Sludge treatment device with rapid dewatering function

Abstract

The application discloses a sludge treatment device with a rapid dehydration function, and relates to the technical field of sludge treatment. The sludge treatment device comprises a filter screen, the filter screen is annular, a rigid support is arranged in the filter screen, a feeding port is arranged on one side of the filter screen, the thickness of the filter screen near the feeding port is smaller than the thickness of the filter screen far from the feeding port, the filter screen is arranged in an inclined mode, an air pump and an electric heating net are arranged above the filter screen, an annular sleeve is arranged in the filter screen, a vertical air duct is formed in the annular sleeve, and the air pump is located directly above the air duct. The application realizes active cleaning of the filter screen through airflow. The annular frame arranged in the filter screen mainly separates impurities in the sludge, and cooperates with the airflow to crush the caked sludge, accelerates water loss in the sludge, and the annular frame in the self-rotation state pushes the stones in the sludge, and accelerates separation of the sludge on the surface of the stones.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge treatment, in particular to a sludge treatment device with rapid dewatering function. BACKGROUND

[0002] A sludge treatment method for removing water from the flowing primary, thickened or digested sludge to convert it into semi-solid or solid sludge cake. After dewatering, the moisture content of the sludge can be reduced to 55% to 80%, depending on the nature of the sludge and the sediment and the efficiency of the dewatering equipment. Further dewatering of the sludge is called sludge drying, and the moisture content of the dried sludge is less than 10%. The methods of dewatering mainly include natural drying method, mechanical dewatering method and granulation method. The natural drying method and the mechanical dewatering method are suitable for sewage sludge. The granulation method is suitable for coagulation and sedimentation sludge.

[0003] The existing sludge treatment equipment separates the sludge and the water in it by pressure when processing the sludge, but there are high-hardness impurities such as stones in the sludge. When the impurities contact the filter screen under the action of pressure, the filter screen will be damaged. When the impurities move on the surface of the filter screen, the filter screen will be further damaged. SUMMARY

[0004] The purpose of the present application is to provide a sludge treatment device with rapid dewatering function to solve the problems raised in the background.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a sludge treatment device with rapid dewatering function, comprising a filter screen, the filter screen is annular, a rigid support is arranged inside the filter screen, a feeding port is arranged on one side of the filter screen, the thickness of the filter screen near the feeding port is smaller than the thickness of the filter screen away from the feeding port, and the filter screen is arranged obliquely.

[0006] An air pump and an electric heating net are arranged above the filter screen, an annular sleeve is arranged inside the filter screen, a vertical air duct is arranged in the annular sleeve, and the air pump is located directly above the air duct.

[0007] Drive support wheels are arranged on the lower sides of the filter screen, a feeding port is arranged in front of the filter screen, the sludge to be treated is added into the filter screen through the feeding port, the drive support wheels are started at the same time, the outer wall of the drive support wheel is attached to the outer wall of the filter screen, the filter screen is annular, the drive support wheel drives the filter screen to rotate synchronously, the sludge in the filter screen moves synchronously with the filter screen, the water in the sludge passes through the gap of the filter screen under the action of centrifugal force, and the filter screen is used until the water in the sludge is reduced to a specified content.

[0008] The annular sleeve is arranged in the filter screen, the middle portion of the annular sleeve is provided with an air duct, the air pump and the electric heating net are arranged above the air duct and the filter screen, the air pump draws air flow outside, and then the air flow is heated by the electric heating net, and the heated air flow enters the air duct through the gap of the filter screen; due to the arrangement of the annular sleeve in the filter screen, the sludge directly enters the air duct after entering the filter screen through the feeding port, and directly falls at the lower connecting portion between the annular sleeve and the filter screen under the action of gravity; the sludge at the connecting portion moves relative to the filter screen, and under the action of the friction between the filter screen and the sludge, the filter screen drives the sludge in direct contact with the filter screen to move synchronously, and under the restriction of the centrifugal force and the annular sleeve, an annular sludge layer is formed between the filter screen and the annular sleeve.

