CN210256750U - Waste recovery system of concrete mixing plant - Google Patents

Abstract

The utility model discloses a waste recovery system of a concrete mixing plant, which comprises a sand-stone separation device, a collection pool and a storage pool which are connected in sequence, wherein the output end of the sand-stone separation device is positioned in the collection pool, a communication port is arranged between the collection pool and the storage pool, a sealing plate for opening or closing the communication port is arranged on the communication port, an adjusting mechanism is arranged on one side of the sealing plate, the adjusting mechanism drives the sealing plate to move through gear and rack meshing transmission, and a fixing part for keeping the sealing plate in a closed state is also arranged on one side of the sealing plate; and a stirring device is arranged in the storage pool. The utility model discloses a waste recovery system is applicable to all concrete mixing plants, utilizes concrete waste water to form the moist pipe thick liquids of new, finally realizes zero pollution.

Description

Waste recovery system of concrete mixing plant

Technical Field

The utility model relates to a waste recycling technical field, in particular to concrete mixing plant waste recovery 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) firstly, a sand-stone separation device is used for separation, sand-stone is recycled after separation, and waste slurry is transported to a mixing station for dumping after precipitation, so that the treatment mode is high in cost and difficult to find dumping places, 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.

The utility model discloses a chinese utility model patent with publication number CN103663763B discloses a waste material waste water recovery system and utilize this system to carry out cyclic utilization's method, and this method subsides the processing with the waste thick liquid, and partly be used for the carwash of carwash canopy car washing usefulness, and another part uses as the relevant equipment cleaning equipment of stirring station and uses, and this method has the problem including: 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 recovery systems, utilize concrete waste material waste water to form the new moist pipe thick liquids, finally realize zero pollution.

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

a waste recovery system of a concrete mixing plant comprises a sand-stone separation device, a collection pool and a storage pool which are sequentially connected, wherein the output end of the sand-stone separation device is positioned in the collection pool, a communication port is formed between the collection pool and the storage pool, a sealing plate for opening or closing the communication port is arranged on the communication port, an adjusting mechanism is arranged on one side of the sealing plate, the adjusting mechanism drives the sealing plate to move through gear and rack meshing transmission, and a fixing piece for keeping the sealing plate in a closed state is further arranged on one side of the sealing plate; and a stirring device is arranged in the storage pool.

Through adopting above-mentioned technical scheme, waste recycling system's during operation, wash concrete mixing plant place and trucd mixer waste material and collect waste slurry with the water earlier, pass through grit separator with waste slurry and separate into waste slurry and large granule solid waste, solid waste then sieves into sand and stone cyclic utilization once more, waste slurry gets into the collecting pit, carry out preliminary clearance to waste slurry in the collecting pit, preliminary clearance is accomplished the back, through the gear, the rack cooperation orders about the closing plate and removes and open the intercommunication mouth, make waste slurry flow into in the storage tank, close the intercommunication mouth when waste slurry adds to required volume, then add the admixture in to the storage tank according to the proportion, start agitating unit and make admixture and waste slurry intensive mixing obtain the moist pipe thick liquids of product.

When the product is used, the product is extracted from the storage tank by using a tank car and then is conveyed to a construction site, and a delivery pump piston and the inner wall of a pipeline of a pump truck are fully lubricated to avoid the occurrence of pump blockage. The pipe moistening slurry prepared from the waste slurry can save pipe moistening cost economically and the cost generated by cleaning waste materials; 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 connecting opening is arranged on the wall of the collecting tank, an accommodating cavity is vertically formed in the bottom wall of the connecting opening, mounting grooves are formed in the two side walls of the connecting opening, the mounting grooves vertically penetrate through the connecting opening, and the lower end of each mounting groove is communicated with the accommodating cavity; the sealing plate is arranged in the accommodating cavity and the mounting groove in a sliding mode.

Through adopting above-mentioned technical scheme, the closing plate slides and sets up holding between chamber and two mounting grooves, and the mounting groove plays the effect of direction with the cooperation of closing plate tip, makes opening and close process of closing plate stable more gently.

The utility model discloses further set up to: the adjusting mechanism comprises a gear, a transmission rack and a driven rack, wherein the gear is rotatably arranged in the mounting groove, the transmission rack is slidably arranged in the mounting groove, the driven rack is fixedly arranged at the vertical end of the sealing plate, the axis of the gear is parallel to the communication direction of the communication port, the transmission rack and the driven rack are oppositely arranged on two sides of the gear and are meshed with the gear, and when the uppermost end of the driven rack is meshed with the gear, the gear is meshed with the lowermost end of the transmission rack.

