Small distributor

Abstract

The utility model provides a small distributor which comprises a barrel and a distributing device, and a feeding pipeline is arranged on the barrel; the material distributing device comprises a middle pipe and a plurality of material distributing pipes, the middle pipe is connected with the feeding pipeline, one end of each material distributing pipe is connected with the middle pipe, and the material distributing pipes extend towards the position away from the middle pipe in the direction perpendicular to the middle pipe; a plurality of through holes are formed in the material distribution pipe in the length direction of the material distribution pipe; a plurality of through holes are formed in the two sides of each material distribution pipe in the length direction of the material distribution pipe, and the through holes in the two adjacent material distribution pipes are oppositely formed in the opposite faces of the two adjacent material distribution pipes. According to the distributor, the material distributing device and the flow dividing device are arranged, so that materials are slowly and uniformly dispersed, the problems of non-uniform gas-liquid distribution and non-uniform temperature distribution are effectively solved, and small-scale continuous production can be met.

Description

Technical Field

[0001] The present application relates to the field of chemical engineering and technology, and in particular to a small distributor. Background Art

[0002] Fixed bed tubular reactor is a device used for gas-liquid-solid and liquid-liquid-solid reactions, in which a large number of reactor tubes are arranged in a row. The reactants flow in the tubes and react with the catalyst bed.

[0003] At present, the distributor used in conjunction with the fixed-bed tubular reactor is also an industrial-grade distributor, which is suitable for factory-scale production operations due to its high device capacity and large flow rate. Due to the complex structure and large volume of the industrial-grade distributor equipment, it is difficult to scale down the same proportion for processing, so as to be used as a distributor under small flow conditions of small and pilot scales. Not only that, when the industrial-grade distributor after being scaled down is used for small flow production, problems such as uneven gas-liquid distribution and uneven temperature distribution will occur. Therefore, the present application provides a small-scale distributor that can meet small-scale continuous production. Utility Model Content

[0004] To solve the above problems, the present application provides a small distributor. The distributor performs two-stage distribution of the material entering the cylinder by setting a material distribution device and a flow distribution device, so that the material can be slowly and evenly dispersed into the tube array, effectively solving the problems of uneven gas-liquid distribution and uneven temperature distribution, and can meet small-scale continuous production.

[0005] The present application provides a small distributor, comprising:

[0006] A cylinder, a material distribution device and a plurality of tubes, wherein the plurality of tubes are arranged in the cylinder at intervals along the vertical direction, and a feed pipe is arranged on the cylinder;

[0007] The material distribution device comprises a middle pipe and a plurality of material distribution pipes, wherein the middle pipe is connected to the feed pipe, one end of each material distribution pipe is connected to the middle pipe, and each material distribution pipe extends in a direction perpendicular to the middle pipe toward a position away from the middle pipe;

[0008] The material distribution pipe is provided with a plurality of through holes along the length direction of the material distribution pipe, and the positions of the through holes correspond to the position of at least one of the array of tubes;

[0009] A plurality of through holes are provided on both sides of the material distribution pipe along the length direction of the material distribution pipe, and on opposite surfaces of two adjacent material distribution pipes, the through holes on the two material distribution pipes are arranged opposite to each other.

[0010] Optionally, the diameters of the plurality of through holes increase sequentially along a direction from a middle position to an end position of the material distribution pipe.

[0011] Optionally, the plurality of material distribution pipes are all arranged at the end of the middle pipe, and the plurality of material distribution pipes have the same height.

[0012] Optionally, a plurality of the distribution pipes are staggered and arranged on the intermediate pipe along the length direction of the intermediate pipe.

[0013] Optionally, a diverter plate is further provided in the cylinder, and at least one circle of grooves is formed on the diverter plate, and each circle of the grooves is formed with a plurality of diverter holes, and the positions of the diverter holes correspond to the position of at least one of the through holes.

[0014] Optionally, the angle between the groove wall of the groove and the first plane is 40° to 50°, and the first plane is perpendicular to the disk surface of the diverter disk.

[0015] Optionally, the shapes of the grooves include circular, square and polygonal.

[0016] Optionally, the diameter of the diversion hole is 0.2 mm to 0.8 mm.

[0017] Optionally, a distance between a side of the diverter plate facing the distribution pipe and the distribution pipe is less than 2 cm.

[0018] Optionally, when more than two circles of the grooves are provided, the size of each circle of the grooves is different, and in two adjacent grooves, the groove with a larger size surrounds the groove with a smaller size.

