Pipeline anti-blocking device of positive-pressure dense-phase conveying system
By setting up a dredging pipe and a capacitor proximity switch on the material pipe, detecting the speed of the material bolt and boosting it, the problem of pipeline blockage in the positive pressure-tight phase conveying system is solved, and the rapid and smooth transportation of materials is achieved.
Patent Information
- Application Number
- CN202422496931.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-16
AI Technical Summary
In a positive pressure dense phase conveying system, the pipeline is prone to material accumulation and blockage due to inappropriate conveying pressure and excessive pipeline height, and it is difficult to accurately locate the blocked position.
The drainage pipe is installed on the pipeline of the material pipe, and is equipped with a detection hole, a vent hole, a check valve and a capacitor proximity switch. By detecting the speed of the material bolt and boosting it, it prevents blockage.
Effectively prevent and quickly resolve pipeline blockages, ensure rapid and smooth transportation of materials, and improve conveying efficiency.
Smart Images
Figure CN223133490U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of positive pressure dense phase conveying, and particularly relates to a pipeline anti-blocking device for a positive pressure dense phase conveying system. Background Art
[0002] Positive pressure dense phase conveying, also known as a silo pump sending tank system, is a technology that uses gas pressure higher than a certain pressure value (such as 0.1 kg / cm0) to push solid particulate materials to be conveyed in a pipeline. This method is particularly suitable for the conveying of high-density materials such as powders and granules, and can effectively improve the conveying efficiency and reduce material consumption. In the current actual production process, due to reasons such as inappropriate setting of the conveying air pressure and too high pipeline height, the pipeline materials are often piled up and blocked, and since the positive pressure dense phase conveying line is usually relatively long, it is difficult to judge where the pipeline is blocked. Content of the Utility Model
[0003] The utility model provides a pipeline anti-blocking device for a positive pressure dense phase conveying system, which can effectively solve the above problems.
[0004] The utility model is realized as follows:
[0005] A pipeline anti-blocking device for a positive pressure dense phase conveying system includes a material pipe, a dredging pipe, a compressed air pipe and a solenoid valve. The material pipe and the dredging pipe are connected to form a positive pressure dense phase conveying pipeline. The dredging pipe is respectively arranged at the upstream end of the bend of the material pipe pipeline and is distributed at intervals between the straight material pipes; detection holes, air supplement holes, one-way valves and capacitive proximity switches are arranged on the dredging pipe. The detection holes and the air supplement holes penetrate through the dredging pipe. There are two detection holes, and the detection holes are respectively arranged on the upstream and downstream sides of the air supplement hole. The one-way valve is arranged on the air supplement hole. The solenoid valve is connected to the compressed air pipe and the one-way valve through a pipeline. The capacitive proximity switch is arranged in the detection hole; the compressed air pipe is arranged on the side of the positive pressure dense phase conveying pipeline.
[0006] As a further improvement, the material pipe and the dredging pipe are stainless steel pipes, and at least the inner wall of the dredging pipe is provided with a ceramic lining. The detection holes do not penetrate through the ceramic lining, and the air supplement holes penetrate through the ceramic lining.
[0007] As a further improvement, the distance between the two detection holes is not greater than the sum of the plug length and the plug spacing.
[0008] As a further improvement, a pressure regulating valve is arranged between the compressed air pipe and the solenoid valve.
[0009] As a further improvement, flanges are respectively arranged at both ends of the material pipe and the dredging pipe.
