A pulse jet experimental system for plastic sintered plates

Abstract

The present invention relates to the technical field of dust removal of plastic-sintered boards, and specifically to a pulse jet experimental system for plastic-sintered boards. It includes a pulse jet assembly, a pressure sensor, and a data acquisition device. The pulse jet assembly has a jet pipe for blowing air to the plastic-sintered board, and the pressure sensor is arranged on the surface of the plastic-sintered board to collect the blowing pressure data on the surface of the plastic-sintered board. The pressure sensor is electrically connected to the data acquisition device. It can realize rapid switching between different jet apertures, greatly reducing the waste of experimental time and contributing to the efficient advancement of the experiment. In addition, the change of the jet aperture has higher continuity, and a more coherent series of experimental data can be obtained. Compared with the traditional method of directly replacing the jet pipes with different apertures, there is no need to prepare a large number of jet pipes with different apertures in advance, which saves more experimental costs and is more convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal of plastic sintered plates, and in particular to a pulse jetting experimental system for plastic sintered plates. Background Art

[0002] With the advancement of industrial technology and the strengthening of human environmental awareness, effective waste gas dust removal technology is urgently needed in large industrial production. The main dust removal technologies currently include: cyclone dust removal technology, high temperature electrostatic dust removal, ceramic filtration dust removal, mobile particle layer filtration dust removal, plastic sintered plate dust removal, etc.

[0003] The plastic sintered plate dust collector is a new generation of ultra-high efficiency dust collector developed and produced in foreign countries in the past two decades. It can effectively capture dust above 0.1 micron, with a capture efficiency of more than 99%, and an emission of <1mg / m3, achieving low emission in the true sense. It has the characteristics of acid and alkali resistance, strong moisture resistance, wear resistance, and small equipment size. It is also the only filtering dust removal equipment that can be used to handle high-concentration dust containing a large amount of water and oil. The plastic sintered plate dust collector has been widely used in production processes such as powder crushing, grading, separation, and packaging.

[0004] In order to continue to optimize the performance of the plastic-sintered plate dust collector, the relationship between the injection parameters and the positive peak value of the filter plate side wall pressure can be explored through pulse injection experiments to obtain the optimal injection parameter combination for the plastic-sintered plate and establish a mathematical model for the optimal injection aperture. However, in the actual experimental process, in order to obtain experimental data under different injection apertures, it is necessary to frequently replace the injection tubes of different apertures, which is labor-intensive and time-consuming, and seriously slows down the progress of the experiment.

[0005] In view of this, this application is hereby filed. Summary of the invention

[0006] The purpose of the present invention is to provide a pulse blowing experimental system for plastic sintered plates, which can realize rapid switching between different blowing apertures, greatly reducing the waste of experimental time and contributing to the efficient advancement of the experiment. In addition, the change of the blowing aperture has higher continuity, and a more coherent series of experimental data can be obtained. Compared with the traditional method of directly replacing the blowing tubes with different apertures, there is no need to prepare a large number of blowing tubes with different apertures in advance, which saves more experimental costs and is more convenient to use.

[0007] The embodiment of the present invention is achieved as follows:

[0008] A pulse spraying experimental system for a plastic sintered plate comprises a pulse spraying component, a pressure sensor and a data acquisition device.

[0009] The pulse blowing assembly has a blowing pipe for blowing air to the plastic sintering plate, and a pressure sensor is arranged on the surface of the plastic sintering plate to collect blowing pressure data on the surface of the plastic sintering plate. The pressure sensor is electrically connected to the data acquisition device.

[0010] The blowing pipe is provided with a blowing hole, which is arranged along the radial direction of the blowing pipe. The hole wall of the blowing hole is provided with a receiving groove, which is formed by the hole wall of the blowing hole being recessed along its radial direction, and the receiving groove is continuously arranged in a ring shape along the circumference of the blowing hole. The receiving groove is arranged near the outlet end of the blowing hole.

[0011] The receiving groove contains an adjusting ring and an adapting tube, the inner diameters of the adjusting ring and the adapting tube are the same as the diameter of the blowing hole, and both are arranged concentrically with the blowing hole. The adjusting ring can be slidably matched with the receiving groove, one end of the adapting tube is sealed with the adjusting ring, and the other end of the adapting tube is sealed with one side of the receiving groove near the outlet end of the blowing hole. The adapting tube is made of elastic material.

