Zero-leakage high-pressure particle conveying system

Abstract

The utility model provides a zero-leakage high-pressure particle conveying system which comprises a spiral conveyor, a conveying device and a conveying device, the spiral conveyor comprises a driving device and a transmission shaft connected with the driving device, spiral blades are arranged on the transmission shaft, and the transmission shaft is used for rotating under the driving action of the driving device to convey materials; the pressure-bearing shell is arranged outside the transmission shaft, the pressure-bearing shell is of a tubular structure matched with the transmission shaft, one end of the tubular structure is closed, and an assembly opening is formed in the other end of the tubular structure; a feeding hole and a discharging hole which are far away from each other are formed in the pressure-bearing shell; and the pressure container is arranged outside the driving device in a covering mode and connected with the assembling opening of the pressure-bearing shell in a sealed mode, so that the pressure container and the pressure-bearing shell jointly define a closed space used for containing the spiral conveyor in an enclosing mode. The continuous conveying device can be used for continuous conveying of particles in the high-pressure environment, zero leakage can be achieved, and the safety of conveying fuel particles and harmful particles in the high-pressure environment is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of high-pressure material transportation, and in particular, relates to a zero-leakage high-pressure particle transportation system. Background Art

[0002] In order to achieve energy recovery and harmless treatment, combustible particles and harmful particles often require high-pressure continuous transportation. Due to the large size and unevenness of the particles, it is difficult to use mature high-pressure pneumatic conveying technology. Screw conveying is a mature conveying method under normal pressure or low pressure conditions, but it has problems such as short life and easy leakage under high pressure conditions. Once combustible particles and harmful particles leak during high-pressure transportation, it may cause combustion, explosion, poisoning and other serious consequences. Due to the large pressure difference between the material and the external environment, once a slight leakage occurs, it will accelerate damage. How to fundamentally avoid leakage is the key to achieving inherent safety.

[0003] In order to solve the problem of spiral conveying leakage, the existing technology has done a lot of work. The Chinese patent with publication number CN208560654U discloses a separate sealing device for spiral conveyors. Although the sealing is improved to a certain extent, it cannot be used in a high-pressure environment. The Chinese patent with publication number CN210365647U discloses a high-pressure spiral conveyor shaft end transmission and sealing structure, and its design pressure is only 0.5Mpa. The Chinese patent with publication number CN217919892U discloses a high-temperature resistant sealed spiral conveyor, which improves the high-temperature sealing effect, but cannot be used in a high-pressure environment. The Chinese patent with publication number CN117625254A discloses a high-pressure quantitative feeder for a biomass gasification furnace, which can work at 0.4Mpa, but still does not solve the problem of material leakage caused by damage to the rotating part. The Chinese patent with publication number CN115057174A discloses a multi-stage sealed spiral conveyor suitable for materials in a high-requirement sealing environment, which achieves high sealing and low leakage through multiple seals, but still cannot completely eliminate the leakage problem.

[0004] Therefore, achieving safe transportation of granular materials without leakage risk under higher pressure environment is an urgent problem to be solved. Utility Model Content

[0005] In view of the above-mentioned technical problems existing in the prior art, an embodiment of the present application provides a zero-leakage high-pressure particle conveying system.

[0006] The technical solution adopted in the embodiment of the present application is: a zero-leakage high-pressure particle delivery system, comprising:

[0007] The screw conveyor comprises a driving device and a transmission shaft connected to the driving device, wherein the transmission shaft is provided with a spiral blade, and the transmission shaft is used to rotate under the driving action of the driving device to convey materials;

[0008] A pressure-bearing shell is arranged outside the transmission shaft. The pressure-bearing shell is a tubular structure adapted to the transmission shaft. One end of the tubular structure is sealed and the other end forms an assembly opening. The pressure-bearing shell is provided with an inlet and an outlet that are separated from each other.

[0009] The pressure container is covered outside the driving device and is sealed to the assembly port of the pressure shell, so that the pressure container and the pressure shell together form a closed space for accommodating the screw conveyor.

