CN220223755U - Sand washing slurry water treatment system - Google Patents

Abstract

The utility model belongs to the technical field of sewage treatment, and relates to a sand washing slurry water treatment system, which comprises the following components: the buffer container I is arranged at a slurry water outlet of the sand washing equipment; the pumping device I is communicated with the cache container I; the top feed inlet of the deep cone concentration tank is communicated with the outlet of the pumping device I; the dosing device is communicated with a feed inlet of the deep cone concentration tank; the inlet of the pumping device II is communicated with the sewage outlet of the deep cone concentration tank and comprises a low-pressure pump and a high-pressure pump which are connected in parallel; the feed inlet of the filter pressing device is respectively communicated with the low-pressure pump and the high-pressure pump through buffer pipelines; the control device comprises a controller, a concentration detector arranged in the deep cone concentration tank and a pressure sensor arranged on the buffer pipeline, wherein the concentration detector and the pressure sensor are both in communication connection with the controller, and the controller is respectively and electrically connected with the pumping device I, the dosing device, the low-pressure pump, the high-pressure pump and the filter pressing device. The utility model has low energy consumption and good flocculation sedimentation effect, and the water content of the mud cake obtained after treatment is low.

Description

Sand washing slurry water treatment system

Technical Field

The utility model belongs to the technical field of sewage treatment, relates to a sand washing slurry water treatment technology, and in particular relates to a sand washing slurry water treatment system.

Background

Along with the rapid development of the economy in China, the building industry is continuously rising, the demand for sand and stone is increasingly increased, and the discharge of sand washing slurry water generated in the sand washing process becomes an important problem. If the sand washing slurry water is improperly treated, serious consequences of geological change and urban pollution can be directly caused.

The sand washing slurry water mainly comes from sand washing slurry water generated by sand washing machine in sand yard, and the slurry water mainly contains a large amount of suspended matters of building materials such as silt, cement and the like, and the water quality can be cleaned only by removing the suspended matters. The sand washing slurry water produced in the sand washing production process is large in water quantity, turbid in whole and large in viscosity, the conventional treatment method is to directly pump the settled slurry into a filter press to filter and press by using a low-pressure pump or a high-pressure pump after flocculation and settlement, so that a mud cake and clear water are obtained, the mud cake can be used as basic backfill, and the separated clear water can reach the national environmental protection specified emission standard and can be recycled. However, the conventional treatment method has the following problems: on the one hand, the settled mud water is directly pumped into the filter press by adopting a low-pressure pump or a high-pressure pump, when the mud water is pumped into the filter press by adopting the low-pressure pump, the water content in mud cakes pressed by the filter press is high, and when the mud water is pumped into the filter press by adopting the high-pressure pump, the water content in the mud cakes pressed by the filter press is low, but the energy consumption is high; on the other hand, the medicine adding during flocculation sedimentation is controlled by manual experience, the medicine adding amount is inaccurate, and the flocculation sedimentation effect is not ideal.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a sand washing slurry water treatment system with low energy consumption and low water content of mud cakes, which has good flocculation sedimentation effect and low water content of the mud cakes obtained after treatment.

In order to achieve the above object, the present utility model provides a sand washing slurry water treatment system, comprising:

the buffer container I is arranged at a slurry outlet of the sand washing equipment to buffer slurry generated by the sand washing equipment;

the pumping device I is communicated with the cache container I;

the top feed inlet of the deep cone concentration tank is communicated with the outlet of the pumping device I through a feed pipeline;

the dosing device is communicated with a feed inlet of the deep cone concentration tank;

the inlet of the pumping device II is communicated with the sewage outlet of the deep cone concentration tank, and the pumping device II comprises a low-pressure pump and a high-pressure pump which are connected in parallel;

the feed inlet of the filter pressing device is respectively communicated with the low-pressure pump and the high-pressure pump through buffer pipelines;

the control device comprises a controller, a concentration detector arranged in the deep cone concentration tank and a pressure sensor arranged in the filter pressing device, wherein the concentration detector and the pressure sensor are both in communication connection with the controller, and the controller is respectively and electrically connected with the pumping device I, the dosing device, the low-pressure pump, the high-pressure pump and the filter pressing device.

Preferably, a first liquid level sensor is arranged in the buffer container I and is in communication connection with the controller, so that the liquid level information of the muddy water in the buffer container I detected by the first liquid level sensor is transmitted to the controller.

Preferably, the dosing device comprises a dosing container for containing the medicament, a dosing pump communicated with the dosing container, a dosing pipeline connected with the dosing pump and a first flowmeter arranged in the dosing pipeline, wherein the dosing pipeline is directly communicated with the feed inlet of the deep cone concentration tank, and the dosing pump and the first flowmeter are electrically connected with the controller.

