A pulsed injection device for enhancing uniformity of distribution of a repair agent

Abstract

The application discloses a pulse injection device for enhancing the uniformity of repair reagent distribution, which comprises a base, a supply assembly, an injection assembly and a control assembly; the supply assembly is used for supplying the repair reagent to the injection assembly; the injection assembly is used for injecting the repair reagent into the soil at a certain pulse pressure; and the control assembly is used for controlling the operation of the device and simultaneously regulating the operation parameters of the device; the device has a reasonable structure design; the repair reagent is injected into the soil through controllable short-time high-pressure pulses, the preferential flow of the repair reagent in the high-permeability area is reduced, and the permeability of the repair reagent in the low-permeability area is enhanced; moreover, the capillary force of the soil is overcome through the instant high-pressure pulses, the distribution uniformity of the repair reagent in the soil micropore is improved, and thus the effect of the repair reagent is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil remediation equipment, in particular to a pulse injection device for enhancing the uniformity of remediation reagent distribution. BACKGROUND

[0002] Soil in-situ reagent remediation is an environmental remediation technology, which involves directly applying chemical reagents at the original position of the soil to promote the transformation or fixation of pollutants and reduce their environmental risks. This method is usually suitable for contaminated sites that are not suitable for excavation or have complex structures. In-situ remediation technology has the advantages of small disturbance to the contaminated site, relatively low remediation cost and relatively fast remediation rate.

[0003] However, the existing in-situ reagent soil remediation equipment mainly uses injection to add reagents. In order to improve the remediation effect and make the pollutants fully contact with the reagents, the main methods are: (1) increasing the injection pressure and the amount of reagent injection (2) increasing the injection well layout density. The above measures not only increase the remediation engineering work and energy consumption, but also cause the reagent to diffuse to non-target areas due to excessive pressure, resulting in increased remediation cost and increased construction safety hazards. SUMMARY

[0004] In view of the above technical problems, the present application provides a pulse injection device for enhancing the uniformity of remediation reagent distribution.

[0005] The technical scheme of the present application is: a pulse injection device for enhancing the uniformity of remediation reagent distribution, comprising a base, a supply assembly, an injection assembly and a control assembly;

[0006] The supply assembly comprises a reagent tank arranged on the base, a mixing plate rotatably connected inside the reagent tank, and a mixing motor arranged at the top of the reagent tank and providing power for the mixing plate;

[0007] The injection assembly comprises a mounting bracket arranged on the base, a guide pipe arranged inside the mounting bracket, a drilling pipe slidably connected inside the guide pipe and capable of penetrating the base, an injection probe arranged inside the drilling pipe, a drilling motor arranged on the side wall of the mounting bracket and providing power for the drilling pipe, a high-pressure pump arranged on the base and having an input end connected with the reagent tank and an output end connected with the injection probe, and a pulse generator arranged on the base and connected with the high-pressure pump; a rack penetrating the guide pipe is arranged on the side wall of the drilling pipe, and a drive gear meshing with the rack is arranged on the output shaft of the drilling motor; an electromagnetic valve is arranged at the connection between the high-pressure pump and the injection probe;

[0008] The control assembly comprises a control box arranged on the base, an operation screen arranged on the control box, a PLC controller arranged inside the control box, a data storage and a wireless communication module.

[0009] Further, the monitoring assembly comprises a pressure sensor, a flow sensor, a temperature sensor, a conductivity sensor, an acceleration sensor and a water level sensor arranged on the injection probe and electrically connected to the PLC controller through the wireless communication module respectively.

[0010] Description: During use, the pressure sensor is used to monitor the pressure of the soil remediation agent entering the soil, so as to facilitate real-time adjustment of the pulse frequency of the pulse generator; the flow sensor is used to monitor the flow of the remediation agent entering the soil; the temperature sensor is used to monitor the remediation agent and the ambient temperature; the conductivity sensor is used to monitor the concentration change of the remediation agent in the soil; the acceleration sensor is used to monitor the ground vibration when the remediation agent is injected into the soil; and the water level sensor is used to monitor the water level change in the injection influence range in real time.

