Grouting device for municipal engineering pipe jacking construction

Abstract

The invention belongs to the technical field of pipe jacking construction, and particularly relates to a grouting device for municipal engineering pipe jacking construction, the grouting device comprises a supporting pipe and a plurality of pulping machines with different finenesses, an industrial control cabinet is arranged on one side of each pulping machine, the industrial control cabinet and the pulping machines are both arranged on the ground, the supporting pipe is arranged on one side of the tail end of the pipe jacking machine, and the supporting pipe is arranged on the other side of the tail end of the pipe jacking machine. The pipe joint is arranged on the supporting pipe and located between the pipe joint and the pipe jacking machine, the two end plates are installed at the two ends of the supporting pipe respectively, one end plate abuts against the tail of the pipe jacking machine, the other end plate abuts against the end of the pipe joint, and the supporting pipe is sleeved with the material storage sleeve. In the pipe jacking process, slurry can be injected into the gap between the jacking pipe and the hole wall of the soil layer synchronously, the slurry with the proper fineness can be injected into the gap through automatic adjustment based on the change of the permeability of the soil layer, and under the condition that it is guaranteed that the soil layer is stably supported, the situation that the ground is raised or the original structure of the soil layer is excessively damaged due to grouting is avoided as much as possible.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipe jacking construction, and particularly relates to a grouting device for pipe jacking construction in municipal engineering. Background Art

[0002] In municipal engineering, pipe jacking construction is a trenchless underground pipeline laying technology. The precast pipe sections are jacked into the soil layer along the designed route by a pipe jacking machine, avoiding large-scale excavation of the road surface and having little impact on traffic and the environment. Among them, the grouting work is a key link. By injecting slurry between the pipe section and the soil, a mud jacket is formed, which plays a role in reducing resistance, supporting the soil, preventing ground settlement, and ensuring the smooth progress of pipe jacking construction and the stability of the surrounding environment.

[0003] In the pipe jacking construction of municipal engineering, the grouting end usually moves synchronously with the pipe section, and slurry is sprayed into the gap between the hole and the pipe section in real time during the jacking process to fill the gap and support the hole wall to maintain the stability of the soil. However, the soil gaps in different parts of the soil layer vary significantly. If the uniformly prepared slurry is used, it is easy to have problems with poor filling effects. For example, in loose soil areas, the support strength of the slurry is insufficient, and it is difficult to ensure the stability of the hole wall. In soil compact areas, excessive slurry strength may cause ground heave. Although it can be improved by preparing slurries with different finenesses, since the preparation equipment is located on the ground, there is often a situation where the slurry cannot be transported to the corresponding position in time, and even the pipe jacking needs to be suspended waiting for the slurry, which greatly reduces the construction efficiency and affects the project progress and quality. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and provide a grouting device for pipe jacking construction in municipal engineering.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A grouting device for pipe jacking construction in municipal engineering includes a support pipe and multiple slurry making machines with different finenesses. An industrial control cabinet is arranged on one side of the slurry making machine, and both the industrial control cabinet and the slurry making machine are arranged on the ground. The support pipe is arranged on one side of the tail end of the pipe jacking machine and is between the pipe section and the pipe jacking machine. It further includes:

[0006] Two end plates are respectively installed at both ends of the support pipe, and one end plate abuts against the tail of the pipe jacking machine, and the other end plate abuts against the end of the pipe section;

[0007] A storage sleeve is sleeved outside the support pipe and is fixedly installed between the two end plates. A plurality of partition plates are installed inside the storage sleeve, and each partition plate divides the interior of the storage sleeve into a plurality of storage cavities. Each slurry making machine is equipped with a pumping component, and the slurry is transported to the corresponding storage cavity through the pumping component;

[0008] The slurry discharging unit is installed on the outer side of the material storage sleeve, and a slurry feeding component is installed inside each material storage cavity. Each slurry feeding component transports the slurry to the inside of the slurry discharging unit;

[0009] The penetration monitoring mechanism is arranged inside the slurry discharging unit and is used to detect the soil permeability.

