CN210159262U

CN210159262U - Waste recycling system of concrete mixing plant

Info

Publication number: CN210159262U
Application number: CN201920658420.7U
Authority: CN
Inventors: 陈志鹏; 任荣鑫; 董福明; 张蕾; 卢振华
Original assignee: Beijing Urban Construction Nine Concrete Co Ltd
Current assignee: Beijing Urban Construction Nine Concrete Co Ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-03-20
Anticipated expiration: 2029-05-08

Abstract

The utility model discloses a concrete mixing plant waste recycling utilizes system, including grit separator, collecting pit and storage pool, grit separator's output is located the collecting pit, the intercommunication mouth has been seted up between collecting pit and the storage pool, be provided with the sealing door who opens it or close on the intercommunication mouth, the device is added to the corrosion inhibitor ration to one side in storage pool is installed. The utility model discloses a waste recycling system is applicable to all concrete mixing plants, utilizes waste material waste water to form the new moist pipe product, finally realizes zero pollution.

Description

Waste recycling system of concrete mixing plant

Technical Field

The utility model relates to a waste recycling technical field, in particular to concrete mixing plant waste recycling utilizes system.

Background

The concrete mixing plant is a place for intensively producing concrete, the concrete needs to be transported to a construction site for use by using a mixer truck after being synthesized, but the mixer truck can produce residual and waste concrete in the production process, and the residual concrete can not be poured out, so that the residual concrete not only causes resource waste, but also can be changed into solidified waste garbage once being solidified without recycling or improper treatment, and can cause economic loss and environmental damage to enterprises and social environments.

The existing treatment method for waste materials generated by a concrete mixing plant and a mixing transport vehicle thereof comprises the following steps: (1) the waste slurry is precipitated and then transported to a mixing station for dumping, and the treatment mode has high cost and difficult dumping place, and cannot be dumped at will due to environmental protection requirements; (2) the sand and stone are separated and then stirred for use, and the problems that the concentration fluctuation is large, the control is difficult, the concrete quality fluctuation is large and the like exist; (3) waste slurry is dehydrated after sand-stone separation to form solid blocks with lower water content, and then the solid blocks are transported to a mixing station for pouring.

In the prior art, chinese utility model patent with publication number CN103663763B discloses a waste and wastewater recovery system and a method for recycling the system, the method carries out sedimentation treatment on waste slurry, one part of water is used for car washing in a car washing shed, the other part is used for cleaning relevant equipment of a stirring station, and the method has the problems that: 1. the waste water used for washing the vehicle and cleaning the equipment enters the waste slurry pool again for use, and waste slurry cannot be reduced; 2. the waste water of the part for stirring the concrete can not be used in a fixed concentration, so that the quality hidden danger exists; 3. according to the proportion of waste water produced, the system can only use a small amount of waste water, and the rest waste water needs to be treated by other methods.

The utility model discloses a chinese utility model patent of publication No. CN105082361B discloses a concrete mixing plant waste material residue utilizes system and operation process, and this method passes through sensor survey waste slurry concentration, converts into substituted fly ash content and water consumption automatically through calculation control platform, and the sewage weigher on the mixing plant is gone into to required sewage pump, unloads the mixer simultaneously with required clear water after weighing through sewage weigher and produces qualified concrete, and this method has the problem including: 1. the concentration range of the waste slurry is small, the accuracy of measuring the concentration of the waste slurry by using a sensor is low, and the using amount cannot be accurately controlled; 2. according to the method, the concentration of the waste slurry is measured through the sensor, technicians are required to adjust the consumption of the waste slurry in production according to different concentration values, the labor cost is increased, and the risk of inaccurate calculation exists; 3. in order to ensure the quality of concrete and reduce the using amount of sewage as much as possible, the method can cause the waste slurry to be incompletely used and also needs other treatment methods to treat the residual sewage; 4. the waste slurry contains particles such as fine cement, and the sensor can be damaged in the waste slurry for a long time, so that the maintenance frequency is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be applicable to all concrete mixing plant waste recycling system, utilize waste material waste water to form the moist pipe thick liquids of new, finally realize zero pollution.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a concrete mixing plant waste recycling utilizes system, includes grit separator, collecting pit and storage pool, grit separator's output is located the collecting pit, the intercommunication mouth has been seted up between collecting pit and the storage pool, be provided with the sealing door who opens it or close on the intercommunication mouth, corrosion inhibitor ration interpolation device is installed to one side in storage pool.

