Granular material screening and integrated packaging system

Abstract

The utility model discloses a granular material screening integrated packaging system which comprises a screening device, a vibration motor is installed on the screening device, a screening groove is formed in the top of the screening device in an inward concave mode, and a supporting part is arranged at the bottom of the screening device. A plurality of screening layers are sequentially arranged in the screening groove at intervals from top to bottom, the periphery of each screening layer is connected with the side wall of the screening groove, a discharging port is formed in the side wall of the screening groove and located on one side of the top of each screening layer, and the discharging ports extend to the outer side of the screening device. A first conveying belt is arranged at the position, located at the bottom of each discharging port, of the outer side wall of the screening device, corresponding material collecting boxes are installed at the discharging ends of the first conveying belts, and second conveying belts are arranged at the discharging ends of the multiple material collecting boxes. And the second conveying belt is used for sequentially laying the granular materials with different particle sizes in the material collecting boxes on the second conveying belt in an overlapping manner and conveying the granular materials into the packing belt, so that each layer of granular materials in the packing belt are uniformly mixed, and the detection standard requirements are met.

Description

Technical Field

[0001] The utility model relates to a granular material screening integrated packaging system, in particular to a granular material screening integrated packaging system for petroleum fracturing, belonging to the technical field of fracturing. Background Art

[0002] During the production process of fracturing proppants, the particle size distribution of the proppant in each batch is uneven, and the proportion of particle size grades in the proppant cannot be guaranteed. Therefore, the existing Chinese utility model patent with announcement number CN217797222U discloses a screening and collection device for petroleum fracturing proppants, which arranges multiple groups of screening arc plates side by side in the vertical direction, and installs a vibration motor on one side of each screening arc plate to drive the multiple groups of screening arc plates to vibrate to screen the proppant, and at the same time, the screened proppant is stored in the corresponding collection unit according to the particle size, and then the particle size of the proppant is graded according to national standards.

[0003] However, the above method is only used to screen the proppant according to different particle sizes, but cannot be used to evenly mix proppant of different particle sizes. In the packaging process, in order to avoid affecting the particle size of the proppant, proppant of different particle sizes are directly loaded into the same packaging bag according to a certain proportion, resulting in uneven distribution of particle size ratio of each layer of proppant in the packaging bag, which cannot meet the detection standard requirements. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a granular material screening integrated packaging system to solve the technical problems mentioned in the prior art.

[0005] A granular material screening integrated packaging system comprises a sifter, a vibration motor is installed on the sifter, a material receiving box is installed at the discharging end of the sifter, and after the granular material is fed into the feeding end of the sifter, the sifter is driven by the vibration motor to screen the granular material, and the screened granular material is respectively sent to the corresponding material receiving box according to the particle size, the top of the sifter is inwardly concave to be provided with a screening slot, and the bottom of the sifter is provided with a supporting part;

[0006] A plurality of screening layers are sequentially arranged in the screening trough from top to bottom, the outer periphery of each screening layer is respectively connected to the side wall of the screening trough, a discharge port is respectively arranged on the side wall of the screening trough at the top side of each screening layer, the discharge port extends to the outside of the sifter, a first conveyor belt is respectively arranged on the outer side wall of the sifter at the bottom of each discharge port, and the discharge end of the first conveyor belt is installed with the corresponding material receiving box;

[0007] Several of the material receiving boxes are arranged side by side in the horizontal direction, and a second conveyor belt is provided at the discharge end of several of the material receiving boxes, which is used to stack the granular materials of different particle sizes in the several material receiving boxes in sequence and lay them on the second conveyor belt to convey them to the packaging belt, so as to achieve uniform mixing of each layer of granular materials in the packaging belt.

[0008] Optionally, the screening layer is provided with three layers, and the apertures of the three screening layers decrease from top to bottom, wherein:

[0009] The pore size of the first sieve layer is 500-600 μm;

[0010] The pore size of the second sieve layer is 400-499 μm;

[0011] The pore size of the third screening layer is 300-399 μm.

