Movable agent adding tank with material sucking and returning functions

Abstract

The utility model relates to the field of chemical equipment, in particular to a movable agent adding tank with material sucking and returning functions. Comprising a trolley; the storage tank is arranged on the trolley; a liquid level meter is arranged on one side, and a thermometer, a pressure gauge and a suction pipe are arranged on the top; a material returning / filling pipe is arranged at the bottom, and a material returning / filling pipe quick connector is arranged on the material returning / filling pipe; the material collector is arranged at the top of the material storage tank; a detachable filter screen structure is arranged on the base; the pneumatic vacuum generator is arranged at the top of the material storage tank and is communicated with the interior of the material storage tank through a valve; an atmosphere emptying port, a torch end quick connector and a nitrogen quick connector are connected to the torch end quick connector through valves respectively, and the atmosphere emptying port is connected with an activated carbon adsorption tank. Different from the open-type transportation in the traditional technology, the closed transportation is realized, the direct contact with the air is avoided, the volatilization of chemical materials is avoided, and operators are prevented from inhaling toxic and harmful volatile materials.

Description

Technical Field

[0001] The utility model relates to the field of chemical equipment, in particular to a mobile dosing tank with material suction and material return functions. Background Art

[0002] At present, chemical production equipment will inevitably produce various liquid wastes during normal operation and overhaul, and most of the liquid wastes are highly volatile and toxic. These wastes need to be transported to underground waste oil tanks for storage and await centralized treatment. During transportation, they are very easy to evaporate into the air. If inhaled by operators, they will cause harm to health. If they escape into the air in the form of VOCs, they will cause damage to the environment. In addition, chemical plants will inevitably need to add various liquid industrial additives during production and maintenance, and most of the liquid industrial additives are toxic, harmful and corrosive. The additives must be added to the additive tank by on-site filling. If operators accidentally inhale or get contaminated, it will cause harm to human health.

[0003] With regard to the actual situation faced by the above chemical plants, the existing technology has the following shortcomings:

[0004] 1. Chemical materials are difficult to collect and recycle after being sprayed onto the ground or in trenches;

[0005] 2. When adding liquid industrial additives, they will directly contact with the atmosphere and can be easily inhaled by workers or sprayed on the skin, causing health damage and polluting the environment;

[0006] 3. It is difficult to add barreled additives into the storage tank without the help of a self-priming pump, and the self-priming pump is prone to corrode the original parts inside the pump;

[0007] 4. When waste materials are recycled into the waste oil tank, the container will be directly aimed at the discharge port for discharge. The waste materials will be in direct contact with the atmosphere and the waste oil tank will be connected to the flare line with back pressure, which is prone to spraying accidents. Utility Model Content

[0008] The utility model provides a mobile dosing tank with material suction and material return functions, and aims to solve the technical problems existing in the prior art.

[0009] To achieve the above purpose, the technical solution of the utility model is:

[0010] The utility model provides a mobile dosing tank with material suction and material return functions, comprising:

[0011] trolley;

[0012] A material storage tank is arranged on the trolley; a liquid level gauge is arranged on one side, a thermometer and a pressure gauge are arranged on the top, and a suction pipe connected to the inside of the tank through a valve is also arranged on the top; a material withdrawal / filling pipe connected to the inside of the tank through a valve is arranged at the bottom, and a material withdrawal / filling pipe quick connector is arranged on the material withdrawal / filling pipe;

[0013] A material collector is arranged on the top of the storage tank and is connected to the inside of the storage tank through a valve; a detachable filter structure is arranged on the material collector;

[0014] A pneumatic vacuum generator is arranged on the top of the storage tank and is connected to the interior of the storage tank through a valve; an atmospheric vent, a flare end quick connector and a nitrogen quick connector are connected to it through valves respectively, and the atmospheric vent is connected to an activated carbon adsorption tank.

[0015] Furthermore, the trolley includes four wheels, a trolley handrail, two tank body brackets and two tank body guard plates.

[0016] Furthermore, the wheel is provided with a brake device.

