A complete set of equipment for overall recycling of cleaning wastewater from a mixer truck

Abstract

The present invention discloses a complete set of equipment for overall recovery of washing wastewater from a mixer truck, which relates to the technical field of wastewater recovery. The present invention includes a bracket, on the top of which a treatment tank is welded. The treatment tank is designed in a funnel shape. A plurality of groups of stepped openings are penetrated through the inner wall of the treatment tank. A variable step is hinged inside the stepped opening. A scraping assembly is installed inside the treatment tank, and two groups of step control assemblies are installed at the bottom of the treatment tank. The step control assemblies can drive the variable step to swing. Through the setting of the variable step, the step precipitation area can be adjusted according to the sewage concentration, so that the sedimentation tank can adapt to the changes of different sediment concentrations and maintain a stable sedimentation effect. At the same time, the variable step can automatically retract into the stepped opening to form an integral with the inner wall of the treatment tank. Coupled with the use of the scraping assembly, the precipitated slurry can be automatically pushed to the bottom of the sedimentation tank, which can further improve the treatment effect.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater recovery, and particularly to a complete set of equipment for overall recovery of mixer truck washing wastewater. Background Art

[0002] With the rapid development of the construction industry, mixer trucks, as the main tools for transporting concrete, are widely used in various construction projects. However, during the transportation process of mixer trucks, due to the fluidity and viscosity of concrete, the inside of the barrel and equipment often needs to be cleaned to avoid the solidification and fouling of concrete, which may affect subsequent use. Such cleaning operations usually generate a large amount of wastewater, which contains unreacted concrete components, sand and gravel particles, and chemical additives, etc., with relatively high solid substances and chemical components. If not properly treated and discharged, it will not only cause environmental pollution but also may lead to waste of water resources.

[0003] The solid particles such as residual concrete and mortar during the cleaning process of mixer trucks are the main components in the wastewater and have a relatively high concentration. Usually, a sedimentation tank is required for sedimentation first. In a Chinese patent (application number: CN202121650275.1), a complete set of equipment for overall recovery of mixer truck washing wastewater is disclosed, including a car wash platform. A guiding groove is arranged behind the car wash platform, a support frame is arranged on the lower end surface of the guiding groove, a connecting pipe is arranged at one end of the guiding groove away from the car wash platform, a sand and stone separator is fixedly installed at one end of the connecting pipe away from the guiding groove, a sand discharge port and a stone discharge port are respectively arranged on the front end surface of the sand and stone separator, drainage channels are arranged in front of the car wash platform and behind the guiding groove, a gravel stacking yard is arranged below the sand discharge port, and a stone stacking yard is arranged below the stone discharge port. Most of this patent and the prior art directly use a vertical tank body for sedimentation. Since the cleaning wastewater usually contains viscous mud and slurry, it increases the complexity of the wastewater fluidity, resulting in too low sedimentation efficiency and too long treatment time.

[0004] In a Chinese patent (application number: CN201520606715.1), there is a circulating sedimentation tank. This patent sets a partition wall with trapezoidal steps in the sedimentation tank, so that the impurities in the solution can be fully sedimented in the sedimentation tank, thereby depositing the impurities in the solution in the sedimentation tank to achieve the effect of improving the removal of impurities. Although it can improve the treatment efficiency, due to the relatively large viscosity of the sedimented mud, it is easy to stick to the steps, resulting in a greatly increased difficulty in subsequent treatment. At the same time, since the steps are fixed steps, the treatment range of this sedimentation tank is limited and it does not adapt to the changes in different sediment concentrations, and the sedimentation effect is limited. Summary of the Invention

[0005] The purpose of the present invention is: to solve the above problems, the present invention provides a complete set of equipment for overall recovery of mixer truck washing wastewater.