[0012] A guide hole is also provided on the groove wall of the accommodating groove. A limit rod is slidably fitted in the guide hole. The limit rod is driven by the first adjusting component.

[0013] A push plate, a push column and a positioning column are also provided in the blowing tube. The positioning column is arranged along the axial direction of the blowing hole and is slidably fitted in the blowing tube. The positioning column is driven by the second adjustment component, and the push plate is fixedly connected to the positioning column. The push column is arranged along the axial direction of the blowing hole, one end of the push column is fixedly connected to the push plate, and the other end passes through the inner wall of the blowing tube and extends into the receiving groove. The push column is fixedly connected to the adjustment ring.

[0014] Furthermore, a plurality of limit rods are evenly spaced along the circumference of the blowing hole, and the limit rods are arranged along the radial direction of the blowing hole. The end of the limit rod is arc-shaped, and the end of the limit rod is constructed so that when the plurality of limit rods move toward the central axis of the blowing hole and reduce the flow surface of the blowing hole to a minimum, the curvature of the end of the limit rod is the same as the curvature corresponding to the minimum flow surface.

[0015] Further, the first adjustment assembly includes a rotating ring, a driving rack and a first driver.

[0016] The rotating ring is arranged around the blowing hole, and an inclined hole is opened on the rotating ring, and the inclined hole extends toward the center of the rotating ring and also extends along the circumference of the rotating ring. A plurality of inclined holes are evenly spaced along the circumference of the rotating ring.

[0017] The limiting rod is fixedly connected with a driving column, which is arranged perpendicular to the limiting rod. The hole wall of the guide hole is also provided with an extension hole for the driving column to extend out. The extension hole penetrates from the hole wall of the guide hole to the outer wall of the blowing tube, and the extension hole extends along the length direction of the guide hole.

[0018] The driving column extends into the inclined hole, and the driving column can be slidably matched in the inclined hole. The rotating ring has an outer gear ring, and the driving rack is meshed with the rotating ring. The driving rack can be slidably matched with the blowing pipe and driven by the first driver.

[0019] Further, the second adjustment assembly includes a second driver and a driving rod, the driving rod has a driving part, and the driving part includes an oblique rod section, a straight rod section and a vertical rod section. The straight rod section is arranged parallel to the main rod body of the driving rod, the oblique rod section is connected between the main rod body and one end of the straight rod section, and the vertical rod section is connected between the main rod body and the other end of the straight rod section. The angle between the oblique rod section and the main rod body is 15° to 60°, and the vertical rod section is perpendicular to the straight rod section. The positioning column is provided with a matching through hole, and the oblique rod section can slide through the matching through hole to adjust the position of the positioning column.

[0020] Furthermore, two groups of guide wheels are arranged in the matching through hole, and the two groups of guide wheels are arranged on opposite sides of the inclined rod section in the axial direction of the positioning column, and the two groups of guide wheels are both in contact with the inclined rod section.

[0021] Furthermore, the outer diameters of the oblique rod section and the straight rod section are the same.

[0022] Furthermore, a plurality of push posts are evenly spaced along the circumference of the adjustment ring.

[0023] Furthermore, the limiting rod is arranged close to an end of the adapting tube away from the adjusting ring.

[0024] Furthermore, along the axial direction of the blowing pipe, a plurality of blowing holes are evenly spaced.

[0025] Furthermore, a mounting hole is provided on the inner wall of the blowing pipe, the mounting hole is coaxially arranged with the blowing hole, the mounting hole is located on a side of the inner wall of the blowing pipe away from the blowing hole, and the positioning column can be slidably fitted in the mounting hole.