[0011] Further, an outer box body is arranged outside the reagent tank, a filter screen part is arranged on the side wall of the reagent tank, and an opening arc plate is arranged outside the reagent tank and corresponds to the position of the filter screen part; an arc-shaped tooth block is arranged at the top end of the side wall of the opening arc plate; an installation shaft is arranged to penetrate the top end of the outer box body; a small gear meshing connected with the arc-shaped tooth block is arranged at the bottom end of the installation shaft, and a swing arm is arranged at the top end of the installation shaft; a first electric rod movably connected with the swing arm is rotatably connected to the top end of the outer box body; and the input end of the high-pressure pump is connected with the outer box body.

[0012] Description: During use, the remediation agent first enters the inside of the reagent tank, and the mixed plate is used to stir and mix the remediation agent, then the first electric rod is used to drive the swing arm to swing, the installation shaft is used to drive the small gear to rotate, the meshing action of the small gear and the arc-shaped tooth block is used to make the opening arc plate rotate outside the reagent tank, the mixed remediation agent flows into the inside of the outer box body through the filter screen part, and the impurities in the remediation agent are blocked by the filter screen part to avoid the impurities entering the injection pipeline and blocking the injection pipeline.

[0013] Further, the outer box body is connected with the base through the support seat, a blowdown pipe penetrating the reagent tank is arranged at the bottom end of the outer box body; a guide rod is arranged in the mixed plate, cleaning scrapers are movably connected to the two sides of the mixed plate, pull rods are movably connected to the upper and lower ends of the side walls of the two cleaning scrapers, and the pull rods are movably connected with the guide rod; and a second electric rod is arranged between the two pull rods on the same cleaning scraper.

[0014] Description: When the outer box body needs to be cleaned, the second electric rod is used to drive the two pull rods on the same cleaning scraper to open, at this time, the cleaning scraper extends out of the mixed plate and abuts against the inner wall of the outer box body, the mixed motor is used to drive the mixed plate to rotate, the cleaning scraper is used to clean the impurities on the inner wall of the outer box body, and the cleaned impurities are discharged through the blowdown pipe.

[0015] Further, the cross section of the drilling pipe is rectangular structure, and the bottom end of the drilling pipe is movably hinged with four triangular sealing plates; the inner wall of each triangular sealing plate is slidably connected with a pushing seat; the injection probe is slidably connected inside the drilling pipe through a lifting disc, and the bottom end of the lifting disc is provided with a jack rod movably hinged with each pushing seat one by one; the inside of the drilling pipe is provided with a third electric rod connected with the top end of the lifting disc;

[0016] Description: During the process of the drilling pipe entering the soil, the triangular sealing plates are closed to each other to avoid the soil entering the inside of the drilling pipe and blocking the injection probe; when the drilling pipe reaches the predetermined depth, the lifting disc and the injection probe are pushed downward along the inner wall of the drilling pipe by the third electric rod, and at this time, the triangular sealing plates are opened to each other under the pushing action of the jack rod, which is beneficial to improve the use reliability of the device.

[0017] Further, a plurality of guide pipes are provided, and each guide pipe is equidistantly distributed on the mounting bracket; the number of the drilling pipe, the injection probe, the high-pressure pump and the electromagnetic valve corresponds to the number of the guide pipes;

[0018] Description: By arranging a plurality of guide pipes, multi-channel collaborative injection of soil remediation reagents can be realized, the coverage of the soil remediation reagents is improved, and the soil remediation efficiency is improved.

[0019] Further, a sleeve is arranged on the output shaft of the drilling motor and rotatably connected with the mounting bracket, and the driving gear is slidably connected with the sleeve through a sliding plate; a gas cylinder is arranged on the side wall of the mounting bracket and opposite to the drilling motor, and the output end of the gas cylinder is provided with a pneumatic push rod sleeved in the sleeve and rotatably connected with the sliding plate;

[0020] Description: The pneumatic push rod is driven by the gas cylinder to move in the sleeve, so that the driving gear can be engaged with the rack on different drilling pipes, thereby the drilling depth of each drilling pipe can be controlled individually, and the remediation reagents can be injected into the soil at different depths.