[0006] To achieve the above object, the present invention specifically adopts the following technical solutions:

[0007] A complete set of equipment for overall recovery of cleaning wastewater of a mixer truck, comprising a bracket, on the top of which a treatment tank is welded. The treatment tank is designed in a funnel shape. A plurality of sets of stepped openings are penetrated through the inner wall of the treatment tank. A variable step is hinged inside the stepped opening, and the variable step can swing in a sealed manner in the stepped opening. A plurality of sets of one-way nozzles are arranged on one side of the variable step located inside the treatment tank. A medicine tank is welded on the outside of the treatment tank, and the medicine tank is communicated with the one-way nozzles through a medicine pipe;

[0008] A scraping component is installed inside the treatment tank, and the scraping component can scrape the inner wall of the treatment tank. Two sets of step control components are installed at the bottom of the treatment tank, and the step control components can drive the variable step to swing.

[0009] Furthermore, a plurality of sets of guide grooves are opened on the inner walls on both sides of the treatment tank, and the plurality of sets of guide grooves are correspondingly designed with the variable step. The scraping component includes a plurality of triangular scrapers, and the triangular scrapers are slidably connected in the guide grooves. The plurality of triangular scrapers are connected by a sealing slide plate. The sealing slide plate is located outside the treatment tank, and the sealing slide plate can block the plurality of sets of guide grooves at the same time.

[0010] Furthermore, an outer guide frame is welded on the outside of the treatment tank, and the sealing slide plate is slidably connected in the outer guide frame in a sealed manner.

[0011] Furthermore, the scraping component further includes two sets of idlers rotatably installed on the outside of the treatment tank. An installation block is fixedly installed on the outside of the sealing slide plate. An elastic push rod is arranged on the outside of the installation block, and the idler can contact the elastic push rod. A top spring is arranged between the installation block and the outer guide frame.

[0012] Furthermore, a driving wheel and two driven wheels are rotatably installed on the outside of the treatment tank. The driving wheel is driven by a motor I. The two driven wheels are engaged on both sides of the driving wheel. A driving pulley is fixedly installed on the side of the driven wheel close to the treatment tank. A driven pulley is fixedly installed on the side of each of the two idlers close to the treatment tank. The driving pulley on the same side is in transmission connection with the driven pulley through a transmission belt.

[0013] Furthermore, a sealing elastic sheet is arranged on the side of the stepped opening located inside the treatment tank, and the sealing elastic sheet can block the stepped opening. The variable step is fixedly installed on the sealing elastic sheet. A plurality of sets of spray holes are penetrated through the sealing elastic sheet, and the one-way nozzle is inserted into the spray hole.

[0014] Further, the step control assembly includes a mounting frame fixedly installed at the bottom of the treatment tank. A linear slide rail module is installed on one side of the mounting frame close to the treatment tank. A first mounting plate is installed on the slider of the linear slide rail module. A slide rail is arranged on one side of the first mounting plate close to the treatment tank. A second mounting plate is slidably connected to the outside of the slide rail. A plurality of control wedge blocks are fixedly installed on one side of the second mounting plate close to the treatment tank. The control wedge blocks are located below the variable steps.

[0015] Further, a pneumatic cylinder is fixedly installed at the bottom end of the first mounting plate. The telescopic end of the pneumatic cylinder is communicated with the second mounting plate. The air outlet end of the pneumatic cylinder is communicated with the medicine tank through a trachea.

[0016] Further, a support spring is arranged between the second mounting plate and the first mounting plate. The elastic force of the support spring is greater than that of the sealing elastic sheet. A second motor is fixedly installed at the bottom of the treatment tank. A cam is fixedly installed at the output end of the second motor. The cam can abut against the second mounting plate.

[0017] Further, a sludge discharge port is opened at the bottom of the treatment tank. A valve plate is inserted into the sludge discharge port.

[0018] The beneficial effects of the present invention are as follows:

[0019] Through the setting of the variable steps, the present invention can adjust the step precipitation area according to the sewage concentration, enabling the sedimentation tank to adapt to the changes in different sediment concentrations and maintaining a stable sedimentation effect. At the same time, the variable steps can automatically retract into the step openings to form an integral body with the inner wall of the treatment tank. Coupled with the use of the scraping assembly, it can automatically push the precipitated slurry to the bottom of the sedimentation tank, further improving the treatment effect.