By adopting the technical scheme, the weight of the sealing plate is greater than that of the transmission rack, the sealing plate drives the sealing plate to move downwards through self weight without being influenced by external force, the driven rack is driven to synchronously move while the sealing plate moves, and the transmission rack makes vertical and upward reverse motion simultaneously through meshing transmission of the gears and finally penetrates out of the mounting groove; the lower extreme of closing plate supports to press and stops on the diapire that holds the chamber, and the upper end of closing plate just is parallel and level with the diapire of intercommunication mouth this moment, and the intercommunication mouth is in the state of opening completely. When closing the intercommunication mouth, press the driving rack downwards, order to order about the closing plate and make vertical ascending reverse motion in step, wear out and hold the chamber and realize the closure of intercommunication mouth. So, make the closing plate seal the intercommunication mouth from supreme down, and open the swift convenience of process.

The utility model discloses further set up to: the mounting sets up in the end cover of drive rack upper end and sets up the fixed block on the end cover lateral wall perpendicularly including rotating, the counter sink has been seted up on the pool wall of collecting pit, the counter sink is located the mounting groove directly over, set up the fixed slot that is L type distribution on the inner wall of counter sink, the fixed slot includes along the portion of inserting that counter sink axis direction distributes and the fixed part that sets up perpendicularly with the portion of inserting, the upper end of counter sink is run through to the portion of inserting.

Through adopting above-mentioned technical scheme, when the drive rack falls back to the mounting groove completely, its upper end's end cover just is located the counter sink downthehole, and the end cover is embedded in the downthehole in-process of counter sink, aligns the position of fixed block and insertion portion earlier, and the fixed block passes through the insertion portion and moves to the inside of counter sink, and after the end cover got into the counter sink completely, the end cover rotated the fixed block and shifted into the inside of fixed part, misplaced with the insertion portion to realize the fixed to the drive rack, keep the closing plate in the state to the intercommunication mouth confined with this.

The utility model discloses further set up to: the end cover is provided with a concave cavity, an annular connecting groove is formed in the concave cavity, and the end part of the transmission rack is fixedly connected with a connecting ring which is matched with the end part of the transmission rack.

Through adopting above-mentioned technical scheme, the go-between is embedded in the spread groove, and both cooperations realize that the end cover is connected with the rotation of transmission rack.

The utility model discloses further set up to: the vertical spout that is provided with in the mounting groove, the last rigid coupling of drive rack has the slider with spout sliding fit.

Through adopting above-mentioned technical scheme, the slider slides and sets up in the spout, and both cooperations play the spacing effect of direction to the drive rack to this makes the drive rack slide the in-process more steadily smoothly under the upper and lower.

The utility model discloses further set up to: the end parts of the accommodating cavity, the mounting groove and the communication port are provided with sealing strips.

Through adopting above-mentioned technical scheme, the sealing strip makes the closing plate more compact with holding chamber and mounting groove complex, improves the closed effect of closing plate.

The utility model discloses further set up to: the diapire of intercommunication mouth and the diapire parallel and level of collecting pit, the diapire of collecting pit inclines towards the intercommunication mouth.

Through adopting above-mentioned technical scheme, the diapire of collecting pit inclines to the one end that is close to the intercommunication mouth from the one end that is close to grit separator to in discharging the storage pool with the useless thick liquid in the collecting pit.

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 large granule in the useless thick liquid, avoids the large granule to moist tub of influence of thick liquids lubricating property.

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.

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. the sealing plate which vertically slides is arranged on the communication opening, and the gear rack is used for driving the sealing plate to move, so that the moving process of the sealing plate is more stable and smooth;

4. the upper end of the transmission rack is rotatably connected with the end cover, the end cover is fixedly provided with the fixing block, and the fixing block is matched with the L-shaped fixing groove to fix the transmission rack, so that the fixing process of the sealing plate is quick and convenient.

