Intelligent PH value detection system in shield muck flocculation process

Abstract

The invention belongs to the technical field of shield muck, and particularly relates to a shield muck flocculation process PH value intelligent detection system, which comprises a stirring tank, and the stirring tank is provided with a stirring part, a sampling device and a detection device. According to the intelligent PH value detection system in the shield muck flocculation process, by arranging the sampling device, sampling can be conducted on different layers and different positions of the layers of the stirring tank, the accuracy of PH value detection is facilitated, suction force is generated through the detection device, suction is conducted on the interior of a sampling pipeline through a first one-way valve, and the detection efficiency is improved. Liquid in the stirring tank enters the sampling pipeline through the second one-way valve and then enters the detection device through the first one-way valve, the first one-way valve and the second one-way valve can enable water flow to have only one flow direction, and the parts, making contact with the liquid, of the sampling device and the detection device can be cleaned by conveying cleaning liquid through the sampling pipeline. Therefore, the accuracy of later detection of the PH value is facilitated.

Description

Technical Field

[0001] This invention relates to the field of shield tunneling excavation technology, and in particular to an intelligent pH detection system for the flocculation process of shield tunneling excavation. Background Technology

[0002] Shield tunneling excavation slurry, also known as shield tunneling excavation slurry or shield tunneling mud, refers to the mixture of rock, soil, and debris produced by the cutterhead cutting the soil at the excavation face during the tunneling process of a shield machine, as well as the engineering auxiliary materials mixed with it (such as bentonite, foaming agents, etc.).

[0003] The content of fine-grained soil directly affects the improvement and resource utilization of slag. The flocculation process of shield tunneling slag is sensitive to pH value. Different types of flocculants have different pH ranges. Since the pH value in the flocculation tank is in a dynamic state, it is necessary to monitor and optimize the pH value regularly to keep it within the range where the flocculant is most effective. However, the existing traditional densitometer method is inefficient and difficult to adapt to the rapidly changing construction environment. The flocculation process is sensitive to pH value, but the existing methods rely on manual detection, which cannot be monitored and optimized in real time and is difficult to adapt to the dynamically changing pH value. The filter press effect directly affects the resource utilization efficiency of slag and is difficult to adapt to the rapidly changing construction environment. Summary of the Invention

[0004] Based on the existing technical problems that the pH value of shield tunnel excavated soil relies on manual testing, cannot be monitored and optimized in real time, is difficult to adapt to dynamically changing pH values, and the filtration effect directly affects the efficiency of excavated soil resource utilization, and is difficult to adapt to rapidly changing construction environments, this invention proposes an intelligent pH value detection system for shield tunnel excavated soil flocculation process.

[0005] The present invention proposes an intelligent pH value detection system for the flocculation process of tunnel boring machine slag, which includes a mixing tank, a mixing component, a sampling device and a detection device.

[0006] The sampling device is located inside the stirring component and takes samples from different locations at different levels within the stirring tank. The sampling device includes a sampling pipe that draws in the stirred liquid within the stirring tank.

[0007] The detection device is located on the outer surface of the mixing tank and detects the pH of the liquid sampled by the sampling device. The detection device includes a suction mechanism, a detection mechanism, and a cleaning mechanism. The suction mechanism includes a suction pipe, which is connected to the sampling device to transport the liquid in the sampling pipe. The detection mechanism includes a detection tube, which holds the liquid to be detected. The cleaning mechanism includes a cleaning cylinder with an arc groove, which cleans the detection mechanism.

[0008] Preferably, the stirring component includes a stirring paddle, which is rotatably connected to the inner wall of the stirring tank. A drive motor is fixedly installed on the outer surface of the tank lid, and one end of the output shaft of the drive motor drives the stirring paddle to rotate through a bevel gear.

[0009] The above technical solution allows the stirring paddle to agitate the liquid in the mixing tank, thereby ensuring uniformity during testing.

[0010] Preferably, the sampling device further includes a stirring pipe, which is fixedly installed on the outer surface of the stirring paddle. One end of the stirring pipe is slidably connected to the inner wall of the stirring tank. A sampling port is fixedly installed on the inner wall of the stirring pipe. A first one-way valve is fixedly installed at one end of the sampling port. One end of the first one-way valve is fixedly connected to one end of the sampling pipe. A second one-way valve is fixedly connected to the other end of the sampling pipe. An electromagnetic control valve is fixedly installed at a branch end of the sampling pipe.

[0011] Through the above technical solution, in order to transport the liquid in the mixing tank into the sampling pipe, the detection device generates suction force and then opens the electromagnetic control valve to draw the liquid into the sampling pipe. The liquid in the mixing tank enters the sampling pipe through the electromagnetic control valve and then enters the detection device through the first one-way valve. The first one-way valve and the second one-way valve can ensure that the water flow has only one direction.

[0012] Preferably, a conveying pipe is fixedly installed on the inner wall of the stirring paddle, one end of the conveying pipe is rotatably connected to the inner wall of the stirring paddle, one end of the sampling pipe is fixedly connected to the outer surface of the conveying pipe, and one end of the conveying pipe is fixedly connected to a main pipe with a control valve and a water pump through a rotary joint. The main pipe is connected to the cleaning liquid tank through the water pump and the control valve to convey the cleaning liquid into the conveying pipe.

[0013] The above technical solution cleans the parts of the sampling and testing devices that come into contact with liquid by using a water pump to draw the cleaning solution from the cleaning solution tank into the main pipeline, which then transports it into the delivery pipeline and finally into the sampling pipeline. A control valve keeps the main pipeline sealed during sampling to prevent interference with the sampling process.

