CN214714760U

CN214714760U - Concrete mixing plant waste water recovery device

Info

Publication number: CN214714760U
Application number: CN202120572635.4U
Authority: CN
Inventors: 彭选会; 刘冬妮
Original assignee: Shaanxi Yongxing Machinery Manufacturing Co ltd
Current assignee: Shaanxi Yongxing Machinery Manufacturing Co ltd
Priority date: 2021-03-20
Filing date: 2021-03-20
Publication date: 2021-11-16
Anticipated expiration: 2031-03-20

Abstract

The application relates to a concrete mixing plant waste water recovery device especially relates to the field of concrete mixing plant waste water treatment. It includes waste water collecting pit and pressure filter, the inlet port department of waste water collecting pit is provided with the filter screen cage, the inlet port department at waste water collecting pit is established to the filter screen cage cover, the liquid outlet of waste water collecting pit and the inlet intercommunication of pressure filter. This application has the effect that promotes waste water recovery efficiency and the waste water quality of retrieving.

Description

Concrete mixing plant waste water recovery device

Technical Field

The application relates to the field of waste water treatment of concrete mixing plants, in particular to a waste water recovery device of a concrete mixing plant.

Background

The concrete mixing plant can produce more waste water in equipment cleaning and site washing, the waste water usually contains impurities such as cement particles, mineral powder, fly ash, fine aggregate, additives and the like, and if the waste water is directly discharged, the environment is seriously polluted and huge waste of water resources is caused.

The Chinese utility model patent with application number 201820483652.9 discloses a concrete wastewater recycling system, which comprises three sedimentation tanks arranged side by side and arranged on the ground, wherein a concrete layer is arranged at the contact position of the sedimentation tanks and soil, and one surface of the concrete layer facing the sedimentation tanks is an arc surface; a concrete wall is connected between the adjacent sedimentation tanks, and a drain hole is formed in the concrete wall; the sedimentation tank comprises a first sedimentation tank, a second sedimentation tank and a third sedimentation tank, and the second sedimentation tank is arranged between the first sedimentation tank and the third sedimentation tank; the drain holes comprise a first drain hole arranged between the first sedimentation tank and the second sedimentation tank and a second drain hole arranged between the second sedimentation tank and the third sedimentation tank, and the lowest part of the first drain hole is higher than the lowest part of the second drain hole; and a water pumping pipe for pumping water away is arranged on the third sedimentation tank.

In view of the above-mentioned related technologies, the inventor believes that in actual use, concrete wastewater is generated intermittently, while precipitation and water purification require a long standing time, even if three-stage precipitation is performed, the wastewater is difficult to be treated in time, and the defects of poor wastewater recovery quality and low recovery efficiency exist.

SUMMERY OF THE UTILITY MODEL

In order to promote waste water recovery efficiency and the waste water quality of retrieving, this application provides a concrete mixing plant waste water recovery unit.

The application provides a pair of concrete mixing plant waste water recovery device adopts following technical scheme:

the utility model provides a concrete mixing plant waste water recovery device, includes waste water collecting pit and pressure filter, the inlet department of waste water collecting pit is provided with the filter screen cage, the inlet department at waste water collecting pit is established to the filter screen cage cover, the liquid outlet of waste water collecting pit and the inlet intercommunication of pressure filter.

Through adopting above-mentioned technical scheme, the waste water that produces among the concrete production process discharges into the waste water collecting pit through the pipeline in, and waste water carries out primary filtration through the filter screen cage before getting into the waste water collecting pit, sieves out the big particle diameter stone and other debris in the waste water, and later the pressure filter draws the waste water in the waste water collecting pit and carries out the filter-pressing and handle, filters waste water through the pressure filter bag, and the water collection that filters is obtained is used as equipment and tank car washing. The concrete mixing plant waste water recovery device of design, it filters waste water mainly through filter screen cage and pressure filter cooperation, the filter screen cage carries out the prefilter to waste water, large particle diameter stone and debris in the waste water are sieved out, avoid using the filter press and cause the influence, the powder such as sand in the filter press with waste water, stone and cement, fly ash filters out, the recovery water impurity content that the filtration obtained is few, and filter speed is fast moreover, waste water recovery efficiency and the waste water quality of retrieving have been promoted.