Drawings

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

FIG. 2 is a schematic structural view of an adjusting mechanism in the embodiment;

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure, 1, a sand separation device; 2. a collection tank; 21. a communication port; 22. screening a screen; 23. an accommodating chamber; 24. mounting grooves; 241. a chute; 25. a countersunk hole; 26. fixing grooves; 261. an insertion portion; 262. a fixed part; 3. a storage pool; 4. a sealing plate; 5. an adjustment mechanism; 51. a gear; 52. a drive rack; 521. a slider; 53. a driven rack; 54. a connecting ring; 6. a fixing member; 61. an end cap; 62. a concave cavity; 63. connecting grooves; 64. a handle; 65. and (5) fixing blocks.

Detailed Description

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

Example (b): a waste recovery system of a concrete mixing plant is shown in figure 1 and comprises a sand-stone separation device 1 for separating waste into solid waste and waste slurry; the collecting tank 2 is used for collecting waste slurry produced after the sand-stone separating device 1 separates; and the storage pool 3 is used for processing the waste slurry to form a tube moistening slurry and storing the tube moistening slurry. The output end of the sand-stone separating device 1 is positioned above the collecting tank 2 and extends into the collecting tank 2; storage pool 3 sets up to three, sets up in one side of collecting pit 2 side by side, and collecting pit 2 and storage pool 3 are the open rectangle box body structure in top, and collecting pit 2 and storage pool 3 can be pour the shaping by concrete an organic whole.

The upper end of 2 inside walls of collecting pit is provided with the bevel angle structure, and the bevel angle structure conveniently clears out the showy debris in the useless thick liquid. The storage capacity of each storage pool 3 is standard and fixed, and standard lines are arranged on the walls of the storage pools 3 and used for prompting people about the storage capacity of the storage pools 3. A stirring device (not shown) is also installed in the storage tank 3.

Seted up a plurality of intercommunication mouths 21 on the pool wall of collecting pit 2, collecting pit 2 is linked together with every storage pool 3 respectively through intercommunication mouth 21, and the diapire of intercommunication mouth 21 and collecting pit 2's diapire parallel and level, and collecting pit 2's diapire from the one end that is close to grit separator 1 to the one end slope that is close to intercommunication mouth 21 to discharge the useless thick liquid in the collecting pit 2 into in the storage pool 3. A screen 22 is inserted into each communication port 21, and the aperture of the screen 22 is 8-12mm, so as to further filter large particles in the waste slurry and finish the primary cleaning of the waste slurry; each communication port 21 is also provided with a seal plate 4 for opening and closing the communication port, and the seal plate 4 is slidably disposed in the communication port 21.

As shown in fig. 2, vertical downwardly seted up on the diapire of intercommunication mouth 21 and held chamber 23, the inside shape and the closing plate 4 looks adaptation that hold chamber 23 have still seted up mounting groove 24 on the both sides wall of intercommunication mouth 21, and mounting groove 24 runs through the pool wall of collecting pit 2 along vertical direction, and its lower extreme is linked together with holding chamber 23, and the both ends of closing plate 4 stretch into in mounting groove 24, can stably slide along the direction of height in holding chamber 23.

An adjusting mechanism 5 for driving the sealing plate 4 to move in the height direction is arranged in one of the mounting grooves 24, and the adjusting mechanism 5 comprises a gear 51 rotatably arranged in the mounting groove 24, a transmission rack 52 slidably arranged in the mounting groove 24, and a driven rack 53 fixedly arranged at the vertical end of the sealing plate 4. The rotation axis of the gear 51 is parallel to the communication direction of the communication port 21, the gear 51 can rotate around the axis of the rotation axis, the driving rack 52 and the driven rack 53 are oppositely arranged on both sides of the gear 51 and meshed with the gear 51, and when the uppermost end of the driven rack 53 is meshed with the gear 51, the gear 51 is meshed with the lowermost end of the driving rack 52. The driving rack 52 can penetrate out of the upper end of the pool wall of the collecting pool 2 through the mounting groove 24.

The weight of the sealing plate 4 is greater than that of the transmission rack 52, the sealing plate 4 is driven by self weight to move downwards under the influence of no external force, the driven rack 53 is driven by the sealing plate 4 to move synchronously while the sealing plate 4 moves, and the transmission rack 52 makes vertical and upward reverse motion simultaneously through the meshing transmission of the gear 51 and finally penetrates out of the mounting groove 24; when the lower end of the sealing plate 4 abuts against the bottom wall of the accommodating chamber 23 and then stops, the upper end of the sealing plate 4 is just flush with the bottom wall of the communication port 21, and the communication port 21 is in a fully opened state. When the communication port 21 is closed, the transmission rack 52 is pressed downwards to drive the sealing plate 4 to synchronously perform vertical and upward reverse movement, and the sealing plate penetrates through the accommodating cavity 23 to seal the communication port 21. Accordingly, the wall of the collecting tank 2 is provided with a fixing member 6 for holding the sealing plate 4 in a closed state.