[0019] This application has at least the following beneficial effects:

[0020] 1. The present application provides a small distributor, in which a material distribution device is arranged in a cylinder, so that the gas-liquid mixture material entering along the feed pipe enters the middle pipe together, and then flows downward along the middle pipe into multiple material distribution pipes, and finally the liquid material flows out along the transverse through holes on both sides of the material distribution pipe, and the gas material is sprayed out laterally along the through holes and evenly fills the entire cylinder, so as to achieve a pre-distribution effect, realize uniform distribution of materials and temperature, and reduce the influence of the inner and outer gas phase vortex on the material distribution;

[0021] 2. The present application sets a flow distribution plate in the cylinder, and the flow distribution plate is also provided with grooves and flow distribution holes, so that the material dispersed by the material distribution device flows into the groove to form a horizontal liquid surface, and the material gradually flows into the flow distribution hole along the groove, and finally flows out drop by drop along the flow distribution hole, so as to perform secondary distribution of the material, further improve the distribution effect, and make the material dispersed more evenly. This distribution method is more suitable for small flow production;

[0022] 3. The small distributor has a simple structure and is easy to install, which can well meet the needs of small-scale continuous production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 It is a schematic diagram of the overall structure of the small distributor proposed in the embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the structure of the tube array proposed in the embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of the structure of the material distribution device proposed in the embodiment of the present application. Figure 1 ;

[0027] Figure 4 This is a schematic diagram of the structure of the material distribution device proposed in the embodiment of the present application. Figure 2 ;

[0028] Figure 5 This is a schematic diagram of the structure of the diverter disk proposed in the embodiment of the present application. Figure 1 ;

[0029] Figure 6 This is a schematic diagram of the structure of the diverter disk proposed in the embodiment of the present application. Figure 2 .

[0030] Description of reference numerals:

[0031] 1. Cylinder;

[0032] 11. material distribution device; 111. intermediate pipe; 112. material distribution pipe; 1121. through hole;

[0033] 12. Listing;

[0034] 13. Feed pipeline;

[0035] 14. diverter plate; 141. groove; 1411. diverter hole; 142. first plane;

[0036] 15. Head sealing. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] In the drawings, the size of the constituent elements, the thickness of the layer or the area may be exaggerated for the sake of clarity. Therefore, any implementation of the present disclosure is not necessarily limited to the size shown in the drawings, and the shapes and sizes of the components in the drawings do not reflect the true proportions. In addition, the drawings schematically show ideal examples, and any implementation of the present disclosure is not limited to the shapes or values ​​shown in the drawings.

[0039] In the related art, in the field of chemical engineering and technology, a fixed bed tubular reactor is a reactor in which catalyst particles are loaded in a fixed bed, in which the flow and reaction of reactants are achieved through multiple parallel tubes (usually arranged in parallel). The reactants (gas or liquid) flow in the tubes, contact with the catalyst bed and react. The fixed bed tubular reactor is mainly composed of the following parts:

[0040] Reactor body: the space that accommodates the catalyst bed and tube arrays;

[0041] Feed system: used to introduce reactants into the reactor;

[0042] Reactant bed: a fixed bed composed of catalyst particles;

[0043] Tube array: multiple parallel tubular structures for the flow and reaction of reactants;

[0044] Waste gas emission system: used to discharge the gas or liquid after the reaction.

[0045] Fixed bed tubular reactors are widely used in gas-solid phase reaction and liquid-solid phase reaction processes, such as synthetic ammonia industry, water treatment, polymer catalysis, oxidation reaction, esterification reaction, etc. In addition, it is also commonly used in the preparation of chemicals, catalytic processing of petroleum products, etc.

[0046] For gas-liquid-solid, liquid-liquid-solid and other reactions, whether the gas-liquid distribution inside the tubes is uniform seriously affects the chemical reaction effect, the stable operation of the test device, and the safety of the operators. For the factory-scale reaction equipment in the traditional petrochemical industry, the equipment has high production capacity and large flow, and there are many mature industrial-grade liquid distributors to choose from. In addition, due to the large size of industrial-grade equipment, the complex structure of the liquid distributor has installation and disassembly conditions inside its reactor.