[0017] Furthermore, the top of the tank support is provided with an arc-shaped groove matching the storage tank, the tank guard plate is an arc-shaped plate matching the storage tank, and the tank guard plate is arranged on the arc-shaped groove of the tank support.

[0018] Furthermore, the front end plate and the rear end plate of the storage tank are fixed by bolts.

[0019] Furthermore, an electrostatic grounding flat iron is provided on the side wall of the storage tank.

[0020] Furthermore, the main body of the material collector is a tubular structure with a large opening at the top and a sealed bottom at the bottom. A flange connecting pipe is provided at the bottom of the material collector, and the flange connecting pipe is connected to the inside of the storage tank through a valve.

[0021] Furthermore, a bracket is arranged in the material collector, and the filter structure is arranged on the bracket; the filter structure includes an outer ring of a convenient filter, two hollow grid plates, several layers of metal mesh and several fixing bolts.

[0022] Furthermore, a handle for taking out the filter is provided on the upper surface of the hollow grid plate.

[0023] Furthermore, the outlet end of the pneumatic vacuum generator is respectively connected to an atmospheric vent and a flare end quick connector through a tee, and the atmospheric vent and the flare end quick connector are opened and closed by valves.

[0024] The beneficial effects achieved by the utility model are:

[0025] 1. Different from the open transportation of traditional technology, the utility model realizes closed transportation, eliminates direct contact with air, avoids the volatilization of chemical materials, and prevents operators from inhaling toxic and harmful volatile materials;

[0026] 2. The utility model is provided with a pressure gauge, a thermometer and a liquid level gauge to detect the pressure, temperature and liquid level in the tank at all times.

[0027] 3. The utility model generates negative pressure through a pneumatic vacuum generator, extracts barreled additives through pressure difference, and can also easily absorb chemical materials sprayed on the ground or in the ditch; and the pneumatic vacuum generator will not come into direct contact with chemical liquid materials, so there is no need to worry about the internal structure being corroded, which increases the service life; in addition, the waste gas generated during the working process is discharged to the torch or the atmospheric vent with an activated carbon adsorption tank, meeting the environmental protection requirements;

[0028] 4. The ends on both sides of the storage tank of the utility model are connected by bolts, which is convenient for maintenance and cleaning.

[0029] 5. The material collector of the utility model is provided with a detachable filter screen to prevent impurities from entering the closed discharge system, and the filter screen is easy to clean;

[0030] 6. The driving gas of the pneumatic vacuum generator of the utility model is nitrogen, which avoids the possibility of air intrusion;

[0031] 7. The utility model has a movable cart that can be moved at any time, and the cart is equipped with a brake device to achieve stability;

[0032] 8. The utility model makes the close-packed system not directly connected to the atmosphere, thus achieving intrinsic safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 This is a schematic diagram of the overall structure of the utility model Figure 1 .

[0035] Figure 2 This is a schematic diagram of the overall structure of the utility model Figure 2 .

[0036] Figure 3 It is a detail diagram of the material collector of the utility model.

[0037] In the figure, 1. trolley; 11. wheels; 12. trolley handrail; 13. tank support; 14. tank guard plate; 2. storage tank; 21. liquid level gauge; 22. thermometer; 23. pressure gauge; 24. return / filling pipe; 25. return / filling pipe quick connector; 26. static grounding flat iron; 27. suction pipe; 3. material collector; 31. convenient filter outer ring; 32. convenient filter handle; 33. hollow grid; 34. metal mesh; 35. fixing bolt; 36. bracket; 37. flange connecting pipe; 4. pneumatic vacuum generator; 41. tee; 42. activated carbon adsorption tank; 43. atmospheric vent; 44. torch end quick connector; 45. nitrogen quick connector. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0041] In order to achieve safe, environmentally friendly and closed material withdrawal, the utility model provides a mobile dosing tank with material suction and withdrawal functions, which is different from the open mouth of the traditional material withdrawal port; the utility model can reduce the contact of personnel with materials during the material discharging process to reduce the harm of materials to the human body, and also reduce the probability of fire and explosion accidents caused by static electricity carried by the human body. It can be moved at any time to save time and effort, and can realize the use of multiple materials and avoid excessive capital investment. The utility model patent can both withdraw materials and add additives, generate vacuum through the pneumatic vacuum generator 4, and have an activated carbon adsorption tank 42 to absorb odor when it is connected to the atmosphere, realizing closed transportation and completely anaerobic operation, adding an electrostatic grounding clamp, which can effectively avoid the harm caused by static electricity, adding a filter screen at the material collection port can ensure the cleanliness of the material and prevent impurities from entering the closed discharge system, safe and environmentally friendly, realizing closed transportation, effectively avoiding the harm caused by static electricity, adding a filter screen at the material collection port to ensure the cleanliness of the material, so that impurities are prevented from entering the closed discharge system, and convenient modification, only need to install the material withdrawal valve group above the flange of the material withdrawal port.