[0026] The beneficial effects of the technical solution of the embodiment of the present invention include:

[0027] The plastic sintering plate pulse blowing experimental system provided by the embodiment of the present invention is used in the process of using, and the second adjusting component is used to drive the positioning column to move, so that the pushing column can push the adjusting ring to move. Among them, when the adjusting ring is located on the side of the receiving groove away from the outlet end of the blowing hole, the adapting tube is fully stretched, and the inner diameter of the adapting tube is the same as the inner diameter of the adjusting ring, and the aperture of the blowing hole is in the largest state. When the pushing column pushes the adjusting ring toward the outlet end close to the blowing hole, the adjusting ring compresses the adapting tube. In this state, the minimum inner diameter of the adapting tube is smaller than the inner diameter of the adjusting ring, and the aperture of the blowing hole is smoothly reduced. In the process of adjusting the aperture of the blowing hole by using the adapting tube, the first adjusting component is used to push the limiting rod toward the central axis of the blowing hole, so that the end of the limiting rod is against the minimum inner diameter of the adapting tube, so that the limiting rod can support the adapting tube, so that the adapting tube can stably maintain the corresponding inner diameter, so that the blowing hole can stably spray gas at the corresponding aperture.

[0028] The first adjustment component and the second adjustment component can flexibly change the aperture of the blowing hole, and can effectively prevent the blowing hole from being affected by air pressure during the blowing process, thereby effectively ensuring the accuracy of the experimental results.

[0029] In addition, the limiting rod can also guide the adapting tube to accurately perform elastic deformation, so that the adapting tube can accurately contract or extend.

[0030] In general, the pulse blowing experimental system for plastic sintered plates provided by the embodiment of the present invention can realize rapid switching between different blowing apertures, greatly reducing the waste of experimental time and facilitating the efficient advancement of the experiment. In addition, the change of the blowing aperture has higher continuity, and a more coherent series of experimental data can be obtained. Compared with the traditional method of directly replacing the blowing tubes with different apertures, there is no need to prepare a large number of blowing tubes with different apertures in advance, which saves more experimental costs and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A schematic diagram of the overall structure of a pulse jetting experimental system for plastic sintered plates provided in an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the structure of a blowing pipe of a pulse blowing experimental system for a plastic sintered plate provided in an embodiment of the present invention;

[0034] Figure 3 for Figure 2 A partial enlarged view of

[0035] Figure 4 for Figure 3 A partial enlarged view of

[0036] Figure 5 The figure is a schematic diagram of the setting of the limit rod;

[0037] Figure 6 It is a schematic diagram of the cooperation between the limit rod and the rotating ring;

[0038] Figure 7 The schematic diagram of the structure of the blowing tube after the diameter of the blowing hole is changed;

[0039] Figure 8 for Figure 7 A partial enlarged view of

[0040] Fig. 9 Schematic diagram of the end structure of the limiting rod;

[0041] Fig.10 It is a schematic diagram of the cooperation between the limit rod and the adaptation cylinder.

[0042] Description of reference numerals:

[0043] Plastic sintering board pulse spraying experimental system 1000; pulse spraying assembly 100; air compressor 110; gas storage tank 120; cold dryer 130; pressure reducing valve 140; air bag 150; pulse valve 160; spray pipe 200; spray hole 210; accommodating groove 220; adjusting ring 221; adapting cylinder 222; guide hole 230; extending hole 231; limiting rod 240; driving column 241; pushing plate 250; pushing column 260; positioning column 270; matching through hole 271; guide wheel 272; mounting hole 280; rotating ring 310; inclined hole 311; driving rack 320; driving rod 420; inclined rod section 421; straight rod section 422; vertical rod section 423; pressure sensor 500; charge amplifier 600; data acquisition device 700; computer 800. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 here can be arranged and designed in various different configurations.

[0045] 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 claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0048] In addition, the terms "parallel", "vertical", etc. do not mean that the components must be absolutely parallel or vertical, but can be slightly tilted. For example, "parallel" only means that its direction is more parallel than "vertical", and does not mean that the structure must be completely parallel, but can be slightly tilted.

[0049] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0050] The terms "roughly" and "basically" are intended to explain that the relevant content does not require absolute accuracy, but can have certain deviations. For example, "roughly equal to" does not only mean absolute equality. Since it is difficult to achieve absolute "equality" in actual production and operation, there are generally certain deviations. Therefore, in addition to absolute equality, "roughly equal to" also includes the above-mentioned situation with certain deviations. Taking this as an example, in other cases, unless otherwise specified, the terms "roughly" and "basically" have similar meanings to the above.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Example

[0053] Please refer to Figures 1 to 8 The present embodiment provides a pulse blowing experimental system 1000 for a plastic sintered board. The pulse blowing experimental system 1000 for a plastic sintered board includes: a pulse blowing component 100, a pressure sensor 500 and a data acquisition device 700.