[0010] In an optional embodiment, a first bearing is provided at one end of the transmission shaft close to the driving device, and a second bearing is provided at one end of the transmission shaft away from the driving device;

[0011] A first sealing structure and a second sealing structure are provided between the transmission shaft and the inner wall of the pressure-bearing shell, the first sealing structure and the second sealing structure are located between the first bearing and the second bearing, and the first sealing structure is close to the first bearing, and the second sealing structure is close to the second bearing; a material conveying area is formed between the first sealing structure and the second sealing structure, and a first bearing area and a second bearing area are formed on the outer side of the first sealing structure and the outer side of the second sealing structure respectively, and the first sealing structure and the second sealing structure respectively isolate the first bearing and the second bearing from the first bearing area and the second bearing area outside the material conveying area.

[0012] In an optional embodiment, the first sealing structure is a first air-sealing labyrinth, and the second sealing structure is a second air-sealing labyrinth;

[0013] The shell of the pressure vessel is provided with a first gas inlet, through which a purge gas can be fed into the pressure vessel, the purge gas flows toward the first bearing, and continuously passes through the first gas seal labyrinth to prevent dust from the material conveying area from entering the first bearing area;

[0014] A second gas inlet is provided on the pressure-bearing shell between the second air seal labyrinth and the second bearing, through which purge gas can be delivered to the second bearing area. The purge gas continuously passes through the second air seal labyrinth to prevent dust in the material conveying area from entering the second bearing area.

[0015] In an optional embodiment, a ventilation hole is provided on the first bearing and / or a bearing seat for mounting the first bearing.

[0016] In an optional embodiment, the feed inlet is connected to an inlet flexible connection; and / or

[0017] The discharge port is connected to an outlet flexible connection.

[0018] In an optional embodiment, the inlet flexible connection and the outlet flexible connection are respectively metal bellows.

[0019] In an optional embodiment, the zero-leakage high-pressure particle delivery system further includes an outlet shut-off valve and a flow meter;

[0020] The upper end of the outlet flexible connection is connected to the flange on the discharge port through an upper flange, the lower end of the outlet flexible connection is connected to the flange at the upper end of the outlet cut-off valve through a lower flange, and the flange at the lower end of the outlet cut-off valve is connected to the flange of the flow meter.

[0021] In an optional embodiment, the driving device includes a variable frequency motor and a reducer, and the output shaft of the reducer is connected to the transmission shaft through a coupling; the variable frequency motor is arranged on a motor fixing frame, and the motor fixing frame is fixedly connected to the pressure-bearing shell.

[0022] In an optional embodiment, the discharge port is arranged close to the second bearing, and the spiral blades on the transmission shaft between the discharge port and the first bearing are forward spiral blades, and the spiral blades on the transmission shaft between the discharge port and the second bearing are reverse spiral blades.

[0023] In an optional embodiment, a shaft rotation monitoring port is provided at one end of the pressure-bearing shell away from the driving device, and the shaft rotation monitoring port is used to install a speed monitoring sensor. The speed monitoring sensor is used to detect the speed of the transmission shaft. When the detected speed of the transmission shaft is lower than the set speed, it is determined that the transmission shaft is abnormal.

[0024] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0025] The pressure vessel and the pressure-bearing shell of the present application together constitute a pressure-bearing shell, which can be used for continuous transportation of particles in a high-pressure environment (0-15Mpa or even higher pressure), and can achieve zero leakage, thereby improving the safety of transporting fuel particles and harmful particles in a high-pressure environment.

[0026] The present application realizes that all rotating parts operate in a high-pressure environment without axial pressure difference between the parts, thereby reducing accelerated wear caused by pressure difference, increasing equipment life, and improving safety.

[0027] The outlet material of the present application is provided with a flow meter and a variable frequency motor and a reducer, which can control the particle delivery amount according to the measurement results, and is conducive to achieving quantitative delivery.

[0028] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application.

[0029] The overview of various implementations or examples of the technology described in this application is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the description and claims, serve to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0031] Figure 1 This is a schematic diagram of a zero-leakage high-pressure particle delivery system according to an embodiment of the present application.