[0012] Optionally, the screening layer comprises:

[0013] A support frame, wherein the support frame is cross-arranged in the transverse direction and the longitudinal direction, and the outer periphery of the support frame is mounted on the side wall of the screening tank;

[0014] A fixed mesh layer, the fixed mesh layer is installed on the top of the supporting frame;

[0015] The sieve mesh layer is connected around the periphery of the sieve mesh layer to the top periphery of the fixed mesh layer, and the aperture of the fixed mesh layer is larger than the aperture of the sieve mesh layer.

[0016] Optionally, a control valve is installed at the discharge end of each of the material receiving boxes, which is used to control the corresponding material receiving box to feed the second conveyor belt, so as to achieve uniform mixing of granular materials of different particle sizes.

[0017] Optionally, a material guide cover is installed on the outer side wall of the sifter at the discharge end of each of the discharge ports;

[0018] The cross-section of the material guide hood is a fan-shaped structure, and an arc-shaped through groove is opened on the material guide hood. One end of the arc-shaped through groove is connected to the discharge port, and the other end of the arc-shaped through groove is arranged vertically downward toward the first conveyor belt, so as to discharge the granular material discharged from the discharge port vertically downward onto the first conveyor belt.

[0019] Optionally, the material guiding cover is made of a flexible material to ensure the integrity of the particle size of the granular material.

[0020] The beneficial effects that the utility model can produce include:

[0021] The utility model provides a granular material screening integrated packaging system, which transports the screened materials to corresponding material receiving boxes by arranging a first conveyor belt, and arranges a second conveyor belt at the discharge ends of several material receiving boxes, for conveying granular materials of different particle sizes in several material receiving boxes to the packaging belt after overlapping and laying in sequence, so as to achieve uniform mixing of each layer of granular materials in the packaging belt to meet the requirements of the detection standards, and granular materials of several specifications can be arbitrarily selected to mix fracturing proppants of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a granular material screening integrated packaging system of the utility model;

[0023] Figure 2 For the utility model Figure 1 A schematic diagram of the structure of the screening layer;

[0024] Figure 3 For the utility model Figure 1 A structural schematic diagram of a material receiving box feeding the second conveyor belt;

[0025] In the figure: 1. screener, 2. vibration motor, 3. material collecting box, 4. screening trough, 5. support part, 6. screening layer, 7. discharge port, 8. first conveyor belt, 9. second conveyor belt, 10. support frame, 11. fixed mesh layer, 12. screening mesh layer, 13. control valve, 14. material guide cover, 15. arc-shaped through groove, 16. packing belt. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with embodiments, but the present invention is not limited to these embodiments.

[0027] like Figure 1-Figure 3 As shown, the utility model provides a granular material screening integrated packaging system, including a screener 1, a vibration motor 2 is installed on the screener 1, and a material receiving box 3 is installed at the discharge end of the screener 1, which is used for feeding the granular material into the feed end of the screener 1, and the screener 1 is driven by the vibration motor 2 to screen the granular material, and the screened granular material is respectively sent to the corresponding material receiving box 3 according to the particle size. The top of the screener 1 is inwardly concave to provide a screening slot 4, and the bottom of the screener 1 is provided with a support portion 5;

[0028] A number of screening layers 6 are arranged in sequence from top to bottom in the screening trough 4, and the outer periphery of each screening layer 6 is connected to the side wall of the screening trough 4. A discharge port 7 is arranged on the side wall of the screening trough 4 at the top side of each screening layer 6. The discharge port 7 extends to the outside of the sifter 1, and a first conveyor belt 8 is arranged on the outer wall of the sifter 1 at the bottom of each discharge port 7. A corresponding material receiving box 3 is installed at the discharge end of the first conveyor belt 8. A number of material receiving boxes 3 are arranged side by side in a horizontal direction, and a second conveyor belt 9 is installed at the discharge end of a number of material receiving boxes 3, which is used to stack and lay granular materials of different particle sizes in a number of material receiving boxes 3 on the second conveyor belt 9 in sequence and transport them to the packing belt 16, so as to achieve uniform mixing of each layer of granular materials in the packing belt 16.