[0009] Due to the arrangement of the air pump and the electric heating net above the filter screen, there is a vertical downward hot air flow in the hole eye above the filter screen; at this time, the sludge layer above the filter screen is separated from the filter screen under the action of the air flow and the gravity, the hot air flow cleans the gap above the filter screen, and the water in the gap is dried; the hot air flow passing through the gap heats and dries the falling sludge layer again.

[0010] Due to the inclined arrangement of the filter screen, the sludge in the filter screen is simultaneously affected by the gravity, and under the action of the gravity, the sludge in the filter screen moves along the inclined surface of the filter screen to the end where the discharge port is located; the feeding port and the discharge port are oppositely arranged with the filter screen as the center.

[0011] Further, the annular frame is arranged in the air duct, the guide plate is arranged in the annular frame, the guide plate is a spiral blade, the driving assembly is arranged at the front end of the guide plate, the driving assembly is used for controlling the movement of the annular frame, and the annular frame is connected with the feeding port; the sludge directly enters the annular frame after passing through the feeding port; due to the structure of the annular frame, the sludge can directly pass through the annular frame after entering the annular frame, but the large particles of the sludge cannot pass through the gap formed by the metal strip and the metal ring; the large particles include but are not limited to stones.

[0012] The guide plate is arranged in the annular frame, the driving assembly is arranged at the front end of the annular frame, the driving assembly drives the annular frame to move, the guide plate in the annular frame rotates, and due to the spiral blade of the guide plate, the guide plate drives the sludge and stones in the annular frame to move to the end of the discharge port during the rotation process, and accelerates the sludge in the annular frame to leave.

[0013] Further, the inside of the filter screen is provided with a plurality of guide vanes, the guide vanes are spiral blades, the inner diameter of the guide vanes is equal to the outer diameter of the annular sleeve; the guide vanes are arranged to cooperate with the rotating filter screen, since the guide vanes are installed inside the filter screen, and one end of the guide vanes is in close contact with the outer wall of the annular sleeve, the sludge moves along with the filter screen, and the sludge is in the gap between the filter screen and the annular sleeve, since there is a difference between the movement states of the filter screen and the annular sleeve, the synchronization in the gap between the filter screen and the annular sleeve is affected by the filter screen and the annular sleeve, at this time, the guide vanes push the sludge in the gap between the filter screen and the annular sleeve to the discharge port end;

[0014] Since there is a difference in the thickness of the gap at both ends of the filter screen and the annular sleeve, the thickness of the gap near the discharge port end is smaller than the thickness of the gap near the feed port end (hereinafter referred to as the extrusion cavity formed by the filter screen and the annular sleeve), so that when the sludge moves inside the extrusion cavity, as the width of the extrusion cavity gradually decreases, the extrusion intensity of the sludge inside the extrusion cavity increases, accelerating the separation of water inside the sludge.

[0015] Further, the annular frame is composed of a plurality of metal strips and a plurality of metal rings, the outer surface of the annular frame is annular, the outer wall surface of the annular frame is in close contact with the inner wall surface of the air duct, a plurality of protrusions are arranged on the inner wall of the air duct, the outer wall size of the protrusions matches the gap of the metal strips; the structure of the annular frame realizes the separation of sludge and large particle impurities.

[0016] Further, the driving assembly comprises a driving motor, the output end of the driving motor is connected to the annular frame in an eccentric manner, a connecting assembly is installed between the output end of the driving motor and the annular frame, the connecting assembly is used to adjust the distance between the center of the annular frame and the center of the output end of the motor, and the center of the output end of the driving motor and the center of the filter screen are located on the same horizontal straight line.

