in claim 5, characterized in that: and a spring assembly (4.7) is fixed on the gate plate (4.4) between the cam transmission assembly (4.6) and the rotating shaft (4.5), the other end of the spring assembly (4.7) is installed on a pressure sensor (4.8), and the pressure sensor (4.8) is fixed on the feeding shell (4.1).
7. The sludge scraper with self-protection and cleaning functions as claimed in claim 1, characterized in that: install automatic clear material device (5) in head (1.6), automatic clear material device (5) are including clear material axle (5.1), install clearance sprocket (5.2), clearance blade (5.3) on clear material axle (5.1), and wherein clearance sprocket (5.2) and single chain (2.1) meshing, clearance blade (5.3) scrape the material to scraper blade (2.2) back when clear material axle (5.1) rotates.
8. The sludge scraper with self-protection and cleaning functions as claimed in claim 7, characterized in that: the outer end of the cleaning blade (5.3) is bent towards the rotating direction, and the inner side of the cleaning blade is provided with a high molecular polyethylene plate (3) through a bolt.
9. The sludge scraper with self-protection and cleaning functions as claimed in claim 1, characterized in that: the clearance between the scraper (2.2) and the inner wall of the material running cavity (1.9) is between 5mm and 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210934109.7A CN115258544A (en) | 2022-08-04 | 2022-08-04 | Sludge scraper with self-protection and cleaning functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210934109.7A CN115258544A (en) | 2022-08-04 | 2022-08-04 | Sludge scraper with self-protection and cleaning functions |
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| CN115258544A true CN115258544A (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210934109.7A Pending CN115258544A (en) | 2022-08-04 | 2022-08-04 | Sludge scraper with self-protection and cleaning functions |
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| CN (1) | CN115258544A (en) |
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