Further, still include recycling device, recycling device includes:

the first end part of the first gravity flow pipeline is communicated with the overflow port of the deep cone concentration tank, and a first pneumatic valve part electrically connected with the controller is arranged on the first gravity flow pipeline;

the first end part of the second gravity flow pipeline is connected with the upper part of the first gravity flow pipeline, the second end part of the second gravity flow pipeline is used for being connected with sand washing equipment so as to convey clear water overflowed from the deep cone concentration tank to the sand washing equipment for washing sand, and a second pneumatic valve part electrically connected with the controller is arranged on the second gravity flow pipeline;

the recycling water pool is communicated with the second end part of the first gravity flow pipeline;

the recycling sedimentation tank is adjacent to the recycling water tank, an overflow port at the upper part of the recycling sedimentation tank is communicated with the recycling water tank, and a sewage outlet of the filter pressing device is communicated with the recycling sedimentation tank through a pipeline;

and the pumping device III is connected between the feeding pipeline and the sewage port at the lower part of the recycling sedimentation tank, and the pumping device III is electrically connected with the controller.

Further, the device also comprises a backflushing pipeline, one end of the backflushing pipeline is communicated with a discharge port of the pumping device III, the other end of the backflushing pipeline is communicated with a sewage outlet of the deep cone concentration tank, and the backflushing pipeline, the pumping device III and the recycling sedimentation tank form a backflushing device.

Further, the device further comprises a buffer container II, wherein the buffer container II is connected between the drain outlet of the deep cone concentration tank and the pumping device II, so as to buffer slurry water generated by concentration flocculation of the deep cone concentration tank, a third pneumatic valve element is electrically connected with the controller on a connecting pipeline between the buffer container II and the drain outlet of the deep cone concentration tank, a fourth pneumatic valve element electrically connected with the controller is arranged on a connecting pipeline between the pumping device II and the drain outlet of the deep cone concentration tank, and a fifth pneumatic valve element electrically connected with the controller is arranged on a connecting pipeline between the pumping device II and the buffer container II.

Preferably, a second liquid level sensor and a stirring piece are arranged in the cache container II, and the stirring piece is in shaft connection with a driving piece arranged outside the cache container II; the second liquid level sensor is in communication connection with the controller so as to transmit the liquid level information of the muddy water in the buffer container II detected by the second liquid level sensor to the controller, and the driving piece is electrically connected with the controller.

Further, still include evacuation pipeline and return line, evacuation pipeline connects between buffer container I and feed line, be equipped with on the evacuation pipeline with the first solenoid valve of controller electricity connection, the return line is connected between buffer container II and buffer line, be equipped with on the return line with the second solenoid valve of controller electricity connection.

Preferably, the pumping device I comprises a first slurry pump and a second slurry pump which are connected in parallel, and the first slurry pump and the second slurry pump are electrically connected with the controller; the feed inlets of the first slurry pump and the second slurry pump are respectively communicated with the buffer container I, the discharge outlet of the first slurry pump is communicated with the feed pipeline through a first pipeline, a sixth pneumatic valve element electrically connected with the controller is arranged on the first pipeline, the discharge outlet of the second slurry pump is communicated with the feed pipeline through a second pipeline, and a seventh pneumatic valve element electrically connected with the controller is arranged on the second pipeline.

Further, the device comprises a water collecting device, the water collecting device comprises a water collecting well, a third slurry pump and a third liquid level sensor, the third slurry pump and the third liquid level sensor are arranged in the water collecting well, the third slurry pump is communicated with a feed inlet of the deep cone concentration tank through a sewage pipeline, and an eighth pneumatic valve element electrically connected with the controller is arranged on the sewage pipeline.

Further, still include blowback air supply unit, blowback air supply unit includes:

the air compressor is electrically connected with the controller;

the air inlet of the back-blowing air storage tank is communicated with the air compressor, and the air outlet of the back-blowing air storage tank is communicated with the filter pressing device so as to back-blow the filter pressing device;

the air inlet of the pneumatic air storage tank is communicated with the air compressor, the air outlet of the pneumatic air storage tank is communicated with the air inlet of the cold dryer, and the air outlet of the cold dryer is respectively connected with the first pneumatic valve element to the eighth pneumatic valve element to supply air for the first pneumatic valve element to the eighth pneumatic valve element.

Compared with the prior art, the utility model has the advantages and positive effects that:

(1) In the process of concentrating and flocculating the muddy water, the controller automatically controls the dosing device to dose the drugs while conveying the muddy water, so that the contact area of the drugs and the muddy water is larger, the reaction of the drugs is more sufficient, the efficiency of flocculating and settling is accelerated, the dosing amount is accurate, the flocculating and settling effect is good, and the dosage of the drugs is saved. And the concentrated flocculated slurry water is conveyed by adopting a high-low pressure switching mode during the pressure filtration, the energy consumption is low in the pressure filtration process, and the water content in the pressure-filtered mud cake is low.

(2) The utility model is provided with the control device, the controller is combined with the liquid level sensor and the concentration detector to control the water pump of the pumping device to work in a grading way, the whole slurry water treatment process is finished by the automatic control of the controller, and the utility model has the advantages of high integral automation degree, simple operation, safety, reliability and stable performance.

