CN216072164U - Oil field polymer injection dry powder feeding device - Google Patents

Abstract

The utility model provides an oilfield polymer injection dry powder feeding device which comprises a machine body support and a guide rail, wherein the guide rail extends along the left-right direction, the right end of the guide rail is fixed at the top of the machine body support, and the oilfield polymer injection dry powder feeding device also comprises a support frame which is fixedly connected with the left end of the guide rail and used for supporting the guide rail. Install the feed bin on the organism support, the left side of feed bin is provided with the door that supplies the material package to advance out of the feed bin, installs hoisting accessory on the guide rail, and hoisting accessory carries out the broken bag and the unloading process of material package in with the material package hoist to the feed bin. When the oilfield polymer injection dry powder feeding device is used, the left end of the guide rail is supported by the support frame, and the left end of the guide rail is prevented from being suspended, so that when the lifting device lifts and transports a material bag, the risk of the whole side turning of the machine body support is greatly reduced, the use safety of the feeding device is improved, a plurality of material bags can be discharged below the guide rail at the same time, and the material bag transferring efficiency is improved.

Description

Oil field polymer injection dry powder feeding device

Technical Field

The utility model relates to the technical field of oilfield ground equipment, in particular to an oilfield polymer injection dry powder feeding device.

Background

In the later stage of oil field development, polymer flooding is generally used to increase the viscosity of water injection, improve the formation permeability and increase the crude oil yield. The polymer oil displacement method is that water and polymer injection dry powder are firstly processed through a series of technological processes to prepare polymer solution, and then the polymer solution is injected into stratum to displace oil. At present, one of the commonly used polymer injection dry powder feeding devices is an air blower which is used for conveying polymer injection dry powder through certain air pressure and flow, and the other is a helical spring type conveying pump which is used for conveying the polymer injection dry powder. The two devices need to manually carry the material bags and manually remove the bags, so that time and labor are wasted, and the feeding space is not a closed space, so that dust pollution is easily caused.

In order to solve the problems, the Chinese utility model patent with the publication number of CN205770539U discloses a multifunctional big bag unpacking machine, which comprises a machine body support, wherein a dustproof box (namely a bin) is installed on the machine body support, a horizontal cantilever (namely a guide rail) is arranged at the top of the bin, an electric hoist is installed on the guide rail, and a material bag is hoisted into the bin through the electric hoist to be unpacked; the top of feed bin is provided with the upper portion opening that supplies hoist and mount rope business turn over, and sealing door is installed to the upper portion opening part, and the side of feed bin is provided with the opening that supplies the material package business turn over, and the opening part is equipped with the chamber door, and the feed bin below is provided with broken bagging apparatus for automatic bag tearing, the lower part of feed bin still is connected with the hopper.

The bag breaker in the above-mentioned patent accomplishes the automatic transportation of material package through guide rail and electric block with organism support connection, and guide rail one end is fixed on organism support, and the other end is unsettled, and when the material package was heavier, whole organism support had the higher risk of turning on one's side, can't guarantee the security that the material package was transported.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an oilfield polymer injection dry powder feeding device with high safety.

In order to realize the purpose, the oil field polymer injection dry powder feeding device adopts the following technical scheme:

the utility model provides an oil field is annotated and is gathered dry powder feeding device, includes the organism support and follows the guide rail that left right direction extends, and the right-hand member of guide rail is fixed at the top of organism support, installs the hoisting accessory who is used for the hoist and transport material package on the guide rail, is fixed with the feed bin on the organism support, and the left side of feed bin is provided with the door that supplies the material package to advance out the feed bin, and the left end fixedly connected with of guide rail is used for supporting guide rail's support frame.

The beneficial effects of the above technical scheme are that: the oil field is annotated and is gathered dry powder feeding device includes organism support and guide rail, the guide rail extends along left right direction, the right-hand member of guide rail is fixed on the organism support, oil field is annotated and is gathered dry powder feeding device still includes the support frame, the support frame is used for supporting the left end of guide rail, it is unsettled to avoid the left end of guide rail, when hoisting accessory hoists the material package like this, the whole risk of turning on one's side of organism support has been reduced greatly, feeding device's safety in utilization has been improved, and then the guide rail below can discharge many bags of material package simultaneously, material package transfer efficiency has been improved.