[0021] Further, a storage box is arranged at the top end of the mounting bracket; a coil pipe wheel is rotatably connected inside the storage box through a rotating shaft; the number of the coil pipe wheels corresponds to the number of the injection probes, and a reset torsional spring is arranged at the connection between each coil pipe wheel and the rotating shaft;

[0022] Description: The pipeline of the coil pipe wheel device is coiled to avoid the pipeline being pulled and broken during the movement of the drilling pipe, which is beneficial to improve the use reliability of the device.

[0023] The working principle of the present application is as follows:

[0024] Firstly, the remediation reagents are injected into the reagent box, the touch operation screen is touched, the mixing motor is started by the PLC controller, and the mixing plate is rotated by the mixing motor to stir and mix the mixed reagents;

[0025] Then, the drilling motor is started by the PLC controller, the driving gear is rotated by the drilling motor, the drilling pipe is moved downwards in the guide pipe by the meshing of the driving gear and the rack, and the injection probe is brought into the soil;

[0026] Finally, the high-pressure pump, the electromagnetic valve and the pulse generator are started by the PLC controller, the PLC controller sends instructions to the pulse generator through the wireless communication module, the pulse generator transmits the pulse signal to the high-pressure pump through the wireless communication module, and the high-pressure pump injects the repair reagent into the soil through the injection probe at a certain pulse pressure, pulse frequency and pulse duration.

[0027] Compared with the prior art, the beneficial effects of the present application are reflected in the following aspects:

[0028] Firstly, the structure of the present application is reasonable, and the repair reagent is injected into the soil by generating controllable short-time high-pressure pulses, instead of continuous and stable injection pressure, which reduces the preferential flow of the repair reagent in the high-permeability area, enhances the permeability of the repair reagent in the low-permeability area, and improves the distribution of the adsorbed reagent in the soil micropore by overcoming the capillary force through instantaneous high pressure, thereby improving the effect of the repair reagent;

[0029] Secondly, the present application can realize multi-channel collaborative injection of soil repair reagent by setting multiple injection probes, and the injection depth of each injection probe can be controlled independently, thereby improving the coverage of the soil repair reagent and the soil repair efficiency;

[0030] Thirdly, the present application injects the repair reagent into the contaminated soil at a certain pulse pressure, improves the diffusion efficiency of the repair reagent in the contaminated soil, avoids environmental pollution caused by overflow of the repair reagent on the ground surface, and is beneficial to improve the use safety of the device. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a longitudinal sectional view of the present application;

[0032] Figure 2 is a front view of the present application;

[0033] Figure 3 is a top view of the present application;

[0034] Figure 4 is a connection schematic diagram of the outer box body and the reagent tank of the present application;

[0035] Figure 5 is a connection schematic diagram of the cleaning scraper and the mixing plate of the present application;

[0036] Figure 6This is a diagram showing the distribution of the guide tube of the present invention inside the mounting bracket;

[0037] Figure 7 This is a schematic diagram of the connection between the drilling pipe and the guide pipe of the present invention;

[0038] Figure 8 This is a schematic diagram of the connection between the injection probe and the drilling pipe of the present invention;

[0039] Figure 9 This is a schematic diagram of the connection between the pneumatic push rod and the drive gear of the present invention;

[0040] Among them, 1-base, 10-support leg, 11-limiting slot, 2-supply component, 20-reagent box, 200-filter section, 201-opening arc plate, 2010-arc toothed block, 202-mounting shaft, 2020-pinion, 2021-swing arm, 203-first electric rod, 21-mixing plate, 210-through hole, 211-guide rod, 22-mixing motor, 23-outer housing, 230-drain pipe, 24-cleaning scraper, 240-pull rod, 241-second electric rod, 3-injection component, 30-mounting bracket, 31-guide tube, 310 - Sliding slot, 32- Drill pipe, 320- Rack, 321- Triangular sealing plate, 322- Push seat, 323- Top rod, 324- Third electric rod, 325- Guide wheel, 33- Injection probe, 330- Lifting plate, 34- Drilling motor, 340- Drive gear, 3400- Sliding plate, 341- Casing, 35- High pressure pump, 350- Solenoid valve, 36- Pulse generator, 37- Cylinder, 370- Pneumatic push rod, 38- Storage box, 380- Rotating shaft, 381- Coil wheel, 4- Control components, 40- Control box, 41- Operation panel. Detailed Implementation