[0054] The pulse spray assembly 100 includes an air compressor 110, an air storage tank 120, a cold dryer 130, a pressure reducing valve 140, an air bag 150, a pulse valve 160 and a spray pipe 200 which are connected in sequence. The spray pipe 200 is used to blow air to the plastic sintering plate, thereby cleaning the plastic sintering plate.

[0055] The pressure sensor 500 is disposed on the surface of the plastic sintering plate to collect the blowing pressure data on the surface of the plastic sintering plate. The pressure sensor 500 is electrically connected to the data acquisition device 700 through the charge amplifier 600, and the data acquisition device 700 is connected to the computer 800 for data analysis.

[0056] The blowing pipe 200 is provided with a blowing hole 210, and the blowing hole 210 is arranged along the radial direction of the blowing pipe 200. The hole wall of the blowing hole 210 is provided with a receiving groove 220, and the receiving groove 220 is formed by the hole wall of the blowing hole 210 being recessed along its radial direction, and the receiving groove 220 is continuously arranged in a ring shape along the circumference of the blowing hole 210. The receiving groove 220 is arranged close to the outlet end of the blowing hole 210.

[0057] The receiving groove 220 contains an adjusting ring 221 and an adapting cylinder 222. The inner diameters of the adjusting ring 221 and the adapting cylinder 222 are the same as the aperture of the blowing hole 210, and both are arranged concentrically with the blowing hole 210. The adjusting ring 221 can be slidably matched with the receiving groove 220, and the adjusting ring 221 can slide in the receiving groove 220 along the axial direction of the blowing hole 210. One end of the adapting cylinder 222 is sealedly connected to the adjusting ring 221, and the other end of the adapting cylinder 222 is sealedly connected to one side of the receiving groove 220 near the outlet end of the blowing hole 210. The adapting cylinder 222 is made of elastic material, including but not limited to rubber.

[0058] A guide hole 230 is further formed in the groove wall of the receiving groove 220 . A limit rod 240 is slidably fitted in the guide hole 230 . The limit rod 240 is driven by the first adjustment assembly.

[0059] A push plate 250, a push column 260 and a positioning column 270 are also provided in the blowing tube 200. The positioning column 270 is arranged along the axial direction of the blowing hole 210 and is slidably fitted in the blowing tube 200. The positioning column 270 can slide along the axial direction of the blowing hole 210 and is driven by the second adjustment component. The push plate 250 is fixedly connected to one end of the positioning column 270 close to the blowing hole 210 and is arranged perpendicular to the positioning column 270. The pushing column 260 is arranged along the axial direction of the blowing hole 210. One end of the pushing column 260 is fixedly connected to the push plate 250, and the other end passes through the inner wall of the blowing tube 200 and extends into the containing groove 220. The pushing column 260 is fixedly connected to the adjustment ring 221.

[0060] In this embodiment, a plurality of limiting rods 240 are evenly spaced apart along the circumference of the blowing hole 210 , and the limiting rods 240 are arranged along the radial direction of the blowing hole 210 .

[0061] During use, the second adjustment component is used to drive the positioning column 270 to move, so that the push column 260 can push the adjustment ring 221 to move. Among them, when the adjustment ring 221 is located on the side of the accommodating groove 220 away from the outlet end of the blowing hole 210, the adapting tube 222 is fully stretched, and the inner diameter of the adapting tube 222 is the same as the inner diameter of the adjustment ring 221, and the aperture of the blowing hole 210 is in the largest state. When the push column 260 pushes the adjustment ring 221 toward the outlet end close to the blowing hole 210, the adjustment ring 221 compresses the adapting tube 222. In this state, the minimum inner diameter of the adapting tube 222 is smaller than the inner diameter of the adjustment ring 221, and the aperture of the blowing hole 210 is smoothly reduced. In the process of using the adaptation cylinder 222 to adjust the aperture of the blowing hole 210, the first adjustment component is used to push the limit rod 240 toward the central axis of the blowing hole 210, so that the end of the limit rod 240 is against the smallest inner diameter of the adaptation cylinder 222. In this way, the limit rod 240 can support the adaptation cylinder 222, so that the adaptation cylinder 222 can stably maintain the corresponding inner diameter, so that the blowing hole 210 can stably spray gas at the corresponding aperture.