[0010] Preferably, the slurry discharging unit includes a rotating sleeve sleeved on the outer side of the material storage sleeve. The rotating sleeve is arranged between two end plates. Rotating rings are installed at both ends of the rotating sleeve, and both rotating rings are rotatably connected to the outer side wall of the material storage sleeve through sealed bearings. A partition ring is rotatably connected to the inside of the rotating sleeve through a sealed bearing, and the partition ring is fixedly sleeved on the outer side of the material storage sleeve. A driving component is installed on the partition ring, and the driving component drives the rotating sleeve to rotate. A plurality of slurry spraying holes are formed in the side wall of the rotating sleeve.

[0011] Preferably, each slurry feeding component includes a mounting cover fixedly installed on the inner wall of the material storage cavity. A slurry pump is fixedly installed inside the mounting cover. The suction end of the slurry pump is communicated with the inside of the material storage cavity. The output end of the slurry pump is provided with a slurry discharging pipe, and the slurry discharging pipe penetrates through the side wall of the material storage sleeve and extends to the inner side of the rotating sleeve. The slurry discharging pipe is communicated with each slurry spraying hole. The slurry pump is electrically connected to the industrial control cabinet.

[0012] Preferably, the penetration monitoring mechanism includes an air pump fixedly installed inside the support pipe. The air supply end of the air pump is provided with an air supply pipe. The air outlet end of the air supply pipe penetrates through the side wall of the material storage sleeve and extends to the inside of the rotating sleeve, and the discharging end of the air supply pipe is arranged on the side of the partition ring away from the slurry spraying holes. A plurality of air outlet conical holes are formed in the side wall of the rotating sleeve on the side of the partition ring away from the slurry spraying holes. A pressure detector is installed on the side wall of the partition ring, and the pressure detector is arranged on the side of the partition ring away from the slurry spraying holes. A blocking component is installed on the outer side wall of the rotating sleeve.

[0013] Preferably, the driving component includes a reduction motor fixedly installed on the side wall of the partition ring. The reduction motor is arranged on the side of the partition ring away from the slurry spraying holes. The output end of the reduction motor is provided with a driving gear. A gear ring is installed on the inner wall of the rotating sleeve, and the inner wall of the gear ring meshes with the driving gear. The reduction motor is electrically connected to the industrial control cabinet.

[0014] Preferably, the blocking component includes two support rings fixedly installed on the outer side of the rotating sleeve. An annular expansion sleeve is jointly installed on the two support rings. A flow dividing component is installed on the inner wall of the rotating sleeve, and the flow dividing component is communicated with the inside of the annular expansion sleeve.

[0015] Preferably, the flow splitting assembly includes a left annular cover and a right annular cover fixedly installed on the inner wall of the rotating sleeve. A plurality of ventilation holes are provided in the inner walls of both the left annular cover and the right annular cover. A first flow splitting electric control valve is installed inside each ventilation hole of the right annular cover, and a second flow splitting electric control valve is installed inside each ventilation hole of the left annular cover. Each of the air outlet conical holes communicates with the inside of the right annular cover. A plurality of circular holes communicating with the left annular cover are provided on the side wall of the rotating sleeve, and each circular hole communicates with the inside of the annular expansion sleeve. Both the first flow splitting electric control valve and the second flow splitting electric control valve are electrically connected to the industrial control cabinet.

[0016] Preferably, two flow splitting pipes are fixedly communicated with the pipe wall of each slurry outlet pipe near the feeding end, and both flow splitting pipes communicate with the inside of the same-side storage cavity. A normally closed electric control valve is installed inside each flow splitting pipe, and a normally open electric control valve is installed near the discharging end inside each slurry outlet pipe. Both the normally closed electric control valve and the normally open electric control valve are electrically connected to the industrial control cabinet.

[0017] Preferably, a slurry pressure detector is installed on the side wall of each installation cover. The industrial control cabinet controls the corresponding pumping assembly to convey slurry into the corresponding storage cavity according to the electric signal fed back by the slurry pressure detector.