[0020] By arranging one-way nozzles on the variable steps, when adding flocculants, the variable steps drive the one-way nozzles to swing, so that the flocculants are swung and sprayed into the sewage. At the same time, the variable steps stir the sewage, enabling the flocculants to be fully dissolved in the sewage, with high treatment efficiency. Through the combined use of the step control assembly, it can automatically control the addition amount of flocculants according to the sewage concentration, with precise chemical agent control and cost savings.

[0021] Through the combined use of the scraping assembly and the variable steps, when the variable steps participate in sedimentation, the variable steps limit the scraping assembly. At this time, the scraping assembly generates vibrations, which can not only improve the sedimentation efficiency but also shake off the surface mud. When the variable steps retract, the scraping assembly can scrape the sedimentation surface of the variable steps to improve the retraction stability of the variable steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention Figure 1 ;

[0023] Figure 2 is a schematic diagram of the overall structure of the present invention Figure 2 ;

[0024] Figure 3 is an exploded view of the overall structure of the present invention;

[0025] Figure 4 is a schematic diagram of the structure of the treatment tank of the present invention;

[0026] Figure 5 is a schematic diagram of a partial cross-section of the step opening of the present invention;

[0027] Figure 6 is a schematic diagram of the structure of the scraping component of the present invention;

[0028] Figure 7 is a schematic diagram of the structure of the step control component of the present invention;

[0029] Figure 8 is an exploded view of the step control component of the present invention.

[0030] Reference numerals: 1, support; 2, treatment tank; 21, step opening; 22, sealing spring piece; 23, variable step; 24, one-way nozzle; 25, guide groove; 26, outer guide frame; 27, valve plate; 3, medicine tank; 4, scraping component; 41, triangular scraping plate; 42, sealing slide plate; 43, mounting block; 44, elastic lever; 45, top spring; 46, dial; 47, driving wheel; 48, driven wheel; 49, driving pulley; 410, driven pulley; 5, step control component; 51, mounting frame; 52, linear slide rail module; 53, first mounting plate; 54, slide rail; 55, second mounting plate; 56, control wedge block; 57, support spring; 58, air pump; 59, cam. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] Embodiment 1, as Figures 1 - 8 shown, a complete set of equipment for overall recovery of the cleaning wastewater of a mixer truck includes a support 1. A treatment tank 2 is welded to the top of the support 1. The treatment tank 2 is designed in a funnel shape. A plurality of groups of step openings 21 are penetrated through the inner wall of the treatment tank 2. A variable step 23 is hinged inside the step opening 21. The variable step 23 can swing in a sealed manner in the step opening 21. A plurality of groups of one-way nozzles 24 are opened on one side of the variable step 23 located inside the treatment tank 2. A medicine tank 3 is welded to the outside of the treatment tank 2. The medicine tank 3 is communicated with the one-way nozzles 24 through a medicine pipe;

[0033] Inside the treatment tank 2, a scraping component 4 is installed. The scraping component 4 can scrape the inner wall of the treatment tank 2. At the bottom of the treatment tank 2, two sets of step control components 5 are installed. The step control components 5 can drive the variable step 23 to swing.

[0034] Furthermore, a sludge discharge port is opened at the bottom of the treatment tank 2, and a valve plate 27 is inserted into the sludge discharge port.

[0035] The cleaning sewage of the mixer truck is discharged into the treatment tank 2. The sewage concentration is detected by a sensor, and the variable step 23 is controlled to swing towards the inside of the treatment tank 2 according to the sewage concentration. It should be noted that the sedimentation surface of the variable step 23 is arc-shaped. When the inclination angle of the inner wall of the treatment tank 2 is 45°, the initial angle of the upper surface of the variable step 23 is also 45°. When the upper surface of the variable step 23 swings to 90°, at this time, the effective sedimentation area of the variable step 23 is the largest. When it exceeds 90°, a part of the sedimentation surface is inclined downward, and this part cannot accumulate sediment for a long time. Therefore, by setting the inclination angle of the inner wall of the treatment tank 2, the adjustment range of the variable step 23 can be controlled, which can be customized according to user needs. The higher the sewage concentration, the greater the swing angle of the variable step 23 towards the inside of the treatment tank 2, and the higher the sedimentation efficiency.

