CN216918979U

CN216918979U - Roller extrusion type dehydrator

Info

Publication number: CN216918979U
Application number: CN202220766059.1U
Authority: CN
Inventors: 吴亮亮; 王方清; 王浩程; 杨对国
Original assignee: Zhejiang Kclear Environmental Protection Equipment Co ltd
Current assignee: Zhejiang Kclear Environmental Protection Equipment Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-07-08
Anticipated expiration: 2032-03-31

Abstract

The utility model relates to a roller extrusion type dehydrator, which comprises an extrusion roller and an extrusion plate, wherein an arc-shaped extrusion channel is formed between the outer wall of the extrusion roller and the extrusion plate, the length of the arc-shaped extrusion channel is L, the perimeter of the extrusion roller is C, particularly, L is not less than 1/2C and not more than 5/6C, the extrusion plate is composed of an annular filter belt, the thicknesses formed by the arc-shaped extrusion channel at a sludge inlet and a sludge outlet are h1 and h2 respectively, wherein h2 is less than h1, the thickness of the arc-shaped extrusion channel from the sludge inlet to the sludge outlet is gradually reduced, the dehydrator also comprises a sludge outlet guide channel arranged at the sludge outlet, and the annular filter belt is consistent with the movement direction of the extrusion roller and transmits sludge from the sludge inlet to the sludge outlet guide channel. On one hand, the utility model effectively improves the dehydration rate by extending the length of the arc-shaped extrusion channel and having small thickness change rate; on the other hand, the dehydrated sludge is convenient to discharge under the transmission of the arc-shaped extrusion channel formed by the equidirectional movement, and the dehydration efficiency is further improved.

Description

Roller extrusion type dehydrator

Technical Field

The utility model belongs to the field of sludge treatment equipment, and particularly relates to a roller extrusion type dehydrator.

Background

With the development of social economy and the acceleration of urbanization process, the number of urban sewage treatment plants and the sludge generated therewith is rapidly increased, and sludge treatment equipment is continuously updated to meet the requirement of sludge treatment. In the field, the sludge treatment equipment generally comprises a concentration unit and a dehydrator which are independently arranged, when sludge treatment is carried out, the concentration unit is firstly used for concentrating the thinner sludge, and the sludge with the reduced water content after concentration enters the dehydrator for dehydration.

At present, the hydroextractor that adopts is by two kinds more of electric osmosis formula and cylinder extrusion formula, however to the cylinder extrusion formula, it mainly forms the extrusion passageway through cylinder and corresponding stripper plate, carries out the extrusion dehydration again in mud entering extrusion passageway after the concentration.

However, the extrusion channel has a short forming length, and a change rate of the extrusion channel is very large to obtain a good dewatering efficiency and effect, so that the following technical defects are present:

1. the efficiency of discharging sludge from the extrusion channel is very low, and the dehydration rate is influenced because the extrusion channel is too short;

2. the stresses that develop on the rollers and the press plates are very high and therefore easily cause deformations affecting the rate of thickness variation of the press channel and consequently the dewatering.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide an improved roller extrusion type dehydrator.

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

the utility model provides a cylinder extrusion dewaterer, it is including can be around self axis pivoted squeeze roll, the stripper plate, wherein form arc extrusion passageway between squeeze roll outer wall and the stripper plate, arc extrusion passageway has into mud mouth and a mud mouth, arc extrusion passageway length is L, the perimeter of squeeze roll is C, especially, 1/2C is no less than L is no less than 5/6C, the stripper plate comprises annular filtering belt, the thickness that arc extrusion passageway formed at into mud mouth and mud mouth is h1 and h2 respectively, wherein h2 < h1, and diminish gradually from the arc extrusion passageway thickness of entering mud mouth to the mud mouth, the dewaterer still includes the mud guide way of going out that sets up in mud mouth, annular filtering belt is unanimous with the direction of motion of stripper roll and transmits mud from entering mud mouth to going out mud guide way.

