Long-distance concrete spraying blocked pipe dredging device and method

Abstract

The invention discloses a long-distance concrete spraying blocked pipe dredging device and method, and relates to the technical field of concrete conveying equipment, and the long-distance concrete spraying blocked pipe dredging device comprises a concrete conveying pipe which is formed by sequentially communicating a plurality of conveying pipelines end to end; and the dredging assembly is a rotational flow supercharger and / or a high-pressure air cannon, the dredging assembly communicates between the two adjacent conveying pipelines, and when the feeding ends and / or the discharging ends of the conveying pipelines are / is blocked, the dredging assembly can utilize high-pressure air to dredge the feeding ends and / or the discharging ends of the conveying pipelines. According to the condition that the feeding end and the discharging end of the conveying pipeline are blocked independently or simultaneously, the dredging assembly can dredge the pipeline through high-pressure air, the problem that the conveying pipeline is blocked in long-distance concrete spraying operation can be rapidly solved, blocked concrete in the conveying pipeline can be removed in time, and it is guaranteed that concrete spraying can be continuously conducted.

Description

Technical Field

[0001] The invention relates to the technical field of concrete conveying equipment, and in particular to a long-distance concrete jetting pipe blocking and dredging device and method. Background Art

[0002] Shotcrete can quickly seal the surface of the tunnel surrounding rock, preventing the surrounding rock from being exposed to the air, thereby reducing the weathering, erosion and shedding of the surrounding rock. This plays an important role in improving the stability of the surrounding rock and preventing tunnel collapse.

[0003] Concrete spraying equipment uses a delivery pipe to transport concrete. The longer the delivery distance, the easier it is to get blocked. Therefore, the existing common concrete spraying equipment in coal mines is suitable for spraying operations within 100 meters. For spraying distances above 100 meters, there are problems of varying degrees of blockage of concrete in the delivery pipe. Once the delivery pipe is blocked, it is very difficult to clear and repair it. The main reason is that the specific location of the blockage in the pipe cannot be determined in time. It is necessary to stop work, dismantle and inspect the delivery pipe section by section, confirm the location of the blockage, clean the blocked delivery pipe and reinstall it, or replace a new delivery pipe before continuing the concrete spraying operation, which leads to stagnation of the spraying operation and waste of concrete.

[0004] In view of this, how to provide a method that can quickly solve the blockage of the delivery pipe in long-distance concrete spraying operations is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] The purpose of the present invention is to provide a long-distance concrete jetting pipe blocking and dredging device to solve the problems existing in the prior art.

[0006] To achieve the above object, the present invention provides a long-distance concrete jetting pipe blocking and dredging device, comprising:

[0007] The concrete conveying pipe is composed of a plurality of conveying pipes connected end to end in sequence;

[0008] The dredging component is a swirl supercharger and / or a high-pressure air cannon. The dredging component is connected between two adjacent conveying pipes. When the feed end and / or the discharge end of the conveying pipe is blocked, the dredging component can use high-pressure air to dredge the feed end and / or the discharge end of the conveying pipe.

[0009] Furthermore, the dredging component is a cyclone supercharger, and the cyclone supercharger includes:

[0010] A feed swirl block is arranged at the tail end of a conveying pipeline;

[0011] A discharge swirl block is arranged at the head end of another adjacent conveying pipeline, a first flow channel is defined between the feed swirl block and the discharge swirl block, and the first flow channel is respectively connected to the two adjacent conveying pipelines;

[0012] A first high-pressure air inlet component is connected to the discharge swirl block, and has a first high-pressure stop valve and a first high-pressure air inlet, wherein the first high-pressure air inlet is connected to the first flow channel, and the first high-pressure stop valve is used to open and close the first high-pressure air inlet;

[0013] The first pressure sensor is arranged on the discharging swirl block, and the sensing end of the first pressure sensor extends into the first flow channel.