[0036] Then, the variable step 23 is driven to swing reciprocally by the step control component 5. At the same time, the one-way nozzle 24 sprays the flocculant. Since the variable step 23 swings reciprocally, the flocculant is swung and sprayed into the sewage, and the variable step 23 stirs the sewage when it swings, so that the flocculant can be fully mixed in the sewage, further improving the treatment efficiency.

[0037] After sedimentation for a period of time, the variable step 23 is controlled to retract completely into the step opening 21. At this time, the scraping component 4 can push the mud downward. Through a multi-stage design, the scraping component 4 can push the mud downward from top to bottom in sequence, push the mud to the bottom of the sedimentation tank, and then the variable step 23 expands and resets, improving the treatment efficiency. At the same time, there is no need for manual treatment of the mud on the step surface. After opening the valve plate 27 to discharge the sedimented mud, the device can be used again.

[0038] Embodiment 2, on the basis of the above embodiment, further includes that a plurality of sets of guide grooves 25 are opened on the inner walls on both sides of the treatment tank 2. The plurality of sets of guide grooves 25 are designed corresponding to the variable step 23. The scraping component 4 includes a plurality of triangular scraping plates 41. The triangular scraping plates 41 are slidably connected in the guide grooves 25. The plurality of triangular scraping plates 41 are connected by a sealing slide plate 42. The sealing slide plate 42 is located outside the treatment tank 2, and the sealing slide plate 42 can block the plurality of sets of guide grooves 25 at the same time.

[0039] Furthermore, an outer guide frame 26 is welded on the outside of the treatment tank 2. The sealing slide plate 42 is hermetically slidably connected in the outer guide frame 26 to improve the sealing performance of the sealing slide plate 42.

[0040] After precipitation for a period of time, the variable step 23 is controlled to retract completely into the step opening 21. At this time, the sealing slide plate 42 is controlled to slide downward. The sealing slide plate 42 drives multiple groups of triangular scraping plates 41 to move downward simultaneously, pushing the mud downward. When the sealing slide plate 42 slides upward, the lower triangular scraping plate 41 picks up the mud produced by the upper level. When the triangular scraping plate 41 rises to the top and descends to the bottom, inertial forces will be generated, which can make the mud slide downward. As the sealing slide plate 42 reciprocates up and down, the mud can be pushed downward from top to bottom in sequence, and the mud is pushed to the bottom of the sedimentation tank, with good scraping effect.

[0041] During precipitation, the variable step 23 swings into the treatment tank 2. The variable step 23 blocks the triangular scraping plate 41. Therefore, when the sealing slide plate 42 slides up and down at this time, the triangular scraping plate 41 will strike on the variable step 23 to generate vibration. By applying vibration energy, the sedimentation speed of particles can be accelerated, thereby improving the sedimentation efficiency. At the same time, the triangular scraping plate 41 itself also serves as a sedimentation step, which can also improve sedimentation. Under the action of vibration, the mud deposited on its surface falls on the variable step 23, and the mud will not accumulate excessively on its surface.

[0042] Furthermore, when the variable step 23 retracts into the step opening 21, the bottom end of the triangular scraping plate 41 abuts against the sedimentation surface of the variable step 23, which can achieve the effect of scraping the surface of the variable step 23.

[0043] Embodiment 3, on the basis of the above embodiment, further includes that the scraping assembly 4 further includes two groups of idler wheels 46 rotatably installed outside the treatment tank 2. An installation block 43 is fixedly installed on the outside of the sealing slide plate 42. An elastic lever 44 is arranged on the outside of the installation block 43. The idler wheel 46 can be in contact with the elastic lever 44. A top spring 45 is arranged between the installation block 43 and the outer guide frame 26.

[0044] By controlling the rotation of the idler wheel 46, the idler wheel 46 drives the sealing slide plate 42 to slide downward through the elastic lever 44. When the idler wheel 46 disengages from the elastic lever 44, the top spring 45 pushes the sealing slide plate 42 to reset. By rotating the idler wheel 46, the sealing slide plate 42 can be driven to reciprocate.

