Slurry delivery mechanism for a tunneling machine and system thereof

Abstract

The application discloses a slurry discharge pump conveying mechanism and system for a shield tunneling machine, and a slurry discharge pump; a blockage prevention structure is connected with the slurry discharge pump at one end and connected with a slurry inlet pipe at the other end. The plurality of crushing structures can crush large-particle impurities, and then the first filter screen is used for filtering, so that the impurities entering the slurry discharge pump are small-particle impurities, and large-particle impurities are prevented from directly blocking the slurry discharge pump. The blockage prevention structure and the slurry inlet pipe are arranged between the slurry discharge pump and the buffer tank, the valve body and the crusher on the blockage prevention structure and the slurry inlet pipe can prevent long-term deposition and blockage in the slurry discharge pump pipeline. At least two slurry discharge pumps and the blockage prevention structure are used to extract the slurry in the discharge area, which can speed up the slurry extraction efficiency, and when a problem occurs in one slurry discharge pump, the slurry extraction work can be stopped. The plurality of slurry discharge pumps, the plurality of channels and the plurality of slurry inlet pipes can ensure that the slurry extraction work is continuously and uninterruptedly carried out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slurry discharge pumps, in particular to a slurry discharge pump conveying mechanism for a shield tunneling machine and a system thereof. BACKGROUND

[0002] The rapid development of cities is an important part of the construction blueprint, and the construction of roads is one of the cores of urban construction. As a key equipment for tunnel construction, the shield tunneling machine plays an important role in large road and tunnel construction. In the process of tunneling, the slurry discharge pump is an important part. The slurry discharge pump is mainly used to remove the waste materials such as soil and slurry generated by the tunnel boring machine during excavation, to ensure the cleanliness of the tunnel interior and to maintain the normal operation of the shield tunneling machine.

[0003] The existing slurry discharge pump is prone to blockage of the pipeline due to impurities, leaves and large particle block-shaped objects in the surface mud water during use, thereby affecting the pumping operation of the slurry pump and causing damage, which greatly reduces the service life of the slurry pump. In order to solve the problem of blockage, most devices are provided with a crushing component in front of the slurry pump. However, due to the residues in the slurry, the pipeline is still blocked after a long time of operation, which reduces the flow of pumped slurry and even interrupts the work process in severe cases. SUMMARY

[0004] The present application aims to solve the problems existing in the prior art. The slurry discharge pump conveying mechanism for a shield tunneling machine comprises a slurry discharge pump, a blockage prevention structure, a crushing structure, a first filter screen, a discharge mechanism, a first valve body assembly, a second valve body assembly, a detection assembly, a control box and a pumping mechanism. The blockage prevention structure is connected to one end of the slurry discharge pump and the other end of the slurry discharge pump is connected to an inlet pipe. The blockage prevention structure is used to keep the slurry discharge of the slurry discharge pump unobstructed. The crushing structure is connected inside a buffer tank. The buffer tank is used to receive the slurry discharged from the slurry tank of the shield tunneling machine. One side of the buffer tank is connected to the inlet pipe. The first filter screen is arranged inside the buffer tank. The first filter screen is used to divide the internal area of the buffer tank into a crushing area and a discharge area. The discharge mechanism is arranged below the buffer tank. The blockage prevention structure comprises a first channel and a second channel. The first valve body assembly is arranged in the middle of the first channel and the second channel. The first valve body assembly is provided with a crusher on one side. The second valve body assembly is arranged on the inlet pipe. The detection assembly is arranged on the first valve body assembly and the second valve body assembly. The detection assembly is used to detect the flow rate of the slurry in the blockage prevention structure and the inlet pipe. The control box is arranged on one side of the slurry discharge pump. The pumping mechanism is arranged on one side of the buffer tank.

[0005] As a further description of the above technical solution, the buffer tank is provided with a material guiding inclined table. The material guiding inclined table is provided with a pushing cylinder. One end of the pushing cylinder is connected to a partition plate. The partition plate is arranged above the discharge mechanism.

[0006] As a further description of the above technical solution: the crushing structure comprises a drive box, one end of the drive box is connected with a drive rod, a crushing disc is arranged on the drive rod, and the crushing disc is located above the material guide inclined table.

