Device and method for cleaning wound surface of post-cast strip of concrete beam column

Abstract

The invention provides a concrete beam column post-cast strip wound surface cleaning device and method. The device comprises a detergent storage box; the rotary nozzle is communicated with the detergent storage box; a waste liquid collector; the waste liquid storage box is communicated with the waste liquid collector, so that the cleaning liquid collected in the waste liquid collector flows back to the waste liquid storage box; a PH value online detector; the neutralizing reagent storage box is communicated with the waste liquid storage box, and a control valve is arranged on a pipeline for communicating the neutralizing reagent storage box with the waste liquid storage box; and the controller is connected with the PH value online detector. Pollutants such as oil stains, fat, pigments or other chemical substances on concrete wounds can be effectively cleaned, and local environment pollution of buildings, accidental corrosion and burn of skin of operators and influence on adhesion of concrete before and after the concrete is not cleaned in place are avoided to a great extent; and the PH value online detector is mounted on the waste liquid storage box, so that the PH value of the acidic cleaning waste liquid in the waste liquid storage box can be detected in real time.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, and in particular to a cleaning device and method for a wound surface of a post-cast zone of a concrete beam or column. Background Art

[0002] Before pouring the concrete post-cast strip, the concrete surface needs to be cleaned. In the post-cast strips of concrete beams and walls of industrial buildings or civil buildings, it is generally necessary to start pouring the settlement post-cast strips 28 days after the main project is completed; the shrinkage post-cast strips can be poured 60 days after the concrete on both sides is formed. The time for replenishing concrete in the post-cast strip is not less than 14 days in some regulations, not less than 42 days in some regulations, and not less than 60 days in some regulations (the specific time is determined in combination with relevant specifications). Since the construction time of the post-cast strip is relatively long compared to that of other parts, other processes may cause pollution, oil, fat, pigment or other chemical substances to drip at the interface of the post-cast strip unintentionally or for other special reasons during normal construction. For example, applying release agent to the formwork, applying rust remover to the steel bars, and professionally applying positioning marks to the foundation slab or support beam measurement will cause a certain degree of pollution.

[0003] For wounds that are difficult to clean, the traditional method is to use a brush or a simple spray bottle to spray on the concrete interface of the post-cast strip to achieve the cleaning purpose; if cleaning agents or acidic solutions are used for special pollution treatment and cleaning, this can easily cause local environmental pollution in locations such as the post-cast strip and accidental corrosion and burns to the skin of workers, and even inadequate cleaning of the post-cast strip may affect the adhesion between the front and back of the concrete, causing cracks, so that the actual function of the building's post-cast strip and the overall aesthetics of the building's appearance cannot be achieved. Summary of the invention

[0004] In view of this, the present invention proposes a cleaning device and method for the wound surface of the post-cast strip of concrete beams and columns, aiming to solve the problems of local environmental pollution in existing buildings, accidental corrosion and burns of the skin by workers, and inadequate cleaning that affects the adhesion of the front and back of concrete in the later stage.

[0005] On the one hand, the present invention proposes a cleaning device for the wound surface of the post-casting strip of concrete beams and columns, and the cleaning device comprises: a detergent storage box for storing detergent; a rotating nozzle, which is connected to the detergent storage box and is used to spray the detergent in the detergent storage box onto the wound surface of the post-casting strip of concrete beams and columns, so as to spray and clean the wound surface of the post-casting strip of concrete beams and columns; a waste liquid collector, which is used to be arranged at the bottom of the wound surface of the post-casting strip of concrete beams and columns to collect the cleaning liquid; a waste liquid storage box, which is connected to the waste liquid collector, so that the cleaning liquid collected in the waste liquid collector can flow back into the waste liquid storage box; wherein, the waste liquid storage box is provided with a drain port, and a waste liquid drain valve is provided at the drain port; a pH value online detector, which is used to detect and obtain the pH value of the liquid in the waste liquid storage box; a neutralizing agent storage box, It is connected to the waste liquid storage tank, and a control valve is provided on the pipeline connecting the two, which is used to control the connection and disconnection between the neutralization reagent storage tank and the waste liquid storage tank, so as to control the amount of neutralization reagent injected from the neutralization reagent storage tank into the waste liquid storage tank, so as to neutralize the waste liquid in the waste liquid storage tank; a controller is connected to the pH value online detector, which is used to receive the pH value of the liquid in the waste liquid storage tank obtained by the pH value online detector, and control the control valve based on the pH value of the liquid in the waste liquid storage tank, so as to control the opening and closing of the control valve, so as to neutralize the waste liquid in the waste liquid storage tank by the injected neutralization reagent, until the pH value of the liquid in the waste liquid storage tank obtained by the pH value online detector is 7, and then the waste liquid drain valve is controlled to open to discharge the waste liquid in the waste liquid storage tank.

