CN210030387U

CN210030387U - Device for removing water in sludge containing heavy metals

Info

Publication number: CN210030387U
Application number: CN201920760307.XU
Authority: CN
Inventors: 郑志永; 颜威; 张福鑫; 李峰
Original assignee: Zhejiang Qingfengyuan Environmental Protection Technology Co Ltd
Current assignee: Zhejiang Qingfengyuan Environmental Protection Technology Co Ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-02-07
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a get rid of device that contains moisture content among heavy metal sludge, the device includes: the device comprises a feeding mechanism, a drying cylinder and a crushing mechanism, wherein the feeding mechanism is positioned at the upstream of the drying cylinder, and the crushing mechanism is positioned at the downstream of the drying cylinder; the drying cylinder comprises an inner cylinder, an outer cylinder and a hot gas source, wherein the outer cylinder is sleeved outside the inner cylinder, the inner cylinder can rotate around the axis of the inner cylinder, one end of the drying cylinder is a feeding hole communicated with the inner cylinder and the outer cylinder, the other end of the drying cylinder is a discharging hole communicated with the inner cylinder and the outer cylinder, and the discharging hole is communicated with the crushing mechanism; an accommodating layer is arranged in the shell of the outer barrel, the hot gas source is positioned in the accommodating layer, and the hot gas source flows through the inner barrel; water leakage holes are densely distributed on the peripheral side of the inner cylinder; a water outlet is arranged on the outer barrel. The device is easy to cause uneven water removal, and the water removal needs long treatment time and has low efficiency.

Description

Device for removing water in sludge containing heavy metals

Technical Field

The utility model relates to a sludge treatment device, in particular to a device for removing moisture in sludge containing heavy metals.

Background

The traditional method for treating sludge, particularly sludge with high heavy metal content, is a common burying method, the method occupies a large area, the generated filtrate has great harm, in order to reduce environmental pollution and realize resource recycling, the sludge is treated by the conventional method for preparing biochar by pyrolysis and solidification, the water content of the sludge is generally not lower than 70 percent and even up to 80-90 percent because the sludge has large water content, and the water content in the sludge must be reduced to a corresponding standard before pyrolysis, so that a device for removing water in the sludge is necessary. The existing sludge drying device usually adopts the modes of filtering and mechanical extrusion to remove water in sludge, the device is easy to cause uneven water removal, the treatment time for removing the water is long, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the embodiment of the utility model provides a get rid of device that contains moisture content in heavy metal sludge.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the embodiment of the utility model provides a get rid of device that contains moisture content among heavy metal sludge, the device includes: the device comprises a feeding mechanism, a drying cylinder and a crushing mechanism, wherein the feeding mechanism is positioned at the upstream of the drying cylinder, and the crushing mechanism is positioned at the downstream of the drying cylinder; the drying cylinder comprises an inner cylinder, an outer cylinder and a hot gas source, wherein the outer cylinder is sleeved outside the inner cylinder, the inner cylinder can rotate around the axis of the inner cylinder, one end of the drying cylinder is a feeding hole communicated with the inner cylinder and the outer cylinder, the other end of the drying cylinder is a discharging hole communicated with the inner cylinder and the outer cylinder, and the discharging hole is communicated with the crushing mechanism; an accommodating layer is arranged in the shell of the outer barrel, the hot gas source is positioned in the accommodating layer, and the hot gas source flows through the inner barrel; water leakage holes are densely distributed on the peripheral side of the inner cylinder; a water outlet is arranged on the outer barrel.

Further, the apparatus further comprises: the device comprises an odor collecting cylinder and a hot gas generator for generating a hot gas source, wherein an odor outlet is also formed in the other end of the drying cylinder, one end of the odor collecting cylinder is connected with the odor hole, and the other end of the odor collecting cylinder is connected with the hot gas generator to serve as fuel of the hot gas generator; the hot gas producer comprises a first gas outlet pipe, a second gas outlet pipe and a gas inlet pipe, wherein the first gas outlet pipe is communicated with the containing layer, the second gas outlet pipe is communicated with the inner cylinder, and the gas inlet pipe is communicated with the containing layer.

Further, the drying cylinder is obliquely arranged, and one end of the feeding hole of the drying cylinder is higher than one end of the discharging hole.

Further, the apparatus further comprises: and the water collecting tank is communicated with the inside of the outer barrel through the water outlet.

Further, the apparatus further comprises: and one end of the primary drying cylinder is connected with the feeding mechanism, and the other end of the primary drying cylinder is respectively communicated with the drying cylinder and the water collecting tank.

Further, the apparatus further comprises: a sludge storage tank located downstream of the crushing mechanism.

Further, the inner cylinder can eccentrically rotate about its axis.