[0014] Furthermore, it also includes:

[0015] A blocked material discharge pipe, one end of which is connected to the first flow channel, and the other end of which passes through the discharge swirl block and extends to the outside;

[0016] The second high-pressure stop valve is arranged at the other end of the blockage discharge pipeline.

[0017] Furthermore, the dredging assembly high-pressure air cannon comprises:

[0018] A body, arranged between two adjacent delivery pipelines, wherein an air inlet cavity, an air storage cavity and a second flow channel are defined in the body, wherein the second flow channel is respectively communicated with the two adjacent delivery pipelines, and the air storage cavity is communicated with the second flow channel through an air channel;

[0019] A piston is slidably disposed in the body, and one end of the piston is communicated with the air inlet chamber, and the other end of the piston is communicated with the air storage chamber. The piston can slide between a first position and a second position. When the piston is in the first position, the piston blocks the air passage, and when the piston is in the second position, the air passage is communicated with the air storage chamber;

[0020] A second high-pressure air inlet assembly, which has a third high-pressure shut-off valve and a second high-pressure air inlet, the second high-pressure air inlet is connected to the air inlet cavity, and the third high-pressure shut-off valve is used to open and close the second high-pressure air inlet; a plurality of air holes are arranged in the piston, and a one-way valve is arranged in the air holes, when the second high-pressure air inlet is opened, high-pressure gas can enter the air storage cavity from the air holes and push the piston to move to the first position;

[0021] A high-pressure gas outlet assembly, comprising an exhaust port and a fourth high-pressure stop valve, wherein the exhaust port is communicated with the air inlet cavity, and the fourth high-pressure stop valve is used to open and close the exhaust port;

[0022] An air-supply high-pressure solenoid valve is arranged on the machine body and communicated with the air storage chamber;

[0023] A second pressure sensor is disposed on the body, and a sensing end thereof extends into the second flow channel;

[0024] When the second high-pressure air inlet is closed and the exhaust port is opened, a pressure difference is formed between the air storage chamber and the air inlet chamber, the gas in the air storage chamber pushes the piston to move to the second position, the gas in the air storage chamber flows into the second flow channel, and the air supply high-pressure solenoid valve is opened to supply air to the air storage chamber.

[0025] The present invention also discloses a long-distance concrete jetting pipe blocking and unblocking method, which uses the long-distance concrete jetting pipe blocking and unblocking device, comprising the following steps:

[0026] When the feed end and / or the discharge end of the conveying pipeline is blocked, the unblocking component is started to unblock the feed end and / or the discharge end of the conveying pipeline by using air pressure.

[0027] Furthermore, the dredging component is a cyclone supercharger. When the feed end or the discharge end of the conveying pipeline is blocked, the following steps are followed to dredge it:

[0028] S1: When the first pressure sensor senses that the pressure in the conveying pipeline decreases and approaches zero, it is determined that the feed end or the discharge end of the conveying pipeline is blocked;

[0029] S2: Open the high-pressure air inlet, and the high-pressure air enters the first flow channel; the feed swirl block is set on the first conveying pipe, and the discharge swirl block is set on the second conveying pipe. The head end of the first conveying pipe is the feed end, and the tail end of the second conveying pipe is the discharge end. The high-pressure air enters the first flow channel and flows toward the discharge end to push the blocked concrete at the discharge end to move outward; a negative pressure is formed at the tail end of the first conveying pipe, and the blocked concrete at the feed end moves toward the discharge end.

[0030] Furthermore, when the feed end and the discharge end of the conveying pipeline are blocked, the following steps are also included:

[0031] S3: Open the blockage discharge pipe, high-pressure air enters the first flow channel and is discharged from the blockage discharge pipe, negative pressure is formed at the tail end of the first conveying pipe and the head end of the second conveying pipe, and concrete at the feed end and the discharge end is discharged from the blockage discharge pipe.

