CN220097819U

CN220097819U - Pneumatic conveying device and production equipment

Info

Publication number: CN220097819U
Application number: CN202321295304.6U
Authority: CN
Inventors: 汤玉兰; 叶志
Original assignee: Anhui Jiabaoli Technology Material Co ltd
Current assignee: Anhui Jiabaoli Technology Material Co ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-11-28
Anticipated expiration: 2033-05-26

Abstract

The utility model relates to a pneumatic conveying device and production equipment. The pneumatic conveying device comprises a feeding bin, a first dust remover, a first sending tank, a material conveying pipeline, a gas-solid separation bin, a dust collecting pipeline and a second dust remover; the first dust remover is arranged on the feeding bin, the first dust remover is a pulse dust remover, the feeding bin, the first sending tank and the material conveying pipeline are sequentially communicated, the gas-solid separation bin is provided with a feeding hole, a discharging hole and a gas return hole which are communicated, the number of the gas-solid separation bins is multiple, the feeding holes of the multiple gas-solid separation bins are respectively communicated with the material conveying pipeline, the gas return holes of the multiple gas-solid separation bins are respectively communicated with the dust collecting pipeline, and the dust collecting pipeline is communicated with the second dust remover. The dust in the gas-solid separation bins of the pneumatic conveying device can be gathered to the dust collecting pipeline and subjected to dust removal treatment, a plurality of dust removers are not required to be arranged corresponding to the mixing devices, and the number of the required dust removers can be reduced.

Description

Pneumatic conveying device and production equipment

Technical Field

The utility model relates to the technical field of material conveying equipment, in particular to a pneumatic conveying device and production equipment.

Background

In addition to the various mechanical conveying devices, the powder can be conveyed by means of a fluid according to the fluidization principle of the solid. Depending on the fluid used, fluid delivery can be divided into pneumatic delivery and hydraulic delivery. Wherein, pneumatic conveying is classified into dilute phase conveying and dense phase conveying according to the concentration of solid phase in the gas flow.

In the production process of the real stone paint, the color sand materials are conveyed into a sand bin on the color mixing kettle in a pneumatic conveying mode. The real stone paint production plant is usually equipped with 1m ³ ～5m ³ Or 6m ³ ～10m ³ And a plurality of production equipment with equal yield. Taking the annual capacity of 10 ten thousand to 20 ten thousand tons as an example, about 30 to 45 color mixing kettles are provided, and 30 to 45 sand bins are matched on the color mixing kettles. The color sand is usually 10-200 meshes, a large amount of dust can be generated in the conveying process, and in the traditional production, each sand bin is matched with one dust removing device, so that 30-45 dust removing devices are needed in total. The investment cost of the dust removing equipment is high.

Disclosure of Invention

Based on the above, it is necessary to provide a pneumatic conveying device and production equipment, so as to solve the problem that the investment cost of equipment is high because each sand bin of the traditional equipment is matched with one dust removing equipment.

One of the purposes of the utility model is to provide a pneumatic conveying device, which comprises the following scheme:

a pneumatic conveying device comprises a feeding bin, a first dust remover, a first sending tank, a material conveying pipeline, a gas-solid separation bin, a dust collecting pipeline and a second dust remover;

the first dust remover is a pulse dust remover, the first dust remover is arranged on the feeding bin, the first sending tank and the material conveying pipeline are sequentially communicated, the gas-solid separation bin is provided with a plurality of communicated feed inlets, discharge outlets and air return openings, the number of the gas-solid separation bins is multiple, the feed inlets of the gas-solid separation bin are respectively communicated with the material conveying pipeline, the air return openings of the gas-solid separation bin are respectively communicated with the dust collecting pipeline, and the dust collecting pipeline is communicated with the second dust remover.

In one embodiment, the feed inlet and the return air inlet are located above the discharge outlet.

In one of the embodiments of the present utility model, a first pneumatic reversing valve is arranged between the feeding hole and the material conveying pipeline.

In one of the embodiments of the present utility model, and a rotary valve is arranged at the discharge hole.

In one embodiment, the air return ports of the plurality of gas-solid separation bins are communicated with the dust collection pipeline through an air return pipeline, and an on-off valve is arranged on the air return pipeline.