(3) The utility model has compact layout, reasonable structure, small occupied area, simple installation, low investment cost, high overall energy utilization rate, low energy consumption and low operation cost.

(4) The utility model adopts the mode of synchronous dosing and repeated concentration flocculation to treat the muddy water while conveying the muddy water, and has higher sedimentation efficiency and better resource recovery effect.

(5) The utility model is provided with the recycling device, the clear water after concentration and flocculation and the clear water produced after pressure filtration are recycled to the recycling water tank through the clear water after precipitation of the recycling precipitation tank, and can be recycled to the sand washing equipment, thereby achieving the effect of recycling zero emission and reducing the consumption of redundant water resources.

(6) The utility model is also provided with a backflushing device, when the drain outlet of the deep cone concentration tank is blocked, the centrifugal pump in the backflushing device is controlled to work by the controller, sewage in the recycling sedimentation tank is pumped into the deep cone concentration tank from the drain outlet at the bottom of the deep cone concentration tank through the backflushing pipeline, and the blocked drain outlet is backflushed and dredged.

(7) The utility model is also provided with an emptying pipeline and a return pipeline, and the residual muddy water in the feeding pipeline and the buffer pipeline flows into the buffer container I and the buffer container II respectively through the emptying pipeline and the return pipeline so as to reduce the damage to the pump, prolong the service life of the pump and prevent the muddy water from accumulating to block the feeding pipeline and the buffer pipeline.

Drawings

FIG. 1 is a schematic diagram of a sand washing slurry water treatment system according to an embodiment of the present utility model;

fig. 2 is a control schematic block diagram of a sand washing slurry water treatment system according to an embodiment of the utility model.

In the figure, 01, sand washing equipment, 1, a buffer container I, 101, a first liquid level sensor, 201, a first slurry pump, 202, a second slurry pump, 3, a deep cone concentration tank, 4, a feeding pipeline, 401, a second flowmeter, 501, a low-pressure pump, 502, a high-pressure pump, 6, a filter pressing device, 601, a buffer pipeline, 6011, a pressure gauge, 6012, a third flowmeter, 701, a controller, 702, a concentration detector, 703, a pressure sensor, 801, a first pneumatic valve, 802, a second pneumatic valve, 803, a third pneumatic valve, 804, a fourth pneumatic valve, 805, a fifth pneumatic valve, 806, a sixth pneumatic valve, 807, a seventh pneumatic valve, 808, an eighth pneumatic valve, 809, a ninth pneumatic valve, 901, dosing container, 902, dosing pump, 903, dosing pipeline, 904, first flowmeter, 10, first gravity flow pipeline, 11, second gravity flow pipeline, 12, reuse water tank, 13, reuse sedimentation tank, 1401, siphon tank, 1402, centrifugal pump, 15, backflushing pipeline, 16, buffer container ii, 1601, second liquid level sensor, 1602, stirring piece, 1603, driving piece, 17, emptying pipeline, 1701, first solenoid valve, 18, return pipeline, 1801, second solenoid valve, 1901, sump, 1902, third slurry pump, 1903, third liquid level sensor, 20, sewer pipeline, 2101, air compressor, 2102, blowback air tank, 2103, pneumatic air tank, 2104, cold dryer, 22, and clean water pump.

Detailed Description

The present utility model will be specifically described below by way of exemplary embodiments. It is to be understood that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", etc. are positional relationships based on the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 and 2, the present embodiment provides a sand washing slurry water treatment system, including:

the buffer container I1 is arranged at a slurry outlet of the sand washing equipment 01 so as to buffer slurry generated by the sand washing equipment 01;

the pumping device I is communicated with the cache container I1;

the top feed inlet of the deep cone concentration tank 3 is communicated with the outlet of the pumping device I through a feed pipeline 4;

the dosing device is communicated with a feed inlet of the deep cone concentration tank 3;

the inlet of the pumping device II is communicated with a drain outlet at the bottom of the deep cone concentration tank 3, and the pumping device II comprises a low-pressure pump 501 and a high-pressure pump 502 which are connected in parallel;

the filter pressing device 6, the feed inlet of which is respectively communicated with the low pressure pump 501 and the high pressure pump 502 through a buffer pipeline 601;

the control device comprises a controller 701, a concentration detector 702 arranged in the deep cone concentration tank and a pressure sensor 703 arranged on the buffer pipeline 601, wherein the concentration detector 702 and the pressure sensor 703 are in communication connection with the controller 701, and the controller 701 is respectively and electrically connected with the pumping device I, the dosing device, the low-pressure pump 501, the high-pressure pump 502 and the filter pressing device 6.