[0032] Furthermore, the dredging component is a high-pressure air cannon. When the feed end or the discharge end of the conveying pipeline is blocked, the following steps are followed to dredge it:

[0033] S1': when the second pressure sensor senses that the pressure in the conveying pipeline decreases and approaches zero, it is determined that the feed end or the discharge end of the conveying pipeline is blocked;

[0034] S2': Open the high-pressure air inlet, and the high-pressure gas enters the air inlet chamber, and enters the air storage chamber from the air hole of the piston, and at the same time pushes the piston to move to the first position to block the airway. When the air pressure of the air inlet chamber and the air storage chamber reaches an equilibrium or the air storage chamber reaches a preset pressure, close the high-pressure air inlet;

[0035] S3': the exhaust port is opened, the pressure of the air inlet chamber decreases, the air pressure of the air storage chamber is higher than the air pressure of the air inlet chamber and the piston is pushed to move to the second position, the air storage chamber is connected with the air channel, the high-pressure gas in the air storage chamber flows into the second flow channel through the air channel, and the delivery pipeline vibrates;

[0036] S4': Open the air supply high pressure solenoid valve to supply air to the air storage chamber from the outside. The high pressure air forms a thrust in the second flow channel, so that the concrete at the feeding end and the discharging end is loosened and moves along the feeding direction.

[0037] Furthermore, when the feed end and the discharge end of the conveying pipeline are blocked, the following steps are also included: the conveying pipeline with blocked feed end and discharge end is removed, and steps S2'-S4' are repeated.

[0038] The present invention discloses the following technical effects:

[0039] A dredging component is arranged between adjacent conveying pipes. The dredging component adopts a swirl supercharger or a high-pressure air cannon. In case that the feed end and the discharge end of the conveying pipe are blocked individually or simultaneously, the dredging component can use high-pressure air to dredge the pipes separately. This can quickly solve the problem of blockage in the conveying pipe of long-distance concrete spraying operations, promptly remove the concrete blocked in the conveying pipe, and ensure that concrete spraying can operate continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of Example 2 of the present invention (normal state when the delivery pipeline is not blocked);

[0043] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention (working state when the delivery pipeline is blocked);

[0044] Figure 4 Layout diagram for dredging components;

[0045] Among them, 1. conveying pipeline; 101. first conveying pipeline; 102. second conveying pipeline; 103. feed end; 104. discharge end; 2. feed swirl block; 3. discharge swirl block; 4. first flow channel; 5. first high-pressure air intake assembly; 501. first high-pressure stop valve; 502. first high-pressure air inlet; 6. first pressure sensor; 7. blockage discharge pipeline; 8. second high-pressure stop valve; 9. body; 901. air intake chamber; 902. air storage chamber; 903. second flow channel; 904. air channel; 10. piston; 11. second high-pressure air intake assembly; 1101. third high-pressure stop valve; 1102. second high-pressure air inlet; 12. high-pressure air outlet assembly; 1201. exhaust port; 1202. fourth high-pressure stop valve; 13. air replenishment high-pressure solenoid valve; 14. second pressure sensor. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] Example 1

[0049] The embodiment of the present invention provides a long-distance concrete jetting pipe blocking and unblocking device, comprising:

[0050] The concrete conveying pipe is composed of a plurality of conveying pipes 1 connected end to end in sequence;

[0051] The dredging component is a swirl supercharger and / or a high-pressure air cannon. The dredging component is connected between two adjacent conveying pipes 1. When the feed end 103 and / or the discharge end 104 of the conveying pipe 1 is blocked, the dredging component can use high-pressure air to dredge the feed end 103 and / or the discharge end 104 of the conveying pipe 1.