Further, the bottom in the feed bin is provided with broken bagging apparatus, and broken bagging apparatus includes the broken bag blade that two at least slopes set up, and the top of each broken bag blade links firmly forms broken bag point up, and broken bag point is used for pricking broken material package.

The beneficial effects of the above technical scheme are that: the bag breaking device is arranged at the bottom in the storage bin, so that the material bag entering the storage bin is automatically broken, and time and labor are saved; the bag breaking device comprises at least two bag breaking blades which are obliquely arranged, the top of each bag breaking blade is fixedly connected with an upward bag breaking point, the bag breaking points are used for pricking broken material bags, and the bag breaking device is simple in structure and easy to process.

Further, the side wall of the bin, which is positioned outside the bag breaking device, is an inclined wall which is obliquely arranged.

The beneficial effects of the above technical scheme are that: the lateral wall that is located bag breaking device outside of feed bin is the communications tilt wall that the slope set up, and the notes gathers dry powder and removes along the communications tilt wall and assemble after conveniently breaking the bag.

Furthermore, an observation hole is formed in the side wall of the storage bin.

The beneficial effects of the above technical scheme are that: be provided with the observation hole on the lateral wall of feed bin, make things convenient for operating personnel to observe the unloading state, master the production beat.

Further, the lower part of the stock bin is connected with a blanking hopper, and a filter screen is arranged between the bottom of the stock bin and the blanking hopper.

The beneficial effects of the above technical scheme are that: the bottom of the storage bin is connected with a discharging hopper, so that discharging is facilitated; through the filter screen that sets up between feed bin bottom and the lower hopper, filter annotating the poly dry powder, get rid of impurity, improve the purity of annotating the poly dry powder.

Further, the bottom of the storage bin is provided with a cleaning opening for cleaning the filter screen.

The beneficial effects of the above technical scheme are that: the feed bin bottom is provided with the clearance mouth that is used for clearing up the filter screen, conveniently cleans the filter screen.

Furthermore, the oil field polymer injection dry powder feeding device further comprises a flat gate connected to the bottom of the discharging hopper and a pipe chain conveyor connected with the flat gate.

The beneficial effects of the above technical scheme are that: the bottom of the blanking hopper is provided with a flat gate, so that the blanking amount of the polymer injection dry powder can be conveniently controlled; the oil field polymer injection dry powder feeding device further comprises a pipe chain conveyor, the pipe chain conveyor conveys polymer injection dry powder, and the pipe chain conveyor has the advantages of compact structure, small occupied space and capability of changing the conveying direction in a three-dimensional mode.

Further, the storage bin comprises a front side wall, a rear side wall and a right side wall which are vertically arranged; the oil field polymer injection dry powder feeding device further comprises an air bag fixed at the top of the machine body support and two blowing pipes communicated with the air bag, the two blowing pipes are fixedly attached to the front side wall and the rear side wall of the storage bin respectively, and the blowing holes blowing towards the left side and the right side are formed in the blowing pipes respectively.

The beneficial effects of the above technical scheme are that: the air bag is arranged to provide an air source for the purging pipe; two sweep the pipe and establish fixedly with the preceding lateral wall of feed bin and back lateral wall subsides respectively, sweep and be equipped with the hole of blowing towards the left and right sides on the pipe respectively, through blowing, clear away the material that remains on the interior wall of feed bin, guarantee the cleanness of feed bin.

Further, the hoisting device comprises a hoisting rope for hoisting the material bag; the feed bin includes the roof, is provided with the groove of dodging that is used for dodging the lifting rope on the roof.

The beneficial effects of the above technical scheme are that: the feed bin includes the roof, has improved the space seal nature of feed bin, the dust polluted air that produces when avoiding the material package broken bag.

Furthermore, a dust removal hole used for being connected with a dust collector is arranged on the storage bin.

