Flow-control boosting vacuumizing medium conveying device capable of clearing blockage

Abstract

The utility model discloses a flow control boosting vacuumizing medium conveying device capable of clearing blockage, and relates to the field of closed or harmful space medium treatment devices. Comprising a suction head, a flow control booster, an unblocking device, a medium conveying pipe, a vacuum pump, a high-pressure air pump and a controller. The unblocking device comprises a high-pressure gas storage tank, a connecting pipe and a gas spraying pipe; a deflation valve is arranged between the high-pressure gas storage tank and the gas spraying pipe The high-pressure air pump is connected with an air inlet of the airflow generator and the high-pressure air storage tank through pipelines, and each pipeline is provided with an electromagnetic valve. The flow control valve, the deflation valve, the electromagnetic valve, the vacuum pump and the high-pressure air pump are all controlled by the controller. The medium is mixed with air when passing through the airflow generator, so that the specific gravity is reduced, the flow speed of the medium is increased, meanwhile, the medium is boosted behind, and the blockage clearing device is controlled to clear the blockage of the medium conveying pipe regularly or as required under the clamping of flow control and boosting, so that no medium accumulation and blockage in the medium conveying pipe are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of medium processing devices for closed or hazardous spaces, in particular to a flow-controlling, boosting and vacuuming medium conveying device capable of clearing blockages. Background Art

[0002] The confined space described in the utility model includes medium processing spaces in confined spaces such as municipal pipeline dredging, large oil tank oil residue cleaning, etc.; the hazardous space described in the utility model includes hazardous medium processing spaces such as chemical reaction tanks, etc.

[0003] CN117927779A discloses a pipeline desilting robot and a desilting device with multi-stage boosting for clearing blockage and controlling flow. The clearing blockage and controlling flow booster 4 includes, from left to right, a front valve 41, an air generator 3 and a rear valve 42 which are connected to each other. The front valve 41 is connected to the silt suction head 1, and the rear valve 42 is connected to the silt suction pipe 2a. The clearing blockage and controlling flow booster can achieve the following technical effects during the desilting process:

[0004] Blockage clearing: refers to the medium blocking the sludge suction head. The air ejected from the airflow injection hole 34 is blocked by the rear valve 42. More and more air accumulated in the air generator 4 can only be pushed toward the front valve 41, and the target medium entering the air generator 3, the front valve 41, the connecting pipe 43, and the sludge suction head 1 together with the non-target medium are cleared out of the sludge suction head 1, thereby achieving the purpose of blockage clearing;

[0005] Flow control: refers to the mixing of air into the medium in the suction pipe to reduce the specific gravity of the medium, which is beneficial to the medium transportation;

[0006] Boosting: The blowing direction of the air generator in the sludge suction pipe is consistent with the flow direction of the medium, boosting the medium from the back.

[0007] Since the air pressure blown out by the high-pressure air pump is constant, the above-mentioned clearing is a short-distance clearing between the suction port and the rear valve, which is easier to clear by blowing air, and the flow control is only responsible for mixing air. However, the booster has high requirements for the medium, requiring the medium entering the suction pipe to be a benign medium, that is, a benign medium that is easy to absorb and flow, such as small pieces, small particles, mud, sand, water, etc. If the suction pipe enters non-benign media with poor fluidity and easy to clog, such as compacted objects, large pieces, segments, plates, etc., it will affect the medium transportation, and there are the following problems to be solved:

[0008] 1). These non-benign media settle to the bottom of the pipe due to their large mass, occupying the pipe space and affecting the flow of benign media;

[0009] 2) These non-benign media are prone to local accumulation and blockage due to their poor fluidity;

[0010] 3). If it is used to clear the blockage of the suction pipe, the silt removal device is used to clear the silt in the pipeline. The silt removal pipe has a long distance from the wellhead to the silt removal point. The constant air pressure boost from the air generator cannot achieve a complete clearing effect;

[0011] 4). Even if air generators are added in sections on the desilting pipe, it is difficult to push non-benign media;

[0012] 5). Even if the front valve and the rear valve are closed, the gas will be released instantly after the rear valve is opened after the gas is gathered in the clearing and flow control booster. However, since the clearing and flow control booster 4 does not have the conditions for compressed gas pressurization, it is also impossible to release high-pressure gas to clear the non-benign medium.