[0052] In this embodiment, the dredging component is a cyclone supercharger, which includes:

[0053] A feed swirl block 2 is arranged at the tail end of a conveying pipeline 1;

[0054] The discharge swirl block 3 is arranged at the head end of another adjacent conveying pipeline 1, and a first flow channel 4 is defined between the feed swirl block 2 and the discharge swirl block 3, and the first flow channel 4 is respectively connected to the two adjacent conveying pipelines 1;

[0055] The first high-pressure air inlet component 5 is connected to the discharge swirl block 3, and has a first high-pressure stop valve 501 and a first high-pressure air inlet 502. The first high-pressure air inlet 502 is connected to the first flow channel 4, and the first high-pressure stop valve 501 is used to open and close the first high-pressure air inlet 502;

[0056] The first pressure sensor 6 is arranged on the discharging swirl block 3 , and its sensing end extends into the first flow channel 4 .

[0057] Furthermore, it also includes:

[0058] A blocked material discharge pipe 7, one end of which is connected to the first flow channel 4, and the other end of which penetrates the discharge swirl block 3 and extends to the outside;

[0059] The second high-pressure stop valve 8 is arranged at the other end of the blockage discharge pipeline 7 .

[0060] The embodiment of the present invention further discloses a method for clearing a long-distance concrete jetting blocked pipe, which uses the above-mentioned long-distance concrete jetting blocked pipe clearing device, and includes the following steps:

[0061] When the feed end 103 and / or the discharge end 104 of the conveying pipeline 1 is blocked, the unblocking component is started to unblock the feed end 103 and / or the discharge end 104 of the conveying pipeline 1 by using air pressure.

[0062] Furthermore, the unblocking component is a cyclone supercharger. When the feed end 103 or the discharge end 104 of the conveying pipeline 1 is blocked, the unblocking is performed according to the following steps:

[0063] S1: When the first pressure sensor 6 senses that the pressure in the conveying pipeline 1 decreases and approaches zero, it is determined that the feed end 103 or the discharge end 104 of the conveying pipeline 1 is blocked;

[0064] S2: open the high-pressure air inlet, and the high-pressure air enters the first flow channel 4; the feed swirl block 2 is arranged on the first conveying pipe 101, and the discharge swirl block 3 is arranged on the second conveying pipe 102, the head end of the first conveying pipe 101 is the feed end 103, and the tail end of the second conveying pipe 102 is the discharge end 104, the high-pressure air enters the first flow channel 4 and flows toward the discharge end 104 to push the blocked concrete at the discharge end 104 to move outward; a negative pressure is formed at the tail end of the first conveying pipe 101, and the blocked concrete at the feed end 103 moves toward the discharge end 104.

[0065] In this embodiment, when the feed end 103 and the discharge end 104 of the conveying pipeline 1 are blocked, the following steps are also included:

[0066] S3: Open the blockage discharge pipe 7, high-pressure air enters the first flow channel 4 and is discharged from the blockage discharge pipe 7, negative pressure is formed at the tail end of the first conveying pipe 101 and the head end of the second conveying pipe 102, and concrete at the feed end 103 and the discharge end 104 is discharged from the blockage discharge pipe 7.

[0067] Example 2

[0068] The difference between this embodiment and embodiment 1 is that the dredging component high-pressure air cannon includes:

[0069] The body 9 is disposed between two adjacent delivery pipes 1, and defines an air inlet chamber 901, an air storage chamber 902, and a second flow channel 903 in the body 9. The second flow channel 903 is respectively connected to the two adjacent delivery pipes 1, and the air storage chamber 902 is connected to the second flow channel 903 through an air channel 904;

[0070] The piston 10 is slidably disposed in the body 9, and one end of the piston 10 is connected to the air inlet chamber 901, and the other end is connected to the air storage chamber 902. The piston 10 can slide between a first position and a second position. When the piston 10 is located at the first position, the piston 10 blocks the air passage 904. When the piston 10 is located at the second position, the air passage 904 is connected to the air storage chamber 902.

