CN111804420B - Grinder, proppant hybrid system based on polyacrylamide powder - Google Patents
Grinder, proppant hybrid system based on polyacrylamide powder Download PDFInfo
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- CN111804420B CN111804420B CN202010716472.2A CN202010716472A CN111804420B CN 111804420 B CN111804420 B CN 111804420B CN 202010716472 A CN202010716472 A CN 202010716472A CN 111804420 B CN111804420 B CN 111804420B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/02—Feeding devices
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Abstract
The invention discloses a polyacrylamide grinding device based on circulating airflow, which comprises an air inlet pipe, a polyacrylamide grinding machine, an air outlet pipe, a cyclone dust removal device, a discharge pipe and a circulating pipe, wherein the air inlet pipe, the polyacrylamide grinding machine, the air outlet pipe, the cyclone dust removal device, the discharge pipe and the circulating pipe are sequentially communicated to form a loop; the feeding device is arranged at a feeding port of the polyacrylamide grinder body; the feeding device comprises a feeding channel, a storage grooved wheel, a sealing plate and a linkage mechanism; the storage sheave is limited in the inner cavity of the feeding channel and is rotationally connected with the feeding channel, and the sealing plate is in sliding fit with the top of the feeding channel; the linkage mechanism is used for driving the storage sheave and the sealing plate to be linked, the storage sheave rotates until the open slot faces downwards to enable the sealing plate to slide to the top of the closed feeding channel, and the storage sheave rotates until the open slot faces upwards to enable the sealing plate to slide to the top opening of the feeding channel. The invention also discloses a proppant mixing system based on the polyacrylamide powder. The invention has the advantages of reducing the water content of polyacrylamide, reducing raw material waste and facilitating charging.
Description
Technical Field
The invention relates to the technical field of polyacrylamide, in particular to a grinding device and a proppant mixing system based on polyacrylamide powder.
Background
The petroleum proppant is also called petroleum fracturing proppant. When the petroleum and natural gas deep well is exploited, after high-closure-pressure low-permeability ore deposit is subjected to fracturing treatment, the petroleum-gas-containing rock stratum is cracked, the petroleum and gas are collected from a channel formed by the cracks, at the moment, fluid is required to be injected into the rock base layer so as to exceed the pressure of the fracture strength of the stratum, the rock stratum around the shaft is cracked, a channel with high laminar flow capacity is formed, and in order to keep the crack formed after fracturing open, the petroleum and gas products can smoothly pass through the channel.
Petroleum proppant such as the liquid-solid integrated petroleum proppant disclosed in patent application 201610492751.9, which is a particle coated with a water-swellable polymeric coating, wherein the water-swellable polymeric coating is composed of the following components in parts by weight: 50% by weight of the total polymer: polyacrylamide; 25% by weight of the total polymeric binder: a phenolic resin; 25% by total weight of cationic polymer: cationic modified starch and cationic polyacrylamide; the particles are 20-50 meshes of ceramsite particles and quartz sand, and the weight ratio of the ceramsite particles to the quartz sand to the polymer coating is 25: 1.
The main components of the petroleum proppant comprise polyacrylamide powder, quartz sand, solvent water and the like, and because the polyacrylamide has high hygroscopicity, a traditional mixing device such as the mixing device disclosed in patent application 201820781616.0 for producing the petroleum fracturing proppant is adopted to directly mix a large amount of polyacrylamide and water, and the polyacrylamide has high moisture absorption capacity, so that local agglomeration is caused or the viscosity of the solution is too high, and subsequent mixing is influenced.
In addition, because the polyacrylamide powder has strong hygroscopicity, if fresh air is adopted to blow the ground polyacrylamide powder every time, the water content of the ground polyacrylamide powder in each batch is large; and the blown air contains a certain amount of polyacrylamide powder, which is directly discharged, pollutes the environment and causes waste of raw materials.
The polyacrylamide grinder in the prior art has the technical problem of troublesome operation because the feeding is troublesome when the dust prevention is considered, and the operations of manual measurement, feeding, cover sealing and the like are required.
Disclosure of Invention
The invention provides a polyacrylamide grinding device based on circulating air flow, aiming at the technical problems that the polyacrylamide grinding device in the prior art has large water content of polyacrylamide powder after grinding in each batch and the blown air contains polyacrylamide powder, so that raw materials are wasted and feeding is troublesome.
The invention provides a propping agent mixing system based on polyacrylamide powder, aiming at the technical problems that the subsequent mixing of polyacrylamide powder and a large amount of water in the prior art is influenced by overlarge viscosity caused by direct mixing of polyacrylamide powder and a large amount of water.
The invention solves one of the technical problems by the following technical means: a polyacrylamide grinding device based on circulating airflow comprises a polyacrylamide grinding machine, a cyclone dust removal device, an air extraction pump, an air inlet pipe, a discharge pipe, an air outlet pipe, a circulating pipe and a valve;
the gas outlet end of the gas inlet pipe is communicated with the gas inlet of the polyacrylamide grinding machine, and two ends of the discharge pipe are respectively communicated with the discharge hole of the polyacrylamide grinding machine and the feed inlet of the cyclone dust removal device; two ends of the air outlet pipe are respectively communicated with an air outlet of the cyclone dust removal device and an air inlet end of the circulating pipe, and an air outlet end of the circulating pipe is communicated with an air inlet end of the air inlet pipe; the circulating pipe and the air inlet pipe are both provided with the air extraction pump and the valve;
the polyacrylamide grinder comprises a polyacrylamide grinder body and a feeding device, wherein the feeding device is arranged at a feeding port of the polyacrylamide grinder body;
the feeding device comprises a feeding channel, a storage grooved wheel, a sealing plate and a linkage mechanism; the feeding channel is communicated up and down, and the bottom of the feeding channel is communicated with a feeding hole of the polyacrylamide grinder body; the storage sheave is limited in the inner cavity of the feeding channel and is rotationally connected with the feeding channel, and the sealing plate is in sliding fit with the top of the feeding channel;
the linkage mechanism is used for driving the storage sheave and the sealing plate to be linked, and ensures that the storage sheave can cause the sealing plate to slide to be closed when rotating to the downward opening groove of the storage sheave, and can cause the sealing plate to slide to be open at the top of the feeding channel when rotating to the upward opening groove of the storage sheave.
According to the invention, a circulating air supply mode is adopted, fresh air is blown to the first batch of ground polyacrylamide powder only, and the dry air after moisture absorption of the first batch of ground polyacrylamide powder is circularly sent to the air inlet pipe through the circulating pipe, so that repeated feeding of the dry air is realized, and the problem of moisture absorption of the subsequent batch of polyacrylamide powder is solved.
Because a part of the polyacrylamide powder can be suspended in the air when the ground polyacrylamide powder is mixed with the air, the polyacrylamide grinding device based on the circulating air flow only needs to introduce fresh air once, and the amount of the ground polyacrylamide powder brought out by each fresh air blowing is reduced.
