CN217479298U

CN217479298U - Automatic dosing system of sludge dewatering powder

Info

Publication number: CN217479298U
Application number: CN202220912864.0U
Authority: CN
Inventors: 彭杰; 夏良; 刘晓峰; 王勇; 张�浩; 杨海波
Original assignee: Hunan Junxin Environmental Co ltd
Current assignee: Hunan Junxin Environmental Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-09-23
Anticipated expiration: 2032-04-15

Abstract

The utility model discloses an automatic adding system of sludge dewatering powder, which comprises a powder storage subsystem, a conveying subsystem, a metering subsystem, a mixing subsystem and an automatic control system; the powder storage subsystem comprises a powder bin; the conveying subsystem comprises a feeder and a delivery pump, and the feeder is respectively connected with the powder bin and the delivery pump; the metering subsystem comprises a metering hopper, and a delivery pump is connected with the metering hopper; the mixing subsystem comprises a mixing tank and a stirrer, and the metering hopper is communicated with a powder feeding hole on the mixing tank; the mixing tank is also provided with a sludge feeding hole, and the stirrer is used for stirring sludge and powder in the mixing tank; and the automatic control system controls the subsystems and regulates and controls the operation parameters of the sludge dewatering powder adding system. The utility model has the advantages of easy operation, control are accurate, the operation is stable, have realized simultaneously that the powder is automatic to be carried and the measurement, can be according to the real-time accurate, stable throwing of mud flow with the powder, have ensured the sludge dewatering quality, the cost is reduced.

Description

Automatic dosing system of sludge dewatering powder

Technical Field

The utility model belongs to the technical field of sludge dewatering handles, specifically be an automatic dosing system of sludge dewatering powder when adopting powder and sludge to mix and take care of.

Background

Sludge is a biomass fragment produced in the sewage treatment process, has the characteristics of high water content, large volume, easy rheology and the like, and at present, part of sludge dehydration processes (such as thermokalite hydrolysis process, lime and PAM process and the like) need to use powder for conditioning, and the control of the adding amount of the powder in the conditioning process directly influences the quality of dehydrated sludge and the sludge dehydration cost. Sludge dewatering is one of the important links of sludge treatment, sludge conditioning is an important part of sludge dewatering, and chemical agent conditioning can effectively reduce the moisture content in sludge and is convenient for subsequent transportation and disposal.

The existing sludge treatment adopts the processes of thermal hydrolysis, high-temperature anaerobic digestion, dehydration and drying, wherein the sludge dehydration adopts the processes of medicament conditioning and diaphragm plate frame dehydration. The diaphragm plate-and-frame filter pressing dehydration has the characteristics of low water content of mud cakes, large treatment capacity, wide application range and the like, and the mud cakes dehydrated by the plate-and-frame filter pressing can meet the treatment requirement of sludge blending combustion after being conditioned by medicaments.

The existing sludge treatment process has the following defects:

(1) in the sludge dewatering conditioning process, powder needs to be added for dewatering conditioning, the dry powder cannot be accurately and stably added in unit time along with the conditions of equipment abrasion, dry powder hardening and the like, and when the adding amount is large, the waste of the medicament is easily caused, the dewatering cost is increased, and when the adding amount is small, the quality of sludge dewatered is greatly influenced.

(2) The traditional conveying mode is adopted, the adding amount of the dry powder cannot be measured, manual regular calibration is needed, the manual labor amount is increased, and human errors are easily introduced.

(3) When the dry powder is not hermetically added, the influence of dust flying from the dry powder on the field environment is worse.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide an automatic dosing system of sludge dewatering powder compact structure, easy operation, control are accurate and move stably.

