Parallel type feeding device for preparing defoaming agent for oil and gas field

Abstract

The invention discloses a parallel type feeding device for preparing defoaming agents for oil and gas fields, and belongs to the technical field of defoaming agent preparation.The parallel type feeding device comprises a kettle body, a material conveying component is arranged in the kettle body and on the inner side and the outer side of a top cover jointly, and the material conveying component comprises a first conveying pipe fixedly connected to the right side of the upper end of the top cover and obliquely arranged; a first conveying pipe is fixedly connected to the left side of the upper end of the top cover, a second conveying pipe is fixedly connected to the left side of the upper end of the top cover, and guide slopes are fixedly connected to the left side and the right side of the interior of the top cover. In the process of feeding different raw materials into the kettle body, the different raw materials can be firstly disorganized in advance, and the different raw materials are uniformly fed into the kettle body after being mixed, so that the phenomenon that the raw materials are accumulated after being fed into the kettle body is effectively avoided, and the dispersity of multiple groups of materials is improved; and subsequent processing of multiple groups of raw materials is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of defoamer preparation, and more specifically, to a parallel feeding device for preparing defoamers for oil and gas fields. Background Art

[0002] Defoamers for oil and gas fields are chemical agents specifically used to solve the foam problems generated during the exploitation and treatment of oil and gas fields. They are usually organosilicon polyether graft copolymer high-efficiency defoamers and may also contain components such as silicone grease, emulsifiers, waterproof agents, thickeners, etc. Defoamers are commonly used in processes such as oilfield drilling mud, mortar, oil refining, delayed coking, crude oil transportation, mining, ore dressing, etc., and can also be used in processes such as oil-water separation.

[0003] The defoamer penetrates into the foam system in the form of fine particles, destroys the elastic film of the bubbles, and inhibits the generation of foam. The surface tension of the defoamer itself is very low, which can gradually thin the film wall of the foam film containing the defoamer, and is strongly pulled by the film layer with a large surface tension around it, resulting in the rupture of the bubbles. During the preparation process of defoamers for oil and gas fields, foam appears due to factors such as the complexity of raw materials, the particularity of the preparation process, and chemical reactions. These foams come from active substances in raw materials, stirring and air mixing during the preparation process, and changes in temperature and air pressure, etc. In the prior art, since the mixing and heating of defoamer raw materials are usually achieved through a reaction kettle, and the reaction kettle has a decentralized material input pipeline, the material can be added into the kettle body at one time from the feed pipe, while the viscous material is continuously input through a vertical pipe with a second micropore. When supplying materials at one time, it will cause a variety of materials to accumulate together, resulting in poor dispersion of multiple groups of materials. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a parallel feeding device for preparing defoamers for oil and gas fields.

[0005] To solve the above problems, the present invention adopts the following technical solutions, which can realize the uniform feeding of different raw materials into the interior of the kettle body, avoid the phenomenon of accumulation of raw materials after being fed into the interior of the kettle body, and improve the dispersion of multiple groups of materials.

[0006] A parallel feeding device for preparing defoamers for oil and gas fields includes a kettle body and a top cover arranged at the upper end of the kettle body. A driving motor is arranged above the top cover, the output end of the driving motor is fixedly connected with a rotating rod, a first stirring blade is arranged at the lower part outside the rotating rod, and a feeding component is jointly arranged inside the kettle body and on the inner and outer sides of the top cover; The feeding component includes a first conveying pipe fixedly connected to the upper right side of the top cover and inclined, a second conveying pipe fixedly connected to the left side of the upper end of the top cover, guide slopes fixedly connected to both the left and right sides inside the top cover, a fixed cylinder fixedly connected between the left and right guide slopes, a plurality of blanking holes arranged in an annular array on the lower side of the fixed cylinder, a sleeve rotatably connected through the center inside the fixed cylinder, the sleeve sleeved outside the rotating rod, and a feeding wheel fixedly connected to the outside of the sleeve.

[0007] Further, both the first conveying pipe and the second conveying pipe penetrate the top cover, and both the first conveying pipe and the second conveying pipe are communicated with the kettle body. The left and right guide slopes are respectively located below the first conveying pipe and the second conveying pipe.