According to the sand washing slurry water treatment system, when filter pressing is performed, the controller is used for controlling the low-pressure pump to work, the flocculated and precipitated slurry water is input into the filter pressing device at low pressure, the pressure sensor is used for monitoring the pressure of the slurry water in the filter pressing device and transmitting the pressure to the controller, and when the pressure reaches a set value, the controller is used for controlling the low-pressure pump to stop working and controlling the high-pressure pump to work, and the flocculated and precipitated slurry water is input into the filter pressing device at high pressure. The energy consumption is reduced and the water content in the mud cake is reduced by a high-low pressure switching mode. Meanwhile, the controller controls the dosing device to automatically dose drugs, the dosing amount is accurate, and the flocculation sedimentation effect is improved.

Specifically, with continued reference to fig. 2, a first liquid level sensor 101 is disposed in the buffer container i 1, where the first liquid level sensor 101 is located at an upper portion of the buffer container i 1, and the first liquid level sensor 101 is connected to the controller 701 in a communication manner, so as to transmit the liquid level information of the muddy water in the buffer container i 1 detected by the first liquid level sensor 101 to the controller 701. The method comprises the steps of monitoring the muddy water in the buffer storage container I through the first liquid level sensor, transmitting the monitored signal to the controller, and controlling the pumping device I and the dosing device to work simultaneously when the muddy water reaches a set height by the controller to convey the muddy water and the medicament to the deep cone concentration tank.

Specifically, with continued reference to fig. 1 and 2, in a specific embodiment, the pumping device i includes a first slurry pump 201 and a second slurry pump 202 connected in parallel, where each of the first slurry pump 201 and the second slurry pump 202 is electrically connected to the controller 701; the feed inlets of the first slurry pump 201 and the second slurry pump 202 are respectively communicated with the bottom of the buffer container i 1, the discharge outlet of the first slurry pump 201 is communicated with the feed pipeline 4 through a first pipeline, a sixth pneumatic valve element 806 electrically connected with the controller 701 is arranged on the first pipeline, the discharge outlet of the second slurry pump 202 is communicated with the feed pipeline 4 through a second pipeline, and a seventh pneumatic valve element 807 electrically connected with the controller 701 is arranged on the second pipeline. In this embodiment, pumping device I is equipped with two way pumping pipeline, and through two way pumping pipeline work in turn of controller control, can reduce the sediment stuff pump loss, increase the life of sediment stuff pump.

Specifically, in another embodiment, the pumping device I comprises a slurry pump with a feed inlet communicated with the buffer container I1, a discharge outlet of the slurry pump is communicated with a feed pipeline, and the slurry pump is electrically connected with the controller. In this embodiment, since only one slurry pump is continuously operated, the service life of the slurry pump is relatively short compared to two pump lines.

Specifically, with continued reference to fig. 1 and 2, the dosing device includes a dosing container 901 for containing a medicament, a dosing pump 902 in communication with the dosing container 901, a dosing pipe 903 connected to the dosing pump 902, and a first flow meter 904 provided in the dosing pipe 903, the dosing pipe 903 being in direct communication with the feed inlet of the deep cone concentration tank 3, both the dosing pump 902 and the first flow meter 904 being electrically connected to the controller 701. The controller controls the dosing pump to pump the liquid medicine in the dosing container to the feed inlet of the deep cone concentration tank through the dosing pipeline according to the sewage flow detected by the first flowmeter, the dosing amount is accurate, and the flocculation sedimentation effect can be improved. It is to be noted that, because the first flowmeter is arranged on the dosing pipeline, the second flowmeter is arranged on the feeding pipeline, and in the dosing and slurry water conveying process, the medicament flow is monitored in real time through the first flowmeter, and the slurry water flow is monitored in real time through the second flowmeter.

In a specific embodiment, the sand washing slurry water treatment system further comprises a recycling device, wherein the recycling device comprises:

a first gravity flow pipeline 10, a first end of which is communicated with an overflow port of the deep cone concentration tank 3, and a first pneumatic valve 801 electrically connected with the controller 701 is arranged on the first gravity flow pipeline 10;

a second gravity flow pipe 11, a first end of which is connected with the upper part of the first gravity flow pipe 10, a second end of which is used for being connected with a sand washing device 01 so as to convey clear water overflowed from the deep cone concentration tank 3 to the sand washing device 01 for washing sand, and a second pneumatic valve element 802 electrically connected with the controller is arranged on the second gravity flow pipe 11;

the reuse water tank 12 is communicated with the second end part of the first gravity flow pipeline;

the recycling sedimentation tank 13 is adjacent to the recycling water tank, an overflow port at the upper part of the recycling sedimentation tank is communicated with the recycling water tank, and a sewage outlet of the filter pressing device is communicated with the recycling sedimentation tank 13 through a pipeline;

and the pumping device III is connected between the feeding pipeline 4 and the sewage port at the lower part of the recycling sedimentation tank 13, and the pumping device III is electrically connected with the controller 701.

