A material mixing and conveying device

Abstract

The present invention discloses a material blending and conveying device, relating to the field of pneumatic conveying technology. The device comprises a main blower and a main air duct connected to the main blower. The main air duct is provided with a first air duct connected thereto. The first air duct is connected to a blending air duct and a conveying air duct, respectively. The blending air duct is connected to a blending silo, and the conveying air duct is connected to a packaging silo. This device can reduce blower usage, thereby reducing noise coverage and lowering production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic conveying, and in particular to a material mixing and conveying device. Background Art

[0002] During the material production and transportation process, the pelletizing system is designed with three fans. One fan is used to blend the materials in the silo, ensuring stable performance indicators and uniform quality for each batch of products. Another fan is used to pneumatically convey the products from the silo to the packaging silo in the packaging workshop. The materials fall by their own weight to the packaging line for packaging. The third fan is used as a backup fan, which can also be used to blend the materials and pneumatically convey the products from the silo to the packaging silo in the packaging workshop.

[0003] This conveying method requires at least two fans to operate simultaneously during material transport. These fans generate high noise levels and cover a wide area, posing significant occupational hazards to operators during inspections and operations. Long-term exposure to such an environment can be detrimental to human health. Furthermore, mixing and pneumatic conveying require high air volumes and high motor power. Simultaneous operation of multiple fans increases production costs, hindering energy conservation and consumption reduction. Summary of the Invention

[0004] The object of the present invention is to provide a material mixing and conveying device that can reduce the use of fans, thereby reducing the coverage of noise and reducing production costs.

[0005] The embodiment of the present invention is achieved as follows:

[0006] An embodiment of the present invention provides a material mixing and conveying device, including a main fan and a main air duct connected to the main fan, wherein a first air duct connected to the main air duct is provided on the main air duct, and the first air duct is respectively connected to the mixing air duct and the conveying air duct, the mixing air duct is used to be connected to the mixing silo, and the conveying air duct is used to be connected to the packaging silo.

[0007] Optionally, the material mixing and conveying device also includes a mixing fan and a conveying fan; the mixing fan is connected to the mixing air duct for conveying wind to the mixing air duct; the conveying fan is connected to the conveying air duct for conveying wind to the conveying air duct.

[0008] Optionally, the material mixing and conveying device also includes a backup fan and a second air duct, the second air duct is respectively connected to the mixing air duct and the conveying air duct, the second air duct is respectively provided with a first valve and a second valve, the backup fan is connected to the second air duct, and the connection between the backup fan and the second air duct is located between the first valve and the second valve.

[0009] Optionally, the first air duct includes a main channel, and a first channel and a second channel respectively connected to the main channel, the first channel and the second channel are respectively connected to the second air duct, and the connection between the first channel and the second channel and the second air duct is located outside the first valve and the second valve.

[0010] Optionally, a first control valve is provided on the first channel, and a second control valve is provided on the second channel.

[0011] Optionally, a main control valve and a pressure relief air duct are further provided on the main air duct, a pressure control valve group is provided on the pressure relief air duct, and a pressure sensor is further provided on the main air duct, and the pressure sensor is electrically connected to the pressure control valve group.

[0012] Optionally, the pressure control valve group includes an electric pressure relief valve and a manual stop valve arranged in parallel, and the pressure sensor is electrically connected to the electric pressure relief valve.

[0013] Optionally, coolers are respectively provided on the mixing air duct and the conveying air duct.

[0014] Optionally, filters are respectively provided on the mixing air duct and the conveying air duct.

[0015] Optionally, control valves are respectively provided at the outlets of the mixing fan and the conveying fan.

[0016] The beneficial effects of the embodiments of the present invention include:

[0017] The material mixing and conveying device provided in the embodiment of the present invention is a device that transmits the air volume required for production by the main fan through the main air duct and the main air duct connected to the main fan. The excess air volume is connected to the mixing air duct and the conveying air duct respectively through the first air duct connected to the main air duct. When it is necessary to mix and convey materials, the required material mixing and conveying can be completed directly by using the excess air volume of the main fan. The above form does not require the use of an additional fan to complete the mixing and conveying of materials. The excess air volume of the main fan is used to blow the material in the mixing air duct to the mixing silo to complete the mixing work, so that the performance index of each batch of products is stable and the quality is uniform. The excess air volume of the main machine is used to blow the material in the conveying air duct to the packaging silo to complete the packaging and conveying work. In this way, the number of fan starts during the production process can be reduced, thereby reducing the coverage of the noise and reducing the power consumption in production, which is conducive to reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is one of the structural schematic diagrams of the material mixing and conveying device provided in an embodiment of the present invention;

[0020] Figure 2 This is a second structural diagram of the material mixing and conveying device provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the connection between the main air duct and the first air duct according to an embodiment of the present invention;

[0022] Figure 4 This is the third structural schematic diagram of the material mixing and conveying device provided in an embodiment of the present invention.