The quantitative feeding device can realize quantitative feeding by rotating the first rotating shaft positively and negatively and matching with the open slot of the storage sheave to limit the feeding amount, realize the cooperative matching of a plurality of procedures such as quantitative feeding, cover sealing and the like, and simplify the complexity of operation.
Preferably, the linkage mechanism comprises a first rotating shaft, a first gear, a second gear, a screw rod, a first transmission device, a reversing device, a second transmission device and a second rotating shaft; the first rotating shaft is rotatably connected with the side wall of the feeding channel through a first bearing, and the first gear is sleeved on the first rotating shaft and limited in the inner cavity of the feeding channel; the second gear is sleeved on the second rotating shaft, the second rotating shaft is rotatably connected with the side wall of the feeding channel through a second bearing, the storage sheave is sleeved on the second rotating shaft, and the second gear is meshed with the first gear; the second transmission device is in transmission with the first transmission device through the reversing device, a driven wheel of the second transmission device is sleeved on the screw rod, one end of the screw rod is rotatably connected with one side wall of the top of the feeding channel through a third bearing, the other end of the screw rod penetrates through the top of the feeding channel and extends out of the other side wall of the top of the feeding channel, and a through hole is formed in the other side wall of the top of the feeding channel; the sealing plate can stretch into to in the opening and with the lead screw cooperation, it is relative to seal the plate the opening removes can cause feedstock channel's open-top switching.
The invention solves the second technical problem by the following technical means: a proppant mixing system based on polyacrylamide powder comprises a polyacrylamide grinding machine, a cyclone dust removal device, an air extraction pump, an air inlet pipe, a discharge pipe, an air outlet pipe, a circulating pipe, a storage bin, a blanking channel, an intermittent blanking roller, an annular water pipe, a blanking channel, a deflection channel, a feeding pipe and a transit storage tank; the gas outlet end of the gas inlet pipe is communicated with the gas inlet of the polyacrylamide grinding machine, and two ends of the discharge pipe are respectively communicated with the discharge hole of the polyacrylamide grinding machine and the feed inlet of the cyclone dust removal device; two ends of the air outlet pipe are respectively communicated with an air outlet of the cyclone dust removal device and an air inlet end of the circulating pipe, an air outlet end of the circulating pipe is communicated with an air inlet end of the air inlet pipe, the air lifting pump is respectively arranged on the circulating pipe and the air inlet pipe, and the valve is respectively arranged on the circulating pipe and the air inlet pipe; the bottom of the cyclone dust removal device is communicated with a feed inlet of the transfer storage tank through a feed delivery pipe; the materials in the transfer storage tank can be conveyed into the storage bin, the lower end of the storage bin is provided with an opening, the higher end of the blanking channel is positioned below the opening, and the lower end of the blanking channel extends into the annular through hole of the annular water pipe;
the annular water pipe is arranged above the blanking channel and ensures that the projection of the annular through hole of the annular water pipe in the vertical direction is completed and falls in the top opening area of the blanking channel; the annular water pipe is provided with a water inlet and a water outlet, the water outlets are surrounded on the annular water pipe, and water flowing out of the water outlets can be sprayed into the annular through hole of the annular water pipe;
the bottom of the blanking channel is communicated with the top of the deflection channel, and the feeding pipe is communicated with the middle section of the deflection channel;
the intermittent blanking roller is rotationally connected with the blanking channel, and two ends of the intermittent blanking roller are in contact with or close to corresponding side walls in the blanking channel;
the section of the intermittent blanking roller is in a segmental shape, the arc section of the intermittent blanking roller is tangent to the inner bottom wall of the blanking channel when the arc section of the intermittent blanking roller faces downwards, and a gap is reserved between the non-arc section of the intermittent blanking roller and the inner bottom wall of the blanking channel when the non-arc section of the intermittent blanking roller faces downwards.
The polyacrylamide powder to be ground is put into the grinding bin of the polyacrylamide grinding machine through the feeding hole of the polyacrylamide grinding machine to be ground. After grinding, the valves closest to the air inlet pipe in the air lifting pumps and the circulating pipe are opened, outside air is blown into a grinding bin of the polyacrylamide grinding machine from an air inlet of the polyacrylamide grinding machine through the air inlet pipe, ground polyacrylamide powder is blown into the cyclone dust removal device through the discharge pipe, the ground polyacrylamide powder is settled at the bottom of the cyclone dust removal device under the action of the cyclone dust removal device, and dry air after moisture absorption of the ground polyacrylamide powder enters the circulating pipe from the top of the cyclone dust removal device through the air outlet pipe so as to blow the next batch of ground polyacrylamide powder to the cyclone dust removal device for use. When the dry air is recycled, the air extracting pump on the air inlet pipe and the valve on the air inlet pipe are closed, and other air extracting pumps and valves are opened. The air outlet end of the circulating pipe is positioned between the valve on the air inlet pipe and the air inlet of the polyacrylamide grinding machine. The feed pump and feed valve remain closed during the milling process.
When the ground polyacrylamide powder needs to be stored, the ground polyacrylamide powder flows into the transfer storage tank for caching by closing each air lifting pump and each valve and opening the feeding pump and the feeding valve on the conveying pipeline.
When the ground polyacrylamide powder and the quartz sand need to be mixed, the feeding pump and the feeding valve which are arranged in the transfer storage tank and are communicated with the polyacrylamide storage bin are opened by closing each air lifting pump and each valve, the ground polyacrylamide powder is fed into the polyacrylamide storage bin through the feeding pipe and is stored in the storage bin. Under the action of gravity, polyacrylamide flows along the feeding channel in a guiding way (from top to bottom) through the lower end opening of the storage bin; when the intermittent blanking roller rotates to the position that the arc section of the intermittent blanking roller is tangent to the inner bottom wall of the blanking channel, the intermittent blanking roller forms a material baffle plate to separate and block polyacrylamide in the blanking channel; when the intermittent blanking roller rotates to enable the non-circular arc of the intermittent blanking roller to be opposite to the inner bottom wall of the blanking channel, a gap exists between the intermittent blanking roller and the inner bottom wall of the blanking channel, and part of polyacrylamide flows into the annular through hole of the annular water pipe through the gap, so that the polyacrylamide batch-wise intermittent blanking is realized. Injecting water into a water inlet on the annular water pipe, spraying the water inlet on the polyacrylamide of the batch through a plurality of water outlets, then leading the water and the polyacrylamide to enter a baffling channel through a blanking channel, baffling the polyacrylamide in the baffling channel to be premixed with water, sending quartz sand and other auxiliary agents into the middle section of the baffling channel from a feed pipe through a material lifting pump, mixing the quartz sand and the other auxiliary agents with the water-containing polyacrylamide, flowing out from the bottom of the baffling channel after mixing, completing mixing, and directly conveying the mixed propping agent to a construction site through a pipe body.