[0014] Preferably, the suction mechanism further includes a detection housing, which is fixedly installed on the outer surface of the mixing tank. A connecting housing is fixedly installed on the outer surface of the detection housing, and the outer surface of the connecting housing is fixedly connected to the outer surface of the mixing tank. A sealing plate with a rack is slidably inserted into the inner wall of the connecting housing. A transmission gear is rotatably connected to the inner wall of the connecting housing, and the transmission gear meshes with the rack of the sealing plate. A toothed ring is rotatably connected to the inner wall of the connecting housing, and the toothed ring meshes with the transmission gear. A drive gear is rotatably connected to the outer surface of the connecting housing through a bearing seat.

[0015] The above technical solution allows the sealing plate to seal the connecting shell, and the rotation of the gear ring to drive the rotation of the transmission gear, thereby moving the sealing plate to complete the sealing and unsealing of the interior of the connecting shell.

[0016] Preferably, a pusher frame is slidably inserted into the inner wall of the connecting housing, and the outer surface of the pusher frame is fixedly installed with the outer surface of the suction pipe. A plug sleeve is fixedly installed on the inner wall of the connecting housing, and the inner wall of the plug sleeve is slidably inserted into the outer surface of the suction pipe. After one end of the suction pipe is moved, it is slidably inserted into the inner wall of the sampling port. A suction water pump is fixedly installed on the inner wall of the detection housing. The inlet end of the suction water pump is fixedly connected to the suction pipe through a flexible hose, and the outlet end of the suction water pump is fixedly connected to an outlet pipe.

[0017] Through the above technical solution, in order to detect the sucked liquid, the suction force generated by the suction pump is transmitted to the suction pipe. The suction pipe and the suction pump are connected by a flexible hose, which facilitates the movement of the suction pipe. The insertion sleeve allows the sealing plate to be moved and then slidably inserted between the suction pipes to seal the suction pipes and the connecting shell, preventing water from entering.

[0018] Preferably, a push hydraulic cylinder is fixedly installed on the upper surface of the detection housing, and a telescopic frame assembly is fixedly installed at one end of the piston rod of the push hydraulic cylinder. The telescopic frame assembly is composed of a push plate and a push frame with a spring that slides into the push plate. The outer surface of the push plate of the telescopic frame assembly contacts the outer surface of the push frame. A rotating sleeve with an arc groove is fixedly installed on the outer surface of the drive gear. A push handle is fixedly installed on the outer surface of the push frame of the telescopic frame assembly. The column of the push handle slides into the inner wall of the arc groove of the rotating sleeve.

[0019] The above technical solution allows the telescopic frame assembly to move by pushing the hydraulic cylinder, which in turn moves the suction pipe.

[0020] Preferably, the detection mechanism further includes a rotating frame, which is rotatably connected to the inner bottom wall of the detection housing via bearings. A rotary motor is fixedly installed on the inner bottom wall of the detection housing. One end of the output shaft of the rotary motor drives the rotation of the rotating frame through a gear set. A rotating plate with a bevel gear is rotatably connected to the outer surface of the rotating frame via bearings. A half-bevel gear is fixedly installed on the outer surface of the detection housing via a bracket. The bevel gear of the rotating plate meshes with the half-bevel gear. A detection probe is slidably inserted into the outer surface of the rotating plate. A magnetic ring is fixedly installed on the outer surface of the detection probe. The outer surface of the magnetic ring is magnetically connected to the outer surface of the rotating frame. A sealing ring is slidably inserted into the outer surface of the detection probe. A connecting spring is fixedly installed on the lower surface of the sealing ring. One end of the connecting spring is fixedly installed on the outer surface of the magnetic ring. A lifting hydraulic cylinder is fixedly installed on the inner wall of the detection housing. One end of the lifting hydraulic cylinder contacts one end of the detection probe via a support plate.

[0021] Through the above technical solution, the rotating frame can drive the rotating plate to rotate. The bevel gear on the rotating plate can mesh with the half bevel gear to drive the rotating plate to turn, which facilitates the switching of the detection probe. When it is necessary to detect the liquid in the detection tube, the detection probe can be made to face upward. By pushing the lifting hydraulic cylinder, the detection probe can be driven to insert into the detection tube to complete the detection of the sampled liquid.

[0022] Preferably, the inner wall of the detection housing is fixedly installed to the outer surface of the detection tube via a support frame, a funnel is fixedly installed on the inner wall of the detection tube, a sealing block is hinged to the inner wall of the funnel, an annular spring is fixedly installed on the inner wall of the sealing block, a sealing film is wrapped around the outer surface of the sealing block, and the outer surface of the sealing film is fixedly bonded to the outer surface of the funnel.

[0023] Through the above technical solution, the sealing block inside the funnel can seal the lower end of the funnel. When one end of the sampling probe is pushed up, the sealing block can deflect outward, causing the sealing membrane to be stretched. The sealing membrane can seal the gap between the sealing blocks, and the ring spring facilitates the reset of the sealing block.

[0024] Preferably, the cleaning mechanism further includes a cleaning pipe, which is fixedly installed at one end of the rotating frame. The outer surface of the cleaning pipe is provided with the same sealing ring, connecting spring, and magnetic ring as the outer surface of the detection probe. One end of the cleaning pipe, after rising, squeezes the sealing block. One end of the cleaning pipe passes through the lower surface of the detection housing and is fixedly connected to the outer surface of the water storage tank via a flexible hose.