[0062] The first adjustment component and the second adjustment component can flexibly change the aperture of the blowing hole 210, and can effectively prevent the blowing hole 210 from being affected by air pressure during the blowing process, thereby effectively ensuring the accuracy of the experimental results.

[0063] In addition, the limiting rod 240 can also guide the adapting tube 222 to accurately perform elastic deformation, so that the adapting tube 222 can accurately contract or extend.

[0064] In general, the pulse blowing experimental system 1000 for plastic sintering plates can realize rapid switching between different blowing holes 210 diameters, greatly reducing the waste of experimental time and contributing to the efficient advancement of the experiment. In addition, the change of the blowing hole 210 diameter has higher continuity, and a more coherent series of experimental data can be obtained. Compared with the traditional method of directly replacing the blowing tubes 200 with different apertures, there is no need to prepare a large number of blowing tubes 200 with different apertures in advance, which saves more experimental costs and is more convenient to use.

[0065] Furthermore, please combine Figures 1 to 10 The end of the limiting rod 240 is arc-shaped, and the end of the limiting rod 240 is constructed as follows: when multiple limiting rods 240 all move toward the central axis of the blowing hole 210 and reduce the flow surface of the blowing hole 210 to the minimum, the curvature of the end of the limiting rod 240 is the same as the curvature corresponding to the minimum flow surface. Such a design can effectively improve the supporting effect of the limiting rod 240 on the adapting tube 222. Among them, when the aperture of the blowing hole 210 is smaller, the shrinking deformation of the adapting tube 222 is greater, the closer the limiting rod 240 is to the central axis of the blowing hole 210, the closer the limiting rod 240 fits to the outer wall of the adapting tube 222, and the more powerful the support for the adapting tube 222 is, which can better meet the requirements of keeping the adapting tube 222 in the corresponding aperture state under high pressure environment. When the aperture of the blowing hole 210 becomes larger, the air pressure in the blowing hole 210 will decrease. At this time, since the curvature of the end of the limiting rod 240 is larger than the curvature of the minimum inner diameter of the adaptation tube 222 at this time, both sides of the end of the limiting rod 240 can support the adaptation tube 222. In other words, one limiting rod 240 can provide two supporting points for the adaptation tube 222, which can strengthen the supporting effect on the adaptation tube 222.

[0066] Furthermore, the first adjustment assembly includes a rotating ring 310 , a driving rack 320 and a first driver.

[0067] The rotating ring 310 is disposed around the blowing hole 210 and has an inclined hole 311 extending toward the center of the rotating ring 310 and also extending along the circumference of the rotating ring 310. A plurality of inclined holes 311 are evenly spaced along the circumference of the rotating ring 310.

[0068] The limiting rod 240 is fixedly connected to a driving column 241, and the driving column 241 is arranged perpendicular to the limiting rod 240. The hole wall of the guide hole 230 is also provided with an extension hole 231 for the driving column 241 to extend out. The extension hole 231 penetrates from the hole wall of the guide hole 230 to the outer wall of the blowing tube 200, and the extension hole 231 extends along the length direction of the guide hole 230.

[0069] The driving column 241 extends into the inclined hole 311, and the driving column 241 can be slidably fitted in the inclined hole 311. The rotating ring 310 has an outer gear ring, and the driving rack 320 is meshed with the rotating ring 310. The driving rack 320 can be slidably fitted in the blowing pipe 200 and driven by the first driver. The first driver drives the driving rack 320 to move, so that the rotating ring 310 rotates, and under the action of the inclined hole 311, the limiting rod 240 can be driven to move along the guide hole 230. The rotating ring 310 can simultaneously drive all the limiting rods 240 at the same blowing hole 210, which is very convenient.