[0018] Compared with the existing technology, the advantages of a grouting device for pipe jacking construction in municipal engineering are as follows:

[0019] 1. Through the mutual cooperation of the support pipe, pulping machine, industrial control cabinet, end plate, storage sleeve, multiple partition plates, storage cavities, pumping assemblies, slurry outlet units and slurry outlet assemblies, it is possible to inject slurry into the gap between the hole wall and the pipe joint synchronously as the pipe jacking moves, and slurries with different finenesses can be injected to meet the support requirements of soil layers with different voids. On the premise of ensuring stable soil layer support, it is possible to avoid ground heaving caused by grouting or excessive damage to the original structure of the soil layer as much as possible.

[0020] 2. Through the mutual cooperation of the penetration monitoring mechanism, it is possible to automatically adjust the slurry with appropriate fineness to be conveyed into soil layers with different permeabilities based on the permeability of the soil layer, so that the fineness of the slurry conveyed into the soil layer can be adjusted in a timely and rapid manner based on the soil layer permeability.

[0021] 3. Through the mutual cooperation of the blocking assembly and the flow splitting assembly, the air source of the penetration monitoring mechanism can be utilized to prevent the slurry from moving towards the pipe jacking machine during the stage when the installation of the pipe joint stops moving. On the one hand, it can prevent the slurry from adhering to the side wall of the pipe jacking machine, and on the other hand, it can ensure the forming support effect of the just-injected slurry. Description of the Drawings

[0022] Figure 1It is a schematic structural diagram of a grouting device for pipe jacking construction in municipal engineering provided by the present invention;

[0023] Figure 2 It is a schematic diagram of the positions of the end plate, pipe joint and pipe jacking machine of a grouting device for pipe jacking construction in municipal engineering provided by the present invention;

[0024] Figure 3 It is a three-dimensional structural diagram of the rotating sleeve of a grouting device for pipe jacking construction in municipal engineering provided by the present invention;

[0025] Figure 4 It is a schematic connection structure diagram of the partition plate and the end plate of a grouting device for pipe jacking construction in municipal engineering provided by the present invention;

[0026] Figure 5 It is a schematic internal structure diagram of the support sleeve of a grouting device for pipe jacking construction in municipal engineering provided by the present invention;

[0027] Figure 6 It is a grouting device for pipe jacking construction in municipal engineering provided by the present invention Figure 5 The enlarged structure diagram of part A in;

[0028] Figure 7 It is a schematic side view connection structure diagram of the support sleeve and the rotating sleeve of a grouting device for pipe jacking construction in municipal engineering provided by the present invention;

[0029] Figure 8 It is a grouting device for pipe jacking construction in municipal engineering provided by the present invention Figure 7 The enlarged structure diagram of part B in.

[0030] In the figure: 1 support pipe, 2 pulp making machine, 3 industrial control cabinet, 4 pipe jacking machine, 5 pipe joint, 6 end plate, 7 material storage sleeve, 8 partition plate, 9 material storage cavity, 10 pumping component, 11 slurry outlet unit, 111 rotating sleeve, 112 rotating ring, 113 partition ring, 114 slurry spraying hole, 12 slurry feeding component, 121 installation cover, 122 slurry pump, 123 slurry outlet pipe, 13 penetration monitoring mechanism, 131 air pump, 132 air supply pipe, 133 air outlet conical hole, 134 air pressure detector, 14 driving component, 141 reduction motor, 142 driving gear, 143 gear ring, 15 blocking component, 151 support ring, 152 annular expansion sleeve, 16 flow splitting component, 161 left annular cover, 162 right annular cover, 163 first flow splitting electric control valve, 164 second flow splitting electric control valve, 165 round hole, 17 flow splitting pipe, 18 normally closed electric control valve, 19 normally open electric control valve, 20 slurry pressure detector. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0032] As Figures 1 - 8 shown, a grouting device for pipe jacking construction in municipal engineering includes a support pipe 1 and a plurality of pulp making machines 2 with different fineness. An industrial control cabinet 3 is arranged on one side of the pulp making machine 2, and both the industrial control cabinet 3 and the pulp making machine 2 are arranged on the ground. The support pipe 1 is arranged on one side of the tail end of the pipe jacking machine 4 and is between the pipe section 5 and the pipe jacking machine 4. It further includes: two end plates 6, which are respectively installed at both ends of the support pipe 1. One end plate 6 abuts against the tail of the pipe jacking machine 4, and the other end plate 6 abuts against the end of the pipe section 5. A storage sleeve 7 is sleeved outside the support pipe 1 and is fixedly installed between the two end plates 6. A plurality of partition plates 8 are installed inside the storage sleeve 7, and each partition plate 8 divides the inside of the storage sleeve 7 into a plurality of storage cavities 9. Each pulp making machine 2 is equipped with a pumping assembly 10, and the pumping assembly 10 conveys the pulp to the corresponding storage cavity 9. Among them, the end plate 6 can be disassembled from the support pipe 1 and the storage sleeve 7.