Because polyacrylamide itself has a strong hygroscopicity, if fresh air is used to blow the ground polyacrylamide powder each time, the water content of the ground polyacrylamide powder of each batch is large. According to the invention, a circulating air supply mode is adopted, fresh air is blown to the first batch of ground polyacrylamide powder only, and the dry air after moisture absorption of the first batch of ground polyacrylamide powder is circularly sent to the air inlet pipe through the circulating pipe, so that repeated feeding of the dry air is realized, and the problem of moisture absorption of the subsequent batch of polyacrylamide powder is solved. Because a part of the polyacrylamide powder can be suspended in the air when the ground polyacrylamide powder is mixed with the air, the proppant mixing system based on the polyacrylamide powder only needs to introduce fresh air once, and the amount of the ground polyacrylamide powder brought out by each time of fresh air blowing is reduced.
The invention realizes that the polyacrylamide in the storage bin flows into the annular through hole of the annular water pipe in batches and intermittently and is premixed with water sprayed into the annular through hole, thus avoiding the problems of agglomeration, high viscosity and the like caused by directly mixing a large amount of polyacrylamide with a large amount of water. The annular water pipe is surrounded by the plurality of water outlets, so that polyacrylamide flowing into the annular through hole of the annular water pipe can be ensured to be fully contacted with water, and dead angles which cannot be contacted with water are reduced or avoided; the premixing time and degree of polyacrylamide and water can be prolonged through the baffling channel, and the subsequent full mixing with quartz sand and the like is ensured.
Preferably, the polyacrylamide grinder comprises a polyacrylamide grinder body and a feeding device, wherein the feeding device is arranged at a feeding port of the polyacrylamide grinder body;
the feeding device comprises a feeding channel, a storage grooved wheel, a sealing plate and a linkage mechanism; the feeding channel is communicated up and down, and the bottom of the feeding channel is communicated with a feeding hole of the polyacrylamide grinder body; the storage sheave is limited in the inner cavity of the feeding channel and is rotationally connected with the feeding channel, and the sealing plate is in sliding fit with the top of the feeding channel;
the linkage mechanism is used for driving the storage sheave and the sealing plate to be linked, and ensures that the storage sheave can cause the sealing plate to slide to be closed when rotating to the downward opening groove of the storage sheave, and can cause the sealing plate to slide to be open at the top of the feeding channel when rotating to the upward opening groove of the storage sheave.
Preferably, the linkage mechanism comprises a first rotating shaft, a first gear, a second gear, a screw rod, a first transmission device, a reversing device, a second transmission device and a second rotating shaft; the first rotating shaft is rotatably connected with the side wall of the feeding channel through a first bearing, and the first gear is sleeved on the first rotating shaft and limited in the inner cavity of the feeding channel; the second gear is sleeved on the second rotating shaft, the second rotating shaft is rotatably connected with the side wall of the feeding channel through a second bearing, the storage sheave is sleeved on the second rotating shaft, and the second gear is meshed with the first gear; the second transmission device is in transmission with the first transmission device through the reversing device, a driven wheel of the second transmission device is sleeved on the screw rod, one end of the screw rod is rotatably connected with one side wall of the top of the feeding channel through a third bearing, the other end of the screw rod penetrates through the top of the feeding channel and extends out of the other side wall of the top of the feeding channel, and a through hole is formed in the other side wall of the top of the feeding channel; the sealing plate can stretch into to in the opening and with the lead screw cooperation, it is relative to seal the plate the opening removes can cause feedstock channel's open-top switching.
Preferably, the first transmission device comprises a first driving wheel, a first driven wheel and a first belt; the second transmission device comprises a second driving wheel, a second driven wheel and a second belt; the reversing device comprises a first conical wheel and a second conical wheel;
the first driving wheel is sleeved on the first rotating shaft, the first driven wheel is sleeved on the fourth rotating shaft, and the first belt is sleeved between the first driving wheel and the first driven wheel; the first conical wheel is sleeved on the fourth rotating shaft and meshed with the second conical wheel; the second conical wheel is sleeved on the fifth rotating shaft, and the second driving wheel is sleeved on the fifth rotating shaft and is linked with a second driven wheel sleeved on the screw rod through a second belt.
Preferably, the top of the annular water pipe is provided with an annular opening concentric with the annular water pipe, and a rubber sealing ring is in sliding fit in the annular water pipe;
the inner side of the annular water pipe comprises one side provided with the water outlet and the other side opposite to the one side;
one side of the rubber sealing ring is in contact with one side of the annular water pipe, and a gap is formed between the other side of the rubber sealing ring and the other side of the annular water pipe;
the top of the rubber sealing ring extends out of the annular opening and is in sealing contact with the annular opening;
the rubber sealing ring is provided with water guide holes which are in one-to-one correspondence with the water outlets, and the rubber sealing ring can be rotated to adjust the dislocation degree between the water outlets and the water guide holes.
Preferably, annular water pipe top is provided with rotation motor, connecting rod, the rotation motor stiff end is fixed in the frame, the rotation motor output passes through the connecting rod with rubber seal ring's top stretches out annular open-ended part is connected.
Preferably, the intermittent type unloading roller cup joints in the pivot, the both ends of pivot respectively through the bearing with the lateral wall that corresponds in the unloading passageway rotates and is connected, the tip of pivot stretches out the unloading passageway is connected with driving motor's output shaft, driving motor's stiff end is fixed in the frame.
Preferably, the number of the cyclone dust removing devices is two, and the two cyclone dust removing devices are connected in series through a connecting pipe.
The invention has the advantages that: because polyacrylamide itself has a strong hygroscopicity, if fresh air is used to blow the ground polyacrylamide powder each time, the water content of the ground polyacrylamide powder of each batch is large. According to the invention, a circulating air supply mode is adopted, fresh air is blown to the first batch of ground polyacrylamide powder only, and the dry air after moisture absorption of the first batch of ground polyacrylamide powder is circularly sent to the air inlet pipe through the circulating pipe, so that repeated feeding of the dry air is realized, and the problem of moisture absorption of the subsequent batch of polyacrylamide powder is solved. Because a part of the polyacrylamide powder can be suspended in the air when the ground polyacrylamide powder is mixed with the air, the proppant mixing system based on the polyacrylamide powder only needs to introduce fresh air once, and the amount of the ground polyacrylamide powder brought out by each time of fresh air blowing is reduced.
The invention realizes that the polyacrylamide in the storage bin flows into the annular through hole of the annular water pipe in batches and intermittently and is premixed with water sprayed into the annular through hole, thus avoiding the problems of agglomeration, high viscosity and the like caused by directly mixing a large amount of polyacrylamide with a large amount of water. The annular water pipe is surrounded by the plurality of water outlets, so that polyacrylamide flowing into the annular through hole of the annular water pipe can be ensured to be fully contacted with water, and dead angles which cannot be contacted with water are reduced or avoided; the premixing time and degree of polyacrylamide and water can be prolonged through the baffling channel, and the subsequent full mixing with quartz sand and the like is ensured.
Drawings
FIG. 1 is a schematic diagram of a polyacrylamide powder based proppant mixing system according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a polyacrylamide grinder according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a polyacrylamide grinding machine in a top view according to an embodiment of the present invention.
Fig. 4 is a partially enlarged view of fig. 3 according to the present invention.
Fig. 5 is a schematic structural diagram of the annular water pipe in the working state in the embodiment of the invention.
