Pilot-operated type low-pressure energy-saving embolism conveying device

Abstract

The invention belongs to the technical field of dry ash conveying, and particularly relates to a pilot-operated type low-pressure energy-saving plug conveying device which comprises an ash conveying pipeline and a special gas accompanying pipeline, a plurality of pilot-operated type automatic plug forming valves arranged at intervals are connected between the ash conveying pipeline and the special gas accompanying pipeline, a plurality of branch pipelines are arranged on the ash conveying pipeline and connected with a third pipe connector, and the third pipe connector is connected with a second pipe connector. Every two adjacent pilot-operated type automatic plug forming valves are connected through a first pipeline, one end of each first pipeline is connected to a first pipe connector of the previous pilot-operated type automatic plug forming valve, the other end of each first pipeline is connected to a fourth pipe connector of the next pilot-operated type automatic plug forming valve, a second pipeline is connected to a second pipe connector, and the other end of each second pipeline is connected to a third pipe connector of the next pilot-operated type automatic plug forming valve. And the other ends of all the second pipelines are connected with a special gas accompanying pipeline. According to the invention, gas is supplied to the pilot-operated type automatic plug forming valve through the special gas accompanying pipeline when the pipe is blocked and the gas is fed, so that point gas feeding can be realized, and no gas is fed to places without pipe blockage, so as to achieve the optimal conveying efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of dry ash conveying, and in particular to a pilot-type low-pressure energy-saving embolism conveying device. Background Art

[0002] In the dense phase pneumatic ash conveying system, pipe blockage, long distance and wear are mutually restricted and contradictory. In order to solve the pipe blockage, the gas consumption of the system can only be increased, which will increase the wear of the system. Otherwise, the system is prone to pipe blockage. Once the pipe blockage is not handled in time, a vicious cycle is likely to occur, resulting in a series of serious consequences, such as dust collector ash discharge, unit load reduction, dust collector tripping, etc. Therefore, corresponding improvements are made to this problem, and a pilot low-pressure energy-saving embolic conveying device is proposed. Summary of the invention

[0003] Based on the technical problems existing in the prior art, the present invention proposes a pilot-type low-pressure energy-saving embolic delivery device.

[0004] The present invention proposes a pilot-operated low-pressure energy-saving embolization conveying device, comprising an ash conveying pipeline and a special accompanying air pipeline, wherein the feed end of the ash conveying pipeline is connected to a bin pump, a plurality of pilot-operated automatic bolt-forming valves arranged at intervals are connected between the ash conveying pipeline and the special accompanying air pipeline, the pilot-operated automatic bolt-forming valve is provided with a first pipe interface, a second pipe interface, a third pipe interface and a fourth pipe interface, the ash conveying pipeline is provided with a plurality of branch pipes for connecting the pilot-operated automatic bolt-forming valves, the branch pipes are connected to the third pipe interface, two adjacent pilot-operated automatic bolt-forming valves are connected through a first pipe, one end of the first pipe is connected to the first pipe interface of the previous pilot-operated automatic bolt-forming valve, the other end of the first pipe is connected to the fourth pipe interface of the next pilot-operated automatic bolt-forming valve, the second pipe interface is connected to the second pipe, and all the first pipe interfaces are connected to the second pipe. The other ends of the two pipelines are connected to the special accompanying gas pipeline; a special accompanying gas pipeline is laid along the ash conveying pipeline to supply air to the pilot-operated automatic bolt-forming valve. The pilot-operated automatic bolt-forming valve is installed on the ash conveying pipeline. According to different conveying materials, such as dust collector ash, economizer ash, limestone powder, steel sand, coal powder and other working conditions, the installation distance is about 3-4 meters. After the ash conveying system is started, the pilot-operated low-pressure energy-saving embolic conveying system is triggered, and a pilot-operated automatic bolt-forming valve in the flow direction of the medium is always started automatically. The opening pressures of the pilot-operated automatic bolt-forming valves arranged on the ash conveying pipeline are different. They are adjusted according to the conveying site conditions. Air is supplied to the pilot-operated automatic bolt-forming valve where the pipe is blocked. Air can be supplied to the pilot-operated automatic bolt-forming valve through the special accompanying gas pipeline to achieve point air intake. No air is supplied to the place where the pipe is not blocked, so as to achieve the best conveying efficiency.