[0042] like Figures 1 to 3 As shown, the mobile dosing tank comprises:

[0043] Trolley 1;

[0044] A material storage tank 2 is arranged on the trolley 1; a liquid level gauge 21 is arranged on one side, a thermometer 22 and a pressure gauge 23 are arranged on the top, and a suction pipe 27 connected to the inside of the tank through a valve is also arranged on the top; a material withdrawal / filling pipe 24 connected to the inside of the tank through a valve is arranged at the bottom, and a material withdrawal / filling pipe quick connector 25 is arranged on the material withdrawal / filling pipe 24;

[0045] The material collector 3 is arranged on the top of the storage tank 2 and is connected to the inside of the storage tank 2 through a valve; a detachable filter structure is arranged on the material collector 3;

[0046] A pneumatic vacuum generator 4 is arranged on the top of the storage tank 2 and is connected to the interior of the storage tank 2 through a valve; an atmospheric vent 43, a flare end quick connector 44 and a nitrogen quick connector 45 are connected thereto through valves respectively, and the atmospheric vent 43 is connected to an activated carbon adsorption tank 42.

[0047] The trolley 1 includes four wheels 11, a trolley handrail 12, two tank body brackets 13 and two tank body guard plates 14; the wheels 11 are provided with brake devices, and the four wheels 11 are respectively arranged near the four end corners of the bottom of the trolley 1; the trolley handrail 12 is an n-type tube, and the trolley handrail 12 is arranged at the tail of the trolley 1 to facilitate the user to push the utility model; the top of the tank body bracket 13 is provided with an arc-shaped groove matching the storage tank 2, and the two tank body brackets 13 are arranged on the upper surface of the trolley 1; the tank body guard plate 14 is an arc-shaped plate matching the storage tank 2, and the tank body guard plate 14 is arranged on the arc-shaped groove of the tank body bracket 13, and the tank body guard plate 14 is used to increase the contact area between the storage tank 2 and the tank body bracket 13.

[0048] The storage tank 2 is arranged on the trolley 1 through the two tank supports 13, and a tank guard plate 14 is arranged between the storage tank 2 and the tank support 13. The front plate and the rear plate of the storage tank 2 are fixed by bolts to facilitate later maintenance and cleaning. A liquid level gauge 21 is arranged on one side of the storage tank 2, and a thermometer 22 and a pressure gauge 23 are arranged on the top of the storage tank 2. The pressure gauge 23 is connected to the inside of the storage tank 2 through a valve; a suction pipe 27 is also arranged on the top of the tank body, and the suction pipe 27 is connected to the inside of the storage tank 2 through a valve. The suction pipe 27 is used to connect with the pipeline and extract liquid materials through the pipeline; a return / filling pipe 24 is arranged at the bottom of the storage tank 2, and the return / filling pipe 24 is connected to the inside of the storage tank 2 through a valve, and a return / filling pipe quick connector 25 is arranged at the outer end of the return / filling pipe 24.