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

an automatic dosing system of sludge dewatering powder, includes: the powder storage subsystem, the conveying subsystem, the metering subsystem, the mixing subsystem and the automatic control system are arranged in the powder storage subsystem;

the powder storage subsystem comprises a powder bin for storing powder; the conveying subsystem comprises a feeder and a delivery pump, the feed end of the feeder is connected with the discharge end of the powder bin, and the discharge end of the feeder is connected with the feed end of the delivery pump; the metering subsystem comprises a metering hopper for metering the powder adding amount, and the discharge end of the delivery pump is connected with the feed end of the metering hopper; the mixing subsystem comprises a mixing tank and a stirrer, and the discharge end of the metering hopper is communicated with a powder feed inlet on the mixing tank and is used for feeding powder into the mixing tank; the mixing tank is also provided with a sludge feeding hole for feeding sludge into the mixing tank, and the stirrer is used for uniformly mixing the sludge and the powder in the mixing tank;

the automatic control system controls the powder storage subsystem, the conveying subsystem, the metering subsystem and the mixing subsystem, and controls and adjusts set operation parameters of the automatic sludge dewatering powder adding system.

As a further improvement, the powder storage subsystem further comprises a dust remover, and the dust remover is arranged at the top of the powder bin.

As a further improvement, the powder storage subsystem further comprises a vibrator, which is arranged at the bottom of the powder bin.

As a further improvement of the present invention, the gauging subsystem further comprises a first level indicator and a second level indicator; the first material level meter is arranged at the upper part of the measuring hopper and used for monitoring the high material level in the measuring hopper and transmitting a high material level signal to the automatic control system; the second material level meter is arranged at the bottom of the weighing hopper and used for monitoring the low material level in the weighing hopper and transmitting a low material level signal to the automatic control system.

As a further improvement, the mounting position of the first charge level indicator on the upper part of the measuring hopper is adjustable.

As a further improvement, a first discharge valve is arranged between the discharge end of the feeder and the feed end of the material conveying pump.

As a further improvement of the utility model, the first discharge valve and the delivery pump are arranged in an interlocking fit.

As a further improvement of the utility model, the weighing hopper is provided with at least one.

As a further improvement, a second feeding valve is arranged between the discharge end of the material conveying pump and the feeding end of the measuring hopper.

As a further improvement, a second discharge valve is arranged between the discharge end of the weighing hopper and the powder feed inlet of the mixing tank.

As a further improvement of the utility model, a sludge inlet valve is arranged on the sludge feed inlet of the mixing tank.

As a further improvement, the material conveying pump is a diaphragm pump, a vacuum material suction pump or a material sealing pump.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses automatic dosing system of sludge dewatering powder, store the subsystem to the powder through setting up automatic control system, carry the subsystem, measurement subsystem and mixed subsystem carry out automated control, the automatic transport and the accurate measurement of powder have been realized, carry and throw to throw with throwing the powder and carried out fine control, and accomplished powder and mud automatic mixing even, it is accurate to have reached the sludge conditioning medicament, the stable mesh of throwing, still have the characteristics that the dust spilled over with the feeding process of inclosed transport simultaneously, the influence of the fluctuation of the powder input volume to dehydration play argillaceous has been reduced, avoided the powder input volume too much and the sludge dewatering cost that causes risees.

2. The automatic sludge dewatering powder adding system reduces the dust raising degree in the powder bin and also ensures the safety of powder storage by arranging the dust remover at the top of the powder bin; through set up the vibrator in powder storehouse bottom, avoided the powder to agglomerate or bridge in the powder storehouse inboard, improved the efficiency of the powder ejection of compact.

3. The utility model discloses automatic dosing system of sludge dewatering powder, through setting up first charge level indicator and second charge level indicator on the weighing hopper, carry out real-time supervision to high material level and low material level in the weighing hopper to convey the material level signal to the automatic control system in real time, so that the automatic control system adjusts the quantity that the powder was carried and was thrown in real time, realized the accurate control to automatic dosing system of sludge dewatering powder, through automatic shunt control, greatly reduced artifical intensity of labour; furthermore, the mounting position of the first level indicator on the metering hopper can be flexibly adjusted according to the feeding ratio of the sludge to the powder, so that the feeding of the powder with different proportions is realized; through setting up a plurality of weighing hoppers to switch between a plurality of weighing hoppers and throw the material, realized that the powder is thrown in succession and thrown, show the operating efficiency who has improved the automatic dosing system of sludge dewatering powder.

Drawings

FIG. 1 is a schematic diagram of the structure principle of the automatic feeding system of sludge dewatering powder of the utility model.