[0006] Furthermore, in the above-mentioned cleaning device for the wound surface of the post-cast zone of concrete beams and columns, the control valve is a solenoid valve.

[0007] Furthermore, in the above-mentioned cleaning device for the wound surface of the post-cast strip of concrete beams and columns, the controller is connected to a normally open contact, and the normally open contact is connected in series with the control valve. When the pH value of the liquid in the waste liquid storage tank obtained by the pH value online detector is greater than 7, the controller controls the normally open contact to close, and the control valve is powered to open the valve body, so that the solution in the neutralization reagent solution tank is injected into the waste liquid storage tank; when the pH value of the liquid in the waste liquid storage tank obtained by the pH value online detector is equal to 7, the controller controls the normally open contact to disconnect, and the control valve loses power to close the valve body, so as to disconnect the connecting pipeline between the neutralization reagent solution tank and the waste liquid storage tank.

[0008] Furthermore, the above-mentioned cleaning device for the wound surface of the post-cast strip of concrete beams and columns also includes: a storage cabinet; wherein the top of the storage cabinet is provided with a first storage area for storing connecting pipes, movable hanging plates and waste liquid collectors; the middle of the storage cabinet has a second storage area and a third storage area for storing a neutralizing reagent storage box, a rotating nozzle and a booster pump respectively; the bottom of the storage cabinet has a fourth storage area and a fifth storage area arranged side by side in a horizontal direction for storing a waste liquid storage box and a detergent storage box respectively.

[0009] Furthermore, in the above-mentioned cleaning device for the wound surface of the post-cast band of concrete beams and columns, the detergent storage box is connected to a booster pump for pumping the detergent in the detergent storage box into the rotating nozzle.

[0010] Furthermore, in the above-mentioned cleaning device for the wound surface of the post-cast strip of concrete beams and columns, the waste liquid collector is hung on the wound surface of the post-cast strip of concrete beams and columns through a movable hanging plate.

[0011] Furthermore, in the above-mentioned cleaning device for the wound surface of the post-cast band of concrete beams and columns, the top of the detergent storage box is provided with a detergent solution filling port; the top of the neutralizing reagent solution box is provided with a reagent solution filling port.

[0012] Furthermore, in the above-mentioned cleaning device for the wound surface of the post-cast strip of concrete beams and columns, the waste liquid collector is provided with an inclined guide collecting plate for guiding the collected cleaning liquid to flow back into the waste liquid storage box.

[0013] Furthermore, in the above-mentioned cleaning device for the wound surface of the post-cast strip of concrete beams and columns, the pH value online detector is provided with a corrosion-resistant polytetrafluoroethylene electrode measurement sensor, which is used to be inserted into the waste liquid storage box to detect the pH value of the liquid in the waste liquid storage box.