Preferably, the annular filter belt comprises a filter belt body and a transmission roller group formed in the filter belt body, wherein the transmission roller group comprises a plurality of extrusion rollers, mud discharging transmission rollers and transfer transmission rollers which are distributed around the center of the extrusion roller at intervals, and the filter belt body is sleeved on the extrusion rollers, the mud discharging transmission rollers and the transfer transmission rollers and forms a closed ring. So, form the effective support of arc extrusion passageway through the squeeze roll, carry out mud guiding channel through going out mud transmission roller with the mud after the extrusion, through the transfer transmission of transfer transmission roller, realize the annular motion of annular filter belt.

Further, the extrusion roller can be movably adjusted and arranged along the radial direction of the extrusion roller. Therefore, the thickness of the arc-shaped extrusion channel is adjusted according to actual requirements so as to meet the extrusion requirements.

According to a specific implementation and a preferable aspect of the utility model, the mud discharging conveying roller is in synchronous transmission connection with the squeezing roller, and the squeezing roller and the filter belt body move synchronously. Therefore, the same power source can be shared, and the synchronous movement of the roller and the filter belt body can be controlled conveniently.

According to a further embodiment and preferred aspect of the present invention, the dewatering machine further comprises a squeezing base having a squeezing chamber formed therein, the squeezing chamber being closed by the filter belt body and the squeezing roller; and the negative pressure vacuumizing mechanism is communicated with the extrusion cavity of the extrusion seat, a mud discharging guide channel is formed between the filter belt body between the mud outlet and the mud discharging conveying roller and the extrusion seat, negative pressure is formed in the extrusion cavity, and extruded water is pumped out of the extrusion cavity. Draw water through the negative pressure, not only make things convenient for the collection that filters out muddy water from the filter belt body, can further promote the extrusion dehydration rate moreover (avoid the filtration pore to appear blockking up, in case there is water can the suction simultaneously).

According to another specific implementation and preferred aspect of the utility model, the sludge delivery roll is flush with the uppermost squeeze roll, the filter belt body forming the sludge guide channel is horizontally arranged, the dewatering machine further comprises an inlet sludge guide member and an outlet sludge guide member which are respectively arranged at the inlet and the outlet of the sludge guide channel, wherein the inlet sludge guide member comprises a sludge inlet scraper which extends along the length direction of the squeeze roller and the lower part of which is abutted against the surface of the squeeze roller, and an arc-shaped sludge guide plate which is arranged at the top of the sludge inlet scraper and is in arc transition to the top of the squeezing seat; the outlet mud guide piece comprises a mud discharging joint and a mud discharging scraper, wherein the mud discharging joint is butted with an arc-shaped channel formed at the mud discharging conveying roller and extends along the tangential direction, and the mud discharging scraper is arranged in the mud discharging joint and is abutted against the surface of the filter belt body. The guide and mud inlet scrapers are formed at the inlet of the mud outlet guide channel, so that the mud can conveniently enter the mud outlet guide channel, and the probability that the mud is adhered to the surface of the extrusion roller is reduced under the scraping of the mud scrapers; the mud that unloads that export formation of mud guide way connects and goes out the mud scraper blade, and the mud of being convenient for is thrown away from going out mud guide way, and what go out the mud scraper blade simultaneously scrapes and establishes down, reduces the probability that mud bonds and strains the surface at the annular.

Preferably, a mud discharging channel is formed in the mud discharging joint, the angle formed by the mud discharging channel and the vertical direction is 30-60 degrees, and the mud discharging scraper plate forms the bottom wall of the mud discharging channel. The formed sludge scraping effect is good, the sludge is convenient to centrifugally throw away, and the sludge yield is improved.

Preferably, the mud outlet is positioned above the mud inlet, and the mud inlet extends up and down to be tangential to the circumferential direction of the extrusion roller. Thus being beneficial to the concentrated sludge to enter the arc-shaped extrusion channel and increasing the dehydration efficiency.

In addition, the surface of the extrusion roller is provided with water filtering holes, the dehydrator further comprises a roller cleaning mechanism for respectively cleaning the surface of the extrusion roller and a filter belt cleaning mechanism for respectively cleaning the front surface and the back surface of the annular filter belt, and the roller cleaning mechanism and the filter belt cleaning mechanism synchronously clean the extrusion roller and the annular filter belt. The squeezing roller collects the internally filtered mud water from the water filtering holes, so that the dehydration rate is improved; simultaneously, under the setting of clean mechanism, avoid the filtration pore of straining pore and annular filter belt to block up to promote the dehydration rate of mud extrusion.