[0007] As a further description of the above technical solution: the material discharging mechanism comprises a second filter screen, a water collecting box is arranged below the second filter screen, a collecting box is arranged on one side of the water collecting box, and the water collecting box is connected with a pumping mechanism through a water guide pipe.

[0008] As a further description of the above technical solution: the first valve body assembly comprises a valve body, first and second valves are arranged at two ends of the valve body respectively, and the first valve body assembly has the same structure as the second valve body assembly.

[0009] As a further description of the above technical solution: the detection assembly comprises a pressure sensor and a flow sensor.

[0010] As a further description of the above technical solution: the pumping mechanism comprises a pump box, a pump body is arranged in the pump box, one end of the pump body is connected with the water guide pipe, the other end of the pump body is connected with a drain pipe, and a plurality of spray heads are arranged at equal intervals on the drain pipe.

[0011] As a further description of the above technical solution: the anti-blocking structure is provided with two, and the number of the anti-blocking structures corresponds to the number of the slurry pumps one by one, and two first valve body assemblies are arranged on each anti-blocking structure.

[0012] As a further description of the above technical solution: the spray head is located above the crushing structure.

[0013] Another object of the present application is to provide a slurry pump conveying system of a shield tunneling machine, a control module is arranged in the control box, and is used for closing the corresponding passage when the passage is blocked;

[0014] A first data acquisition module is arranged on the control box, and is used for acquiring the pressure value and the flow value detected by the detection assembly.

[0015] A second data acquisition module is arranged on the control box, and is used for acquiring the pressure value and the flow value detected by the detection assembly.

[0016] A judgment module is used for judging whether the passage is blocked or not, and when the pressure value and the flow value are both greater than the program setting value, the passage is judged to be in a blocked state.

[0017] The above technical solution has the following advantages or beneficial effects:

[0018] 1. The present invention passes the mud into the buffer box, and can crush large particles of debris through multiple crushing structures, and then filters it through the first filter screen, so that the debris entering the slurry pump is all small particles, avoiding direct blockage of the slurry pump by large particles of debris, and then provides an anti-blocking structure and a slurry inlet pipe between the slurry pump and the buffer box. Through multiple slurry pumps, multiple channels and multiple slurry inlet pipes, it can ensure that the slurry pumping work is carried out continuously and uninterruptedly without interruption due to blockage maintenance, thereby improving construction efficiency.

[0019] 2. The present invention can filter large particles of debris in the mud onto the partition through the setting of the first filter screen, and can filter the crushed large particles of debris through the second filter screen. The large particles of debris will fall into the collection box for collection, and the excess mud and water will fall into the water collection box for collection. By separating the mud and water from the debris, it is convenient to take out and collect the debris in the water collection box later.

[0020] 3. The present invention provides a water pipe under the water collecting box and connects it to the pump body. Through the operation of the pump body, the muddy water collected in the water collecting box can be re-directed into the buffer box for recycling. The muddy water sprayed out by the nozzle can flush the mud that has just entered, reduce the viscosity of the muddy water, and facilitate cutting by the crushing disc.

[0021] 4. The present invention uses mud to flush the debris in the buffer box, thereby pushing the large-particle slurry residue on the top inclined surface of the material guide ramp along the inclined surface, which can realize the water flow pushing effect on the large-particle slurry residue, effectively improve the sliding effect of the large-particle slurry residue, thereby improving the discharge efficiency of the large-particle slurry residue and avoiding the occurrence of residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a slurry pump conveying mechanism according to an embodiment of the present invention;

[0023] Figure 2 A cross-sectional view of a slurry pump conveying mechanism according to an embodiment of the present invention;

[0024] Figure 3 A top view of a slurry pump conveying mechanism according to an embodiment of the present invention;

[0025] Figure 4 for Figure 2 Schematic diagram of the anti-blocking structure in the slurry pump conveying mechanism;

[0026] Figure 5 for Figure 2 Structural diagram of the pumping mechanism in the slurry pump delivery mechanism;

[0027] Figure 6 This is a system flow chart of a slurry pump conveying mechanism according to an embodiment of the present invention.