[0014] On the other hand, the present invention proposes a method for cleaning the wound surface of the post-cast joint of concrete beams and columns, and the cleaning method includes the following steps: spraying and cleaning the wound surface of the post-cast joint of concrete beams and columns through a rotating nozzle; collecting the cleaning liquid through a waste liquid collector, and directing the cleaning liquid back into a waste liquid storage tank; injecting a neutralizing agent into the waste liquid storage tank to neutralize the cleaning waste liquid in the waste liquid storage tank until the liquid in the waste liquid storage tank is neutral, and discharging the liquid in the waste liquid storage tank.

[0015] The cleaning device and method for the wound surface of the post-cast strip of concrete beams and columns provided by the present invention can effectively clean pollutants such as oil, fat, pigment or other chemical substances on the concrete wound surface, and largely avoid local environmental pollution of the building and accidental corrosion and burns of the skin of operators, as well as inadequate cleaning that affects the front and back adhesion of the concrete in the later stage. In addition, an online pH value detector is installed on the waste liquid storage box, which can detect the pH value of the acidic cleaning waste liquid in the waste liquid box at all times. When the liquid level in the waste liquid box reaches half, the online pH value detector can be turned on, and the opening and closing of the control valve can be controlled by a controller to allow the neutralizing reagent in the neutralizing reagent storage box to flow into the waste liquid storage box until the pH value reaches "7" and is discharged after meeting the national environmental protection emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 A schematic diagram of the structure of a cleaning device for a wound surface of a post-cast belt of a concrete beam or column provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of the power supply and solenoid valve control of the cleaning device for the wound surface of the post-cast belt of concrete beams and columns provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a storage cabinet provided in an embodiment of the present invention; Figure 4 A flowchart of a method for cleaning a wound surface of a post-cast zone of a concrete beam or column provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to be able to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] Device Example: See also Figure 1, which is the preferred structure of the cleaning device for the wound surface of the post-casting belt of concrete beams and columns provided by the embodiment of the present invention. As shown in the figure, the device includes: a detergent storage box 1, a rotating nozzle 2, a waste liquid collector 3, a waste liquid storage box 4, a pH value online detector 5, a neutralizing agent storage box 6, a controller and a storage cabinet; wherein, The detergent storage box 1 is used to store detergent. Specifically, the detergent storage box can store detergent as a cleaning liquid, and spray the wound surface 7 of the concrete beam-column post-casting strip as a clear surface. The detergent storage box can be connected to a booster pump 8, which is used to pump the detergent in the detergent storage box 1 into the rotating nozzle 2, so as to perform rotary spraying through the rotating nozzle 2. A detergent solution filling port 11 is provided on the top of the detergent storage box 1, and detergent can be added to the detergent storage box 1. A first liquid level detector can be provided in the detergent storage box 1, which is used to detect the liquid level of the detergent in the detergent storage box 1; the first liquid level detector can be connected to a warning device or an alarm, so as to warn or alarm when the liquid level of the detergent in the detergent storage box 1 is less than or equal to the first preset liquid level, so as to prompt the staff to add detergent.

[0019] The rotating nozzle 2 is connected to the detergent storage box 1 and is used to spray the detergent in the detergent storage box 1 onto the wound surface 7 of the concrete beam and column post-casting strip, so as to spray and clean the wound surface 7 of the concrete beam and column post-casting strip. Specifically, the rotating nozzle 2 can be placed on the left side of the wound surface 7 of the concrete beam and column post-casting strip (relative to the left side of the concrete beam and column post-casting strip). Figure 1 As for the position shown in the figure), the rotating nozzle 2 can be an automatic rotating nozzle, which can rotate automatically. After the booster pump 8 is turned on, under the action of the booster pump 8, the detergent in the detergent storage box 1 is pumped into the rotating nozzle 2, and the rotating nozzle rotates automatically. The rotating nozzle 2 will spray and clean the wound surface 7 of the concrete beam and column post-casting strip without dead angles within a range of 90 degrees. In this embodiment, the rotating nozzle 2 is a plug-in type rotating nozzle, which is installed on the movable hanging plate 9 in a pluggable manner. The movable hanging plate 9 can be overlapped on the wound surface 7 of the concrete beam and column post-casting strip. The movable hanging plate 9 can be a detachable movable hanging plate. Before cleaning, the movable hanging plate 9 can be overlapped on the wound surface 7 of the concrete beam and column post-casting strip, and the rotating nozzle 2 can be fixed on the movable hanging plate 9, and placed on the left side of the movable hanging plate 9 facing the wound surface 7 of the concrete beam and column post-casting strip, so as to fix the rotating nozzle 2. Among them, the movable hanging plate 9 can be a U-shaped plate structure, which can be directly overlapped on the concrete beam and column with a square cross-section structure to support and fix the rotating nozzle 2. In this embodiment, the rotating nozzle 2 and the detergent storage box 1 can be detachably connected via a hose 10, which can facilitate the storage of various components.