Furthermore, the roller cleaning mechanism is positioned between the sludge inlet and the sludge outlet, the filter belt cleaning mechanism is positioned on two sides of the moving path of the annular filter belt, and the roller cleaning mechanism and the filter belt cleaning mechanism respectively comprise a cleaning seat forming a cleaning cavity, a cleaning rolling brush positioned in the cleaning cavity and a cleaning liquid pipeline, wherein the cleaning liquid pipeline comprises a liquid inlet pipe communicated with the water outlet of the sludge concentration cylinder and a water outlet pipe communicated with the cleaning seat; and the roller cleaning mechanism and the cleaning roller brush rotate oppositely to the extrusion roller, and the cleaning roller brushes of the filter belt cleaning mechanisms positioned at two sides of the annular filter belt are staggered up and down and synchronously rotate oppositely. Such a layout, not only rational in infrastructure, extrusion cylinder outer wall and annular filter belt directly form clear arc extrusion passageway after clean moreover. Meanwhile, the cleaning roller brushes move oppositely, so that the cleaning roller brushes are not only beneficial to cleaning, but also beneficial to the movement of the squeezing roller and the annular filter belt, and especially the cleaning efficiency and the cleaning effect of the annular filter belt are further improved in the staggered and opposite movement of the front surface and the back surface of the annular filter belt.

Due to the implementation of the technical scheme, compared with the prior art, the utility model has the following advantages:

on one hand, the utility model effectively improves the dehydration rate by extending the length of the arc-shaped extrusion channel and having small thickness change rate; on the other hand, under the transmission of the arc-shaped extrusion channel formed by the equidirectional movement, the dewatered sludge is convenient to discharge, thereby further improving the dewatering efficiency.

Drawings

The utility model is described in further detail below with reference to the following figures and specific examples:

FIG. 1 is a schematic front view of a drum extruder dehydrator of the present invention;

FIG. 2 is a rear view of FIG. 1;

FIG. 3 is a schematic partial cross-sectional view of FIG. 2;

wherein: 1. a squeeze roller; 2. squeeze plates (endless filter belt); 20. a filter belt body; 21. a set of transport rollers; 210. a squeeze roll; 211. a sludge discharging conveying roller; 212. a transfer roller; 213. a filter belt tensioning adjusting roller; 3. a pressing base; 4. a negative pressure vacuum pumping mechanism; 40. a vacuum water tank; 41. an air exhaust pipe; 42. a water pumping pipe; 43. a vacuum pump; 5. a mud discharge guide channel; 6. an inlet mud guide part; 60. a mud feeding scraper; 61. an arc-shaped mud guide plate; 610. a rounded corner portion; 611. an inclined portion; 7. an outlet mud guide part; 70. a mud discharging joint; 71. a mud scraper is used for discharging mud; 8. a drum cleaning mechanism; 9. a filter belt cleaning mechanism; 80, 90, a cleaning seat; 81, 91, cleaning a rolling brush; 82, 92, a cleaning liquid pipeline; 820, 920, liquid inlet pipe; 821, 921, drain pipe; q, an arc-shaped extrusion channel; c1, c2, c6 and gears; c3, c7, synchronization chain; c4, tension gear; c5, power gear; c8, transmission gear.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features, or indirectly contacted with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1, the roller squeeze dehydrator of the present embodiment includes a squeeze roller 1 and a squeeze plate 2 that can rotate around their axes, where the squeeze plate 2 is formed by an annular filter belt, and an arc-shaped squeeze channel Q is formed between the outer wall of the squeeze roller 1 and the annular filter belt.

Specifically, the thicknesses of the arc-shaped extrusion channel Q formed at the mud inlet and the mud outlet are h1 and h2 respectively, wherein h2 is less than h1, and the thickness of the arc-shaped extrusion channel from the mud inlet to the mud outlet is gradually reduced.