[0023] Icons: 100-Material mixing and conveying device; 105-Backup fan; 110-Main fan; 112-Main air duct; 1122-Main control valve; 1124-Pressure relief air duct; 1126-Pressure control valve group; 1126a-Electric pressure relief valve; 1126b-Manual stop valve; 1128-Pressure sensor; 120-First air duct; 122-Main channel; 124-First channel; 1242-First control valve; 126-Second channel; 1262-Second control valve; 130-Mixing air duct; 132-Cooler; 140-Conveying air duct; 142-Filter; 150-Mixing silo; 160-Packaging silo; 170-Mixing fan; 175-Control valve; 180-Conveying fan; 190-Second air duct; 192-First valve; 194-Second valve. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, or electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] The material blending and conveying device 100 provided in the embodiment of the present application is mainly used for blending and conveying work in the olefin production process. Of course, it can also be used for blending and conveying work in the production of other materials. The embodiment of the present application does not impose specific restrictions on this.

[0029] As a fundamental organic chemical raw material, olefins play a crucial role in the modern petroleum and chemical industries. my country, with its scarce oil resources and abundant coal resources, has long achieved industrialized production of coal-to-methanol. Developing technologies to produce low-carbon olefins from coal can optimize the industrial structure, alleviate the pressure of oil resource constraints, and offer significant economic benefits, promising broad development prospects. The most representative of these technologies is methanol-to-olefins (MTO).

[0030] The main blower is a crucial rotating device in an MTO unit. Its primary function is to provide air to the regeneration system, ensuring fluidization and charring of the catalyst. Its operation is crucial to the proper functioning of the entire unit. The design of auxiliary equipment, instrumentation, and piping associated with the main blower, particularly the main blower inlet and outlet piping, is crucial for ensuring the long-term proper operation of the entire unit. In the embodiments of the present application, while the main blower is performing primary production operations, excess air volume from the main blower is utilized to achieve material blending and transport.

[0031] Please refer to Figure 1An embodiment of the present application provides a material mixing and conveying device 100, including a main fan 110, and a main air duct 112 connected to the main fan 110, and a first air duct 120 connected to the main air duct 112 is provided on the main air duct 112, and the first air duct 120 is connected to the mixing air duct 130 and the conveying air duct 140 respectively, the mixing air duct 130 is used to be connected to the mixing silo 150, and the conveying air duct 140 is used to be connected to the packaging silo 160.

[0032] Specifically, the main air duct 112, which is connected to the main air fan 110, is primarily used to provide an air source for the regeneration system. While achieving this purpose, the wind force generated by the main air fan 110 is fully utilized by the first air duct 120, which is provided on the main air duct 112 and connected to the main air duct 112. The excess wind force of the main air fan 110 is used to blend and convey materials, thereby improving the utilization rate of the main air fan 110. This avoids the need for a dedicated air fan to blend and convey materials, thereby reducing production costs and achieving energy conservation and consumption reduction.

[0033] Furthermore, since fan units are generally large, the noise generated during operation is high. If additional fans are used for both mixing and conveying, the increased distribution of noise sources increases the noise coverage. Furthermore, the noise generated between different fan units may cause resonance, exacerbating the noise impact. This poses a significant occupational hazard to operators during inspections and operations, and prolonged exposure to this environment can damage human health. By adopting the above approach, by reducing the number of fans used, energy conservation and consumption can be achieved while also reducing noise hazards and improving the comfort of the working environment.

[0034] At the same time, fan startup has high environmental requirements. During winter operation, the low ambient temperature affects the fan lubricating oil temperature, resulting in the fan not meeting the startup conditions. To ensure the normal startup of the fan, steam heating of the lubricating oil is often used to increase the lubricating oil temperature so that the fan meets the startup conditions. This operation increases steam consumption and labor costs, and the steam purge process can easily cause safety hazards such as burns to operators. When the main fan 110 is used for mixing and conveying materials, there is no need to start other fans, which effectively reduces the workload and improves the efficiency of the operation to ensure normal and stable production.

[0035] The material blending and conveying device 100 provided in the embodiment of the present invention is a device that transmits the air volume required for production by the main fan 110 through the main air duct 112 via the main fan 110 and the main air duct 112 connected to the main fan 110. The excess air volume is connected to the blending duct 130 and the conveying duct 140 respectively via the first air duct 120 connected to the main air duct 112. When it is necessary to blend and convey materials, the required material blending and conveying can be completed directly by using the excess air volume of the main fan 110. The above form does not require the use of an additional fan to complete the blending and conveying of materials. The excess air volume of the main fan 110 is used to blow the material in the blending duct 130 to the blending silo 150 to complete the blending work, so that the performance index of each batch of products is stable and the quality is uniform. The excess air volume of the main machine is used to blow the material in the conveying duct 140 to the packaging silo 160 to complete the packaging and conveying work. In this way, the number of fan starts during the production process can be reduced, thereby reducing the coverage of noise and reducing power consumption in production, which is conducive to reducing production costs.