[0033] The slurry discharging unit 11 is installed outside the storage sleeve 7, and a slurry conveying assembly 12 is installed inside each storage cavity 9. Each slurry conveying assembly 12 conveys the slurry to the inside of the slurry discharging unit 11. The slurry discharging unit 11 includes a rotating sleeve 111 sleeved outside the storage sleeve 7, and the rotating sleeve 111 is arranged between the two end plates 6. Rotating rings 112 are installed at both ends of the rotating sleeve 111, and both rotating rings 112 are rotatably connected to the outer side wall of the storage sleeve 7 through sealed bearings. A partition ring 113 is rotatably connected to the inside of the rotating sleeve 111 through a sealed bearing, and the partition ring 113 is fixedly sleeved outside the storage sleeve 7. A driving assembly 14 is installed on the partition ring 113, and the driving assembly 14 drives the rotating sleeve 111 to rotate. A plurality of slurry spraying holes 114 are formed in the side wall of the rotating sleeve 111. The driving assembly 14 includes a reduction motor 141 fixedly installed on the side wall of the partition ring 113, and the reduction motor 141 is arranged on the side of the partition ring 113 away from the slurry spraying holes 114. A driving gear 142 is installed at the output end of the reduction motor 141. A gear ring 143 is installed on the inner wall of the rotating sleeve 111, and the inner wall of the gear ring 143 meshes with the driving gear 142. The reduction motor 141 is electrically connected to the industrial control cabinet 3. Among them, the rotating ring 112 and the rotating sleeve 111 can be disassembled to facilitate the cleaning of the internal slurry.

[0034] Each slurry feeding component 12 includes a mounting cover 121 fixedly installed on the inner wall of the storage cavity 9, and a slurry pump 122 is fixedly installed inside the mounting cover 121. The suction end of the slurry pump 122 is communicated with the inside of the storage cavity 9. An outlet pipe 123 is installed at the output end of the slurry pump 122, and the outlet pipe 123 penetrates through the side wall of the storage sleeve 7 and extends to the inside of the rotating sleeve 111. The outlet pipe 123 is communicated with each slurry spraying hole 114. The slurry pump 122 is electrically connected to the industrial control cabinet 3.

[0035] The penetration monitoring mechanism 13 is arranged inside the slurry discharging unit 11 and is used for detecting the soil permeability. The penetration monitoring mechanism 13 includes an air pump 131 fixedly installed inside the support pipe 1. An air supply pipe 132 is installed at the air supply end of the air pump 131. The air outlet end of the air supply pipe 132 penetrates through the side wall of the storage sleeve 7 and extends to the inside of the rotating sleeve 111. The discharging end of the air supply pipe 132 is arranged on the side of the partition ring 113 away from the slurry spraying hole 114. A plurality of air outlet conical holes 133 are formed in the side wall of the rotating sleeve 111 on the side of the partition ring 113 away from the slurry spraying hole 114. A pressure detector 134 is installed on the side wall of the partition ring 113 and is arranged on the side of the partition ring 113 away from the slurry spraying hole 114. A blocking component 15 is installed on the outer side wall of the rotating sleeve 111. The blocking component 15 includes two support rings 151 fixedly installed on the outer side of the rotating sleeve 111, and an annular expansion sleeve 152 is jointly installed on the two support rings 151. A flow dividing component 16 is installed on the inner wall of the rotating sleeve 111, and the flow dividing component 16 is communicated with the inside of the annular expansion sleeve 152. The expanded annular expansion sleeve 152 can block the movement of the slurry towards the direction of the pipe jacking machine 4.

