CN216605608U - Sand washing system of water recovery purification type - Google Patents

Abstract

The utility model discloses a water recovery and purification type sand washing system which mainly comprises a sand washing machine, a sewage purification tank and a sand washing and precipitating device, wherein the sand washing machine is provided with a water pump for pumping sediment containing sand washing particles into a hydrocyclone, the hydrocyclone enters the sand washing and precipitating device through a water return pipe after separation, sewage overflowing through the sand washing and precipitating device is discharged into the sewage purification tank through a water discharge pipe, a partition plate of the sewage purification tank realizes separation, and the sewage on one side overflows from the top and is collected by the water pump and supplied to a spraying device for sand washing, and is also pumped into the hydrocyclone, so that continuous cyclic purification is realized, and the discharge of the sewage is reduced.

Description

Sand washing system of water recovery purification type

Technical Field

The utility model belongs to sand washing equipment, and particularly relates to a water recovery and purification type sand washing system.

Background

In the sand washing process, a sand washing machine is generally used, and the sand washing machine is widely used in industries such as sand and stone fields, mines, building materials, traffic, chemical engineering, water conservancy and hydropower, concrete mixing stations and the like, can remove impurities covering the surface of sand and stone and damage a water vapor layer covering sand grains so as to be beneficial to dehydration and play a role in efficient sand washing and cleaning. The sand washer is also called a stone washer, is mainly used for removing impurities (such as dust) from sand products, and is called sand washing because a water washing method is frequently used. Among them, machine-made sand (crushed from stone material) is generally called a stone washer. Because of their different appearances and principles, they are also called spiral sand washers, drum sand washers, water wheel sand washers (also called wheel sand washers), vibration sand washers, etc.

In the sand washing process, a hydrocyclone, which is a device for generating a rotating motion by using fluid pressure, is also used. When slurry enters the cyclone at a certain speed, the slurry is forced to make a rotary motion after meeting the wall of the cyclone. Because of different centrifugal forces, the solid coarse particles in the slurry are subjected to large centrifugal force, can overcome hydraulic resistance to move towards the wall of the slurry and spirally move downwards along the wall of the slurry under the combined action of the gravity of the slurry, and the fine particles and most of water do rotary motion along the slurry before approaching the wall of the slurry because of small centrifugal force. Under the push of the subsequent feeding, the slurry continues to move downwards and in a rotating way, so that coarse particles continue to be concentrated towards the periphery, fine particles stay in the central area, and the particle size of the particles is gradually increased from the center to the wall of the device to form a layered arrangement. As the slurry flows from the column part to the cone part of the cyclone, the flow section is smaller and smaller, under the contraction and compression of the outer layer slurry, the inner layer slurry containing a large amount of fine particles has to change the surface direction, moves upwards to form an inner rotational flow, is discharged from the overflow pipe to become an overflow, and the coarse particles continue to move downwards along the wall of the cyclone to form an outer rotational flow and are finally discharged from the bottom flow port to become settled sand.

With the continuous deepening of the concept of environmental protection, most of the processes of sand collection and sand washing adopt water washing, sand and stone are mixed through water, and then finished sand is obtained by cleaning slurry.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: aiming at the waste and pollution of water resources caused in the existing sand washing process, the utility model provides a water recovery and purification type sand washing system, which realizes the cyclic utilization of water and the sewage discharge.

The technical scheme is as follows: a sand washing system of a water recovery purification type comprises a sand washing machine, a sand washing sedimentation device and a sewage purification tank, wherein water and slurry in the sewage purification tank are conveyed to a hydrocyclone on the sand washing machine through a water pump, sewage separated by the hydrocyclone flows into the sand washing sedimentation device through a water return pipe, the sewage overflowing after being precipitated by the sand washing sedimentation device is discharged into the sewage purification tank through a drainage pipe, the sewage subjected to vibration filtration by a composite screen on the sand washing machine is also discharged into the sewage purification tank, and the sewage purification tank comprises water for supplying a sand washing spraying device;

the sewage purification tank is provided with a sewage standing tank for sediment precipitation, and is provided with a first separation baffle and a second separation baffle for sewage filtration;

the bottom of the sand washing and precipitating device is provided with a fine sand precipitating cavity, and a drain pipe at the top of the sand washing and precipitating device is used for draining sewage;

and after the hydrocyclone in the sand washer separates slurry, the slurry is filtered by a composite screen below the sand washer through a screening, a sand washing and spraying device is arranged on the composite screen, and the sand washing is subjected to vibration filtering through the composite screen to realize the collection of finished sand.

Furthermore, the sand washer is provided with two-stage screening devices, and the sand washer is provided with a sand washing and spraying device step by step.

