CN215712530U

CN215712530U - Negative pressure extrusion roller set

Info

Publication number: CN215712530U
Application number: CN202121440090.8U
Authority: CN
Inventors: 朱冰; 朱辉
Original assignee: Guangzhou Lvding Environmental Protection Equipment Co ltd
Current assignee: Guangzhou Lvding Environmental Protection Equipment Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-02-01
Anticipated expiration: 2031-06-25

Abstract

The utility model relates to a negative pressure extrusion roller set, which has the technical scheme that: the method comprises the following steps: the device comprises a frame, a filter screen group for conveying sludge, a negative pressure squeeze roll for absorbing sludge moisture in the filter screen group, and a plurality of positioning squeeze rolls for pressing the filter screen group on the negative pressure squeeze roll; the negative pressure extrusion roller and the plurality of positioning extrusion rollers are rotatably arranged on the rack; the filter screen group comprises a first filter screen and a second filter screen which is correspondingly attached to the first filter screen to convey sludge; the first filter screen is wound on the positioning extrusion rollers; the second filter screen is wound on the negative pressure squeezing roller; this application has the advantage that can carry out high-efficient degree of depth dehydration to mud.

Description

Negative pressure extrusion roller set

Technical Field

The utility model relates to the technical field of environmental treatment equipment, in particular to a negative pressure extrusion roller set.

Background

Currently, with the economic development of China and the gradual enhancement of awareness of people on environmental protection, river dredging engineering becomes more and more important. River sludge dewatering is an important part of sludge treatment, and usually, a mechanical dewatering method is adopted, for example, the water content of sludge is filtered and squeezed by adopting the pressure of an upper water filter screen and a lower water filter screen, so that solid particles are left on the filter screens to form solid filter cakes, and the filter cakes are used as planting sludge.

However, the dewatering efficiency of the sludge dewatering equipment on the market is not high, and the dewatering effect is not ideal, so that the improvement space is left.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a negative pressure extrusion roller set which has the advantage of being capable of efficiently and deeply dewatering sludge.

The technical purpose of the utility model is realized by the following technical scheme: an array of negative pressure compression rollers comprising: the device comprises a frame, a filter screen group for conveying sludge, a negative pressure squeeze roll for absorbing sludge moisture in the filter screen group, and a plurality of positioning squeeze rolls for pressing the filter screen group on the negative pressure squeeze roll; the negative pressure extrusion roller and the plurality of positioning extrusion rollers are rotatably arranged on the rack; the filter screen group comprises a first filter screen and a second filter screen which is correspondingly attached to the first filter screen to convey sludge; the first filter screen is wound on the positioning extrusion rollers; the second filter screen is wound on the negative pressure squeezing roller.

Optionally, the negative pressure squeezing roller is internally provided with a cavity; the outer wall of the negative pressure extrusion roller is provided with a plurality of communicating holes distributed along the circumferential direction of the negative pressure extrusion roller; the communication holes are all communicated with the cavity; an air flow pipeline is arranged at the end part of the negative pressure squeezing roller; the airflow pipeline is communicated with the cavity; a negative pressure device is arranged on the frame; the output end of the negative pressure device is communicated with the airflow pipeline.

Optionally, both ends of the negative pressure squeeze roll are provided with convex rings for blocking sludge.

Optionally, a driving motor is arranged on the negative pressure squeezing roller and at one end opposite to the airflow pipeline; the driving motor is arranged on the rack.

Optionally, a check valve is arranged in the communication hole; the end part of the negative pressure squeezing roller is provided with a plurality of drainage pipelines communicated with the cavity.

Optionally, a drain valve is arranged on the drain pipeline.

In conclusion, the utility model has the following beneficial effects: when needs dewater mud, mud is in between first filter screen and the second filter screen, and through the extrusion of negative pressure squeeze roll and a plurality of location squeeze roll, wherein first filter screen and second filter screen water-permeable, when mud between first filter screen and the second filter screen passes through between negative pressure squeeze roll and the location squeeze roll, there is the negative pressure in the negative pressure squeeze roll, and will absorb the moisture in the mud, thereby make mud carry out the negative pressure dehydration when carrying out the extrusion dehydration, thereby accomplish the degree of depth dehydration to mud.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic cross-sectional structure of the present invention.

In the figure: 1. a first filter screen; 2. a second filter screen; 3. a negative pressure squeeze roll; 4. positioning the extrusion roller; 5. a cavity; 6. a communicating hole; 7. an air flow conduit; 8. a convex ring; 9. a non-return valve; 10. a water discharge pipeline; 11. a drain valve.

Detailed Description

In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the utility model are presented in the drawings. 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 present invention, unless otherwise expressly specified 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 connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. 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 implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, configuration, and operation, and therefore should not be construed as limiting the present invention.

The utility model is described in detail below with reference to the figures and examples.