In one embodiment, the second dust collector is a pulse dust collector.

In one embodiment, the pneumatic conveying apparatus further comprises a second sending tank, wherein an inlet of the second sending tank is communicated with the second dust remover, and an outlet of the second sending tank is communicated with the material conveying pipeline.

In one embodiment, a second pneumatic reversing valve is arranged between the second sending tank and the material conveying pipeline.

Another object of the utility model is to provide a production device, the solution is as follows:

the production equipment comprises the pneumatic conveying device and the mixing devices, wherein the mixing devices are multiple, and the mixing devices are communicated with the discharge holes of the gas-solid separation bins one by one.

In one embodiment, the mixing device includes a mixing chamber and an agitator disposed in the mixing chamber.

Compared with the traditional scheme, the pneumatic conveying device and the production equipment have the following beneficial effects:

above-mentioned pneumatic conveying device and production facility carry the powder through throwing the feed bin to first sending jar in, carry out pneumatic conveying through first sending jar, air and powder are through material conveying pipeline input a plurality of gas-solid separation warehouses in, wherein the powder of macroparticle is in the mixing arrangement through the discharge gate input under the effect of gravity, produces pulse compressed air through the first dust remover that sets up on throwing the feed bin, and the dust in a plurality of gas-solid separation warehouses is blowback, gets into dust collecting pipeline through the return air mouth to carry out the dust removal in the dust collecting pipeline is carried to the second dust remover. Therefore, dust in the gas-solid separation bins can be collected into the dust collection pipeline and subjected to dust removal treatment, a plurality of dust collectors are not required to be arranged corresponding to the mixing devices, the number of the required dust collectors can be reduced, the equipment investment cost is saved, and the space for arranging the dust collectors is also reduced.

Drawings

FIG. 1 is a schematic diagram of a production facility according to an embodiment;

FIG. 2 is a schematic diagram showing the connection relationship between a gas-solid separation bin and a mixing device in the production equipment shown in FIG. 1;

FIG. 3 is a schematic diagram showing the connection relationship among the pneumatic conveying device, the feeding bin and the first dust collector in the production equipment shown in FIG. 1;

fig. 4 is a schematic diagram showing a connection relationship among the second dust collector, the second sending tank and the dust removing fan in the production device shown in fig. 1.

Reference numerals illustrate:

10. production equipment; 100. pneumatic conveying device; 101. a feeding bin; 102. a first dust collector; 103. a first sending tank; 104. material conveying a pipe; 105. gas-solid a separation bin; 1051. feeding material a mouth; 1052. a discharge port; 1053. an air return port; 106. a dust collection pipe; 107. second one a dust remover; 108. a first air-operated directional valve; 109. a feed conduit; 110. an air return pipeline; 111. an on-off valve; 112. a second transmitting tank; 113. a second pneumatic reversing valve; 114. a circulation pipe; 115. a dust removal fan; 116. rotating the valve; 200. a mixing device; 201. a mixing chamber; 202. a stirrer.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed on" 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. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be interpreted as indicating or implying a relative importance or order of such features.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only, and are not intended to limit the utility model. The term "and/or" as used herein includes one or more any and all combinations of the individual listed items.

Referring to fig. 1, a production apparatus 10 according to an embodiment of the present utility model includes a pneumatic conveying apparatus 100 and a mixing apparatus 200.

The pneumatic conveying device 100 comprises a feeding bin 101, a first dust remover 102, a first sending tank 103, a material conveying pipeline 104, a gas-solid separation bin 105, a dust collecting pipeline 106 and a second dust remover 107.

The first dust remover 102 is arranged on the feeding bin 101, and the first dust remover 102 is a pulse dust remover. The feeding bin 101, the first sending tank 103 and the material conveying pipeline 104 are sequentially communicated. The feeding bin 101 is used for feeding powder, and after manual bag opening or ton bag opening, the powder is fed into the feeding bin 101. The powder in the feeding bin 101 is fed into the first delivery tank 103, and the air pressure generated by the first delivery tank 103 feeds the powder into the material conveying pipe 104. For example, the first delivery tank 103 is provided with a blower that conveys air and powder by forming a positive pressure into the material conveying pipe 104.