The beneficial effects of the above technical scheme are that: the dust floating in the storage bin is absorbed through the dust removing hole and the dust collector, so that the dust pollution is avoided.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment 1 of an oilfield polymer injection dry powder feeding device according to the present invention;

FIG. 2 is a partial enlarged view of an embodiment 1 of the oilfield polymer injection dry powder feeding device according to the present invention;

fig. 3 is an internal structure view of a pipe chain conveyor in embodiment 1 of the oilfield polymer injection dry powder feeding device of the utility model.

In the figure: 1. a body support; 1-1, square bracket; 1-2, rectangular steel plates; 1-3, bolts; 2. a support frame; 3. a material bag; 4. an electric hoist; 5. a guide rail; 6. a storage bin; 6-1, a bin gate; 6-2, an inclined wall; 7. a bag breaking device; 8. feeding a hopper; 9. filtering with a screen; 10. a flat plate gate; 11. a pipe chain conveyor; 11-1, a motor; 11-2, a chain; 11-3, a feed inlet; 11-4, a discharge hole; 11-5, a chain pipe; 11-6, a chain wheel; 12. air bags; 13. a purge tube; 14. an observation hole; 15. a dust removal hole; 16. and cleaning the opening.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

An embodiment 1 of the oilfield polymer injection dry powder feeding device (hereinafter referred to as a feeding device) of the present invention is shown in fig. 1, and includes a machine body support 1, the machine body support 1 is fixed on the ground, the machine body support 1 includes a square support 1-1 disposed on the top of the machine body support 1, the square support 1-1 includes two connecting beams (not shown in the figure) respectively disposed on the left and right sides of the top of the square support 1-1, and the connecting beams extend in the front-rear direction. As shown in FIG. 2, rectangular steel plates 1-2 are respectively arranged on the upper side and the lower side of the middle position of the two connecting beams, and the rectangular steel plates 1-2 on the upper side and the lower side are connected through bolts 1-3. The feeding device further comprises a guide rail 5, the guide rail 5 is of an I-shaped steel structure and extends along the left-right direction, and the upper wing surface at the right end of the guide rail 5 is fixedly welded with the rectangular steel plate 1-2 on the lower side of the connecting beam, so that the guide rail 5 is fixed on the machine body support 1.

The feeding device further comprises a support frame 2, in embodiment 1, the support frame 2 is a vertically-arranged support with a triangular cross section, the bottom end of the support frame 2 is fixed on the ground, and a fixing plate is welded at the top end. The fixed plate has also been welded to the left end bottom of guide rail 5, and the fixed plate on 2 tops of support frame passes through bolted connection with the fixed plate of 5 left end bottoms of guide rail, and then realizes being connected of support frame 2 and guide rail 5, makes support frame 2 support the left end of guide rail 5.

Install hoisting accessory on the guide rail 5, hoisting accessory is used for the hoist and transport material package 3, and in this embodiment, hoisting accessory includes electric block 4, but electric block 4 wireless remote control, and electric block 4 comes hoist and transport material package 3 through lifting rope and the couple of connection on the lifting rope, labour saving and time saving.

Feeding device still includes feed bin 6, and feed bin 6 is installed on organism support 1, and at reinforced in-process, electric block 4 hangs material package 3 to a take the altitude, then steadily transports to feed bin 6 in, accomplishes the broken bag and the unloading process of material package 3 in feed bin 6. Specifically, the bin 6 comprises a front side wall, a rear side wall and a right side wall which are vertically arranged, and the front side wall, the rear side wall and the right side wall are located below the square support 1-1. The left side of the bin 6 is provided with a bin door 6-1 for the material bags 3 to enter and exit the bin 6, and in the embodiment, the bin door 6-1 comprises two split pneumatic doors. The pneumatic door is opened when the material package 3 advances out feed bin 6, closes before the material package 3 transfers, at the broken bag of material package 3 and unloading in-process, and the pneumatic door is in the closed condition all the time, avoids the dust polluted air of production. In order to improve the sealing performance, the pneumatic door is provided with a sealing strip.