[0008] Further, the blades on the outside of the feeding wheel are arranged in an annular array, and the blades are arc-shaped. The blades on the outside of the feeding wheel extend to the inner wall of the fixed cylinder and are in sliding contact with the inner wall of the fixed cylinder.

[0009] Further, a stirring assembly is jointly provided inside the kettle body and on the inner and outer sides of the top cover. The stirring assembly includes a protective cylinder fixedly connected to the upper side of the top cover.

[0010] Further, a first bevel gear is arranged on the upper side inside the protective cylinder, a second bevel gear is arranged on the lower side inside the protective cylinder, a third bevel gear is rotatably connected to the right side inside the protective cylinder. The first bevel gear is fixedly connected to the outside of the rotating rod, the second bevel gear is fixedly connected to the outside of the sleeve, a positioning sleeve is sleeved on the outside of the rotating rod, the left side of the third bevel gear is rotatably connected inside the positioning sleeve, and a second stirring blade is fixedly connected to the lower part of the outside of the sleeve.

[0011] Further, both the first bevel gear and the second bevel gear are meshed on the outside of the third bevel gear. The rotating directions of the first stirring blade and the second stirring blade are opposite. The sleeve and the rotating rod penetrate the second bevel gear.

[0012] Further, a foam-breaking assembly is provided inside the kettle body. The foam-breaking assembly includes a movable ring slidably connected inside the kettle body.

[0013] Further, air bags are fixedly connected to both the front and rear sides of the lower end of the movable ring. The air bags are arc-shaped. A limiting rod is fixedly connected to the lower side of the guide slope. The movable ring is slidably sleeved on the outside of the limiting rod. A fixed ring is fixedly connected to the inner surface of the movable ring. A metal mesh 294 is fixedly connected inside the fixed ring. The metal mesh 294 is sleeved on the outside of the sleeve.

[0014] Further, a detection component is provided inside the kettle body. The detection component includes a laser rangefinder fixedly connected to the lower side of the guide slope.

[0015] Furthermore, a warning device is provided on the front side of the fixed cylinder, and both the warning device and the laser rangefinder are electrically connected to an external power supply.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) In the present invention, the feeding wheel is arranged to collect and discharge different raw materials during rotation, so that different raw materials are discharged into the kettle body through multiple blanking holes. Since different raw materials can be pre-scrambled in advance during the process of being fed into the kettle body, and after the different raw materials are mixed, they are evenly fed into the kettle body, effectively avoiding the phenomenon of accumulation of raw materials after being fed into the kettle body, improving the dispersibility of multiple groups of materials, and thus facilitating the subsequent processing of multiple groups of raw materials.

[0017] (2) In the present invention, the second bevel gear drives the sleeve and the second stirring blade on its outer side to rotate through the driving of the first bevel gear, so that the first stirring blade and the second stirring blade rotate alternately. Since the rotating rod drives the feeding wheel to convey the raw materials, the first stirring blade and the second stirring blade rotating in opposite directions will stir the raw materials during the falling process, increasing the dispersibility of multiple groups of materials again, and further improving the processing quality of multiple groups of raw materials subsequently.

[0018] (3) In the present invention, the metal mesh first contacts the foam on the liquid surface and breaks the foam. When foam appears during the mixing process of multiple groups of raw materials and liquid raw materials, the foam on the liquid surface will first contact the metal mesh 294 inside the fixed ring, and the structure of the foam will be destroyed through the physical barrier, making the foam easier to dissipate, and avoiding the adhesion of the raw materials during the conveying process to the surface of the foam and affecting the subsequent processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic cross-sectional structural diagram of the present invention; Figure 3 is a schematic structural diagram of the material guiding slope of the present invention; Figure 4 is a schematic cross-sectional structural diagram of the top cover of the present invention; Figure 5 is a schematic cross-sectional structural diagram of the fixed cylinder of the present invention; Figure 6 is a schematic cross-sectional structural diagram of the sleeve of the present invention; Figure 7 is a schematic cross-sectional structural diagram of the protective cylinder of the present invention; Figure 8 is a schematic structural diagram of the movable ring of the present invention.