Optionally, the inlet department of waste water collecting pit still has set firmly the joint frame, be provided with the installing port on the joint frame, the filter screen cage passes through the installing port and places in the joint frame.

Through adopting above-mentioned technical scheme, the joint frame of design for the fixed filter screen cage of joint is convenient for regularly clear up the impurity in the filter screen cage, helps guaranteeing waste water recovery device normal use.

Optionally, a stirrer is arranged in the wastewater collection tank, and stirring blades of the stirrer are arranged at the bottom of the wastewater collection tank.

Through adopting above-mentioned technical scheme, the mixer of design stirs the waste water in the waste water collecting pond, reduces the deposit of impurity such as grit in the waste water collecting pond in waste water collecting pond, reduces the clearance frequency in waste water collecting pond, facilitates the use.

Optionally, still retrieve the mechanism including the grit, the grit is retrieved the mechanism and is included filter cake transmission band and tertiary shale shaker, the filter cake transmission band sets up in the pressure filter below, be used for right the transportation is collected to the filter cake that the pressure filter produced, the discharge end of filter cake transmission band sets up in the feed inlet top of tertiary shale shaker, tertiary shale shaker is used for shaking the filter cake and scatters the screening for building stones, sand material and powder.

By adopting the technical scheme, the filter cake in the filter press is regularly cleaned, so that the filter cake falls on the filter cake conveying belt and is conveyed to the third-stage vibrating screen for vibrating screen, the filter cake is vibrated and dispersed under the vibration action of the third-stage vibrating screen and is separated into stone, sand and powder through the screen, the separated stone, sand and powder are respectively collected, the stone and sand are reused for concrete production, and the powder is collected as construction waste for treatment or is re-dissolved and homogenized for re-preparation into concrete slurry for recycling. The designed sand and stone recovery mechanism separates stones, sand and powder through the vibration sieve of the filter cake, reduces the treatment cost of waste cake, reduces the waste of raw materials and creates economic value again.

Optionally, side baffles are arranged on two sides of the material receiving section of the filter cake conveying belt.

Through adopting above-mentioned technical scheme, the side shield of design carries on spacingly to the filter cake on the filter cake conveyer belt, reduces the possibility that the filter cake drops in transmission process.

Optionally, inclined material guide plates are arranged above the side baffles, and the distance between the two inclined material guide plates and the side far away from the side baffles is larger than the distance between the two inclined material guide plates and the side close to the side baffles.

Through adopting above-mentioned technical scheme, the slope stock guide of design leads the filter cake at the filter cake whereabouts in-process, reduces the filter cake and falls the possibility to the region beyond the filter cake conveyer belt.

Optionally, be connected with powder collection component on the bottom discharge gate of tertiary shale shaker, powder collection component includes hose, collecting box and air exhauster, hose one end is connected on the bottom discharge gate of tertiary shale shaker, and the other end penetrates in the collecting box inner chamber, the air exhauster sets up on the collecting box, the suction opening and the collecting box inner chamber intercommunication of air exhauster, be provided with the separation filter screen on the suction opening of air exhauster.

Through adopting above-mentioned technical scheme, the powder collection subassembly of design carries out convulsions collection dirt through the air exhauster, promotes the collection quality to superfine powder such as cement, fly ash, powdered ore.

Optionally, chutes are arranged on the top layer discharge port and the middle layer discharge port of the three-stage vibrating screen, and collecting hoppers are arranged at the chute discharge ports.

Through adopting above-mentioned technical scheme, the chute and the collecting hopper of design cooperate and collect sand material and building stones, make things convenient for the retrieval and utilization.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the designed waste water recovery device for the concrete mixing plant is mainly used for filtering waste water through the matching of the filter screen cage and the filter press, the filter screen cage is used for primarily filtering the waste water, large-particle-size stones and sundries in the waste water are screened out, the influence on the use of the filter press is avoided, the filter press is used for filtering out sand, stones, cement, fly ash and other powder materials in the waste water, the content of impurities in the recovered water obtained by filtering is low, the filtering speed is high, and the waste water recovery efficiency and the quality of the recovered waste water are improved;

2. the designed sand and stone recovery mechanism separates stones, sand and powder through the vibration screening of the filter cake, reduces the treatment cost of waste cake, reduces the waste of raw materials and creates economic value again;

3. the designed powder collecting assembly performs air draft and dust collection through the exhaust fan, and improves the collecting quality of ultrafine powder materials such as cement, fly ash and mineral powder.