[0017] Further, the connecting assembly comprises a main rod and an annular plate, the annular plate is installed on both sides of the main rod, the annular plate is in sliding connection with the annular frame, the main rod is in sliding connection with the output shaft of the driving motor, one side of the main rod is provided with a spring rod, and both ends of the spring rod are connected with the output shaft of the driving motor and the main rod respectively; the driving assembly is internally provided with a driving motor, the driving motor drives the annular frame to move through the connecting assembly, since the output shaft of the driving motor and the main rod are in sliding connection, and the output shaft and the main rod are connected through the spring rod, the output shaft and the main rod are eccentrically arranged, and the main rod is in sliding connection with the annular plate and the annular frame;

[0018] During the movement of the driving motor through the output shaft and the connecting assembly, the annular frame performs a circular motion with the output shaft as the center, and due to the connection between the output shaft and the main rod through the spring rod and under the action of gravity, when the annular frame is located in the middle and below the center of rotation, the vertical component force of the spring rod naturally stretches downward coincides with the direction of gravity, at this time, the outer wall of the annular frame is in contact with the inner wall of the air duct, and due to the setting of the protrusions on the inner wall of the air duct, the protrusions and the metal strips produce meshing effect, and there is relative motion between the protrusions and the annular frame, when the protrusions contact the annular frame in the state of motion, the annular frame is deflected with its own center as the center.

[0019] When the annular frame is located above the middle of the center of rotation, the vertical component force of the spring rod naturally stretches downward is opposite to the direction of gravity, at this time, the spring rod is compressed, thereby reducing the distance between the horizontal line where the center of the annular frame is located and the horizontal line where the output shaft is located, realizing the deflection of the annular frame with the output shaft as the center when the annular frame is located in the middle and below the center of rotation, and the distance between the horizontal line where the center of the annular frame is located and the horizontal line where the output shaft is located is close and far away from each other when the annular frame is located above the middle of the center of rotation, the dividing plane between the annular frame close to and far away from the output shaft is the vertical plane where the center of the output shaft is located.

[0020] The motion state of the annular frame accelerates the separation of the sludge and the stones inside the annular frame, and when the annular frame is located above the plane where the center of the output shaft is located, the stones above the annular frame will fall under the action of gravity, so that the motion direction and speed of the stones change at any moment, so as to strip the sludge attached to the outer wall of the stones, and the stones stuck in the gap between the metal strips are cleaned through the contact between the protrusions and the annular frame, the annular frame rotates by the cooperation of the driving assembly and the connecting assembly, so as to move the stones inside the annular frame to the discharge port, and the annular frame is located in the air duct, the sludge forms sludge blocks through the extrusion of the filter screen and the annular sleeve, when the sludge blocks move above the inside of the filter screen, the sludge blocks and the filter screen are separated under the action of hot air flow and gravity and enter the air duct, the falling sludge blocks contact the annular frame, and the structure of the annular frame realizes the crushing of the sludge blocks after contacting the annular frame, the contact area between the crushed sludge and the hot air flow increases, and then the sludge passes through the gap of the annular frame again and enters the extrusion cavity, until it leaves the filter screen.

[0021] Further, the outer side of the filter screen is provided with a main body, the main body has a cavity inside, one side inner wall of the main body is attached to one side inner wall of the filter screen, the cavity is arranged on the other side of the main body and the filter screen, and a water outlet is arranged on one side below the middle of the main body; a control valve is arranged inside the water outlet, after the sludge inside the extrusion cavity is extruded, the water in the sludge enters the cavity through the pores of the filter screen, the water outlet is arranged below the inside of the cavity, a water level detector is arranged on one side below the inside of the cavity, and the water level detector feeds back the monitoring structure to the main body after monitoring that the water level inside the cavity rises to a specified position, the main body controls the control valve, the control valve is opened, and the water in the cavity leaves through the water outlet.