In order to further improve the space tightness of the storage bin 6, the storage bin 6 further comprises a top wall (not shown in the figure), wherein an avoiding groove (not shown in the figure) for avoiding the lifting rope is arranged on the top wall, and the avoiding groove is of a U-shaped structure with an opening facing the left. The roof top still is provided with two closing plates (not shown in the figure) that are used for sealed groove of dodging, and the right-hand member of two closing plates articulates together and is connected with the roof, and the left end of two closing plates can open and shut, forms the scissors structure, and two closing plates are respectively through cylinder drive. When material package 3 got into feed bin 6, the air door was opened, and two closing plates were also opened simultaneously to make the lifting rope pass through, when the air door was closed, two closing plates were also closed simultaneously, sealed dodging the groove, still are provided with the arc opening on two closing plates, and when two closing plates were closed, two arc openings formed the round hole, were used for making the lifting rope pass, and this partial structure and principle belong to prior art, and the ton bag that specifically can refer to in patent document CN204896027U is torn the bag machine and is used seal structure.

In addition, in order to realize automatic broken bag function, the bottom in the feed bin 6 is provided with broken bagging apparatus 7, broken bagging apparatus 7 includes the broken bag blade that four slopes set up, broken bag blade along circumference equipartition, the top of four broken bag blades links firmly and forms the broken bag point up, broken bag point is used for pricking broken material package 3, when the material package is transferred to broken bag point on, the material package is pricked by broken bag point 3 under the effect of self gravity, realizes automatic broken bag. In order to facilitate gathering of the polymer injection dry powder after bag breaking, the side walls of the bin 6, which are located outside the bag breaking device 7, are four inclined walls 6-2 which are obliquely arranged, the inclined walls on the front side, the rear side and the right side are respectively connected with the bottom ends of the front side wall, the rear side wall and the right side wall, the lower end of the bag breaking blade is installed on the inclined walls 6-2, and after bag breaking, the polymer injection dry powder moves along the inclined walls 6-2 to be gathered.

In order to facilitate discharging, a discharging hopper 8 is arranged at the lower part of the storage bin 6, the discharging hopper 8 is of a conical structure, and the top end of the discharging hopper 8 is fixedly connected with the bottom end of the inclined wall 6-2. In order to filter the polymer injection dry powder, a filter screen 9 is arranged between the bottom of the stock bin 6 and the discharging hopper 8, and the polymer injection dry powder after breaking the bag flows into the discharging hopper 8 after being filtered by the filter screen 9. In order to facilitate the observation of the blanking state by an operator and grasp the production rhythm, the front side wall of the bin 6 is provided with an observation hole 14, and the observation hole 14 is provided with organic transparent glass. In order to facilitate cleaning of the filter screen 9 by an operator, the rear inclined wall 6-2 is provided with a cleaning opening 16, and the cleaning opening 16 is provided with a door which is opened only when the filter screen 9 is cleaned.

In addition, in order to facilitate discharging, the polymer injection dry powder is conveyed to a storage unit, the feeding device further comprises a pipe chain conveyor 11, the pipe chain conveyor 11 belongs to the existing product, as shown in fig. 1 and 3, the pipe chain conveyor 11 is in an inclined vertical state and comprises a feed inlet 11-3, a discharge outlet 11-4, a motor 11-1, a speed reducer, a chain wheel 11-2, a chain 11-6, a circular scraper (not shown in the figure) and a chain pipe 11-5, the feed inlet 11-3 is arranged at the lowest position of the whole pipe chain conveyor and is connected with the bottom end of a discharge hopper 8, the discharge outlet 11-4 is connected with the storage unit, and the discharge outlet 11-4 is detachable, so that the chain 11-6 can be conveniently overhauled, and the chain 11-6 and the scraper can be replaced. The motor 11-1 is a variable frequency motor, and when the pipe chain conveyor is used, the motor 11-1 is firstly adjusted to a proper rotating speed, and then the pipe chain conveyor 11 is started. When the device works, the motor 11-1 drives the speed reducer to rotate, and then drives the chain wheel 11-2 to rotate, so that the chain 11-6 and the circular scraping blade do annular motion in the chain pipe 11-5, the polymer injection dry powder is conveyed to the discharge hole 11-4 from the feed inlet 11-3 and then enters the material storage unit, and the feeding process of the polymer injection dry powder is completed.