[0005] Preferably, a valve is installed on the branch pipe; in this way, when a certain pilot-operated automatic bolt-forming valve fails, the branch pipe connected to the pilot-operated automatic bolt-forming valve can be closed by the valve, and then the pilot-operated automatic bolt-forming valve can be removed for maintenance or replacement without affecting the operation of the entire ash conveying system.

[0006] Preferably, a plurality of sealing tubes are fixedly passed through the ash conveying pipeline at intervals, the sealing tubes are communicated with the branch pipelines, an air drive component is arranged in the sealing tubes, a plurality of unblocking components are arranged inside the ash conveying pipeline, when the pilot automatic plugging valve is opened, the gas in the branch pipeline enters the sealing tube to drive the air drive component to work, and then the air drive component will drive the unblocking component to work, thereby improving the unblocking efficiency; in this way, the air pressure of the pilot automatic plugging valve and the unblocking component can cooperate to improve the unblocking efficiency.

[0007] Preferably, the air drive assembly includes a main shaft that passes through the bottom of the sealing tube and is rotatably connected to the sealing tube, a fan blade is fixed to the top of the main shaft, and a mounting frame is rotatably connected to the bottom of the main shaft, and the mounting frame is fixed inside the ash conveying pipe; the airflow entering the sealing tube from the branch pipe will blow the fan blade, thereby causing the main shaft to rotate, and then the main shaft will drive the unblocking assembly to work.

[0008] Preferably, a fifth pipe interface is provided on the side of the branch pipe, the fifth pipe interface is connected to the third pipe, the other end of the third pipe is connected to the sealing pipe, and a one-way valve is fixed through the bottom of the sealing pipe; the gas enters the sealing pipe from the branch pipe, and then enters the ash conveying pipe from the one-way valve, so that an air path can be formed in the sealing pipe, thereby ensuring the continuous rotation of the fan blades.

[0009] Preferably, the unblocking component includes a pair of symmetrically distributed spiral feeding rods, the two spiral feeding rods are respectively rotatably connected on both sides of the mounting frame, the adjacent ends of the two spiral feeding rods are fixedly sleeved with a first bevel gear, the bottom end of the main shaft is fixedly sleeved with a second bevel gear, and the second bevel gear is meshed and connected with the two first bevel gears; when the main shaft rotates, the second bevel gear is synchronously driven to rotate, and then the second bevel gear will respectively mesh with the two first bevel gears to drive the two spiral feeding rods to rotate, so that the rotating spiral feeding rods can unblock the blocked parts.

[0010] Preferably, the unblocking component includes a pair of symmetrically distributed stirring rods, and sockets for the stirring rods to pass through are opened on both sides of the mounting frame, and the mounting frame is connected to the stirring rods through a transmission structure; when the main shaft rotates, the two stirring rods will be driven to reciprocate along the direction of the sockets through the transmission structure, thereby unblocking.

[0011] Preferably, the transmission structure includes a disc fixed at the bottom end of the main shaft, the two stirring rods are directly connected, a fixing column is fixed at the edge of the bottom end of the disc, a connecting rod is rotatably connected to the fixing column, and the other end of the connecting rod is rotatably connected to the stirring rod; when the main shaft rotates, the disc will be driven to rotate synchronously, and then the disc will pull the stirring rod through the connecting rod, so that the two stirring rods move back and forth along the direction of the socket at the same time.

[0012] Preferably, the transmission structure includes a cam fixed at the bottom end of the main shaft, the adjacent ends of the two stirring rods are L-shaped structures, an elastic connection is formed between the stirring rod and the mounting frame, and the end of the stirring rod abuts against the edge of the cam; when the main shaft rotates, the cam will be driven to rotate synchronously, and then the cam will periodically push the two stirring rods to both sides respectively, and then under the action of elastic force, the stirring rod will reset and move, so that the two stirring rods will move back and forth along the direction of the socket.

[0013] Preferably, a guide column is fixed to the end of the stirring rod, and circular holes for corresponding guide columns to pass through are opened on both sides of the mounting frame. A spring is sleeved on the guide column, and the two ends of the spring are respectively fixedly connected to the stirring rod and the mounting frame; in this way, the stirring rod can be driven to reset and move by the elastic force of the spring.