[0010] The beneficial effects of the present utility model are as follows: By providing a dredging pipe on the pipeline of the material pipe, and arranging a capacitive proximity switch and an air supplement structure, the device detects the conveying speed of the slug in the dense-phase conveying pipe, and boosts the slug in the pipeline, thereby playing a good role in preventing and more quickly solving the problem of pipeline blockage, preventing pipeline blockage, and ensuring the rapid and smooth conveying of materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0012] Figure 1 FIG. is a schematic structural diagram provided by an embodiment of a pipeline anti-blocking device for a positive pressure dense-phase conveying system of the present utility model;
[0013] Figure 2 is Figure 1 an enlarged schematic view of part A in
[0014] Figure 3 FIG. is a schematic structural diagram of a dredging pipe provided by an embodiment of a pipeline anti-blocking device for a positive pressure dense-phase conveying system of the present utility model;
[0015] Figure 4 FIG. is another schematic structural diagram of a dredging pipe provided by an embodiment of a pipeline anti-blocking device for a positive pressure dense-phase conveying system of the present utility model;
[0016] Figure 5 FIG. is a partial schematic structural diagram of a dredging pipe provided by an embodiment of a pipeline anti-blocking device for a positive pressure dense-phase conveying system of the present utility model;
[0017] Figure 6 FIG. is a cross-sectional view of a dredging pipe provided by an embodiment of a pipeline anti-blocking device for a positive pressure dense-phase conveying system of the present utility model;
[0018] Figure 7 FIG. is a schematic structural diagram of a positive pressure dense-phase conveying pipeline provided by an embodiment of a pipeline anti-blocking device for a positive pressure dense-phase conveying system of the present utility model.
[0019] Reference Signs:
[0020] Material pipe 1; Dredging pipe 2; Detection hole 21; Air supplement hole 22; Check valve 23; Capacitive proximity switch 24; Ceramic lining 25; Compressed air pipe 3; Pressure regulating valve 31; Solenoid valve 4; Positive pressure dense-phase conveying pipeline 5; Flange 6. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model.
[0022] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.
[0023] In the description of the present utility model, the terms "upper", "middle", "side", "lateral side", "upper side", "end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model.
[0024] Referring to Figures 1 to 7 As shown, a pipeline anti-blocking device for a positive pressure dense phase conveying system includes a material pipe 1, a dredging pipe 2, a compressed air pipe 3 and a solenoid valve 4. The material pipe 1 and the dredging pipe 2 are connected to form a positive pressure dense phase conveying pipeline 5. The dredging pipe 2 is respectively arranged at the upstream end of the bend of the pipeline of the material pipe 1 and is distributed at intervals between the straight material pipes 1. The dredging pipe 2 is provided with a detection hole 21, a gas replenishing hole 22, a check valve 23 and a capacitive proximity switch 24. The detection hole 21 and the gas replenishing hole 22 penetrate through the dredging pipe 2. There are two detection holes 21, and the detection holes 21 are respectively arranged on the upstream and downstream sides of the gas replenishing hole 22. The check valve 23 is arranged on the gas replenishing hole 22. The solenoid valve 4 is connected to the compressed air pipe 3 and the check valve 23 through a pipeline. The capacitive proximity switch 24 is arranged in the detection hole 21. The compressed air pipe 3 is arranged on the side of the positive pressure dense phase conveying pipeline 5.
[0025] At the upstream end of the bend of the pipeline of the material pipe 1 and distributed at intervals between the straight material pipes 1, such as the horizontal elbow and upward elbow of the material pipe 1, to realize the connection between the feeding equipment and the discharging equipment, and the material is usually conveyed from a lower place to a higher place. Since blockage is likely to occur at the elbow, and blockage is also likely to occur in too long straight pipes, a dredging pipe 2 is arranged at the upstream end of the elbow, and dredging pipes 2 are arranged at intervals on the long straight pipes, so as to detect the conveying speed of the material plug in time and supplement air pressure in time to achieve boosting, and avoid the problem of blockage.
[0026] The compressed air pipe 3 is connected to the air compressor, and the capacitive proximity switch 24 and the solenoid valve 4 are connected to the controller of the system. Preferably, the capacitive proximity switch 24 is arranged close to the bend.
[0027] Further, the material pipe 1 and the dredging pipe 2 are stainless steel pipes, at least the inner wall of the dredging pipe 2 is provided with a ceramic lining 25, the detection hole 21 does not penetrate the ceramic lining 25, and the air supplement hole 22 penetrates the ceramic lining 25.
[0028] By arranging the ceramic lining 25 in the stainless steel pipe, excessive holes are avoided from interfering with the conveying of the material plug and blockage caused by insufficient speed. Arranging the ceramic lining 25 on the material pipe 1 and the dredging pipe 2 can also improve the conveying effect and durability of the material plug.
[0029] Further, the distance between the two detection holes 21 is not greater than the sum of the length of the material plug and the distance between the material plugs.
[0030] Ensure that the speed and position of the material plug can be detected.