Fig. 6 is a schematic structural view of an annular water pipe in a top view state according to an embodiment of the present invention.
FIG. 7 is a schematic structural diagram of the blanking channel and the deflecting channel in a matched state according to the embodiment of the present invention.
Fig. 8 is a schematic structural diagram of the annular water pipe in the working state in the embodiment of the invention.
Fig. 9 is a schematic structural view of the water outlet and the water guide hole in a dislocated state in the embodiment of the present invention.
Fig. 10 is a schematic sectional view of the annular water pipe in the embodiment of the present invention.
FIG. 11 is a schematic structural diagram of an annular water and rubber sealing ring in a matching state in the embodiment of the invention.
Fig. 12 is a schematic structural diagram of a fracturing proppant mixing device based on a blender in a side view state according to an embodiment of the invention.
Fig. 13 is a schematic structural view of a blanking channel in a material guiding state according to an embodiment of the present invention.
Fig. 14 is a schematic structural view of a blanking channel in a material blocking state in the embodiment of the invention.
Fig. 15 is a schematic structural view of a polyacrylamide grinder body according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are 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.
Example 1
As shown in fig. 1, the present embodiment discloses a proppant mixing system based on polyacrylamide powder, which includes a polyacrylamide grinder 1, a cyclone dust collector 2, an air lift pump 3, an air inlet pipe 4, a discharge pipe 5, an air outlet pipe 6, a circulation pipe 7, a storage bin 101, a feeding channel 102, an intermittent feeding roller 103, an annular water pipe 104, a feeding channel 105, a deflection channel 106, a feeding pipe 10901, and a transit storage tank 10015. The air outlet end of the air inlet pipe 4 is communicated with the air inlet of the polyacrylamide grinder 1, and the two ends of the discharge pipe 5 are respectively communicated with the discharge hole of the polyacrylamide grinder 1 and the feed inlet of the cyclone dust removal device 2. Two ends of the air outlet pipe 6 are respectively communicated with an air outlet of the cyclone dust removal device 2 and an air inlet end of the circulating pipe 7, an air outlet end of the circulating pipe 7 is communicated with an air inlet end of the air inlet pipe 4, the air lifting pump 3 is respectively arranged on the circulating pipe 7 and the air inlet pipe 4, and the valve 8 is respectively arranged on the circulating pipe 7 and the air inlet pipe 4. The bottom of the cyclone dust collector 2 is communicated with the feed inlet of the transfer storage tank 10015 through a feed delivery pipe 10011; the materials in the transfer storage tank can be conveyed to the storage bin 101, the lower end of the storage bin 101 is open, the higher end of the blanking channel 102 is located below the opening, and the lower end of the blanking channel 102 extends into the annular through hole of the annular water pipe 104.
As shown in fig. 13 and 14, the bottom of the blanking channel 102 is inclined. The annular water pipe 104 is arranged above the blanking channel 105 and ensures that the projection of the annular through hole of the annular water pipe 104 in the vertical direction is completed and falls in the top opening area of the blanking channel 105. The annular water pipe 104 is provided with a water inlet and a plurality of water outlets 1042, the plurality of water outlets 1042 surround the annular water pipe 104, and water flowing out of the water outlets 1042 can be sprayed into the annular through hole of the annular water pipe 104. The bottom of the blanking channel 105 is communicated with the top of the deflection channel 106, and the feeding pipe 10901 is communicated with the middle section of the deflection channel 4. A feed pump 10012 and a feed valve 10013 are provided in the feed pipe 10011.
The intermittent blanking roller 103 is rotatably connected with the blanking channel 102, and two ends of the intermittent blanking roller 103 are in contact with or close to corresponding side walls in the blanking channel 102.
As shown in fig. 13 and 14, the intermittent blanking roller 103 has a truncated-circle cross section, and has a circular arc section which is tangent to the inner bottom wall of the blanking channel 102 when facing downward, and a non-circular arc section which is tangent to the inner bottom wall of the blanking channel 102 when facing downward.
As shown in fig. 2, 13 and 14, the intermittent discharging roller 103 is sleeved on the rotating shaft 10102, two ends of the rotating shaft 10102 are rotatably connected with corresponding side walls in the discharging channel 102 through rotating shaft bearings, the end of the rotating shaft 10102 extends out of the discharging channel 102 to be connected with an output shaft of the intermittent discharging roller motor 10101, and the fixed end of the intermittent discharging roller motor 10101 is fixed on the second frame.
This embodiment drives pivot 10102 and rotates through starting intermittent type unloading roller motor 10101, and then drives intermittent type unloading roller 103 and rotates.
The polyacrylamide powder to be ground is put into the grinding bin of the polyacrylamide grinder 1 through the feed opening of the polyacrylamide grinder 1 for grinding. After grinding, the air extracting pump 3 and the valve 8 closest to the air inlet pipe 4 in the circulating pipe 7 are opened, other valves 8 are opened, outside air is blown into a grinding bin of the polyacrylamide grinding machine 1 from an air inlet of the polyacrylamide grinding machine 1 through the air inlet pipe 4, ground polyacrylamide powder is blown into the cyclone dust removal device 2 through the discharge pipe 5, the ground polyacrylamide powder is settled at the bottom of the cyclone dust removal device 2 under the action of the cyclone dust removal device 2, and dry air after moisture absorption of the ground polyacrylamide powder enters the circulating pipe 7 from the top of the cyclone dust removal device 2 through the air outlet pipe 6 for blowing the next batch of ground polyacrylamide powder to the cyclone dust removal device 2 for use. When the dry air is recycled, the air extracting pump 3 on the air inlet pipe 4 and the valve 8 on the air inlet pipe 4 are closed, and the other air extracting pumps 3 and the valve 8 are opened. The air outlet end of the circulating pipe 7 is positioned between the valve 8 on the air inlet pipe 4 and the air inlet of the polyacrylamide grinding machine 1. The feed pump 10012 and feed valve 10013 remain closed during the milling process.
When the ground polyacrylamide powder needs to be stored, the air pump 3 and the valve 8 are closed, and the feed pump 10012 and the feed valve 10013 on the feed delivery pipe 10011 are opened, so that the ground polyacrylamide powder flows into the transit storage tank 10015 for buffering.
