Thin-layer hydraulic pressure filtration sludge deep dehydration equipment

Abstract

The utility model relates to thin-layer hydraulic pressure filtration sludge deep dehydration equipment which comprises a drying heater, one side of the drying heater is provided with an air inlet and is connected with a fan, and the top of the drying heater is provided with a plurality of heating rods; the connecting pipeline is connected with the drying heater and the fermentation box, a flowmeter, a stop valve and a ball valve are arranged on the pipeline, the flowmeter is arranged between the drying heater and the stop valve, the ball valve is arranged between the pressure gauge connecting pipe and the stop valve, and the connecting pipeline is connected with the drying heater through a flange; a purline is arranged on one side of the box cover, and a plurality of universal wheels are arranged at the bottom of the fermentation box; the air outlet is positioned at the bottom of the fermentation box; the pressure gauge connecting pipe is positioned on a connecting pipeline between the stop valve and the fermentation box and is connected with the pressure gauge. The equipment can accurately control heat transmission, utilizes the synergistic effect of the heating rod and the fan to heat sludge, and can effectively solve the problems that a traditional sludge dewatering method is difficult to greatly reduce the water content of the sludge, the dewatering efficiency is low, the energy consumption is relatively high, and the subsequent treatment difficulty of the treated sludge is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sludge treatment technical field, mainly applied to urban sewage treatment plant, industrial wastewater treatment station and all kinds of environmental protection engineering scene of producing a large amount of sludge. Involve the depth dehydration technology in sludge dewatering process, specifically a thin layer hydraulic filter press sludge depth dehydration equipment. The equipment aims at solving the thin layer sludge moisture content of the existing hydraulic filter press is high, the dehydration effect is limited, it is difficult to effectively reduce the problem of water content. BACKGROUND

[0002] With the acceleration of modern industrialization and urbanization, the sewage treatment capacity increases sharply, and the sludge output also shows a rapid growth trend. As a byproduct of sewage treatment, proper treatment of sludge has become a key problem in the environmental field. Traditional sludge dewatering technology mainly includes natural drying, mechanical dewatering and other methods. Natural drying depends on natural environmental conditions such as sunlight and air circulation. Although the cost is relatively low, it has the disadvantages of large land occupation, long treatment period and significant climate influence. In the face of increasingly scarce land resources, the application limitations of this method are becoming increasingly prominent.

[0003] Mechanical dewatering methods such as plate and frame filter press and centrifugal dewatering machine improve the dewatering efficiency to a certain extent, but it is still difficult to reduce the sludge moisture content to the ideal level. Generally speaking, after conventional mechanical dewatering, the sludge moisture content is still as high as 75% - 85%. Such high-moisture sludge not only has a large volume, but also brings great inconvenience to subsequent transportation, storage and disposal. In the disposal process of landfilling and incineration, a large amount of energy and resources are consumed, and secondary pollution problems may also occur. For example, high-moisture sludge is prone to cause the stability of the landfill site to decrease and seep a large amount of leachate containing harmful substances, which can cause serious pollution to the soil and groundwater. In the incineration process, a large amount of auxiliary fuel is needed to maintain the temperature conditions required for incineration, increasing the treatment cost and greenhouse gas emissions.

[0004] In addition, with the increasing strictness of environmental protection standards and the increasing demand for resource recycling, the existing sludge dewatering technology cannot meet the needs of sludge deep dewatering and resource utilization. Therefore, it is urgent to develop a new type of sludge dewatering equipment that is efficient, energy-saving and can realize sludge deep dewatering and subsequent resource utilization. The thin layer hydraulic filter press sludge deep dewatering equipment of the utility model is designed and developed based on such background, aiming to overcome the problems of high moisture content of thin layer sludge produced by existing hydraulic filter press, limited dewatering effect and difficulty in effectively reducing moisture content, and provide a more effective and feasible solution for sludge treatment, thereby promoting the development of the entire sludge treatment industry towards a more environmentally friendly, efficient and sustainable direction. SUMMARY

[0005] The utility model discloses a kind of thin layer hydraulic pressure filter press sludge depth dehydration equipment, to solve the thin layer sludge moisture content high, dehydration effect limited, difficult to effectively reduce the problem of water content generated by existing hydraulic pressure filter press.