[0014] Compared with the prior art, the present invention provides a pilot-type low-pressure energy-saving embolic delivery device, which has the following beneficial effects:

[0015] 1. A pilot-type low-pressure energy-saving embolic conveying device, the conveying method is essentially different from the traditional dense phase conveying method. First, the air intake method is changed and the configuration is simple: all silo pump fluidization air systems only retain one main air intake, and the other silo pump fluidization, secondary air, anti-blocking air, and pipeline blowing are all cancelled, reducing the failure points of the silo pump system; second, energy saving, after the conveying air source pressure passes through the pressure regulating valve, only 0.35Mpa pressure is required to meet the gas requirements of the conveying system, which greatly reduces the gas consumption of the system, and the gas-saving effect can reach more than 50% (guaranteed value); third, small wear, this system can realize full pump and full pipe transportation, and the transportation efficiency is more than 3 times higher than that of the conventional conveying system, the gas consumption of pneumatic ash conveying is reduced, the conveying concentration is high, the flow rate is low, and the medium can reach the maximum gas-ash ratio when flowing in the ash pipe. It can achieve an ideal constant pressure and constant flow state. When the gas consumption is reduced for the same amount of ash, the wear will inevitably decrease, making the service life of the pipelines and valves of the conveying system longer. Fourthly, the conveying frequency is greatly reduced. After the transformation, only 2 to 3 cycles are required. The number of actions of the feed valve and the discharge valve is significantly reduced. The service life of the valve that could have been used for one year can be extended by more than 3 times. Fifthly, long-distance transportation can be achieved. Theoretically, the transportation distance is not limited and can reach more than several thousand meters, and it can operate stably. Sixthly, it is not limited by on-site conditions. On-site pipelines, elbows, rises and falls are not subject to any restrictions, and smooth transportation can be achieved. Seventhly, it has more advantages in conveying materials with a large specific gravity, such as boiler economizer ash, limestone powder, slag, etc. As long as the particles are smaller than 5mm and the ash content is more than 30%, they can be transported.

[0016] 2. A pilot-operated low-pressure energy-saving embolic transport device is provided with a clearing and plugging component. When the pilot-operated automatic plug-forming valve is opened, the gas in the branch pipeline enters the sealing tube to drive the gas-driven component to work, and then the gas-driven component will drive the clearing and plugging component to work, thereby improving the clearing and plugging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a pilot-type low-pressure energy-saving embolic delivery device proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a pilot-operated automatic embolization valve of a pilot-operated low-pressure energy-saving embolization delivery device proposed by the present invention;

[0019] Figure 3 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A;

[0020] Figure 4 This is a schematic cross-sectional view of a pilot-type low-pressure energy-saving embolic delivery device proposed by the present invention;

[0021] Figure 5 For the present invention Figure 4A schematic diagram of the enlarged structure at B;

[0022] Figure 6 This is a schematic diagram of the disc installation structure of a pilot-type low-pressure energy-saving embolic delivery device proposed by the present invention;

[0023] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at C;

[0024] Figure 8 A schematic diagram of the cam installation structure of a pilot-type low-pressure energy-saving embolic delivery device proposed by the present invention;

[0025] Fig. 9 For the present invention Figure 8 Enlarged structural diagram at D.

[0026] In the figure: 1. ash conveying pipeline; 2. special air pipeline; 3. silo pump; 4. pilot-operated automatic bolt valve; 5. first pipe interface; 6. second pipe interface; 7. third pipe interface; 8. fourth pipe interface; 9. first pipeline; 10. second pipeline; 11. branch pipeline; 12. valve; 13. sealing pipe; 14. fifth pipe interface; 15. third pipeline; 16. main shaft; 17. mounting frame; 18. fan blade; 19. one-way valve; 20. spiral feeding rod; 21. first bevel gear; 22. second bevel gear; 23. stirring rod; 24. socket; 25. disc; 26. fixing column; 27. connecting rod; 28. guide column; 29. ​​round hole; 30. spring; 31. cam. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Reference Figure 1-Figure 9A pilot-operated low-pressure energy-saving embolism conveying device comprises an ash conveying pipeline 1 and a dedicated accompanying gas pipeline 2, wherein a silo pump 3 is connected to the feed end of the ash conveying pipeline 1, and a plurality of pilot-operated automatic embolism valves 4 arranged at intervals are connected between the ash conveying pipeline 1 and the dedicated accompanying gas pipeline 2, wherein the pilot-operated automatic embolism valves 4 are provided with a first pipe interface 5, a second pipe interface 6, a third pipe interface 7 and a fourth pipe interface 8, wherein the ash conveying pipeline 1 is provided with a plurality of branch pipes 11 for connecting the pilot-operated automatic embolism valves 4, wherein the branch pipes 11 are connected to the third pipe interface 7, and two adjacent pilot-operated automatic embolism valves 4 are connected via a first pipe 9, wherein one end of the first pipe 9 is connected to the first pipe interface 5 of the preceding pilot-operated automatic embolism valve 4, and the other end of the first pipe 9 is connected to the fourth pipe interface 8 of the succeeding pilot-operated automatic embolism valve 4, and the second pipe interface 6 is connected to a second pipe 10, and the other ends of all the second pipes 10 are connected to the dedicated accompanying gas pipeline 2;