[0045] It should be noted that when the variable step 23 reciprocates and swings during chemical dosing, the variable step 23 does not completely retract into the step opening 21. Therefore, when the variable step 23 swings, it still stably supports the triangular scraping plate 41. When the variable step 23 supports the triangular scraping plate 41, the triangular scraping plate 41 slides to the uppermost position and cannot slide upward continuously. Moreover, the triangular scraping plate 41 cannot swing downward under the support of the variable step 23. At this time, when the dial 46 rotates, it pushes the elastic lever 44 to swing. When the dial 46 moves away from the elastic lever 44, the elastic lever 44 vibrates under the action of elastic force. The elastic lever 44 causes the triangular scraping plate 41 to vibrate. After precipitation for a period of time, the variable step 23 completely retracts into the step opening 21, and the triangular scraping plate 41 can reciprocate up and down to push and scrape the slurry. Through the setting of this embodiment, the control of the triangular scraping plate 41 can be achieved most simply, with a simple structure and simple control.

[0046] Embodiment 4: On the basis of the above embodiment, it further includes that a set of driving wheels 47 and two sets of driven wheels 48 are rotatably installed on the outer side of the treatment tank 2. The driving wheel 47 is driven by a first motor. The two sets of driven wheels 48 are engaged on both sides of the driving wheel 47. On the side of the driven wheel 48 close to the treatment tank 2, a driving pulley 49 is fixedly installed. On the side of each of the two dials 46 close to the treatment tank 2, a driven pulley 410 is fixedly installed. The driving pulley 49 on the same side is in transmission connection with the driven pulley 410 through a transmission belt.

[0047] By controlling the first motor to be powered on, the first motor drives the driving wheel 47 to rotate. The driving wheel 47 drives the two sets of driven wheels 48 to rotate simultaneously. The two sets of driven wheels 48 drive the two sets of driving pulleys 49 to rotate simultaneously. The two sets of driving pulleys 49 respectively drive the two sets of driven pulleys 410 to rotate. The two sets of driven pulleys 410 respectively drive the two sets of dials 46 to rotate. Since the two sets of driven wheels 48 are engaged on both sides of the driving wheel 47, the two dials 46 on both sides rotate synchronously and in opposite directions, and the driving of the scraping assemblies 4 on both sides of the treatment tank 2 can be realized synchronously.

[0048] Embodiment 5: On the basis of the above embodiment, it further includes that a sealing elastic sheet 22 is arranged on one side of the step opening 21 inside the treatment tank 2. The sealing elastic sheet 22 can block the step opening 21. The variable step 23 is fixedly installed on the sealing elastic sheet 22. A plurality of spray holes are penetrated through the inside of the sealing elastic sheet 22. The one-way nozzles 24 are inserted into the spray holes.

[0049] Through the setting of the sealing elastic sheet 22, when the variable step 23 completely retracts into the step opening 21, the sealing elastic sheet 22 can be flush with the inner wall of the treatment tank 2, which can improve the sealing performance between the variable step 23 and the inner wall of the treatment tank 2.

[0050] Embodiment Six. On the basis of the above embodiments, it further includes that the step control component 5 comprises a mounting frame 51 fixedly installed at the bottom of the treatment tank 2. A linear slide rail module 52 is installed on one side of the mounting frame 51 close to the treatment tank 2. A first mounting plate 53 is installed on the slider of the linear slide rail module 52. A slide rail 54 is arranged on one side of the first mounting plate 53 close to the treatment tank 2. A second mounting plate 55 is slidably connected to the outside of the slide rail 54. A plurality of control wedge blocks 56 are fixedly installed on one side of the second mounting plate 55 close to the treatment tank 2. The control wedge blocks 56 are located below the variable step 23.

