Wastewater and slurry recycling device for ready-mixed concrete mixing station

Abstract

The present invention belongs to the field of environmental protection and energy-saving application technology, and in particular, relates to a wastewater and waste slurry recycling device for a ready-mixed concrete mixing station. It includes a device body arranged in a cylindrical shape, a driving motor is arranged on the top of the device body, a power end of the driving motor is connected to a reducer, an output end of the reducer is connected to a rotating shaft, and the rotating shaft is extended into the device body. The present invention utilizes the cylindrical device body in conjunction with the setting of the partition plate to form a processing grid to complete the collection and stillness of wastewater and waste slurry, utilizes the coordinated setting of the driving motor and the reducer, and utilizes the setting of the overflow pipe and the discharge slot hole under slow rotation to achieve the separation of water and aggregate, and at the same time, completes the cleaning of the processing grid, and then through the setting of the auger conveyor and the screen drum, further completes the graded treatment of water and aggregate, and then realizes multi-stage treatment without a pump, and realizes the processing work of recycling.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection and energy-saving applications, and in particular relates to a wastewater and waste slurry recycling device for a ready-mixed concrete mixing station. Background Art

[0002] With the widespread use of commercial concrete, concrete mixing plants generate a large amount of wastewater and waste materials while producing commercial concrete. The discharge of these wastes mainly comes from the wastewater and waste slurry generated by cleaning the mixer truck, the mixer main machine, and the flushing of the production site, as well as the surplus of concrete factory monitoring sampling, and the surplus and scrapped concrete caused by force majeure.

[0003] At present, the treatment of this type of wastewater and waste slurry is usually to configure a vibrating screen or a drum screen in the concrete mixing station to treat the concrete pump truck washing wastewater. Although this method can solve the problem of wastewater and waste slurry, since the wastewater is usually not coherent, it needs to be stored first and then pumped into the vibrating screen or drum screen. In this way, the pump is easily damaged by the wear of aggregates. At the same time, the storage of wastewater also requires frequent cleaning of the bottom of the storage tank, which leads to low efficiency and high cost. Summary of the invention

[0004] Aiming at the technical problems existing in the treatment of wastewater and waste slurry from existing ready-mixed concrete mixing plants, the present invention proposes a wastewater and waste slurry recycling device for ready-mixed concrete mixing plants which has a reasonable design, a simple structure and can effectively improve the treatment efficiency and reduce the treatment cost.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: the present invention provides a wastewater and waste slurry recycling device for a ready-mixed concrete mixing station, comprising a device body arranged in a cylindrical shape, a driving motor is arranged on the top of the device body, the power end of the driving motor is connected to a reducer, the output end of the reducer is connected to a rotating shaft, the rotating shaft is extended into the device body, a layer plate is arranged in the device body, the layer plate divides the interior of the device body into two upper and lower chambers, a partition is arranged on the side wall of the rotating shaft, the partition is evenly distributed on the rotating shaft in a ring shape, the partition divides the upper chamber of the device body into a plurality of processing grids, and a wastewater and waste slurry pipe is also arranged on the top of the device body, the wastewater and waste slurry pipe It is arranged in the body of the device, and an overflow pipe is arranged on the side wall of the device body. A discharge trough hole is also arranged on the layer plate. The overflow pipe and the discharge trough hole are adjacent to each other and correspond to different processing grids. An auger conveyor is arranged below the discharge trough hole, and the conveying shaft of the auger conveyor extends out of the auger conveyor. The conveying shaft of the auger conveyor extends out of the auger conveyor and is provided with a driving gear at one end. A screen cylinder is arranged below the auger conveyor, and one end of the screen cylinder is provided with a meshing gear, and the meshing gear is meshed with the driving gear. The end of the screen cylinder away from the meshing gear passes through the side wall of the device body, and a discharge cylinder is arranged below the screen cylinder, and the discharge cylinder passes through the bottom of the device body.

[0006] Preferably, a water outlet is provided on the side wall of the auger conveyor, and a center plate is provided in the lower chamber in the device body. The center plate divides the lower chamber in the device body into two left and right chambers. The center plate forms end supports for the auger conveyor and the screen drum. The auger conveyor and the screen drum are respectively located in the left and right chambers. A water outlet pipe matching the water outlet is provided at the bottom of the device body.