Drawings

FIG. 1 is a schematic view of the overall structure of a waste water recovery device of a concrete mixing plant according to an embodiment of the present application.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is an enlarged schematic view of a portion B in fig. 1.

Fig. 4 is a schematic structural view of a sand recovery mechanism according to an embodiment of the present application.

Description of reference numerals: 1. a wastewater collection tank; 11. a filter screen cage; 12. a clamping frame; 13. a blender; 2. a filter press; 3. a sand and stone recovery mechanism; 31. a filter cake conveying belt; 311. a side dam; 312. inclining the material guide plate; 32. a third-stage vibrating screen; 321. a hose; 322. a collection box; 323. an exhaust fan; 324. a chute; 325. a collection hopper.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses concrete mixing plant waste water recovery device. Referring to fig. 1, the waste water recovery device of the concrete mixing plant comprises a waste water collecting tank 1, a filter press 2 and a sand recovery mechanism 3.

Referring to fig. 1 and 2, a clamping frame 12, a filter screen cage 11 and a stirrer 13 are installed in the wastewater collection tank 1. Joint frame 12 passes through expansion bolts to be fixed on the inner wall of 1 inlet opening department in waste water collecting tank, and the installing port has been seted up to joint frame 12 top, and filter screen cage 11 places in joint frame 12 through the installing port, and filter screen cage 11 has been seted up near 1 inlet one side in waste water collecting tank and has been collected the mouth, collects mouthful just to setting up with 1 inlet in waste water collecting tank. The liquid outlet of the waste water collecting tank 1 is arranged at the bottom of the waste water collecting tank 1 and is communicated with the liquid inlet pipe of the filter press 2 through a pipeline. Waste water collecting tank 1 goes up the overlap joint and has the mounting panel, and mixer 13 passes through the bolt fastening on the mounting panel, and mixer 13's stirring vane stretches into waste water collecting tank 1, and the stirring vane of bottommost is located waste water collecting tank 1 bottom for stirring vane can carry out intensive mixing to the waste water in the stirring tank, reduces the deposit of solid particle such as grit in the waste water in the stirring tank.

Referring to fig. 1 and 3, the sand recycling mechanism 3 includes a filter cake transmission belt 31 and a three-stage vibrating screen 32, the material receiving end of the filter cake transmission belt 31 is placed below the filter press 2 and used for collecting and transporting filter cakes generated by the filter press 2, the frames on two sides of the material receiving section of the filter cake transmission belt 31 are fixed with side baffles 311 through bolts, inclined guide plates 312 are integrally arranged above the side baffles 311, and the distance between the two inclined guide plates 312 and the side of the side baffle 311 is greater than the distance between the two inclined guide plates 312 and the side of the side baffle 311. The discharge end of filter cake transmission band 31 sets up above the feed inlet of tertiary shale shaker 32, and tertiary shale shaker 32 can vibrate the filter cake and loose the screening for building stones, sand material and powder through the vibration.

Referring to fig. 4, chutes 324 are welded on the top layer discharge port and the middle layer discharge port of the third-stage vibrating screen 32, and a collecting hopper 325 is placed below the discharge ports of the chutes 324; the powder collecting assembly is connected to a bottom discharge hole of the three-stage vibrating screen 32 and comprises a hose 321, a collecting box 322 and an exhaust fan 323, one end of the hose 321 is connected to the bottom discharge hole of the three-stage vibrating screen 32 through a clamp, the other end of the hose penetrates into an inner cavity of the collecting box 322, the exhaust fan 323 is fixed to the collecting box 322 through a bolt, an exhaust opening of the exhaust fan 323 is communicated with an inner cavity of the collecting box 322, a separation filter screen is clamped to the exhaust opening of the exhaust fan 323, and the separation filter screen is not shown in the drawing.

