System for improving pneumatic conveying rate

Abstract

The utility model relates to a system for improving the pneumatic conveying rate. A feeding pipe and a discharging pipe are arranged at the top and the bottom of the sending tank respectively, a feeding valve and a discharging valve are installed on the feeding pipe and the discharging pipe respectively, the fluidization control system is installed on the sending tank, a fluidization control valve is installed on the fluidization control system, and the pneumatic conveying system is connected between the sending tank and an outlet of the V-301 storage tank. The pneumatic conveying system comprises a sending tank air inlet main pipe, a storage tank air outlet main pipe and an auxiliary blowing pipe, the sending tank air inlet main pipe is communicated with the top of the sending tank and provided with a main conveying control valve, the storage tank air outlet main pipe is communicated between the sending tank air inlet main pipe and a V-301 storage tank outlet, and the auxiliary blowing pipe is communicated with the storage tank air outlet main pipe and provided with a control valve set. The control system is electrically connected with the feeding valve, the discharging valve, the fluidization control valve, the main conveying control valve and the control valve set. The conveying efficiency of raw material supply can be improved, the equipment production efficiency is improved, and the production benefits are increased.

Description

Technical Field

[0001] This application relates to the technical field of pneumatic conveying, and particularly to a system for improving the conveying rate of pneumatic conveying. Background Art

[0002] Salt, the ancestor of all flavors and the general of food dishes, is an important food related to people's livelihood. To ensure the supply of salt products for the vast number of consumers and complete various task indicators issued by the company, providing high-quality and safe salt products has always been our unremitting pursuit. As one of the key production products of the company, efficiently completing the production of various small-pack salt products has always been a topic that we unremittingly pursue and tackle.

[0003] However, in the actual production process, the feeding system cannot meet the saturated operation requirements of subsequent equipment, and cannot exert the due production capacity of the equipment, resulting in an increase in production costs and an extension of the production cycle. Material supply is an important process for the supply of product raw materials to ensure the normal progress of production. Once the supply volume is insufficient, it will affect the normal progress of subsequent processes, cause some equipment to stop intermittently, and reduce production efficiency. Moreover, with the extension of the operation time of the pneumatic conveying system, the conveying efficiency is greatly reduced, seriously affecting the production efficiency. Summary of the Utility Model

[0004] To solve or partially solve the problems existing in the related technologies, this application provides a system for improving the conveying rate of pneumatic conveying, which can improve the conveying efficiency of raw material supply, improve the production efficiency of equipment, and increase production benefits.

[0005] This application provides a system for improving the conveying rate of pneumatic conveying, including a sending tank 1, a control system, and a pneumatic conveying system; the top and bottom of the sending tank 1 are respectively provided with a feed pipe and a discharge pipe, and a feed valve 2 and a discharge valve 3 are respectively installed on the feed pipe and the discharge pipe. A fluidization control system is installed on the sending tank 1, and a fluidization control valve 4 is installed on the fluidization control system. The pneumatic conveying system is connected between the sending tank 1 and the outlet of the V-301 storage tank. The pneumatic conveying system includes a main sending tank intake pipe 5, a main storage tank outlet pipe 6, and an auxiliary blowing pipe 7. The main sending tank intake pipe 5 communicates with the top of the sending tank 1, and a main conveying control valve 8 is installed thereon. The main storage tank outlet pipe 6 is connected between the main sending tank intake pipe 5 and the outlet of the V-301 storage tank. The auxiliary blowing pipe 7 communicates with the main storage tank outlet pipe 6, and a control valve group is installed thereon. The control system is electrically connected to the feed valve 2, the discharge valve 3, the fluidization control valve 4, the main conveying control valve 8, and the control valve group respectively.

[0006] Optionally, in some solutions, a high-level sensor 9 and a low-level sensor 10 are respectively installed in the upper part of the inner cavity and the lower part of the inner wall of the sending tank 1, and the high-level sensor 9 and the low-level sensor 10 are respectively electrically connected to the control system.

[0007] Optionally, in some solutions, the control valve group includes a pneumatic control valve 11, a pressure reducing valve 12, and a ball valve 13. The pneumatic control valve 11, the pressure reducing valve 12, and the ball valve 13 are sequentially installed on the auxiliary blowing pipe 7. A first reducing pipe 14 and a filter 15 are arranged between the pressure reducing valve 12 and the ball valve 13. A second reducing pipe 16 is arranged on the auxiliary blowing pipe 7 at the rear end of the ball valve 13.

[0008] Optionally, in some solutions, the valve opening of the ball valve 13 is 55%.