[0036] like Figure 2 As shown, the material mixing and conveying device 100 also includes a mixing fan 170 and a conveying fan 180; the mixing fan 170 is connected to the mixing air duct 130 for conveying wind to the mixing air duct 130; the conveying fan 180 is connected to the conveying air duct 140 for conveying wind to the conveying air duct 140.

[0037] Specifically, the mixing fan 170 and the conveying fan 180 are in a stopped state during normal operation. By connecting the mixing fan 170 to the mixing duct 130 and the conveying fan 180 to the conveying duct 140, when the first duct 120 is undergoing maintenance or repair, the mixing fan 170 and the conveying fan 180 can be used to complete the required material mixing and conveying tasks, thereby ensuring the continuity of production operations and preventing production from being affected by the normal operation of the first duct 120. This configuration is conducive to ensuring production progress and preventing the first duct 120 from affecting the normal production process.

[0038] like Figure 2 As shown, the material mixing and conveying device 100 also includes a backup fan 105 and a second air duct 190. The second air duct 190 is respectively connected to the mixing air duct 130 and the conveying air duct 140. The second air duct 190 is respectively provided with a first valve 192 and a second valve 194. The backup fan 105 is connected to the second air duct 190, and the connection between the backup fan 105 and the second air duct 190 is located between the first valve 192 and the second valve 194.

[0039] Specifically, the first valve 192 and the second valve 194 are closed during normal operation. The backup fan 105 is activated only when the mixing fan 170 and the conveying fan 180 are activated, and either the mixing fan 170 or the conveying fan 180 fails. For example, if the mixing fan 170 and the conveying fan 180 are activated and the mixing fan 170 fails, the first valve 192 is opened and the backup motor is started, allowing the air generated by the backup motor to be delivered to the mixing duct 130. If the conveying fan 180 fails, the second valve 194 is opened and the backup motor is started, allowing the air generated by the backup motor to be delivered to the conveying duct 140.

[0040] like Figure 1 and Figure 2 As shown, the first air duct 120 includes a main channel 122, and a first channel 124 and a second channel 126 respectively connected to the main channel 122. The first channel 124 and the second channel 126 are respectively connected to the second air duct 190, and the connection between the first channel 124 and the second channel 126 and the second air duct 190 is located outside the first valve 192 and the second valve 194.

[0041] Specifically, since the second air duct 190 is connected to the mixing air duct 130 and the conveying air duct 140, respectively, and the first valve 192 and the second valve 194 are respectively provided on the second air duct 190, when the first air duct 120 is connected to the second air duct 190 through the first channel 124 and the second channel 126, in order to prevent the closed first valve 192 and the second valve 194 from affecting the communication between the first channel 124 and the mixing air duct 130, and the communication between the second channel 126 and the conveying air duct 140, the connection between the first channel 124 and the second channel 126 and the second air duct 190 is located outside the first valve 192 and the second valve 194. In this way, when both the low-pressure valve and the second valve 194 are closed, the required air supply path can be formed from the main fan 110, which helps to ensure normal material mixing and conveying.

[0042] like Figure 2 As shown, a first control valve 1242 is provided on the first channel 124 , and a second control valve 1262 is provided on the second channel 126 .

[0043] Specifically, using the above structure, under normal working conditions, the first control valve 1242 and the second control valve 1262 are in the open state. When the first channel 124 is temporarily out of service for maintenance or repair, the mixing fan 170 and the conveying fan 180 are required to carry out the required production work. At this time, in order to avoid the first channel 124 and the second channel 126 affecting the transmission of wind power, the first control valve 1242 and the second control valve 1262 can be closed, so that the air volume generated by the mixing fan 170 flows into the mixing air duct 130, and the air volume generated by the conveying fan 180 flows into the conveying air duct 140, thereby improving energy utilization.

[0044] like Figure 3 As shown, the main air duct 112 is also provided with a main control valve 1122 and a pressure relief air duct 1124, the pressure relief air duct 1124 is provided with a pressure control valve group 1126, and the main air duct 112 is also provided with a pressure sensor 1128, which is electrically connected to the pressure control valve group 1126.