[0029] It should be noted that: the vibration motor 2 adopts an existing structure, such as a YZS series vibration motor 2, which is fixedly installed at the bottom of the screener 1. During the vibration process, it can generate low-frequency resonance for each screening layer 6 in the screener 1, so that the screening layer 6 slowly screens the granular material; at the same time, since the support part 5 is directly placed on the ground, the vibration amplitude of the screening layer 6 can be ensured to be low, avoiding excessive vibration amplitude causing violent collisions between granular materials during the screening process, causing the particle size structure of the granular material to change, such as crushing.

[0030] In the above, reference Figure 3 As shown, by stacking and laying granular materials of different particle sizes in sequence and then conveying them to the packing belt 16, the function of mixing the granular materials without stirring is achieved, thereby avoiding the granular materials from being broken during the stirring process, which causes the structure of the granular materials to change; and, if the granular materials are not stacked and conveyed, but conveyed one by one, the second conveyor belt 9 cannot achieve the mixing effect on the materials in the packing belt 16, resulting in uneven distribution of the particle sizes of the granular materials in each layer of the packing belt 16, and unable to achieve a good mixing effect.

[0031] Furthermore, the screening layer 6 is provided with three layers, and the apertures of the three screening layers 6 decrease from top to bottom, wherein:

[0032] The pore size of the first sieving layer is 500-600 μm;

[0033] The pore size of the second sieve layer is 400-499 μm;

[0034] The pore size of the third screening layer is 300-399 μm.

[0035] As an embodiment of the utility model, the pore size of the first screening layer is set to 550μm, the pore size of the second screening layer is set to 450μm, and the pore size of the third screening layer is set to 350μm, so that after the granular material is screened, four specifications of particle size greater than or equal to 550μm, particle size of 450μm-549μm, particle size of 350μm-449μm, and particle size less than 349μm are obtained, which can be used for subsequent mixing of fracturing proppants of different specifications, and granular materials of several or all specifications can be arbitrarily selected for uniform mixing to meet the fracturing proppant specification requirements of different users.

[0036] Further, the screening layer 6 comprises:

[0037] A support frame 10, the support frame 10 is cross-arranged in the transverse direction and the longitudinal direction, and the outer periphery of the support frame 10 is fixedly mounted on the side wall of the screening tank 4;

[0038] A fixed mesh layer 11 is fixedly installed on the top of the support frame 10, and in order to prevent the fixed mesh layer 11 from squeezing the granular material during vibration, it is fixed between each intersection of the support frame 10 and the fixed mesh layer 11;

[0039] The screening mesh layer 12 is fixedly connected around the top of the fixed mesh layer 11, and the middle of the screening mesh layer 12 is in contact with the fixed mesh layer 11, so that the screening mesh layer 12 prolongs the vibration amplitude during the vibration process, thereby accelerating the screening rate, and the pore size of the fixed mesh layer 11 is larger than the pore size of the screening mesh layer 12, which is used to ensure that the small granular material after screening passes through the fixed mesh layer 11.

[0040] Furthermore, a control valve 13 is installed at the discharge end of each receiving box 3 for controlling the corresponding receiving box 3 to feed the second conveyor belt 9, so as to achieve uniform mixing of granular materials of different particle sizes.

[0041] Furthermore, a material guide hood 14 is fixedly installed on the outer wall of the screener 1 at the discharge end of each discharge port 7; wherein, the cross-section of the material guide hood 14 is a fan-shaped structure, and an arc-shaped through groove 15 is opened on the material guide hood 14, one end of the arc-shaped through groove 15 is connected to the discharge port 7, and the other end of the arc-shaped through groove 15 is arranged toward the first conveyor belt 8, which is used to discharge the granular material discharged from the discharge port 7 onto the first conveyor belt 8, which can reduce the set width of the first conveyor belt 8 and avoid part of the granular material from being discharged to the outside of the first conveyor belt 8 during discharge, causing waste of resources.