[0020] Explanation of the reference numerals in the figures: 1. Kettle body; 11. Top cover; 12. Driving motor; 13. Rotating rod; 14. First stirring blade; 2. Feeding component; 21. First conveying pipe; 22. Second conveying pipe; 23. Material guiding slope; 24. Fixed cylinder; 25. Feeding hole; 26. Sleeve; 27. Feeding wheel; 28. Stirring component; 281. Protective cylinder; 282. First bevel gear; 283. Second bevel gear; 284. Second stirring blade; 285. Positioning sleeve; 286. Third bevel gear; 29. Foam breaking component; 291. Movable ring; 292. Airbag; 293. Fixed ring; 294. Metal mesh 294; 295. Limiting rod; 3. Detection component; 31. Laser rangefinder; 32. Warning device. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 to 8 , a parallel feeding device for preparing defoamer for oil and gas fields, including a kettle body 1 and a top cover 11 arranged at the upper end of the kettle body 1. A driving motor 12 is arranged above the top cover 11. The output end of the driving motor 12 is fixedly connected with a rotating rod 13. The lower part of the outer side of the rotating rod 13 is provided with a first stirring blade 14. The inside of the kettle body 1 and the inside and outside of the top cover 11 are jointly provided with a feeding component 2; The feeding component 2 includes a first conveying pipe 21 fixedly connected to the upper right side of the top cover 11 and arranged obliquely. The left side of the upper end of the top cover 11 is fixedly connected with a second conveying pipe 22. The left and right sides inside the top cover 11 are both fixedly connected with a material guiding slope 23. A fixed cylinder 24 is fixedly connected between the left and right material guiding slopes 23. The lower side of the fixed cylinder 24 is provided with feeding holes 25 arranged in an annular array. The center of the inside of the fixed cylinder 24 is penetrated and rotatably connected with a sleeve 26. The sleeve 26 is sleeved on the outer side of the rotating rod 13. The outer side of the sleeve 26 is fixedly connected with a feeding wheel 27.

[0023] Both the first conveying pipe 21 and the second conveying pipe 22 penetrate the top cover 11, and both the first conveying pipe 21 and the second conveying pipe 22 are communicated with the kettle body 1. The left and right material guiding slopes 23 are respectively located below the first conveying pipe 21 and the second conveying pipe 22.

[0024] The blades on the outer side of the feeding wheel 27 are arranged in an annular array, and the blades are arc-shaped. The blades on the outer side of the feeding wheel 27 extend to the inner wall of the fixed cylinder 24 and are in sliding contact with the inner wall of the fixed cylinder 24.

[0025] The inside of the kettle body 1 and the inside and outside of the top cover 11 are jointly provided with a stirring assembly 28.

[0026] By adopting the above technical solution, when transporting the raw materials of the defoaming agent, different raw materials are respectively filled into the inside of the kettle body 1 in batches from the first conveying pipe 21 and the second conveying pipe 22. Then, the driving motor 12 is started to drive the rotating rod 13 to rotate. At this time, the rotating rod 13 cooperates with the stirring assembly 28 to drive the rotating cylinder to rotate, so that the material conveying wheel 27 on the outer side of the rotating cylinder rotates inside the fixed cylinder 24. When the raw materials enter the inside of the first conveying pipe 21 and the second conveying pipe 22, different raw materials will respectively enter the two material guiding slopes 23, so that different raw materials jointly enter the inside of the fixed cylinder 24. During this process, because the material conveying wheel 27 will rotate inside the fixed cylinder 24 after the driving motor 12 runs, when different raw materials enter the inside of the fixed cylinder 24, they will fall on the outer side of the material conveying wheel 27 and be collected by the arc-shaped blades on the outer side of the material conveying wheel 27. As the material conveying wheel 27 rotates, different raw materials entering the inside of the fixed cylinder 24 synchronously will be mixed on the outer side of the material conveying wheel 27, and then slide to the positions of a plurality of blanking holes 25 opened below the fixed cylinder 24, and finally are discharged into the kettle body 1 through the plurality of blanking holes 25. The raw materials remaining inside the fixed cylinder 24 will also be scraped into the blanking holes 25 by the blades on the outer side of the material conveying wheel 27. Since different raw materials can be pre-shuffled first during the process of being fed into the kettle body 1, and after mixing different raw materials, they are evenly fed into the kettle body 1, effectively avoiding the phenomenon of raw materials piling up after being fed into the kettle body 1, so as to improve the dispersion of multiple groups of materials, and further facilitating the subsequent processing of multiple groups of raw materials.