[0006] To solve the above problems, the utility model provides a kind of thin layer hydraulic pressure filter press sludge depth dehydration equipment, comprising: drying heater, the side of drying heater is provided with air inlet;

[0007] Connecting pipeline, it connects drying heater and fermentation tank, flowmeter, stop valve and ball valve are equipped on connecting pipeline;

[0008] Fermentation tank, its top is equipped with tank cover, and the side of tank cover is equipped with purline;

[0009] Air outlet, located at the bottom of fermentation tank;

[0010] Pressure gauge connector, it is arranged on the connecting pipeline between stop valve and fermentation tank.

[0011] Further, the top of the drying heater is equipped with heating rod.

[0012] Further, the pressure gauge connector is connected with pressure gauge.

[0013] Further, the ball valve is arranged on the connecting pipeline between the pressure gauge connector and the stop valve.

[0014] Further, the connecting pipeline is connected with the drying heater through flange.

[0015] Further, the flowmeter is arranged on the connecting pipeline between the drying heater and the stop valve.

[0016] Further, the heating rod is provided with several.

[0017] Further, the bottom of the fermentation tank is provided with several universal wheels.

[0018] Further, the tank cover and the fermentation tank are sealingly connected.

[0019] Further, the air inlet of the drying heater is connected with fan.

[0020] The utility model has the following beneficial effects:

[0021] The multiple heating rods at the top of the dry heating device can efficiently provide heat for the equipment, ensure that the sludge is in a suitable temperature environment during the treatment process, accelerate the evaporation of water and the dry process of the sludge, and the flow meter, the stop valve and the ball valve equipped on the connecting pipeline can accurately adjust and control the flow and on-off of heat transmission, so that the heat supply is matched with the sludge treatment demand, energy waste is avoided, the energy utilization rate of the equipment is improved, the operation cost is reduced, and the problems of high water content of the thin layer sludge generated by the existing hydraulic filter press, limited dewatering effect and difficulty in effectively reducing the water content are effectively solved.

[0022] The box cover of the fermentation box is tightly and sealingly connected to the purlin arranged on one side, the box cover can effectively prevent heat loss and odor overflow, and maintain a stable treatment environment inside the equipment, and the purlin enhances the overall structural strength of the fermentation box to a certain extent, so that the fermentation box can better withstand the pressure and mechanical stress in the sludge treatment process and prolong the service life of the equipment.

[0023] The multiple universal wheels with locking devices installed at the bottom of the fermentation box improve the mobility and flexibility of the equipment, and the equipment can be conveniently and quickly moved to the required position during equipment installation, debugging and daily maintenance, and the working efficiency is improved.

[0024] The pressure gauge connected by the pressure gauge connecting pipe can monitor the internal pressure of the equipment in real time, provide accurate pressure data for the operator, so that the operator can timely find abnormalities and take corresponding measures, ensure the safe, stable and reliable operation of the equipment, effectively prevent safety accidents caused by excessively high or low pressure, ensure the smooth progress of the entire sludge deep dewatering treatment operation, meet the multiple requirements of high efficiency, safety, energy saving and environmental protection for modern sludge treatment operation, have wide application prospect and significant social benefits. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Fig. 1 It is a front view of the embodiment of the present application.

[0027] Fig. 2 The top view of the embodiment of the utility model;

[0028] Fig. 3 The overall view of the embodiment of the utility model;

[0029] Fig. 4 The partial view of the embodiment of the utility model.

[0030] Mark explanation:

[0031] 1-drying heater, 2-connection pipeline, 3-fermentation box, 4-box cover, 5-purlin, 6-air inlet, 7-heating rod, 8-flow meter, 9-stop valve, 10-ball valve, 11-pressure gauge connector, 12-flange, 13-air outlet. Specific implementation

[0032] In the following description, a large number of specific details are given in order to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0033] In order to thoroughly understand the utility model, detailed steps and detailed structures will be proposed in the following description in order to explain the technical scheme of the utility model. The preferred embodiment of the utility model is described in detail as follows, however, in addition to these detailed descriptions, the utility model can have other implementation manners.