[0070] The second adjustment assembly includes a second driver and a driving rod 420. The driving rod 420 has a driving part, and the driving part includes an oblique rod section 421, a straight rod section 422 and a vertical rod section 423. The straight rod section 422 is arranged parallel to the main rod body of the driving rod 420 and spaced apart. The oblique rod section 421 is connected between the main rod body and one end of the straight rod section 422, and the vertical rod section 423 is connected between the main rod body and the other end of the straight rod section 422. The angle between the oblique rod section 421 and the main rod body is 15° to 60°, and the vertical rod section 423 is perpendicular to the straight rod section 422. The positioning column 270 is provided with a matching through hole 271, and the oblique rod section 421 can slide through the matching through hole 271 to adjust the position of the positioning column 270.

[0071] Among them, two sets of guide wheels 272 are arranged in the matching through hole 271, and the two sets of guide wheels 272 are arranged on opposite sides of the inclined rod section 421 in the axial direction of the positioning column 270, and the two sets of guide wheels 272 are both fitted with the inclined rod section 421. The outer diameters of the inclined rod section 421 and the straight rod section 422 are the same. A plurality of push rods 260 are evenly spaced along the circumference of the adjustment ring 221. The main rod body of the driving rod 420 is arranged perpendicular to the positioning column 270.

[0072] The second driver drives the driving rod 420 to move, and the oblique rod section 421 of the driving rod 420 can push the positioning column 270 to move, thereby adjusting the telescopic degree of the adaptable tube 222 .

[0073] In this embodiment, the limiting rod 240 is arranged near one end of the adaptation tube 222 away from the adjustment ring 221, so that the smallest inner diameter of the adaptation tube 222 can be closer to the outlet end of the blowing hole 210, which can make the image of the aperture change of the blowing hole 210 more direct, thereby improving the reliability of the experimental data.

[0074] Along the axial direction of the blowing pipe 200, a plurality of blowing holes 210 are evenly spaced. The positioning posts 270 of all the blowing holes 210 of the blowing pipe 200 are driven by the same driving rod 420 and the same second driver. The driving rod 420 is evenly spaced along its length direction and has a plurality of oblique rod sections 421, straight rod sections 422 and vertical rod sections 423 for matching with different positioning posts 270. The rotating rings 310 of all the blowing holes 210 of the blowing pipe 200 are also driven by the same driving rack 320 and the same first driver. The driving rack 320 is arranged along the length direction of the blowing pipe 200.

[0075] Furthermore, a mounting hole 280 is provided on the inner wall of the blowing tube 200, and the mounting hole 280 is coaxially arranged with the blowing hole 210. The mounting hole 280 is located on a side of the inner wall of the blowing tube 200 away from the blowing hole 210, and the positioning column 270 can be slidably fitted in the mounting hole 280. With this design, the stability of the positioning column 270 can be effectively improved.