[0030] During operation, a dedicated accompanying air pipeline 2 is laid along the ash conveying pipeline 1 to supply air to the pilot-operated automatic plug valve 4. The pilot-operated automatic plug valve 4 is installed on the ash conveying pipeline 1. Depending on the conveyed materials, such as dust collector ash, economizer ash, limestone powder, steel sand, coal powder and other working conditions, the installation distance is about 3-4 meters. There are generally two control methods for loading time, one is time and the other is material level signal. The best loading method for the pilot-operated low-pressure energy-saving plug conveying system is to reach the material level signal, so that the silo pump 3 can load as much material as possible. The more the conveying volume at one time, the better. Only one is retained. A main air intake, because the silo pump 3 is full of material, the silo pump 3 can be quickly pressurized to start the embolism system. After the ash conveying system is started, the pilot low-pressure energy-saving embolism conveying system is triggered, and a pilot automatic embolism valve 4 that always starts the medium flow direction is automatically started. The opening pressure of the pilot automatic embolism valve 4 arranged on the ash conveying pipeline 1 is different. It is adjusted according to the situation on the conveying site. Air is supplied to the pilot automatic embolism valve 4 where the pipe is blocked. Air can be supplied to the pilot automatic embolism valve 4 through the dedicated accompanying air pipeline 2, which can realize point air intake, and no air intake in places where the pipe is not blocked, so as to achieve the best conveying efficiency;

[0031] The pilot-operated automatic plugging valve 4 is the main equipment of the low-pressure energy-saving plugging conveying system. It is an intelligent full-mechanical product without electronic control components, accurate in action and long in service life (8 to 10 years), without wearing parts. It is installed on the ash conveying pipeline at certain intervals and can intelligently sense the pressure in the ash conveying pipeline. When the set value is reached, it can be opened and closed intelligently without program control. Each automatic plugging valve can work autonomously.

[0032] The model of the pilot-operated automatic bolt-forming valve 4 is the automatic bolt-forming valve pulse type MZCX-16-20 or the automatic bolt-forming valve ZCX-IV-16-20.

[0033] Furthermore, a valve 12 is installed on the branch pipe 11;

[0034] In this way, when a certain pilot-operated automatic bolt-forming valve 4 fails, the branch pipe 11 connected to the pilot-operated automatic bolt-forming valve 4 can be closed through the valve 12, and then the pilot-operated automatic bolt-forming valve 4 can be removed for maintenance or replacement without affecting the operation of the entire ash conveying system.

[0035] Furthermore, a plurality of spaced sealing tubes 13 are fixedly passed through the ash conveying pipeline 1, the sealing tube 13 is communicated with the branch pipeline 11, an air drive component is arranged in the sealing tube 13, and a plurality of clearing and blocking components are arranged inside the ash conveying pipeline 1. When the pilot-operated automatic plug valve 4 is opened, the gas in the branch pipeline 11 enters the sealing tube 13 to drive the air drive component to work, and then the air drive component drives the clearing and blocking component to work, thereby improving the clearing and blocking efficiency;

[0036] During operation, the air pressure of the pilot-operated automatic plug-forming valve 4 and the unblocking component can cooperate to improve the unblocking efficiency.

[0037] The air drive assembly includes a main shaft 16 that passes through the bottom of the sealing tube 13 and is rotatably connected to the sealing tube 13. A fan blade 18 is fixed to the top of the main shaft 16. The bottom of the main shaft 16 is rotatably connected to a mounting frame 17. The mounting frame 17 is fixed inside the ash conveying pipeline 1.