[0007] Preferably, the overflow pipe includes a first overflow pipe and a second overflow pipe, the first overflow pipe and the second overflow pipe are arranged at intervals in the upper and lower directions along the rotation direction of the partition, and the first overflow pipe and the second overflow pipe correspond to different processing grids respectively.

[0008] Preferably, the first overflow pipe and the second overflow pipe are both connected to a separatory pipe, a filter is arranged inside the separatory pipe, the filter is arranged obliquely inside the separatory pipe, the separatory pipe is also connected to an impurity pipe, the pipe mouth of the impurity pipe is arranged near the bottom of the filter in the liquid inlet direction, and a detachable cover is arranged at one end of the impurity pipe away from the separatory pipe.

[0009] Preferably, the filter screens on the side walls of the screen drum are arranged in at least two stages from the feed direction to the discharge direction.

[0010] Compared with the prior art, the advantages and positive effects of the present invention are:

[0011] 1. The present invention provides a wastewater and waste slurry recycling device for a ready-mixed concrete mixing station. The device body is arranged in a cylindrical shape and a partition is arranged to form a processing grid to collect and stationary the wastewater and waste slurry. The driving motor and the reducer are arranged in a coordinated manner. Under the condition of slow rotation, the overflow pipe and the discharge slot hole are arranged to separate the water and aggregate. At the same time, the processing grid is cleaned. The auger conveyor and the screen drum are arranged to further complete the graded treatment of the water and aggregate. In addition, multi-stage treatment is achieved without a pump, and the recycling treatment work is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 A schematic diagram of the structure of the wastewater and waste slurry recycling device for a ready-mixed concrete mixing station provided in Example 1;

[0014] Figure 2 A cross-sectional view of the wastewater and waste slurry recycling device for a ready-mixed concrete mixing station provided in Example 1;

[0015] Figure 3 A half-section diagram of the wastewater and waste slurry recycling device for a ready-mixed concrete mixing station provided in Example 1;

[0016] Figure 4 A schematic diagram of the structure of the liquid dispensing tube provided in Example 1;

[0017] In the above figures, 1. device body; 11. layer plate; 111. discharge slot hole; 12. center plate; 13. wastewater and waste slurry pipe; 14. first overflow pipe; 15. second overflow pipe; 16. water outlet pipe; 17. discharge barrel; 2. drive motor; 21. reducer; 22. rotating shaft; 23. partition; 3. auger conveyor; 31. conveying shaft; 32. drive gear; 33. water outlet hole; 34. auger motor; 4. screen cylinder; 41. meshing gear; 42. filter screen; 5. liquid separation pipe; 51. filter screen; 52. impurity pipe; 53. cover. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Examples, such as Figure 1 to Figure 4 As shown, the present embodiment aims to provide a solution to the technical problems that the wastewater and waste slurry in the existing ready-mixed concrete mixing station are discontinuous and contain a large amount of aggregate, which leads to easy damage of the transmission pump, high cost of use and low efficiency. To this end, the present embodiment provides a wastewater and waste slurry recycling device for a ready-mixed concrete mixing station, including a device body 1 arranged in a cylindrical shape. In order to avoid the use of a pump, the device body 1 should be set at a height below the ground, just like the existing wastewater storage tank, which is dug down and uses gravity to make it flow to the device body 1, so as to reduce the setting of the pump.

[0021] Considering that the wastewater and waste slurry in the ready-mixed concrete mixing station are mainly used for cleaning the mixer truck, the mixing main machine, and the wastewater and waste slurry generated by flushing the production site, and the mixer truck is not cleaned continuously, its filling time is much longer than the cleaning time, which leads to the discontinuous generation of wastewater and waste slurry, and this is also the reason for the setting of the wastewater storage tank. In order to avoid cleaning the wastewater storage tank, in this embodiment, a wastewater and waste slurry pipe 13 is also provided on the top of the device body 1, and the wastewater and waste slurry pipe 13 is extended into the device body 1.