Illustration of the drawings: 1. a powder bin; 2. a dust remover; 3. a vibrator; 4. a first feed valve; 5. a feeder; 6. a first discharge valve; 7. a delivery pump; 8. a second feed valve; 9. a measuring hopper; 10. a first level indicator; 11. a second level gauge; 12. a second discharge valve; 13. a mixing tank; 14. a stirrer; 15. a mud inlet valve.

Detailed Description

The invention is further described in the following description with reference to the drawings and the specific preferred embodiments, but the scope of protection of the invention is not limited thereby.

Examples

As shown in figure 1, the utility model discloses an automatic dosing system of sludge dewatering powder, include: the powder storage subsystem, the conveying subsystem, the metering subsystem, the mixing subsystem and the automatic control system.

The powder storage subsystem comprises a powder bin 1 for storing powder; the conveying subsystem comprises a feeder 5 and a delivery pump 7, the feed end of the feeder 5 is connected with the discharge end of the powder bin 1, and the discharge end of the feeder 5 is connected with the feed end of the delivery pump 7; the metering subsystem comprises a metering hopper 9 for metering the powder feeding amount, and the discharge end of the material conveying pump 7 is connected with the feed end of the metering hopper 9; the mixing subsystem comprises a mixing tank 13 and a stirrer 14, and the discharge end of the metering hopper 9 is communicated with a powder feeding hole in the mixing tank 13 and is used for feeding powder into the mixing tank 13; the mixing tank 13 is further provided with a sludge feeding port for feeding sludge into the mixing tank 13, and the stirrer 14 is used for uniformly mixing the sludge and the powder in the mixing tank 13. In this embodiment, the mixing tank 13 has a certain buffering capacity, and can prevent the ratio fluctuation caused by intermittent powder feeding.

The automatic control system controls the powder storage subsystem, the conveying subsystem, the metering subsystem and the mixing subsystem, and controls and adjusts the set operation parameters of the automatic sludge dewatering powder adding system. It can be understood that in this embodiment, the automatic Control system may specifically adopt a plc (programmable Logic controller) Control system or a dcs (distributed Control system) Control system.

In the embodiment, the powder storage subsystem is arranged through the automatic control system, the conveying subsystem, the metering subsystem and the mixing subsystem are automatically controlled, automatic conveying and accurate metering of powder are achieved, fine control is carried out on conveying and adding of the powder, automatic mixing of the powder and sludge is achieved, the purpose that a sludge conditioning agent is accurate and stable to add is achieved, meanwhile, the automatic sludge conditioning agent has the advantages of being capable of achieving closed conveying and free of dust overflow in the feeding process, the influence of powder adding amount fluctuation on sludge quality of dewatering sludge is reduced, and the problem that the sludge dewatering cost is increased due to the fact that the powder adding amount is too large is avoided.

In the present embodiment, as shown in fig. 1, the dust storage subsystem further includes a dust collector 2 and a vibrator 3, the dust collector 2 is disposed at the top of the dust bin 1, and the vibrator 3 is disposed at the bottom of the outer side of the dust bin 1. Through set up dust remover 2 at 1 tops in powder storehouse, reduced the raise dust degree in powder storehouse 1 inside, also ensured the security of powder storage. Through set up vibrator 3 in 1 bottom outside in powder storehouse, utilize vibrator 3's vibration effect, avoided the powder to agglomerate or bridge in the powder storehouse inboard, improved the efficiency of the powder ejection of compact.

As shown in FIG. 1, in this embodiment, the gauging subsystem further comprises a first level gauge 10 and a second level gauge 11. The first level indicator 10 is arranged at the upper part of the weighing hopper 9 and is used for monitoring the high material level in the weighing hopper 9 and transmitting a high material level signal to the automatic control system. The second level indicator 11 is arranged at the bottom of the weighing hopper 9 and is used for monitoring the low level in the weighing hopper 9 and transmitting a low level signal to the automatic control system. It can be understood that in the embodiment, an overtime alarm device can be arranged when the weighing hopper 9 feeds so as to judge the fault of the conveying subsystem; for example, after 5min, the first fill level indicator 10 has not yet detected a high fill level, and the alarm device issues an alarm. Further, the mounting position of the first level gauge 10 on the upper portion of the weighing hopper 9 is adjustable. The position of the full material level of the measuring hopper 9 or the frequency of the material conveying pump 7 can be adjusted according to the required powder amount so as to ensure that the powder is added according to the preset proportion.