[0032] Reference numerals:

[0033] 1- frequency conversion motor; 2- speed reducer; 3- transmission shaft; 4- coupling; 5- forward spiral blade; 6- reverse spiral blade; 7- pressure-bearing shell; 8- feed inlet; 9- discharge port; 10- pressure vessel; 11- first gas inlet; 12- second gas inlet; 13- first bearing; 14- second bearing; 15- first gas seal maze; 16- second gas seal maze; 17- vent; 18- inlet flexible connection; 19- outlet flexible connection; 20- outlet cut-off valve; 21- flow meter; 22- shaft rotation monitoring port; 23- container sealing blind plate; 24- shell sealing blind plate; 25- penetration installation port; 26- cable penetration; 27- motor fixing bracket; 28- material conveying area. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiment of the present application clearer, the technical solution of the embodiment of the present application will be clearly and completely described in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. "First", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] In order to keep the following description of the embodiments of the present application clear and concise, the present application omits detailed descriptions of known functions and known components.

[0037] The embodiment of the present application provides a zero-leakage high-pressure particle conveying system for continuously conveying granular materials under high-pressure conditions.

[0038] like Figure 1 As shown, the zero-leakage high-pressure particle conveying system of the embodiment of the present application includes a screw conveyor, a pressure-bearing shell 7 and a pressure vessel 10.

[0039] The screw conveyor comprises a driving device and a transmission shaft 3. The transmission shaft 3 is provided with spiral blades. The transmission shaft 3 is connected to the output shaft of the driving device. The transmission shaft 3 is used to rotate under the driving action of the driving device to convey materials.

[0040] The pressure-bearing shell 7 is arranged outside the transmission shaft 3. The pressure-bearing shell 7 is a tubular structure adapted to the transmission shaft 3. One end of the tubular structure is sealed and the other end forms an assembly opening. The pressure-bearing shell 7 is provided with an inlet 8 and an outlet 9 which are separated from each other.

[0041] The pressure container 10 is disposed outside the driving device, and the opening of the pressure container 10 is sealedly connected to the assembly opening of the pressure shell 7, so that the pressure container 10 and the pressure shell 7 together form a closed space for accommodating the screw conveyor.

[0042] The zero-leakage high-pressure particle conveying system of the embodiment of the present application utilizes the pressure-bearing shell 7 and the pressure vessel 10 to form a closed space that can withstand high pressure. The pressure-bearing shell 7 and the pressure vessel 10 are static equipment and belong to an integral sealing structure to achieve continuous conveying of particles in a high-pressure environment (0-15Mpa or even higher pressure); and during the operation of the screw conveyor, the pressure-bearing shell 7 and the pressure vessel 10 generally will not be worn or leaked. Even if the rotating parts are damaged, no leakage will occur from the pressure-bearing shell 7 and the pressure vessel 10, thereby achieving zero leakage and improving the safety of conveying fuel particles and harmful particles under high-pressure environments; since all rotating parts work under the same high-pressure environment, there is no axial pressure difference between the parts, which reduces the accelerated wear caused by the pressure difference, increases the service life of the equipment, and also improves safety.

[0043] In some embodiments, Figure 1 As shown, a first bearing 13 is arranged at one end of the transmission shaft 3 close to the driving device, and a second bearing 14 is arranged at one end of the transmission shaft 3 away from the driving device. The transmission shaft 3 is rotatably arranged in the pressure-bearing shell 7 through the first bearing 13 and the second bearing 14. For example, a bearing seat (not shown in the figure) for mounting the first bearing 13 and the second bearing 14 respectively can be fixed on the pressure-bearing shell 7. A first sealing structure and a second sealing structure are arranged between the transmission shaft 3 and the inner wall of the pressure-bearing shell 7, and the first sealing structure and the second sealing structure are located between the first bearing 13 and the second bearing 14, and the first sealing structure is close to the first bearing 13, and the second sealing structure is close to the second bearing 14. A material conveying area 28 is formed between the first sealing structure and the second sealing structure, and the first bearing 13 area is formed outside the first sealing structure, and the second bearing 14 area is formed outside the second sealing structure. The first sealing structure and the second sealing structure isolate the first bearing 13 and the second bearing 14 in the first bearing 13 area and the second bearing 14 area outside the material conveying area 28, respectively, that is, the first bearing 13 is located in the first bearing 13 area, and the second bearing 14 is located in the second bearing 14 area. By providing the first sealing structure and the second sealing structure, the two bearings are isolated outside the material conveying area 28 of the pressure-bearing housing 7, so that the particles and dust in the material conveying area 28 are prevented from entering the bearing area, so that the bearings work in a relatively clean space, thereby extending the service life of the bearings.