[0041] Example 1

[0042] like Figure 1 , 3 The pulsed injection device shown is for enhancing the uniformity of repair reagent distribution, including a base 1, a supply component 2, an injection component 3, and a control component 4;

[0043] like Figure 1 As shown, the supply assembly 2 includes a reagent box 20 mounted on the base 1, a mixing plate 21 rotatably engaged inside the reagent box 20, and a mixing motor 22 mounted on the top of the reagent box and providing power to the mixing plate 21.

[0044] like Figure 1 , 2As shown in Figure 3, the injection assembly 3 includes a mounting bracket 30 mounted on the base 1, a guide tube 31 disposed inside the mounting bracket 30, a drill tube 32 slidably engaged inside the guide tube 31 and capable of penetrating the base 1, an injection probe 33 disposed inside the drill tube 32, a drilling motor 34 disposed on the side wall of the mounting bracket 30 and providing power to the drill tube 32, a high-pressure pump 35 disposed on the base 1 with its input end connected to the reagent box 20 and its output end connected to the injection probe 33, and a pulse generator 36 disposed on the base 1 and connected to the high-pressure pump 35. The drill tube 32 adopts existing technology, and a rack 320 penetrating the guide tube 31 is disposed on the side wall of the drill tube 32. A drive gear 340 meshing with the rack 320 is disposed on the output shaft of the drilling motor 34. A solenoid valve 350 is disposed at the connection between the high-pressure pump 35 and the injection probe 33. The maximum pressure of the high-pressure pump is 1000 psi, and the flow rate is 20 GPM. The response time of the pulse generator 36 is 8 ms.

[0045] like Figure 3 As shown, the control component 4 includes a control box 40 mounted on the base 1, an operation panel 41 mounted on the control box 40, a PLC controller, a data storage device, and a wireless communication module mounted inside the control box 40; the data storage device, the wireless communication module, the hybrid motor 22, the drilling motor 34, the high-pressure pump 35, the solenoid valve 350, and the operation panel 41 are electrically connected to the PLC controller.

[0046] Example 2

[0047] The difference between this embodiment and Embodiment 1 is that:

[0048] like Figure 1 As shown, it also includes a monitoring component, which includes a pressure sensor, a flow sensor, a temperature sensor, a conductivity sensor, an acceleration sensor, and a water level sensor, all of which are mounted on the injection probe 33 and electrically connected to the PLC controller via a wireless communication module.

[0049] During use, a pressure sensor monitors the pressure of the soil remediation reagent when it enters the soil, which facilitates real-time adjustment of the pulse frequency of the pulse generator 36. A flow sensor monitors the flow rate of the remediation reagent entering the soil. A temperature sensor monitors the temperature of the remediation reagent and the ambient temperature. A conductivity sensor monitors the concentration change of the remediation reagent in the soil. An acceleration sensor monitors the ground vibration when the remediation reagent is injected into the soil. A water level sensor monitors the water level change within the injection influence area in real time.

[0050] Example 3

[0051] The difference between this embodiment and Embodiment 2 is that:

[0052] like Figure 1、 3 , 4, 5, the reagent tank 20 is externally sleeved with an outer box body 23, a filter screen part 200 is arranged on the side wall of the reagent tank 20, and an opening arc plate 201 is arranged outside the reagent tank 20 and in position correspondence with the filter screen part 200; an arc-shaped tooth block 2010 is arranged at the top end of the side wall of the opening arc plate 201; an installation shaft 202 is arranged at the top end of the outer box body 23 in a penetrating manner; a small gear 2020 meshingly connected with the arc-shaped tooth block 2010 is arranged at the bottom end of the installation shaft 202, and a swing arm 2021 is arranged at the top end of the installation shaft 202; a first electric rod 203 movably hinged with the swing arm 2021 is rotationally clamped at the top end of the outer box body 23; the input end of the high-pressure pump 35 is connected with the outer box body 23; the outer box body 23 is connected with the base 1 through a support seat, and a blowdown pipe 230 penetrating through the reagent tank 20 is arranged at the bottom end of the outer box body 23; a guide rod 211 is arranged inside the mixing plate 21, and cleaning scrapers 24 are movably clamped at the two sides of the mixing plate 21; pull rods 240 are movably hinged at the upper and lower ends of the side walls of the two cleaning scrapers 24, and each pull rod 240 is movably hinged with the guide rod 211; a second electric rod 241 is arranged between the two pull rods 240 on the same cleaning scraper 24;

[0053] The repair reagent first enters the inside of the reagent tank 20, the repair reagent is subjected to stirring and mixing treatment by the mixing plate 21, then the swing arm 2021 is swung by the first electric rod 203, the small gear 2020 is rotated by the installation shaft 202, the opening arc plate 201 is rotated outside the reagent tank 20 by the meshing action of the small gear 2020 and the arc-shaped tooth block 2010, the mixed repair reagent flows into the inside of the outer box body 23 through the filter screen part 200, and the impurities in the repair reagent are blocked by the filter screen part 200, so that the injection pipeline is prevented from being blocked by the impurities; when the outer box body 23 needs to be cleaned, the two pull rods 240 on the same cleaning scraper 24 are opened by the second electric rod 241, at this time, the cleaning scraper 24 extends out of the mixing plate 21 and abuts against the inner wall of the outer box body 23, the mixing plate 21 is rotated by the mixing motor 22, the impurities on the inner wall of the outer box body 23 are cleaned by the cleaning scraper 24, and the cleaned impurities are discharged through the blowdown pipe 230.

[0054] Example 4

[0055] The difference between this example and example 3 is that:

[0056] As Figure 7 、 8As shown, the cross section of the drilling pipe 32 is rectangular structure, the bottom end of the drilling pipe 32 is movably hinged with four triangular sealing plates 321; the inner wall of each triangular sealing plate 321 is slidably connected with a pushing seat 322; the injection probe 33 is slidably connected inside the drilling pipe 32 through the lifting disc 330, the bottom end of the lifting disc 330 is provided with a top rod 323 movably connected with each pushing seat 322 one by one; the inside of the drilling pipe 32 is provided with a third electric rod 324 connected with the top end of the lifting disc 330;

[0057] During the process of the drilling pipe 32 entering the soil, each triangular sealing plate 321 is closed to each other, avoiding the soil entering the inside of the drilling pipe 32 to block the injection probe 33; when the drilling pipe 32 reaches the predetermined depth, the lifting disc 330 and the injection probe 33 are pushed downward along the inner wall of the drilling pipe 32 by the third electric rod 324, at this time, each triangular sealing plate 321 is opened to each other under the pushing action of the top rod 323, which is beneficial to improve the use reliability of the device.

[0058] Embodiment 5

[0059] The difference between this embodiment and embodiment 4 is:

[0060] As shown in Figure 6 , 7 , 9, the guide pipe 31 is provided with six, each guide pipe 31 is equidistantly distributed on the mounting bracket 30; the number of the drilling pipe 32, the injection probe 33, the high-pressure pump 35 and the electromagnetic valve 350 corresponds to the number of the guide pipe 31; the output shaft of the drilling motor 34 is provided with a sleeve 341 rotatably connected with the mounting bracket 30, the driving gear 340 is slidably connected with the sleeve 341 through the sliding plate 3400; the side wall of the mounting bracket 30 and opposite to the drilling motor 34 is provided with the air cylinder 37, the output end of the air cylinder 37 is provided with the pneumatic push rod 370 sleeved in the sleeve 341 and rotatably connected with the sliding plate 3400;

[0061] The pneumatic push rod 370 is driven by the air cylinder 37 to move inside the sleeve 341, so that the driving gear 340 can be engaged with the different racks 320 on the drilling pipe 32, so that the drilling depth of each drilling pipe 32 can be controlled individually, which is convenient for injecting the repair reagent into the soil at different depths; by setting multiple guide pipes 31, the multi-channel collaborative injection of the soil repair reagent can be realized, the coverage range of the soil repair reagent is improved, and the soil repair efficiency is improved.