When the ground polyacrylamide powder and the quartz sand need to be mixed, the feed pump 10012 and the feed valve 10013 in the feed pipe 10014 of the transit storage tank 10015, which is communicated with the storage bin 101 and stores the polyacrylamide, are opened by closing each of the lift pumps 3 and the valves 8, and the ground polyacrylamide powder is fed to the polyacrylamide through the feed pipe 10014 and stored in the storage bin 101, however, the feed pipe 10014 and the feed pump 10012 are not arranged in the transit storage tank 10015, but the feed valve 10013 is arranged at the outlet of the transit storage tank 10015, and when the ground polyacrylamide powder and the quartz sand need to be mixed, the feed valve 10013 at the outlet of the transit storage tank 10015 is opened, and the ground polyacrylamide powder is manually fed into the storage bin 101 after being taken out. Under the action of gravity, polyacrylamide flows along the blanking channel 102 in a guiding manner (from top to bottom) through the lower end opening of the storage bin 101; when the intermittent feeding roller 103 rotates until the arc section of the intermittent feeding roller is tangent to the inner bottom wall of the feeding channel 102, the intermittent feeding roller 103 forms a material baffle plate to separate and block polyacrylamide in the feeding channel 102; when the intermittent blanking roller 103 rotates to enable the non-circular arc to be opposite to the inner bottom wall of the blanking channel 102, a gap exists between the intermittent blanking roller and the inner bottom wall of the blanking channel 102, and part of polyacrylamide flows into the annular through hole of the annular water pipe 104 through the gap, so that the polyacrylamide is blanked in batches and intermittently. Injecting water into a water inlet on the annular water pipe 104, spraying the water inlet on the polyacrylamide of the batch through a plurality of water outlets 1042, then leading the water to enter a baffling channel 106 together through a blanking channel 105, baffling the polyacrylamide in the baffling channel 106 to be premixed with the water, sending quartz sand and other auxiliary agents into the middle section of the baffling channel 4 from a feed pipe 10901 through a material lifting pump, mixing the quartz sand and the other auxiliary agents with the water-containing polyacrylamide together, flowing out from the bottom of the baffling channel 4 after mixing, completing mixing, and directly conveying the mixed propping agent to a construction site through a pipe body.
Because polyacrylamide itself has a strong hygroscopicity, if fresh air is used to blow the ground polyacrylamide powder each time, the water content of the ground polyacrylamide powder of each batch is large. The invention adopts a circulating air supply mode, only fresh air is blown to the first batch of ground polyacrylamide powder, and the dry air after moisture absorption of the first batch of ground polyacrylamide powder is circularly sent to the air inlet pipe 4 through the circulating pipe 7, so that the repeated feeding of the dry air is realized, and the problem of moisture absorption of the subsequent batch of polyacrylamide powder is solved. Because a part of the polyacrylamide powder can be suspended in the air when the ground polyacrylamide powder is mixed with the air, the proppant mixing system based on the polyacrylamide powder only needs to introduce fresh air once, and the amount of the ground polyacrylamide powder brought out by each time of fresh air blowing is reduced.
According to the invention, the polyacrylamide in the storage bin 101 intermittently flows into the annular through hole of the annular water pipe 104 in batches and is premixed with water sprayed into the annular through hole, so that the problems of agglomeration, high viscosity and the like caused by directly mixing a large amount of polyacrylamide with a large amount of water are avoided. According to the invention, the plurality of water outlets 1042 surround the annular water pipe 104, so that polyacrylamide flowing into the annular through hole of the annular water pipe 104 can be ensured to be fully contacted with water, and dead angles which cannot be contacted with water are reduced or avoided; the duration and degree of premixing of polyacrylamide and water can be extended by the baffled passage 106 to ensure adequate subsequent mixing with quartz sand and the like.
As shown in fig. 2, it is preferable that the water inlet is plural, each of which is communicated with the water inlet pipe 108, and a pump is installed on the water inlet pipe 108. The water supply is pumped into the annular water pipe 104 by the pumping action of the pump.
As shown in fig. 7, the blanking cavity of the blanking channel 105 is preferably in a truncated cone shape with a wide top and a narrow bottom. The circular truncated cone-shaped blanking cavity with the wide upper part and the narrow lower part can facilitate centralized and accurate blanking of the water-containing polyacrylamide.
As shown in fig. 7, preferably, the baffle channel 106 includes a channel body and a baffle 1061. A plurality of baffles 1061 are staggered from top to bottom in the channel body. The aqueous polyacrylamide flows and mixes in a serpentine shape from top to bottom under the action of the plurality of baffle plates 1061.
Preferably, according to different actual working conditions, such as the total length of the device, the air lifting pump 3 can be arranged at a plurality of positions of each pipe body, such as the air inlet pipe 4, the air outlet pipe 5, the air outlet pipe 6 and the circulating pipe 7, so that the blowing strength of air is ensured.
As shown in fig. 2 to 4, the present embodiment also discloses a preferably polyacrylamide grinder 1, comprising a polyacrylamide grinder body 11 and a feeding device, which is provided at the feeding port of the polyacrylamide grinder body 11.
The feeding device comprises a feeding channel 121, a storage sheave 122, a sealing plate 123 and a linkage mechanism. The feed channel 121 is vertically connected and the bottom thereof is connected to the feed inlet of the polyacrylamide mill body 11. The storage sheave 122 is limited in the inner cavity of the feeding channel 121 and is connected with the feeding channel 121 in a rotating manner, and the sealing plate 123 is in sliding fit with the top of the feeding channel 121. The linkage mechanism is used for driving the storage sheave 122 and the sealing plate 123 to be linked, an opening 1221 is formed in the storage sheave 122, and it is ensured that the sealing plate 123 slides to the top of the closed feeding passage 121 when the storage sheave 122 rotates to the state that the opening 1221 faces downward, and the sealing plate 123 slides to the top opening of the feeding passage 121 when the storage sheave 122 rotates to the state that the opening 1221 faces upward.
The linkage mechanism comprises a first rotating shaft 1241, a first gear 1242, a second gear 1243, a screw rod 1244, a first transmission device, a reversing device, a second transmission device and a second rotating shaft. The first rotating shaft 1241 is rotatably connected with the side wall of the feeding channel 121 through a first bearing, and the first gear 1242 is sleeved on the first rotating shaft 1241 and limited in the inner cavity of the feeding channel 121. The second gear 1243 is sleeved on the second rotating shaft, and the storage sheave 122 is sleeved on the second rotating shaft. The second rotation shaft is rotatably connected to a sidewall of the feeding passage 121 by a second bearing, and the second gear 1243 is engaged with the first gear 1242. The second transmission device is in transmission with the first transmission device through the reversing device, a driven wheel of the second transmission device is sleeved on the screw rod 1244, one end of the screw rod 1244 is rotatably connected with one side wall of the top of the feeding channel 121 through a third bearing, the other end of the screw rod 1244 penetrates through a top opening of the feeding channel 121 and extends out of the other side wall of the top of the feeding channel 121, and a through opening is formed in the other side wall of the top of the feeding channel 121. The sealing plate 123 can extend into the through opening and is matched with the screw rod 1244, and the top opening of the feeding channel 121 can be opened and closed by moving the sealing plate 123 relative to the through opening.
The first transmission device includes a first driving wheel 12461, a first driven wheel 12462 and a first belt 12463. The second transmission device comprises a second driving wheel 12471, a second driven wheel 12472 and a second belt 12473. The reversing device comprises a first conical wheel 12481 and a second conical wheel 12482.