[0071] The second high-pressure air inlet assembly 11 has a third high-pressure stop valve 1101 and a second high-pressure air inlet 1102. The second high-pressure air inlet 1102 is connected to the air inlet chamber 901. The third high-pressure stop valve 1101 is used to open and close the second high-pressure air inlet 1102. The piston 10 is provided with a plurality of air holes, each of which is provided with a one-way valve. When the second high-pressure air inlet 1102 is opened, high-pressure gas can enter the air storage chamber 902 from the air holes and push the piston 10 to move to the first position.

[0072] The high-pressure gas outlet assembly 12 has an exhaust port 1201 and a fourth high-pressure stop valve 1202. The exhaust port 1201 is connected to the air inlet cavity 901. The fourth high-pressure stop valve 1202 is used to open and close the exhaust port 1201.

[0073] The air supply high pressure solenoid valve 13 is arranged on the body 9 and communicated with the air storage chamber 902;

[0074] The second pressure sensor 14 is disposed on the body 9, and its sensing end extends into the second flow channel 903;

[0075] When the second high-pressure air inlet 1102 is closed and the exhaust port 1201 is opened, a pressure difference is formed between the air storage chamber 902 and the air inlet chamber 901, and the gas in the air storage chamber 902 pushes the piston 10 to move to the second position, and the gas in the air storage chamber 902 flows into the second flow channel 903, and the air replenishment high-pressure solenoid valve 13 is opened to replenish air to the air storage chamber 902. It should be noted that the end of the piston 10 corresponding to the air storage chamber 902 is a conical surface, so when the air pressure in the air storage chamber 902 is high, a thrust is generated to push the piston 10 toward the air inlet chamber 901. The one-way valve in the air hole allows the gas to flow from the air inlet chamber 901 to the air storage chamber 902. When the gas flows from the air inlet chamber 901 to the air storage chamber 902, it pushes the piston 10 to move toward the air storage chamber 902.

[0076] In this embodiment, when the feed end 103 or the discharge end 104 of the conveying pipeline 1 is blocked, the following steps are performed to clear the blockage:

[0077] S1': when the second pressure sensor 14 senses that the pressure in the conveying pipeline 1 decreases and approaches zero, it is determined that the feed end 103 or the discharge end 104 of the conveying pipeline 1 is blocked;

[0078] S2': Open the high-pressure air inlet, and the high-pressure gas enters the air inlet chamber 901, and enters the air storage chamber 902 from the air hole of the piston 10, and at the same time pushes the piston 10 to move to the first position to block the airway 904. When the air inlet chamber 901 and the air storage chamber 902 reach an air pressure balance or the air storage chamber 902 reaches a preset air pressure, the high-pressure air inlet is closed; this step can be performed when the delivery pipeline 1 is not blocked, that is, a pre-pressure is formed in the air storage chamber 902. When the delivery pipeline 1 is blocked, the pre-pressure in the air storage chamber 902 can be used immediately.

[0079] S3': the exhaust port 1201 is opened, the pressure of the air inlet chamber 901 decreases, the air pressure of the air storage chamber 902 is higher than the air pressure of the air inlet chamber 901 and the piston 10 is pushed to move to the second position, the air storage chamber 902 is connected with the air channel 904, and the high-pressure gas in the air storage chamber 902 flows into the second flow channel 903 through the air channel 904, and the delivery pipeline 1 vibrates;

[0080] S4': Open the air supply high pressure electromagnetic valve 13 to supply air to the air storage chamber 902 from the outside. The high pressure air forms a thrust in the second flow channel 903, so that the concrete at the feed end 103 and the discharge end 104 are loosened and move along the feeding direction.

[0081] In this embodiment, when the feed end 103 and the discharge end 104 of the conveying pipeline 1 are blocked, the following steps are also included: the conveying pipeline 1 with blocked feed end 103 and discharge end 104 is removed, and steps S2'-S4' are repeated.

[0082] Example 3

[0083] The difference between the present invention and the first embodiment is that the blockage and unblocking states of the conveying pipeline 1 are determined and corresponding countermeasures are formulated.