[0028] Legend:

[0029] 1. Slurry discharge pump; 2. Anti-blocking structure; 3. Crushing structure; 4. Slurry inlet pipe; 5. Buffer box; 6. First filter screen; 7. Discharge mechanism; 8. First valve body assembly; 9. Crusher; 10. Second valve body assembly; 11. Detection assembly; 12. Material guide ramp; 13. Push cylinder; 14. Partition; 15. Control box; 16. Pumping mechanism; 17. Water guide pipe; 201. First channel; 202. Second channel; 31. Drive box; 32. Drive rod; 33. Crushing disc; 71. Second filter screen; 72. Water collection box; 73. Collection box; 81. Valve body; 82. First valve; 83. Second valve; 1601. Pump box; 1602. Pump body; 1603. Drain pipe; 1604. Nozzle; 001. Control module; 002. First data acquisition module; 003. Second data acquisition module; 004. Judgment module DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "arranged," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] Example 1:

[0034] like Figures 1-5 As shown, the slurry pump conveying mechanism for a shield machine of the present invention comprises:

[0035] The slurry discharge pump 1; the anti-blocking structure 2, one end of the anti-blocking structure 2 is connected with the slurry discharge pump 1, the other end of the anti-blocking structure 2 is connected with the slurry inlet pipe 4, the anti-blocking structure 2 is used for keeping the slurry discharge of the slurry discharge pump 1 unobstructed; the crushing structure 3 is connected inside the buffer tank 5, the buffer tank 5 is used for receiving the slurry discharged by the slurry chamber inside the shield tunneling machine, one side of the buffer tank 5 is connected with the slurry inlet pipe 4; the first filter screen 6 is arranged inside the buffer tank 5, the first filter screen 6 is used for dividing the internal region of the buffer tank 5 into a crushing area and a discharge area, the discharge mechanism 7 is arranged below the buffer tank 5; the anti-blocking structure 2 includes the first channel 201 and the second channel 202, the first valve body assembly 8 is arranged in the middle of the first channel 201 and the second channel 202, the crusher 9 is arranged on one side of the first valve body assembly 8, the second valve body assembly 10 is arranged on the slurry inlet pipe 4, the detection assembly 11 is arranged on the first valve body assembly 8 and the second valve body assembly 10, the detection assembly 11 is used for detecting the slurry flow rate in the anti-blocking structure 2 and the slurry inlet pipe 4, the control box 15 is arranged on one side of the slurry discharge pump 1, the pumping mechanism 16 is arranged on one side of the buffer tank 5, the anti-blocking structure 2 is provided with two, and the number corresponds to the slurry discharge pump 1 one by one, two first valve body assemblies 8 are arranged on each anti-blocking structure 2.

[0036] In the embodiment, by passing the slurry into the buffer tank 5, the large-particle impurities can be crushed by the plurality of crushing structures 3, and then filtered by the first filter screen 6, so that the impurities entering the slurry discharge pump 1 are all small-particle impurities, avoiding that the large-particle impurities directly block the slurry discharge pump 1, and by arranging the anti-blocking structure 2 and the slurry inlet pipe 4 between the slurry discharge pump 1 and the buffer tank 5, the valve body and the crusher 9 on the anti-blocking structure 2 and the slurry inlet pipe 4 can avoid long-term deposition and blockage in the pipeline of the slurry discharge pump 1, by using at least two slurry discharge pumps 1 and anti-blocking structures 2 to extract the slurry in the discharge area, the slurry extraction efficiency can be improved, and when one slurry discharge pump 1 fails, the slurry extraction work does not need to be stopped, by using the plurality of slurry discharge pumps 1, the plurality of channels and the plurality of slurry inlet pipes 4, the slurry extraction work can be continuously and uninterruptedly carried out, and the work efficiency can be improved.

[0037] The mud produced in the working process can be pumped out through the inlet pipe 4, and then the mud can be input into the mud discharge pump 1 through multiple channels respectively, and only one channel is opened at a time through each anti-blocking structure 2, and the other channels are in a closed state, and the channel pipe body is provided with a first valve body assembly 8 and a breaker 9, and the opening and closing of the channel and the inlet pipe 4 can be controlled by opening and closing the first valve body assembly 8 and the second valve body assembly 10, so that when the channel pipe body is blocked, the corresponding branch pipe body can be disconnected by closing the first valve body assembly 8, and then the deposited stones in the channel pipe body can be broken by the breaker 9, and at the same time another channel can be opened for mud transportation, and when another channel is detected to be blocked, the blocked branch that has been cleaned is opened again, so that the stones can be automatically broken and the mud discharge pump is protected, so that the labor intensity of personnel can be reduced and the construction efficiency can be improved, and at the same time, when the inlet pipe 4 is blocked, the second valve body assembly 10 works with the breaker 9 thereon.