[0031] Further, a pressure regulating valve 31 is arranged between the compressed air pipe 3 and the solenoid valve 4.
[0032] It is used to adjust the value of the supplementary air pressure to achieve a better boosting effect.
[0033] Further, flanges 6 are respectively arranged at both ends of the material pipe 1 and the dredging pipe 2.
[0034] The material pipe 1 and the dredging pipe 2 are quickly connected through the flange 6, which is convenient for disassembling and cleaning according to the judged blockage point in the case of complete blockage of the pipeline, and is also convenient for replacing the material pipe 1 and the dredging pipe 2.
[0035] By opening two holes (without damaging the ceramic layer) at one end of the stainless steel pipe of the material pipe 1 (stainless steel pipe lined with ceramic) and arranging the mounting seat of the capacitive proximity switch 24, the distance between them is not greater than the sum of the plug length and the plug spacing, and installing two capacitive sensors to detect the passing of the plug. When the plug is detected, the capacitive proximity switch 24 will output an electrical signal, record the time when the electrical signal is output, and the time for the plug to pass through the distance between the two capacitive proximity switches 24 can be obtained by subtracting the times when the two capacitive proximity switches 24 output electrical signals. Thus, the speed of the plug passing through can be calculated. If the measured speed is lower than the set value, when the capacitive proximity switch 24 at the downstream end detects the passing of the plug and the capacitive proximity switch 24 at the upstream end does not detect the passing of the plug, the solenoid valve 4 between the two capacitive proximity switches 24 is opened for boosting to prevent blockage; when the capacitive proximity switch 24 detects that the plug has not passed through within the set time, it means that the plug is blocked, then the solenoid valve 4 is opened for boosting. When the blockage is serious, the pressure regulating valve 31 increases the pressure to separate the plug and boost to dredge the pipe 2. Figure 7 The installation diagram of the device on the pipeline is shown. When transporting upward in the horizontal section and encountering a bend in the straight section, it is easy to cause blockage due to insufficient speed, such as Figure 7 at positions a, b, and c in the figure. Installing it before the bend can better deal with the problem of pipeline blockage. In the straight section, this device is installed at intervals to keep the conveying speed within a certain range. If unexpected material blockage occurs, the position of the blockage can also be judged by the constantly lit capacitive proximity switch 24 and the number of capacitance changes, and the controller automatically identifies or manually operates to pressurize and dredge.
[0036] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A pipeline anti-blocking device for a positive pressure dense-phase conveying system, characterized in that, It includes a material pipe, a dredging pipe, a compressed air pipe and a solenoid valve. The material pipe and the dredging pipe are connected to form a positive-pressure dense-phase conveying pipeline. The dredging pipes are respectively arranged at the upstream end of the bend of the material pipe pipeline and are spaced and distributed among the straight material pipes; the dredging pipe is provided with a detection hole, a gas replenishing hole, a check valve and a capacitive proximity switch. The detection hole and the gas replenishing hole penetrate through the dredging pipe. There are two detection holes, and the detection holes are respectively arranged on the upstream and downstream sides of the gas replenishing hole. The check valve is arranged on the gas replenishing hole. The solenoid valve is connected to the compressed air pipe and the check valve through a pipeline. The capacitive proximity switch is arranged in the detection hole; the compressed air pipe is arranged on the side of the positive-pressure dense-phase conveying pipeline.
2. The pipe anti-blocking device of a positive pressure dense phase conveying system according to claim 1, characterized in that, The material pipe and the dredging pipe are stainless steel pipes, and at least the inner wall of the dredging pipe is provided with a ceramic lining. The detection hole does not penetrate through the ceramic lining, and the gas replenishing hole penetrates through the ceramic lining.
3. The pipeline anti-blocking device of a positive pressure dense phase conveying system according to claim 1, characterized in that, The distance between the two detection holes is not greater than the sum of the slug length and the slug spacing.
4. The pipeline anti-blocking device of a positive pressure dense phase conveying system according to claim 1, characterized in that, A pressure regulating valve is arranged between the compressed air pipe and the solenoid valve.
5. The pipeline anti-blocking device of a positive pressure dense phase conveying system according to claim 1, characterized in that, Flanges are respectively arranged at both ends of the material pipe and the dredging pipe.