[0036] The flow dividing component 16 includes a left annular cover 161 and a right annular cover 162 fixedly installed on the inner wall of the rotating sleeve 111. A plurality of ventilation holes are formed in the inner walls of the left annular cover 161 and the right annular cover 162. A first flow dividing electric control valve 163 is installed inside each ventilation hole of the right annular cover 162, and a second flow dividing electric control valve 164 is installed inside each ventilation hole of the left annular cover 161. Each air outlet conical hole 133 is communicated with the inside of the right annular cover 162. A plurality of circular holes 165 communicated with the left annular cover 161 are formed in the side wall of the rotating sleeve 111, and each circular hole 165 is communicated with the inside of the annular expansion sleeve 152. The first flow dividing electric control valve 163 and the second flow dividing electric control valve 164 are both electrically connected to the industrial control cabinet 3, which can facilitate the air flow to enter the inside of the annular expansion sleeve 152.

[0037] At the position of the pipe wall of each slurry outlet pipe 123 close to the feeding end, two shunt pipes 17 are fixedly connected, and both shunt pipes 17 are connected to the inside of the storage chamber 9 on the same side. A normally closed electric control valve 18 is installed inside each shunt pipe 17. At the position of each slurry outlet pipe 123 close to the discharging end, a normally open electric control valve 19 is installed. Both the normally closed electric control valve 18 and the normally open electric control valve 19 are electrically connected to the industrial control cabinet 3. When the storage chambers 9 do not need to be grouted temporarily, the industrial control cabinet 3 controls each slurry pump 122 to work, controls each normally open electric control valve 19 to close, and controls the normally closed electric control valve 18 to open. At this time, the slurry pump 122 can pump out the slurry inside the corresponding storage chamber 9 and return it to the inside of the storage chamber 9 through the slurry outlet pipe 123 and the shunt pipe 17, so that the slurry inside the storage chamber 9 keeps circulating to avoid the influence of slurry sedimentation on the grouting effect.

[0038] A slurry pressure detector 20 is installed on the side wall of each mounting cover 121. The industrial control cabinet 3 controls the corresponding pumping assembly 10 to convey slurry into the corresponding storage chamber 9 according to the electrical signal fed back by the slurry pressure detector 20. The slurry pressure detector 20 can detect the slurry pressure inside the storage chamber 9. After the slurry pressure detector 20 detects that the slurry pressure inside the storage chamber 9 disappears, the slurry pressure detector 20 will feed back an electrical signal to the industrial control cabinet 3. At this time, the industrial control cabinet 3 controls the corresponding pumping assembly 10 to supply slurry into the storage chamber 9.

[0039] Now, the operation principle of the present invention is described as follows: During pipe jacking construction, after the pipe jacking machine 4 is lowered into the working well and jacked into the soil layer through the pressing structure, the entire device of the support pipe 1 is placed on the slide rail, so that the end plate 6 close to the air outlet conical hole 133 abuts against the side wall of the pipe jacking machine 4, and then continue to jack in. After the end plate 6 on the side far from the pipe jacking machine 4 is also jacked into the soil layer, the pipe joints 5 to be laid are placed in sequence and jacked into the soil layer (after the support pipe 1 is jacked in, it is necessary to lay the grouting pipeline and lay the circuit so that the industrial control cabinet 3 can control the electrical appliances around the support pipe 1, such as the slurry pump 122). Then, different fineness slurries are prepared by each slurry making machine 2, and the different fineness slurries are conveyed into the corresponding storage chambers 9 through the pumping assemblies 10. Generally, the slurries are divided into fine, medium, and coarse fineness. As the slurry inside the storage chamber 9 increases, at this time, the slurry pressure detector 20 installed inside the slurry will detect an increase in the slurry pressure, and when it reaches the highest threshold, the slurry pressure detector 20 feeds back an electrical signal to the industrial control cabinet 3. At this time, the industrial control cabinet 3 controls the corresponding pumping assembly 10 to stop working;