[0034] As Figs. 1 to 4 shown in one embodiment of the thin-layer hydraulic pressure filtration sludge deep dewatering equipment of the utility model, the thin-layer hydraulic pressure filtration sludge deep dewatering equipment includes: drying heater 1, one side of drying heater 1 is provided with air inlet 6, the top of drying heater 1 is equipped with heating rod 7, air inlet 6 of drying heater 1 is connected with fan, and the fan can introduce external air into the inside of drying heater 1. The heating rods 7 on the top of drying heater 1 are uniformly distributed, can quickly heat the air entering therein, when the fan starts, the air is continuously sent into drying heater 1, the air temperature rapidly rises after the heating action of heating rod 7, forms high-temperature airflow, and the number of heating rods 7 can be reasonably configured according to the volume size of drying heater 1 and the required heating power, to ensure that sufficient heat can be generated to meet the demand of sludge drying.

[0035] A connecting pipeline 2 connects the drying heater 1 and the fermentation tank 3, and the connecting pipeline 2 is provided with a flow meter 8, a stop valve 9 and a ball valve 10; a pressure gauge connecting pipe 11 is arranged on the connecting pipeline 2 between the stop valve 9 and the fermentation tank 3, and the pressure gauge connecting pipe 11 is connected with a pressure gauge; the ball valve 10 is arranged on the connecting pipeline 2 between the pressure gauge connecting pipe 11 and the stop valve 9, the connecting pipeline 2 is connected with the drying heater 1 through a flange, and the flow meter 8 is arranged on the connecting pipeline 2 between the drying heater 1 and the stop valve 9. The connecting pipeline 2 plays an important role in conveying hot air and connecting different components in the whole equipment operation. The flow meter 8 arranged on the connecting pipeline 2 can accurately measure the flow of hot air in the pipeline, and through the monitoring of the flow data, the operator can know the conveying situation of the hot air in real time, so as to adjust the rotating speed of the fan according to the drying progress and state of the sludge, thereby controlling the flow of hot air and realizing precise drying process control; the stop valve 9 is used for controlling the on-off of hot air in the connecting pipeline 2, and plays a key role in the operation process of starting, stopping and fault maintenance of the equipment, and when it is needed to stop conveying hot air to the fermentation tank 3, the stop valve 9 can be closed to cut off the air flow channel; the ball valve 10 is arranged on the connecting pipeline 2 between the pressure gauge connecting pipe 11 and the stop valve 9, and the ball valve 10 has good sealing performance and adjusting performance, can assist in controlling the flow and pressure of hot air to a certain extent, and is convenient for operation in the pressure test and debugging process of the equipment.

[0036] The fermentation tank 3 is provided with a tank cover 4 at the top, and a purlin 5 is arranged on one side of the tank cover 4; an air outlet 13 is arranged at the bottom of the fermentation tank 3; a plurality of universal wheels are arranged at the bottom of the fermentation tank 3, and the tank cover 4 and the fermentation tank 3 are sealingly connected. The fermentation tank 3 is the core place for sludge deep dewatering and fermentation treatment, the tank cover 4 at the top of the fermentation tank 3 is sealingly connected with the fermentation tank 3, which effectively prevents the leakage of hot air in the fermentation tank 3, ensures that the hot air can fully contact with the sludge, and improves the heat utilization efficiency. The purlin 5 is arranged on one side of the tank cover 4, which plays a role in strengthening the structural strength of the tank cover 4, so that the tank cover 4 can bear a certain pressure and weight, and also provides a convenient support structure for the installation of other auxiliary equipment. The fermentation tank 3 is provided with a plurality of universal wheels at the bottom, so that the fermentation tank 3 has good mobility, which is convenient for adjusting the position of the fermentation tank 3 in different working scenes, for example, during the installation, maintenance and loading and unloading of the sludge, the fermentation tank 3 can be easily moved to the appropriate position, improving the flexibility and operability of the equipment. The air outlet 13 arranged at the bottom of the fermentation tank 3 is the outlet of the hot air after circulating in the fermentation tank 3, when the high-temperature hot air enters the fermentation tank 3, it fully contacts with the sludge in the tank, transfers heat to the sludge, and evaporates the water in the sludge, the evaporated water vapor flows with the hot air to the bottom of the fermentation tank 3, and finally is discharged from the air outlet 13, which is beneficial to form a circulating flow path of hot air in the fermentation tank 3, improve the utilization rate of hot air, and make the sludge evenly heated, so as to realize more efficient deep dewatering effect.