[0009] The technical solution provided by this application may include the following beneficial effects:

[0010] This application can improve the conveying efficiency of raw material supply, improve the production efficiency of equipment, increase production benefits. The minimum conveying efficiency reaches 34.23 tons per hour. The outsourcing cost for handling cleaning and blowing powder salt per year is reduced to 0.54 ten thousand yuan. At least 240 tons of small-bag products are added per month, and the annual increase in sales revenue is at least 27.6 ten thousand yuan.

[0011] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] By describing the exemplary embodiments of the present application in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present application will become more obvious. Among them, in the exemplary embodiments of the present application, the same reference numerals generally represent the same components.

[0013] Figure 1 It is a schematic structural diagram of a system for improving the pneumatic conveying rate shown in the embodiments of the present application.

[0014] Reference Numerals:

[0015] 1 - Sending tank, 2 - Feed valve, 3 - Discharge valve, 4 - Fluidization control valve, 5 - Main intake pipe of the sending tank, 6 - Main outlet pipe of the storage tank, 7 - Auxiliary blowing pipe, 8 - Main conveying control valve, 9 - High level sensor, 10 - Low level sensor, 11 - Pneumatic control valve, 12 - Pressure reducing valve, 13 - Ball valve, 14 - First reducing pipe, 15 - Filter, 16 - Second reducing pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The embodiments of the present application will be described in more detail below with reference to the drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0017] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more, unless otherwise specifically and clearly defined.

[0018] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0019] Unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0020] In view of the above problems, the embodiments of this application provide a system for improving the conveying rate of pneumatic conveying, which can improve the conveying efficiency of raw material supply, improve the production efficiency of equipment, and increase production benefits.

[0021] The technical solutions of the embodiments of this application will be described in detail below with reference to the drawings.

[0022] See Figure 1, the system for improving the conveying rate of pneumatic conveying includes a sending tank 1, a control system, and a pneumatic conveying system; the top and bottom of the sending tank 1 are respectively provided with a feed pipe and a discharge pipe, and a feed valve 2 and a discharge valve 3 are respectively installed on the feed pipe and the discharge pipe. A fluidization control system is installed on the sending tank 1, and a fluidization control valve 4 is installed on the fluidization control system. The pneumatic conveying system is connected between the sending tank 1 and the outlet of the V-301 storage tank. The pneumatic conveying system includes a main sending tank intake pipe 5, a main storage tank outlet pipe 6, and an auxiliary blowing pipe 7. The main sending tank intake pipe 5 communicates with the top of the sending tank 1, and a main conveying control valve 8 is installed thereon. The main storage tank outlet pipe 6 communicates between the main sending tank intake pipe 5 and the outlet of the V-301 storage tank. The auxiliary blowing pipe 7 communicates with the main storage tank outlet pipe 6, and a control valve group is installed thereon. The control system is electrically connected to the feed valve 2, the discharge valve 3, the fluidization control valve 4, the main conveying control valve 8, and the control valve group respectively.

[0023] During operation, through multiple tests and calculations, it is obtained that the main factors affecting the conveying rate of pneumatic conveying are: First, the opening of the fluidization control valve 4 lags behind. Second, the air pressure in the auxiliary blowing pipe 7 is less than the air pressure in the main sending tank intake pipe. Therefore, the system is adjusted. The control system controls the opening of the feed valve 2. After the loading is completed, the feed valve 2 is closed, and the fluidization control valve 4 is opened. When the pressure at the top of the tank reaches 85 kPa, the discharge valve 3, the main conveying control valve 8, and the control valve group are opened. After the conveying is completed, all valves are closed, overcoming the problem of the lag in the opening of the fluidization control valve 4. The pneumatic conveying system is connected between the sending tank 1 and the outlet of the V-301 storage tank, overcoming the problem that the air pressure in the auxiliary blowing pipe 7 is less than the air pressure in the main sending tank intake pipe.

[0024] The optimal pressure parameters are found through experiments: Two people cooperate to manually control the material sending, and the fluidization control valve 4 is manually opened in advance. The control program test of the bin pump material sending is carried out. Taking the shortest time from the start of sending to the low material level alarm as the benchmark, the corresponding pressure at the top of the sending tank is found. The data is shown in Table 1.

[0025] Table 1 Pressure at the top of the tank and the shortest time for low material level alarm

[0026] Serial number Tank top pressure (kpa) Time consumption (s) 1 50 850 2 60 796 3 70 752 4 80 676 5 90 675 6 100 760 7 110 789 8 120 795 9 130 797

[0027] According to the experimental results, when the pressure parameter at the top of the tank is 80 - 90 kPa, the corresponding time consumption is the least. The group takes the intermediate value of 85 kPa as the control parameter.