As shown in fig. 2 and 3, the fixing element 6 includes a cylindrical end cover 61, a concave cavity 62 is formed in a lower surface of the end cover 61, the end cover 61 is covered at the upper end of the transmission rack 52 through the concave cavity 62, an annular connection ring 54 is further disposed at the upper end of the transmission rack 52, an annular connection groove 63 is formed in an inner wall of the concave cavity 62, the connection ring 54 is embedded in the connection groove 63, and the end cover 61 and the transmission rack 52 are rotatably connected in cooperation with each other.

The upper end of the end cover 61 is provided with an embedded handle 64, two fixing blocks 65 which are oppositely arranged are formed on the side wall of the end cover 61 in a radially extending manner, the wall of the collecting tank 2 is provided with a counter bore 25 matched with the shape of the end cover 61, the counter bore 25 is positioned right above the mounting groove 24, fixing grooves 26 are respectively formed in opposite positions on the inner wall of the counter bore 25, the fixing grooves 26 are distributed in an L shape (refer to fig. 2), and the two fixing grooves 26 are symmetrical relative to the axis center of the counter bore 25. The fixing groove 26 includes an insertion portion 261 distributed along the axial direction of the counterbore 25 and a fixing portion 262 disposed perpendicular to the insertion portion 261, the fixing portion 262 having a shape matching the outer shape of the fixing block 65, and the insertion portion 261 penetrating the upper end of the counterbore 25.

When the transmission rack 52 completely falls back into the mounting groove 24, the end cover 61 at the upper end of the transmission rack is just positioned in the counter bore 25, the end cover 61 is embedded in the counter bore 25, the fixing block 65 is aligned with the insertion part 261, the fixing block 65 moves towards the inside of the counter bore 25 through the insertion part 261, after the end cover 61 completely enters the counter bore 25, the fixing block 65 is rotated into the inside of the fixing part 262 and dislocated with the insertion part 261 by rotating the end cover 61 through the handle 64, and therefore the transmission rack 52 is fixed, and the sealing plate 4 is kept in a state of sealing the communication opening 21.

Further, as shown in fig. 2, two sliding grooves 241 which are oppositely arranged are vertically formed in the mounting groove 24, two sliding blocks 521 are symmetrically arranged on two sides of the transmission rack 52, the sliding blocks 521 are slidably arranged in the sliding grooves 241, and the two sliding blocks are matched to play a role in guiding and limiting the transmission rack 52, so that the transmission rack 52 is more stable and smooth in the up-and-down sliding process. The end parts of the accommodating cavity 23 and the mounting groove 24 facing the communication port 21 are provided with sealing strips (not shown in the figure), so that the sealing plate 4 is more compact in matching with the accommodating cavity 23 and the mounting groove 24, and the sealing effect of the sealing plate 4 is improved.

The utility model discloses a waste recovery 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) separating the waste slurry into waste slurry and large-particle solid waste through a sand-stone separation device 1, screening the solid waste into sand and stones for recycling, and feeding the waste slurry into a collection pool 2 (at the moment, the waste slurry is homogeneous pasty liquid);

(3) the method comprises the following steps of (1) preliminarily cleaning waste slurry in a collecting tank 2, opening a communication port 21 after the preliminary cleaning is finished, enabling the waste slurry to flow into a corresponding storage tank 3, and closing the communication port 21 after the waste slurry is added to a standard amount;

(4) sampling and measuring the waste pulp in the storage pool 3, calculating the density of the waste pulp according to the relation between the volume V and the weight m, and calculating the concentration of the waste material according to the linear relation between the percentage concentration of the 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 this embodiment, a is 0.0076, and b is 0.9918.