The first driving pulley 12461 is sleeved on the first rotating shaft 1241, the first driven pulley 12462 is sleeved on the fourth rotating shaft 12491, and the first belt 12463 is sleeved between the first driving pulley 12461 and the first driven pulley 12462. The first cone-shaped wheel 12481 is sleeved on the fourth rotating shaft 12491 and meshed with the second cone-shaped wheel 12482, and the fourth rotating shaft 12491 is rotatably connected with the first frame through a fourth bearing. The second cone 12482 is sleeved on the fifth rotating shaft 12492, and the second driving wheel 12471 is sleeved on the fifth rotating shaft 12492 and is linked with the second driven wheel 12472 sleeved on the screw rod 1244 through the second belt 12473. The fifth rotating shaft 12492 is rotatably connected to the polyacrylamide grinder body 11 through a fifth bearing.
In this embodiment, by rotating the first rotating shaft 1241, specifically, by hand cranking or driving the first rotating shaft to rotate by a motor, the first rotating shaft 1241 rotates to drive the first gear 1242 to rotate, and drives the second gear 1243 engaged with the first gear 1242 to rotate, so as to drive the second rotating shaft to rotate, and drive the storage sheave 122 to rotate; meanwhile, the first rotating shaft 1241 rotates to drive the first driving wheel 12461 to rotate, the first driven wheel 12462 is driven to rotate through transmission of the first belt 12463, the fourth rotating shaft 12491 is driven to rotate, the first cone-shaped wheel 12481 is driven to rotate, the second cone-shaped wheel 12482 meshed with the first cone-shaped wheel 12481 is driven to rotate, the fifth rotating shaft 12492 is driven to rotate through reversing of the second cone-shaped wheel 12482, the second driving wheel 12471 is driven to rotate, the second driven wheel 12472 is driven to rotate through transmission of the second belt 12473, the screw rod 1244 is driven to rotate, the sealing plate 123 is driven to slide along the guiding direction of the screw rod 1244, and the sealing plate 123 moves relative to the opening.
Since the rotation of the storage sheave 122 to the downward opening 1221 thereof causes the hush plate 123 to slide to the top of the closed feeding passage 121, the rotation of the storage sheave 122 to the upward opening 1221 thereof causes the hush plate 123 to slide to the top opening of the feeding passage 121.
According to the invention, by rotating the first rotating shaft 1241 in the forward direction, the storage sheave 122 is adjusted to rotate until the open slot 1221 faces upwards, at the moment, the top of the feeding channel 121 is open, at the moment, polyacrylamide to be ground is put into the open slot 1221, then the first rotating shaft 1241 is rotated in the reverse direction, when the storage sheave 122 rotates until the open slot 1221 faces downwards, the polyacrylamide to be ground in the open slot falls into the grinding bin of the polyacrylamide grinder body 11, and at the moment, the sealing plate 123 slides to the top of the closed feeding channel 121, so that the polyacrylamide to be ground is guaranteed to be ground under a sealed condition, thereby preventing external dust from entering and reducing potential safety hazards. After grinding, air is blown for one or more times in a circulating manner, the polyacrylamide powder after grinding in the current batch is blown for sedimentation, and then the first rotating shaft 1241 is rotated in the forward direction, so that the storage sheave 122 rotates until the open slot 1221 thereof faces upwards and the sealing plate 123 slides to the top opening of the feeding channel 121 for feeding next time.
It should be noted that, when a person skilled in the art uses the structure of the present invention, for different working conditions, only specifications of each component of the present embodiment, such as a size of each gear, a spiral direction of the screw rod, a length of the screw rod, etc., are adjusted to meet requirements of devices of different models and specifications, and the present invention should be within a protection scope of the present invention.
Example 2
As shown in fig. 2, the present embodiment is different from the above embodiments in that the number of the screw rods 1244 is two, and symmetrically disposed at both ends of the top of the feed channel 121. A driven wheel (a second driven wheel 12472) of the second transmission device is sleeved on one of the screw rods 1244. The two screw rods 1244 are linked through a third transmission device.
The third transmission device comprises a first driving wheel 12401, a second driving wheel 12402 and a third belt 12403, the first driving wheel 12401 and the second driving wheel 12402 are respectively sleeved on the corresponding screw rods 1244, and the third belt 12403 is sleeved on the first driving wheel 12401 and the second driving wheel 12402.
The two screw rods 1244 are arranged to ensure the stability of the movement of the sealing plate 123.
Example 3
The present embodiment is different from the above embodiments in that the valve 8 of the present invention is not limited to be arranged at the inlet end of the inlet pipe 4 and on the circulating pipe 7, and the present invention can arrange the valve 8 at a plurality of positions of each pipe body such as the inlet pipe 4, the outlet pipe 5, the outlet pipe 6 and the circulating pipe 7 according to different actual working conditions, such as the total length of the device.
Preferably, in the present invention, when feeding with the feeding device, the respective stripping pumps 3, valves 8 are kept closed, and the drying air is preferably retained in the circulation pipe 7. The lift pump 3 of the present invention may also be replaced with a prior art blower.
Example 4
This embodiment is different from the above embodiments in that a weather strip is further provided on the side circumferential surface of the sealing plate 123. Further, the sealing property of the sealing plate 123 after closing is improved.
Example 5
As shown in fig. 1, the number of the cyclone devices 2 is two, and the two cyclone devices 2 are arranged in series by a connection pipe 9. By arranging the plurality of cyclone dust removal devices 2, the collecting efficiency of the ground polyacrylamide is improved. The cyclone dust removing apparatus 2 of the present invention is prior art.
Example 6
As shown in fig. 12, the present embodiment is different from the above-described embodiments in that: the mixer further comprises a mixer 107, and a first guide plate 1091 and a second guide plate 1092 are arranged between the baffling channel 106 and the mixer 107. The first and second guide plates 1091 and 1092 form a guide passage having a large top opening and a small bottom opening. The material flowing out of the bottom of the deflecting channel 106 can flow into the deflecting mixer 107 through the guide channel.
The first guide plate 1091 and the second guide plate 1092 form an inverted-splayed guide channel, so that the premixed water-containing polyacrylamide can be conveniently and accurately dropped into the mixer 107.
This embodiment provides a concrete blendor 107 structure of rolling over, including ascending blending bunker 1071 of opening, agitating unit is used for stirring the material in the blending bunker 1071. Of course, other material folding and mixing machines 107 according to the prior art are also within the scope of the present invention. A mixing device for oil fracturing proppant production as disclosed in patent application 201820781616.0.
The stirring device comprises a stirring motor 10721 and a stirring paddle 10722. The stiff end of agitator motor 10721 is fixed in the second frame, and agitator motor 10721's output is connected with stirring rake 10722, and stirring rake 10722 stretches into in blending bunker 1071. By starting the agitator motor 10721, the agitator paddle 10722 is driven to rotate to mix the materials in the mixing silo 1071.
In order to further increase the degree of mixing, the present invention drops the material flowing out of the bottom of the deflecting channel 4 into the deflecting mixer 107 for secondary mixing.
Example 7
As shown in fig. 9 to 11, the present embodiment is different from the above embodiments in that: the top of the annular water pipe 104 is provided with an annular opening concentric with the annular water pipe 104, and a rubber sealing ring 1041 is slidably fitted in the annular water pipe 104.