[0038] As shown in Figure 2 and Figure 3 , specifically, the inside of the buffer box 5 is provided with a material guiding inclined table 12, the inside of the material guiding inclined table 12 is provided with a pushing cylinder 13, one end of the pushing cylinder 13 is connected with a partition plate 14, the partition plate 14 is located above a discharging mechanism 7, the discharging mechanism 7 includes a second filter screen 71, a water collecting box 72 is arranged below the second filter screen 71, a collecting box 73 is arranged on one side of the water collecting box 72, and the water collecting box 72 is connected with a pumping mechanism 16 through a water guide pipe 17 below; the setting of the first filter screen 6 can realize the filtration of large-particle impurities in the mud to the partition plate 14, and fine-particle mud can be pumped out into the discharge area on one side of the first filter screen 6, when the large-particle impurities are accumulated on the partition plate 14, the pushing cylinder 13 drives the partition plate 14 to open, the second filter screen 71 can filter the large-particle impurities after crushing, the large-particle impurities will fall into the collecting box 73 for collection, and the excess mud water will fall into the water collecting box 72 for collection, so that the mud water and impurities are separated, and the impurities in the water collecting box 72 are collected later.

[0039] As shown in Figure 2 and Figure 3 , specifically, the crushing structure 3 includes a driving box 31, one end of the driving box 31 is connected with a driving rod 32, the driving rod 32 is provided with a crushing disc 33, and the crushing disc 33 is located above the material guiding inclined table 12; the driving box 31 is provided with multiple driving boxes 31, which can drive the driving rod 32 and the crushing disc 33 thereon to rotate, the crushing disc 33 can scatter and crush the large-particle impurities in the crushing area, so that the mud can pass through the first filter screen 6 into the discharge area and be pumped out, and at the same time, the working of the crushing structure 3 can not only crush the large-particle impurities, but also speed up the flow of the mud in the crushing area and the mud entering the discharge area.

[0040] As Figure 2 And Figure 4 Specifically, the first valve body assembly 8 includes a valve body 81, and the valve body 81 is provided with a first valve 82 and a second valve 83 at both ends, respectively. The first valve body assembly 8 is the same in structure as the second valve body assembly 10. The detection assembly 11 includes a pressure sensor and a flow sensor. The pressure value and the flow value of the first channel 201 and the second channel 202 or the pulp inlet pipe 4 are obtained through the pressure sensor and the flow sensor to determine whether a blockage occurs. The valves on the first valve body assembly 8 and the second valve body assembly 10 can be controlled to open or close through the control box 15. When the first channel 201 and the second channel 202 or the pulp inlet pipe 4 are detected to be blocked, the valves can be closed for easy maintenance. The crusher 9 can adopt a microwave crushing device, so that the entire process adopts microwave crushing of stone blocks, which is non-contact and has small overall vibration, and can be automatically and continuously processed.

[0041] As Figure 2 And Figure 5 The pumping mechanism 16 includes a pump box 1601, and the pump box 1601 is internally provided with a pump body 1602. One end of the pump body 1602 is connected with the water guide pipe 17, and the other end of the pump body 1602 is connected with a drain pipe 1603. A plurality of spray heads 1604 are arranged at equal intervals on the drain pipe 1603, and the spray heads 1604 are located above the crushing structure 3.

[0042] In the embodiment, the water collecting box 72 is arranged below the buffer box 5. The mud and water filtered by the second filter screen 71 can be collected through the water collecting box 72, so that the mud and water not pumped out are separated from the sundries, which is convenient for collecting the large-particle sundries in the later period. The water guide pipe 17 is arranged below the water collecting box 72 and is connected with the pump body 1602. The mud and water collected in the water collecting box 72 can be re-introduced into the buffer box 5 through the operation of the pump body 1602, so as to be recycled. The mud and water sprayed by the spray heads 1604 can flush the newly-entered mud slurry, reduce the concentration of the mud and water, facilitate the cutting of the crushing disc 33, and make the discharged sundries only have large-particle sundries, which is convenient for collection in the later period. The plurality of spray heads 1604 arranged at equal intervals on the drain pipe 1603 can improve the flushing effect on the newly-entered mud slurry.