[0025] The inner wall of the detection housing is fixedly installed with a limiting sleeve with a column. A telescopic airbag is fixedly installed on the inner wall of the limiting sleeve. One end of the telescopic airbag is rotatably connected to the outer surface of the cleaning cylinder. A return spring is fixedly installed on the inner wall of the limiting sleeve. One end of the return spring is fixedly installed to the outer surface of the telescopic airbag. A delivery check valve is fixedly installed on the inner bottom wall of the cleaning cylinder. One end of the delivery check valve is fixedly connected to one end of the telescopic airbag through a rotary joint. An annular pipe with a nozzle is rotatably connected to the inner wall of the cleaning cylinder. The column of the limiting sleeve is slidably inserted into the inner wall of the arc groove of the cleaning cylinder. The outer surface of the telescopic airbag is fixedly connected to the outer surface of the water inlet of the suction pump through a pipe and a control valve. The outer surface of the annular pipe is fixedly connected to the outer surface of the telescopic airbag pipe through a pipe and a control valve. One end of the telescopic airbag is fixedly connected to the inner wall of the water storage tank through a hose and a control valve.

[0026] With the above technical solution, the cleaning pipe is raised by the lifting hydraulic cylinder at one end, which then squeezes the sealing block. The deflection of the sealing block facilitates the entry of liquid in the funnel into the cleaning pipe. After flowing out through the cleaning pipe, the cleaning fluid also flows out after cleaning the detection tube. Water is introduced into the telescopic airbag, which expands and pushes the internal cleaning cylinder to rotate. The rotation of the cleaning cylinder drives the annular pipe to rotate and clean the downward-facing detection probe. At the same time, after the cleaning water passes through the control valve of the telescopic airbag, the water enters the telescopic airbag through the one-way valve and then enters the water storage tank through the hose to be collected.

[0027] The beneficial effects of this invention are as follows:

[0028] 1. By setting up a sampling device, samples can be taken from different layers and locations within the mixing tank, facilitating accurate pH value testing. After the detection device generates suction force, the liquid is drawn into the sampling pipeline through the first one-way valve. The liquid in the mixing tank enters the sampling pipeline through the second one-way valve and then enters the detection device through the first one-way valve. The first and second one-way valves ensure that the water flows in only one direction. By delivering cleaning fluid through the sampling pipeline, the parts of the sampling and detection devices that come into contact with the liquid can be cleaned, thus facilitating accurate pH value testing later. This solves the technical problems of existing shield tunneling excavated soil pH value testing relying on manual testing, lacking real-time monitoring and optimization, being difficult to adapt to dynamically changing pH values, and having the filtration effect directly affecting the efficiency of excavated soil resource utilization, making it difficult to adapt to rapidly changing construction environments.

[0029] 2. By setting up a detection device, the sampled liquid can be tested, and the detection probe can be cleaned for future use. A rotating frame drives a rotating plate, and the bevel gear on the rotating plate meshes with a half-bevel gear, causing the plate to rotate and facilitating probe switching. When testing the liquid in the detection tube, the detection probe is positioned upwards, and the lifting hydraulic cylinder pushes it into the tube to complete the liquid sample testing. The cleaning pipe end rises under the pressure of the lifting hydraulic cylinder, compressing the sealing block and sealing it. The deflection of the block facilitates the entry of liquid from the funnel into the cleaning pipe. After flowing out through the cleaning pipe, the cleaning fluid also flows out after cleaning the detection tube. Water is introduced into the telescopic airbag, which expands and pushes the internal cleaning cylinder to rotate. The rotation of the cleaning cylinder drives the annular pipe to rotate and clean the downward-facing detection probe. This enables automatic pH value detection of the liquid in the mixing tank, solving the technical problems of existing shield tunneling excavated soil pH value detection relying on manual detection, lack of real-time monitoring and optimization, difficulty in adapting to dynamically changing pH values, and the direct impact of pressure filtration effect on the efficiency of excavated soil resource utilization, making it difficult to adapt to rapidly changing construction environments. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of an intelligent pH detection system for the flocculation process of tunnel boring machine slag, as proposed in this invention.

[0031] Figure 2 This is a three-dimensional view of the stirring paddle structure of an intelligent pH detection system for the flocculation process of tunnel boring machine slag, as proposed in this invention.

[0032] Figure 3 This is a three-dimensional view of the mixing pipe structure of an intelligent pH value detection system for the flocculation process of tunnel slag, as proposed in this invention.

[0033] Figure 4 This is a three-dimensional view of the sampling pipeline structure of an intelligent pH value detection system for the flocculation process of tunnel slag proposed in this invention.

[0034] Figure 5 This is a three-dimensional view of the detection shell structure of an intelligent detection system for pH value during the flocculation process of tunnel boring machine slag, as proposed in this invention.

[0035] Figure 6 This is a three-dimensional view of the hydraulic cylinder structure of the intelligent pH detection system for the flocculation process of tunnel boring machine slag, as proposed in this invention.

[0036] Figure 7 This is a three-dimensional view of the toothed ring structure of an intelligent pH detection system for the flocculation process of tunnel boring machine slag, as proposed in this invention.

[0037] Figure 8This is a perspective view of the rotating frame structure of an intelligent pH value detection system for the flocculation process of tunnel boring machine excavated soil proposed in this invention.

[0038] Figure 9 This is a three-dimensional view of the funnel structure of an intelligent pH detection system for the flocculation process of tunnel boring machine excavated soil, as proposed in this invention.

[0039] Figure 10 This is a three-dimensional view of the sealing block structure of an intelligent pH detection system for the flocculation process of tunnel boring machine slag, as proposed in this invention.

[0040] Figure 11 This is a perspective view of the rotating plate structure of an intelligent pH detection system for the flocculation process of tunnel boring machine slag, as proposed in this invention.