[0020] The waste liquid collector 3 is used to be arranged at the bottom of the wound surface 7 of the concrete beam and column post-casting strip to collect the cleaning liquid. Specifically, the waste liquid collector 3 can be fixedly installed at the bottom of the movable hanging plate 9, located below the wound surface 7 of the concrete beam and column post-casting strip, and can collect the acidic cleaning waste liquid formed after the detergent sprayed by the rotating nozzle 2 sprays and cleans the wound surface 7 of the concrete beam and column post-casting strip, so that the acidic cleaning waste liquid flows downstream to the waste liquid collector 3, and flows downstream along the waste liquid collector 3 to the waste liquid storage tank 4. Among them, the waste liquid collector 3 is provided with an inclined guide collection plate 31, which is used to guide the collected cleaning liquid so that it flows back to the waste liquid storage tank 4. Among them, the waste liquid collector 3 can be hung on the wound surface 7 of the concrete beam and column post-casting strip through the movable hanging plate 9, that is, the waste liquid collector 3 can be fixedly installed at the bottom of the movable hanging plate 9.

[0021] The waste liquid storage tank 4 is connected to the waste liquid collector 3 so that the cleaning liquid collected in the waste liquid collector 3 can flow back into the waste liquid storage tank 4; wherein, the waste liquid storage tank 4 is provided with a drain port 41, and a waste liquid drain valve 42 is provided at the drain port 41. Specifically, the top of the waste liquid storage tank 4 can be open so that the acidic cleaning waste liquid guided from the waste liquid collector 3 can flow along the waste liquid collector 3 to the waste liquid storage tank 4. In this embodiment, a second liquid level detector can be provided in the waste liquid storage tank 4 to detect the liquid level of the waste liquid in the waste liquid storage tank 4; the second liquid level detector can be connected to a warning device or an alarm to warn or alarm when the liquid level of the waste liquid in the waste liquid storage tank 4 is greater than or equal to the second preset liquid level. Of course, the waste liquid storage tank 4 can also be connected to the controller, and is used to control the booster pump 8 to close when the liquid level of the waste liquid in the waste liquid storage tank 4 is greater than or equal to the second preset liquid level, so as to avoid the liquid level in the waste liquid storage tank 4 from overflowing; and when the liquid level of the waste liquid in the waste liquid storage tank 4 is greater than or equal to the second preset liquid level, and the pH value of the liquid in the waste liquid storage tank is greater than 7, the neutralizing reagent storage tank 6 can be controlled to inject a neutralizing reagent into the waste liquid storage tank 4 to neutralize the waste liquid cleaning agent, and then discharge the waste liquid cleaning agent when it meets the safety and environmental protection requirements. In this embodiment, a drain port 41 is provided at the bottom of the waste liquid storage tank 4, and a waste liquid drain valve 42 is provided at the drain port 41 to control the opening and closing of the drain port 41. Among them, the second preset liquid level can be half the height of the internal height of the waste liquid storage tank 4.

[0022] The pH value online detector 5 is used to detect the pH value of the liquid in the waste liquid storage tank 4. Specifically, the pH value online detector 5 is provided with a corrosion-resistant polytetrafluoroethylene electrode measurement sensor 51, which is inserted into the waste liquid storage tank 4 to detect the pH value of the liquid in the waste liquid storage tank 4.