As shown in fig. 2 and 3, the length of the arc-shaped extrusion channel Q is L, the circumference of the extrusion drum 1 is C, and C is 3/4L, wherein the mud inlet is located below the mud outlet, and the arc-shaped extrusion channel Q at the mud inlet extends up and down and is tangent to the circumferential direction of the extrusion drum 1. Therefore, not only can enough extrusion space be ensured, but also the thickness change rate of the formed space is small, and the dehydration rate is effectively improved; meanwhile, the position distribution of the sludge inlet is more favorable for concentrated sludge to enter the arc-shaped extrusion channel Q, and the dehydration efficiency is increased.

The surface of the extrusion roller 1 is formed with water filtering holes, and water generated by extrusion can be filtered out from the water filtering holes.

The endless filter belt includes a filter belt body 20, a set of transport rollers 21 formed within the filter belt body 20, wherein the filter belt body 20 may be a conventional filter belt cloth.

The transmission roller group roller 21 comprises a plurality of extrusion rollers 210, mud discharging transmission rollers 211 and transfer transmission rollers 212 which are distributed around the center of the extrusion roller 1 at intervals, and the filter belt body 20 is sleeved on the extrusion rollers 210, the mud discharging transmission rollers 211 and the transfer transmission rollers 212 and forms a closed ring. In this way, effective support of the arc-shaped extrusion channel is formed by the extrusion rollers; the extruded sludge is taken out through a sludge outlet transmission roller; the annular movement of the annular filter belt is realized through the transfer transmission of the transfer transmission roller.

In this example, the conveying roller group 21 further includes a belt tension adjusting roller 213, wherein the tightness of the belt body 20 is adjusted by the belt tension adjusting roller 213, so that the belt body 20 forming the arc-shaped pressing passage Q provides the best pressing effect.

The pressing roller 210 is movably adjustable in the radial direction of the pressing cylinder 1. Therefore, the thickness of the arc-shaped extrusion channel is adjusted according to actual requirements so as to meet the extrusion requirements.

The sludge outlet transmission roller 211 is in synchronous transmission connection with the extrusion roller 1, the extrusion roller 1 and the filter belt body 20 move synchronously, and sludge is transmitted from the sludge inlet to the sludge outlet in the same movement direction. Therefore, the same power source can be shared, and the synchronous movement of the roller and the filter belt body can be controlled conveniently.

Specifically, a gear c1 is formed at the end of the squeezing roller 1, a gear c2 is also arranged at the end of the mud discharging conveying roller 211, then a synchronous chain c3 is adopted to synchronously connect the two gears c1 and c2, and meanwhile, the synchronous chain c3 is in transmission connection with a power gear c5 driven by a motor through a tensioning gear c4, so that under the output of the power gear c5, the squeezing roller 1 and the filter belt body 20 synchronously move.

Meanwhile, the mud output transmission roller 211 is arranged flush with the extrusion roller 210 positioned at the uppermost part, and the dehydrator also comprises an extrusion seat 3, wherein a closed extrusion cavity is formed inside the extrusion seat, and the extrusion seat, the filter belt body 20 and the extrusion roller 1 form a closed extrusion cavity; and the negative pressure vacuumizing mechanism 4 is communicated with the extrusion cavity of the extrusion seat 3, a mud outlet guide channel 5 is formed between the filter belt body 20 from the mud outlet to the mud outlet transmission roller 211 and the extrusion seat 3, the negative pressure vacuumizing mechanism 4 keeps negative pressure in the extrusion cavity, and water separated by extrusion is pumped out of the extrusion cavity. Draw water through the negative pressure, not only make things convenient for the collection that filters out muddy water from the filter belt body, can further promote the extrusion dehydration rate moreover (avoid the filtration pore to appear blockking up, in case there is water can the suction simultaneously).

Specifically, the negative pressure vacuum pumping mechanism 4 comprises a vacuum water tank 40, an exhaust pipe 41 and a water pumping pipe 42 which are communicated with the vacuum water tank 40, and a vacuum pump 43 which is communicated with the exhaust pipe 41, wherein the water pumping pipe 42 is connected to the extrusion base 3 and is communicated with the extrusion cavity.

The filter belt body forming the mud outlet guide channel 5 is horizontally arranged, and the dehydrator also comprises an inlet mud guide piece 6 and an outlet mud guide piece 7 which are respectively arranged at the inlet and the outlet of the mud outlet guide channel 5.