[0013] In view of the shortcomings of the existing technology, it is of great significance to provide a medium conveying device that can accurately control the medium flow, increase the medium flow rate, promote the medium, and completely clear the blockage. Utility Model Content

[0014] The utility model aims to avoid the shortcomings of the prior art and provide a flow-controlling, boosting and vacuum medium conveying device capable of clearing blockage.

[0015] The above-mentioned purpose of the utility model is achieved by the following technical means:

[0016] A flow-controlling, boosting and vacuum medium conveying device capable of clearing blockages,

[0017] From front to back, it includes: a suction head 1, a flow control booster 2, a blockage remover 3 and a medium delivery pipe 4;

[0018] It also includes a vacuum pump 5, a high-pressure air pump 6 and a controller 7; the rear end of the medium delivery pipe 4 is connected to the vacuum pump 5;

[0019] The flow control booster 2 includes a flow control valve 21 and an air flow generator 22, wherein the air flow generator 22 has an air inlet 221 and an air outlet 222, and the air flow direction of the air outlet 222 is consistent with the flow direction of the medium;

[0020] The blockage remover 3 includes a high-pressure gas storage tank 31, a connecting pipe 32 and an injection pipe 33; the high-pressure gas storage tank 31 is arranged on the connecting pipe 32, one end of the injection pipe 33 is connected to the high-pressure gas storage tank 31, and the other end is connected to the connecting pipe 32, and the air flow direction of the injection pipe 33 is consistent with the flow direction of the medium; an air release valve is arranged between the high-pressure gas storage tank 31 and the injection pipe 33;

[0021] The high-pressure air pump 6 is connected to the air inlet 221 of the airflow generator 22 and the high-pressure air storage tank 31 by pipelines, and each pipeline is provided with a solenoid valve;

[0022] The flow control valve 21 , the air release valve, the solenoid valve, the vacuum pump 5 and the high-pressure air pump 6 are all controlled by the controller 7 .

[0023] Optionally, the flow control valve 21 is a check valve 211 ; the check valve 211 is connected to the high-pressure air pump 6 via a pipeline.

[0024] Optionally, the flow control valve 21 is a pneumatic valve 212; the pneumatic valve 212 is connected to the high-pressure air pump 6 via a pipeline.

[0025] Furthermore, the airflow generator 22 has an air guide ring 223 , and the air guide ring 223 is provided with the air inlet 221 and the air outlet 222 .

[0026] Furthermore, the air guide ring 223 is regularly provided with a plurality of air outlets 222 and air ducts 224 matching the air outlets 222 .

[0027] Optionally, the air duct 224 is a straight air duct 2241 .

[0028] Optionally, the air duct 224 is a cyclone air duct 2242 .

[0029] Preferably, the medium delivery pipe 4 is provided with a plurality of the airflow generators 22 .

[0030] Preferably, the medium conveying pipe 4 is provided with a plurality of the blockage clearers 3 .

[0031] Optionally, the medium includes any one of the following: a benign conventional medium, an unbenign conventional medium, and a hazardous medium;

[0032] The benign conventional medium includes at least any one of the following: mud, sand, liquid, powder, small particles, small lumps, small fibers;

[0033] The non-benign conventional medium includes at least any one of the following: large particles, large agglomerates, large lumps, and large fibers;

[0034] The hazardous medium includes at least any one of the following: powdered chemicals, granular chemicals, liquid chemicals, and slurry chemicals.

[0035] The beneficial effects of adopting the above technical solution are:

[0036] 1) Flow control: The controller controls the normally open, normally closed, and adjusted flow control valve 21 to control the flow rate of the medium. When the medium passes through the air flow generator 22, it is mixed with air to reduce the specific gravity, and at the same time, the flow rate of the medium is increased.

[0037] 2) Boosting: The gas blown out by the airflow generator 22 can reduce the specific gravity of the medium and boost the medium at the back;

[0038] 3). Blockage clearing: When the medium conveying pipe sucks in non-benign media with large mass and easy to deposit, such as large particles, large agglomerates, large lumps, and large fibers, these non-benign media settle to the bottom of the medium conveying pipe due to their large mass, occupy the pipeline space, affect the flow of benign media, and cause poor fluidity, which can easily cause local accumulation and even blockage of the medium conveying pipe. Under the support of the flow control booster to control and boost the medium, the controller controls the blockage clearer 3 to clear the medium conveying pipe regularly or as needed, and clear the benign and non-benign media in the medium conveying pipe to ensure that there is no medium accumulation and blockage inside the medium conveying pipe.