[0023] The neutralization reagent storage box 6 is connected to the waste liquid storage box 4, and a control valve 61 is provided on the pipeline connecting the two, which is used to control the connection between the neutralization reagent storage box 6 and the waste liquid storage box 4, so as to control the amount of neutralization reagent injected into the waste liquid storage box 4 by the neutralization reagent storage box 6, so as to neutralize the waste liquid in the waste liquid storage box 4. Specifically, the neutralization reagent can be an alkaline reagent such as a sodium hydroxide reagent solution, or other reagent solutions, which are not limited in this embodiment. The neutralization reagent storage box 6 and the waste liquid storage box 4 can be connected through a hose, and a control valve is provided on the hose. The control valve can be a solenoid valve, or other valve bodies, which are not limited in this embodiment. In this embodiment, a reagent solution filling port 62 is provided on the top of the neutralization reagent storage box 6, and a neutralization reagent solution can be filled into the neutralization reagent storage box 6. Among them, a third liquid level detector may be provided in the neutralization reagent storage box 6, which is used to detect the liquid level of the reagent solution in the neutralization reagent storage box 6; the third liquid level detector may be connected to a warning device or an alarm to warn or alarm when the liquid level of the reagent solution in the neutralization reagent storage box 6 is less than or equal to the third preset liquid level, so as to prompt the staff to add the reagent solution.

[0024] The controller (not shown in the figure) is connected to the pH value online detector 5, and is used to receive the pH value of the liquid in the waste liquid storage tank 4 obtained by the pH value online detector 5, and control the control valve based on the pH value of the liquid in the waste liquid storage tank 4 to control the opening and closing of the control valve 61, so as to neutralize the waste liquid in the waste liquid storage tank 4 by the injected neutralizing agent, until the pH value of the liquid in the waste liquid storage tank 4 obtained by the pH value online detector is 7, and then control the waste liquid drain valve 42 to open and discharge the waste liquid in the waste liquid storage tank 4. Specifically, when the pH value of the liquid in the waste liquid storage tank 4 is greater than "7", the controller controls the control valve 61 to open, so as to inject the neutralizing agent into the waste liquid storage tank 4 to neutralize the waste liquid in the waste liquid storage tank 4, until the pH value of the liquid in the waste liquid storage tank 4 obtained by the pH value online detector is 7, the control valve 61 is controlled to close, the injection of the neutralizing agent is stopped, and the waste liquid drain valve 42 is controlled to open and discharge the waste liquid in the waste liquid storage tank 4.

[0025] See also Figure 2, which is a structural principle diagram of power supply and electromagnetic valve control of the cleaning device for the wound surface of the post-casting band of concrete beams and columns provided by an embodiment of the present invention. As shown in the figure, the controller may be connected to a normally open contact 52, and the normally open contact 52 is connected in series with the control valve 62. When the pH value of the liquid in the waste liquid storage tank obtained by the pH value online detector 5 is greater than 7, the controller controls the normally open contact 52 to close, and the control valve 62 is powered to open the valve body, so that the solution in the neutralizing reagent solution tank 6 is injected into the waste liquid storage tank 4; when the pH value of the liquid in the waste liquid storage tank 4 obtained by the pH value online detector 5 is equal to 7, the controller controls the normally open contact 52 to disconnect, and the control valve 62 loses power to close the valve body, so as to disconnect the connecting pipeline between the neutralizing reagent solution tank 6 and the waste liquid storage tank 4. Specifically, the pH range value "7" sets the parameter to the pH online detector 5. When the pH value is greater than "7", the normally open contact 52 connected to the pH online detector 5 is closed, and the control valve 62 is powered to open the valve body. When the pH value is equal to "7", the normally open contact 52 connected to the pH online detector 5 is disconnected, and the control valve 62 loses power to close the valve body. Among them, terminals L and N can be connected to the mains to supply power through the 220V mains; the normally open contact 52 and the control valve 62 can be connected in series to terminals L3 and N3 to form a control loop. The pH online detector 5 can be connected to terminals L2 and N2, and the booster pump 8 can be connected to terminals L1 and N1 to power the pH online detector 5 and the booster pump 8. In this embodiment, the normally open contact 52 can be set on the back of the pH online detector 5, and can be switched between closed and open based on the pH value obtained by the pH online detector 5.