[0045] Specifically, in operation, the main control valve 1122 provided on the main air duct 112 is opened to a certain degree to stabilize the air volume passing through the main air duct 112 and ensure normal production. A pressure sensor 1128 is also provided on the main air duct 112. When the pressure sensor 1128 detects that the pressure in the main air duct 112 is excessive, the pressure control valve assembly 1126 is activated to relieve the pressure in the main air duct 112 through the pressure relief duct 1124.

[0046] like Figure 3 As shown, the pressure control valve group 1126 includes an electric pressure relief valve 1126a and a manual stop valve 1126b arranged in parallel, and the pressure sensor 1128 is electrically connected to the electric pressure relief valve 1126a.

[0047] Specifically, manual shutoff valve 1126b and electric pressure relief valve 1126a are both closed during normal operation. When pressure sensor 1128 detects that the pressure in main air duct 112 has reached a threshold, electric pressure relief valve 1126a automatically opens to release pressure, maintaining the pressure in main channel 122 within a stable range. Once the pressure in main channel 122 is within the stable range, electric pressure relief valve 1126a automatically closes. If electric pressure relief valve 1126a fails, manual shutoff valve 1126b can be manually opened or closed to maintain pressure stability in main channel 122.

[0048] like Figure 4As shown, coolers 132 are respectively provided on the mixing air duct 130 and the conveying air duct 140. Thus, the air delivered by the main blower 110 to the mixing air duct 130 and the conveying air duct 140 can be cooled by the coolers 132, thereby preventing the granular product from melting during the conveying or mixing process, thereby preventing the morphology of the product particles from being affected or the melted particles from sticking to the inner wall of the pipeline and clogging the pipeline, thereby ensuring that the quality of the product is not affected during the mixing and conveying process.

[0049] like Figure 4 As shown, filters 142 are respectively provided on the mixing air duct 130 and the conveying air duct 140. In this way, impurities in the air can be purified, and product contamination during the mixing and conveying process can be prevented, which is beneficial to ensuring the quality of the material.

[0050] like Figure 4 As shown, a control valve 175 is provided at the outlet of the mixing fan 170 and the conveying fan 180 respectively.

[0051] Specifically, under normal operating conditions, mixing fan 170 and conveying fan 180 are deactivated. Control valve 175 is normally closed. Only when first air duct 120 is out of service are mixing fan 170 and conveying fan 180 activated, at which point control valve 175 needs to be opened. This protects mixing fan 170 and conveying fan 180, ensuring the cleanliness of their pipelines when not in use, preventing debris from entering the pipelines. This ensures they can be used directly in an emergency, thereby maintaining product production efficiency.

[0052] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A material mixing and conveying device, characterized in that: It includes a main fan and a main air duct connected to the main fan, wherein the main air duct is provided with a first air duct connected to the main air duct, the first air duct is connected to a mixing air duct and a conveying air duct respectively, the mixing air duct is used to be connected to a mixing silo, and the conveying air duct is used to be connected to a packaging silo; The material mixing and conveying device further comprises a mixing fan and a conveying fan; the mixing fan is connected to the mixing air duct and is used to convey wind to the mixing air duct; the conveying fan is connected to the conveying air duct and is used to convey wind to the conveying air duct; The material mixing and conveying device also includes a backup fan and a second air duct, the second air duct is respectively connected to the mixing air duct and the conveying air duct, the second air duct is respectively provided with a first valve and a second valve, the backup fan is connected to the second air duct, and the connection between the backup fan and the second air duct is located between the first valve and the second valve.

2. The material mixing and conveying device according to claim 1, characterized in that: The first air duct includes a main channel, and a first channel and a second channel respectively connected to the main channel. The first channel and the second channel are respectively connected to the second air duct, and the connection between the first channel and the second channel and the second air duct is located outside the first valve and the second valve.

3. The material mixing and conveying device according to claim 2, characterized in that: The first channel is provided with a first control valve, and the second channel is provided with a second control valve.

4. The material mixing and conveying device according to any one of claims 1 to 3, characterized in that: The main air duct is further provided with a main control valve and a pressure relief air duct, the pressure relief air duct is provided with a pressure control valve group, and the main air duct is further provided with a pressure sensor, and the pressure sensor is electrically connected to the pressure control valve group.

5. The material mixing and conveying device according to claim 4, characterized in that: The pressure control valve group includes an electric pressure relief valve and a manual stop valve arranged in parallel, and the pressure sensor is electrically connected to the electric pressure relief valve.

6. The material mixing and conveying device according to any one of claims 1 to 3, characterized in that: The mixing air duct and the conveying air duct are respectively provided with coolers.

7. The material mixing and conveying device according to any one of claims 1 to 3, characterized in that: The mixing air duct and the conveying air duct are respectively provided with filters.

8. The material mixing and conveying device according to any one of claims 1 to 3, characterized in that: Control valves are respectively provided at the outlets of the mixing fan and the conveying fan.

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