As shown in fig. 2, the gas-solid separation cartridge 105 has a feed inlet 1051, a discharge outlet 1052, and a return air inlet 1053, which are in communication. Wherein, feed inlet 1051 communicates with material conveying pipeline 104, and first delivery tank 103 is through pneumatic conveying with the powder through material conveying pipeline 104 and feed inlet 1051 input gas-solid separation storehouse 105. Wherein, the large-particle powder is output from the gas-solid separation bin 105 through the discharge hole 1052 under the action of gravity. The return air port 1053 is connected to the dust collecting pipe 106, and the dust collecting pipe 106 is connected to the second dust collector 107. The dust left in the gas-solid separation bin 105 is back blown by the pulse compressed air of the first dust remover 102, enters the dust collection pipeline 106 through the air return port 1053, and is conveyed to the second dust remover 107 through the dust collection pipeline 106 for dust removal.

The number of the gas-solid separation bins 105 is plural. The feed inlets 1051 of the plurality of gas-solid separation bins 105 are respectively communicated with the material conveying pipeline 104. Air and powder in the material conveying pipe 104 are fed into a plurality of gas-solid separation bins 105. The air return ports 1053 of the plurality of gas-solid separation bins 105 are respectively communicated with the dust collecting pipe 106.

The mixing devices 200 are multiple, and the mixing devices 200 are in one-to-one communication with the discharge ports 1052 of the gas-solid separation bins 105. The large-particle powder falls into the mixing device 200 through the discharge port 1052 by gravity.

The production equipment 10 conveys powder into the first conveying tank 103 through the feeding bin 101, pneumatic conveying is performed through the first conveying tank 103, air and powder are conveyed into the plurality of gas-solid separation bins 105 through the material conveying pipeline 104, large-particle powder is conveyed into the mixing device 200 through the discharging hole 1052 under the action of gravity, pulse compressed air is generated through the first dust remover 102 arranged on the feeding bin 101, dust in the plurality of gas-solid separation bins 105 is reversely blown, and the dust enters the dust collecting pipeline 106 through the air return hole 1053 and is conveyed into the second dust remover 107 through the dust collecting pipeline 106 for dust removal. Thus, the dust in the gas-solid separation bins 105 can be collected into the dust collection pipeline 106 and subjected to dust removal treatment, a plurality of dust removers are not required to be arranged corresponding to the mixing devices 200, the number of the required dust removers can be reduced, and the equipment investment cost is saved.

In addition, in the traditional mode that each sand bin is matched with one dust removing device, the dust removing devices are required to be designed according to the maximum flow velocity of the gas transmission quantity terminal, and the volumes of the dust removing devices on the sand bins with different sizes are also required to be the same. The volume of the second dust collector 107 in the production apparatus 10 is determined by the maximum purge gas amount of pneumatic transmission, so that the space required for production can be reduced.

The pneumatic conveying apparatus 100 may be a dilute phase conveying system or a dense phase conveying system. In one example, pneumatic conveying apparatus 100 is a dense phase conveyor.

Dense phase transport is also known as a plug flow pneumatic conveying and (5) conveying in a suppository shape. The dense phase conveying has the advantages of low conveying speed, high material-gas ratio, small consumption power, small abrasion to the pipe wall, adaptability to viscous materials and the like, and can also convey pasty materials.

In the dense-phase conveying process, materials are piled up into material plugs in a conveying pipeline, air is filled between the material plugs, the materials are not scattered in the conveying pipeline any more, a section of materials and a section of air form are formed, the materials move forwards by means of static pressure difference at two ends of the material plugs, the air flow speed is below 8m/s, the conveying pressure is generally between 0.2 and 0.4MPa, and the solid-gas ratio is between 20 and 25. The color sand materials are pushed in a pulse mode through a plug flow pneumatic conveying mode, and the ratio of the sending interval time to the sending time of the bin pump is 2:1.

Alternatively, the number of the gas-solid separation bins 105 is, for example, but not limited to, 2 to 100, specifically, for example, 2, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100. In fig. 1, 5 gas-solid separation bins 105 are shown.

In addition, the connection mode of the gas-solid separation bin 105 and the material conveying pipeline 104 can be set to be detachably connected, so that the number of the gas-solid separation bins 105 can be set according to the production scale.