[0040] During the pipe jacking process, the industrial control cabinet 3 starts the air pump 131 to work, keeps each first shunt electronic control valve 163 open, and keeps the second shunt electronic control valve 164 closed. The air pump 131 can suck in external air and send it into the inside of the rotating sleeve 111 through the air supply pipe 132. Due to the separation effect of the separation ring 113, the air flow can only be ejected through each air outlet conical hole 133 at the right annular cover 162. When the soil is relatively loose and has large pores, the air flow can quickly penetrate into the pores, so that the air flow is quickly discharged. At this time, because the air flow discharge speed inside the rotating sleeve 111 is fast, the air pressure detector 134 inside the rotating sleeve 111 detects that the air pressure is low. At this time, the electrical signal intensity fed back by the air pressure detector 134 to the industrial control cabinet 3 is low. When the electrical signal intensity is lower than 10 milliamperes, the industrial control cabinet 3 controls the slurry pump 122 in the storage chamber 9 storing the slurry with too large fineness to work. The slurry pump 122 can pump out the slurry with too large fineness and transport the slurry to the inside of the rotating sleeve 111 through the slurry outlet pipe 123. Subsequently, the slurry is ejected through each slurry spraying hole 114, so as to inject the slurry into the gap between the soil hole wall and the outer wall of the pipe joint 5. For a soil layer with large pores and high permeability coefficient, if fine slurry is used, the slurry will quickly flow away through the soil pores and cannot form an effective protection circle around the pipe joint 5, and cannot play a good role in reinforcement and filling. Therefore, by injecting the slurry with too large fineness, it can ensure the filling sufficiency of the slurry at the loose soil hole wall. The support strength of the solidified slurry is higher and it is not easy to collapse. When the electrical signal fed back by the air pressure detector 134 to the industrial control cabinet 3 is higher than 10 milliamperes and not higher than 15 milliamperes, the industrial control cabinet 3 controls the slurry pump 122 with medium fineness to work and injects the slurry with medium fineness into the soil. When the electrical signal fed back by the air pressure detector 134 to the industrial control cabinet 3 is higher than 15 milliamperes, under the control of the industrial control cabinet 3, the slurry with too small fineness can be injected into the soil to ensure that the slurry with smaller fineness can penetrate into the soil with smaller pores. Based on different soil permeabilities, timely adjusting the injection of the slurry with appropriate fineness into the soil can ensure the stability of the soil support and avoid excessive pressure of the slurry on the soil, resulting in ground heave or excessive damage to the soil layer structure, causing subsequent instability phenomena;

[0041] Among them, during the grouting process, the industrial control cabinet 3 will control the reduction motor 141 to work. The reduction motor 141 will drive the gear ring 143 through the driving gear 142, and the gear ring 143 can drive the rotating sleeve 111 to rotate synchronously. Therefore, each slurry spraying hole 114 will rotate synchronously, so as to ensure that the annular gap between the hole wall and the outer wall of the pipe joint 5 can be evenly and fully injected with slurry, which is beneficial to improving the roundness of the solidified slurry and having high support stability;