[0026] See also Figure 3 , which is a schematic diagram of the structure of the storage cabinet provided by an embodiment of the present invention. As shown in the figure, the top of the storage cabinet 10 is provided with a first storage area 101 for storing connecting pipes, movable hanging boards and waste liquid collectors; the middle of the storage cabinet 10 is provided with a second storage area 102 and a third storage area 103 for storing a neutralizing reagent storage box, a rotating nozzle and a booster pump respectively; the bottom of the storage cabinet is provided with a fourth storage area 104 and a fifth storage area 105 arranged side by side in a horizontal direction for storing a waste liquid storage box and a detergent storage box respectively.

[0027] Specifically, the storage cabinet 10 can be divided from top to bottom by a partition to form three major parts: the top, the middle and the bottom. The top is used as the first storage area 101 for storing connecting pipes, movable hanging boards 9 and waste liquid collectors 3. The middle part of the storage cabinet 10 can be divided into two areas by a partition, one is a small rectangular area in the lower left corner, which is used as the second storage area 102 to store the neutralization reagent storage box 6, and the other area can be used as the third storage area 103 to store the booster pump 8 and the rotating nozzle 2. The rotating nozzle 2 can be freely and flexibly plugged in or taken out of the cabinet for assembly on site. The bottom of the storage cabinet 10 can be divided into two left and right areas by vertically arranged partitions, namely the fourth storage area 104 and the fifth storage area 105. The fourth storage area 104 can store the waste liquid storage box 4, and the fifth storage area 105 on the right can store the detergent storage box 1.

[0028] In summary, the cleaning device for the wound surface of the post-cast strip of concrete beams and columns provided in this embodiment can effectively clean the pollutants such as oil, fat, pigment or other chemicals on the concrete wound surface, and to a large extent avoid the local environmental pollution of the building and the accidental corrosion and burns of the skin by the workers, as well as the influence of the front and back adhesion of the concrete in the later stage due to inadequate cleaning. In addition, an online pH value detector is installed on the waste liquid storage tank, which can detect the pH value of the acidic cleaning waste liquid in the waste liquid tank at any time. When the liquid level in the waste liquid tank reaches half, the online pH value detector can be turned on, and the opening and closing of the control valve can be controlled by the controller to allow the neutralizing reagent in the neutralizing reagent storage tank to flow into the waste liquid storage tank until the pH value reaches the range of "7" and is discharged after meeting the national environmental protection emission standards.

[0029] Method Example: See also Figure 4 , which is a flowchart of a method for cleaning a wound surface of a post-cast belt of a concrete beam and column provided by an embodiment of the present invention. The method for cleaning a wound surface of a post-cast belt of a concrete beam and column is performed using the above-mentioned device. As shown in the figure, the cleaning method comprises the following steps: Step S1, spraying and cleaning the wound surface of the post-cast strip of the concrete beam and column by rotating the nozzle.

[0030] Specifically, the cleaning agent or acid solution can be poured into the detergent storage box 1 in advance, the rotating nozzle 2 is fixed in front of the wound surface 7 of the post-casting strip of the concrete beam and column, and then the movable hanging plate 8 is hung to the post-casting strip and the concrete wound surface, and the waste liquid collector 3 is fixed to the bottom of the movable hanging plate 8, so that the waste liquid collector 3 is supported below the wound surface 7 of the post-casting strip of the concrete beam and column, and the waste liquid storage box 4 is hung on the lower side of the waste liquid collector 3. The booster pump 8, that is, the agent booster circulation water pump, is turned on. At this time, the rotating nozzle 2 will spray the agent onto the wound surface 7 of the post-casting strip of the concrete beam and column to flush away the residual oil, fat, pigment or other chemicals. Step S2, collecting the cleaning liquid through the waste liquid collector, and directing the cleaning liquid back to the waste liquid storage tank.