As shown in fig. 7, the inner side of the annular water pipe 104 includes a side opened with a water outlet 1042 and another side opposite to the side.
One side of the rubber sealing ring 1041 is in contact with one side of the annular water pipe 104, and a gap is formed between the other side of the rubber sealing ring 1041 and the other side of the annular water pipe 104.
The top of the rubber sealing ring 1041 protrudes out of and is in sealing contact with the annular opening.
The rubber sealing ring 1041 is provided with water guide holes 10411 corresponding to the water outlets 1042 one by one, and the dislocation degree between the water outlets 1042 and the water guide holes 10411 can be adjusted by rotating the rubber sealing ring 1041.
As shown in fig. 6, a rotary motor 10431 and a connecting rod 10432 are arranged above the annular water pipe 104, a fixed end of the rotary motor 10431 is fixed on the second frame, and an output end of the rotary motor 10431 is connected with a portion of the top of the rubber sealing ring 1041, which extends out of the annular opening, through the connecting rod 10432.
This embodiment is through starting rotation motor 10431, rotates motor 10431 and rotates the angle of setting for, drives connecting rod 10432 and rotates the angle of setting for, drives rubber seal ring 1041 and rotates the angle of setting for in annular water pipe 104 to adjust the dislocation degree between delivery port 1042 and the water guiding hole 10411, and then adjust the water yield that sprays in unit interval, and then satisfy the water yield different to different polyacrylamide proportions of volume.
Example 8
As shown in fig. 15, the present embodiment is different from the above embodiments in that the polyacrylamide grinder body 11 is a horizontal grinder body including a driving motor 111, a connecting shaft 112, a blade 113, and a housing. An output shaft of the driving motor 111 is connected with one end of a connecting shaft 112, the other end of the connecting shaft 112 extends into an internal cavity (i.e. a grinding bin) of the shell, and the blade 113 is sleeved on the connecting shaft 112.
Preferably, the blade 113 has a spiral structure. As shown in fig. 2 and 5, the housing is provided with an air inlet 1141 and a discharge port 1142, the air inlet 1141 is communicated with the air inlet pipe 4, and the discharge port 1142 is communicated with the discharge pipe 5.
Other prior art horizontal grinding machine bodies, or vertical grinding machine bodies, are also within the scope of the invention when applied in the solution of the invention.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are 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 above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A polyacrylamide grinding device based on circulating airflow is characterized by comprising a polyacrylamide grinding machine, a cyclone dust removal device, an air extraction pump, an air inlet pipe, a discharge pipe, an air outlet pipe, a circulating pipe and a valve;
the gas outlet end of the gas inlet pipe is communicated with the gas inlet of the polyacrylamide grinding machine, and two ends of the discharge pipe are respectively communicated with the discharge hole of the polyacrylamide grinding machine and the feed inlet of the cyclone dust removal device; two ends of the air outlet pipe are respectively communicated with an air outlet of the cyclone dust removal device and an air inlet end of the circulating pipe, and an air outlet end of the circulating pipe is communicated with an air inlet end of the air inlet pipe; the circulating pipe and the air inlet pipe are both provided with the air extraction pump and the valve;
the polyacrylamide grinder comprises a polyacrylamide grinder body and a feeding device, wherein the feeding device is arranged at a feeding port of the polyacrylamide grinder body;
the feeding device comprises a feeding channel, a storage grooved wheel, a sealing plate and a linkage mechanism; the feeding channel is communicated up and down, and the bottom of the feeding channel is communicated with a feeding hole of the polyacrylamide grinder body; the storage sheave is limited in the inner cavity of the feeding channel and is rotationally connected with the feeding channel, and the sealing plate is in sliding fit with the top of the feeding channel;
the linkage mechanism is used for driving the storage sheave and the sealing plate to be linked, and ensures that the storage sheave can cause the sealing plate to slide to be closed when rotating to the downward opening groove of the storage sheave, and can cause the sealing plate to slide to be open at the top of the feeding channel when rotating to the upward opening groove of the storage sheave.
2. The abrading apparatus of claim 1, wherein the linkage comprises a first rotational axis, a first gear, a second gear, a lead screw, a first transmission, a reversing device, a second transmission, a second rotational axis; the first rotating shaft is rotatably connected with the side wall of the feeding channel through a first bearing, and the first gear is sleeved on the first rotating shaft and limited in the inner cavity of the feeding channel; the second gear is sleeved on the second rotating shaft, the second rotating shaft is rotatably connected with the side wall of the feeding channel through a second bearing, the storage sheave is sleeved on the second rotating shaft, and the second gear is meshed with the first gear; the second transmission device is in transmission with the first transmission device through the reversing device, a driven wheel of the second transmission device is sleeved on the screw rod, one end of the screw rod is rotatably connected with one side wall of the top of the feeding channel through a third bearing, the other end of the screw rod penetrates through the top of the feeding channel and extends out of the other side wall of the top of the feeding channel, and a through hole is formed in the other side wall of the top of the feeding channel; the sealing plate can stretch into to in the opening and with the lead screw cooperation, it is relative to seal the plate the opening removes can cause feedstock channel's open-top switching.
3. A proppant mixing system based on polyacrylamide powder is characterized by comprising a polyacrylamide grinding machine, a cyclone dust removal device, an air extraction pump, an air inlet pipe, a discharge pipe, an air outlet pipe, a circulating pipe, a storage bin, a blanking channel, an intermittent blanking roller, an annular water pipe, a blanking channel, a deflection channel, a feed pipe and a transfer storage tank;
the gas outlet end of the gas inlet pipe is communicated with the gas inlet of the polyacrylamide grinding machine, and two ends of the discharge pipe are respectively communicated with the discharge hole of the polyacrylamide grinding machine and the feed inlet of the cyclone dust removal device; two ends of the air outlet pipe are respectively communicated with an air outlet of the cyclone dust removal device and an air inlet end of the circulating pipe, an air outlet end of the circulating pipe is communicated with an air inlet end of the air inlet pipe, the air lifting pump is respectively arranged on the circulating pipe and the air inlet pipe, and the valve is respectively arranged on the circulating pipe and the air inlet pipe; the bottom of the cyclone dust removal device is communicated with a feed inlet of the transfer storage tank through a feed delivery pipe; the materials in the transfer storage tank can be conveyed into the storage bin, the lower end of the storage bin is provided with an opening, the higher end of the blanking channel is positioned below the opening, and the lower end of the blanking channel extends into the annular through hole of the annular water pipe;
the annular water pipe is arranged above the blanking channel and ensures that the projection of the annular through hole of the annular water pipe in the vertical direction is completed and falls in the top opening area of the blanking channel; the annular water pipe is provided with a water inlet and a water outlet, the water outlets are surrounded on the annular water pipe, and water flowing out of the water outlets can be sprayed into the annular through hole of the annular water pipe;
the bottom of the blanking channel is communicated with the top of the deflection channel, and the feeding pipe is communicated with the middle section of the deflection channel;
the intermittent blanking roller is rotationally connected with the blanking channel, and two ends of the intermittent blanking roller are in contact with or close to corresponding side walls in the blanking channel;
the section of the intermittent blanking roller is in a segmental shape, the arc section of the intermittent blanking roller is tangent to the inner bottom wall of the blanking channel when the arc section of the intermittent blanking roller faces downwards, and a gap is reserved between the non-arc section of the intermittent blanking roller and the inner bottom wall of the blanking channel when the non-arc section of the intermittent blanking roller faces downwards.