[0022] Further, the air inlet end of the air pump is communicated with the cavity, and the outer wall of the driving support wheel is provided with a rubber layer; the air inlet end of the air pump is communicated with the cavity, due to the fact that one side inner wall of the main body is attached to one side inner wall of the filter screen, the cavity is arranged on the other side of the main body and the filter screen, and the sludge in the extrusion cavity on the side where the cavity is arranged is in an upward state, under the action of the air pump, the inside of the cavity is in a negative pressure state, and the water in the sludge in the extrusion cavity is accelerated to separate under the action of the negative pressure.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] 1. The sludge treatment device with the rapid dehydration function, by arranging the filter screen, the air pump and the electric heating net, the filter screen is cleaned by the airflow, the direction of the airflow is opposite to the movement direction of the sewage when the sludge is extruded, the direction of the airflow is coincided with the direction of the gravity, the sludge is prevented from being stuck in the pores of the filter screen, the filtration effect of the filter screen is affected, the airflow after heating is contacted with the sludge, the sludge is dried, the water loss in the sludge is accelerated, and the filter screen in the cleaning area is dried;

[0025] 2. The sludge treatment device with the rapid dehydration function, by arranging the annular sleeve and the annular frame, the annular sleeve is connected with the main body, the filter screen is located in the gap between the annular sleeve and the main body, the hot airflow is generated and guided by the air duct, the stones in the annular frame are dried, the annular frame is used for separating the stones and the sludge, and the dropped sludge is crushed by cooperating with the airflow, so that the water loss in the sludge is accelerated;

[0026] 3. The sludge treatment device with the rapid dehydration function, by arranging the driving assembly and the connecting assembly, the driving assembly and the connecting assembly cooperate with the protrusions on the inner wall of the air duct, so that when the annular frame moves at variable speed and direction in the air duct, the protrusions and the annular frame are engaged, the annular frame rotates, the annular frame in the rotating state pushes the stones inside, and the sludge on the surface of the stones is separated. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of the specification, illustrate embodiments of the application and are used to explain the application, but are not intended to limit the application. In the drawings:

[0028] Figure 1 is the main view of the full structure schematic diagram of the application;

[0029] Figure 2 is the right side view of the full structure schematic diagram of the application;

[0030] Figure 3 is the oblique structure schematic diagram of the filter screen and its internal mechanism of the application;

[0031] Figure 4 is the three-dimensional structure schematic diagram of the annular sleeve of the application;

[0032] Figure 5 is the three-dimensional structure schematic diagram of the annular frame of the application;

[0033] Figure 6 is the main view structure schematic diagram of the connecting assembly of the application;

[0034] Figure 7 is the main view full structure schematic diagram of the connecting assembly of the application.

[0035] In the drawings: 1, filter screen; 101, driving support wheel; 102, guide vane; 2, air pump; 201, electric heating net; 3, annular sleeve; 301, air duct; 4, annular frame; 401, guide plate; 5, driving assembly; 6, connecting assembly; 601, main rod; 602, annular plate; 603, spring rod; 7, main body; 701, cavity. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0037] Please refer to Figures 1-7 The application provides a technical solution: a sludge treatment device with a rapid dewatering function, comprising a filter screen 1, the filter screen 1 is annular, a rigid support is arranged inside the filter screen 1, a feeding port is arranged on one side of the filter screen 1, the thickness of the filter screen 1 near the feeding port is smaller than the thickness of the filter screen 1 away from the feeding port, the filter screen 1 is arranged obliquely, and driving support wheels 101 are arranged on both sides of the lower part of the filter screen 1.