[0039] 4). The utility model is suitable for medium treatment in confined spaces such as municipal pipeline desilting and large oil tanks, and is also suitable for hazardous medium treatment in chemical reaction tanks, and has a wide range of uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic diagram of a medium conveying device;

[0041] Figure 2 This is a schematic diagram of the medium channel when the check valve is normally open;

[0042] Figure 3 This is a schematic diagram of the medium channel when the check valve is in the normally closed state;

[0043] Figure 4 This is a schematic diagram of the medium channel when the pneumatic valve is normally open;

[0044] Figure 5 This is a schematic diagram of the medium channel when the pneumatic valve is in the normally closed state;

[0045] Figure 6 It is a schematic diagram of a flow control booster;

[0046] Figure 7 is a schematic diagram of an airflow generator having a cyclone air duct;

[0047] Figure 8 is a schematic diagram of an airflow generator having a straight air duct;

[0048] Fig. 9 It is a schematic diagram of the industrial control principle of the medium conveying device;

[0049] Fig.10 It is a schematic diagram of the industrial control principle of a high-lift medium conveying device with multiple airflow generators as boosters;

[0050] Fig.11 It is a schematic diagram of the industrial control principle of a high-lift medium conveying device with multiple blockage clearers for clearing blockages.

[0051] Among them, the suction head 1; the flow control booster 2; the flow control valve 21; the check valve 211; the pneumatic valve 212; the air flow generator 22; the air inlet 221; the air outlet 222; the air guide ring 223; the air duct 224; the straight air duct 2241; the cyclone air duct 2242; the blockage remover 3; the high-pressure air storage tank 31; the connecting pipe 32; the jet pipe 33; the medium delivery pipe 4; the vacuum pump 5; the high-pressure air pump 6; and the controller 7. DETAILED DESCRIPTION

[0052] The following is a clear and complete description of the technical solutions in the embodiments of the present invention 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, 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.

[0053] Example 1. Figure 1-9 A flow-controlling, boosting and vacuum medium conveying device capable of clearing blockage is shown.

[0054] From front to back, it includes: a suction head 1, a flow control booster 2, a blockage remover 3 and a medium delivery pipe 4;

[0055] The front end of the flow control booster 2 is connected to the suction head 1, and the rear end is connected to the blockage remover 3, and the rear end of the blockage remover 3 is connected to the medium delivery pipe 4;

[0056] It also includes a vacuum pump 5, a high-pressure air pump 6 and a controller 7; the rear end of the medium delivery pipe 4 is connected to the vacuum pump 5;

[0057] The flow control booster 2 includes a flow control valve 21 and an air flow generator 22, wherein the air flow generator 22 has an air inlet 221 and an air outlet 222, and the air flow direction of the air outlet 222 is consistent with the flow direction of the medium;

[0058] The blockage remover 3 includes a high-pressure gas storage tank 31, a connecting pipe 32 and an injection pipe 33; the high-pressure gas storage tank 31 is arranged on the connecting pipe 32, one end of the injection pipe 33 is connected to the high-pressure gas storage tank 31, and the other end is connected to the connecting pipe 32, and the air flow direction of the injection pipe 33 is consistent with the flow direction of the medium; an air release valve is arranged between the high-pressure gas storage tank 31 and the injection pipe 33;

[0059] The high-pressure air pump 6 is connected to the air inlet 221 of the airflow generator 22 and the high-pressure air storage tank 31 by pipelines, and each pipeline is provided with a solenoid valve;

[0060] High-pressure gas storage tanks use internal pressure to compress gas to a high-pressure state and quickly release gas when needed. Before use, the gas enters the storage tank. When the set pressure is reached, the gas filling is stopped to maintain the high-pressure state.

[0061] The flow control valve 21 , the air release valve, the solenoid valve, the vacuum pump 5 and the high-pressure air pump 6 are all controlled by the controller 7 .

[0062] Suction medium: The controller starts the vacuum pump 5 to draw a vacuum, and the medium enters the medium conveying pipe 4 through the suction head 1, the flow control booster 2, and the blockage remover 3;

[0063] Flow control: The controller controls the normally open, normally closed, and regulating states of the flow control valve 21. The regulating states are such as half-open, slightly open, and fully open but not fully open to control the flow rate of the medium passing through, including the following conveying states:

[0064] 1). When the flow control valve is normally open, the medium is mixed with air when passing through the air flow generator 22, thereby reducing the specific gravity. At the same time, the flow rate of the medium is also increased, and the medium is continuously transported in the medium transport pipe 4 with reduced specific gravity.

