Control valve and pneumatic transport system

Abstract

The present disclosure relates to a control valve and a pneumatic conveying system. The control valve comprises a valve housing having an air inlet; a first valve plate tiltable to a fluid flow direction and arranged in the valve housing, and in a tilted state, a first edge of the first valve plate is closer to the air inlet than a second edge on the opposite side, wherein the first edge is connected to an inner wall of the valve housing, and a gap between the second edge and the inner wall of the valve housing is openable and closable for fluid passing; and an adjusting part for driving the first valve plate to move to change the size of the gap. The adjusting part can drive the first valve plate to move to change the size of the gap, thereby achieving flow regulation. The first valve plate can be tilted to the fluid flow direction, i.e. can form an acute angle with the fluid flow direction. Compared with the scheme perpendicular to the fluid flow direction, the first valve plate has a guiding effect on the air flow, which can ensure the smoothness of the air flow and prevent vortex flow and material stacking and blocking.

Description

Technical Field

[0001] This disclosure relates to the field of control valve technology, and more specifically, to a control valve and a pneumatic transport system. Background Technology

[0002] In pneumatic conveying systems, control valves typically adjust the flow opening by raising and lowering a valve plate perpendicular to the airflow direction. When these valves are used for material conveying, material blockage is prone to occur when the valve plate is at a small opening. Material accumulates at the edge of the valve plate, causing conveying interruptions, especially when conveying soft materials (such as foil). Furthermore, the valve plate structure perpendicular to the airflow creates eddies as the airflow passes through, disrupting the stable flow field and further reducing conveying efficiency and system reliability. Utility Model Content

[0003] The purpose of this disclosure is to provide a control valve and a pneumatic conveying system to at least partially solve the problems existing in the related art.

[0004] To achieve the above objectives, this disclosure provides a control valve, comprising: Valve housing with air inlet; A first valve plate is inclinedly disposed within the valve housing in the direction of fluid flow, and in the inclined state, a first edge of the first valve plate is closer to the air inlet than a second edge on the opposite side, wherein the first edge is connected to the inner wall of the valve housing, and an openable and closable gap for fluid passage is provided between the second edge and the inner wall of the valve housing; and An adjustment unit is used to drive the first valve plate to move in order to change the size of the gap.

[0005] Optionally, the first edge is rotatably connected to the inner wall of the valve housing and configured to slide along the fluid flow direction, and the adjustment unit is configured to drive the first edge to move along the fluid flow direction when the second edge is driven to move vertically along the fluid.

[0006] Optionally, the inner wall of the valve housing is provided with a first groove extending along the fluid flow direction and a second groove extending vertically along the fluid direction. Wherein, the two ends of the first edge are respectively provided with a first protrusion extending into the corresponding first groove; the two ends of the second edge are respectively provided with a second protrusion extending into the corresponding second groove.

[0007] Optionally, the first edge is provided with a long column extending along the length direction of the first edge, the long column abutting against the first top wall of the valve housing, and the two ends of the long column are respectively used as the first protrusion; the second edge is provided with at least one shaft hole and a pin passing through the at least one shaft hole, the two ends of the pin are respectively used as the second protrusion.

[0008] Optionally, the adjusting part is used to drive the pin to move vertically along the fluid.

[0009] Optionally, the adjustment unit includes: A threaded sleeve and a threaded rod, each extending perpendicularly to the fluid and coaxially threaded together, wherein the first of the threaded sleeve and the threaded rod is connected to the pin; and A driving element is used to drive the second of the threaded rod and the threaded sleeve to rotate, thereby causing the first to move vertically along the fluid.

[0010] Optionally, the adjustment part further includes a housing disposed outside the first top wall, the threaded sleeve is connected to the pin, and one end of the threaded rod away from the threaded sleeve protrudes through the second top wall of the housing; the driving member includes an adjustment knob connected to the end of the threaded rod away from the threaded sleeve and abutting against the outer surface of the second top wall, and the threaded rod has an annular flange abutting against the inner surface of the second top wall.

[0011] Optionally, the inner surface is provided with a groove into which the annular flange extends, and the adjustment part further includes a seal that seals between the groove and the annular flange.

[0012] Optionally, at least a portion of the first sidewall of the housing is made transparent and has scale markings, the end of the threaded sleeve away from the pin extends into the housing, and the adjustment part further includes an indicator needle disposed on the threaded sleeve and pointing to the scale markings.

[0013] Optionally, the first valve plate may form a windward surface facing the air inlet, and the control valve further includes an elastic plate, the first edge of which is fixed to the first top wall of the valve housing, the first edge being located on the side of the first edge near the air inlet and projected in the direction of fluid flow, the first edge covering the first edge, and the second edge of the elastic plate being elastically pressed against the windward surface.