[0038] The inside of the filter screen 1 is provided with a plurality of guide vanes 102, the guide vanes 102 are spiral blades, the inner diameter of the guide vanes 102 is equal to the outer diameter of the annular sleeve 3;

[0039] The outside of the filter screen 1 is provided with a main body 7, the inside of the main body 7 has a cavity 701, one side inner wall of the main body 7 is attached to one side inner wall of the filter screen 1, the cavity 701 is arranged on the other side of the main body 7 and the filter screen 1, and a water outlet is arranged on one side of the lower middle part of the main body 7;

[0040] The air inlet end of the air pump 2 is communicated with the cavity 701, and the outer wall of the driving support wheel 101 is provided with a rubber layer;

[0041] The filter screen 1 is cleaned by air flow, the direction of the air flow is opposite to the movement direction of the sewage when the sludge is extruded, the direction of the air flow is coincided with the direction of the gravity, so that the sludge is prevented from being stuck in the pores of the filter screen 1, the filtering effect of the filter screen is affected, the air flow after heating is contacted with the sludge, the sludge is dried, the water loss in the sludge is accelerated, and the filter screen 1 in the cleaning area is dried;

[0042] The air pump 2 and the electric heating net 201 are arranged above the filter screen 1, the filter screen 1 has the annular sleeve 3, the annular sleeve 3 is internally provided with a vertical air duct 301, and the air pump 2 is located above the air duct 301;

[0043] The annular sleeve 3 is internally provided with the annular frame 4, the annular frame 4 is internally provided with the guide plate 401, the guide plate 401 is a spiral blade, the front end of the guide plate 401 is provided with the driving assembly 5, the driving assembly 5 is used for controlling the movement of the annular frame 4, and the annular frame 4 is connected with the feeding port;

[0044] The annular frame 4 is composed of a plurality of metal strips and a plurality of metal rings, the outer surface of the annular frame 4 is annular, the outer wall surface of the annular frame 4 is attached to the inner wall surface of the air duct 301, a plurality of protrusions are arranged on the inner wall of the air duct 301, and the outer wall size of the protrusions is matched with the gap of the metal strips;

[0045] The annular sleeve 3 is connected with the main body 7, the filter screen 1 is located in the gap between the annular sleeve 3 and the main body 7, the hot air flow is dried after being generated under the guidance of the air duct 301, the annular frame 4 is used for separating the stone and the sludge, and is matched with the air flow to crush the dropped sludge, so that the water loss in the sludge is accelerated;

[0046] The driving assembly 5 comprises a driving motor, the output end of the driving motor is eccentrically connected with the annular frame 4, a connecting assembly 6 is arranged between the output end of the driving motor and the annular frame 4, the connecting assembly 6 is used for adjusting the distance between the center of the annular frame 4 and the center of the output end of the motor, and the center of the output end of the driving motor and the center of the filter screen 1 are located on the same horizontal straight line;

[0047] The connecting assembly 6 includes a main rod 601 and an annular plate 602. The annular plate 602 is installed on both sides of the main rod 601 and is slidably connected to the annular frame 4. The main rod 601 is slidably connected to the output shaft of the drive motor. A spring rod 603 is installed on one side of the main rod 601, and the two ends of the spring rod 603 are respectively connected to the output shaft of the drive motor and the main rod 601.

[0048] The drive assembly 5 and the connecting assembly 6 work together with the protrusions on the inner wall of the air duct 301 so that when the ring frame 4 moves with different speeds and directions inside the air duct 301, the protrusions and the ring frame 4 mesh together, so that the ring frame 4 rotates. The ring frame 4 in the rotating state pushes the stones inside and accelerates the separation of sludge on the surface of the stones.

[0049] Working principle of the invention:

[0050] A feed inlet is provided at the front of the filter screen 1. The sludge to be treated is added into the filter screen 1 through the feed inlet. At the same time, the drive support wheel 101 is started. The outer wall of the drive support wheel 101 is in contact with the outer wall of the filter screen 1. The filter screen 1 is ring-shaped. The drive support wheel 101 drives the filter screen 1 to rotate synchronously, so that the sludge inside the filter screen 1 moves synchronously with the filter screen 1. Under the action of centrifugal force, the water inside the sludge leaves through the gaps of the filter screen 1 until the water content inside the sludge is reduced to a specified level.