[0051] Control the operation of the linear slide rail module 52. The linear slide rail module 52 drives the first mounting plate 53 to rise. The first mounting plate 53 drives the second mounting plate 55 to rise. The second mounting plate 55 drives the plurality of control wedge blocks 56 to rise synchronously. The control wedge blocks 56 push the variable step 23 to swing towards the inside of the treatment tank 2 through its hypotenuse. When the control wedge blocks 56 descend, the sealing elastic sheet 22 pushes the variable step 23 to retract into the step opening 21 under the action of elasticity, completing the adjustment of the precipitation area of the variable step 23.

[0052] During drug addition, control the reciprocating sliding of the second mounting plate 55, and the reciprocating swing of the variable step 23 can be controlled. When the sliding stops, the second mounting plate 55 resets and the position of the variable step 23 remains unchanged.

[0053] Embodiment Seven. On the basis of the above embodiments, it further includes that an air pump 58 is fixedly installed at the bottom end of the first mounting plate 53. The telescopic end of the air pump 58 is communicated with the second mounting plate 55. The air outlet end of the air pump 58 is communicated with the medicine tank 3 through an air pipe.

[0054] During drug addition, control the reciprocating sliding of the second mounting plate 55, and the reciprocating swing of the variable step 23 can be controlled. The second mounting plate 55 pressurizes the medicine tank 3 through the air pump 58, so that the flocculant can be sprayed out through the one-way nozzle 24.

[0055] Embodiment Eight. On the basis of the above embodiments, it further includes that a support spring 57 is arranged between the second mounting plate 55 and the first mounting plate 53. The elasticity of the support spring 57 is greater than that of the sealing elastic sheet 22. A second motor is fixedly installed at the bottom of the treatment tank 2. A cam 59 is fixedly installed at the output end of the second motor. The cam 59 can abut against the second mounting plate 55.

[0056] Control the operation of the linear slide rail module 52. The linear slide rail module 52 drives the first mounting plate 53 to rise. The first mounting plate 53 drives the second mounting plate 55 to rise. The second mounting plate 55 drives multiple groups of control wedge blocks 56 to rise synchronously. Since the elastic force of the support spring 57 is greater than the elastic force of the sealing elastic sheet 22, the control wedge block 56 pushes the variable step 23 to swing into the treatment tank 2 through its hypotenuse. When the control wedge block 56 descends, the sealing elastic sheet 22 pushes the variable step 23 to retract into the step opening 21 under the action of the elastic force, completing the adjustment of the sedimentation area of the variable step 23. At the same time of the adjustment, the distance between the second mounting plate 55 and the cam 59 changes. The higher the sewage concentration, the larger the swing angle of the variable step 23 and the smaller the distance between the second mounting plate 55 and the cam 59. When dosing is required, control the operation of the second motor. The second motor drives the cam 59 to rotate. Under the action of the cam 59 and the support spring 57, the second mounting plate 55 reciprocates. The higher the sewage concentration, the larger the reciprocating sliding distance of the second mounting plate 55 and the more air pressure generated by the air pump 58 per unit time. Therefore, the dosing amount can be increased. So through the setting of this embodiment, it is possible to complete the control of the dosing amount while adjusting the sedimentation area of the variable step 23, making the two adjust synchronously in direct proportion, without the need to additionally control the dosing system, with a simple structure and convenient use.

[0057] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A complete set of equipment for recycling wastewater from washing a mixer truck, comprising a bracket (1), characterized in that: A treatment pool (2) is welded to the top of the support (1), the treatment pool (2) is designed in a funnel shape, a plurality of step openings (21) are provided through the inner wall of the treatment pool (2), a variable step (23) is hinged inside the step opening (21), the variable step (23) can be sealed and swung in the step opening (21), a plurality of one-way nozzles (24) are provided on one side of the variable step (23) located inside the treatment pool (2), a medicine tank (3) is welded to the outside of the treatment pool (2), the medicine tank (3) is connected to the one-way nozzle (24) through a medicine tube; A push-scrape assembly (4) is installed inside the treatment pool (2), and the push-scrape assembly (4) can push and scrape the inner wall of the treatment pool (2). Two sets of step control assemblies (5) are installed at the bottom of the treatment pool (2), and the step control assemblies (5) can drive the variable step (23) to swing; The inner walls of both sides of the treatment pool (2) are provided with a plurality of guide grooves (25), the plurality of guide grooves (25) being designed corresponding to the variable steps (23), the push-scraping assembly (4) comprising a plurality of triangular scrapers (41), the triangular scrapers (41) being slidably connected in the guide grooves (25), the plurality of triangular scrapers (41) being connected via a sealing slide plate (42), the sealing slide plate (42) being located outside the treatment pool (2), and the sealing slide plate (42) being capable of simultaneously blocking the plurality of guide grooves (25).