[0049] The inlet of the current underground waste oil tank is a funnel structure. In order to match the utility model, the inlet structure of the existing underground waste oil tank needs to be modified, and a thread joint and a corresponding valve are added to facilitate rapid connection with the return / filling pipe quick connector 25 of the utility model through a pipeline.

[0050] Furthermore, an electrostatic grounding flat iron 26 is provided on the side wall of the storage tank 2 to facilitate grounding, discharge static electricity, and prevent explosion accidents.

[0051] The main body of the material collector 3 is a tubular structure with a large opening at the top and a sealed bottom at the bottom. The bottom of the material collector 3 is provided with a flange connection pipe 37, and the flange connection pipe 37 is connected to the inside of the storage tank 2 through a valve; a bracket 36 is provided inside the material collector 3, and the filter structure is arranged on the bracket 36 to facilitate the replacement and cleaning of the filter structure. The filter structure includes a convenient filter outer ring 31, two hollow grid plates 33, several layers of metal mesh 34 and several fixing bolts 35; the lower edge of the convenient filter outer ring 31 is fixed to the outer edge of one of the hollow grid plates 33, the metal mesh 34 is arranged on the upper surface of this hollow grid plate 33, and another hollow grid plate 33 is arranged on the metal mesh 34 (that is, the two hollow grid plates 33 sandwich several layers of the metal mesh 34), and the two hollow grid plates 33 and the metal mesh 34 are fixed by fixing bolts 35.

[0052] Furthermore, a filter screen handle 32 is provided on the upper surface of the hollow grid plate 33 to facilitate taking out the filter screen structure.

[0053] The root of the pneumatic vacuum generator 4 is connected to the storage tank 2 through a valve, and the inlet end of the pneumatic vacuum generator 4 is connected to a nitrogen quick connector 45 through a valve. The nitrogen quick connector 45 is used to connect to a nitrogen source. The pneumatic vacuum generator 4 of the utility model generates negative pressure or high pressure through high-speed nitrogen; the outlet end of the pneumatic vacuum generator 4 is respectively connected to an atmospheric vent 43 and a torch end quick connector 44 through a tee 41, and the atmospheric vent 43 and the torch end quick connector 44 are opened and closed by a valve, and the end of the atmospheric vent 43 is connected to an activated carbon adsorption tank 42; when the stored material in the storage tank 2 is non-toxic and harmless, the valve at the atmospheric vent 43 is opened to directly connect and pump; when the stored material in the storage tank 2 is toxic and harmful, the torch end quick connector 44 is first connected to the torch in the factory through a pipeline, and then the valve at the torch end quick connector 44 is opened to prevent leakage of toxic and harmful stored materials.

[0054] The pneumatic vacuum generator 4 adopts the existing technology and is an outsourced part, and its structure and principle are not described in detail.

[0055] The purpose of this utility model includes the following two aspects:

[0056] Use 1: Collect waste materials for return. Method 1: First, connect the static grounding through the static grounding flat iron 26, then close all valves and only open the valve of the atmospheric vent 43 or the valve at the torch end quick connector 44 (depending on the residual material in the tank, non-toxic and odorless exhaust to the atmosphere, toxic and odorous exhaust to the torch), use the pneumatic vacuum generator 4 to inject high-speed nitrogen to generate negative pressure, and use the pressure gauge 23 to see the size of the negative pressure, and then use the suction pipe 27 to connect the hose to absorb the material. Method 2: Close all valves and pour the waste into the material collector 3 (when the waste is non-toxic and harmless, such as wastewater), then open the valve at the root of the material collector 3, and at the same time open the valve to the atmosphere, the material will flow into the tank. Observe the liquid level in the tank through the liquid level meter 21. When the collection is completed, push the utility model to the underground waste oil tank, connect the return / filling pipe quick connector 25 and the wire connector of the underground waste oil tank through a pipeline, then close all valves, open the valve at the nitrogen quick connector 45 and the valve at the root of the pneumatic vacuum generator 4 to supplement the positive pressure, and close the two valves after the pressure in the tank is supplemented, open the valve at the return / filling pipe 24, and return the material to the underground waste oil tank.