[0051] The filter screen 1 has an annular sleeve 3 installed inside, and an air duct 301 is opened in the middle of the annular sleeve 3. An air pump 2 and an electric heating grid 201 are set directly above the air duct 301 and above the filter screen 1. The air pump 2 draws in the outside air and then heats it through the electric heating grid 201. The heated air flows through the gaps in the filter screen 1 and into the air duct 301. Due to the setting of the annular sleeve 3 inside the filter screen 1, the sludge enters the filter screen 1 through the feed inlet and directly enters the air duct 301. Under the action of gravity, it falls directly into the lower connection between the annular sleeve 3 and the filter screen 1. There is relative movement between the sludge and the filter screen 1 at the connection. Under the action of friction between the filter screen 1 and the sludge, the filter screen 1 drives the sludge that is in direct contact with the filter screen 1 to move synchronously. Under the constraint of centrifugal force and the annular sleeve 3, an annular sludge layer is formed between the filter screen 1 and the annular sleeve 3.

[0052] Due to the installation of the air pump 2 and the electric heating net 201 directly above the filter screen 1, there is a vertically downward hot airflow inside the holes directly above the filter screen 1. At this time, the sludge layer located above the inside of the filter screen 1 is separated from the filter screen 1 under the action of airflow and gravity. The hot airflow cleans the gaps directly above the filter screen 1 and dries the moisture inside the gaps. The hot airflow passing through the gaps heats and dries the fallen sludge layer again.

[0053] Due to the inclined arrangement of the filter screen 1, the sludge in the filter screen 1 is simultaneously affected by gravity, and under the action of gravity, the sludge in the filter screen 1 moves along the inclined surface of the filter screen 1 to the end where the discharge port is located, and the inlet and the outlet are oppositely arranged with the filter screen 1 as the center;

[0054] After the sludge passes through the inlet, it directly enters the inside of the annular frame 4. Due to the structural arrangement of the annular frame 4, the sludge can directly pass through the annular frame 4 after entering the annular frame 4, but the large-particle-size impurities in the sludge, including but not limited to stones, cannot pass through the gap formed by the metal strips and the metal ring;

[0055] The annular frame 4 is provided with a guide plate 401 inside, and a driving assembly 5 is installed at the front end of the annular frame 4, which drives the annular frame 4 to move, and the guide plate 401 inside the annular frame 4 rotates. Due to the spiral blades of the guide plate 401, the sludge and stones in the annular frame 4 are moved to the end of the discharge port during the rotation of the guide plate 401, and the sludge in the annular frame 4 is accelerated to leave at the same time;

[0056] The guide vane 102 is arranged to cooperate with the rotating filter screen 1. Since the guide vane 102 is installed inside the filter screen 1, and one end of the guide vane 102 is in close contact with the outer wall of the annular sleeve 3, the sludge moves with the filter screen 1 at the same time, and the sludge is in the gap between the filter screen 1 and the annular sleeve 3. Due to the difference in the movement state of the filter screen 1 and the annular sleeve 3, the sludge in the gap between the filter screen 1 and the annular sleeve 3 is simultaneously affected by the filter screen 1 and the annular sleeve 3. At this time, the guide vane 102 pushes the sludge in the gap between the filter screen 1 and the annular sleeve 3 to the end of the discharge port;

[0057] Due to the difference in the gap thickness between the two ends of the filter screen 1 and the annular sleeve 3, the thickness of the gap near the end of the discharge port is smaller than the thickness of the gap near the end of the inlet (hereinafter referred to as the extrusion cavity formed by the filter screen 1 and the annular sleeve 3). When the sludge moves in the extrusion cavity, the width of the extrusion cavity gradually decreases, and the extrusion strength of the sludge in the extrusion cavity increases, accelerating the separation of the water in the sludge;

[0058] The driving assembly 5 is provided with a driving motor inside, which drives the annular frame 4 to move through the connecting assembly 6. Since the output shaft of the driving motor and the main rod 601 are in sliding connection, and the output shaft and the main rod 601 are connected through the spring rod 603, the output shaft and the main rod 601 are eccentrically arranged, and the main rod 601 is in sliding connection with the annular frame 4 through the annular plate 602 and the annular frame 4;