On one hand, the concentrated flocculated upper clear water in the deep cone concentration tank can enter a recycling water tank through a first gravity self-flow pipeline for recycling, and then the clear water in the recycling water tank is conveyed to sand washing equipment for recycling; on the other hand, the sand can be directly conveyed to sand washing equipment for use through a second gravity self-flowing pipeline. The clarified water separated after filter pressing by the filter pressing device flows into a recycling sedimentation tank through a pipeline, after sedimentation, the upper layer of clarified water overflows into a recycling water tank to be supplied to sand washing equipment for use, and the lower layer of sediment is input into a deep cone concentration tank through a pumping device III for secondary concentration flocculation sedimentation treatment. The clear water is recycled to sand washing equipment through the recycling device, the effect of recycling zero emission is achieved, the redundant water resource is reduced to be small and high, the resource utilization rate is improved, meanwhile, the sediment produced by the clear water sediment after filter pressing is subjected to secondary concentration flocculation precipitation treatment, the sedimentation efficiency is high, and the effect of recycling the resource is better.

Specifically, with continued reference to fig. 1 and 2, pumping device iii comprises:

a siphon tank 1401, the feed inlet of which is communicated with the sewage port at the lower part of the recycling sedimentation tank through a pipeline;

the centrifugal pump 1402, its feed inlet is through pipeline and siphon jar's discharge gate intercommunication, and its discharge gate is through pipeline and feed pipeline intercommunication, the centrifugal pump with the controller electricity is connected.

With continued reference to fig. 1, in a specific embodiment, the sand washing slurry water treatment system further includes a backflushing pipeline, one end of the backflushing pipeline is communicated with the discharge port of the pumping device iii, the other end of the backflushing pipeline is communicated with the sewage outlet of the deep cone concentration tank, and the backflushing pipeline, the pumping device iii and the recycling sedimentation tank form a backflushing device. Specifically, one end of the backflushing pipeline 15 is communicated with a discharge port of the centrifugal pump 1401, and the other end is communicated with a drain outlet of the deep cone concentration tank 3. When the sewage outlet of the deep cone concentration tank is blocked, at the moment, the sewage concentration in the deep cone concentration tank monitored by the concentration detector is higher than a threshold value set in the controller, the controller controls the centrifugal pump to work, sewage in the recycling sedimentation tank is pumped into the deep cone concentration tank from the sewage outlet at the bottom of the deep cone concentration tank through the backflushing pipeline, and the blocked sewage outlet is backflushed and dredged.

With continued reference to fig. 1 and 2, in a specific embodiment, the sand washing slurry water treatment system further includes a buffer container ii 16, where the buffer container ii 16 is connected between the drain outlet of the deep cone concentration tank 3 and the pumping device ii, so as to buffer slurry water generated by concentration flocculation of the deep cone concentration tank, a third pneumatic valve 803 electrically connected to the controller 701 is disposed on a connection pipe between the buffer container ii 16 and the drain outlet of the deep cone concentration tank 3, a fourth pneumatic valve 804 electrically connected to the controller is disposed on a connection pipe between the pumping device ii and the drain outlet of the deep cone concentration tank 3, and a fifth pneumatic valve 805 electrically connected to the controller is disposed on a connection pipe between the pumping device ii and the buffer container ii. When the concentrated and flocculated muddy water is more and the filter pressing device cannot timely carry out filter pressing treatment, the concentrated and flocculated muddy water is temporarily stored through the buffer container II.

Specifically, with continued reference to fig. 1 and 2, the buffer container ii 16 is provided with a second liquid level sensor 1601 and a stirring member 1602, and the stirring member 1602 is axially connected to a driving member 1603 provided outside the buffer container ii 16; the second liquid level sensor 1601 is in communication connection with the controller 701, so as to transmit the information of the liquid level of the slurry water in the buffer container ii 16 detected by the second liquid level sensor 1601 to the controller 701, and the driving unit 1603 is electrically connected to the controller 701. In this embodiment, the driving member is a motor. The stirring piece is driven to rotate by the driving piece so as to stir the flocculated and precipitated muddy water buffered in the buffer container II, so that the concentration of the muddy water is maintained in a state most suitable for pipeline pumping.

With continued reference to fig. 1 and 2, in one embodiment, the sand washing slurry water treatment system further includes an evacuation pipe 17 and a return pipe 18, where the evacuation pipe 17 is connected between the buffer container i 1 and the feed pipe 4, a first electromagnetic valve 1701 electrically connected to the controller 701 is disposed on the evacuation pipe 17, the return pipe 18 is connected between the buffer container ii 16 and the buffer pipe 601, and a second electromagnetic valve 1801 electrically connected to the controller 701 is disposed on the return pipe 18. The emptying pipeline is used for refluxing residual slurry water in the feeding pipeline to the buffer storage container I so as to protect a slurry pump of the pumping device I, reduce damage to the slurry pump, prolong the service life of the slurry pump and prevent the slurry water accumulation pipeline from being blocked. The residual muddy water in the buffer pipeline flows into the buffer container II through the return pipeline so as to protect the low-pressure pump and the high-pressure pump of the pumping device II, reduce the damage to the low-pressure pump and the high-pressure pump, prolong the service lives of the low-pressure pump and the high-pressure pump and prevent the muddy water accumulation pipeline from being blocked. After the pumping device I pumps the muddy water in the buffer container I into the deep cone concentration tank, the controller controls the pumping device I to stop working and simultaneously controls the first electromagnetic valve to open so as to drain the pipeline passage, so that the muddy water can flow back. After the pumping device II pumps the slurry water in the buffer container II into the filter pressing device, the controller controls the pumping device II to stop working and simultaneously controls the second electromagnetic valve to open so as to enable the return pipeline to pass through, and thus the slurry water can flow back conveniently.