[0057] Use 2: When filling industrial additives: first connect the electrostatic grounding through the electrostatic grounding flat iron 26, then close all valves and only open the valve leading to the atmosphere or the torch (depending on the residual material in the tank, non-toxic and odorless exhaust to the atmosphere, toxic and odorous exhaust to the torch), use the pneumatic vacuum generator 4 to inject high-speed nitrogen to generate negative pressure, and use the pressure gauge 23 to see the size of the negative pressure, and then use the suction pipe 27 to connect the hose to absorb the liquid industrial additives. Or close all valves by pouring the industrial additives into the material collector 3, then open the valve at the root of the material collector 3, and open the valve leading to the atmosphere, and the material will flow into the tank. Observe the liquid level in the tank through the liquid level gauge 21, close all valves when the liquid level reaches the requirement, open the valve at the nitrogen quick connector 45 and open the nitrogen to supplement the positive pressure (depending on the height of the additive storage tank to supplement the pressure), and then connect the return / filling pipe quick connector 25 to the filling port of the additive tank to be filled with industrial additives through the pipeline and fill until there is no liquid level in the tank.

[0058] Specifically, the operating procedures of the utility model are:

[0059] 1. Material Return

[0060] 1. Push the mobile dosing tank to the material storage area;

[0061] 2. Connect the electrostatic grounding flat iron 26 with an electrostatic grounding clamp;

[0062] 3. Check that all valves are closed and only open the valve at 23 on the pressure gauge;

[0063] 4. Connect the nitrogen line to the nitrogen connector of the pneumatic vacuum generator 4;

[0064] 5. Depending on the material conditions, open the valve at the atmospheric vent 43 of the pneumatic vacuum generator or the valve at the quick connector 44 at the torch end;

[0065] 6. Open the valve at the root of the nitrogen line and the pneumatic vacuum generator 4 to evacuate the air. After observing the pressure gauge at 23 to 50Kpa (A), close the valve at the nitrogen quick connector 45 and close the valve leading to the flare or atmosphere.

[0066] 7. Open the valve at the suction pipe 27, align the suction hose with the material barrel to suck the material, and observe the liquid level meter 21 to determine the remaining material. If the negative pressure is not enough, repeat step 6;

[0067] 8. After the remaining material is sucked out, close the valve at the suction pipe 27;

[0068] 9. Connect the return / filling pipe quick connector 25 to the waste oil tank return line, make sure that all valves except the valve at the pressure gauge 23 are closed, open the valve at the nitrogen quick connector 45 and the valve at the root of the pneumatic vacuum generator 4 to charge with nitrogen. If the height is ≤10 meters, observe that the pressure gauge 23 does not exceed 200Kpa (A).

[0069] 10. Open the valve of the material withdrawal / filling pipe 24 and the valve of the waste oil tank material withdrawal line to withdraw the material, observe the liquid level gauge 21, until all the liquid in the tank is withdrawn to the waste oil tank, and resume the process and push the equipment to a cool place.

[0070] 2. Add additives

[0071] 1. Push the mobile dosing tank to the material storage area;

[0072] 2. Connect the electrostatic grounding flat iron 26 with an electrostatic grounding clamp;

[0073] 3. Check that all valves are closed and only the valve at 23 on the pressure gauge is open;

[0074] 4. Connect the nitrogen line to the nitrogen quick connector 45 of the pneumatic vacuum generator 4;

[0075] 5. Depending on the material conditions, open the valve at the atmospheric vent 43 of the pneumatic vacuum generator or the valve at the quick connector 44 at the torch end;

[0076] 6. Open the nitrogen line and the valve at the root of the pneumatic vacuum generator 4 to evacuate the air. After observing the pressure gauge at 23 to 50Kpa (A), close the valve at the nitrogen quick connector 45 and the valve leading to the flare or atmosphere.