[0047] However, for small-scale and pilot-scale tubular reactors, due to low production capacity, small feed, and small equipment volume, industrial-grade liquid distributors cannot be adapted in terms of flow rate and cannot be installed in terms of equipment volume; and due to the structure and volume of industrial-grade distributors, it is also difficult to scale down the industrial-grade distributors for processing, so as to be used as distributors under small flow conditions of small-scale and pilot-scale. Therefore, it is necessary to seek a liquid distributor that can meet the needs of small-scale continuous production of tubular reactors. The existing distribution technology solutions of distributors still have the following problems in actual operation:

[0048] (1) Due to equipment volume limitations, the installation of industrial distributors is difficult to ensure;

[0049] (2) For gas-liquid-solid reactions, the distribution method similar to nozzle atomization will be affected by the gas phase feed, causing the material to shift and resulting in uneven distribution of materials in the tube array, causing uneven temperature in the tube and temperature fluctuations.

[0050] Based on the above problems, an embodiment of the present application proposes a small distributor.

[0051] The small distributor provided in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0052] See also Figure 1 , an embodiment of the present application provides a small distributor, comprising:

[0053] The cylinder 1 and the material distribution device 11, the cylinder 1 is provided with a feed pipe 13;

[0054] The material distribution device 11 includes an intermediate pipe 111 and a plurality of material distribution pipes 112. The intermediate pipe 111 is connected to the feed pipe 13. One end of the material distribution pipe 112 is connected to the intermediate pipe 111. The material distribution pipe 112 extends in a direction perpendicular to the intermediate pipe 111 toward a position away from the intermediate pipe 111.

[0055] The material distribution pipe 112 is provided with a plurality of through holes 1121 along the length direction of the material distribution pipe 112;

[0056] A plurality of through holes 1121 are provided on both sides of the material distribution pipe 112 along the length direction of the material distribution pipe 112 , and on opposite surfaces of two adjacent material distribution pipes 112 , the through holes 1121 on the two material distribution pipes 112 are arranged opposite to each other.

[0057] It should be noted that when using the above-mentioned small distributor, the gas phase material and the liquid phase material flow downward along the feed pipe into the intermediate pipe 111 together, and the material then flows downward along the intermediate pipe 111 into multiple distribution pipes 112, wherein the mass of the material flowing into each distribution pipe 112 is the same to achieve uniform distribution.

[0058] By setting the position of the through hole 1121, the mixed gas-liquid / liquid-liquid enters the cavity at the lower part of the intermediate tube 111 from the feed pipe 13, and evenly enters the distribution tube 112; the material is discharged laterally from the transverse through holes 1121 at different positions on the distribution tube 112, and the arrangement rules of the intermediate tubes 111 and the through holes 1121 can play a role of pre-distribution, so that the discharged material (liquid, gas) can greatly reduce the influence of turbulence in the closed space (cylinder 1), so that the material and temperature distribution are more uniform.

[0059] In the examples of this application, see Figure 1 A plurality of tubes 12 are arranged in the cylinder 1 , and the plurality of tubes 12 are arranged in the cylinder 1 at intervals along the vertical direction, and the position of the through hole 1121 corresponds to the position of at least one tube 12 .

[0060] When in use, the material in the distribution pipe 112 flows out into the array of tubes 12 along the through holes 1121 on both sides of the distribution pipe 112 , and the material flows into the array of tubes 12 for the next reaction.

[0061] In the examples of this application, see Figure 1 The cylinder 1 is cylindrical, with a diameter of 300 mm, a height of 1500 mm to 2100 mm, and a feed flow rate of 5 L / h to 50 L / h. The cylinder 1 is small in size, more suitable for small-scale production, small in footprint, and easy to install.

[0062] In the examples of this application, see Figure 1 and Figure 2 The number of the tubes 12 is 20 to 100, and the number of the tubes 12 can be selected according to production and is not specifically limited in the embodiments of the present application.

[0063] In the examples of this application, see Figure 1 One end of the cylinder 1 is fixedly connected with a head 15, the diameter of the head 15 is the same as the diameter of the cylinder 1, which is also 300 mm, and the feed pipe 13 is fixedly installed in the head 15, and one end of the feed pipe 13 passes through the head 15. When in use, the material is fed into the cylinder 1 along the feed pipe 13 to facilitate feeding.

[0064] In the examples of this application, see Figure 2 The tubes 12 are arranged in a hexagonal pattern in the cylinder 1, so that the arrangement of the tubes 12 is more uniform.

[0065] It should be noted that the plurality of tubes 12 form a plurality of hexagons of different sizes, wherein a larger number of tubes 12 surround a smaller number of tubes 12 .