[0084] Blockages are divided into minor blockages, general blockages and severe blockages. Specifically:

[0085] Method for judging slight blockage: Set the working pressure of the pressure sensor to be within the range of P1 (large)--P2 (small). When the pressure sensed by the first pressure sensor 6 or the second pressure sensor 14 is less than P2, a small amount of concrete is still sprayed out or sprayed out intermittently. Use the following solution 1 to solve the problem.

[0086] The general method of judging whether the material blocking is serious is as follows: when the pressure sensed by the first pressure sensor 6 or the second pressure sensor 14 is much smaller than P2 or close to 0, a small amount of concrete is sprayed out or no concrete is sprayed out. The following technical solution 2 is adopted to solve the problem.

[0087] Plan 1: Start the unblocking component A closest to the injection head, and close it after two minutes (determined and modified according to the length of the distance). During this process, concrete is sprayed out, indicating that this section of the conveying pipeline 1 has been unblocked. No material is sprayed out but wind is sprayed out, indicating that this section is not blocked. Start another unblocking component B, and close it after three minutes (tentative). During this process, concrete is sprayed out, indicating that this section of the conveying pipeline 1 has been unblocked. No material is sprayed out but wind is sprayed out, indicating that this section is not blocked. Start unblocking components C, D, E, F, etc. in sequence. The number of unblocking components is set according to the length of the distance, and the first three unblocking components are illustrated in the figure, until all conveying pipelines 1 are unblocked.

[0088] Solution 2: Start the unblocking component A closest to the injection head, and close it after two minutes (determined and modified according to the length of the distance). During this process, concrete is sprayed out, indicating that this section of the conveying pipe has been unblocked. No material and no wind are sprayed out, indicating that this section is blocked. Open the unblocking component again and increase the air pressure. Generally, the blocked material can be sprayed out. If the blocked material cannot be sprayed out after reaching the set maximum air pressure, it means that the blockage is very serious and cannot be unblocked by wind pressure. Continue to close and open the unblocking component. If the concrete is still not unblocked after repeated several times, remove the conveying pipe 1, perform manual unblocking and cleaning, and then reinstall or replace the new conveying pipe 1. Start the sprayer normally. If the concrete spraying continues to work normally, if the above situation continues to occur, open the swirl supercharger and close it after three minutes (tentative). During this process, concrete is sprayed out, indicating that this section of the conveying pipe has been unblocked. No material and no wind spraying indicates that this section is blocked. Open the dredging component B again and increase the compressed air pressure. Generally, the blocked material can be sprayed out. If the blocked material still cannot be sprayed out after reaching the set maximum pressure, it means that the blockage is very serious and cannot be unblocked by wind pressure. Continue to close and open the dredging component B. Repeatedly, the concrete is still not unblocked several times, remove the conveying pipe 1, perform manual dredging and cleaning, and then reinstall or replace a new conveying pipe 1. Similarly, open the dredging components C, D, E, F, ... in sequence until all conveying pipes 1 are unblocked and normal concrete spraying is restored.

[0089] The process of clearing the blockage in the conveying pipeline 1 can be controlled in stages, and can also be completed by manual operation or by an explosion-proof safety automatic control system.

[0090] Of course, under the maximum air pressure set in the design, the possibility of the blocked pipe not being able to be unblocked is very small, and it will only happen in extreme cases, such as: the quality of concrete does not meet the requirements (factors such as oversized and numerous sand and gravel particles, oversized and numerous agglomerated particles, serious excess of humidity, etc.), etc.

[0091] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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, and therefore should not be understood as a limitation on the present invention.

[0092] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A long-distance concrete jetting pipe blocking and unblocking device, characterized in that: include: The concrete conveying pipe is composed of a plurality of conveying pipes (1) connected end to end in sequence; A dredging component, wherein the dredging component is a swirl supercharger and / or a high-pressure air cannon, and the dredging component is connected between two adjacent conveying pipes (1). When the feed end (103) and / or the discharge end (104) of the conveying pipe (1) is blocked, the dredging component can use high-pressure air to dredge the feed end (103) and / or the discharge end (104) of the conveying pipe (1).