[0037] The utility model working process: open the tank cover 4, the sludge that has undergone preliminary treatment is evenly laid in the fermentation tank 3 according to the process requirement of thin layer hydraulic pressure filter, and the laying thickness should be strictly controlled within the design range, to ensure that the sludge can fully contact with the hot air, and realize efficient dewatering. Close the tank cover 4, ensure that the sealing is tight, start the fan, make the air enter the drying heater 1 through the air inlet 6 stably, and open the heating rod 7 at the same time, according to the initial moisture content of the sludge, the treatment capacity and the target moisture content and other key parameters, set the heating power of the heating rod 7. The flow of the heat medium is monitored in real time through the flow meter 8, and the flow and on-off of the heat medium are accurately adjusted by using the stop valve 9 and the ball valve 10 in combination with the dewatering condition of the sludge, so that the heat generated by the drying heater 1 can be stably transmitted into the fermentation tank 3 according to the demand, and the sludge is uniformly heated and dried.

[0038] In the sludge heating drying process, the air is heated in the drying heater 1, enters the fermentation tank 3 through the connecting pipeline 2, fully contacts with the sludge, and promotes the water in the sludge to evaporate rapidly to form water vapor. The water vapor and the waste gas are discharged from the air outlet 13 at the bottom of the fermentation tank 3 under the action of the pressure difference. The operator needs to closely observe the value change of the pressure gauge, monitors the internal pressure of the equipment in real time, and if the pressure appears abnormal fluctuation, such as too high or too low, the equipment operation should be stopped immediately, the equipment operation condition is checked, including checking whether the connecting pipeline 2 is blocked, whether the valve works normally, whether the fan runs stably and the like, and corresponding adjustment measures are taken, such as adjusting the opening degree of the stop valve 9 or the ball valve 10, so as to ensure that the equipment runs in the safe and stable pressure range.

[0039] The above describes the preferred embodiments of the present application. It should be understood that the present application is not limited to the above specific embodiments, and is not limited to the thin-layer hydraulic filter-pressing sludge deep dewatering device. The equipment and structures not described in detail should be understood as being implemented in the ordinary way in the art; any person skilled in the art can make many possible changes and modifications to the technical solutions of the present application or modify equivalent embodiments without departing from the scope of the technical solutions of the present application, which does not affect the essential content of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, which does not depart from the content of the technical solutions of the present application, still belongs to the protection scope of the technical solutions of the present application.

Claims

1. A thin-layer hydraulic filter press for deep dewatering of sludge, characterized in that, include: A drying heater (1) is provided with an air inlet (6) on one side. A connecting pipe (2) is provided, which connects the drying heater (1) and the fermentation box (3). A flow meter (8), a shut-off valve (9) and a ball valve (10) are provided on the connecting pipe (2). Fermentation box (3), with a box cover (4) on top and a purlin (5) on one side of the box cover (4); The air outlet (13) is located at the bottom of the fermentation box (3); The pressure gauge connector (11) is installed on the connecting pipe (2) between the shut-off valve (9) and the fermentation tank (3).

2. The thin-layer hydraulic filter press sludge deep dewatering equipment according to claim 1, characterized in that: The top of the drying heater (1) is provided with a heating rod (7).

3. The thin-layer hydraulic filter press sludge deep dewatering equipment according to claim 1, characterized in that: The pressure gauge connector (11) is connected to a pressure gauge.

4. The thin-layer hydraulic filter press sludge deep dewatering equipment according to claim 1, characterized in that: The ball valve (10) is installed on the connecting pipe (2) between the pressure gauge connector (11) and the shut-off valve (9).

5. The thin-layer hydraulic filter press sludge deep dewatering equipment according to claim 1, characterized in that: The connecting pipe (2) is connected to the drying heater (1) via a flange.

6. The thin-layer hydraulic filter press sludge deep dewatering equipment according to claim 1, characterized in that: The flow meter (8) is installed on the connecting pipe (2) between the drying heater (1) and the shut-off valve (9).

7. The thin-layer hydraulic filter press sludge deep dewatering equipment according to claim 2, characterized in that: The heating rod (7) is provided in several parts.

8. The thin-layer hydraulic filter press for deep dewatering of sludge according to claim 1, characterized in that: The fermentation box (3) is equipped with several casters at the bottom.

9. The thin-layer hydraulic filter press sludge deep dewatering equipment according to claim 1, characterized in that: The lid (4) and the fermentation box (3) are sealed together.

10. The thin-layer hydraulic filter press sludge deep dewatering equipment according to claim 2, characterized in that: The air inlet (6) of the drying heater (1) is connected to a fan.

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