By adopting the technical scheme, when the waste recycling system works, the waste of a concrete mixing plant site and a mixer truck is washed by water and waste slurry is collected, the waste slurry is separated into homogeneous waste slurry and large-particle solid waste through a sand-stone separation device, the solid waste is screened into sand and stones to be recycled, the homogeneous waste slurry enters a collection pool, the waste slurry is preliminarily cleaned in the collection pool, after the completion, the communication port is opened, the waste slurry flows into a storage pool, and when the storage pool is full, the waste slurry is closed; and then adding a corrosion inhibitor into the storage tank according to a proportion, stirring the corrosion inhibitor and the homogenized waste slurry, fully mixing and reacting to obtain a wet pipe slurry, wherein the wet pipe slurry has good fluidity, and when the wet pipe slurry is used, the wet pipe slurry is extracted from the storage tank by a tank car and then is conveyed to a construction site to lubricate a conveying pump piston and the inner wall of a pipeline of a pump truck.

In the past decades, water and mortar are adopted to moisten the concrete delivery pump in the ready-mixed concrete industry all over the country, and currently, a pipe moistening agent is generally adopted to moisten the pipe, but no matter what way is adopted, extra cost is increased, but the pipe moistening slurry prepared from the waste slurry is economically, the pipe moistening cost can be saved, and the cost generated by cleaning waste materials can be saved; in the environment, the zero discharge of the sewage of the mixing plant is realized, the problem of difficult waste treatment of the concrete mixing plant is thoroughly solved, the phenomenon of dirty, messy and poor places of the mixing plant can be effectively changed, and the positive contribution to environmental protection is made.

The utility model discloses further set up to: the corrosion inhibitor quantitative adding device comprises a storage tank positioned on one side of the storage tank, a feeding pipe communicated with the storage tank, an electromagnetic valve and a booster pump which are installed on the feeding pipe, and a controller connected with the electromagnetic valve and the booster pump, wherein the controller is connected with a timer, the booster pump is positioned between the electromagnetic valve and the storage tank, and a feed inlet which can be closed is formed in the storage tank.

By adopting the technical scheme, a preset time is input into the timer, the timer is started through the switch, and a preset time signal is transmitted to the controller, so that the controller controls the electromagnetic valve and the booster pump to be opened, closed and operated in the preset time, and the quantitative addition of the corrosion inhibitor is realized.

The utility model discloses further set up to: the diapire of collecting pit and the diapire parallel and level of intercommunication mouth, and the diapire of collecting pit inclines by the one side orientation that is close to the intercommunication mouth of keeping away from the intercommunication mouth.

By adopting the technical scheme, the bottom wall of the collecting tank is flush with the bottom wall of the communication port, so that the homogeneous waste slurry in the collecting tank can completely flow into the storage tank; the bottom wall slope of collecting pit sets up the circulation process that makes useless thick liquid more smooth.

The utility model discloses further set up to: the communicating opening is detachably connected with a screen.

Through adopting above-mentioned technical scheme, the screen cloth filters the great impurity in the useless thick liquid, avoids the influence to moist pipe thick liquids performance.

The utility model discloses further set up to: the upper end of the inner side wall of the collecting tank is provided with a chamfer angle structure.

Through adopting above-mentioned technical scheme, the chamfer structure is convenient to be clear away the showy debris in the useless thick liquid, tentatively clears up the useless thick liquid in the collecting tank.