In order to control the blanking amount conveniently, a flat gate 10 is arranged between the feeding hole 11-3 and the blanking hopper 8. The flat gate 10 is opened after the operation of the pipe chain conveyor 11 and closed after the operation of the pipe chain conveyor 11 is stopped, so that the pipe chain conveyor 11 is started at a low load.

In order to clean the residual polymer-injected dry powder on the inner wall of the storage bin 6, the feeding device further comprises an air bag 12 and a purging pipe 13 communicated with the air bag 12, the air bag 12 is fixedly installed on the square support 1-1, the air bag 12 is supplied with air by an air compressor, and an air valve (not shown in the figure) is arranged in the air bag 12. The number of the purging pipes 13 is two, the two purging pipes 13 are respectively attached and fixed to the front side wall and the rear side wall of the storage bin 6, and the purging pipes 13 are respectively provided with blowing holes for blowing air towards the left side and the right side. In order to clean the dust floating in the air, a dust removing hole 15 is arranged on the right side wall of the storage bin 6, and the dust removing hole 15 is connected with a dust collector through a dust removing channel. After the feeding is finished, the air valve is opened, air passes through the air blowing hole of the blowing pipe 13 to clean dust on the inner wall of the storage bin 6, and floating dust flows into the dust collector through the dust removing hole 15 under the action of negative pressure.

In order to facilitate the operation, the feeding device further comprises a control box, the control box is fixedly installed on one side of the storage bin (not shown in the figure), a button used for controlling the action of the electric hoist, the air compressor, the air valve, the dust collector power supply, the pneumatic door, the air cylinder and the pipe chain conveyor 11 is arranged in the control box, and a frequency conversion system is further arranged in the control box and can adjust the speed of the motor 11-1.

When the feeding device is used, the left end of the guide rail is supported by the support frame, and the left end of the guide rail is prevented from being suspended, so that when the lifting device lifts and transports material bags, the risk of integral side turning of the machine body support is greatly reduced, the use safety of the feeding device is improved, and then the material bags with multiple bags can be discharged below the guide rail at the same time, and the material bag transferring efficiency is improved.

Embodiment 2 of the oil field polymer injection dry powder feeding device of the utility model: unlike example 1, the silo was not provided with dust removal holes.

Embodiment 3 of the oil field polymer injection dry powder feeding device of the present invention: unlike embodiment 1, the silo is not provided with a top wall, and the top of the silo is directly communicated with the external space.

Embodiment 4 of the oil field polymer injection dry powder feeding device of the present invention: unlike example 1, the oilfield polymer injection dry powder feeding device does not include a gas bag and a purge tube.

Embodiment 5 of the oil field polymer injection dry powder feeding device of the present invention: different from the embodiment 1, the storage bin does not comprise a front side wall, a rear side wall and a right side wall, namely the storage bin is not square but cylindrical, a notch is reserved on the cylindrical side wall to install the bin door, and the bin door can be arc-shaped to form a smooth transition surface.

Embodiment 6 of the oil field polymer injection dry powder feeding device of the present invention: different from the embodiment 1, the oilfield polymer injection dry powder feeding device does not comprise a flat gate and a pipe chain conveyor, but directly connects the bottom end of the discharging hopper with a conveying pipeline, and conveys polymer injection dry powder to a storage unit through an air blower.

Embodiment 7 of the oil field polymer injection dry powder feeding device of the present invention: different from the embodiment 1, the bottom of the bin is not provided with a cleaning port, and the filter screen is cleaned by opening the bin door of the bin.

Embodiment 8 of the oil field polymer injection dry powder feeding device of the present invention: different from the embodiment 1, no filter screen is arranged between the bottom of the storage bin and the discharging hopper.

Embodiment 9 of the oil field polymer injection dry powder feeding device of the present invention: unlike example 1, the lower part of the silo is not provided with a discharge hopper, but the bottom of the silo is directly connected with a transport pipe.