[0076] In summary, the pulse blowing experimental system 1000 for plastic sintered plates provided by the embodiment of the present invention can realize rapid switching between different blowing holes 210 diameters, greatly reducing the waste of experimental time and contributing to the efficient advancement of the experiment. In addition, the change of the diameter of the blowing hole 210 has higher continuity, and a more coherent series of experimental data can be obtained. Compared with the traditional method of directly replacing the blowing tubes 200 with different apertures, there is no need to prepare a large number of blowing tubes 200 with different apertures in advance, which saves more experimental costs and is more convenient to use.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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 pulse jetting experimental system for plastic sintered plates, characterized in that: include: Pulse jet assembly, pressure sensor and data acquisition device; The pulse blowing assembly has a blowing pipe for blowing air to the plastic sintering plate, and the pressure sensor is arranged on the surface of the plastic sintering plate to collect the blowing pressure data on the surface of the plastic sintering plate; the pressure sensor is electrically connected to the data acquisition device; The blowing pipe is provided with a blowing hole, and the blowing hole is arranged along the radial direction of the blowing pipe; the hole wall of the blowing hole is provided with a receiving groove, and the receiving groove is formed by the hole wall of the blowing hole being recessed along its radial direction, and the receiving groove is continuously arranged in an annular shape along the circumference of the blowing hole; the receiving groove is arranged close to the outlet end of the blowing hole; The receiving groove contains an adjusting ring and an adapting tube, the inner diameters of the adjusting ring and the adapting tube are the same as the diameter of the blowing hole, and both are arranged concentrically with the blowing hole; the adjusting ring is slidably matched with the receiving groove, one end of the adapting tube is sealed with the adjusting ring, and the other end of the adapting tube is sealed with a side of the receiving groove close to the outlet end of the blowing hole; the adapting tube is made of elastic material; The groove wall of the receiving groove is also provided with a guide hole, and a limit rod is slidably fitted in the guide hole, and the limit rod is driven by the first adjustment component; A push plate, a push column and a positioning column are also provided in the blowing tube; the positioning column is arranged along the axial direction of the blowing hole and can be slidably matched in the blowing tube, the positioning column is driven by the second adjustment component, and the push plate is fixedly connected to the positioning column; the pushing column is arranged along the axial direction of the blowing hole, one end of the pushing column is fixedly connected to the pushing plate, and the other end passes through the inner wall of the blowing tube and extends into the containing groove, and the pushing column is fixedly connected to the adjusting ring; A plurality of the limiting rods are evenly spaced along the circumference of the blowing hole, and the limiting rods are arranged along the radial direction of the blowing hole; the end of the limiting rod is arc-shaped, and the end of the limiting rod is constructed such that when the plurality of limiting rods move toward the central axis of the blowing hole and reduce the flow surface of the blowing hole to the minimum, the curvature of the end of the limiting rod is the same as the curvature corresponding to the minimum flow surface; The first adjustment assembly includes a rotating ring, a driving rack and a first driver; The rotating ring is arranged around the blowing hole, and an inclined hole is opened on the rotating ring. The inclined hole extends toward the center of the rotating ring and also extends along the circumference of the rotating ring; a plurality of the inclined holes are evenly spaced along the circumference of the rotating ring; The limiting rod is fixedly connected to a driving column, and the driving column is arranged perpendicular to the limiting rod. The hole wall of the guide hole is also provided with an extension hole for the driving column to extend out, and the extension hole penetrates from the hole wall of the guide hole to the outer wall of the blowing pipe, and the extension hole extends along the length direction of the guide hole; The driving column extends into the inclined hole, and the driving column can be slidably fitted in the inclined hole; the rotating ring has an outer gear ring, the driving rack is meshed with the rotating ring, and the driving rack can be slidably fitted in the blowing pipe and driven by the first driver; The second adjustment component includes a second driver and a driving rod, the driving rod has a driving part, and the driving part includes an oblique rod section, a straight rod section and a vertical rod section; the straight rod section is arranged in parallel and spaced apart from the main rod body of the driving rod, the oblique rod section is connected between the main rod body and one end of the straight rod section, and the vertical rod section is connected between the main rod body and the other end of the straight rod section; wherein the angle between the oblique rod section and the main rod body is 15°~60°, and the vertical rod section is perpendicular to the straight rod section; the positioning column is provided with a matching through hole, and the oblique rod section can be slidably passed through the matching through hole to adjust the position of the positioning column.

2. The pulse jetting experimental system for sintered board according to claim 1 is characterized in that: Two groups of guide wheels are arranged in the matching through hole, and the two groups of guide wheels are arranged on opposite sides of the inclined rod section in the axial direction of the positioning column, and the two groups of guide wheels are both in contact with the inclined rod section.

3. The pulse jetting experimental system for plastic sintered board according to claim 2 is characterized in that: The outer diameters of the oblique rod section and the straight rod section are the same.

4. The pulse jetting experimental system for sintered board according to claim 1 is characterized in that: The plurality of push posts are evenly spaced along the circumference of the adjustment ring.

5. The pulse jetting experimental system for sintered board according to claim 1 is characterized in that: The limiting rod is arranged close to an end of the adapting tube away from the adjusting ring.

6. The pulse jetting experimental system for sintered board according to claim 1 is characterized in that: Along the axial direction of the blowing pipe, a plurality of the blowing holes are evenly spaced.

7. The pulse jetting experimental system for sintered board according to claim 1 is characterized in that: The inner wall of the blowing pipe is provided with a mounting hole, the mounting hole is coaxially arranged with the blowing hole, the mounting hole is located on a side of the inner wall of the blowing pipe away from the blowing hole, and the positioning column can be slidably fitted in the mounting hole.

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