[0031] Specifically, the flushed reagent will flow onto the waste liquid storage tank and then flow downstream into the waste liquid collection storage tank 4 .

[0032] Step S3, injecting a neutralizing agent into the waste liquid storage tank to neutralize the cleaning waste liquid in the waste liquid storage tank until the liquid in the waste liquid storage tank is neutral, and then discharging the liquid in the waste liquid storage tank.

[0033] Specifically, when the liquid in the waste liquid storage tank 4 reaches the general capacity of the waste liquid storage tank 4, or when the wound surface 7 of the concrete beam-column post-casting strip is cleaned, the pH value of the solution in the waste liquid storage tank 4 can be detected by the pH value online detector 5, and when the pH value is greater than 7, the controller automatically controls the normally open contact 52 to close, or the normally open contact 52 automatically closes, so that the control valve 62 is energized to open the valve body, and the solution in the neutralizing reagent storage tank 6 is automatically injected into the waste liquid storage tank 4 until the neutralized acidic waste liquid meets the safety and environmental protection requirements for discharge, that is, until the pH value of the solution in the waste liquid storage tank 4 is 7, the controller automatically controls the normally open contact 52 to disconnect, or the normally open contact 52 automatically disconnects, so that the control valve 62 is energized to close the valve body, and the waste liquid drain valve 42 is opened to discharge the waste liquid in the waste liquid storage tank 4.

[0034] In summary, the method for cleaning the wound surface of the post-cast strip of concrete beams and columns provided in this embodiment can effectively clean the pollutants such as oil, fat, pigment or other chemicals on the concrete wound surface, and to a large extent avoid the local environmental pollution of the building and the accidental corrosion and burns of the skin by the workers, as well as the influence of the front and back adhesion of the concrete in the later stage due to inadequate cleaning. In addition, an online pH value detector is installed on the waste liquid storage tank, which can detect the pH value of the acidic cleaning waste liquid in the waste liquid tank at any time. When the liquid level in the waste liquid tank reaches half, the online pH value detector can be turned on, and the opening and closing of the control valve can be controlled by the controller to allow the neutralizing reagent in the neutralizing reagent storage tank to flow into the waste liquid storage tank until the pH value reaches the range of "7" and is discharged after meeting the national environmental protection emission standards.

[0035] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0036] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A cleaning device for the wound surface of the post-cast belt of concrete beams and columns, characterized in that: include: A detergent storage box, used for storing detergent; A rotating nozzle is connected to the detergent storage box and is used to spray the detergent in the detergent storage box onto the wound surface of the concrete beam and column post-casting strip, so as to spray and clean the wound surface of the concrete beam and column post-casting strip; A waste liquid collector is used to be arranged at the bottom of the wound surface of the post-casting belt of the concrete beam and column to collect the cleaning liquid; A waste liquid storage box, which is in communication with the waste liquid collector so that the cleaning liquid collected in the waste liquid collector can flow back into the waste liquid storage box; wherein the waste liquid storage box is provided with a liquid discharge port, and a waste liquid drain valve is provided at the liquid discharge port; A pH value online detector, used to detect and obtain the pH value of the liquid in the waste liquid storage tank; A neutralization reagent storage tank is connected to the waste liquid storage tank, and a control valve is provided on the pipeline connecting the two, which is used to control the connection between the neutralization reagent storage tank and the waste liquid storage tank, so as to control the amount of neutralization reagent injected from the neutralization reagent storage tank into the waste liquid storage tank, so as to neutralize the waste liquid in the waste liquid storage tank; A controller is connected to the online pH detector, and is used to receive the pH value of the liquid in the waste liquid storage tank obtained by the online pH detector, and control the control valve based on the pH value of the liquid in the waste liquid storage tank to control the opening and closing of the control valve, so as to neutralize the waste liquid in the waste liquid storage tank by injecting a neutralizing agent, until the pH value of the liquid in the waste liquid storage tank obtained by the online pH detector is 7, and then control the waste liquid drain valve to open to discharge the waste liquid in the waste liquid storage tank.