The embodiment of the utility model provides a get rid of device that contains moisture content among heavy metal sludge, feeding mechanism are used for carrying mud, and the drying cylinder is used for deep drying mud, makes water content accord with follow-up pyrolysis demand in the mud, and mud after the drying cylinder drying gets into broken mechanism breakage to get into next pyrolysis link. The hot gas source in the accommodating layer can indirectly heat the sludge in the inner barrel, the hot gas source flowing through the inner barrel is used for taking away moisture in the sludge, and the rotating inner barrel can further improve the drying quality and the drying efficiency of the sludge.

Drawings

FIG. 1 is a schematic structural diagram of a device for removing water from sludge containing heavy metals in the embodiment of the present invention.

Reference numerals: a feeding mechanism 10; a drying cylinder 20; an outer cylinder 21; the accommodating layer 211; an inner cylinder 22; a feed port 23; a discharge port 24; a water outlet 25; a primary drying cylinder 30; a hot gas generating furnace 40; a first outlet pipe 41; a second outlet tube 42; an intake pipe 43; a water collection tank 50; an odor collection cartridge 60; a crushing mechanism 70; a sludge storage tank 80.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, belong to the scope of protection of the invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in fig. 1.

The embodiment of the utility model provides a get rid of device that contains moisture content among heavy metal sludge, the device includes: the drying device comprises a feeding mechanism 10, a drying cylinder 20 and a crushing mechanism 70, wherein the feeding mechanism 10 is positioned at the upstream of the drying cylinder 20, and the crushing mechanism 70 is positioned at the downstream of the drying cylinder 20; the drying cylinder 20 comprises an inner cylinder 22, an outer cylinder 21 sleeved outside the inner cylinder 22 and a hot gas source, the inner cylinder 22 can rotate around the axis of the inner cylinder, one end of the drying cylinder 20 is provided with a feed inlet 23 communicated with the inner cylinder 22 and the outer cylinder 21, the other end of the drying cylinder is provided with a discharge outlet 24 communicated with the inner cylinder 22 and the outer cylinder 21, and the discharge outlet 24 is communicated with the crushing mechanism 70; an accommodating layer 211 is arranged in the shell of the outer cylinder 21, a hot gas source is positioned in the accommodating layer 211, and the hot gas source flows through the inner cylinder 22; water leakage holes are densely distributed on the peripheral side of the inner cylinder 22; the outer cylinder 21 is provided with a water outlet 25.

As shown in fig. 1, the feeding mechanism 10 is used for conveying sludge, the sludge enters the drying cylinder 20 through the feeding port 23, the drying cylinder 20 is used for deeply drying the sludge, so that the water content in the sludge meets the requirement of subsequent pyrolysis, and the sludge dried by the drying cylinder 20 enters the crushing mechanism 70 through the discharging port 24 to be crushed so as to enter the next pyrolysis link. The hot gas source in the accommodating layer 211 can indirectly heat the sludge in the inner cylinder 22, the hot gas source flowing through the inner cylinder 22 is used for taking away moisture in the sludge, and the rotating inner cylinder 22 can keep the sludge in the inner cylinder to be dynamically turned over, so that the drying quality and the drying efficiency of the sludge are further improved. The water vapor in the sludge in the inner cylinder 22 leaks from the water leakage holes, when the sludge enters the drying cylinder 20 for the first time, if the sludge has excessive moisture, the water outlet 25 can be opened, so that the moisture flows out from the water outlet 25, and when no liquid drops exist in the water outlet 25, the water outlet 25 can be closed. The sludge is dried in the drying cylinder 20, and because the feeding port 23, the discharging port 24, the water outlet 25 and the like which are connected with the drying cylinder 20 are all connected with the pipeline, the odor cannot be diffused everywhere in the sludge drying process, and the odor pollution is reduced.

To further enhance the drying effect and to further avoid sludge from adhering to the inner wall of the inner cylinder 22, the inner cylinder 22 is able to rotate eccentrically about its axis.