With continued reference to fig. 1 and 2, in a specific embodiment, the sand washing slurry water treatment system further includes a water collecting device, where the water collecting device includes a water collecting well 1901, a third slurry pump 1902 with a feed inlet communicated with the water collecting well 1901, and a third liquid level sensor 1903 disposed in the water collecting well 1901, a discharge outlet of the third slurry pump 1902 is communicated with a feed inlet of the deep cone concentration tank 3 through a sewage pipeline 20, and an eighth pneumatic valve 808 electrically connected with the controller 701 is disposed on the sewage pipeline 20. Scattered sewage generated during maintenance of the whole system and rainwater generated by weather reasons flow automatically into a water collecting well through a small-inclination-angle drainage ditch, and are pumped to a deep cone concentration tank by a third slurry pump to be concentrated, flocculated and settled.

With continued reference to fig. 1, in a specific embodiment, the sand washing slurry water treatment system further includes a back-blowing air supply device 21, where the back-blowing air supply device 21 includes:

the air compressor 2101 is electrically connected with the controller 701;

a blowback air storage tank 2102, the air inlet of which is communicated with the air compressor 2101, and the air outlet of which is communicated with the filter pressing device 6 so as to carry out blowback on the filter pressing device 6;

the air inlet of the air storage tank 2103 is communicated with the air compressor 2101, the air outlet of the air storage tank is communicated with the air inlet of the air dryer 2104, the air outlet of the air dryer 2104 is respectively connected with the first pneumatic valve 801 to the eighth pneumatic valve 808 to supply air for the first pneumatic valve 801 to the eighth pneumatic valve 808, and the air dryer 2104 is electrically connected with the controller 701.

After the filter pressing device separates out mud cakes and clarified water, when the pressure in the filter pressing device is restored to an initial state, the controller controls the back-blowing air supply device to start to supply air and back-blow according to signals monitored by the pressure sensor, and mud water remained in the filter pressing device is cleaned, so that blockage caused by accumulation drying is prevented.

Specifically, in a specific embodiment, the sand washing slurry water treatment system further comprises a pumping device IV, the pumping device IV is connected between the water outlet of the recycling water tank and the sand washing equipment, the recycling water tank conveys clear water in the recycling water tank to the sand washing equipment for recycling through the pumping device IV, and the pumping device IV is electrically connected with the controller. In this embodiment, with continued reference to fig. 1 and 2, the pumping device iv includes a clean water pump 22 that is connected to the water outlet of the reuse water tank 12 through a third pipeline and a fourth pipeline that connects the clean water pump 22 to the sand washing device 01, where the clean water pump 22 is electrically connected to the controller 701, and a ninth pneumatic valve 809 that is electrically connected to the controller 701 is disposed on the third pipeline, and the pneumatic valve 809 is connected to the air outlet of the air dryer 2104, and is supplied with air by the air dryer. Clear water in the reuse water tank is conveyed to sand washing equipment for reuse by a clear water pump through a clear water pipeline, so that the water resource utilization rate is improved.

Specifically, with continued reference to fig. 1 and 2, in a specific embodiment, the buffer pipeline 601 is further provided with a pressure gauge 6011 and a third flowmeter 6012, and the third flowmeter 6012 is electrically connected to the controller. The pressure in the filter pressing device is displayed in real time through the pressure gauge, and the flow rate of mud water pumped into the filter pressing device is monitored in real time through the third flowmeter.

Specifically, in this embodiment, the filter press device adopts a commercially available chamber filter press. The low-pressure pump comprises two first low-pressure pumps and two second low-pressure pumps which are connected in parallel, and the two low-pressure pumps work in turn, so that pump damage can be reduced, and the service life of the pump can be prolonged.

The sand washing slurry water treatment system can be directly applied to an operation site, and can be directly recycled after sewage treatment.