[0027] As Figures 2 to 6 shown, the stirring assembly 28 includes a protective cylinder 281 fixedly connected to the upper side of the top cover 11.

[0028] On the upper side inside the protective cylinder 281, a first bevel gear 282 is arranged. On the lower side inside the protective cylinder 281, a second bevel gear 283 is arranged. On the right side inside the protective cylinder 281, a third bevel gear 286 is rotatably connected. The first bevel gear 282 is fixedly connected to the outer side of the rotating rod 13. The second bevel gear 283 is fixedly connected to the outer side of the sleeve 26. A positioning sleeve 285 is sleeved on the outer side of the rotating rod 13. The left side of the third bevel gear 286 is rotatably connected inside the positioning sleeve 285. The lower part of the outer side of the sleeve 26 is fixedly connected with a second stirring blade 284.

[0029] Both the first bevel gear 282 and the second bevel gear 283 are meshed on the outer side of the third bevel gear 286. The rotating directions of the first stirring blade 14 and the second stirring blade 284 are opposite. The sleeve 26 and the rotating rod 13 penetrate through the second bevel gear 283.

[0030] By adopting the above technical solution, during the process of the driving motor 12 driving the rotating rod 13 to rotate, the first bevel gear 282 on its outer side will be driven to rotate inside the protective cylinder 281. During this process, since the third bevel gear 286 rotates stably due to the limitation of the positioning sleeve 285, at the same time, the third bevel gear 286 meshes with the first bevel gear 282 and the second bevel gear 283 on the outer side of the sleeve 26. As the driving motor 12 drives the rotating rod 13 and the first stirring blade 14 fixed on the outer side of the rotating rod 13 to rotate, the first bevel gear 282 on the outer side of the rotating rod 13 will drive the third bevel gear 286 to rotate, and the third bevel gear 286 will drive the second bevel gear 283 to rotate, so that the second bevel gear 283 can drive the sleeve 26 and the second stirring blade 284 on the outer side of the sleeve 26 to rotate in the opposite direction. After different raw materials enter the kettle body 1, the first stirring blade 14 and the second stirring blade 284 with opposite rotation directions will stir the different raw materials during the falling process. After different raw materials accumulate inside the kettle body 1, the first stirring blade 14 and the second stirring blade 284 will also stir the different raw materials. Since the rotating rod 13 drives the material conveying wheel 27 to convey the raw materials, the first stirring blade 14 and the second stirring blade 284 with opposite rotation directions will stir the raw materials during the falling process, increasing the dispersion of multiple groups of materials again, and further improving the processing quality of multiple groups of raw materials subsequently.

[0031] As Figures 2 to 4 and Figure 7 and Figure 8 shown, a foam breaking assembly 29 is provided inside the kettle body 1, and the foam breaking assembly 29 includes a movable ring 291 slidably connected inside the kettle body 1.

[0032] Both the front and rear sides of the lower end of the movable ring 291 are fixedly connected with air bags 292. The air bags 292 are arc-shaped. A limiting rod 295 is fixedly connected to the lower side of the material guiding slope 23. The movable ring 291 is slidably sleeved on the outer side of the limiting rod 295. The inner surface of the movable ring 291 is fixedly connected with a fixed ring 293. A metal mesh 294 is fixedly connected inside the fixed ring 293. The metal mesh 294 is sleeved on the outer side of the sleeve 26.