2. A long distance concrete jetting pipe blocking and unblocking device according to claim 1, characterized in that: The dredging component is a cyclone supercharger, and the cyclone supercharger comprises: A feed swirl block (2) is arranged at the tail end of a conveying pipeline (1); A discharge swirl block (3) is arranged at the head end of another adjacent conveying pipeline (1), and a first flow channel (4) is defined between the feed swirl block (2) and the discharge swirl block (3), and the first flow channel (4) is respectively connected to the two adjacent conveying pipelines (1); A first high-pressure air inlet component (5), which is in communication with the discharge swirl block (3), and comprises a first high-pressure stop valve (501) and a first high-pressure air inlet (502), wherein the first high-pressure air inlet (502) is in communication with the first flow channel (4), and the first high-pressure stop valve (501) is used to open and close the first high-pressure air inlet (502); A first pressure sensor (6) is arranged on the discharge swirl block (3), and a sensing end thereof extends into the first flow channel (4).

3. A long distance concrete jetting pipe blocking and unblocking device according to claim 2, characterized in that: Also includes: A blocked material discharge pipe (7), one end of which is in communication with the first flow channel (4), and the other end of which passes through the discharge swirl block (3) and extends to the outside; A second high-pressure stop valve (8) is arranged at the other end of the blockage discharge pipe (7).

4. The long-distance concrete jetting pipe blocking and unblocking device according to claim 1 is characterized in that: The dredging assembly high-pressure air cannon, the high-pressure air cannon comprising: A body (9) is arranged between two adjacent delivery pipes (1), and an air inlet chamber (901), an air storage chamber (902) and a second flow channel (903) are defined in the body (9), wherein the second flow channel (903) is respectively connected to the two adjacent delivery pipes (1), and the air storage chamber (902) is connected to the second flow channel (903) via an air channel (904); A piston (10) is slidably disposed in the body (9), and one end of the piston (10) is connected to the air inlet chamber (901), and the other end is connected to the air storage chamber (902). The piston (10) can slide between a first position and a second position. When the piston (10) is located at the first position, the piston (10) blocks the air passage (904). When the piston (10) is located at the second position, the air passage (904) is connected to the air storage chamber (902). A second high-pressure air intake assembly (11), comprising a third high-pressure stop valve (1101) and a second high-pressure air intake port (1102), wherein the second high-pressure air intake port (1102) is in communication with the air intake chamber (901), and the third high-pressure stop valve (1101) is used to open and close the second high-pressure air intake port (1102); a plurality of air holes are provided in the piston (10), and a one-way valve is provided in the air holes, and when the second high-pressure air intake port (1102) is opened, high-pressure gas can enter the air storage chamber (902) from the air holes and push the piston (10) to move to the first position; A high-pressure gas outlet component (12), comprising an exhaust port (1201) and a fourth high-pressure stop valve (1202), wherein the exhaust port (1201) is in communication with the air inlet cavity (901), and the fourth high-pressure stop valve (1202) is used to open and close the exhaust port (1201); An air-supply high-pressure electromagnetic valve (13) is arranged on the machine body (9) and is in communication with the air storage chamber (902); A second pressure sensor (14) is disposed on the machine body (9), and a sensing end thereof extends into the second flow channel (903); When the second high-pressure air inlet (1102) is closed and the air outlet (1201) is opened, a pressure difference is formed between the air storage chamber (902) and the air inlet chamber (901), and the gas in the air storage chamber (902) pushes the piston (10) to move to the second position. The gas in the air storage chamber (902) flows into the second flow channel (903), and the air supply high-pressure solenoid valve (13) is opened to supply air to the air storage chamber (902).