2. The cleaning device for the wound surface of the post-cast zone of concrete beams and columns according to claim 1 is characterized in that: The control valve is a solenoid valve.

3. The cleaning device for the wound surface of the post-cast zone of concrete beams and columns according to claim 2 is characterized in that: The controller is connected to a normally open contact, which is connected in series with the control valve. When the pH value of the liquid in the waste liquid storage tank obtained by the pH online detector is greater than 7, the controller controls the normally open contact to close, and the control valve is powered to open the valve body to allow the solution in the neutralization reagent solution tank to be injected into the waste liquid storage tank; when the pH value of the liquid in the waste liquid storage tank obtained by the pH online detector is equal to 7, the controller controls the normally open contact to disconnect, and the control valve loses power to close the valve body to disconnect the connecting pipeline between the neutralization reagent solution tank and the waste liquid storage tank.

4. The cleaning device for the wound surface of the post-cast zone of a concrete beam and column according to any one of claims 1 to 3, characterized in that: Also includes: Storage cabinet; wherein The top of the storage cabinet is provided with a first storage area for storing connecting pipes, movable hanging boards and waste liquid collectors; The middle part of the storage cabinet is provided with a second storage area and a third storage area for storing a neutralization reagent storage box, a rotating nozzle and a booster pump respectively; The bottom of the storage cabinet has a fourth storage area and a fifth storage area which are arranged side by side in a horizontal direction and are used to store a waste liquid storage box and a detergent storage box respectively.

5. The cleaning device for the wound surface of the post-cast zone of a concrete beam and column according to any one of claims 1 to 3, characterized in that: The detergent storage tank is connected to a booster pump for pumping the detergent in the detergent storage tank into the rotating nozzle.

6. The cleaning device for the wound surface of the post-cast strip of concrete beams and columns according to any one of claims 1 to 3, characterized in that: The waste liquid collector is hung on the wound surface of the post-casting strip of the concrete beam and column through a movable hanging plate.

7. The cleaning device for the wound surface of the post-cast zone of a concrete beam and column according to any one of claims 1 to 3, characterized in that: The top of the detergent storage box is provided with a detergent solution filling port; The top of the neutralization reagent solution box is provided with a reagent solution filling port.

8. The cleaning device for the wound surface of the post-cast zone of a concrete beam and column according to any one of claims 1 to 3, characterized in that: The waste liquid collector is provided with an inclined guide collecting plate for guiding the collected cleaning liquid so as to make it flow back into the waste liquid storage box.

9. The cleaning device for the wound surface of the post-cast strip of concrete beams and columns according to any one of claims 1 to 3, characterized in that: The pH value online detector is provided with a corrosion-resistant polytetrafluoroethylene electrode measuring sensor, which is used to be inserted into the waste liquid storage box to detect the pH value of the liquid in the waste liquid storage box.

10. A method for cleaning the wound surface of the post-cast zone of concrete beams and columns, characterized in that: The steps include: The wound surface of the post-casting strip of concrete beams and columns is sprayed and cleaned by a rotating nozzle; The cleaning liquid is collected by a waste liquid collector and directed back to a waste liquid storage tank; A neutralizing agent is injected into the waste liquid storage tank to neutralize the cleaning waste liquid in the waste liquid storage tank until the liquid in the waste liquid storage tank is neutral, and the liquid in the waste liquid storage tank is discharged.

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