[0043] At the same time, the mud slurry flushes the sundries in the buffer box 5, realizes the pushing of the large-particle slurry residue on the top inclined surface of the material guide inclined table 12 along the inclined surface, realizes the water flow pushing effect of the large-particle slurry residue, effectively improves the sliding effect of the large-particle slurry residue, thereby improves the discharge efficiency of the large-particle slurry residue, avoids the residual situation, effectively improves the flow of the discharge pump, thereby avoids the situation of blocking the work progress, and further effectively improves the work efficiency.

[0044] AsFigures 1-6 Another object of the present application is to provide a slurry pump conveying system for a shield tunneling machine, a control module 001 is arranged in the control box 15, and is used to close the corresponding passage when the passage is blocked; a first data acquisition module 002 is arranged on the control box 15, and is used to acquire the pressure value and the flow value detected by the detection assembly 11; a second data acquisition module 003 is arranged on the control box 15, and is used to acquire the pressure value and the flow value detected by the detection assembly 11; and a judgment module 004 is used to judge whether the passage is blocked, and judges that the passage is blocked when the pressure value and the flow value are both greater than the program setting value.

[0045] In the embodiment, during the construction process, the control module 001 opens the first valve body assembly 8 on the first passage 201 of the two anti-blocking structures 2, closes the first valve body assembly 8 of the second passage 202, and simultaneously opens all the second valve body assemblies 8 on the slurry inlet pipe 4. When the detection assembly on the first passage 201 detects a value greater than the program setting value, the control module 001 automatically closes the first valve body assembly 8 on the first passage 201, opens the first valve body assembly 8 of the second passage 202, and simultaneously starts the corresponding breaker 9 to work to break the deposited sundries. When the detection assembly 11 on the second passage 202 detects a value greater than the program setting value, the control module 001 automatically opens the first valve body assembly 8 on the first passage 201, closes the first valve body assembly 8 of the second passage 202, and simultaneously starts the corresponding breaker 9 to work to break the deposited sundries. The automatic switching of the first passage 201 and the second passage 202 and the dredging of the sundries are realized through the control module 001. When the detection assembly on the slurry inlet pipe 4 detects a value greater than the program setting value, the first valve body assembly 10 and the breaker 9 also work to further enhance the unblocking effect. The plurality of anti-blocking structures 2 are independent of each other.

[0046] Working principle: by passing the slurry into the buffer box 5, the large particle impurities can be crushed through the plurality of crushing structures 3, and then filtered through the first filter screen 6, so that the impurities entering the slurry pump 1 are small particle impurities, avoiding the direct blockage of the slurry pump 1 by large particle impurities, and by setting the anti-blocking structure 2 and the slurry inlet pipe 4 between the slurry pump 1 and the buffer box 5, the valve body and the crusher 9 on the anti-blocking structure 2 and the slurry inlet pipe 4 can avoid long-term deposition and blockage in the slurry pump 1 pipeline, and by using at least two slurry pumps 1 and anti-blocking structures 2 to extract the slurry in the discharge area, the slurry extraction efficiency can be improved, and when one slurry pump 1 fails, the slurry extraction work needs to be stopped, by using multiple slurry pumps 1, multiple channels and multiple slurry inlet pipes 4, the slurry extraction work can be continuously and uninterruptedly carried out, and the work efficiency can be improved, the first channel 201 and the second channel 202 are automatically switched and the impurities are dredged by the control module 001, and when the detection components on the slurry inlet pipe 4 detect values greater than the program setting value, the first valve body component 10 and the crusher 9 also work, further enhancing the anti-blocking effect, and the plurality of anti-blocking structures 2 are independent of each other.

[0047] It should be noted that the relative terms such as first and second, etc. are used herein only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0048] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the specification. The embodiments are selected and described in detail in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their full scope and equivalents.