[0059] During the movement of the driving motor through the output shaft and the connecting assembly 6, the annular frame 4 performs a circular motion with the output shaft as the center. Since the output shaft and the main rod 601 are connected through the spring rod 603, and under the action of gravity, when the annular frame 4 is located in the middle and below the center of the rotating rotation, the vertical component force of the natural extension of the spring rod 603 coincides with the direction of gravity, at this time the outer wall of the annular frame 4 is in contact with the inner wall of the air duct 301, since the inner wall of the air duct 301 is provided with a protrusion, the protrusion and the metal strip produce meshing effect, there is relative motion between the protrusion and the annular frame 4, when the protrusion and the annular frame 4 in motion state contact, the annular frame 4 is deflected with its own center as the center;

[0060] When the annular frame 4 is located above the middle of the center of the rotating rotation, the vertical component force of the natural extension of the spring rod 603 is opposite to the direction of gravity, at this time the spring rod 603 is compressed, thereby reducing the distance between the horizontal line where the center of the annular frame 4 is located and the horizontal line where the output shaft is located, realizing the deflection of the annular frame 4 with the output shaft as the center when the annular frame 4 is located in the middle and below the center of the rotating rotation, and the distance between the horizontal line where the center of the annular frame 4 is located and the horizontal line where the output shaft is located is close and far away from each other when the annular frame 4 is located above the middle of the center of the rotating rotation, the dividing plane between the annular frame 4 close to and far away from the output shaft is the vertical plane where the center of the output shaft is located;

[0061] The motion state of the annular frame 4 accelerates the separation of the sludge and the stones inside the annular frame 4, and when the annular frame 4 is located above the plane where the center of the output shaft is located, the stones above inside the annular frame 4 will fall under the action of gravity, so that the motion direction and speed of the stones change at any moment, so as to strip the sludge attached to the outer wall of the stones, and the stones stuck in the gap of the metal strip are cleaned through the contact between the protrusion and the annular frame 4, the protrusion cooperates with the driving assembly 5 and the connecting assembly 6 to realize the rotation of the annular frame 4, so as to move the stones inside the annular frame 4 to the discharge port, and the annular frame 4 is located in the air duct 301, the sludge is extruded into sludge blocks by the filter screen 1 and the annular sleeve 3, when the sludge blocks move to the inside above the filter screen 1, under the action of hot air flow and gravity, the sludge blocks and the filter screen 1 are separated and enter the air duct 301, the falling sludge blocks contact the annular frame 4, the structure of the annular frame 4 realizes the crushing of the sludge blocks after contacting the annular frame 4, the contact area between the crushed sludge and the hot air flow increases, and then the sludge passes through the gap of the annular frame 4 again and enters the extrusion cavity until leaving the filter screen 1;

[0062] The control valve is arranged inside the water outlet. After the sludge inside the extrusion cavity is extruded, the water inside the sludge enters the cavity 701 through the pores of the filter screen 1. The water outlet is arranged below the cavity 701, and the water level detector is arranged below the cavity 701. When the water level detector detects that the water level inside the cavity 701 rises to a specified position, the water level detector feeds back the monitoring structure to the main body 7. The main body 7 controls the control valve, and the control valve is opened. The water inside the cavity 701 leaves through the water outlet.

[0063] The air inlet end of the air pump 2 is connected with the cavity 701. Since the inner wall of one side of the main body 7 is attached to the inner wall of one side of the filter screen 1, the cavity 701 is arranged on the other side of the main body 7 and the filter screen 1. The sludge in the extrusion cavity on the side where the cavity 701 is arranged is in an upward state. Under the action of the air pump 2, the cavity 701 is in a negative pressure state. Under the action of the negative pressure, the water inside the sludge in the extrusion cavity is accelerated to separate.