[0022] A driving motor 2 is arranged on the top of the device body 1. The main purpose of the driving motor 2 is to drive the rotating shaft 22. A partition 23 is arranged on the side wall of the rotating shaft 22. The partitions 23 are evenly distributed on the rotating shaft 22 in an annular shape. In this embodiment, a total of 6 partitions 23 are arranged. The processing grids formed between the partitions 23 are used to store wastewater and waste slurry. When the wastewater and waste slurry are stored to a specified height, the rotating shaft 22 rotates and the empty processing grids are used for continued storage. The setting of the partitions 23 will scrape away all the wastewater and waste slurry in the processing grid. At the same time, due to the discontinuity of the wastewater and waste slurry, the wastewater and waste slurry stay in the processing grid for a longer time, and the longer time can be used for precipitation. In order not to damage the precipitation result as much as possible, the rotating shaft 22 needs to rotate slowly. For this reason, the power end of the driving motor 2 is connected to a reducer 21, and the output end of the reducer 21 is connected to the rotating shaft 22. The rotating shaft 22 extends into the device body 1. In this way, the setting of the reducer 21 is used to ensure that the wastewater and waste slurry rotate slowly, thereby reducing the damage to the precipitation result.

[0023] Considering that the main objects in the wastewater and waste slurry are water and aggregates, for this reason, sedimentation can make the aggregates at the bottom. For this reason, in order to collect aggregates, in this embodiment, a layer plate 11 is arranged in the device body 1, and the layer plate 11 divides the inside of the device body 1 into two upper and lower chambers. In this way, the lower chamber is used to collect aggregates, and an overflow pipe is arranged on the side wall of the upper device body 1, and a discharge slot hole 111 is also arranged on the layer plate 11. The overflow pipe and the discharge slot hole 111 are adjacently arranged and correspond to different processing grids. The overflow pipe and the discharge slot hole 111 are arranged in sequence according to the clockwise rotation direction, and the overflow pipe and the discharge slot hole 111 are arranged at the longest rotation end, so that sufficient sedimentation time can be given. The overflow pipe is arranged mainly to process most of the water. Due to the effect of sedimentation, the water in the upper layer is relatively clean and contains less impurities. It can be directly coarsely filtered and the return water used for washing can be used again.

[0024] The wastewater and waste slurry with most of the water removed enter the lower chamber through the discharge slot 111. An auger conveyor 3 is arranged in the lower chamber. Specifically, an auger conveyor 3 is arranged below the discharge slot 111. In this embodiment, considering the use environment, in order to ensure the service life of the auger motor 34, the auger motor 34 is arranged outside the device body 1. At the same time, the conveying shaft 31 of the auger conveyor 3 extends out of the shell of the auger conveyor 3. At the same time, a driving gear 32 is installed at one end of the conveying shaft 31 of the auger conveyor 3 extending out of the auger conveyor 3. A screen drum 4 is arranged below the auger conveyor 3. One end of the screen drum 4 The meshing gear 41 is provided, and the meshing gear 41 is meshed with the driving gear 32. In this way, when the auger conveyor 3 rotates, the screen drum 4 is also driven to rotate, and the material receiving part of the screen drum 4 is arranged at the outlet of the auger conveyor 3. In this way, the aggregates transported by the auger conveyor 3 will enter the screen drum 4, and the wastewater, fine particles and aggregates are screened under the rotation screening of the screen drum 4. In order to facilitate the acquisition of fine particles and aggregates, the end of the screen drum 4 away from the meshing gear 41 penetrates the side wall of the device body 1, and the discharge cylinder 17 is arranged below the screen drum 4, and the discharge cylinder 17 penetrates the bottom of the device body 1. In this way, the fine particles are separated through the discharge cylinder 17, and the aggregates are separated through the other end of the screen drum 4.

[0025] In order to separate the wastewater and the fine particles, in this embodiment, a water outlet 33 is provided on the casing wall of the auger conveyor 3, so that the residual wastewater will directly leak down under the action of the water outlet 33. In order to facilitate the collection of the residual wastewater, a center plate 12 is provided in the lower chamber in the device body 1. The center plate 12 divides the lower chamber in the device body 1 into two left and right chambers. At the same time, the center plate 12 forms an end support for the auger conveyor 3 and the screen drum 4. In this embodiment, the auger conveyor 3 and the screen drum 4 are respectively located in the left and right chambers, that is, the length of the auger conveyor 3 and the screen drum 4 is approximately the length of the radius of the device body 1. At the same time, a water outlet pipe 16 matched with the water outlet 33 is provided at the bottom of the device body 1. In this way, the separation of wastewater, fine particles and aggregates is completed. Fine particles can be directly used in the production of concrete, and aggregates can be used for the production of concrete after proportioning, and wastewater can be treated by plate filtration before being used in the next step.