In some embodiments of the present invention, the apparatus further comprises: the device comprises an odor collecting cylinder 60 and a hot gas generating furnace 40 for generating a hot gas source, wherein the other end of the drying cylinder 20 is also provided with an odor outlet, one end of the odor collecting cylinder 60 is connected with an odor hole, and the other end of the odor collecting cylinder is connected with the hot gas generating furnace 40 to be used as fuel of the hot gas generating furnace 40; the hot gas generating furnace 40 comprises a first outlet pipe 41, a second outlet pipe 42 and an inlet pipe 43, wherein the first outlet pipe 41 is communicated with the accommodating layer 211, the second outlet pipe 42 is communicated with the inner cylinder 22, and the inlet pipe 43 is communicated with the accommodating layer 211. As shown in fig. 1, the hot gas generating furnace 40 provides a hot gas source for heating the accommodating layer 211 through the first outlet pipe 41, and also provides a hot gas source for drying sludge in the inner cylinder 22 through the second outlet pipe 42. The hot air source can further take away the water vapor generated by the sludge, and then the water vapor enters the odor collecting cylinder 60 from the odor outlet. The hot gas source circulates in the receiving layer 211 through the first outlet duct 41 and the inlet duct 43, thereby continuously heating the drying cylinder 20. The odor gas in the odor gas collection canister 60 can be used as fuel to allow the hot gas generator 40 to generate a temperature regulated source of hot gas, which can be air. The cyclic utilization of odor is realized, the odor pollution is reduced, and the energy and the cost can be saved.

In some embodiments of the present invention, the drying cylinder 20 is disposed obliquely, and one end of the feeding hole 23 of the drying cylinder 20 is higher than one end of the discharging hole 24. The obliquely arranged drying cylinder 20 is convenient for sludge discharge and water outflow.

In some embodiments of the present invention, the apparatus further comprises: a water collecting tank 50, wherein the water collecting tank 50 is communicated with the inside of the outer cylinder 21 through a water outlet 25. The water collecting tank 50 is used to collect water discharged from the drying cylinder 20.

In some embodiments of the present invention, the apparatus further comprises: and one end of the primary drying cylinder 30 is connected with the feeding mechanism 10, and the other end of the primary drying cylinder 30 is respectively communicated with the drying cylinder 20 and the water collecting tank 50. As shown in fig. 1, the primary drying cylinder 30 is disposed upstream of the drying cylinder 20 for primarily drying the sludge to primarily reduce moisture in the sludge, and the primary drying cylinder 30 may be dried by filtration or standing.

In some embodiments of the present invention, the apparatus further comprises: a sludge storage tank 80, the sludge storage tank 80 being located downstream of the crushing mechanism 70. The sludge storage tank is used for storing the treated sludge for later use.

Other structures and operations according to embodiments of the present invention will be understood and readily implemented by those skilled in the art, and therefore will not be described in detail.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. An apparatus for removing water from sludge containing heavy metals, said apparatus comprising: the device comprises a feeding mechanism, a drying cylinder and a crushing mechanism, wherein the feeding mechanism is positioned at the upstream of the drying cylinder, and the crushing mechanism is positioned at the downstream of the drying cylinder; the drying cylinder comprises an inner cylinder, an outer cylinder and a hot gas source, wherein the outer cylinder is sleeved outside the inner cylinder, the inner cylinder can rotate around the axis of the inner cylinder, one end of the drying cylinder is a feeding hole communicated with the inner cylinder and the outer cylinder, the other end of the drying cylinder is a discharging hole communicated with the inner cylinder and the outer cylinder, and the discharging hole is communicated with the crushing mechanism; an accommodating layer is arranged in the shell of the outer barrel, the hot gas source is positioned in the accommodating layer, and the hot gas source flows through the inner barrel; water leakage holes are densely distributed on the peripheral side of the inner cylinder; a water outlet is arranged on the outer barrel.

2. The apparatus for removing water from sludge containing heavy metals according to claim 1, further comprising: the device comprises an odor collecting cylinder and a hot gas generator for generating a hot gas source, wherein an odor outlet is also formed in the other end of the drying cylinder, one end of the odor collecting cylinder is connected with the odor outlet, and the other end of the odor collecting cylinder is connected with the hot gas generator to serve as fuel of the hot gas generator; the hot gas producer comprises a first gas outlet pipe, a second gas outlet pipe and a gas inlet pipe, wherein the first gas outlet pipe is communicated with the containing layer, the second gas outlet pipe is communicated with the inner cylinder, and the gas inlet pipe is communicated with the containing layer.

3. The device for removing water in sludge containing heavy metals according to claim 2, wherein the drying cylinder is placed obliquely, and one end of the feeding hole of the drying cylinder is higher than one end of the discharging hole.

4. The apparatus for removing water from sludge containing heavy metals according to claim 1, further comprising: and the water collecting tank is communicated with the inside of the outer barrel through the water outlet.

5. The apparatus for removing water from sludge containing heavy metals according to claim 4, further comprising: and one end of the primary drying cylinder is connected with the feeding mechanism, and the other end of the primary drying cylinder is respectively communicated with the drying cylinder and the water collecting tank.

6. The apparatus for removing water from sludge containing heavy metals according to claim 1, further comprising: a sludge storage tank located downstream of the crushing mechanism.

7. The apparatus for removing water from sludge containing heavy metals as claimed in claim 1, wherein said inner drum is capable of eccentric rotation about its axis.