[0064] It should be noted that the relational terms herein such as first and second and the like are used only to differentiate one entity or operation from another, and do not necessarily require or imply that these entities or operations exist in any actual relationship or order. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or apparatus.

[0065] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A sludge treatment device with a rapid dewatering function, comprising a filter screen (1), characterized in that: The filter screen (1) is annular, a rigid support is arranged inside the filter screen (1), one side of the filter screen (1) is provided with an inlet, the thickness of the filter screen (1) near the inlet is smaller than the thickness of the filter screen (1) far from the inlet, and the filter screen (1) is arranged in an inclined mode; An air pump (2) and an electric heating net (201) are arranged above the filter screen (1), the filter screen (1) is internally provided with an annular sleeve (3), the annular sleeve (3) is internally provided with a vertical air duct (301), and the air pump (2) is located directly above the air duct (301); Drive support wheels (101) are arranged at the lower sides of the filter screen (1); The air duct (301) is internally provided with an annular frame (4), the annular frame (4) is internally provided with a guide plate (401), the guide plate (401) is a spiral blade, the front end of the guide plate (401) is provided with a drive assembly (5), the drive assembly (5) is used for controlling the movement of the annular frame (4), and the annular frame (4) is connected with the inlet; The annular frame (4) is composed of a plurality of metal strips and a plurality of metal rings. After the sludge enters the annular frame (4) through the inlet, the sludge can directly pass through the annular frame (4) due to the structural arrangement of the annular frame (4), but the large particles in the sludge cannot pass through the gap formed by the metal strips and the metal rings.

2. The sludge treatment apparatus according to claim 1, characterized by: A plurality of guide vanes (102) are arranged inside the filter screen (1), the guide vanes (102) are spiral blades, and the inner diameter of the guide vanes (102) is equal to the outer diameter of the annular sleeve (3).

3. The sludge treatment apparatus with rapid dewatering function according to claim 1, characterized in that: The outer surface of the annular frame (4) is annular, the outer wall surface of the annular frame (4) is attached to the inner wall surface of the air duct (301), a plurality of protrusions are arranged on the inner wall of the air duct (301), and the outer wall size of the protrusions is matched with the gap of the metal strips.

4. The sludge treatment apparatus with rapid dewatering function according to claim 1, characterized in that: The drive assembly (5) comprises a drive motor, the output end of the drive motor is connected with the annular frame (4) in a eccentric connection mode, a connecting assembly (6) is arranged between the output end of the drive motor and the annular frame (4), the connecting assembly (6) is used for adjusting the distance between the center of the annular frame (4) and the center of the output end of the motor, and the center of the output end of the drive motor and the center of the filter screen (1) are located on the same horizontal straight line.

5. The sludge treatment apparatus with rapid dewatering function according to claim 4, characterized in that: The connecting assembly (6) comprises a main rod (601) and an annular plate (602), the annular plate (602) is arranged on the two sides of the main rod (601), the annular plate (602) is slidably connected with the annular frame (4), the main rod (601) is slidably connected with the output shaft of the drive motor, a spring rod (603) is arranged on one side of the main rod (601), and the two ends of the spring rod (603) are connected with the output shaft of the drive motor and the main rod (601) respectively.

6. The sludge treatment apparatus with rapid dewatering function according to claim 1, characterized in that: The outer side of the filter screen (1) is provided with a main body (7), the inside of the main body (7) has a cavity (701), one side inner wall of the main body (7) is attached to one side inner wall of the filter screen (1), the cavity (701) is arranged on the other side of the attachment of the main body (7) and the filter screen (1), and one side below the middle of the main body (7) is provided with a water outlet.

7. A sludge treatment plant with a rapid dewatering function according to claim 6, characterized in that: The air inlet end of the air pump (2) is communicated with the cavity (701), and the outer wall of the driving support wheel (101) is provided with a rubber layer.

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