[0065] 2). In the normally closed state, the medium is blocked before the flow control valve, and the gas blown out by the air flow generator 22 can only propel the medium from the back.

[0066] 3). In the intermittent opening and closing state, the medium mixed with air is transported in sections, that is, the medium is transported in sections of air.

[0067] 4). In the regulating state, the flow rate of the medium entering the medium conveying pipe is limited, and the specific gravity of the medium is further reduced compared to the normally open state, presenting a continuous conveying state.

[0068] Boosting: The above 1-4 conveying states all have a boosting effect on the medium in the medium conveying pipe at the same time. The boosting effect of the second state in the normally closed state is the best, and the third state in the intermittent opening and closing state is second.

[0069] Blockage clearing: When the medium delivery pipe sucks in non-benign media with large mass and easy to deposit, such as large particles, large compacted materials, large lumps, and large fibers, these non-benign media settle to the bottom of the medium delivery pipe due to their large mass, occupy the pipeline space, and affect the flow of benign media. In addition, these non-benign media have poor fluidity due to their large mass and are prone to cause local accumulation and even blockage of the medium delivery pipe. In view of this, the controller controls the blockage clearer 3 to clear the medium delivery pipe regularly or as needed to ensure that there is no medium accumulation and blockage inside the medium delivery pipe.

[0070] Blockage clearing process: the controller controls the high-pressure air pump 6 to inflate the high-pressure gas tank 31 through the pipeline, the controller controls the flow control valve to be normally closed to block the gas from flowing only in the medium direction, the controller controls the air release valve to open, and the gas pressurized by the high-pressure gas tank 31 is quickly released through the jet pipe 33, and all benign and non-benign media in the medium delivery pipe are emptied with a gas volume and pressure several times that of the air flow generator 22, so as to achieve the purpose of thorough blockage clearing. After releasing the gas, the high-pressure gas tank 31 continues to inflate and wait for the next release instruction.

[0071] The entire clearing process is based on the boosting of the flow control booster and the clearing medium. The flow control booster and the clearing device have the following unexpected technical effects:

[0072] With the help of the flow control booster, the medium with reduced specific gravity flows dynamically in the medium delivery pipe by inertia, and then the blockage remover intervenes to quickly release the gas volume and pressure several times that of the air flow generator 22, which can easily push and clear the benign and non-benign media in the medium delivery pipe;

[0073] On the contrary, if the medium does not reduce its specific gravity, it will be difficult to push the medium even with the intervention of the blockage remover;

[0074] Even if the specific gravity of the medium is reduced, if the medium is stationary in the medium conveying pipe, the longer the stationary time, the stronger the adsorption force of the medium in the medium conveying pipe, and the more difficult it is to clear the blockage. At this time, even with the intervention of the blockage remover, it is difficult to push and clear the medium;

[0075] Therefore, with the help of the flow control booster, the clearing device is started regularly or as needed to clear all benign and non-benign media to ensure that there is no media accumulation and blockage inside the media delivery pipe.

[0076] Embodiment 2. This embodiment is one embodiment of a flow control valve, such as Figure 2-3 As shown, the flow control valve 21 is a check valve 211 ; the check valve 211 is connected to the high-pressure air pump 6 via a pipeline.

[0077] Embodiment 3. This embodiment is another embodiment of the flow control valve, such as Figure 4-5 As shown, the flow control valve 21 is a pneumatic valve 212; the pneumatic valve 212 is connected to the high-pressure air pump 6 via a pipeline.

[0078] The flow control valve 21 described in the present application can realize conventional functions such as normally open and normally closed of the flow control valve 21, and is not limited to the check valve and pneumatic valve described in the embodiment, such as hydraulic valve, electric control valve, etc.

[0079] Embodiment 4. This embodiment shows an air guide ring, such as Figure 1-8 As shown, the airflow generator 22 has an air guide ring 223 , and the air guide ring 223 is provided with the air inlet 221 and the air outlet 222 .

[0080] Embodiment 5. This embodiment further illustrates an air guide ring, such as Figure 1-8 As shown, the air guide ring 223 is regularly provided with a plurality of air outlets 222 and air ducts 224 matching the air outlets 222 .

[0081] Embodiment 6. This embodiment shows one of the air duct structures, such as Figure 8As shown, the air duct 224 is a straight air duct 2241. The straight air duct blows out straight air, which reduces the specific gravity of the medium and helps to push the medium, and the medium conveying effect is better.