The working flow of the sand washing slurry water treatment system is as follows:

the first liquid level sensor in the buffer container I measures the liquid level height in real time, when the liquid level height reaches a set position, a signal is sent to the controller, and the controller controls a dosing pump of the dosing device and a slurry pump of the pumping device I to work simultaneously, so that the slurry water and a medicament are conveyed to the deep cone concentration tank; when the concentration reaches the set concentration, the controller controls the dosing pump and the slurry pump of the pumping device I to stop working, after the slurry water fully reacts with the medicament to be concentrated and flocculated rapidly, the supernatant enters a recycling water tank through a first gravity flow pipeline to be stored, the supernatant is conveyed to sand washing equipment for use by the clean water pump, or the supernatant is directly supplied to the sand washing equipment for use through a second gravity flow pipeline, the lower slurry enters a buffer container II through a sewage outlet at the bottom of the deep cone concentration tank through a connecting pipeline, and residual slurry in a feeding pipeline flows back to the buffer container I from an emptying pipeline to be temporarily stored, or is directly pumped to a filter pressing device for filter pressing by the pumping device II.

The concentrated and flocculated slurry water in the temporary storage container II is continuously stirred by a matched stirrer (consisting of a driving part and a stirring part), so that the concentration is maintained in a state most suitable for pipeline pumping. When the slurry water in the buffer container II reaches the preset height, the second liquid level meter sensor sends a signal to the controller, the controller controls the two low-pressure pumps to work in turn, slurry water is conveyed to the chamber filter press to carry out filter pressing dehydration treatment, residual slurry water in the buffer pipeline flows into the buffer container II through the return pipeline, damage to the pumps is reduced, and the slurry water accumulation pipeline is prevented from being blocked.

The pressure sensor monitors the pressure in the filter press in real time, when the slurry water in the filter press reaches a set quantity, the pressure sensor sends a signal to the controller, the controller controls the two low-pressure pumps to stop working and simultaneously controls the high-pressure pumps to work, the high-pressure pumps start to continuously inject the slurry water into the box filter press to a saturated state, when the pressure sensor monitors that the internal pressure of the box filter press is in the saturated state, the pressure sensor sends a signal to the controller, the controller controls the high-pressure pumps to stop working, after the slurry cake and the clarified water are separated, the pressure sensor sends a signal to the controller when the pressure in the box filter press is restored to an initial state, and the controller controls the blowback air supply device to start air supply blowback to clean the residual slurry water in the box filter press.

The clarified water separated after filter pressing and dehydration flows into a recycling sedimentation tank through a pipeline, after natural sedimentation, the upper layer of the clarified water overflows into a recycling water tank, the recycled water is pumped into sand washing equipment for use by a clean water pump, and the lower layer of the sewage is sent into a deep cone concentration tank through a siphon tank by a centrifugal pump for repeated flocculation sedimentation; and uniformly transporting the mud cakes to a designated position by a slag transport vehicle for subsequent treatment.

When the concentrated flocculation slurry is accumulated to block the drain outlet at the bottom of the tank body, sewage in the recycling sedimentation tank can be pumped into the deep cone concentration tank from the drain outlet at the bottom of the deep cone concentration tank through a backflushing pipeline by connecting a centrifugal pump of the siphon tank, and the pipeline is dredged by backflushing cleaning.

Scattered sewage generated during maintenance of the whole system and rainwater generated by weather reasons flow automatically to a water collecting well through a small-inclination-angle drainage ditch, and are pumped into a deep cone concentration tank by a third slurry pump for concentration, sedimentation and cyclic utilization; part of rainwater and tap water are used for supplementing the water quantity of the reuse water tank, so that the water source is ensured to be sufficient for sand washing equipment.

In the whole treatment process of the sand washing slurry water treatment system, full-automatic control is realized through the controller, and the sand washing slurry water treatment system is simple to operate, safe and reliable and high in treatment efficiency.

The above-described embodiments are intended to illustrate the present utility model, not to limit it, and any modifications and variations made thereto are within the spirit of the utility model and the scope of the appended claims.

Claims (10)

1. A sand washing slurry water treatment system, comprising:

the buffer container I is arranged at a slurry outlet of the sand washing equipment to buffer slurry generated by the sand washing equipment;

the pumping device I is communicated with the cache container I;

the top feed inlet of the deep cone concentration tank is communicated with the outlet of the pumping device I through a feed pipeline;

the dosing device is communicated with a feed inlet of the deep cone concentration tank;

the inlet of the pumping device II is communicated with the sewage outlet of the deep cone concentration tank, and the pumping device II comprises a low-pressure pump and a high-pressure pump which are connected in parallel;

the feed inlet of the filter pressing device is respectively communicated with the low-pressure pump and the high-pressure pump through buffer pipelines;

the control device comprises a controller, a concentration detector arranged in the deep cone concentration tank and a pressure sensor arranged on the buffer pipeline, wherein the concentration detector and the pressure sensor are both in communication connection with the controller, and the controller is respectively and electrically connected with the pumping device I, the dosing device, the low-pressure pump, the high-pressure pump and the filter pressing device.

2. The sand washing slurry water treatment system according to claim 1, wherein a first liquid level sensor is arranged in the buffer container i, and the first liquid level sensor is in communication connection with the controller, so as to transmit the liquid level information of the slurry water in the buffer container i detected by the first liquid level sensor to the controller.