[0041] Figure 12 This is a three-dimensional view of the detection probe structure of an intelligent detection system for pH value in the flocculation process of tunnel slag, as proposed in this invention.

[0042] Figure 13 This is a three-dimensional view of the suction pump structure of an intelligent pH detection system for the flocculation process of tunnel boring machine excavated soil, as proposed in this invention.

[0043] Figure 14 This is a three-dimensional view of the cleaning cylinder structure of an intelligent pH detection system for the flocculation process of tunnel boring machine slag, as proposed in this invention.

[0044] Figure 15 This is a three-dimensional view of the telescopic airbag structure of an intelligent pH value detection system for the flocculation process of tunnel boring machine slag, as proposed in this invention.

[0045] In the diagram: 1. Mixing tank; 11. Agitator; 12. Drive motor; 2. Mixing pipe; 21. Sampling port; 22. First check valve; 23. Sampling pipe; 24. Second check valve; 25. Solenoid control valve; 3. Delivery pipe; 31. Main pipe; 4. Detection housing; 41. Connecting housing; 42. Sealing plate; 43. Transmission gear; 44. Gear ring; 45. Drive gear; 5. Push frame; 51. Suction pipe; 52. Insert sleeve; 53. Suction pump; 54. Discharge pipe; 6. Push hydraulic cylinder; 61. Extension... 62. Retractable frame assembly; 63. Rotating sleeve; 7. Push handle; 7. Rotating frame; 71. Rotary motor; 72. Rotating plate; 73. Half-bevel gear; 74. Detection probe; 75. Magnetic ring; 76. Sealing ring; 77. Connecting spring; 78. Lifting hydraulic cylinder; 8. Detection tube; 81. Funnel; 82. Sealing block; 83. Ring spring; 84. Sealing membrane; 9. Cleaning pipe; 91. Water storage tank; 92. Limiting sleeve; 93. Telescopic airbag; 94. Return spring; 95. Cleaning cylinder; 96. Conveying check valve; 97. Ring pipe. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] Reference Figures 1-15 A smart pH detection system for the flocculation process of tunnel boring machine slag includes a mixing tank 1, which is equipped with a mixing component, a sampling device and a detection device.

[0048] Specifically, in order to stir the slag mixture and make the flocculant and the mixture evenly mixed to facilitate the flocculation effect, the stirring component includes a stirring paddle 11. The stirring paddle 11 is rotatably connected to the inner wall of the mixing tank 1. A drive motor 12 is fixedly installed on the outer surface of the tank cover of the mixing tank 1. One end of the output shaft of the drive motor 12 drives the stirring paddle 11 to rotate through a bevel gear.

[0049] like Figures 2-4 As shown, the sampling device is located inside the stirring component and takes samples from different places at different levels inside the stirring tank 1. The sampling device includes a sampling pipe 23, which draws the stirred liquid inside the stirring tank 1.

[0050] Specifically, the sampling device also includes a stirring pipe 2, which is fixedly installed on the outer surface of the stirring paddle 11. The stirring pipe 2 can achieve a stirring effect and also seal the sampling pipe 23. A sealing ring can seal the through hole on the mixing tank 1 that connects to the detection device when the stirring pipe 2 rotates, preventing liquid from entering the detection device. The wear-resistant ring is made of wear-resistant tungsten steel. One end of the stirring pipe 2 is slidably connected to the inner wall of the mixing tank 1, facilitating connection between detection devices. A sampling port 21 is fixedly installed on the inner wall of the stirring pipe 2. A first check valve 22 is fixedly installed at one end of the sampling pipe 23. One end of the first check valve 22 is fixedly connected to one end of the sampling pipe 23, and the other end of the sampling pipe 23 is fixedly connected to a second check valve 24. The cooperation of the first check valve 22 and the second check valve 24 enables the liquid to flow in only one direction. An electromagnetic control valve 25 is fixedly installed at the branch end of the sampling pipe 23. By opening the electromagnetic control valve 25, the liquid can easily enter the sampling pipe 23. The circuit of the electromagnetic control valve 25 extends out through the stirring paddle 11 inside the stirring pipe 2 and can conduct electricity through the conductive ring without affecting the rotation of the stirring paddle 11.

[0051] Specifically, in order to facilitate the cleaning of the sampling pipe 23, a conveying pipe 3 is fixedly installed on the inner wall of the stirring paddle 11. One end of the conveying pipe 3 is rotatably connected to the inner wall of the stirring paddle 11, and one end of the sampling pipe 23 is fixedly connected to the outer surface of the conveying pipe 3. The second one-way valve 24 can prevent water from entering the conveying pipe 3 through the sampling pipe 23. One end of the conveying pipe 3 is fixedly connected to a main pipe 31 with a control valve and a water pump through a rotary joint. The main pipe 31 is connected to the cleaning liquid tank through the water pump and the control valve to deliver the cleaning liquid into the conveying pipe 3.

[0052] like Figures 5-15 As shown, in order to test the liquid in the sampling pipe 23, the testing device is located on the outer surface of the mixing tank 1 and tests the pH of the liquid sampled by the sampling device. The testing device includes a suction mechanism, a testing mechanism, and a cleaning mechanism. The suction mechanism includes a suction pipe 51, which is connected to the sampling device to complete the transportation of the liquid in the sampling pipe 23. The testing mechanism includes a testing tube 8, which holds the liquid to be tested. The cleaning mechanism includes a cleaning cylinder 95 with an arc groove, which cleans the testing mechanism.