5. A long-distance concrete jetting pipe blocking and unblocking method, characterized in that: The long-distance concrete jetting pipe blocking and unblocking device according to claim 3 or 4 comprises the following steps: When the feed end (103) and / or the discharge end (104) of the conveying pipeline (1) is blocked, the unblocking component is started to unblock the feed end (103) and / or the discharge end (104) of the conveying pipeline (1) using air pressure.

6. A long distance concrete jetting pipe blocking and unblocking method according to claim 5, characterized in that: The unblocking component is a cyclone supercharger. When the feed end (103) or the discharge end (104) of the conveying pipeline (1) is blocked, the unblocking is performed according to the following steps: S1: When the first pressure sensor (6) senses that the pressure in the conveying pipeline (1) decreases and approaches zero, it is determined that the feed end (103) or the discharge end (104) of the conveying pipeline (1) is blocked; S2: the high-pressure air inlet is opened, and the high-pressure air enters the first flow channel (4); the feed swirl block (2) is arranged on the first conveying pipeline (101), and the discharge swirl block (3) is arranged on the second conveying pipeline (102); the head end of the first conveying pipeline (101) is the feed end (103), and the tail end of the second conveying pipeline (102) is the discharge end (104); the high-pressure air enters the first flow channel (4) and flows in the direction of the discharge end (104), pushing the blocked concrete at the discharge end (104) to move outward; a negative pressure is formed at the tail end of the first conveying pipeline (101), and the blocked concrete at the feed end (103) moves in the direction of the discharge end (104).

7. A long distance concrete jetting pipe blocking and unblocking method according to claim 6, characterized in that: When the feed end (103) and the discharge end (104) of the conveying pipeline (1) are blocked, The following steps are involved: S3: The blockage discharge pipe (7) is opened, and high-pressure air enters the first flow channel (4) and is discharged from the blockage discharge pipe (7). A negative pressure is formed at the tail end of the first conveying pipe (101) and the head end of the second conveying pipe (102), and concrete at the feed end (103) and the discharge end (104) is discharged from the blockage discharge pipe (7).

8. A long distance concrete jetting pipe blocking and unblocking method according to claim 5, characterized in that: The unblocking component is a high-pressure air cannon. When the feed end (103) or the discharge end (104) of the conveying pipeline (1) is blocked, the unblocking is performed according to the following steps: S1': when the second pressure sensor (14) senses that the pressure in the conveying pipeline (1) decreases and approaches zero, it is determined that the feed end (103) or the discharge end (104) of the conveying pipeline (1) is blocked; S2': opening the high-pressure air inlet, allowing high-pressure gas to enter the air inlet chamber (901), and enter the air storage chamber (902) from the air hole of the piston (10), while pushing the piston (10) to move to the first position to block the air passage (904); when the air inlet chamber (901) and the air storage chamber (902) reach air pressure equilibrium or the air storage chamber (902) reaches a preset air pressure, closing the high-pressure air inlet; S3': the exhaust port (1201) is opened, the pressure of the air inlet chamber (901) decreases, the air pressure of the air storage chamber (902) is higher than the air pressure of the air inlet chamber (901), and the piston (10) is pushed to move to the second position, the air storage chamber (902) is connected to the air channel (904), and the high-pressure gas in the air storage chamber (902) flows into the second flow channel (903) through the air channel (904), and the delivery pipeline (1) vibrates; S4': Open the air supply high pressure electromagnetic valve (13) to supply air to the air storage chamber (902) from the outside. The high pressure air forms a thrust in the second flow channel (903), so that the concrete at the feed end (103) and the discharge end (104) loosens and moves along the feeding direction.

9. A long distance concrete jetting pipe blocking and unblocking method according to claim 8, characterized in that: When the feed end (103) and the discharge end (104) of the conveying pipeline (1) are blocked, the method further comprises the following steps: The blocked delivery pipeline (1) at the feed end (103) and the discharge end (104) is removed, and steps S2'-S4' are repeated.

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