(5) Calculating the concentration of the obtained waste slurry, blending the waste slurry until the concentration (solid content) of the waste slurry is 45-75 wt%, and then adding a corrosion inhibitor according to 2-10% of the weight of the 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 waste slurry concentration is greater than the set solid content percentage concentration (45 wt% -75 wt%), calculating the water adding amount according to V and m, then supplementing water according to calculation, adjusting the waste slurry concentration in the storage pool 3 to the set solid content percentage concentration (45 wt% -75 wt%), and stopping water supplementation; when the calculated waste pulp concentration is less than the set solid content percentage concentration (45 wt% -75 wt%), which is a case with low probability of actual occurrence, the waste pulp in the storage tank 3 is concentrated and treated until the waste pulp concentration is adjusted to the set solid content percentage concentration (45 wt% -75 wt%).

(6) Starting the stirring device to fully mix the corrosion inhibitor and the waste slurry to obtain the final product of the pipe 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 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 (10)

1. The utility model provides a concrete mixing plant waste recovery system which characterized in that: the sand-stone separation device comprises a sand-stone separation device (1), a collection pool (2) and a storage pool (3) which are sequentially connected, wherein the output end of the sand-stone separation device (1) is positioned in the collection pool (2), a communication port (21) is formed between the collection pool (2) and the storage pool (3), a sealing plate (4) for opening or closing the communication port (21) is arranged on the communication port (21), an adjusting mechanism (5) is arranged on one side of the sealing plate (4), the adjusting mechanism (5) drives the sealing plate (4) to move through gear (51) and rack meshing transmission, and a fixing piece (6) for keeping the sealing plate (4) in a closed state is further arranged on one side of the sealing plate (4); and a stirring device is arranged in the storage pool (3).

2. The concrete batching plant waste recovery system according to claim 1, wherein: the communication port (21) is arranged on the wall of the collecting tank (2), an accommodating cavity (23) is vertically formed in the bottom wall of the communication port (21), mounting grooves (24) are formed in the two side walls of the communication port (21), the mounting grooves (24) vertically penetrate through the communication port (21), and the lower end of each mounting groove (24) is communicated with the accommodating cavity (23); the sealing plate (4) is arranged in the accommodating cavity (23) and the mounting groove (24) in a sliding mode.

3. The concrete batching plant waste recovery system according to claim 2, wherein: the adjusting mechanism (5) comprises a gear (51) rotatably arranged in the mounting groove (24), a transmission rack (52) slidably arranged in the mounting groove (24) and a driven rack (53) fixedly arranged at the vertical end of the sealing plate (4), the axis of the gear (51) is parallel to the communication direction of the communication port (21), the transmission rack (52) and the driven rack (53) are oppositely arranged on two sides of the gear (51) and meshed with the gear (51), and when the uppermost end of the driven rack (53) is meshed with the gear (51), the gear (51) is meshed with the lowermost end of the transmission rack (52).

4. The concrete batching plant waste recovery system according to claim 3, wherein: fixing piece (6) set up in end cover (61) of transmission rack (52) upper end and fixed block (65) of perpendicular setting on end cover (61) lateral wall including rotating, counter sink (25) have been seted up on the pool wall of collecting pit (2), counter sink (25) are located mounting groove (24) directly over, set up fixed slot (26) that are L type distribution on the inner wall of counter sink (25), fixed slot (26) include insert portion (261) that distribute along counter sink (25) axis direction and fixed part (262) that set up perpendicularly with insert portion (261), insert portion (261) run through the upper end of counter sink (25).

5. The concrete batching plant waste recovery system according to claim 4, wherein: the end cover (61) is provided with a concave cavity (62), an annular connecting groove (63) is arranged in the concave cavity (62), and the end part of the transmission rack (52) is fixedly connected with a connecting ring (54) which is matched with the end part of the transmission rack.

6. The concrete batching plant waste recovery system according to claim 3, wherein: a sliding groove (241) is vertically arranged in the mounting groove (24), and a sliding block (521) matched with the sliding groove (241) in a sliding mode is fixedly connected to the transmission rack (52).

7. The concrete batching plant waste recovery system according to claim 2, wherein: and sealing strips are arranged at the end parts of the accommodating cavity (23) and the mounting groove (24) communicated with the communication port (21).

8. The concrete batching plant waste recovery system according to claim 1, wherein: the bottom wall of the communication opening (21) is flush with the bottom wall of the collecting tank (2), and the bottom wall of the collecting tank (2) inclines towards the communication opening (21).

9. The concrete batching plant waste recovery system according to claim 1, wherein: the communicating opening (21) is detachably connected with a screen (22).

10. The concrete batching plant waste recovery system according to claim 1, wherein: the upper end of the inner side wall of the collecting tank (2) is provided with a chamfer angle structure.

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