[0082] Embodiment 7. This embodiment shows another air duct structure, such as Figure 7 As shown, the air duct 224 is a cyclone air duct 2242. The cyclone air duct blows out oblique wind, driving the medium in the pipeline to be in a swirling conveying state, reducing the specific gravity of the medium and boosting the medium, so that the medium conveying effect is better.

[0083] Embodiment 8. This embodiment shows a high-lift medium delivery pipe boosted by multiple airflow generators 22, such as Fig.10 As shown, the medium conveying pipe 4 is provided with a plurality of the airflow generators 22. If the medium conveying device is used for long-distance and high-lift medium conveying, on the basis of the flow control booster 2 and the blockage remover 3 at the front section of the medium conveying device, a plurality of airflow generators 22 are further arranged at intervals on the medium conveying pipe, which can effectively make up for the technical problem of weak boosting at the rear section of the medium conveying pipe.

[0084] Embodiment 9. This embodiment shows that a plurality of blockage clearing devices 3 cooperate with a high-lift medium delivery pipe to clear blockage, such as Fig.11 As shown, the medium delivery pipe 4 is provided with a plurality of the blockage clearing devices 3. Compared with the embodiment 9, this embodiment has a more obvious boosting effect and can make up for the technical problem of lack of follow-up power in the blockage clearing process.

[0085] Embodiment 10. This embodiment lists the conveying targets of the medium conveying device: Figure 2-5 As shown,

[0086] The medium includes any one of the following: benign conventional medium, non-benign conventional medium and hazardous medium;

[0087] The benign conventional medium includes at least any one of the following: mud, sand, liquid, powder, small particles, small lumps, small fibers;

[0088] The non-benign conventional medium includes at least any one of the following: large particles, large agglomerates, large lumps, and large fibers;

[0089] The hazardous medium includes at least any one of the following: powdered chemicals, granular chemicals, liquid chemicals, and slurry chemicals.

[0090] Example 11. Confined space medium treatment example

[0091] Taking municipal pipeline desilting as an example, the pipeline is an underground pipeline network and belongs to a confined space. When a section of the pipeline is silted up, the medium conveying device goes down the well and reaches the silting point, the controller turns on the vacuum pump 5 to draw a vacuum, and the medium enters the medium conveying pipe 4 through the suction head 1, the flow control booster 2, and the blockage remover 3; the controller controls the normally open, normally closed, and adjustment states of the flow control valve 21. When the medium passes through the airflow generator 22, it is mixed with air to reduce the specific gravity and promote the medium to move forward in the medium conveying pipe; pipeline desilting is mainly aimed at benign media or non-benign media such as mud, sand, water, stones, wooden boards, branches, fibers, lumps, and plates, and non-benign media are prone to accumulation and blockage; the controller controls the blockage remover 3 to clear the medium conveying pipe regularly or on demand, and the blockage remover 3 clears all benign media and non-benign media in the medium conveying pipe with an air volume and air pressure several times that of the airflow generator 22 to ensure that there is no medium accumulation and blockage inside the medium conveying pipe. If the distance from the wellhead to the siltation point is long and the lift is high, it may be considered to add a number of airflow generators 22 or blockage clearers 3 to the medium conveying pipe to compensate for the problem of weak boosting or blockage clearing over a long distance.

[0092] Taking the cleaning of oil residue from a large oil tank as an example, the oil tank is a confined space, and the medium conveying device enters the oil tank. The controller turns on the vacuum pump 5 to draw a vacuum, and the medium enters the medium conveying pipe 4 through the suction head 1, the flow control booster 2, and the blockage remover 3; the controller controls the normally open, normally closed, and adjustment states of the flow control valve 21. When the medium passes through the airflow generator 22, it is mixed with air to reduce the specific gravity and promote the medium to move forward in the medium conveying pipe; the oil residue mainly targets non-benign media such as large particles, large agglomerates, and large lumps, as well as hazardous media such as granular chemicals, liquid chemicals, and slurry chemicals. Non-benign media and slurry chemicals are prone to accumulation and blockage; the controller controls the blockage remover 3 to clear the medium conveying pipe regularly or as needed. The blockage remover 3 clears all non-benign media and slurry chemicals in the medium conveying pipe with an air volume and air pressure several times that of the airflow generator 22 to ensure that there is no medium accumulation and blockage inside the medium conveying pipe. If the distance from the outlet to the slag removal point is long and the lift is high, it may be considered to add a number of airflow generators 22 or blockage removers 3 to the medium conveying pipe to compensate for the problem of weak boosting or blockage removal over a long distance.