[0033] By adopting the above technical solution, as the liquid raw material enters the kettle body 1, the air bag 292 under the movable ring 291 will move upward according to the rising water level of the liquid raw material after contacting the liquid raw material, and enter the kettle body 1 through the discharge hole 25. At this time, different raw materials will pass through the movable ring 291 and the fixed ring 293, and the metal mesh 294 inside the fixed ring 293 has a large gap, so that different raw materials can smoothly pass through the metal mesh 294 and accumulate inside the kettle body 1. In the process of mixing different raw materials with liquid raw materials, foam appears on the liquid surface and contacts the metal mesh 294, so that the foam dissipates. When foam appears in the process of mixing multiple groups of raw materials with liquid raw materials, the foam on the liquid surface will first contact the metal mesh 294 inside the fixed ring 293, and destroy the structure of the foam through the physical barrier, so that the foam is easier to dissipate, thereby avoiding the raw materials in the transportation process from adhering to the foam surface and affecting the subsequent processing quality.

[0034] like Figures 2 to 5 and Figure 7 and Figure 8 As shown, a detection component 3 is provided inside the kettle body 1 , and the detection component 3 includes a laser rangefinder 31 fixedly connected to the lower side of the material guiding slope 23 .

[0035] A warning device 32 is disposed on the front side of the fixed tube 24 . The warning device 32 and the laser rangefinder 31 are both electrically connected to an external power source.

[0036] By adopting the above technical solution, as the movable ring 291 moves upward due to the rising liquid level, the laser rangefinder 31 in the turned-on state will monitor the position of the movable ring 291 in real time, and feed back data to the alarm 32 in real time. When the movable ring 291 rises to the preset height of the alarm 32, the alarm 32 issues an alarm, and the staff stops supplying raw materials. Since the laser rangefinder 31 monitors the position of the movable ring 291 in real time, the position of the movable ring 291 can show the actual number of multiple groups of raw materials. When the multiple groups of raw materials supplied reach the preset number, the alarm 32 will promptly remind the staff.

[0037] Working principle: When different raw materials are filled into the inside of the kettle body 1 in batches through the first conveying pipe 21 and the second conveying pipe 22 respectively, start the driving motor 12 to drive the rotating rod 13 to rotate, and cooperate with the stirring assembly 28 to drive the rotating cylinder to rotate, so that the material conveying wheel 27 on the outer side of the rotating cylinder rotates inside the fixed cylinder 24. As the raw materials enter the guiding slope 23 through the first conveying pipe 21 and the second conveying pipe 22, they will slide into the inside of the fixed cylinder 24 and fall outside the material conveying wheel 27. While the material conveying wheel 27 rotates, different raw materials will be mixed outside the material conveying wheel 27 and finally discharged into the kettle body 1 through a plurality of blanking holes 25. When the driving motor 12 drives the rotating rod 13 and the first stirring blade 14 fixed on the outer side of the rotating rod 13 to rotate, the second stirring blade 284 on the outer side of the sleeve 26 rotates in the opposite direction. At this time, the first stirring blade 14 and the second stirring blade 284 will stir the different raw materials during the falling process. After different raw materials accumulate inside the kettle body 1, the first stirring blade 14 and the second stirring blade 284 will also stir the different raw materials. When the liquid raw material enters the kettle body 1, the air bag 292 below the movable ring 291 will move upward according to the rising water level of the liquid raw material after contacting the liquid raw material. During the mixing process of different raw materials and the liquid raw material, the foam on the liquid surface contacts the metal mesh 294, causing the foam to dissipate. The laser rangefinder 31 in the open state will monitor the position of the movable ring 291 in real time and feedback the data to the warning device 32 in real time. When the movable ring 291 rises to the preset height of the warning device 32, the warning device 32 issues a warning, and the staff stops supplying the raw materials.

[0038] The above is only the preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A parallel feeding device for preparing an antifoaming agent for oil and gas fields, comprising a kettle body (1) and a top cover (11) arranged at the upper end of the kettle body (1). A driving motor (12) is arranged above the top cover (11). The output end of the driving motor (12) is fixedly connected with a rotating rod (13). A first stirring blade (14) is arranged at the lower part of the outer side of the rotating rod (13), and it is characterized in that: The inside of the kettle body (1) and the inner and outer sides of the top cover (11) are jointly provided with a feeding component (2). The feeding component (2) includes a first conveying pipe (21) which is fixedly connected to the upper right side of the top cover (11) and is inclined, a second conveying pipe (22) is fixedly connected to the left side of the upper end of the top cover (11), guide slopes (23) are fixedly connected to both the left and right sides inside the top cover (11), a fixed cylinder (24) is fixedly connected between the left and right guide slopes (23), blanking holes (25) are arranged in a circular array on the lower side of the fixed cylinder (24), a sleeve (26) is rotatably connected through the center inside the fixed cylinder (24), the sleeve (26) is sleeved on the outside of the rotating rod (13), and a feeding wheel (27) is fixedly connected to the outside of the sleeve (26).