[0053] Specifically, in order to automatically aspirate the sampling pipe 23, the aspiration mechanism also includes a detection housing 4, which is fixedly installed on the outer surface of the mixing tank 1. A connecting housing 41 is fixedly installed on the outer surface of the detection housing 4, and the outer surface of the connecting housing 41 is fixedly connected to the outer surface of the mixing tank 1 to prevent leakage of liquid in the mixing tank 1. In order to seal the connecting housing 41 and prevent liquid in the mixing tank 1 from entering the connecting housing 41, a sealing plate 42 with a rack is slidably inserted into the inner wall of the connecting housing 41. In order to move the sealing plate 42 and release the seal of the connecting housing 41, a transmission gear 43 is rotatably connected to the inner wall of the connecting housing 41. The transmission gear 43 meshes with the rack of the sealing plate 42. A toothed ring 44 is rotatably connected to the inner wall of the connecting housing 41 and meshes with the transmission gear 43. A drive gear 45 is rotatably connected to the outer surface of the connecting housing 41 through a bearing seat.

[0054] Specifically, in order to push the suction pipe 51, a pusher 5 is slidably inserted into the inner wall of the connecting housing 41, and the outer surface of the pusher 5 is fixedly installed with the outer surface of the suction pipe 51. In order to seal the connecting housing 41 after the sealing plate 42 moves, an insertion sleeve 52 is fixedly installed on the inner wall of the connecting housing 41, and the inner wall of the insertion sleeve 52 is slidably inserted into the outer surface of the suction pipe 51. In order to facilitate the delivery of liquid, one end of the suction pipe 51 is slidably inserted into the inner wall of the sampling port 21 after moving. In order to generate suction force, a suction water pump 53 is fixedly installed on the inner wall of the detection housing 4. The water inlet of the suction water pump 53 is fixedly connected to the suction pipe 51 through a hose, which facilitates the movement of the suction pipe 51. The water outlet of the suction water pump 53 is fixedly connected to the water outlet pipe 54.

[0055] Specifically, in order to move the suction pipe 51 and rotate the gear ring 44, a push hydraulic cylinder 6 is fixedly installed on the upper surface of the detection housing 4. A telescopic frame assembly 61 is fixedly installed at one end of the piston rod of the push hydraulic cylinder 6. The telescopic frame assembly 61 consists of a push plate and a spring-loaded push frame that slides into the push plate. The push plate of the telescopic frame assembly 61 contacts the outer surface of the push frame 5. A rotating sleeve 62 with an arc groove is fixedly installed on the outer surface of the drive gear 45. A push handle 63 is fixedly installed on the outer surface of the push frame of the telescopic frame. The column of the push handle 63 slides into the inner wall of the arc groove of the rotating sleeve 62. After the rotating sleeve 62 is rotated by the push handle 63, it is limited. A limit plate can be set on the connecting housing 41, or the rotating sleeve 62 can be directly used for limitation. The continued push of the push hydraulic cylinder 6 can drive the push plate to move on the push frame. After the push frame 5 moves, it is inserted into the sampling port 21 to perform suction.

[0056] Specifically, for liquid testing, the testing mechanism also includes a rotating frame 7, which is rotatably connected to the inner bottom wall of the testing housing 4 via bearings. A rotary motor 71 is fixedly installed on the inner bottom wall of the testing housing 4. One end of the output shaft of the rotary motor 71 drives the rotation of the rotating frame 7 through a gear set. A rotating plate 72 with bevel gears is rotatably connected to the outer surface of the rotating frame 7 via bearings. A half-bevel gear 73 is fixedly installed on the outer surface of the testing housing 4 via a bracket. The bevel gear of the rotating plate 72 meshes with the half-bevel gear 73. A detection probe 74 is slidably inserted into the outer surface of the rotating plate 72. The detection system can be controlled by displaying the values ​​detected by the detection probe 74 on a display screen installed on the testing housing 4. Thus, the detection probe 74 is rotated by the rotation of the rotating plate 72 to complete the detection. When the probe 74 is facing upwards, the detection is performed; when the probe 74 is facing downwards, the cleaning is performed. To facilitate the fixing of the probe 74 on the rotating plate 72 and to ensure that its lifting is not affected, a magnetic ring 75 is fixedly installed on the outer surface of the probe 74. The outer surface of the magnetic ring 75 is magnetically connected to the outer surface of the rotating frame 7. To seal the detection tube 8 during detection, a sealing ring 76 is slidably inserted into the outer surface of the probe 74. To ensure that the sealing ring 76 does not affect the lifting of the probe 74, a connecting spring 77 is fixedly installed on the lower surface of the sealing ring 76. One end of the connecting spring 77 is fixedly installed on the outer surface of the magnetic ring 75. To push the probe 74 upwards, a lifting hydraulic cylinder 78 is fixedly installed on the inner wall of the detection housing 4. One end of the lifting hydraulic cylinder 78 contacts one end of the probe 74 through a support plate.

[0057] Specifically, in order to facilitate the detection of the liquid in the detection tube 8 and the cleaning of the detection tube 8, the inner wall of the detection housing 4 is fixedly installed to the outer surface of the detection tube 8 via a support frame. A funnel 81 is fixedly installed on the inner wall of the detection tube 8. In order to seal the lower end of the funnel 81 and facilitate the storage of liquid when not detecting, a sealing block 82 is hinged to the inner wall of the funnel 81. A ring spring 83 is fixedly installed on the inner wall of the sealing block 82. A sealing film 84 is wrapped around the outer surface of the sealing block 82. The outer surface of the sealing film 84 is fixedly bonded to the outer surface of the funnel 81.