[0062] Embodiment 6

[0063] The difference between this embodiment and embodiment 5 is:

[0064] As shown in Figure 6As shown, the top end of the mounting bracket 30 is provided with a storage box 38; the inside of the storage box 38 is rotatably connected with a coil wheel 381 through a rotating shaft 380; the number of the coil wheel 381 corresponds to the number of the injection probe 33, and each coil wheel 381 is provided with a reset torsional spring at the connection with the rotating shaft 380;

[0065] The pipeline of the coil wheel 381 device is coiled to avoid the pipeline from being pulled and broken during the movement of the drilling pipe 32, which is beneficial to improve the use reliability of the device.

[0066] Embodiment 7

[0067] The difference between this embodiment and embodiment 6 is that:

[0068] As shown in the figure, Figure 7 the outer wall of the drilling pipe 32 is provided with a guide wheel 325 which is slidably connected with the inner wall of the guide pipe 31;

[0069] By providing the guide wheel 325 on the drilling pipe 32, the stability of the movement of the drilling pipe 32 in the guide pipe 31 is improved, and the meshing effect of the driving gear 340 and the rack 320 is also improved.

[0070] Embodiment 8

[0071] The difference between this embodiment and embodiment 7 is that:

[0072] As shown in the figure, Figure 1 the bottom end of the base 1 is rotatably connected with a supporting leg 10, and the side wall of the base 1 is provided with a limiting clamping groove 11 which is slidably connected with the supporting leg 10;

[0073] Description: By providing the supporting leg 10 at the bottom end of the base 1, the convenience of the device during use is improved.

[0074] It should be noted that the first electric rod 203, the hybrid motor 22, the second electric rod 241, the third electric rod 324, the injection probe 33, the drilling motor 34, the high-pressure pump 35, the electromagnetic valve 350, the pulse generator 36, the air cylinder 37, the operation screen 41, the PLC controller, the data storage, the wireless communication module, the pressure sensor, the flow sensor, the temperature sensor, the conductivity sensor, the acceleration sensor and the water level sensor used in the application all adopt the prior art, and no special limitation is made here, and the corresponding products can be selected according to the actual needs; the connection and control between the PLC controller and the first electric rod 203, the hybrid motor 22, the second electric rod 241, the third electric rod 324, the injection probe 33, the drilling motor 34, the high-pressure pump 35, the electromagnetic valve 350, the pulse generator 36, the air cylinder 37, the operation screen 41, the data storage, the wireless communication module, the pressure sensor, the flow sensor, the temperature sensor, the conductivity sensor, the acceleration sensor and the water level sensor also all adopt the prior art, and no redundant description is made here.