Embodiment 10 of the oilfield polymer injection dry powder feeding device of the present invention: unlike example 1, no observation hole was provided on the side wall of the silo.

Embodiment 11 of the oil field polymer injection dry powder feeding device of the present invention: in contrast to example 1, the side wall of the silo outside the bag breaking device is a vertical wall.

Embodiment 12 of the oilfield polymer injection dry powder feeding device of the present invention: in contrast to example 1, the bag breaking device comprises two, three, five or more bag breaking blades.

Embodiment 13 of the oilfield polymer injection dry powder feeding device of the present invention: different from the embodiment 1, the bin is not internally provided with a bag breaking device, but the side wall of the bin is provided with a bag opening, and an operator can open the bag of the material bag through the bag opening.

Embodiment 14 of the oilfield polymer injection dry powder feeding device of the present invention: unlike embodiment 1, the lifting device is not an electric hoist, but a small crane driven hydraulically or pneumatically.

Embodiment 15 of the oil field polymer injection dry powder feeding device of the present invention: unlike embodiment 1, the support frame is not a triangular bracket but a pillar extending in the up-down direction.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims (10)

1. The utility model provides an oil field is annotated and is gathered dry powder feeding device, guide rail (5) that extend including organism support (1) and along controlling the direction, the top in organism support (1) is fixed to the right-hand member of guide rail (5), install the hoisting accessory who is used for lifting material package (3) on guide rail (5), be fixed with feed bin (6) on organism support (1), the left side of feed bin (6) is provided with bin gate (6-1) that supplies material package (3) to advance out feed bin (6), a serial communication port, the left end fixedly connected with of guide rail (5) is used for supporting support frame (2) of guide rail (5).

2. The oilfield polymer injection dry powder feeding device according to claim 1, wherein a bag breaking device (7) is arranged at the bottom inside the bin (6), the bag breaking device (7) comprises at least two obliquely arranged bag breaking blades, the tops of the bag breaking blades are fixedly connected to form an upward bag breaking tip, and the bag breaking tip is used for pricking a broken material bag (3).

3. The oilfield polymer injection dry powder feeding device according to claim 2, wherein the side wall of the storage bin (6) located outside the bag breaking device (7) is an inclined wall (6-2) which is arranged obliquely.

4. The oilfield polymer injection dry powder feeding device according to any one of claims 1 to 3, wherein the side wall of the storage bin (6) is provided with a viewing hole (14).

5. The oilfield polymer injection dry powder feeding device according to any one of claims 1 to 3, wherein a lower hopper (8) is connected to the lower part of the storage bin (6), and a filter screen (9) is arranged between the bottom of the storage bin (6) and the lower hopper (8).

6. The oilfield polymer injection dry powder feeding device according to claim 5, wherein a cleaning port (16) for cleaning the filter screen (9) is arranged at the bottom of the storage bin (6).

7. The oilfield polymer injection dry powder feeding device according to claim 5, further comprising a flat gate (10) connected to the bottom of the blanking hopper (8) and a pipe chain conveyor (11) connected to the flat gate (10).

8. The oilfield polymer injection dry powder feeding device according to any one of claims 1 to 3, wherein the storage bin (6) comprises a front side wall, a rear side wall and a right side wall which are vertically arranged; the oil field polymer injection dry powder feeding device further comprises an air bag (12) fixed to the top of the machine body support (1) and two blowing pipes (13) communicated with the air bag (12), the two blowing pipes (13) are fixedly attached to the front side wall and the rear side wall of the storage bin (6), and blowing holes for blowing air towards the left side and the right side are formed in the blowing pipes (13).

9. The oilfield polymer injection dry powder feeding device according to any one of claims 1 to 3, wherein the hoisting device comprises a hoisting rope for hoisting the material bag (3); the storage bin (6) comprises a top wall, and an avoiding groove for avoiding the lifting rope is formed in the top wall.

10. The oilfield polymer injection dry powder feeding device according to any one of claims 1 to 3, wherein the storage bin (6) is provided with a dust removal hole (15) for connecting with a dust collector.

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