The sand washing and precipitating device is characterized in that a conical fine sand precipitating cavity is arranged at the lower layer, a sewage precipitating cavity is arranged at the upper layer, a baffle is arranged in the sewage precipitating cavity, the inlet and the outlet of sewage are separated by the baffle, the sewage flowing into the sewage precipitating cavity from a water return pipe enters from one side and overflows to the other side through the baffle, and the sewage is discharged by a water discharge pipe arranged at the top of one side of the sewage precipitating cavity; the fine sand sedimentation cavity bottom connect and be provided with drainage pipe and discharge the ponding in the fine sand sedimentation cavity to the sewage purification pond in, fine sand sedimentation cavity bottom is including setting up filter screen and drainage control valve with drainage pipe's junction.

Further, sewage purification pond in be equipped with first separation baffle and second separation baffle, first separation baffle and second separation baffle set up oppositely, first separation baffle is by the vertical upwards setting in bottom of sewage purification pond, the second separation baffle is by the perpendicular downward setting in top of sewage purification pond, include to be equipped with the circulation of opening and shutting the door in order to block sewage on first separation baffle and second separation baffle.

Has the advantages that: compared with the prior art, the sand washing system with the water recovery and purification functions provided by the utility model is combined with the existing sand washing machine, the use of the sand washing machine is optimized, the system is established aiming at the problem of water consumption during sand washing, and the cyclic utilization and purification of water resources are realized by arranging the sand washing sedimentation device and the sewage purification tank, so that the sewage discharge is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a water recovery and purification type sand washing system according to the present invention.

In the figure: 1. the system comprises a sewage purification pool, a sewage standing pool, a 2 water return pipe, a 3 hydrocyclone, a 4 sand washing sedimentation device, a 5 fine sand sedimentation cavity, a 6 baffle, a 601 first separation baffle, a 602 second separation baffle, a 7 drain pipe, a 8 water pump, a 9 water outlet, a 10 sand washing spraying device.

Detailed Description

In order to explain the technical scheme disclosed by the utility model in detail, the following description is further made by combining the accompanying drawings of the specification.

The utility model provides a water recovery and purification type sand washing system, which is shown in figure 1. The system is mainly used for the sand mining and washing process of the mine. For sand washing, impurities and the like on the surfaces of sand stones are cleaned by water, and fine sand and finished sand meeting the requirements are obtained through operations such as screening, dewatering and the like of a composite sieve on a sand washing machine.

The utility model provides a sand washing system of water recovery purification type mainly includes sand washer, sewage purification pond and sand washing sediment device, and sand washer is the equipment that washs the grit, and it includes hydraulic cyclone and composite sieve, and composite sieve includes TS type or all kinds of vibrating. The sand washing sedimentation device is used for precipitating sewage after the separation of the hydrocyclone, and the discharged water contains a large amount of sand stones and sundry foreign matters after the sand washing mixed slurry passes through the hydrocyclone, the sand washing sedimentation device is arranged to realize physical standing separation, a sewage purification tank is further arranged, the sewage purification tank has the functions of separating and precipitating a part of sand and sand sundry matters, the separated water containing low-content impurities is recycled, and the sand washing sedimentation device also comprises a structure for setting physical separation and filtering, and filtering large-particle impurities and the like.

With reference to fig. 1, the space and size of the sand washer, the sand washing and precipitating device and the sewage purification tank are arranged according to the field arrangement. The water stored in the sewage purification pool 1 is pumped to a hydrocyclone 3 of the sand washer by a water pump, clear water is conveyed by the water pump, the clear water and sand to be cleaned are mixed to form slurry before entering the hydrocyclone 3, the slurry is also mixed in the sewage purification pool 1, or an independent mixing pool is arranged, then the hydrocyclone 3 of the sand washer is separated, and sewage containing part of fine sand and impurities is conveyed to a sand washing and precipitating device 4 by a water return pipe 2. The sand washing and precipitating device 4 comprises an upper stage and a lower stage, the upper part of the sand washing and precipitating device is a sewage precipitating cavity, the bottom of the sand washing and precipitating device is a conical fine sand precipitating cavity 5, and fine sand, gravel, impurities and the like in the sewage are precipitated in the fine sand precipitating cavity 5. The sewage sedimentation chamber on upper strata contains sand and impurity comparatively speaking less, in the sewage sedimentation chamber on upper strata, is equipped with baffle 6, and baffle 6 is by the top setting, and vertically downwards separates into two spaces with the upper portion of sewage sedimentation chamber, and the left side shown in figure 1 is intake, discharges to sewage purification pond 1 by the drain pipe 7 on right side after the sewage sedimentation again. The bottom of the conical fine sand settling cavity 5 is provided with a drainage pipe for discharging sewage after standing from the bottom, and the drainage pipe and the drainage port can be provided with filter screens for physical filtration.