[0093] Example 12. Hazardous media treatment example

[0094] Taking the cleaning of chemical residues in a chemical reaction pool as an example, the chemical reaction pool is a confined space rich in hazardous substances. The medium conveying device enters the chemical reaction pool, and the controller turns on the vacuum pump 5 to draw a vacuum. The medium enters the medium conveying pipe 4 through the suction head 1, the flow control booster 2, and the blockage remover 3; the controller controls the normally open, normally closed, and adjustable states of the flow control valve 21. When the medium passes through the airflow generator 22, it is mixed with air to reduce the specific gravity and promote the medium to move forward in the medium conveying pipe; the residue is mainly for hazardous media such as powdered chemicals, granular chemicals, liquid chemicals, and slurry chemicals. Slurry chemicals are prone to blockage; the controller controls the blockage remover 3 to clear the medium conveying pipe regularly or as needed. The blockage remover 3 clears all hazardous media in the medium conveying pipe with an air volume and air pressure several times that of the airflow generator 22 to ensure that there is no medium accumulation and blockage inside the medium conveying pipe. If the distance from the outlet to the residue point is long and the lift is high, it may be considered to add a number of airflow generators 22 or blockage clearers 3 to the medium conveying pipe to compensate for the problem of weak boosting or blockage clearing over a long distance.

[0095] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A flow-controlling and vacuum medium conveying device capable of clearing blockages, characterized in that: The device comprises, from front to back: a suction head (1), a flow control booster (2), a blockage remover (3) and a medium delivery pipe (4); It also includes a vacuum pump (5), a high-pressure air pump (6) and a controller (7); the rear end of the medium delivery pipe (4) is connected to the vacuum pump (5); The flow control booster (2) comprises a flow control valve (21) and an air flow generator (22), wherein the air flow generator (22) has an air inlet (221) and an air outlet (222), and the air flow direction of the air outlet (222) is consistent with the flow direction of the medium; The blockage clearer (3) comprises a high-pressure gas storage tank (31), a connecting pipe (32) and an air jet pipe (33); the high-pressure gas storage tank (31) is arranged on the connecting pipe (32); one end of the air jet pipe (33) is connected to the high-pressure gas storage tank (31) and the other end is connected to the connecting pipe (32); the air flow direction of the air jet pipe (33) is consistent with the flow direction of the medium; an air release valve is arranged between the air jet pipe (33) and the high-pressure gas storage tank (31); The high-pressure air pump (6) is connected to the air inlet (221) of the airflow generator (22) and the high-pressure air storage tank (31) via pipelines, and each pipeline is provided with a solenoid valve; The flow control valve (21), the air release valve, the solenoid valve, the vacuum pump (5) and the high-pressure air pump (6) are all controlled by the controller (7).

2. The flow-controlling and vacuum-assisted medium conveying device capable of clearing blockage according to claim 1, characterized in that: The flow control valve (21) is a check valve (211); the check valve (211) is connected to a high-pressure air pump (6) via a pipeline.

3. The flow-controlling and vacuum-assisted medium conveying device capable of clearing blockage according to claim 1, characterized in that: The flow control valve (21) is a pneumatic valve (212); the pneumatic valve (212) is connected to a high-pressure air pump (6) via a pipeline.

4. The flow-controlling and vacuum-assisted medium conveying device capable of clearing blockage according to claim 1, characterized in that: The airflow generator (22) has an air guide ring (223), and the air guide ring (223) is provided with the air inlet (221) and the air outlet (222).

5. The flow-controlling and vacuum-assisted medium conveying device capable of clearing blockages as claimed in claim 4, characterized in that: The air guide ring (223) is regularly provided with a plurality of air outlets (222) and air ducts (224) matching the air outlets (222).

6. The flow-controlling and vacuum-assisted medium conveying device capable of clearing blockages as claimed in claim 5, characterized in that: The air duct (224) is a straight air duct (2241).

7. The flow-controlling and vacuum-assisted medium conveying device capable of clearing blockages as claimed in claim 5, characterized in that: The air duct (224) is a cyclone air duct (2242).

8. The flow-controlling and vacuum-assisted medium conveying device capable of clearing blockages as claimed in claim 1, characterized in that: The medium conveying pipe (4) is provided with a plurality of the airflow generators (22).

9. The flow-controlling and vacuum-assisted medium conveying device capable of clearing blockage according to claim 1, characterized in that: The medium conveying pipe (4) is provided with a plurality of the blockage clearing devices (3).

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