2. A complete set of equipment for recycling wastewater from truck mixer washing according to claim 1, characterized in that: An outer guide frame (26) is welded to the outer side of the treatment pool (2), and the sealing slide plate (42) is sealingly slidably connected in the outer guide frame (26).

3. A complete set of equipment for recycling wastewater from truck mixer washing according to claim 2, characterized in that: The push-scrape assembly (4) further comprises two groups of thumbwheels (46) rotatably mounted on the outside of the treatment pool (2); a mounting block (43) is fixedly mounted on the outside of the sealing slide plate (42); an elastic lever (44) is arranged on the outside of the mounting block (43); the thumbwheel (46) can contact the elastic lever (44); and a top spring (45) is arranged between the mounting block (43) and the outer guide frame (26).

4. A complete set of equipment for recycling wastewater from truck mixer washing according to claim 3, characterized in that: A group of driving wheels (47) and two groups of driven wheels (48) are rotatably mounted on the outer side of the treatment pool (2); the driving wheel (47) is driven by a motor 1; the two groups of driven wheels (48) are meshed on both sides of the driving wheel (47); a driving pulley (49) is fixedly mounted on the side of the driven wheel (48) close to the treatment pool (2); and driven pulleys (410) are fixedly mounted on the sides of the two groups of thumbwheels (46) close to the treatment pool (2); and the driving pulley (49) on the same side is connected to the driven pulley (410) through a transmission belt.

5. The complete set of equipment for recycling wastewater from truck mixer washing according to claim 1 is characterized in that: A sealing spring (22) is provided on one side of the step opening (21) located inside the treatment pool (2), and the sealing spring (22) can seal the step opening (21). The variable step (23) is fixedly mounted on the sealing spring (22). A plurality of groups of spray holes are formed through the inside of the sealing spring (22), and the one-way nozzles (24) are inserted into the spray holes.

6. A complete set of equipment for recycling wastewater from truck mixer washing according to claim 5, characterized in that: The step control assembly (5) comprises a mounting frame (51) fixedly mounted on the bottom of the treatment tank (2); a linear slide rail module (52) is mounted on a side of the mounting frame (51) close to the treatment tank (2); a mounting plate 1 (53) is mounted on a slider of the linear slide rail module (52); a slide rail (54) is arranged on a side of the mounting plate 1 (53) close to the treatment tank (2); a mounting plate 2 (55) is slidably connected to the outer side of the slide rail (54); a plurality of control wedge blocks (56) are fixedly mounted on a side of the mounting plate 2 (55) close to the treatment tank (2); and the control wedge blocks (56) are located below the variable step (23).

7. A complete set of equipment for recycling wastewater from truck mixer washing according to claim 6, characterized in that: An air pump (58) is fixedly mounted on the bottom end of the first mounting plate (53); the telescopic end of the air pump (58) is connected to the second mounting plate (55); and the air outlet end of the air pump (58) is connected to the medicine tank (3) via an air pipe.

8. The complete set of equipment for recycling wastewater from truck mixer washing according to claim 7 is characterized in that: A support spring (57) is provided between the second mounting plate (55) and the first mounting plate (53), the elastic force of the support spring (57) being greater than the elastic force of the sealing spring (22), a second motor is fixedly mounted on the bottom of the treatment pool (2), a cam (59) is fixedly mounted on the output end of the second motor, and the cam (59) can contact the second mounting plate (55).

9. A complete set of equipment for recycling wastewater from truck mixer washing according to any one of claims 1 to 8, characterized in that: A mud discharge port is provided at the bottom of the treatment pool (2), and a valve plate (27) is inserted into the mud discharge port.

Images