Claims

1. A pulsed injection device for enhancing the uniformity of distribution of a repair agent, characterized in that, It comprises a base (1), a supply assembly (2), an injection assembly (3) and a control assembly (4); The supply assembly (2) comprises a reagent box (20) arranged on the base (1), a mixing plate (21) rotatably clamped in the reagent box (20), and a mixing motor (22) arranged at the top of the reagent box (20) and providing power for the mixing plate (21); The injection assembly (3) comprises a mounting bracket (30) arranged on the base (1), a guide pipe (31) arranged in the mounting bracket (30), a drilling pipe (32) slidably clamped in the guide pipe (31) and capable of penetrating the base (1), an injection probe (33) arranged in the drilling pipe (32), a drilling motor (34) arranged on the side wall of the mounting bracket (30) and providing power for the drilling pipe (32), a high-pressure pump (35) arranged on the base (1) and having an input end connected with the reagent box (20) and an output end connected with the injection probe (33), and a pulse generator (36) arranged on the base (1) and connected with the high-pressure pump (35); a rack (320) is arranged on the side wall of the drilling pipe (32), and a driving gear (340) engaged with the rack (320) is arranged on the output shaft of the drilling motor (34); The control assembly (4) comprises a control box (40) arranged on the base (1), an operation screen (41) arranged on the control box (40), a PLC controller, a data storage and a wireless communication module arranged in the control box (40); The cross section of the drilling pipe (32) is a rectangular structure, and four triangular sealing plates (321) are movably hinged to the bottom end of the drilling pipe (32); a pushing seat (322) is slidably clamped on the inner wall of each triangular sealing plate (321); the injection probe (33) is slidably clamped in the drilling pipe (32) through a lifting disc (330), and a top rod (323) is movably hinged to the bottom end of the lifting disc (330) corresponding to each pushing seat (322); a third electric rod (324) connected with the top end of the lifting disc (330) is arranged in the drilling pipe (32); The guide pipe (31) is provided with a plurality of guide pipes (31), and each guide pipe (31) is equidistantly distributed on the mounting bracket (30); the number of the drilling pipe (32), the injection probe (33) and the high-pressure pump (35) corresponds to the number of the guide pipe (31); A sleeve (341) is rotatably clamped with the mounting bracket (30) on the output shaft of the drilling motor (34), and the driving gear (340) is slidably clamped with the sleeve (341) through a sliding plate (3400); a cylinder (37) is arranged on the side wall of the mounting bracket (30) opposite to the drilling motor (34), and a pneumatic push rod (370) is arranged in the sleeve (341) and rotatably clamped with the sliding plate (3400) on the output end of the cylinder (37).

2. A pulsed injection device for enhancing uniformity of distribution of a repair agent according to claim 1, wherein, The monitoring assembly comprises a pressure sensor, a flow sensor, a temperature sensor, a conductivity sensor, an acceleration sensor and a water level sensor arranged on the injection probe (33) and electrically connected to the PLC controller through the wireless communication module respectively.

3. The pulsed injection device for enhancing uniformity of distribution of a repair agent of claim 1, wherein, The reagent box (20) is externally sleeved with an outer box body (23), a filter screen part (200) is arranged on the side wall of the reagent box (20), and an opening arc plate (201) is arranged outside the reagent box (20) and in position correspondence with the filter screen part (200); an arc-shaped tooth block (2010) is arranged at the top end of the side wall of the opening arc plate (201); an installation shaft (202) is arranged at the top end of the outer box body (23); a small gear (2020) engaged with the arc-shaped tooth block (2010) is arranged at the bottom end of the installation shaft (202), and a swing arm (2021) is arranged at the top end of the installation shaft (202); a first electric rod (203) movably connected with the swing arm (2021) is rotatably clamped at the top end of the outer box body (23); and the input end of the high-pressure pump (35) is connected with the outer box body (23).

4. The pulsed injection device for enhancing uniformity of distribution of a repair agent of claim 3, wherein, The outer box body (23) is connected with the base (1) through a support seat, and the bottom end of the outer box body (23) is provided with a blowdown pipe (230) penetrating through the reagent box (20); the mixing plate (21) is internally provided with a guide rod (211), and cleaning scrapers (24) are movably clamped on both sides of the mixing plate (21); pull rods (240) are movably hinged on the upper and lower ends of the side walls of the two cleaning scrapers (24), and each pull rod (240) is movably hinged with the guide rod (211); and a second electric rod (241) is arranged between the two pull rods (240) on the same cleaning scraper (24).

5. The pulsed injection device for enhancing uniformity of distribution of a repair reagent of claim 1, wherein, The mounting bracket (30) is provided with a storage box (38) at the top end; the storage box (38) is internally rotatably clamped with a coil pipe wheel (381) through a rotating shaft (380); the number of the coil pipe wheels (381) corresponds to the number of the injection probes (33), and each coil pipe wheel (381) is provided with a reset torsional spring at the connection position with the rotating shaft (380).

6. The pulsed injection device for enhancing uniformity of distribution of a repair reagent of claim 1, wherein, The guide pipe (31), the drilling pipe (32), the injection probe (33) and the high-pressure pump (35) are each provided with a plurality of.

Images