[0038] During operation, the airflow entering the sealing tube 13 from the branch pipe 11 will blow the fan blades 18, thereby causing the main shaft 16 to rotate, and then the main shaft 16 will drive the unblocking component to work.

[0039] A fifth pipe interface 14 is provided on the side of the branch pipe 11, and the fifth pipe interface 14 is connected to a third pipe 15, and the other end of the third pipe 15 is connected to the sealing pipe 13, and a one-way valve 19 is fixedly passed through the bottom of the sealing pipe 13;

[0040] During operation, the gas enters the sealing pipe 13 from the branch pipe 11 and then enters the ash conveying pipe 1 from the one-way valve 19, so that a gas path can be formed in the sealing pipe 13, thereby ensuring the continuous rotation of the fan blades 18.

[0041] In Example 1, the unblocking assembly includes a pair of symmetrically distributed spiral feeding rods 20, the two spiral feeding rods 20 are rotatably connected to the two sides of the mounting frame 17, the adjacent ends of the two spiral feeding rods 20 are fixedly sleeved with a first bevel gear 21, the bottom end of the main shaft 16 is fixedly sleeved with a second bevel gear 22, and the second bevel gear 22 is meshed and connected with the two first bevel gears 21;

[0042] During operation, the main shaft 16 rotates to synchronously drive the second bevel gear 22 to rotate, and then the second bevel gear 22 will respectively mesh with the two first bevel gears 21 to drive the two spiral feeding rods 20 to rotate, so that the rotating spiral feeding rods 20 can clear the blocked parts.

[0043] In Example 2, the unblocking assembly includes a pair of symmetrically distributed stirring rods 23, and both sides of the mounting frame 17 are provided with sockets 24 for the stirring rods 23 to pass through, and the mounting frame 17 is connected to the stirring rods 23 through a transmission structure;

[0044] During operation, when the main shaft 16 rotates, the two stirring rods 23 are driven to move back and forth along the direction of the socket 24 through the transmission structure, thereby clearing the blockage.

[0045] The transmission structure includes a disc 25 fixed at the bottom end of the main shaft 16, and the two stirring rods 23 are directly connected. A fixing column 26 is fixed at the edge of the bottom end of the disc 25, and a connecting rod 27 is rotatably connected to the fixing column 26. The other end of the connecting rod 27 is rotatably connected to the stirring rod 23.

[0046] During operation, when the main shaft 16 rotates, the disc 25 will be driven to rotate synchronously, and then the disc 25 will pull the stirring rod 23 through the connecting rod 27, so that the two stirring rods 23 move back and forth along the direction of the socket 24 at the same time.

[0047] In embodiment 3, the transmission structure includes a cam 31 fixed to the bottom end of the main shaft 16, and the adjacent ends of the two stirring rods 23 are L-shaped structures. The stirring rods 23 are elastically connected to the mounting frame 17, and the ends of the stirring rods 23 abut against the edges of the cam 31;

[0048] During operation, the main shaft 16 rotates and the cam 31 rotates synchronously, and then the cam 31 periodically pushes the two stirring rods 23 to both sides respectively, and then under the action of elastic force, the stirring rods 23 reset and move, so that the two stirring rods 23 move back and forth along the direction of the socket 24.

[0049] A guide post 28 is fixed to the end of the stirring rod 23, and circular holes 29 are provided on both sides of the mounting frame 17 for the corresponding guide posts 28 to pass through. A spring 30 is sleeved on the guide post 28, and the two ends of the spring 30 are fixedly connected to the stirring rod 23 and the mounting frame 17 respectively;

[0050] During operation, the agitating rod 23 can be driven to reset by the elastic force of the spring 30 .

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pilot-type low-pressure energy-saving embolic conveying device, comprising an ash conveying pipeline (1) and a dedicated accompanying air pipeline (2), characterized in that: The feed end of the ash conveying pipeline (1) is connected to a silo pump (3); a plurality of pilot-operated automatic slug-forming valves (4) arranged at intervals are connected between the ash conveying pipeline (1) and the dedicated accompanying gas pipeline (2); the pilot-operated automatic slug-forming valves (4) are provided with a first pipe interface (5), a second pipe interface (6), a third pipe interface (7) and a fourth pipe interface (8); the ash conveying pipeline (1) is provided with a plurality of branch pipes (11) for connecting the pilot-operated automatic slug-forming valves (4); the branch pipes (11) and the third pipe interface (8) are connected to each other. (7) connected, two adjacent pilot-operated automatic bolt-forming valves (4) are connected via a first pipe (9), one end of the first pipe (9) is connected to the first pipe interface (5) of the preceding pilot-operated automatic bolt-forming valve (4), the other end of the first pipe (9) is connected to the fourth pipe interface (8) of the following pilot-operated automatic bolt-forming valve (4), the second pipe interface (6) is connected to a second pipe (10), and the other ends of all the second pipes (10) are connected to the dedicated accompanying gas pipe (2).