3. The sand washing slurry water treatment system according to claim 1, wherein the dosing device comprises a dosing container for containing a medicament, a dosing pump communicated with the dosing container, a dosing pipeline connected with the dosing pump, and a first flowmeter arranged in the dosing pipeline, the dosing pipeline is directly communicated with the feed inlet of the deep cone concentration tank, and the dosing pump and the first flowmeter are electrically connected with the controller.

4. A sand-wash slurry water treatment system as claimed in any one of claims 1 to 3, further comprising a reclamation device comprising:

the first end part of the first gravity flow pipeline is communicated with the overflow port of the deep cone concentration tank, and a first pneumatic valve part electrically connected with the controller is arranged on the first gravity flow pipeline;

the first end part of the second gravity flow pipeline is connected with the upper part of the first gravity flow pipeline, the second end part of the second gravity flow pipeline is used for being connected with sand washing equipment so as to convey clear water overflowed from the deep cone concentration tank to the sand washing equipment for washing sand, and a second pneumatic valve part electrically connected with the controller is arranged on the second gravity flow pipeline;

the recycling water pool is communicated with the second end part of the first gravity flow pipeline;

the recycling sedimentation tank is adjacent to the recycling water tank, an overflow port at the upper part of the recycling sedimentation tank is communicated with the recycling water tank, and a sewage outlet of the filter pressing device is communicated with the recycling sedimentation tank through a pipeline;

and the pumping device III is connected between the feeding pipeline and the sewage port at the lower part of the recycling sedimentation tank, and the pumping device III is electrically connected with the controller.

5. The sand washing slurry water treatment system according to claim 4, further comprising a backflushing pipeline, wherein one end of the backflushing pipeline is communicated with a discharge port of the pumping device III, the other end of the backflushing pipeline is communicated with a drain outlet of the deep cone concentration tank, and the backflushing pipeline, the pumping device III and the recycling sedimentation tank form a backflushing device.

6. The sand washing slurry water treatment system according to claim 4, further comprising a buffer container II, wherein the buffer container II is connected between a drain outlet of the deep cone concentration tank and the pumping device II, so as to buffer slurry water generated by concentration and flocculation of the deep cone concentration tank, a third pneumatic valve element is arranged on a connecting pipeline between the buffer container II and the drain outlet of the deep cone concentration tank and is electrically connected with the controller, a fourth pneumatic valve element is arranged on a connecting pipeline between the pumping device II and the drain outlet of the deep cone concentration tank and is electrically connected with the controller, and a fifth pneumatic valve element is arranged on a connecting pipeline between the pumping device II and the buffer container II and is electrically connected with the controller; a second liquid level sensor and a stirring piece are arranged in the cache container II, and the stirring piece is in shaft connection with a driving piece arranged outside the cache container II; the second liquid level sensor is in communication connection with the controller so as to transmit the liquid level information of the muddy water in the buffer container II detected by the second liquid level sensor to the controller, and the driving piece is electrically connected with the controller.

7. The sand washing slurry water treatment system according to claim 6, further comprising an evacuation pipeline and a return pipeline, wherein the evacuation pipeline is connected between the buffer container i and the feeding pipeline, the evacuation pipeline is provided with a first electromagnetic valve electrically connected with the controller, the return pipeline is connected between the buffer container ii and the buffer pipeline, and the return pipeline is provided with a second electromagnetic valve electrically connected with the controller.

8. The sand washing slurry water treatment system according to claim 6, wherein the pumping device i comprises a first slurry pump and a second slurry pump connected in parallel, and both the first slurry pump and the second slurry pump are electrically connected with the controller; the feed inlets of the first slurry pump and the second slurry pump are respectively communicated with the buffer container I, the discharge outlet of the first slurry pump is communicated with the feed pipeline through a first pipeline, a sixth pneumatic valve element electrically connected with the controller is arranged on the first pipeline, the discharge outlet of the second slurry pump is communicated with the feed pipeline through a second pipeline, and a seventh pneumatic valve element electrically connected with the controller is arranged on the second pipeline.

9. The sand washing slurry water treatment system of claim 8 further comprising a water collection device comprising a water collection well and a third slurry pump and a third level sensor disposed in the water collection well, the third slurry pump in communication with the feed inlet of the deep cone concentration tank through a sewer line, the sewer line having an eighth pneumatic valve electrically connected to the controller.

10. The sand-washing slurry water treatment system of claim 9 further comprising a blowback air supply, the blowback air supply comprising:

the air compressor is electrically connected with the controller;

the air inlet of the back-blowing air storage tank is communicated with the air compressor, and the air outlet of the back-blowing air storage tank is communicated with the filter pressing device so as to back-blow the filter pressing device;

the air inlet of the pneumatic air storage tank is communicated with the air compressor, the air outlet of the pneumatic air storage tank is communicated with the air inlet of the cold dryer, and the air outlet of the cold dryer is respectively connected with the first pneumatic valve element to the eighth pneumatic valve element to supply air for the first pneumatic valve element to the eighth pneumatic valve element.