Alternatively, the number of mixing devices 200 is, for example but not limited to, 2 to 100, specifically, for example, 2, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 are used. In fig. 15 mixing devices 200 are shown.

In addition, the connection mode of the mixing device 200 and the material conveying pipeline 104 can be set to be detachable, so that the number of the mixing devices 200 can be set according to the production scale.

Wherein, the feeding bin 101 can be a multifunctional feeding bin 101, which can meet the requirements of small-package feeding and ton-package feeding.

As shown in fig. 3, in one example, the first sending tank 103 is disposed below the feeding bin 101. The lower end of the feeding bin 101 is provided in a funnel shape so that the powder is controllably input into the first delivery tank 103.

As shown in fig. 2, in one example, a first pneumatic reversing valve 108 is provided between a feed inlet 1051 of the gas-solid separation cartridge 105 and the material conveying conduit 104. The first pneumatic reversing valve 108 is used for pipeline switching, so that materials in the material conveying pipeline 104 are better conveyed into the gas-solid separation bin 105. Further, the feed inlet 1051 of the gas-solid separation bin 105 communicates with the material conveying pipe 104 through a feed pipe 109. A first air reversing valve 108 is provided at the junction of the material transfer conduit 104 and the feed conduit 109.

In one example, the return air inlet 1053 of the gas-solid separation cartridge 105 communicates with the dust collection conduit 106 via a return air conduit 110. Further, an on-off valve 111 is provided on the return air pipe 110.

In one of the examples of this method, the feed port 1051 and the return port 1053 of the gas-solid separation chamber 105 are located above the discharge port 1052.

In one example, a rotary valve 116 is provided at the discharge port 1052 of the gas-solid separation cartridge 105. The rotary valve 116 can effectively prevent the reverse flow of the air flow, so that the air pressure stability and the normal discharge of materials in the system are ensured.

In one example, the second dust collector 107 employs a pulse dust collector.

When the pulse dust collector is used as the second dust collector 107, the dust collection process is approximately as follows:

after the dust-containing gas enters the pulse dust collector, under the action of the flow guide component, the larger particle part of the dust is separated and then directly falls into the ash bucket. The rest dust evenly enters the filtering areas of all the chambers along with the airflow, and is filtered by the filter bags, and the filtered clean gas is discharged through the upper box body, the lifting valve and the exhaust pipe in sequence.

When dust is accumulated on the surface of the filter bag to a certain thickness, the dust on the filter bag is removed by the dust removing component. Specifically, the ash removing part closes the lifting valve according to a set program, controls the current unit to be offline, and opens the electromagnetic pulse valve to carry out injection, so that dust on the filter bag is shaken off.

As shown in fig. 4, in one example, the pneumatic conveying apparatus 100 further includes a second sending tank 112, an inlet of the second sending tank 112 is in communication with the second dust collector 107, and an outlet of the second sending tank 112 is in communication with the material conveying pipe 104.

The larger particles collected in the second dust collector 107 are discharged into the second sending tank 112 for temporary storage, and are sent to the material conveying pipeline 104 by the second sending tank 112 for utilization in the time of powder suction of the unpacking station. Thus, the material utilization rate can be improved. Furthermore, this design also makes it possible to reduce the residues inside the whole conveying system (including the pipes and the dust collectors), for example, to within 1kg at the end of a single-batch recipe feeding cycle, while avoiding mixing between different powders.

In one example, a second pneumatic reversing valve 113 is provided between the second send tank 112 and the material transfer conduit 104. The second pneumatic reversing valve 113 is used for pipeline switching, so that the material in the second sending tank 112 is better input into the material conveying pipeline 104. Further, the second transfer pot 112 communicates with the material transfer line 104 via a circulation line 114. A second pneumatic reversing valve 113 is provided at the junction of the material transfer conduit 104 and the circulation conduit 114.

As shown in fig. 4, in one example, the pneumatic conveying apparatus 100 further includes a dust removing fan 115, and the dust removing fan 115 is disposed at the exhaust port of the second dust remover 107. After the dust-containing gas is treated by the second dust collector 107, the obtained clean gas is discharged through the dust removing fan 115.

As shown in fig. 2, in one example, a mixing device 200 includes a mixing chamber 201 and an agitator 202 disposed in the mixing chamber 201.