[0058] Specifically, in order to allow the liquid in the funnel 81 to flow out, the cleaning mechanism also includes a cleaning pipe 9. The cleaning pipe 9 is fixedly installed at one end of the rotating frame 7. The outer surface of the cleaning pipe 9 is provided with a sealing ring 76, a connecting spring 77 and a magnetic ring 75, which are the same as the outer surface of the detection probe 74. The function and installation method of the sealing ring 76, the connecting spring 77 and the magnetic ring 75 are the same as the function and installation method of the detection probe 74. After the cleaning pipe 9 rises, one end squeezes the sealing block 82. One end of the cleaning pipe 9 passes through the lower surface of the detection housing 4 through a hose and is fixedly connected to the outer surface of the water storage tank 91.

[0059] To drive the cleaning cylinder 95 to rotate and increase the cleanliness of the cleaning probe, a limiting sleeve 92 with a column is fixedly installed on the inner wall of the detection housing 4. To push the cleaning cylinder 95 up and down, a telescopic airbag 93 is fixedly installed on the inner wall of the limiting sleeve 92. To avoid affecting the rotation of the cleaning cylinder 95, one end of the telescopic airbag 93 is rotatably connected to the outer surface of the cleaning cylinder 95. To facilitate the return of the telescopic airbag 93, a return spring 94 is fixedly installed on the inner wall of the limiting sleeve 92, with one end of the return spring 94 fixedly installed on the outer surface of the telescopic airbag 93. To facilitate the drainage of the cleaned water from the cleaning cylinder 95, a one-way valve 96 is fixedly installed on the inner bottom wall of the cleaning cylinder 95. One end of the one-way valve 96 is fixedly connected to one end of the telescopic airbag 93 through a rotary joint, which facilitates the discharge of water from the cleaning cylinder 95. In order to clean the detection probe 74, an annular pipe 97 with a nozzle is rotatably connected to the inner wall of the cleaning cylinder 95. The column of the limiting sleeve 92 is slidably inserted into the inner wall of the arc groove of the cleaning cylinder 95. In order to expand into the telescopic airbag 93, the outer surface of the telescopic airbag 93 is fixedly connected to the outer surface of the water inlet of the suction pump 53 through a pipe and a control valve. The outer surface of the annular pipe 97 is fixedly connected to the outer surface of the pipe of the telescopic airbag 93 through a pipe and a control valve. One end of the telescopic airbag 93 is fixedly connected to the inner wall of the water storage tank 91 through a hose and a control valve.

[0060] Working principle: When testing the aqueous solution used in the flocculation process of tunnel boring machine excavation, the agitator 11 rotates slowly under the control of the drive motor 12, causing one end of the agitator pipe 2 to connect with the through hole on the agitator tank 1. Multiple agitator pipes 2 can pump and transport solutions at different levels and different positions within the same level in the agitator tank 1. The hydraulic cylinder 6 on the detection housing 4 is activated, which pushes the telescopic frame assembly 61 to move. The column of the push handle 63 on the pusher of the telescopic frame assembly 61 slides against the inner wall of the arc groove of the rotating sleeve 62, pushing the rotating sleeve 62 on the drive gear 45 to rotate. The rotating sleeve 62 drives the drive gear. 45 rotates, driving gear 45 drives the toothed ring 44 on the connecting housing 41 to rotate, the toothed ring 44 drives the transmission gear 43 to rotate, the transmission gear 43 drives the sealing plate 42 to move, and then the sealing of one end of the connecting housing 41 is released. After the pusher of the telescopic frame assembly 61 is limited, the hydraulic cylinder 6 can continue to drive the push plate on the telescopic frame assembly 61 to move on the pusher. The spring is compressed, and the pusher of the telescopic frame assembly 61 drives the pusher 5 to move. The pusher 5 pushes the suction pipe 51 to move through the inner wall of the insertion sleeve 52 and then passes through the channel after the sealing plate 42 is opened and enters to insert into one end of the sampling port 21 on the stirring pipe 2.

[0061] When the suction pump 53 is turned on, the suction force generated draws the sample pipe 23 connected to the first one-way valve 22 through the suction pipe 51. At the same time, the electromagnetic control valve 25 is turned on, and the liquid in the mixing tank 1 enters the suction pipe 51 through the sample pipe 23. The liquid in the suction pipe 51 enters the outlet pipe 54 through the suction pump 53, and enters the funnel 81 in the detection pipe 8 below through the outlet pipe 54.

[0062] After the lifting hydraulic cylinder 78 extends, it pushes the detection probe 74 on the rotating plate 72 to rise. The magnetic ring 75 leaves the outer surface of the rotating plate 72, and the detection probe 74 is inserted into one end of the funnel 81 of the detection tube 8. At the same time, the sealing ring 76 is connected to the lower surface of the funnel 81. The detection probe 74 continues to rise, the connecting spring 77 is compressed, and one end of the detection probe 74 is inserted between the sealing blocks 82. The sealing blocks 82 are squeezed and deflected, the ring spring 83 is stretched, the sealing membrane 84 is stretched, and the detection probe 74 contacts the funnel 81. The sealing membrane 84 is wrapped by the probe of the detection probe 74. The detection probe 74 detects the pH value of the liquid inside. After the detection is completed, the detection probe 74 is reset, and the magnetic ring 75 contacts the upper surface of the rotating plate 72 and is magnetically connected.