[0026] In order to reduce the water entering the lower chamber as much as possible, in this embodiment, the overflow pipe includes a first overflow pipe 14 and a second overflow pipe 15, and the first overflow pipe 14 and the second overflow pipe 15 are arranged in an upper and lower interval along the rotation direction of the partition 23, and the first overflow pipe 14 and the second overflow pipe 15 correspond to different processing grids. In this way, the water in the first overflow pipe 14 can be used directly, while the second overflow pipe 15 is determined according to the water quality, whether to filter the plate or re-enter the mixing station.

[0027] Considering that the use environment of the mixing station does not restrict smoking and other behaviors, this leads to a large amount of cigarette butts and other debris in the mixing station, and this type of debris will enter the device body 1. Due to its light weight, it will float. For this reason, the first overflow pipe 14 and the second overflow pipe 15 are both connected to the liquid separation pipe 5, and the liquid separation pipe 5 is provided with a filter screen 51. The filter screen 51 is tilted in the liquid separation pipe 5. The liquid separation pipe 5 is also connected to the impurity pipe 52. The pipe mouth of the impurity pipe 52 is arranged near the bottom of the liquid inlet direction of the filter screen 51, and the impurity pipe 52 is provided with a detachable cover 53 at one end away from the liquid separation pipe 5. In this way, by removing the cover 53 as needed, impurities can be collected, so that the overflow water does not contain such impurities as leaves, cigarette butts, and sticks.

[0028] Considering the classification of aggregates, in this embodiment, the filter screen 42 on the side wall of the screen drum 4 is arranged in at least two stages from the feed to the discharge direction. In this way, the aggregates can be divided into at least two categories, which is more convenient for subsequent use.

[0029] Through the above-mentioned arrangement, the problems of cleaning and storing the wastewater storage tank and the inability to use the pump for a long time are effectively solved. At the same time, the solution provided in this embodiment realizes effective classification, reduces the trouble of subsequent processing, and improves work efficiency.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A device for recycling wastewater and waste slurry from a ready-mixed concrete mixing station, characterized in that: The invention comprises a device body which is arranged in a cylindrical shape, wherein the device body is arranged below the ground, a driving motor is arranged on the top of the device body, a reducer is connected to the power end of the driving motor, a rotating shaft is connected to the output end of the reducer, the rotating shaft is extended into the device body, a layer plate is arranged in the device body, the layer plate divides the inside of the device body into two upper and lower chambers, a partition is arranged on the side wall of the rotating shaft, the partition is evenly distributed on the rotating shaft in an annular shape, the partition divides the upper chamber of the device body into a plurality of processing grids, and the top of the device body The device body is also provided with a wastewater and waste slurry pipe, which is extended into the device body, an overflow pipe is provided on the side wall of the device body, a discharge slot is also provided on the layer plate, the overflow pipe and the discharge slot are adjacent to each other and correspond to different processing grids, an auger conveyor is provided below the discharge slot, a conveying shaft of the auger conveyor extends out of the auger conveyor, a driving gear is provided at one end of the conveying shaft of the auger conveyor, a screen drum is provided below the auger conveyor, a meshing gear is provided at one end of the screen drum, and the meshing gear The gear is meshed with the driving gear, and the end of the screen drum away from the meshing gear passes through the side wall of the device body. A discharge cylinder is arranged below the screen drum, and the discharge cylinder passes through the bottom of the device body. A water outlet is arranged on the side wall of the auger conveyor. A center plate is arranged in the lower chamber of the device body, and the center plate divides the lower chamber in the device body into two left and right chambers. The center plate forms an end support for the auger conveyor and the screen drum. The auger conveyor and the screen drum are respectively located in the left and right chambers. The bottom of the device body is provided with The water outlet hole matches the water outlet pipe, and the overflow pipe includes a first overflow pipe and a second overflow pipe. The first overflow pipe and the second overflow pipe are arranged at intervals in the upper and lower directions along the rotation direction of the partition. The first overflow pipe and the second overflow pipe correspond to different processing grids respectively. The first overflow pipe and the second overflow pipe are both connected with a liquid separator. A filter is arranged in the liquid separator, and the filter is arranged obliquely in the liquid separator. The liquid separator is also connected with an impurity pipe, and the pipe mouth of the impurity pipe is arranged near the bottom of the filter in the liquid inlet direction, and a detachable cover is arranged at one end of the impurity pipe away from the liquid separator.

2. The wastewater and waste slurry recycling device for a ready-mixed concrete mixing station according to claim 1 is characterized in that: The filter screens on the side walls of the screen drum are arranged in at least two stages from the feeding direction to the discharging direction.

Images