[0066] In the examples of this application, see Figure 2 The tube array 12 is a cylindrical hollow tube.

[0067] In the examples of this application, see Figure 3 The diameter of the middle pipe 111 is larger than that of the distribution pipe 112, ensuring that a sufficient amount of material flows into the middle pipe 111 so that each distribution pipe 112 can be distributed with the same quality of material, thereby making the material distribution more uniform.

[0068] In the examples of this application, see Figure 3 and Figure 4 The middle tube 111 and the distribution tube 112 are both cylindrical hollow tubes. The material of the center tube and the distribution tube 112 only needs to be corrosion-resistant and high-temperature-resistant, and is not specifically limited in the embodiments of the present application.

[0069] In the embodiment of the present application, the connection methods between the intermediate pipe 111 and the feed pipe include but are not limited to welding, threaded connection, clamp, flange connection and ferrule connection.

[0070] In the examples of this application, see Figure 4 The diameter of the intermediate tube 111 is larger than the diameter of the feed pipe 13 , and one end of the intermediate tube 111 wraps one end of the feed pipe 13 to ensure that the material in the feed pipe 13 can flow into the intermediate tube 111 .

[0071] It should be noted that the connection method between the intermediate tube 111 and the feed pipe 13 can be welding or clamping, which is not specifically limited in the embodiment of the present application.

[0072] In the embodiment of the present application, the way in which one end of the distribution pipe 112 is connected to the intermediate pipe 111 includes but is not limited to welding, clamping, and threaded connection, which is not specifically limited in the embodiment of the present application.

[0073] In the examples of this application, see Figure 3 The distribution pipe 112 extends in a direction perpendicular to the middle pipe 111 toward a position away from the middle pipe 111, that is, each distribution pipe 112 is also arranged vertically relative to the array tubes 12, so that the mass of the material flowing out of the through hole 1121 on the distribution pipe 112 is the same, and the mass of the material flowing into the array tube 12 corresponding to the through hole 1121 is also the same, which is conducive to evenly distributing the material to the array tube 12.

[0074] In the examples of this application, see Figure 4 , multiple through holes 1121 are provided on both sides of the material distribution pipe 112 along the length direction of the material distribution pipe 112, and on the opposite surfaces of two adjacent material distribution pipes 112, the through holes 1121 on the two material distribution pipes 112 are arranged opposite to each other. This prevents the material from being concentrated in a part of the material distribution pipe 112, and further improves the uniformity of material dispersion. At the same time, the through holes 1121 are provided horizontally, which can reduce the influence of the gas phase on the liquid phase material conveying path, reduce the deviation during the liquid phase material conveying, and make the material flow into the tube array 12 evenly.

[0075] In the examples of this application, see Figure 3 , the diameters of the plurality of through holes 1121 increase in sequence along the direction from the middle position to the end position of the material distribution pipe 112. As the number of tubes 12 in the direction from the middle position to the end position of the material distribution pipe 112 gradually increases, the diameters of the through holes 1121 are also set to increase in sequence, so that when the number of tubes 12 increases, one through hole 1121 can correspond to a plurality of tubes 12, ensuring that the material flows into each tube 12 evenly.

[0076] It should be noted that the through hole 1121 is formed in an arc shape on the material distribution pipe 112 along the length direction of the material distribution pipe 112, so that the gas and liquid materials can flow more smoothly when passing through, and the fluid resistance is smaller, thereby improving the conveying efficiency.

[0077] In the embodiment of the present application, the aperture of the through hole 1121 ranges from 0.3 mm to 2 mm.

[0078] In the examples of this application, see Figure 4 The multiple material distribution pipes 112 are all arranged at the ends of the intermediate pipe 111, and the heights of the multiple material distribution pipes 112 are the same, that is, the multiple material distribution pipes 112 are located on the same plane, so that the materials can be initially distributed in the same plane to avoid the materials being concentrated in some areas.

[0079] It should be noted that the embodiment of the present application uses 6 distribution pipes 112, and the angle between two adjacent distribution pipes 112 is 60°. The multiple distribution pipes 112 are arranged in a hexagonal shape, which is consistent with the shape of the array tubes 12, which is conducive to accurate distribution of materials.

[0080] In the embodiment of the present application, a plurality of material distribution pipes 112 may be staggered and disposed on the middle pipe 111 along the length direction of the middle pipe 111 .