[0044] Further, continue to combine Figure 1, the first sealing structure can be a first gas seal labyrinth 15, and the second sealing structure can be a second gas seal labyrinth 16. A first gas inlet 11 is provided on the shell of the pressure vessel 10, and a purge gas is fed into the pressure vessel 10 through the first gas inlet 11. The purge gas can flow in the direction of the first bearing 13, and continuously pass through the first gas seal labyrinth 15 to prevent the dust in the material conveying area 28 from entering the first bearing 13 area. A second gas inlet 12 is provided on the pressure-bearing shell 7 between the second gas seal labyrinth 16 and the second bearing 14, and a purge gas can be fed into the second bearing 14 area through the second gas inlet 12. The purge gas continuously passes through the second gas seal labyrinth 16 to prevent the dust in the material conveying area 28 from entering the second bearing 14 area. The sealing structure is designed in the form of a gas seal labyrinth and combined with the purge gas, so that the sealing effect is good and it is easy to implement, and it can effectively avoid the influence of particle dust on the bearing. For example, the purge gas can be selected from an inert gas that will not react with the conveyed particles and will not affect the conveyed particles.

[0045] Continue to combine Figure 1 The first bearing 13 and / or the bearing seat for mounting the first bearing 13 may be provided with a vent hole 17 to facilitate the passage of the purge gas. Since the first bearing 13 rotates in the working state, the vent hole 17 is preferably provided on the bearing seat.

[0046] The pressure shell 7 is arranged horizontally, the feed port 8 is arranged on the upper side of the pressure shell 7, and the discharge port 9 is arranged on the lower side of the pressure shell 7, so as to facilitate feeding and discharging under the action of gravity. Figure 1 As shown, the inlet 8 is connected to the inlet soft connection 18. The outlet 9 is connected to the outlet soft connection 19. By arranging the soft connection at the inlet and outlet 9, the slight vibration caused by the screw conveying operation can be eliminated to ensure the stability of the connection and avoid wear, thereby avoiding leakage during the inlet and outlet.

[0047] The inlet flexible connection 18 and the outlet flexible connection 19 are preferably made of metal bellows that can withstand high pressure.

[0048] In some embodiments, Figure 1As shown, the zero-leakage high-pressure particle conveying system also includes an outlet shut-off valve 20 and a flowmeter 21. The upper end of the outlet soft connection 19 is docked with the flange on the discharge port 9 through the upper flange, and the lower end of the outlet soft connection 19 is docked with the flange at the upper end of the outlet shut-off valve 20 through the lower flange, and the flange at the lower end of the outlet shut-off valve 20 is connected to the flange of the flowmeter 21. The outlet shut-off valve 20 is used for rapid material cut-off. It is normally open when the screw conveyor is in working state, and can be remotely controlled to be cut off as needed. After the outlet shut-off valve 20 is cut off, the subsequent high-pressure medium can be prevented from returning to the pressure-bearing shell 7. The specific structural form of the outlet shut-off valve 20 is not limited, and a ball valve is preferably used. The flowmeter 21 monitors the flow rate of the falling particles in real time, thereby realizing real-time metering control of the granular material, so as to facilitate the understanding of the discharge situation. The flowmeter 21 can measure the falling flow rate of particles in real time through electromagnetic or optical technology.