[0063] The rotating frame 7 is driven by the rotating motor 71 to rotate. The rotating frame 7 places the cleaning pipe 9 at one end below the detection pipe 8. At the same time, it is pushed up by the lifting hydraulic cylinder 78 and inserted into the cleaning pipe 9. The liquid in the funnel 81 after the detection is completed enters the water storage tank 91 through the cleaning pipe 9. At the same time, the suction pump 53 is started. The main pipeline 31 is started by the water pump. The opening of the control valve delivers the cleaning liquid into the delivery pipeline 3. The delivery pipeline 3 delivers the cleaning liquid into the sampling pipeline 23, and then into the suction pipeline 51. Through the suction pipeline 51, it enters the detection pipe 8, which can clean the sampling pipeline 23, the suction pipeline 51 and the funnel 81. The cleaning water enters the water storage tank 91.

[0064] Simultaneously, the rotation of the rotating frame 7 drives the rotating plate 72 to rotate. The bevel gear and half-bevel gear 73 on the rotating plate 72 mesh, causing the rotating plate 72 to rotate, making the detection probe 74 face downwards and positioned above the cleaning cylinder 95. At the cleaning and conveying end, the control valve on the pipe connected to the inlet of the suction pump 53 opens, allowing the cleaning fluid to enter the telescopic airbag 93. The telescopic airbag 93 inflates, pushing the cleaning cylinder 95 inside the limiting sleeve 92 upwards, fitting onto the outer surface of the detection probe 74. The arc groove of the cleaning cylinder 95 slides through the column of the limiting sleeve 92, causing the cleaning cylinder 95 to rotate. The cleaning cylinder 95 drives the annular pipe 97 to rotate. Simultaneously, the control valve on the pipe connecting the annular pipe 97 and the telescopic airbag 93 opens, allowing the cleaning fluid to enter the annular pipe 97. The nozzle sprays the cleaning fluid to rinse the detection probe 74.

[0065] After cleaning, the control valve on the hose at the bottom of the telescopic airbag 93 is opened, and the cleaning fluid enters the water tank 91 through the hose. At the same time, the liquid in the cleaning cylinder 95 enters the telescopic airbag 93 through the one-way valve and then enters the water tank 91. The telescopic airbag 93 is reset under the force of the reset spring 94, which in turn drives the cleaning cylinder 95 to reset.

[0066] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A shield sludge flocculation process PH value intelligent detection system, comprising a stirring tank (1), characterized in that: The stirring tank (1) is provided with a stirring component, a sampling device and a detection device; The sampling device is located inside the stirring component and samples different places at different levels in the stirring tank (1), and the sampling device comprises a sampling pipeline (23) for sucking the stirring liquid in the stirring tank (1); The detection device is located on the outer surface of the stirring tank (1) and detects the PH of the liquid sampled by the sampling device, and the detection device comprises a sucking mechanism, a detection mechanism and a cleaning mechanism, the sucking mechanism comprises a sucking pipeline (51) connected with the sampling device to complete the delivery of the liquid in the sampling pipeline (23), the detection mechanism comprises a detection tube (8) for containing the liquid to be detected, and the cleaning mechanism comprises a cleaning cylinder (95) with an arc groove for cleaning the detection mechanism.

2. The intelligent system for detecting the PH value of the sludge flocculation process of the shield tunneling according to claim 1, characterized in that: The stirring component comprises a stirring paddle (11) rotatably connected to the inner wall of the stirring tank (1), and a driving motor (12) is fixedly installed on the outer surface of the tank cover of the stirring tank (1), and the output shaft of the driving motor (12) drives the stirring paddle (11) to rotate through a bevel gear.

3. The intelligent system for detecting the PH value of the sludge flocculation process of the shield tunneling according to claim 2, characterized in that: The sampling device further comprises a stirring pipeline (2) fixedly installed on the outer surface of the stirring paddle (11), one end of the stirring pipeline (2) is slidably connected to the inner wall of the stirring tank (1), a sampling port (21) is fixedly installed on the inner wall of the stirring pipeline (2), one end of the sampling port (21) is fixedly installed with a first one-way valve (22), one end of the first one-way valve (22) is fixedly communicated with one end of the sampling pipeline (23), the other end of the sampling pipeline (23) is fixedly communicated with a second one-way valve (24), and a solenoid control valve (25) is fixedly installed on the branch end of the sampling pipeline (23).

4. The intelligent system for detecting the PH value of the sludge flocculation process of the shield tunnel according to claim 3, characterized in that: A conveying pipeline (3) is fixedly installed on the inner wall of the stirring paddle (11), one end of the conveying pipeline (3) is rotatably connected to the inner wall of the stirring paddle (11), one end of the sampling pipeline (23) is fixedly communicated with the outer surface of the conveying pipeline (3), one end of the conveying pipeline (3) is fixedly communicated with a main pipeline (31) provided with a control valve and a water pump through a rotary joint, and the main pipeline (31) is communicated with a cleaning liquid barrel through the water pump and the control valve to deliver the cleaning liquid into the conveying pipeline (3).

5. The intelligent system for detecting the pH value of the sludge flocculation process of a shield tunneling machine according to claim 4, characterized in that: The suction mechanism further comprises a detection housing (4) fixedly installed on the outer surface of the stirring tank (1), an outer surface of the detection housing (4) is fixedly installed with a connecting housing (41), an outer surface of the connecting housing (41) is fixedly communicated with the outer surface of the stirring tank (1), an inner wall of the connecting housing (41) is slidably inserted with a sealing plate (42) with a rack, the inner wall of the connecting housing (41) is rotatably connected with a transmission gear (43), the transmission gear (43) is engaged with the rack of the sealing plate (42), the inner wall of the connecting housing (41) is rotatably connected with a gear ring (44), the gear ring (44) is engaged with the transmission gear (43), and the outer surface of the connecting housing (41) is rotatably connected with a drive gear (45) through a bearing seat.