The utility model discloses further set up to: and a stirring device is arranged in the storage pool.

By adopting the technical scheme, the waste homogeneous material and the corrosion inhibitor are uniformly mixed, and the reaction is more complete.

The utility model discloses further set up to: and a water replenishing pipe is arranged on one side of the storage pool, and a protection plate is arranged on the upper end cover of the storage pool.

By adopting the technical scheme, the viscosity degree of the moistening pipe slurry has a great relationship with the water content of the moistening pipe slurry, and the top of the storage pool is covered with the protection plate so as to isolate the storage pool and reduce the water loss rate of the moistening pipe slurry; the moisturizing pipe thick liquids moisture in the storage pond is conveniently in time replenished to the moisturizing pipe.

The utility model discloses further set up to: and a sampler is arranged on the storage pool.

By adopting the technical scheme, the fluidity of the lubricating pipe slurry can be changed after the lubricating pipe slurry is stored in the storage pool for a long time, the lubricating pipe slurry is periodically sampled and detected by the sampler, and then corresponding treatment is carried out to keep the lubricating pipe slurry in a usable state at the moment.

The utility model discloses further set up to: a preparation table is arranged on one side of the collecting tank, the preparation table is integrally rectangular, the top surface of the preparation table is higher than that of the collecting tank, and the sand-stone separating device is arranged at the top of the preparation table; one side of the preparation table, which is far away from the collecting tank, is provided with a guide slope, and the side end of the preparation table is also provided with a sand collecting area and a stone collecting area.

Through adopting above-mentioned technical scheme, the direction slope makes things convenient for the concrete mixer truck to be close to sand and stone separator and arranges the material, and sand collection district and collection stone district are corresponding with sand and stone separator's sand export and stone export respectively, return the grit and the stone that sand and stone separator separated.

To sum up, the utility model discloses following beneficial effect has:

1. separating the waste materials by a sand-stone separator to obtain waste slurry without large particles, adding a corrosion inhibitor into the waste slurry to react to obtain slurry which is not precipitated and has good fluidity, and performing tube wetting treatment by using the slurry to recycle the waste materials, so that economic and environmental improvement is achieved;

2. the corrosion inhibitor is simple in composition and low in cost, does not introduce excessive chemical components, can be used as a pump wetting agent to wet a pump pipe after waste slurry is treated, cannot influence the performance of concrete conveyed in the pump pipe, and is high in safety;

3. by arranging the quantitative corrosion inhibitor adding device, the adding proportion of the corrosion inhibitor is ensured, and the performance of the pipe moistening slurry product is ensured.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is a top view of the embodiment;

FIG. 3 is a schematic view of a system of a quantitative adding device of a corrosion inhibitor in an embodiment.

In the figure, 1, a sand separation device; 2. a collection tank; 21. a communication port; 22. a sealing door; 23. screening a screen; 3. a storage pool; 4. a preparation table; 41. a guide ramp; 42. a sand collection area; 43. a stone collecting area; 5. a quantitative corrosion inhibitor adding device; 51. a storage tank; 52. a discharge pipe; 53. an electromagnetic valve; 54. a booster pump; 55. a controller; 56. a timer; 57. starting a switch; 6. a stirring device; 7. a protection plate; 8. a water replenishing pipe; 9. and a sampler.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): a waste recycling system of a concrete mixing plant comprises a sand-stone separating device 1, a waste mixing device and a waste mixing device, wherein the sand-stone separating device is used for separating waste into solid waste and homogeneous waste slurry; the collecting tank 2 is used for collecting the homogeneous waste slurry generated after the separation of the sand-stone separating device 1; and the storage pool 3 is used for processing the homogenized waste slurry to form a tube moistening slurry and storing the tube moistening slurry.