Specifically, the inlet mud guide 6 includes a mud inlet scraper 60 extending along the length direction of the extrusion roller 1 and having a lower portion abutting against the surface of the extrusion roller 1, and an arc mud guide plate 61 disposed on the top of the mud inlet scraper 60 and having an arc transition to the top of the extrusion seat 3. The direction that forms and income mud scraper blade at a mud guiding channel entry make things convenient for mud to get into a mud guiding channel, and establish under scraping of scraper blade, reduce the probability that mud bonds on the squeeze roll surface.

In this embodiment, the arc-shaped mud guide 61 is integrally formed with the extrusion seat 3, and the arc-shaped mud guide 61 includes a rounded portion 610 and an inclined portion 611 inclined inward, wherein the mud inlet scraper 60 is fixed to an outer side of the inclined portion 611, a guide slope is formed at a lower end portion of the inclined portion 611, and the scraped mud is guided along a slope surface into a channel formed by the rounded portion 610.

The outlet mud guide 7 includes a mud discharging joint 70 abutting on the arc-shaped path formed at the mud discharging conveying roller 211 and extending in a tangential direction, and a mud discharging scraper 71 provided in the mud discharging joint 70 and abutting on the surface of the filter belt body. The mud that unloads that export formation of mud guide way connects and goes out the mud scraper blade, and the mud of being convenient for is thrown away from going out mud guide way, and what go out the mud scraper blade simultaneously scrapes and establishes down, reduces the probability that mud bonds and strains the surface at the annular.

In this example, a mud discharge channel is formed inside the mud discharge joint 70, the angle formed by the mud discharge channel and the vertical direction is 30 °, and the mud discharge scraper 71 forms the bottom wall of the mud discharge channel. The formed sludge scraping effect is good, the sludge is convenient to centrifugally throw away, and the sludge yield is improved.

The dehydrator also comprises a roller cleaning mechanism 8 for cleaning the surface of the squeezing roller 1 respectively, and a filter belt cleaning mechanism 9 for cleaning the front and the back of the annular filter belt respectively, and under the arrangement of the cleaning mechanism, the filter holes of the water filtering holes and the annular filter belt are prevented from being blocked, so that the dehydration rate of sludge squeezing is improved.

In this example, the roller cleaning mechanism 8 is located between the mud inlet and the mud outlet, and the belt cleaning mechanism 9 is located on both sides of the moving path of the endless belt.

Specifically, the roller cleaning mechanism 8 comprises a cleaning seat 80, a cleaning roller brush 81 and a cleaning liquid pipeline 82, wherein the cleaning liquid pipeline 82 comprises a liquid inlet pipe 820 communicated with a water outlet of the sludge concentration cylinder and a water outlet pipe 821 communicated with the cleaning seat 80.

In this embodiment, the cleaning seat 80 and the outer wall surface of the squeeze roller 1 form a relatively closed cavity, wherein the upper portion of the cavity is communicated with the water outlet of the sludge concentration tank through the liquid inlet pipe 820, the cleaning roller 81 extends along the length direction of the squeeze roller 1, and brushes the surface of the squeeze roller 1 around the center line of the length direction and the squeeze roller 1 in the opposite direction or in the reverse direction, and the brushed mud and water is discharged from the water discharge pipe 821, so that the squeeze roller 1 is surface-cleaned by the water separated by concentration during the operation, and the water filtering holes on the surface of the squeeze roller are not easily blocked.

Two groups of filter belt cleaning mechanisms 9 are arranged on the front surface and the back surface of the filter belt body 20 correspondingly.

In this embodiment, taking the front side as an example, the belt cleaning mechanism 9 includes a cleaning base 90, a cleaning roller brush 91, and a cleaning liquid pipeline 92, wherein the cleaning liquid pipeline 92 includes a liquid inlet pipe 920 communicated with the water outlet of the sludge concentration cylinder, and a water outlet pipe 921 communicated with the cleaning base 90.

Specifically, a water receiving cavity is formed in the cleaning seat 90, the cleaning rolling brush 91 is rotatably arranged in the water receiving cavity, and a water outlet of the concentration cylinder is respectively communicated with the two water receiving cavities on the front side and the back side of the filter belt body 20 through branch circuits.