The implementation principle of the concrete mixing plant wastewater recovery device in the embodiment of the application is as follows: waste water produced in the concrete production process is discharged into the waste water collecting tank 1 through a pipeline, the waste water is primarily filtered through the filtering net cage 11 before entering the waste water collecting tank 1, large-particle-size stones and other impurities in the waste water are screened out, then the waste water in the waste water collecting tank 1 is extracted by the filter press 2 to be subjected to filter pressing treatment, the waste water is filtered through the filter bags of the filter press 2, and recovered water obtained by filtering is collected to be used as equipment and tank car cleaning. And cleaning the filter cake in the filter press 2 regularly, so that the filter cake falls onto the filter cake conveying belt 31 and is conveyed to the third-stage vibrating screen 32 for vibrating screening, the filter cake is vibrated to disperse under the vibration action of the third-stage vibrating screen 32 and is separated into stone, sand and powder through a screen, the separated stone, sand and powder are respectively collected, the stone and sand are reused for concrete production, and the powder is collected to be used as construction waste for treatment or to be re-dissolved and homogenized to be re-prepared into concrete slurry for recycling.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a concrete mixing plant effluent recovery unit which characterized in that: including waste water collecting pit (1) and pressure filter (2), the inlet department of waste water collecting pit (1) is provided with filter screen cage (11), filter screen cage (11) cover is established in the inlet department of waste water collecting pit (1), the liquid outlet of waste water collecting pit (1) and the inlet intercommunication of pressure filter (2).

2. The waste water recovery device of a concrete mixing plant according to claim 1, characterized in that: the inlet department of waste water collecting pit (1) still has set firmly joint frame (12), be provided with the installing port on joint frame (12), filter screen cage (11) are placed through the installing port in joint frame (12).

3. The waste water recovery device of a concrete mixing plant according to claim 1, characterized in that: a stirrer (13) is arranged in the wastewater collection tank (1), and stirring blades of the stirrer (13) are arranged at the bottom of the wastewater collection tank (1).

4. The waste water recovery device of a concrete mixing plant according to claim 1, characterized in that: still retrieve mechanism (3) including the grit, grit is retrieved mechanism (3) and is included filter cake transmission band (31) and tertiary shale shaker (32), filter cake transmission band (31) set up in pressure filter (2) below, it is right to collect the transportation the filter cake that pressure filter (2) produced, the discharge end of filter cake transmission band (31) sets up in the feed inlet top of tertiary shale shaker (32), tertiary shale shaker (32) are used for shaking the filter cake and loose the screening for building stones, sand and powder.

5. The waste water recycling device of a concrete mixing plant according to claim 4, characterized in that: and side baffles (311) are arranged on two sides of the material receiving section of the filter cake conveying belt (31).

6. The waste water recovery device of a concrete mixing plant according to claim 5, characterized in that: inclined material guide plates (312) are arranged above the side baffle plates (311), and the distance between the two inclined material guide plates (312) far away from one side of the side baffle plates (311) is larger than that between the two inclined material guide plates (312) close to one side of the side baffle plates (311).

7. The waste water recycling device of a concrete mixing plant according to claim 4, characterized in that: be connected with the powder on the bottom discharge gate of tertiary shale shaker (32) and collect the subassembly, the powder is collected the subassembly and is included hose (321), collecting box (322) and air exhauster (323), hose (321) one end is connected on the bottom discharge gate of tertiary shale shaker (32), and the other end penetrates in collecting box (322) inner chamber, air exhauster (323) set up on collecting box (322), the suction opening and collecting box (322) inner chamber intercommunication of air exhauster (323), be provided with the separation filter screen on the suction opening of air exhauster (323).

8. The waste water recycling device of a concrete mixing plant according to claim 4, characterized in that: and chutes (324) are arranged on the top layer discharge hole and the middle layer discharge hole of the three-stage vibrating screen (32), and collecting hoppers (325) are arranged at the discharge holes of the chutes (324).