In the case of the effluent purification tank 1, it is shown as including two zones, one being the effluent settling tank 101 on the left side and one being the clean water tank on the right side. The sewage standing tank 101 and the water inlet tank on the right side are separated by a first separation baffle 601 and a second separation baffle 602 and are oppositely arranged, and the sewage purification tank 1 is additionally provided with other areas, such as a sand-gravel mixing area, a slurry area and a water replenishing area. The operation of the sewage purification tank 1 will be described in detail with reference to one case of water used in the sand washing process. In-process at the sand washing, at first, pour into certain water into and be used for washing sand, the volume and the degree of depth of sewage purification pond 1 set up more than the several meters, then 8 water delivery of water pump, the clean water reservoir water yield on right side reduces, on its left side, because of the continuous injection of sewage, the bottom deposits, sewage reaches the space between the top of a take the place of altitude after can be by first separation baffle 601 and sewage purification pond 1 and diffuses to the right side, under the switching door of first separation baffle 601 and second separation baffle 602 opened the condition, water after the left side deposits can enter into the clean water reservoir, and then the further moisturizing of the degree of depth at water pump place is used for subsequent washing.

In the water flow direction shown in fig. 1, another case of cleaning is also shown, the direction and direction of the water flow is used for direct purification, filtration or transfer from a water pump to the next sewage treatment plant directly through the basin on the left side of the figure. It is also possible for the baffle 6, the first separating baffle 601 and the second separating baffle 602 to be provided as filter devices, which obstruct the flow of fine sand, silt, sand particles, etc. Even include to set up the filter-tank at the bottom plate of sewage purification pond 1, separate by the filter, further filtration grit impurity, the water cyclic utilization once more after the filtration to reduce newly-increased water consumption and the emission of sewage.

When the system is combined with the sand washer to perform screening and filtering, a plurality of screening levels can be added according to the actual fine sand requirement of a product, a plurality of composite screens are used for processing, water filtered by the sewage purification tank 1 is supplied to the sand washing and spraying device 10, and water filtered and permeated by the composite screens is recycled to the sewage purification tank 1 again through the water outlet 9 at the bottom of the sand washer.

Claims (5)

1. The utility model provides a water reclamation purification type's sand washing system, includes sand washer, sand washing sediment device and sewage purification pond, its characterized in that: conveying water and slurry in a sewage purification tank (1) to a hydrocyclone (3) on a sand washer through a water pump, wherein sewage separated by the hydrocyclone (3) flows into a sand washing and precipitating device (4) through a water return pipe (2), the sewage overflowing after being precipitated by the sand washing and precipitating device (4) is discharged into the sewage purification tank (1) through a water discharge pipe (7), the sewage subjected to vibration filtration by a composite screen on the sand washer is also discharged into the sewage purification tank (1), and the sewage purification tank (1) comprises water for supplying a sand washing and spraying device (10);

the sewage purification tank (1) is provided with a sewage standing tank (101) for sediment precipitation, and is provided with a first separation baffle (601) and a second separation baffle (602) for sewage filtration;

a fine sand settling cavity (5) is arranged at the bottom of the sand washing and settling device (4), and sewage overflows from a drain pipe (7) at the top;

and after the hydrocyclone (3) in the sand washer separates slurry, the composite sieve below the sand washer filters the slurry through a separating sieve, the composite sieve is provided with a sand washing and spraying device (10), and the sand washing is subjected to vibration filtering through the composite sieve to realize finished product sand collection.

2. The water recovery purification type sand washing system according to claim 1, wherein: the sand washer is provided with two-stage screening devices, and comprises a sand washing and spraying device (10) which is arranged stage by stage.

3. The water recovery purification type sand washing system according to claim 1, wherein: wash husky sediment device (4) lower floor and be equipped with conical fine sand sedimentation chamber (5), its upper strata is sewage sedimentation chamber, is equipped with baffle (6) in the sewage sedimentation chamber, separates the business turn over of sewage through baffle (6), return water pipe (2) flow in sewage sedimentation intracavity sewage get into by one side, and spill over to one side in addition through baffle (6), discharge by drain pipe (7) that set up in sewage sedimentation chamber one side top.

4. A water recovery purification type sand washing system according to claim 3, wherein: fine sand sedimentation chamber (5) bottom connect and be provided with drainage pipe and discharge to sewage purification pond (1) with the ponding in fine sand sedimentation chamber (5) in, fine sand sedimentation chamber (5) bottom is including setting up filter screen and drainage control valve with drainage pipe's junction.

5. The water recovery purification type sand washing system according to claim 1, wherein: sewage purification pond in be equipped with first separation baffle (601) and second separation baffle (602), first separation baffle (601) and second separation baffle (602) set up oppositely, first separation baffle (601) are by the vertical upwards setting in bottom of sewage purification pond, second separation baffle (602) are by the perpendicular downward setting in top of sewage purification pond, include and be equipped with the circulation of opening and shutting the door in order to block sewage on first separation baffle (601) and second separation baffle (602).

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