As shown in fig. 1 and 2, the output end of the sand-gravel separating device 1 extends into the collecting tank 2 and is positioned above the collecting tank 2; the storage pool 3 is provided with a plurality of storage pools which are arranged at one side of the collecting pool 2 side by side, and the collecting pool 2 and the storage pool 3 can be integrally cast and formed by concrete. The collecting tank 2 is provided with a plurality of communicating ports 21 on the wall, the collecting tank 2 is respectively communicated with each storage tank 3 through the communicating ports 21, each communicating port 21 is provided with a sealing door 22 for opening or closing the communicating port, and the connecting mode of the sealing door 22 can be selected to be splicing or hinging.

As shown in fig. 1, in order to facilitate the concrete mixer truck to dump the waste into the sand separator 1, a preparation table 4 is arranged side by side on one side of the collection tank 2, the preparation table 4 is rectangular as a whole, the top surface of the preparation table 4 is higher than that of the collection tank 2, and the sand separator 1 is installed on the top end of the preparation table 4. The side of the preparation table 4 close to the input end of the sand separating device 1 is provided with a guiding slope 41, and the guiding slope 41 is in smooth transition with the top surface of the preparation table 4, so that the concrete mixer truck is close to the sand separating device 1 through the guiding slope 41. The side end of the preparation table 4 is also provided with a sand collecting area 42 and a stone collecting area 43, the sand collecting area 42 and the stone collecting area 43 respectively correspond to a sand outlet and a stone outlet of the sand-stone separation device 1, and sand and stones separated by the sand-stone separation device 1 are collected.

As shown in fig. 2, the collecting tank 2 and the storage tank 3 are both rectangular box-shaped structures with open tops, the bottom wall of a communication port 21 communicating with each other is flush with the bottom wall of the collecting tank 2, and the bottom wall of the collecting tank 2 is inclined from one end close to the preparation table 4 to one end close to the communication port 21, so that the homogeneous waste slurry in the collecting tank 2 is discharged into the storage tank 3.

The upper end of the inner side wall of the collecting tank 2 is provided with a chamfering structure which is convenient for clearing floating impurities in the homogeneous waste slurry; the communicating port 21 is also inserted with a screen 23, the aperture of the screen 23 is 8-12mm, so as to further filter large particles in the homogeneous waste slurry, thereby completing the primary cleaning of the homogeneous waste slurry in the collecting tank 2. Standard lines are arranged on the wall of the storage pool 3, the storage capacity of each storage pool 3 is standard and fixed, and the standard lines are used for prompting people about the storage capacity of the storage pool 3.

As shown in fig. 2 and fig. 3, a corrosion inhibitor quantitative adding device 5 is arranged on one side of the storage tank 3, the corrosion inhibitor quantitative adding device 5 comprises a storage tank 51, a closable feeding hole is arranged on the storage tank 51, a discharging hole of the storage tank 51 is communicated with a feeding pipe, and the feeding pipe is introduced into the storage tank 3. The feeding pipe is provided with an electromagnetic valve 53 for controlling the feeding pipe to be opened or closed, a booster pump 54 is also connected to the feeding pipe and between the electromagnetic valve 53 and the storage tank 51, and the booster pump 54 provides constant pressure so that the corrosion inhibitor can be added into the storage tank 3 through the feeding pipe at a constant flow rate. The corrosion inhibitor quantitative adding device 5 further comprises a controller 55 and a timer 56, wherein the timer 56 is connected with the controller 55, and the controller 55 is connected with the electromagnetic valve 53 and the booster pump 54.

When the corrosion inhibitor is added into the storage pool 3 through the corrosion inhibitor quantitative adding device 5, firstly calculating the adding amount of the corrosion inhibitor, then calculating the corresponding adding time according to the unit flow of the feeding pipe, inputting a preset time (namely adding time) into the timer 56, starting the timer 56 through the starting switch 57, transmitting a preset time signal to the controller 55, and enabling the controller 55 to control the electromagnetic valve 53 and the booster pump 54 to be opened, closed and operated within the preset time so as to realize the quantitative adding of the corrosion inhibitor. Of course, the corrosion inhibitor can also be dosed using existing liquid metering tanks.