[0028] In some embodiments, a high material level sensor 9 and a low material level sensor 10 are respectively installed in the upper part of the inner cavity and the lower part of the inner wall of the sending tank 1, and the high material level sensor 9 and the low material level sensor 10 are respectively electrically connected to the control system.

[0029] During operation, the high-level material sensor 9 and the low-level material sensor 10 detect the depth of the material in the sending tank 1 and transmit signals to the control system. The control system controls the conveying and stopping of the material based on this data.

[0030] In some embodiments, the control valve group includes a pneumatic control valve 11, a pressure reducing valve 12, and a ball valve 13. The pneumatic control valve 11, the pressure reducing valve 12, and the ball valve 13 are sequentially installed on the auxiliary blowing pipe 7. A first reducing pipe 14 and a filter 15 are arranged between the pressure reducing valve 12 and the ball valve 13. A second reducing pipe 16 is arranged on the auxiliary blowing pipe 7 behind the ball valve 13. The valve opening of the ball valve 13 is 55%.

[0031] During operation, the opening degrees of the pneumatic control valve 11 and the pressure reducing valve 12 are regulated by the control system to control the air flow pressure in the auxiliary blowing pipe 7. The opening degree of the ball valve 13 is fixed, and the filter 15 filters the air. Ensure that under the condition that the auxiliary blowing pressure is slightly higher than the conveying pipe pressure within 20 kPa, within the range of 320 - 350 kPa of the discharging port pressure of the sending tank, find the appropriate opening degree. The specific experimental data is shown in Table 2.

[0032] Table 2 Relationship between the opening degree of the ball valve and the auxiliary blowing pressure at the tank outlet

[0033]

[0034] It can be seen from the statistics that within the range of 320 - 350 kPa of the discharging port pressure of the sending tank, 55% of the ball valve and 11% of the auxiliary blowing pipe are the optimal opening degrees.

[0035] This application can improve the conveying efficiency of raw material supply, improve the production efficiency of equipment, increase production benefits. The minimum conveying efficiency reaches 34.23 tons per hour. The outsourcing cost for handling cleaning and blowing powder salt per year is reduced to 0.54 ten thousand yuan. At least 240 tons of small bag products are added per month, and at least 27.6 ten thousand yuan of annual sales revenue is increased.

[0036] Finally, it should also be noted that in this article, relationships such as first and second 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 including, containing, or any other variant are intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such process, method, article, or device.

[0037] The unit described as a separation component may or may not be physically separated. The component shown as a unit may or may not be a physical unit, that is, it may be located in one place or may be distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0038] The embodiments of the present application have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A system for improving pneumatic conveying efficiency, characterized in that: The system for improving the pneumatic conveying rate comprises a sending tank (1), a control system, and a pneumatic conveying system; the top and bottom of the sending tank (1) are respectively provided with a feed pipe and a discharge pipe, the feed pipe and the discharge pipe are respectively provided with a feed valve (2) and a discharge valve (3), the sending tank (1) is provided with a fluidization control system, the fluidization control system is provided with a fluidization control valve (4), the pneumatic conveying system is connected between the sending tank (1) and the outlet of the V-301 storage tank, and the pneumatic conveying system comprises an air inlet main control valve of the sending tank The sending tank air inlet pipe (5) is connected to the top of the sending tank (1), and a main delivery control valve (8) is installed on it. The storage tank air outlet pipe (6) is connected between the sending tank air inlet pipe (5) and the outlet of the V-301 storage tank. The blowing-assisting pipe (7) is connected to the storage tank air outlet pipe (6), and a control valve group is installed on it. The control system is electrically connected to the feed valve (2), the discharge valve (3), the fluidization control valve (4), the main delivery control valve (8), and the control valve group.

2. The system for improving pneumatic conveying efficiency according to claim 1, characterized in that: A high material level sensor (9) and a low material level sensor (10) are respectively installed on the upper part of the inner cavity and the lower part of the inner wall of the sending tank (1), and the high material level sensor (9) and the low material level sensor (10) are respectively electrically connected to the control system.

3. The system for improving pneumatic conveying efficiency according to claim 1 or 2, characterized in that: The control valve group comprises an air control valve (11), a pressure reducing valve (12), and a ball valve (13). The air control valve (11), the pressure reducing valve (12), and the ball valve (13) are sequentially mounted on the blow-assisting pipe (7). A first reducer (14) and a filter (15) are arranged between the pressure reducing valve (12) and the ball valve (13). A second reducer (16) is arranged on the blow-assisting pipe (7) at the rear end of the ball valve (13).

4. The system for improving pneumatic conveying efficiency according to claim 3, characterized in that: The valve opening of the ball valve (13) is 55%.

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