6. The intelligent system for detecting the pH value of a slurry flocculation process of a shield tunneling machine according to claim 5, characterized in that: An inner wall of the connecting housing (41) is slidably inserted with a push frame (5), an outer surface of the push frame (5) is fixedly installed with the outer surface of the suction pipeline (51), the inner wall of the connecting housing (41) is fixedly installed with a plug-in sleeve (52), the inner wall of the plug-in sleeve (52) is slidably inserted with the outer surface of the suction pipeline (51), one end of the suction pipeline (51) is slidably inserted with the inner wall of the sampling port (21), an inner wall of the detection housing (4) is fixedly installed with a suction water pump (53), a water inlet end of the suction water pump (53) is fixedly communicated with the suction pipeline (51) through a hose, and a water outlet end of the suction water pump (53) is fixedly communicated with a water outlet pipeline (54).

7. The intelligent system for detecting the pH value of a slurry flocculation process of a shield tunneling machine according to claim 6, characterized in that: An upper surface of the detection housing (4) is fixedly installed with a push hydraulic cylinder (6), one end of a piston rod of the push hydraulic cylinder (6) is fixedly installed with a telescopic frame assembly (61), the telescopic frame assembly (61) is composed of a push plate and a push frame slidably inserted with a spring, an outer surface of the push plate of the telescopic frame assembly (61) is in contact with the outer surface of the push frame (5), an outer surface of the drive gear (45) is fixedly installed with a rotating sleeve (62) with an arc groove, an outer surface of the push frame of the telescopic frame assembly (61) is fixedly installed with a push handle (63), and a vertical column of the push handle (63) is slidably inserted with an inner wall of the arc groove of the rotating sleeve (62).

8. The intelligent system for detecting the pH value of a slurry flocculation process of a shield tunneling machine according to claim 7, characterized in that: The detection mechanism further comprises a rotating frame (7) which is rotatably connected to the inner bottom wall of the detection shell (4), the inner bottom wall of the detection shell (4) is fixedly installed with a rotating motor (71), one end of the output shaft of the rotating motor (71) drives the rotation of the rotating frame (7) through the transmission of a gear set, the outer surface of the rotating frame (7) is rotatably connected with a rotating plate (72) with bevel gears, the outer surface of the detection shell (4) is fixedly installed with a half bevel gear (73) through a support, the bevel gear of the rotating plate (72) is engaged with the half bevel gear (73), the outer surface of the rotating plate (72) is slidably inserted with a detection probe (74), the outer surface of the detection probe (74) is fixedly installed with a magnetic ring (75), the outer surface of the magnetic ring (75) is magnetically connected with the outer surface of the rotating frame (7), the outer surface of the detection probe (74) is slidably inserted with a sealing ring (76), the lower surface of the sealing ring (76) is fixedly installed with a connecting spring (77), one end of the connecting spring (77) is fixedly installed with the outer surface of the magnetic ring (75), the inner wall of the detection shell (4) is fixedly installed with a lifting hydraulic cylinder (78), one end of the lifting hydraulic cylinder (78) is in contact with one end of the detection probe (74) through a support plate.

9. The intelligent system for detecting the pH value of a slurry flocculation process of a shield tunneling machine according to claim 8, characterized in that: The inner wall of the detection shell (4) is fixedly installed with the outer surface of the detection tube (8) through a support frame, the inner wall of the detection tube (8) is fixedly installed with a funnel (81), the inner wall of the funnel (81) is hingedly connected with a sealing block (82), the inner wall of the sealing block (82) is fixedly installed with an annular spring (83), the outer surface of the sealing block (82) is wrapped with a sealing film (84), the outer surface of the sealing film (84) is fixedly bonded with the outer surface of the funnel (81).

10. The intelligent system for detecting the pH value of a slurry flocculation process of a shield tunneling machine according to claim 9, characterized in that: The cleaning mechanism further comprises a cleaning pipeline (9) which is slidably inserted into one end of the rotating frame (7), the outer surface of the cleaning pipeline (9) is provided with the same sealing ring (76), connecting spring (77) and magnetic ring (75) as the outer surface of the detection probe (74), one end of the cleaning pipeline (9) after rising extrudes the sealing block (82), the outer side of the stirring tank (1) is placed with a water storage tank (91), one end of the cleaning pipeline (9) is fixedly communicated with the outer surface of the water storage tank (91) through a hose penetrating the lower surface of the detection shell (4); The inner wall of the detection shell (4) is fixedly installed with a limiting sleeve (92) with a column, the inner wall of the limiting sleeve (92) is fixedly installed with a telescopic air bag (93), one end of the telescopic air bag (93) is rotatably connected with the outer surface of the cleaning cylinder (95), the inner wall of the limiting sleeve (92) is fixedly installed with a return spring (94), one end of the return spring (94) is fixedly installed with the outer surface of the telescopic air bag (93), the inner bottom wall of the cleaning cylinder (95) is fixedly installed with a delivery check valve (96), one end of the delivery check valve (96) is fixedly communicated with one end of the telescopic air bag (93) through a rotary joint, the inner wall of the cleaning cylinder (95) is rotatably connected with an annular pipeline (97) with a spray head, the column of the limiting sleeve (92) is slidably inserted into the arc groove inner wall of the cleaning cylinder (95), the outer surface of the telescopic air bag (93) is fixedly communicated with the water inlet end outer surface of the suction water pump (53) through a pipeline and a control valve, the outer surface of the annular pipeline (97) is fixedly communicated with the outer surface of the telescopic air bag (93) pipeline through a pipeline and a control valve, one end of the telescopic air bag (93) is fixedly communicated with the inner wall of the water storage tank (91) through a hose and a control valve.

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