In this embodiment, a weighing hopper 9 is provided. It will be appreciated that in other embodiments, two weighing hoppers 9 or more than two weighing hoppers 9 may be provided to enable switching the dosing between a plurality of weighing hoppers 9. The emptying frequency of the metering hopper 9 in unit time is set according to the sludge flow and the adding proportion so as to ensure that the powder is added according to the preset proportion. When the measuring hopper 9 is full, the powder adding amount is converted according to the volume and the density.

In the embodiment, the first material level indicator 10 and the second material level indicator 11 are arranged on the metering hopper 9, so that the high material level and the low material level in the metering hopper 9 are monitored in real time, and material level signals are transmitted to the automatic control system in real time, so that the automatic control system can adjust the powder conveying and adding quantity in real time, the accurate control of the automatic adding system of the sludge dewatering powder is realized, and the manual labor intensity is greatly reduced through automatic shunt control; furthermore, the mounting position of the first level indicator 10 on the metering hopper 9 can be flexibly adjusted according to the feeding ratio of the sludge to the powder, so that the feeding of the powder with different proportions is realized; through setting up a plurality of weighing hoppers 9 to switch between a plurality of weighing hoppers 9 and throw the material, realized that the powder is thrown in succession and thrown, show the operating efficiency who has improved the automatic dosing system of sludge dewatering powder.

As shown in fig. 1, in this embodiment, a first feeding valve 4 is disposed on the feeding pipeline of the powder bin 1, and the feeding pipeline is controlled to be opened or closed by the first feeding valve 4. A first discharge valve 6 is arranged between the discharge end of the feeder 5 and the feed end of the feed delivery pump 7. First bleeder valve 6 sets up to interlocking cooperation with defeated material pump 7, just can start defeated material pump 7 when first bleeder valve 6 is in the open mode to avoid the pipeline to suppress the pressure. The first feeding valve 4 and the first discharging valve 6 can adopt electromagnetic valves and are opened or closed under the control of a PLC control system.

As shown in fig. 1, in this embodiment, a second feeding valve 8 is arranged between the discharging end of the material conveying pump 7 and the feeding end of the measuring hopper 9, and the feeding of the measuring hopper 9 is controlled by the second feeding valve 8. The second feeding valve 8 can be an electromagnetic valve and is opened or closed under the control of a PLC control system.

In the present embodiment, as shown in fig. 1, a second discharge valve 12 is disposed between the discharge end of the weighing hopper 9 and the powder feeding port of the mixing tank 13, and the second discharge valve 12 is equivalent to an emptying valve of the weighing hopper 9. The second discharge valve 12 and the full material level of the measuring hopper 9 are interlocked, namely, the second discharge valve 12 and the first material level meter 10 are interlocked to control, so that the quantitative feeding of the powder is ensured every time. The second discharging valve 12 can be an electromagnetic valve and is opened or closed under the control of a PLC control system.

As shown in fig. 1, in this embodiment, a sludge inlet valve 15 is provided on the sludge inlet of the mixing tank 13. The mud inlet valve 15 can adopt an electromagnetic valve and is opened or closed under the control of a PLC control system so as to realize automatic mud inlet.

In this embodiment, the material conveying pump 7 is a diaphragm pump, a vacuum material suction pump or a material sealing pump, and the feeder 5 can be a star-shaped feeder.

The working principle is as follows:

after the PLC control system receives the mud inflow flow signal, the second discharge valve 12 is controlled to be closed, the second feed valve 8 and the first discharge valve 6 are opened, the feeder 5 is started, the material conveying pump 7 is started, and the weighing hopper 9 starts feeding. When the PLC receives a full material signal transmitted by the first material level indicator 10, the operation of the material conveying pump 7 and the feeder 5 is stopped, the first discharging valve 6 and the second feeding valve 8 are closed, the second discharging valve 12 is opened, and the lime powder is added into the mixing tank 13. When the PLC control system receives the empty material signal transmitted by the second material level indicator 11, the second discharge valve 12 is controlled to be closed, and the feeding step of the weighing hopper 9 is repeated. Such as: the mud inlet flow of the mixing tank 13 is 20m ³ When the addition proportion of the powder is 3 percent in the case of per hour, namely the addition amount of the powder is 600kg/h, the feeding time of a metering hopper 9 is set to be 5min and the adding time is set to be 5min in a PLC control system, the adding mode is intermittent adding, and the powder density is set. The PLC control system automatically feeds the first material according to the volume of the measuring hopper 9The position of the level meter 10 is adjusted to 100kg to be full, and then automatic powder conveying, metering and feeding are started.