In this embodiment, the cleaning rollers 91 corresponding to the front and back surfaces rotate in opposite directions, specifically, the two gears c6 are engaged to rotate in opposite directions, and the synchronous chain c7 is connected to the transmission gear c8 of the cleaning roller 81 in a transmission manner, so as to ensure that the squeezing roller 1 and the belt body 20 are cleaned synchronously, and the outer wall of the squeezing roller and the annular filter belt are cleaned to directly form a clean arc-shaped squeezing channel Q.

In addition, the front and rear cleaning rollers 91 are disposed to be vertically staggered, so that the cleaning of the belt body 20 can be performed more preferably.

In summary, the implementation process of this embodiment is as follows:

from sludge concentration device's play mud passageway exhaust mud, get into the income mud mouth of the arc extrusion passageway Q that squeeze roll 1 and annular form's screen body 20 formed, and under squeeze roll 1 and the extrusion of screen body 20 motion, mud is carried after going out mud from going into the mud mouth, and take extruded negative pressure water out and strain to squeeze roll 1 and collect in transportation process, mud through extrusion simultaneously gets into out mud guide way 5, and under screen body 20 motion, discharge from the mud passageway, accomplish the dehydration of mud.

Therefore, the present embodiment has the following advantages:

1. the dehydration rate is effectively improved by the extension of the length of the arc-shaped extrusion channel and the small thickness change rate;

2. the dewatered sludge is conveniently discharged under the transmission of an arc-shaped extrusion channel formed by the equidirectional movement, so that the dewatering efficiency is further improved;

3. under the premise of pumping water under negative pressure, sludge is extruded, and the dehydration rate is further improved;

4. under the arrangement of the mud inlet scraper and the mud outlet scraper, sludge on the roller and the filter belt body is scraped, and simultaneously, the roller and the filter belt body are respectively cleaned by the cleaning rolling brush which moves synchronously, so that the water filtering holes of the formed arc extrusion channel are ensured to be in a smooth state, and the dehydration is facilitated;

5. the cleaning of the roller and the filter belt body is carried out by adopting the water formed by the sludge concentration device, so that the cleaning is facilitated in the opposite movement of the cleaning roller brush, the movement of the squeezing roller and the annular filter belt is facilitated, and especially in the staggered opposite movement of the front surface and the back surface of the annular filter belt, the cleaning efficiency and the cleaning effect of the annular filter belt are further improved;

6. the mud outlet guide channel is arranged to facilitate the discharge of the mud, and the mud sticking rate of the surfaces of the roller and the filter belt body is greatly reduced under the assistance of the inlet mud guide piece and the outlet mud guide piece of the inlet and the outlet, so that the subsequent cleaning is facilitated;

7. the thickness of the arc-shaped extrusion channel can be adjusted at any time according to the extrusion requirement by arranging the extrusion rollers which can be movably adjusted along the radial direction of the extrusion roller;

8. the extrusion roller and the annular filter belt synchronously move and share one drive, so that the mud discharging is convenient to control, and the cost is saved; meanwhile, the cleaning rolling brushes of the roller and the filter belt body synchronously move and share one drive, so that the cleaning is convenient to implement, and the cost is saved.

The present invention has been described in detail in order to enable those skilled in the art to understand the utility model and to practice it, and it is not intended to limit the scope of the utility model, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the present invention.

Claims

1. The utility model provides a cylinder extrusion formula hydroextractor, its is including can be around self axis pivoted squeeze roll, stripper plate, wherein squeeze roll outer wall with form arc extrusion passageway between the stripper plate, arc extrusion passageway has into mud mouth and a mud mouth, arc extrusion passageway length is L, squeeze roll's girth is C, its characterized in that: 1/2C is less than or equal to L is less than or equal to 5/6C, the stripper plate comprises annular filter belt, arc extrusion passageway is in advance the mud mouth with the thickness that the mud mouth formed is h1 and h2 respectively, wherein h2 < h1, and certainly advance the mud mouth to the mud mouth arc extrusion passageway thickness diminishes gradually, the hydroextractor is still including setting up the play mud guide way of mud mouth department, annular filter belt with the direction of motion of extrusion cylinder is unanimous and with mud certainly advance the mud mouth to go out mud guide way transmission.