[0049] like Figure 1 As shown, the driving device includes a variable frequency motor 1 and a reducer 2, and the variable frequency motor 1 and the reducer 2 can adopt an integrated structure to provide rotational power for material transportation. The output shaft of the reducer 2 is connected to the transmission shaft 3 through a coupling 4. The variable frequency motor 1 is arranged on a motor fixing frame 27, and the motor fixing frame 27 is fixedly connected to the pressure-bearing housing 7. The motor speed can be adjusted by frequency conversion to control the material feeding flow, and the speed can be controlled within a reasonable range by the reducer 2.

[0050] Continue to combine Figure 1 , the discharge port 9 is arranged close to the second bearing 14, and the spiral blade on the transmission shaft 3 between the discharge port 9 and the first bearing 13 is a forward spiral blade 5, and the spiral blade on the transmission shaft 3 between the discharge port 9 and the second bearing 14 is a reverse spiral blade 6. The forward spiral blade 5 is used to make the material move in a spiral direction from the feed port 8 to the discharge port 9, meeting the material conveying requirements, and the reverse spiral blade 6 is used to prevent the material from being conveyed in the direction of the second gas seal labyrinth 16, reducing the possibility of the material approaching the second gas seal labyrinth 16, which is conducive to extending the service life of the rotating parts.

[0051] A shaft rotation monitoring port 22 is provided at one end of the pressure housing 7 away from the driving device. The shaft rotation monitoring port 22 is used to install a speed monitoring sensor. The speed monitoring sensor is used to detect the speed of the transmission shaft 3. When the detected speed of the transmission shaft 3 is lower than the set speed, it is determined that the transmission shaft 3 is abnormal. The speed monitoring sensor can assist in determining whether the rotation of the transmission shaft 3 is normal, especially determining abnormal conditions such as the breakage of the transmission shaft 3.

[0052] like Figure 1As shown, the pressure vessel 10 is in the shape of a cylinder with openings at both ends, the opening at one end is sealed and connected to the assembly port of the pressure shell 7 through a flange, and the opening at the other end is sealed through a container sealing blind plate 23. The end of the pressure shell 7 away from the assembly port is sealed with a shell sealing blind plate 24. Through the two sealing blind plates, the pressure vessel 10 and the pressure shell 7 form a closed space that can withstand high pressure, which can meet the safety requirements of 0-15Mpa or even higher pressure environments. The frequency conversion motor 1, the reducer 2, the coupling 4, the first bearing 13, the first air seal labyrinth 15, the transmission shaft 3, the forward spiral blade 5, the reverse spiral blade 6, the second air seal labyrinth 16, the second bearing 14 and other components including the rotating parts all work under the same pressure, eliminating the axial force caused by the pressure difference, and improving the service life of the rotating parts. Even if the rotating parts are damaged, it will not cause material leakage. In addition, by removing the sealing blind plate, it is convenient to inspect and repair the equipment.

[0053] A penetration installation opening 25 is provided on the wall of the pressure vessel 10. The penetration installation opening 25 is used to install a cable penetration 26. The cable penetration 26 can safely transmit electricity in a normal pressure environment to the variable frequency motor 1 in a high pressure environment.

[0054] The working process of the zero-leakage high-pressure particle delivery system of the embodiment of the present application is as follows:

[0055] The particles from the upstream high pressure environment (0-15Mp or higher) fall into the inlet 8 of the screw conveyor through the inlet soft connection 18 under the action of gravity. The screw conveyor rotates under the drive of the variable frequency motor 1 to continuously convey the particle materials in the direction away from the inlet 8. After reaching the outlet 9, they fall into the outlet soft connection 19 under the action of gravity, and successively pass through the cut-off valve and the flow meter 21 to enter the downstream process. The falling flow rate is adjusted by adjusting the speed of the variable frequency motor 1;

[0056] Inert gas is fed into the system through the first gas inlet 11 and the second gas inlet 12, and enters the material conveying area 28 through the gas seal maze structure. Inert gas is continuously fed during operation to prevent particulate dust from entering the bearing area, so that the two bearings can operate in a clean environment without pressure difference.