[0042] Secondly, since the pipe jacking machine 4 does not move continuously because the pipe segment 5 needs to be re-lifted and installed after each pipe segment 5 is jacked in, at this time, the slurry just injected into the hole wall is likely to move towards the pipe jacking machine 4. To prevent such a phenomenon, when the pipe jacking machine 4 stops moving, the industrial control cabinet 3 controls each second shunt electric control valve 164 at the left annular cover 161 to open, and controls each first shunt electric control valve 163 inside the right annular cover 162 to close. At this time, the airflow conveyed by the air pump 131 will enter the inside of the annular expansion sleeve 152 through the ventilation holes at the left annular cover 161 and each round hole 165. As the injected airflow increases, the annular expansion sleeve 152 begins to expand and abuts against the soil layer hole wall. At this time, the annular expansion sleeve 152 cannot continue to expand, so the air pressure detected by the air pressure detector 134 will rise to the threshold value (this threshold value is different from the air pressure threshold value for detecting the soil permeability described above and can be set based on parameters such as the diameter of the pipe segment 5). At this time, the air pressure detector 134 will feedback an electrical signal to the industrial control cabinet 3, and the industrial control cabinet 3 will control the air pump 131 to suspend operation. Due to the expansion of the annular expansion sleeve 152 and its abutment against the soil layer hole wall, the slurry just injected cannot flow towards the pipe jacking machine 4. That is, it can avoid the influence of the slurry flow on the subsequent support effect and also avoid the slurry adhering to the side wall of the pipe jacking machine 4. When the pipe jacking machine 4 continues to move, the industrial control cabinet 3 first controls all the second shunt electric control valves 164 and the first shunt electric control valves 163 to open, so that the excess air inside the annular expansion sleeve 152 is discharged. After 5 seconds, the industrial control cabinet 3 will, according to the foregoing steps, control the detection of the soil permeability and the grouting of the soil layer hole wall.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A grouting device for pipe jacking construction in municipal engineering, comprising a support pipe (1) and multiple pulpers (2) with different fineness. One side of the pulper (2) is provided with an industrial control cabinet (3), and both the industrial control cabinet (3) and the pulper (2) are arranged on the ground. The support pipe (1) is arranged on one side of the tail end of the pipe jacking machine (4) and is between the pipe segment (5) and the pipe jacking machine (4). It is characterized in that, It further includes: Two end plates (6), which are respectively installed at both ends of the support pipe (1), and one end plate (6) abuts against the tail of the pipe jacking machine (4), and the other end plate (6) abuts against the end of the pipe segment (5); A material storage sleeve (7), which is sleeved on the outside of the support pipe (1) and fixedly installed between the two end plates (6). A plurality of partition plates (8) are installed inside the material storage sleeve (7), and each partition plate (8) divides the inside of the material storage sleeve (7) into a plurality of material storage cavities (9). Each of the pulping machines (2) is equipped with a pumping assembly (10), and the pumping assembly (10) is used to convey the pulp to the corresponding material storage cavity (9); A pulp discharging unit (11), which is installed on the outside of the material storage sleeve (7), and a pulp conveying assembly (12) is installed inside each material storage cavity (9). Each pulp conveying assembly (12) conveys the pulp to the inside of the pulp discharging unit (11); A penetration monitoring mechanism (13), which is arranged inside the pulp discharging unit (11) and used to detect the soil permeability.

2. The grouting device for pipe jacking construction in municipal engineering according to claim 1, characterized in that, The pulp discharging unit (11) includes a rotating sleeve (111) sleeved on the outside of the material storage sleeve (7), and the rotating sleeve (111) is arranged between the two end plates (6). Rotating rings (112) are installed at both ends of the rotating sleeve (111), and both rotating rings (112) are rotatably connected to the outer side wall of the material storage sleeve (7) through sealed bearings. A partition ring (113) is rotatably connected to the inside of the rotating sleeve (111) through a sealed bearing, and the partition ring (113) is fixedly sleeved on the outside of the material storage sleeve (7). The partition ring (113) is equipped with a driving assembly (14), and the driving assembly (14) drives the rotating sleeve (111) to rotate. A plurality of slurry spraying holes (114) are formed in the side wall of the rotating sleeve (111).

3. A grouting device for pipe jacking construction in municipal engineering according to claim 2, characterized in that, Each of the pulp conveying assemblies (12) includes a mounting cover (121) fixedly installed on the inner wall of the material storage cavity (9), and a slurry pump (122) is fixedly installed inside the mounting cover (121). The suction end of the slurry pump (122) is communicated with the inside of the material storage cavity (9). The output end of the slurry pump (122) is provided with a slurry discharging pipe (123), and the slurry discharging pipe (123) penetrates through the side wall of the material storage sleeve (7) and extends to the inside of the rotating sleeve (111). The slurry discharging pipe (123) is communicated with each slurry spraying hole (114). The slurry pump (122) is electrically connected to the industrial control cabinet (3).