2. A pilot-type low-pressure energy-saving embolic delivery device according to claim 1, characterized in that: A valve (12) is installed on the branch pipe (11).

3. A pilot-type low-pressure energy-saving embolic delivery device according to claim 1, characterized in that: The ash conveying pipeline (1) is fixedly provided with a plurality of sealed pipes (13) distributed at intervals, the sealed pipes (13) are in communication with the branch pipeline (11), an air drive component is arranged in the sealed pipe (13), and a plurality of unblocking components are arranged inside the ash conveying pipeline (1). When the pilot-operated automatic plug valve (4) is opened, the gas in the branch pipeline (11) enters the sealed pipe (13) to drive the air drive component to work, and then the air drive component drives the unblocking component to work, thereby improving the unblocking efficiency.

4. A pilot-type low-pressure energy-saving embolic delivery device according to claim 3, characterized in that: The air drive assembly comprises a main shaft (16) penetrating the bottom of the sealing tube (13) and rotatably connected to the sealing tube (13); a fan blade (18) is fixed to the top end of the main shaft (16); a mounting frame (17) is rotatably connected to the bottom end of the main shaft (16); and the mounting frame (17) is fixed inside the ash conveying pipeline (1).

5. A pilot-type low-pressure energy-saving embolic delivery device according to claim 4, characterized in that: A fifth pipe interface (14) is provided on the side of the branch pipe (11), the fifth pipe interface (14) is connected to a third pipe (15), the other end of the third pipe (15) is connected to a sealing pipe (13), and a one-way valve (19) is fixedly passed through the bottom of the sealing pipe (13).

6. A pilot-type low-pressure energy-saving embolic delivery device according to claim 4, characterized in that: The blocking-clearing assembly comprises a pair of symmetrically distributed spiral feeding rods (20), the two spiral feeding rods (20) being rotatably connected to two sides of a mounting frame (17), the adjacent ends of the two spiral feeding rods (20) being fixedly sleeved with a first bevel gear (21), the bottom end of the main shaft (16) being fixedly sleeved with a second bevel gear (22), and the second bevel gear (22) being meshingly connected with the two first bevel gears (21).

7. A pilot-type low-pressure energy-saving embolic delivery device according to claim 4, characterized in that: The unblocking assembly comprises a pair of symmetrically distributed stirring rods (23), and sockets (24) for the stirring rods (23) to pass through are provided on both sides of the mounting frame (17), and the mounting frame (17) is connected to the stirring rods (23) via a transmission structure.

8. A pilot-type low-pressure energy-saving embolic delivery device according to claim 7, characterized in that: The transmission structure comprises a disc (25) fixed at the bottom end of the main shaft (16), the two stirring rods (23) are directly connected, a fixing column (26) is fixed at the edge of the bottom end of the disc (25), a connecting rod (27) is rotatably connected to the fixing column (26), and the other end of the connecting rod (27) is rotatably connected to the stirring rod (23).

9. A pilot-type low-pressure energy-saving embolic delivery device according to claim 7, characterized in that: The transmission structure comprises a cam (31) fixed at the bottom end of the main shaft (16); the adjacent ends of the two stirring rods (23) are both L-shaped structures; an elastic connection is formed between the stirring rods (23) and the mounting frame (17); and the ends of the stirring rods (23) abut against the edges of the cams (31).

10. A pilot-type low-pressure energy-saving embolic delivery device according to claim 9, characterized in that: A guide post (28) is fixed to the end of the stirring rod (23); round holes (29) for the corresponding guide posts (28) to pass through are provided on both sides of the mounting frame (17); a spring (30) is sleeved on the guide post (28); and both ends of the spring (30) are fixedly connected to the stirring rod (23) and the mounting frame (17), respectively.

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