2. The parallel feeding device for preparing defoamer for oil and gas fields according to claim 1, characterized in that: Both the first conveying pipe (21) and the second conveying pipe (22) penetrate through the top cover (11), and both the first conveying pipe (21) and the second conveying pipe (22) are communicated with the kettle body (1), and the left and right guide slopes (23) are respectively located below the first conveying pipe (21) and the second conveying pipe (22).

3. A parallel feeding device for preparing an antifoaming agent for oil and gas fields according to claim 1, characterized in that: The blades on the outside of the feeding wheel (27) are arranged in a circular array, and the blades are arc-shaped. The blades on the outside of the feeding wheel (27) extend to the inner wall of the fixed cylinder (24) and are in sliding contact with the inner wall of the fixed cylinder (24).

4. A parallel feeding device for preparing an antifoaming agent for oil and gas fields according to claim 1, characterized in that: A stirring assembly (28) is jointly provided inside the kettle body (1) and on the inner and outer sides of the top cover (11). The stirring assembly (28) includes a protective cylinder (281) fixedly connected to the upper side of the top cover (11).

5. A parallel feeding device for preparing an antifoaming agent for oil and gas fields according to claim 4, characterized in that: A first bevel gear (282) is arranged on the upper side inside the protective cylinder (281), a second bevel gear (283) is arranged on the lower side inside the protective cylinder (281), a third bevel gear (286) is rotatably connected to the right side inside the protective cylinder (281), the first bevel gear (282) is fixedly connected to the outside of the rotating rod (13), the second bevel gear (283) is fixedly connected to the outside of the sleeve (26), a positioning sleeve (285) is sleeved on the outside of the rotating rod (13), the left side of the third bevel gear (286) is rotatably connected inside the positioning sleeve (285), and a second stirring blade (284) is fixedly connected to the lower part on the outside of the sleeve (26).

6. The parallel feeding device for preparing an antifoaming agent for oil and gas fields according to claim 5, wherein: Both the first bevel gear (282) and the second bevel gear (283) are engaged on the outside of the third bevel gear (286), the rotating directions of the first stirring blade (14) and the second stirring blade (284) are opposite, and the sleeve (26) and the rotating rod (13) penetrate through the second bevel gear (283).

7. A parallel feeding device for preparing an antifoaming agent for oil and gas fields according to claim 1, characterized in that: A foam-breaking assembly (29) is arranged inside the kettle body (1). The foam-breaking assembly (29) includes a movable ring (291) slidably connected inside the kettle body (1).

8. A parallel feeding device for preparing an antifoaming agent for oil and gas fields according to claim 7, characterized in that: Both the front and rear sides of the lower end of the movable ring (291) are fixedly connected with air bags (292). The air bags (292) are arc-shaped. A limiting rod (295) is fixedly connected to the lower side of the material guiding slope (23). The movable ring (291) is slidably sleeved on the outer side of the limiting rod (295). A fixed ring (293) is fixedly connected to the inner surface of the movable ring (291). A metal mesh (294) is fixedly connected to the inside of the fixed ring (293). The metal mesh (294) is sleeved on the outer side of the sleeve (26).

9. The parallel feeding device for preparing an antifoaming agent for oil and gas fields according to claim 1, characterized in that: A detection component (3) is arranged inside the kettle body (1). The detection component (3) includes a laser rangefinder (31) fixedly connected to the lower side of the material guiding slope (23).

10. A parallel feeding device for preparing an antifoaming agent for oil and gas fields according to claim 9, characterized in that: A warning device (32) is arranged on the front side of the fixed cylinder (24). Both the warning device (32) and the laser rangefinder (31) are electrically connected to an external power supply.

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