4. The polyacrylamide powder based proppant mixing system of claim 3 wherein the polyacrylamide grinder comprises a polyacrylamide grinder body and a feed device disposed at a feed port of the polyacrylamide grinder body;
the feeding device comprises a feeding channel, a storage grooved wheel, a sealing plate and a linkage mechanism; the feeding channel is communicated up and down, and the bottom of the feeding channel is communicated with a feeding hole of the polyacrylamide grinder body; the storage sheave is limited in the inner cavity of the feeding channel and is rotationally connected with the feeding channel, and the sealing plate is in sliding fit with the top of the feeding channel;
the linkage mechanism is used for driving the storage sheave and the sealing plate to be linked, and ensures that the storage sheave can cause the sealing plate to slide to be closed when rotating to the downward opening groove of the storage sheave, and can cause the sealing plate to slide to be open at the top of the feeding channel when rotating to the upward opening groove of the storage sheave.
5. The polyacrylamide powder based proppant mixing system of claim 4 wherein said linkage comprises a first rotating shaft, a first gear, a second gear, a lead screw, a first transmission, a reversing device, a second transmission, a second rotating shaft; the first rotating shaft is rotatably connected with the side wall of the feeding channel through a first bearing, and the first gear is sleeved on the first rotating shaft and limited in the inner cavity of the feeding channel; the second gear is sleeved on the second rotating shaft, the second rotating shaft is rotatably connected with the side wall of the feeding channel through a second bearing, the storage sheave is sleeved on the second rotating shaft, and the second gear is meshed with the first gear; the second transmission device is in transmission with the first transmission device through the reversing device, a driven wheel of the second transmission device is sleeved on the screw rod, one end of the screw rod is rotatably connected with one side wall of the top of the feeding channel through a third bearing, the other end of the screw rod penetrates through the top of the feeding channel and extends out of the other side wall of the top of the feeding channel, and a through hole is formed in the other side wall of the top of the feeding channel; the sealing plate can stretch into to in the opening and with the lead screw cooperation, it is relative to seal the plate the opening removes can cause feedstock channel's open-top switching.
6. The polyacrylamide powder based proppant mixing system of claim 5, wherein said first transmission comprises a first drive pulley, a first driven pulley, a first belt, and a fourth rotating shaft; the second transmission device comprises a second driving wheel, a second driven wheel, a second belt and a fifth rotating shaft; the reversing device comprises a first conical wheel and a second conical wheel;
the first driving wheel is sleeved on the first rotating shaft, the first driven wheel is sleeved on the fourth rotating shaft, and the first belt is sleeved between the first driving wheel and the first driven wheel; the first conical wheel is sleeved on the fourth rotating shaft and meshed with the second conical wheel; the second conical wheel is sleeved on the fifth rotating shaft, and the second driving wheel is sleeved on the fifth rotating shaft and is linked with a second driven wheel sleeved on the screw rod through a second belt.
7. The polyacrylamide powder-based proppant mixing system of claim 3, wherein the top of the annular water pipe is provided with an annular opening concentric with the annular water pipe, and a rubber sealing ring is slidably fitted in the annular water pipe;
the inner side of the annular water pipe comprises one side provided with the water outlet and the other side opposite to the one side;
one side of the rubber sealing ring is in contact with one side of the annular water pipe, and a gap is formed between the other side of the rubber sealing ring and the other side of the annular water pipe;
the top of the rubber sealing ring extends out of the annular opening and is in sealing contact with the annular opening;
the rubber sealing ring is provided with water guide holes which are in one-to-one correspondence with the water outlets, and the rubber sealing ring can be rotated to adjust the dislocation degree between the water outlets and the water guide holes.
8. The polyacrylamide powder-based proppant mixing system as set forth in claim 7, wherein a rotating motor and a connecting rod are arranged above said annular water pipe, the fixed end of said rotating motor is fixed on the frame, and the output end of said rotating motor is connected with the portion of the top of said rubber sealing ring extending out of said annular opening through said connecting rod.
9. The polyacrylamide powder-based proppant mixing system as set forth in claim 3, wherein said intermittent blanking roller is sleeved on a rotating shaft, two ends of said rotating shaft are rotatably connected with corresponding side walls in said blanking channel through bearings, respectively, an end of said rotating shaft extends out of said blanking channel and is connected with an output shaft of a driving motor, and a fixed end of said driving motor is fixed on a frame.
10. The polyacrylamide powder based proppant mixing system of claim 3 wherein there are two said cyclones, and said cyclones are connected in series by a connecting tube.
Priority Applications (2)
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| CN202010716472.2A CN111804420B (en) | 2020-07-23 | 2020-07-23 | Grinder, proppant hybrid system based on polyacrylamide powder |
| PCT/CN2020/136737 WO2022016790A1 (en) | 2020-07-23 | 2020-12-16 | Grinding device and polyacrylamide powder-based proppant mixing system |
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| CN202010716472.2A CN111804420B (en) | 2020-07-23 | 2020-07-23 | Grinder, proppant hybrid system based on polyacrylamide powder |
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| CN104861099A (en) * | 2015-05-06 | 2015-08-26 | 爱森（中国）絮凝剂有限公司 | Polyacrylamide production line |
| CN104826723B (en) * | 2015-05-12 | 2017-02-22 | 浙江超浪新材料有限公司 | Wet-method dust removal device for powder grinding machine |
| CN207567152U (en) * | 2017-12-01 | 2018-07-03 | 爱森（中国）絮凝剂有限公司 | Cationic polyacrylamide production line |
| CN108273592B (en) * | 2018-01-23 | 2019-12-10 | 海南俊盟环境科技有限公司 | Drying equipment is smashed with leaf to gardens maintenance |
| CN108787140A (en) * | 2018-05-23 | 2018-11-13 | 郑州创客科技有限公司 | A kind of efficient grinding device for the production of new energy lithium battery material |
| CN208493904U (en) * | 2018-05-24 | 2019-02-15 | 彰武兆峰硅砂有限公司 | Mixing arrangement is used in a kind of production of petroleum fracturing propping agent |
| CN209810268U (en) * | 2019-03-28 | 2019-12-20 | 郑州市豫立实业有限公司 | Superfine zirconia grinding machine |
| CN111804420B (en) * | 2020-07-23 | 2021-12-10 | 安徽巨成精细化工有限公司 | Grinder, proppant hybrid system based on polyacrylamide powder |
-
2020
- 2020-07-23 CN CN202010716472.2A patent/CN111804420B/en active Active
- 2020-12-16 WO PCT/CN2020/136737 patent/WO2022016790A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022016790A1 (en) | 2022-01-27 |
| CN111804420A (en) | 2020-10-23 |
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