[0081] It should be noted that, in the embodiment of the present application, a plurality of material distribution pipes 112 may be staggered and fixed on the middle pipe 111 , and the heights of two adjacent material distribution pipes 112 are different to achieve primary distribution of the material.

[0082] In the examples of this application, see Figure 1 and Figure 5 , small distributors also include:

[0083] A diverter plate 14 is further disposed in the cylinder 1 . The diverter plate 14 is provided with at least one circle of grooves 141 . Each circle of grooves 141 is provided with a plurality of diverter holes 1411 . The positions of the diverter holes 1411 correspond to the position of at least one through hole 1121 .

[0084] By setting the diverter plate 14, the gas material flowing out along the through hole 1121 can evenly fill the entire head 15, and the liquid material is collected in each groove 141 of the distribution plate. Under the same pressure difference, the gas and liquid evenly enter each tube 12 of the tube reactor through the diverter hole 1411 on the diverter plate 14 and start the reaction. By setting the diverter plate 14 and the diverter hole 1411, the material flow speed can be slowed down, so that the material distribution can be more accurate and uniform.

[0085] In the examples of this application, see Figure 5 The diverter plate 14 is in the shape of a disc, and the surface of the diverter plate 14 is smooth and flat, so as to reduce the resistance during the flow of gas and liquid and prevent the material from remaining on the diverter plate 14.

[0086] In the examples of this application, see Figure 1 The diameter of the diverter plate 14 is the same as the diameter of the cylinder 1. The diverter plate 14 is fixedly installed on the inner wall of the cylinder 1. When installing the diverter plate 14, it is necessary to ensure that the diverter plate 14 and the feed point (i.e., the intermediate pipe 111) are located in the same space along the longitudinal direction, and the circumferential side wall of the diverter plate 14 fits closely with the inner wall of the cylinder 1, so that the material only enters the cylinder along the intermediate pipe 111, and finally flows out to the tube array 12 only along the diverter hole 1411.

[0087] In the embodiment of the present application, the angle between the groove wall of the groove 141 and the first plane 142 is 40° to 50°, and the first plane 142 is perpendicular to the disk surface of the diverter disk 14. The groove 141 is used to receive part of the material flowing out along the through hole 1121. By setting the degree of inclination of the groove wall of the groove 141, the material in the groove 141 slowly flows into the diverter hole 1411, avoiding the situation where the material flow rate is too fast and the material cannot be secondary distributed.

[0088] In the examples of this application, see Figure 5 Preferably, the angle between the groove wall of the groove 141 and the first plane 142 is 45°.

[0089] In the embodiment of the present application, the shapes of the groove 141 include circle, square and polygon.

[0090] In the embodiment of the present application, the shape of the groove 141 is the same as the shape formed by the array of tubes 12 , so that the through hole 1121 corresponds to the array of tubes 12 .

[0091] It should be noted that the number of circles of the grooves 141 is the same as the number of circles formed by the tube array 12 .

[0092] In the examples of this application, see Figure 6 Further preferably, the shape of the groove 141 is also hexagonal, so that the shape of the groove 141 is the same as the shape surrounded by the tube array 12.

[0093] In the examples of this application, see Figure 5 When more than two circles of grooves 141 are provided, the size of each circle of grooves 141 is different, and in two adjacent grooves 141, the groove 141 with a larger size surrounds the groove 141 with a smaller size.

[0094] When the tubes 12 are arranged, the size of each circle of tubes 12 increases successively along the direction from the center line of the cylinder 1 to the side wall of the cylinder 1, so the size of the grooves 141 also increases successively. Each circle of grooves 141 corresponds to each circle of tubes 12, so that the material in the through holes 1121 can accurately flow into the tubes 12.

[0095] In the embodiment of the present application, the diameter of the diversion hole 1411 is 0.2 mm to 0.8 mm.

[0096] It should be noted that the diameter of the diverter hole 1411 is determined according to the feed flow rate in the cylinder 1 and the number of tube arrays 12. By controlling the diameter of the diverter hole 1411, the flow rate of the material flowing out of the diverter hole 1411 is controlled to achieve secondary distribution of the material.

[0097] In the examples of this application, see Figure 6 The diverter hole 1411 vertically passes through the diverter plate 14, and the material flowing out of the through hole 1121 flows downward into the diverter hole 1411, and the material in the groove 141 also flows into the diverter hole 1411. For liquid materials, affected by the surface tension of the liquid, the liquid material will first fill the diverter hole 1411, and then slowly drip into the array tube 12 along the diverter hole 1411, realizing secondary distribution and making the material distribution more uniform.