[0077] 7. Open the valve at the suction pipe 27, align the suction hose with the additive barrel to suck the material, and observe the liquid level gauge 21 and the remaining material during the process. If the negative pressure is not enough, repeat step 6;

[0078] 8. After the remaining material is sucked out, close the valve at the suction pipe 27;

[0079] 9. Connect the return / filling pipe quick connector 25 to the additive tank, open only the valve at the nitrogen quick connector 45 and the valve at the root of the pneumatic vacuum generator 4 to charge with nitrogen, and add appropriate pressure depending on the height of the additive tank, 200Kpa (A) within 10 meters. If the pressure is not enough, continue the above steps to add pressure.

[0080] 10. Open the valve at the return / filling pipe 24 and the valve at the filling port of the additive tank to fill, observe the liquid level gauge 21, until all the liquid in the tank is filled into the additive tank, and resume the process and push the equipment to a cool place.

[0081] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A mobile dosing tank with material suction and material return functions, characterized in that: include: Trolley (1); A material storage tank (2) is arranged on the trolley (1); a liquid level gauge (21) is arranged on one side, a thermometer (22) and a pressure gauge (23) are arranged on the top, and a suction pipe (27) is also arranged on the top and is connected to the inside of the storage tank via a valve; a material return / filling pipe (24) is arranged on the bottom and is connected to the inside of the storage tank via a valve, and a material return / filling pipe quick connector (25) is arranged on the material return / filling pipe (24); A material collector (3) is arranged on the top of the material storage tank (2) and is connected to the interior of the material storage tank (2) through a valve; a detachable filter structure is arranged on the material collector; A pneumatic vacuum generator (4) is arranged on the top of the storage tank (2) and is connected to the interior of the storage tank (2) through a valve; an atmospheric vent (43), a flare end quick connector (44) and a nitrogen quick connector (45) are connected to it through valves respectively, and the atmospheric vent (43) is connected to an activated carbon adsorption tank (42).

2. The mobile dosing tank with material suction and material return functions according to claim 1 is characterized in that: The trolley (1) comprises four wheels (11), a trolley handrail (12), two tank body supports (13) and two tank body guard plates (14).

3. The mobile dosing tank with material suction and material return functions according to claim 2 is characterized in that: The wheel (11) is provided with a brake device.

4. The mobile dosing tank with material suction and material return functions according to claim 2 is characterized in that: The top of the tank support (13) is provided with an arc-shaped groove matching the storage tank (2); the tank guard plate (14) is an arc-shaped plate matching the storage tank (2); and the tank guard plate (14) is arranged on the arc-shaped groove of the tank support (13).

5. The mobile dosing tank with material suction and material withdrawal functions according to claim 1 is characterized in that: The front end plate and the rear end plate of the storage tank (2) are fixed by bolts.

6. The mobile dosing tank with material suction and material return functions according to claim 1 is characterized in that: An electrostatic grounding flat iron (26) is provided on the side wall of the material storage tank (2).

7. The mobile dosing tank with material suction and material withdrawal functions according to claim 1 is characterized in that: The main body of the material collector (3) is a tubular structure with a large opening at the top and a sealed bottom at the bottom. A flange connection pipe (37) is provided at the bottom of the material collector (3), and the flange connection pipe (37) is connected to the inside of the storage tank (2) through a valve.

8. A mobile dosing tank with material suction and material return functions according to claim 1 or 7, characterized in that: A bracket (36) is arranged inside the material collector (3), and the filter structure is arranged on the bracket (36); the filter structure comprises a convenient filter outer ring (31), two hollow grid plates (33), a plurality of layers of metal mesh (34) and a plurality of fixing bolts (35).

9. The mobile dosing tank with material suction and material return functions according to claim 8, characterized in that: The upper surface of the hollow grid plate (33) is also provided with a handle (32) for taking out the filter screen.

10. The mobile dosing tank with material suction and material return functions according to claim 1, characterized in that: The outlet end of the pneumatic vacuum generator (4) is respectively connected to an atmospheric vent (43) and a torch end quick connector (44) via a tee (41), and the atmospheric vent (43) and the torch end quick connector (44) are opened and closed by valves.

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