2. The roller extrusion dehydrator of claim 1, wherein: the annular filter belt includes the filter belt body, forms this internal transmission roller set of filter belt, wherein the transmission roller set roller includes many round squeeze roll, play mud transmission roller, the transfer transmission roller of squeeze roll center interval distribution, the filter belt body cover is established squeeze roll, play mud transmission roller, transfer transmission roller are last and constitute closed annular.

3. The roller extrusion dehydrator of claim 2, wherein: the extrusion roller can be movably adjusted and arranged along the radial direction of the extrusion roller.

4. The roller extrusion dehydrator of claim 2, wherein: the mud discharging transmission roller is in synchronous transmission connection with the squeezing roller, and the squeezing roller and the filter belt body move synchronously.

5. The roller extrusion dehydrator of claim 2, wherein: the dehydrator also comprises an extrusion seat, wherein a closed extrusion cavity is formed inside the extrusion seat, and the extrusion seat, the filter belt body and the extrusion roller form a closed extrusion cavity; and the negative pressure vacuumizing mechanism is communicated with the extrusion cavity of the extrusion seat, a mud outlet guide channel is formed between the filter belt body between the mud outlet and the mud outlet transmission roller and the extrusion seat, the negative pressure vacuumizing mechanism keeps negative pressure in the extrusion cavity, and water removed by extrusion is pumped out of the extrusion cavity.

6. The roller extrusion dehydrator of claim 5, wherein: the mud discharging transmission roller is flush with the extrusion roller positioned at the uppermost part, the filter belt body forming the mud discharging guide channel is horizontally arranged, the dehydrator also comprises an inlet mud guide piece and an outlet mud guide piece which are respectively arranged at the inlet and the outlet of the mud discharging guide channel, wherein the inlet mud guide piece comprises a mud inlet scraper blade which extends along the length direction of the extrusion roller and the lower part of the inlet mud guide blade is abutted against the surface of the extrusion roller, and an arc mud guide plate which is arranged at the top of the mud inlet scraper blade and is in arc transition to the top of the extrusion seat; the export lead mud spare include with go out mud transmission roller department and locate the arc passageway butt joint that forms and along the mud joint that unloads of tangential direction extension and set up unload in the mud joint and contradict and be in the play mud scraper blade on filter belt body surface.

7. The roller extrusion dewaterer of claim 6, characterized in that: the mud discharging joint is internally provided with a mud discharging channel, the angle formed by the mud discharging channel and the vertical direction is 30-60 degrees, and the mud discharging scraper plate forms the bottom wall of the mud discharging channel.

8. The roller extrusion dehydrator of claim 1, wherein: the mud outlet is positioned above the mud inlet, and the mud inlet extends up and down to be tangential to the circumferential direction of the extrusion roller.

9. The roller extrusion dehydrator of claim 1, wherein: the dewatering machine further comprises a roller cleaning mechanism for cleaning the surface of the squeezing roller and a filter belt cleaning mechanism for cleaning the front and the back of the annular filter belt respectively, wherein the roller cleaning mechanism and the filter belt cleaning mechanism clean the squeezing roller and the annular filter belt synchronously.

10. The roller extrusion dewaterer of claim 9, characterized in that: the roller cleaning mechanism is positioned between the sludge inlet and the sludge outlet, the filter belt cleaning mechanism is positioned on two sides of a moving path of the annular filter belt, and the roller cleaning mechanism and the filter belt cleaning mechanism respectively comprise a cleaning seat forming a cleaning cavity, a cleaning rolling brush positioned in the cleaning cavity and a cleaning liquid pipeline, wherein the cleaning liquid pipeline comprises a liquid inlet pipe communicated with a water outlet of the sludge concentration cylinder and a water outlet pipe communicated with the cleaning seat; and the roller cleaning mechanism and the cleaning roller brush rotate opposite to the extrusion roller, and the cleaning roller brushes of the filter belt cleaning mechanism positioned on two sides of the annular filter belt are staggered up and down and synchronously rotate opposite to each other.