[0098] In the examples of this application, see Figure 1 , the distance between the side of the diverter plate 14 facing the material distribution pipe 112 and the material distribution pipe 112 is less than 2 cm, and the distance between the side of the diverter plate 14 facing the array tubes 12 and the side of the array tubes 12 close to the diverter plate 14 is less than 5 cm. Under this distance, the material flowing out of the through hole 1121 can accurately flow into the diverter hole 1411 and the groove 141 on the diverter plate 14 to limit the conveying path of the material.

[0099] In the embodiment of the present application, the small distributor uses multiple multi-point thermocouples during use, and the detection points are distributed at different height levels in the cylinder 1 to ensure that there are at least ≥ 3 thermocouple detection points on the same level in the cylinder 1.

[0100] After verification under the above-mentioned actual working conditions, the temperature inside the cylinder 1 changes evenly and stably, the temperature difference on the same horizontal plane is ≤2°C, and the temperature distribution is in good condition.

[0101] In summary, the small distributor provided in the present application can be well applied to the fields of chemical engineering and technology under small-scale and pilot-scale tests. By designing the shape and structure of the components, the present application enables the distributor to adapt to the characteristics of small operating space and low operating flow inside a small fixed bed reactor. It can directly and effectively improve the uniform distribution effect of the liquid-phase material in the tubes inside the tube reactor, solve the reactor distribution problem under small flow conditions, and reduce the problems of uneven distribution of reactor bed temperature and fluctuating reaction efficiency caused by feed quantity limitation.

[0102] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0103] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0104] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0105] The above is a detailed introduction to a small distributor provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A small distributor, characterized in that: include: A cylinder (1) and a material distribution device (11), wherein the cylinder (1) is provided with a feed pipe (13); The material distribution device (11) comprises an intermediate pipe (111) and a plurality of material distribution pipes (112), wherein the intermediate pipe (111) is connected to the feed pipe (13), one end of each material distribution pipe (112) is connected to the intermediate pipe (111), and each material distribution pipe (112) extends in a direction perpendicular to the intermediate pipe (111) toward a position away from the intermediate pipe (111); The material distribution pipe (112) is provided with a plurality of through holes (1121) along the length direction of the material distribution pipe (112); A plurality of through holes (1121) are provided on both sides of the distribution tube (112) along the length direction of the distribution tube (112), and on opposite surfaces of two adjacent distribution tubes (112), the through holes (1121) on the two distribution tubes (112) are arranged opposite to each other.

2. The small distributor according to claim 1, characterized in that: Along the direction from the middle position to the end position of the distribution pipe (112), the diameters of the plurality of through holes (1121) increase sequentially.

3. The small distributor according to claim 1, characterized in that: The plurality of material distribution pipes (112) are all arranged at the end of the middle pipe (111), and the plurality of material distribution pipes (112) have the same height.

4. The small distributor according to claim 1, characterized in that: The plurality of material distribution pipes (112) are staggered and arranged on the intermediate pipe (111) along the length direction of the intermediate pipe (111).

5. The small distributor according to any one of claims 1 to 4, characterized in that: A flow diverter plate (14) is also provided in the cylinder (1), and at least one circle of grooves (141) is provided on the flow diverter plate (14), and each circle of the grooves (141) is provided with a plurality of flow diverter holes (1411), and the positions of the flow diverter holes (1411) correspond to the position of at least one of the through holes (1121).

6. The small distributor according to claim 5, characterized in that: The angle between the groove wall of the groove (141) and the first plane (142) is 40° to 50°, and the first plane (142) is perpendicular to the disk surface of the diverter disk (14).

7. The small distributor according to claim 5, characterized in that: The shapes of the groove (141) include circular, square and polygonal.

8. The small distributor according to claim 5, characterized in that: The diameter of the diversion hole (1411) is 0.2 mm to 0.8 mm.

9. The small distributor according to claim 5, characterized in that: The distance between a side of the flow distribution plate (14) facing the distribution pipe (112) and the distribution pipe (112) is less than 2 cm.

10. The small distributor according to claim 5, characterized in that: When more than two circles of the grooves (141) are provided, the size of each circle of the grooves (141) is different, and in two adjacent grooves (141), the groove (141) with a larger size surrounds the groove (141) with a smaller size.

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