The storage tank 3 is further provided with a stirring device 6 (see fig. 1), and the stirring device 6 is used for stirring and mixing the homogeneous waste slurry and the corrosion inhibitor in the storage tank 3 to fully mix and react the homogeneous waste slurry and the corrosion inhibitor to form a tube-wetting slurry.

The utility model discloses a waste recycling system's working process includes following step:

(1) washing the concrete mixing plant site and the mixer truck waste with water and collecting the waste slurry;

(2) the waste slurry is separated into homogeneous waste slurry and large-particle solid waste through a sand-stone separation device 1, the solid waste is screened into sand and stones to be recycled, and the homogeneous waste slurry enters a collection pool 2;

(3) preliminarily cleaning the homogeneous waste slurry in the collecting tank 2, opening the communication port 21 after finishing the preliminary cleaning, enabling the homogeneous waste slurry to flow into the corresponding storage tank 3, and closing the communication port 21 after the homogeneous waste slurry is added to a standard amount;

(4) sampling and measuring the homogeneous waste pulp in the storage pool 3, calculating the density of the homogeneous waste pulp according to the relation between the volume V and the weight m, and calculating the concentration of the homogeneous waste material according to the linear relation between the percentage concentration of the homogeneous waste pulp and the density;

wherein, the linear relation between the solid content and the density is as follows: y is ax + b, a is 0.007-0.008, b is 0.990-0.994, y is density, and x is solid content percentage concentration;

in the present invention, a is 0.0076, and b is 0.9918.

(5) Calculating the concentration of the obtained homogeneous waste slurry, blending to ensure that the concentration (solid content) of the homogeneous waste slurry is 45-75 wt%, and then adding a corrosion inhibitor according to 2-10% of the weight of the homogeneous waste slurry;

wherein, the corrosion inhibitor is formed by mixing 10-15 parts of glucose, 25-35 parts of citric acid and 55-65 parts of water by weight.

After calculation, when the calculated concentration of the homogenized waste slurry is greater than the set percentage concentration of solid content (45 wt% -75 wt%), calculating the water adding amount according to V and m, then supplementing water according to calculation, adjusting the concentration of the homogenized waste slurry in the storage pool 3 to the set percentage concentration of solid content (45 wt% -75 wt%), and stopping supplementing water; when the calculated concentration of the homogenized waste pulp is less than the set percentage concentration of solid content (45 wt% -75 wt%), which is low in actual occurrence probability, the homogenized waste pulp in the storage tank 3 is concentrated until the concentration of the homogenized waste pulp is adjusted to the set percentage concentration of solid content (45 wt% -75 wt%).

(6) Starting the stirring device 6 to fully mix the corrosion inhibitor and the homogenized waste slurry to obtain the final product of the tube moistening slurry.

The pipe moistening slurry has good fluidity, can not precipitate, condense or harden, and can be used for lubricating the piston of the delivery pump of the pump truck and the inner wall of the pipeline. In the past decades, water and mortar are adopted to moisten the concrete delivery pump in the ready-mixed concrete industry all over the country, and currently, a pipe moistening agent is generally adopted to moisten the pipe, but no matter what way is adopted, extra cost is increased, but the pipe moistening slurry prepared from the waste slurry is economically, the pipe moistening cost can be saved, and the cost generated by cleaning waste materials can be saved; in the environment, the zero discharge of the sewage of the mixing plant is realized, the problem of difficult waste treatment of the concrete mixing plant is thoroughly solved, the phenomenon of dirty, messy and poor places of the mixing plant can be effectively changed, and the positive contribution to environmental protection is made.