[0042] Furthermore, the material guide cover 14 is made of a flexible material to ensure the integrity of the particle size of the granular material, thereby preventing the granular material on the screener 1 from bouncing and colliding with the material guide cover 14 during shaking and discharging, causing structural deformation and damage to the granular material.

[0043] The above are only several embodiments of the utility model, and do not limit the utility model in any form. Although the utility model is disclosed as above in the preferred embodiments, it is not used to limit the utility model. Any technician familiar with this profession, without departing from the scope of the technical solution of the utility model, makes slight changes or modifications using the technical contents disclosed above, which are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A granular material screening integrated packaging system, comprising a sifter (1), the sifter (1) being equipped with a vibration motor (2), the discharge end of the sifter (1) being equipped with a material receiving box (3), for feeding granular materials into the feed end of the sifter (1), the sifter (1) being driven by the vibration motor (2) to screen the granular materials, and the screened granular materials being respectively fed into corresponding material receiving boxes (3) according to the particle size. It is characterized in that The top of the sifter (1) is inwardly recessed and provided with a sifting slot (4), and the bottom of the sifter (1) is provided with a supporting portion (5); A plurality of screening layers (6) are arranged in sequence from top to bottom in the screening trough (4), the outer periphery of each screening layer (6) is respectively connected to the side wall of the screening trough (4), a discharge port (7) is respectively arranged on the side wall of the screening trough (4) at the top side of each screening layer (6), the discharge port (7) extends to the outside of the sifter (1), a first conveyor belt (8) is respectively arranged on the outer side wall of the sifter (1) at the bottom of each discharge port (7), and the discharge end of the first conveyor belt (8) is installed with the corresponding material receiving box (3); A plurality of the material receiving boxes (3) are arranged side by side in a horizontal direction, and a second conveyor belt (9) is provided at the discharge end of the plurality of the material receiving boxes (3), for stacking granular materials of different particle sizes discharged from the plurality of the material receiving boxes (3) in sequence on the second conveyor belt (9) and conveying them to the packing belt (16), so as to achieve uniform mixing of each layer of granular materials in the packing belt (16).

2. A granular material screening integrated packaging system according to claim 1, It is characterized in that The screening layer (6) is provided with three layers, and the apertures of the three screening layers (6) decrease from top to bottom, wherein: The pore size of the first sieve layer is 500-600 μm; The pore size of the second sieve layer is 400-499 μm; The pore size of the third screening layer is 300-399 μm.

3. A granular material screening integrated packaging system according to claim 1, It is characterized in that The screening layer (6) comprises: A support frame (10), the support frame (10) being arranged crosswise in the transverse direction and the longitudinal direction, and the outer periphery of the support frame (10) being mounted on the side wall of the screening tank (4); A fixed mesh layer (11), the fixed mesh layer (11) being installed on the top of the supporting frame (10); A screening mesh layer (12), wherein the periphery of the screening mesh layer (12) is connected to the periphery of the top of the fixed mesh layer (11), and the aperture of the fixed mesh layer (11) is larger than the aperture of the screening mesh layer (12).

4. A granular material screening integrated packaging system according to claim 1, It is characterized in that A control valve (13) is installed at the discharge end of each of the material receiving boxes (3) for controlling the corresponding material receiving box (3) to feed the second conveyor belt (9) so as to achieve uniform mixing of granular materials of different particle sizes.

5. A granular material screening integrated packaging system according to claim 1, It is characterized in that A material guide cover (14) is installed on the outer wall of the sifter (1) at the discharge end of each of the discharge ports (7); The cross section of the material guide cover (14) is a fan-shaped structure. The material guide cover (14) is provided with an arc-shaped through groove (15). One end of the arc-shaped through groove (15) is connected to the discharge port (7), and the other end of the arc-shaped through groove (15) is arranged toward the first conveyor belt (8) for discharging the granular material discharged from the discharge port (7) onto the first conveyor belt (8).

6. A granular material screening integrated packaging system according to claim 5, It is characterized in that The material guide cover (14) is made of a flexible material and is used to ensure that the particle size of the granular material is intact.

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