Claims

1. A slurry pump conveying mechanism for a shield machine, characterized in that: include: Slurry pump (1); An anti-blocking structure (2), the anti-blocking structure (2) being installed on one side of the slurry discharge pump (1); A cache box (5), wherein a crushing structure (3) is provided inside the cache box (5), and the cache box (5) is used to receive mud discharged from the mud and water tank inside the shield machine; A pulp inlet pipe (4), the pulp inlet pipe (4) being installed on one side of the buffer box (5); a first filter screen (6), the first filter screen (6) being placed inside the cache box (5), and the first filter screen (6) being used to separate the internal area of ​​the cache box (5) into a crushing area and a discharge area; a discharge mechanism (7), the discharge mechanism (7) being installed below the cache box (5); The anti-blocking structure (2) is installed between the slurry discharge pump (1) and the slurry inlet pipe (4), and the anti-blocking structure (2) is used to keep the slurry discharge pump (1) unobstructed; The anti-blocking structure (2) comprises a first channel (201) and a second channel (202), a first valve body assembly (8) is provided in the middle of each of the first channel (201) and the second channel (202), a breaker (9) is provided on one side of the first valve body assembly (8), a second valve body assembly (10) is provided on the slurry inlet pipe (4), a detection assembly (11) is provided on each of the first valve body assembly (8) and the second valve body assembly (10), the detection assembly (11) is used to detect the slurry flow rate in the anti-blocking structure (2) and the slurry inlet pipe (4), a control box (15) is provided on one side of the slurry discharge pump (1), and a pumping mechanism (16) is provided on one side of the cache box (5); The discharge mechanism (7) comprises a second filter screen (71), a water collecting box (72) is provided below the second filter screen (71), a collecting box (73) is provided on one side of the water collecting box (72), and the bottom of the water collecting box (72) is connected to the pumping mechanism (16) via a water pipe (17).

2. The slurry pump conveying mechanism for a shield machine according to claim 1, characterized in that: A material guide ramp (12) is provided inside the cache box (5), and a push cylinder (13) is provided inside the material guide ramp (12). One end of the push cylinder (13) is connected to a partition (14), and the partition (14) is located above the discharge mechanism (7).

3. The slurry pump conveying mechanism for a shield machine according to claim 1, characterized in that: The pulverizing structure (3) comprises a drive box (31), one end of the drive box (31) is connected to a drive rod (32), a pulverizing disc (33) is provided on the drive rod (32), and the pulverizing disc (33) is located above the material guide ramp (12).

4. The slurry pump conveying mechanism for a shield machine according to claim 1, characterized in that: The first valve body assembly (8) comprises a valve body (81), and a first valve (82) and a second valve (83) are respectively provided at both ends of the valve body (81). The first valve body assembly (8) and the second valve body assembly (10) have the same structure.

5. The slurry pump conveying mechanism for a shield machine according to claim 1, characterized in that: The pumping mechanism (16) comprises a pump box (1601), wherein a pump body (1602) is arranged inside the pump box (1601), one end of the pump body (1602) is connected to the water pipe (17), and the other end of the pump body (1602) is connected to the drainage pipe (1603), and a plurality of nozzles (1604) are arranged at equal intervals on the drainage pipe (1603), and the nozzles (1604) are located above the crushing structure (3).

6. The slurry pump conveying mechanism for a shield machine according to claim 1, characterized in that: Two anti-blocking structures (2) are provided, and the number corresponds one-to-one with the slurry discharge pumps (1), and each anti-blocking structure (2) is provided with two first valve body assemblies (8).

7. The slurry pump conveying mechanism for a shield machine according to claim 1, characterized in that: The detection component (11) includes a pressure sensor and a flow sensor.

8. The shield machine slurry pump delivery system is characterized by: The slurry pump conveying mechanism for a shield machine according to claim 1 further comprises: A control module (001), the control module (001) being placed in the control box (15) and used to close the corresponding passage when the passage is blocked; a first data acquisition module (002), the first data acquisition module (002) being placed on the control box (15) and being used to acquire the pressure value and flow value detected by the detection component (11); a second data acquisition module (003), the second data acquisition module (003) being placed on the control box (15) and being used to acquire the pressure value and flow value detected by the detection component (11); The judging module (004) is used to judge whether the channel is blocked, and is judged to be in a blocked state when both the pressure value and the flow value are greater than the program set value.

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