The pipe moistening slurry can not be used immediately after being prepared and can be stored in the storage pool 3 for a period of time, the viscosity degree of the pipe moistening slurry has a great relation with the water content of the pipe moistening slurry, but the effect of preventing the water loss of the pipe moistening slurry in the open storage pool 3 is general, and the water loss of the pipe moistening slurry is quicker especially in hot summer; in order to reduce the influence of the problem on the fluidity of the moistening pipe slurry, as shown in fig. 1, a protective plate 7 for covering the storage tank 3 is covered on the top of each storage tank 3 so as to isolate the storage tanks 3 and reduce the loss rate of the moistening pipe slurry; still be provided with moisturizing pipe 8 in one side of storage pool 3, the running water is connected to moisturizing pipe 8's input, and the output sets up to lead to more, with every storage pool 3 one-to-one to in time supply moist tub thick liquids moisture in the storage pool 3.

After the tube moistening slurry is stored in the storage tank 3 for a long time, the mobility of the tube moistening slurry may change due to the water content, and in order to ensure that the tube moistening slurry can be used at any time, as shown in fig. 1, a sampler 9 is arranged on each storage tank 3, the tube moistening slurry is periodically sampled and detected by the sampler 9, and then corresponding processing is performed to keep the tube moistening slurry in a usable state at any time.

When the storage pool 3 is full, the tube moistening slurry can be extracted into a sealing barrel for sealing and storing, so that the tube moistening slurry is convenient to transfer and utilize, and can be bought and sold as a product to play a role in popularizing the tube moistening slurry generated by waste materials; the vacated storage pool 3 can also treat the waste materials, and the waste materials are discharged in a zero way by the aid of reciprocating circulation.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a concrete mixing plant waste recycling system which characterized in that: including grit separator (1), collecting pit (2) and storage pond (3), the output of grit separator (1) is located collecting pit (2), intercommunication mouth (21) have been seted up between collecting pit (2) and storage pond (3), be provided with sealing door (22) of opening it or closing on intercommunication mouth (21), corrosion inhibitor ration is installed to one side in storage pond (3) and is added device (5).

2. The concrete batching plant waste recycling system according to claim 1, characterized in that: the corrosion inhibitor quantitative adding device (5) comprises a storage tank (51) positioned on one side of the storage tank (3), a feeding pipe communicated with the storage tank (51), an electromagnetic valve (53) and a booster pump (54) which are installed on the feeding pipe, and a controller (55) connected with the electromagnetic valve (53) and the booster pump (54), wherein the controller (55) is connected with a timer (56), the booster pump (54) is positioned between the electromagnetic valve (53) and the storage tank (51), and a feed inlet which can be closed is formed in the storage tank (51).

3. The concrete batching plant waste recycling system according to claim 1, characterized in that: the bottom wall of the collecting tank (2) is flush with the bottom wall of the communication port (21), and the bottom wall of the collecting tank (2) is inclined towards the side close to the communication port (21) from the side far away from the communication port (21).

4. The concrete batching plant waste recycling system according to claim 1, characterized in that: the communicating opening (21) is detachably connected with a screen (23).

5. The concrete mixing plant waste recycling system of claim 4, wherein: the upper end of the inner side wall of the collecting tank (2) is provided with a chamfer angle structure.

6. The concrete batching plant waste recycling system according to claim 1, characterized in that: and a stirring device (6) is arranged in the storage pool (3).

7. The concrete batching plant waste recycling system according to claim 1, characterized in that: one side of the storage pool (3) is provided with a water replenishing pipe (8), and the upper end cover of the storage pool (3) is provided with a protection plate (7).

8. The concrete batching plant waste recycling system according to claim 1, characterized in that: and a sampler (9) is arranged on the storage pool (3).

9. The concrete batching plant waste recycling system according to claim 1, characterized in that: a preparation table (4) is arranged on one side of the collecting tank (2), the preparation table (4) is integrally rectangular, the top surface of the preparation table (4) is higher than that of the collecting tank (2), and the sand-stone separating device (1) is arranged on the top of the preparation table (4); a guide slope (41) is arranged on one side, away from the collecting tank (2), of the preparation table (4), and a sand collecting area (42) and a stone collecting area (43) are further arranged at the side end of the preparation table (4).