This implementation sets up batch hopper 9 feed supplement time, throws material time, operation mode, throws throwing proportion and powder density through mud flow on-line monitoring, has realized the automatic transport of powder, measurement and has thrown the throwing and throw and put, has guaranteed that the powder is thrown and has thrown that the proportion is accurate, stable, through automatic monitoring and control, greatly reduced the manual strength.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make numerous changes and modifications to the disclosed embodiments, or modify equivalent embodiments, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides an automatic dosing system of sludge dewatering powder which characterized in that includes: the powder storage subsystem, the conveying subsystem, the metering subsystem, the mixing subsystem and the automatic control system are arranged in the powder storage subsystem;

the powder storage subsystem comprises a powder bin (1) for storing powder; the conveying subsystem comprises a feeder (5) and a material conveying pump (7), the feed end of the feeder (5) is connected with the discharge end of the powder bin (1), and the discharge end of the feeder (5) is connected with the feed end of the material conveying pump (7); the metering subsystem comprises a metering hopper (9) for metering the powder adding amount, and the discharge end of the material conveying pump (7) is connected with the feed end of the metering hopper (9); the mixing subsystem comprises a mixing tank (13) and a stirrer (14), and the discharge end of the metering hopper (9) is communicated with a powder feed inlet on the mixing tank (13) and is used for feeding powder into the mixing tank (13); the mixing tank (13) is also provided with a sludge feeding hole for feeding sludge into the mixing tank (13), and the stirrer (14) is used for uniformly mixing the sludge and the powder in the mixing tank (13);

2. The automatic dosing system of sludge dewatering powder as claimed in claim 1, wherein the powder storage subsystem further comprises a dust remover (2), and the dust remover (2) is arranged at the top of the powder bin (1).

3. The automatic dosing system of sludge dewatering powder as claimed in claim 1, wherein the powder storage subsystem further comprises a vibrator (3), and the vibrator (3) is arranged at the bottom of the powder bin (1).

4. The automatic dosing system of sludge dewatering powder as claimed in claim 1, wherein the metering subsystem further comprises a first level gauge (10) and a second level gauge (11); the first material level meter (10) is arranged at the upper part of the weighing hopper (9) and is used for monitoring the high material level in the weighing hopper (9) and transmitting a high material level signal to the automatic control system; the second material level meter (11) is arranged at the bottom of the weighing hopper (9) and used for monitoring the low material level in the weighing hopper (9) and transmitting a low material level signal to the automatic control system.

5. The automatic dosing system of sludge dewatering powder as claimed in claim 4, characterized in that the mounting position of the first level indicator (10) on the upper part of the weighing hopper (9) is adjustable.

6. The automatic feeding system of sludge dewatering powder as claimed in any one of claims 1 to 5, characterized in that a first discharge valve (6) is arranged between the discharge end of the feeder (5) and the feed end of the feed delivery pump (7).

7. The automatic dosing system of sludge dewatering powder as claimed in any one of claims 1 to 5, characterized in that at least one metering hopper (9) is provided.

8. The automatic dosing system for sludge dewatering powder as claimed in any one of claims 1 to 5, characterized in that a second inlet valve (8) is provided between the outlet end of the delivery pump (7) and the inlet end of the measuring hopper (9).

9. The automatic dosing system of sludge dewatering powder as claimed in any one of claims 1 to 5, characterized in that a second discharge valve (12) is arranged between the discharge end of the metering hopper (9) and the powder feed inlet of the mixing tank (13).

10. The automatic dosing system of sludge dewatering powder as claimed in any one of claims 1 to 5, characterized in that a sludge inlet valve (15) is arranged on the sludge inlet of the mixing tank (13).