The present invention provides a negative pressure compression roller set, as shown in fig. 1 and 2, comprising: the device comprises a frame, a filter screen group for conveying sludge, a negative pressure squeeze roll 3 for absorbing sludge moisture in the filter screen group, and a plurality of positioning squeeze rolls 4 for pressing the filter screen group on the negative pressure squeeze roll 3; the negative pressure extrusion roller 3 and the plurality of positioning extrusion rollers 4 are rotatably arranged on the frame; the filter screen group comprises a first filter screen 1 and a second filter screen 2 which is correspondingly attached to the first filter screen 1 to convey sludge; the first filter screen 1 is wound on a plurality of positioning extrusion rollers 4; the second filter screen 2 is wound on the negative pressure squeezing roller 3. When needs dewater mud, mud is in between first filter screen 1 and the second filter screen 2, and through the extrusion of negative pressure squeeze roll 3 and a plurality of location squeeze roll 4, wherein first filter screen 1 and second filter screen 2 water-permeable, when mud between first filter screen 1 and the second filter screen 2 passes through between negative pressure squeeze roll 3 and the location squeeze roll 4, there is the negative pressure in the negative pressure squeeze roll 3, and will absorb the moisture in the mud, thereby make mud carry out the negative pressure dehydration when carrying out the extrusion dehydration, thereby accomplish the degree of depth dehydration to mud.

Further, the negative pressure squeezing roller 3 has a cavity 5 therein; the outer wall of the negative pressure squeezing roller 3 is provided with a plurality of communicating holes 6 distributed along the circumferential direction; the communication holes 6 are communicated with the cavity 5; an air flow pipeline 7 is arranged at the end part of the negative pressure squeezing roller 3; the air flow pipeline 7 is communicated with the cavity 5; a negative pressure device is arranged on the frame; the output end of the negative pressure device is communicated with the airflow pipeline 7. The negative pressure device in the embodiment adopts a fan, and an air inlet of the fan is communicated with an airflow pipeline 7; specifically, the negative pressure device continuously sucks air in the cavity 5, so that the positions of the communicating holes 6 are all negative pressure, and when sludge between the first filter screen 1 and the second filter screen 2 passes through the positions between the negative pressure squeezing rollers 3 and the positioning squeezing rollers 4, moisture in the sludge and squeezed moisture are sucked into the cavity 5 and discharged from the communicating holes 6 at low positions, and efficient and deep dehydration is achieved.

Optionally, both ends of the negative pressure squeeze roll 3 are provided with convex rings 8 for blocking sludge. The setting of bulge loop 8 for form a relative inclosed space between negative pressure squeeze roll 3 and the location squeeze roll 4, difficult edgewise spills over when the extrusion is received to the mud of parcel between first filter screen 1 and the second filter screen 2, and effectual improvement to the squeezing action of mud.

Optionally, a driving motor is arranged on the negative pressure squeezing roller 3 at one end opposite to the air flow pipeline 7; the driving motor is arranged on the rack. Through setting up driving motor for negative pressure squeeze roll 3 can initiatively rotate, improves the extrusion effect of negative pressure squeeze roll 3 and location squeeze roll 4.

Further, a check valve 9 is arranged in the communication hole 6; the end part of the negative pressure squeezing roller 3 is provided with a plurality of drainage pipelines 10 communicated with the cavity 5. Through setting up check valve 9 and drainage pipe 10 for the intercommunicating pore 6 only can be to intaking in cavity 5, and the water in cavity 5 can be discharged from drainage pipe 10, can avoid when negative pressure squeeze roll 3 rotates, and the water in cavity 5 throws away from intercommunicating pore 6 and leads to the mud rehydration after the extrusion.

Further, a drain valve 11 is provided on the drain pipe 10. The drain valves 11 are provided to open and close the respective drain pipes 10 as required.

The negative pressure extrusion roller set has the advantage of being capable of efficiently and deeply dewatering sludge.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. A negative pressure compression roller set, comprising: the device comprises a frame, a filter screen group for conveying sludge, a negative pressure squeeze roll for absorbing sludge moisture in the filter screen group, and a plurality of positioning squeeze rolls for pressing the filter screen group on the negative pressure squeeze roll; the negative pressure extrusion roller and the plurality of positioning extrusion rollers are rotatably arranged on the rack; the filter screen group comprises a first filter screen and a second filter screen which is correspondingly attached to the first filter screen to convey sludge; the first filter screen is wound on the positioning extrusion rollers; the second filter screen is wound on the negative pressure squeezing roller.

2. The set of suction squeeze rollers of claim 1, wherein said suction squeeze rollers have cavities therein; the outer wall of the negative pressure extrusion roller is provided with a plurality of communicating holes distributed along the circumferential direction of the negative pressure extrusion roller; the communication holes are all communicated with the cavity; an air flow pipeline is arranged at the end part of the negative pressure squeezing roller; the airflow pipeline is communicated with the cavity; a negative pressure device is arranged on the frame; the output end of the negative pressure device is communicated with the airflow pipeline.

3. The set of negative pressure squeeze rollers of claim 2, wherein both ends of the negative pressure squeeze rollers are provided with convex rings for blocking sludge.

4. The set of suction squeeze rollers of claim 3, wherein a drive motor is provided at an end of the suction squeeze roller opposite the air flow duct; the driving motor is arranged on the rack.

5. The set of negative pressure extrusion rollers of claim 1, wherein a check valve is provided in the communication hole; the end part of the negative pressure squeezing roller is provided with a plurality of drainage pipelines communicated with the cavity.

6. The set of suction squeeze rollers of claim 5, wherein a drain valve is provided on said drain line.