[0057] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

Claims

1. A zero-leakage high-pressure particle delivery system, characterized in that: include: The screw conveyor comprises a driving device and a transmission shaft connected to the driving device, wherein the transmission shaft is provided with a spiral blade, and the transmission shaft is used to rotate under the driving action of the driving device to convey materials; A pressure-bearing shell is arranged outside the transmission shaft. The pressure-bearing shell is a tubular structure adapted to the transmission shaft. One end of the tubular structure is sealed and the other end forms an assembly opening. The pressure-bearing shell is provided with an inlet and an outlet that are separated from each other. The pressure container is covered outside the driving device and is sealed to the assembly port of the pressure shell, so that the pressure container and the pressure shell together form a closed space for accommodating the screw conveyor.

2. The zero-leakage high-pressure particle delivery system according to claim 1, characterized in that: A first bearing is arranged at one end of the transmission shaft close to the driving device, and a second bearing is arranged at one end of the transmission shaft away from the driving device; A first sealing structure and a second sealing structure are provided between the transmission shaft and the inner wall of the pressure-bearing shell, the first sealing structure and the second sealing structure are located between the first bearing and the second bearing, and the first sealing structure is close to the first bearing, and the second sealing structure is close to the second bearing; a material conveying area is formed between the first sealing structure and the second sealing structure, and a first bearing area and a second bearing area are formed on the outer side of the first sealing structure and the outer side of the second sealing structure respectively, and the first sealing structure and the second sealing structure respectively isolate the first bearing and the second bearing from the first bearing area and the second bearing area outside the material conveying area.

3. The zero-leakage high-pressure particle delivery system according to claim 2, characterized in that: The first sealing structure is a first air-sealing labyrinth, and the second sealing structure is a second air-sealing labyrinth; The shell of the pressure vessel is provided with a first gas inlet, through which a purge gas can be fed into the pressure vessel, the purge gas flows toward the first bearing, and continuously passes through the first gas seal labyrinth to prevent dust from the material conveying area from entering the first bearing area; A second gas inlet is provided on the pressure-bearing shell between the second air seal labyrinth and the second bearing, through which purge gas can be delivered to the second bearing area. The purge gas continuously passes through the second air seal labyrinth to prevent dust in the material conveying area from entering the second bearing area.

4. The zero-leakage high-pressure particle delivery system according to claim 3, characterized in that: The first bearing and / or a bearing seat for mounting the first bearing is provided with a vent hole.

5. The zero-leakage high-pressure particle delivery system according to claim 1, characterized in that: The feed inlet is connected to an inlet flexible connection; and / or The discharge port is connected to an outlet flexible connection.

6. The zero-leakage high-pressure particle delivery system according to claim 5, characterized in that: The inlet flexible connection and the outlet flexible connection are respectively metal bellows.

7. The zero-leakage high-pressure particle delivery system according to claim 5, characterized in that: The zero-leakage high-pressure particle delivery system also includes an outlet cut-off valve and a flow meter; The upper end of the outlet flexible connection is connected to the flange on the discharge port through an upper flange, the lower end of the outlet flexible connection is connected to the flange at the upper end of the outlet cut-off valve through a lower flange, and the flange at the lower end of the outlet cut-off valve is connected to the flange of the flow meter.

8. The zero-leakage high-pressure particle delivery system according to claim 1, characterized in that: The driving device comprises a variable frequency motor and a reducer, wherein the output shaft of the reducer is connected to the transmission shaft via a coupling; the variable frequency motor is arranged on a motor fixing frame, and the motor fixing frame is fixedly connected to the pressure-bearing shell.

9. The zero-leakage high-pressure particle delivery system according to claim 2, characterized in that: The discharge port is arranged close to the second bearing, and the spiral blades on the transmission shaft between the discharge port and the first bearing are forward spiral blades, and the spiral blades on the transmission shaft between the discharge port and the second bearing are reverse spiral blades.

10. The zero-leakage high-pressure particle delivery system according to claim 1, characterized in that: An end of the pressure-bearing shell away from the driving device is provided with a shaft rotation monitoring port, and the shaft rotation monitoring port is used to install a speed monitoring sensor. The speed monitoring sensor is used to detect the speed of the transmission shaft. When the detected speed of the transmission shaft is lower than the set speed, it is determined that the transmission shaft is abnormal.

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