4. A grouting device for pipe jacking construction in municipal engineering according to claim 2, characterized in that, The penetration monitoring mechanism (13) includes an air pump (131) fixedly installed inside the support pipe (1), and an air supply pipe (132) is installed at the air supply end of the air pump (131). The air outlet end of the air supply pipe (132) penetrates through the side wall of the material storage sleeve (7) and extends into the inside of the rotating sleeve (111), and the discharge end of the air supply pipe (132) is arranged on the side of the partition ring (113) away from the spraying holes (114). A plurality of air outlet conical holes (133) are formed in the side wall of the rotating sleeve (111) on the side of the partition ring (113) away from the spraying holes (114). A pressure detector (134) is installed on the side wall of the partition ring (113), and the pressure detector (134) is arranged on the side of the partition ring (113) away from the spraying holes (114). A blocking component (15) is installed on the outer side wall of the rotating sleeve (111).

5. The grouting device for pipe jacking construction in municipal engineering according to claim 2, characterized in that, The driving component (14) includes a reduction motor (141) fixedly installed on the side wall of the partition ring (113), and the reduction motor (141) is arranged on the side of the partition ring (113) away from the spraying holes (114). A driving gear (142) is installed at the output end of the reduction motor (141). A gear ring (143) is installed on the inner wall of the rotating sleeve (111), and the inner wall of the gear ring (143) meshes with the driving gear (142). The reduction motor (141) is electrically connected to the industrial control cabinet (3).

6. The grouting device for pipe jacking construction in municipal engineering according to claim 4, characterized in that, The blocking component (15) includes two support rings (151) fixedly installed on the outside of the rotating sleeve (111), and an annular expansion sleeve (152) is jointly installed on the two support rings (151). A flow splitting component (16) is installed on the inner wall of the rotating sleeve (111), and the flow splitting component (16) is communicated with the inside of the annular expansion sleeve (152).

7. A grouting device for pipe jacking construction in municipal engineering according to claim 6, characterized in that, The flow splitting component (16) includes a left annular cover (161) and a right annular cover (162) fixedly installed on the inner wall of the rotating sleeve (111). A plurality of ventilation holes are formed in the inner walls of the left annular cover (161) and the right annular cover (162), and a first flow splitting electric control valve (163) is installed inside each ventilation hole of the right annular cover (162). A second flow splitting electric control valve (164) is installed inside each ventilation hole of the left annular cover (161). Each of the air outlet conical holes (133) is communicated with the inside of the right annular cover (162). A plurality of circular holes (165) communicated with the left annular cover (161) are formed in the side wall of the rotating sleeve (111), and each of the circular holes (165) is communicated with the inside of the annular expansion sleeve (152). The first flow splitting electric control valve (163) and the second flow splitting electric control valve (164) are both electrically connected to the industrial control cabinet (3).

8. A grouting device for pipe jacking construction in municipal engineering according to claim 3, characterized in that, At the position of the pipe wall of each slurry outlet pipe (123) near the feeding end, two shunt pipes (17) are fixedly communicated, and both of the two shunt pipes (17) are communicated with the inside of the storage cavity (9) on the same side. A normally closed electric control valve (18) is installed inside each shunt pipe (17). At the position of the inside of each slurry outlet pipe (123) near the discharging end, a normally open electric control valve (19) is installed. The normally closed electric control valve (18) and the normally open electric control valve (19) are both electrically connected to the industrial control cabinet (3).

9. A grouting device for pipe jacking construction in municipal engineering according to claim 3, characterized in that, A slurry pressure detector (20) is installed on the side wall of each mounting cover (121). The industrial control cabinet (3) controls the corresponding pumping assembly (10) to convey slurry into the corresponding storage cavity (9) according to the electrical signal fed back by the slurry pressure detector (20).

Images