Taking the production device shown in fig. 1 as an example, the working principle is as follows:

after manual bag opening or ton bag opening, the powder is added into the feeding bin 101. The powder in the feeding bin 101 is input into the first sending tank 103 through negative pressure, and the powder is input into the material conveying pipeline 104 by the air pressure generated by the first sending tank 103. Air and powder are input into a plurality of gas-solid separation bins 105 through a material conveying pipeline 104, wherein large-particle powder is input into a mixing device 200 through a discharge hole 1052 under the action of gravity, dust in the gas-solid separation bins 105 is back blown by pulse compressed air generated by a first dust remover 102, enters a dust collecting pipeline 106 through a gas return hole 1053, and is conveyed into a second dust remover 107 through the dust collecting pipeline 106 for dust removal. The larger particles collected in the second dust collector 107 are discharged into the second sending tank 112, and then sent to the material conveying pipeline 104 for use by the second sending tank 112. After the dust-containing gas is treated by the second dust collector 107, the obtained clean gas is discharged through the dust removing fan 115.

For the transport of 10-200 mesh color sand, the residue in the equipment is within 1kg after the dust removal by the first dust remover 102 and the second dust remover 107, and the dust content in the discharged air is lower than 20mg/m ³ Meets the relevant national standard.

The production device can be provided with only one first dust remover 102 and one second dust remover 107, so that the number of required dust removers is reduced, the equipment investment cost is saved, and the space for arranging the dust removers is reduced.

Further, the utility model also provides a pneumatic conveying device.

The pneumatic conveying apparatus 100 of an embodiment includes a charging bin 101, a first dust remover 102, a first sending tank 103, a material conveying pipe 104, a gas-solid separation bin 105, a dust collecting pipe 106, and a second dust remover 107.

The first dust remover 102 is arranged on the feeding bin 101, and the first dust remover 102 is a pulse dust remover. The feeding bin 101, the first sending tank 103 and the material conveying pipeline 104 are sequentially communicated. The gas-solid separation bin 105 has a feed inlet 1051, a discharge outlet 1052, and a return air inlet 1053 in communication. The number of the gas-solid separation bins 105 is multiple, the feed inlets 1051 of the gas-solid separation bins 105 are respectively communicated with the material conveying pipeline 104, the return air inlets 1053 of the gas-solid separation bins 105 are respectively communicated with the dust collecting pipeline 106, and the dust collecting pipeline 106 is communicated with the second dust remover 107.

More specific features of pneumatic conveying apparatus 100 are described above and will not be described in detail herein.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The pneumatic conveying device is characterized by comprising a feeding bin, a first dust remover, a first sending tank, a material conveying pipeline, a gas-solid separation bin, a dust collecting pipeline and a second dust remover;

2. A pneumatic conveying apparatus as claimed in claim 1, wherein the inlet and return air inlet are located above the outlet.

3. A pneumatic conveying apparatus as claimed in claim 1, wherein a first pneumatic reversing valve is provided between the feed inlet and the material conveying conduit.

4. A pneumatic conveying apparatus as claimed in claim 1, wherein a rotary valve is provided at the discharge port.

5. A pneumatic conveying apparatus as claimed in claim 1, wherein the return air ports of the plurality of gas-solid separation bins are communicated with the dust collecting pipeline through a return air pipeline, and an on-off valve is arranged on the return air pipeline.

6. A pneumatic conveying apparatus according to claim 1 to 5, the device is characterized in that the second dust remover is a pulse dust remover.

7. A pneumatic conveying apparatus as claimed in claim 6, further comprising a second transfer tank, an inlet of the second transfer tank being in communication with the second dust collector, an outlet of the second transfer tank being in communication with the material conveying conduit.

8. A pneumatic conveying apparatus as claimed in claim 7, wherein a second pneumatic reversing valve is provided between the second delivery tank and the material conveying conduit.

9. A production device, characterized by comprising the pneumatic conveying device and the mixing device according to any one of claims 1-8, wherein a plurality of mixing devices are arranged, and the mixing devices are communicated with the discharge ports of the gas-solid separation bins one by one.

10. The production apparatus according to claim 9, wherein the mixing device comprises a mixing chamber and a stirrer provided in the mixing chamber.