[0014] Optionally, the valve housing also has an air outlet, and the control valve further includes a first pipe connector disposed at the air inlet and a second pipe connector disposed at the air outlet.

[0015] Optionally, the valve housing includes a first top wall, a bottom wall, and two second side walls connected between the first top wall and the bottom wall. Wherein, the first edge abuts against the first top wall; the two side edges of the first valve plate abut against the two second side walls; and the gap may be formed between the second edge and the bottom wall.

[0016] Optionally, the system further includes a second valve plate disposed within the valve housing, the valve housing also having an air outlet. The second valve plate is disposed within the valve housing at an angle to the fluid flow direction, and in the inclined state, the third edge of the second valve plate is closer to the air outlet than the fourth edge on the opposite side, so that the second valve plate can form a guide surface toward the air outlet, and the fourth edge is connected to the second edge to follow the movement.

[0017] Optionally, the first valve plate and the second valve plate are arranged symmetrically.

[0018] According to a second aspect of this disclosure, a pneumatic transport system is provided, including a pipeline and the aforementioned control valve, the control valve being installed in the pipeline.

[0019] Through the above technical solution, the regulating unit can drive the first valve plate to move to change the size of the gap, thereby realizing flow regulation. The first valve plate can be tilted relative to the fluid flow direction, that is, it can form an acute angle with the fluid flow direction. Compared with the solution that is perpendicular to the fluid flow direction, the first valve plate has a guiding effect on the airflow, which can ensure the smoothness of the airflow, prevent the generation of eddies, and prevent material accumulation and blockage.

[0020] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of a control valve exemplarily shown according to this disclosure; Figure 2 yes Figure 1 The control valve shown in the figure is a cross-sectional view. Figure 3 yes Figure 1 The front view of the control valve is shown in the image; Figure 4 yes Figure 3 The control valve shown in the figure is a cross-sectional view along the AA direction; Figure 5 yes Figure 4 A magnified view of part A in the middle; Figure 6 yes Figure 3 The side view of the control valve shown in the image; Figure 7 yes Figure 6 The control valve shown in the figure is a cross-sectional view along the BB direction; Figure 8 This is a schematic diagram of a second sidewall exemplarily shown according to this disclosure; Figure 9 This is a schematic diagram of a first valve plate exemplarily shown according to this disclosure.

[0022] Explanation of reference numerals in the attached figures 1-Valve housing; 11-First top wall; 12-Bottom wall; 13-Second side wall; 14-Gap; 101-Air inlet; 102-Air outlet; 2-First valve plate; 21-First edge; 22-Second edge; 23-Windward surface; 24-Long column; 25-Shaft hole; 26-Pin; 27-Side edge; 3-Adjusting part; 31-Threaded sleeve; 32-Threaded rod; 321-Annular flange; 33-Driver; 34-Housing; 341-Second top wall; 342 - Groove; 343 First sidewall; 344 Scale mark; 35 Seal; 36 Indicator needle; 401 First groove; 402 Second groove; 403 Third groove; 501 First protrusion; 502 Second protrusion; 503 Third protrusion; 6 Elastic plate; 61 First edge; 62 Second edge; 71 First pipe joint; 72 Second pipe joint; 8 Second valve plate; 81 Third edge; 82 Fourth edge; 83 Guide surface. Detailed Implementation

[0023] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0024] In this disclosure, unless otherwise stated, directional terms such as "fluid flow direction" refer to the direction of fluid flow through the control valve, as detailed in the following references. Figure 1 The direction of the middle arrow; "fluid vertical" and "top / bottom" refer to... Figures 1 to 7 The orientation of the drawing can be found in the reference diagram. Figure 1 The direction of the middle arrow indicates the vertical direction of the fluid and the top and bottom directions. The top refers to the higher position in the drawing, and the bottom refers to the lower position in the drawing. In actual use, the "vertical direction of the fluid" and "top and bottom" can be adapted to the installation angle of the control valve. For example, the top wall can be located below or to the left of the bottom wall. The terms "inner" and "outer" are defined based on the structure itself.

[0025] The terms "first" and "second" are used to distinguish one element from another and do not imply any order or importance. Furthermore, in the following description, when referring to the accompanying drawings, the same reference numerals in different drawings denote the same or similar elements, which will not be repeated here.

[0026] Reference Figures 1-7This disclosure exemplarily illustrates a control valve, including a valve housing 1 having an air inlet 101, a first valve plate 2 tiltably disposed within the valve housing 1 in the direction of fluid flow, and an adjusting part 3. When the first valve plate 2 is tilted, its first edge 21 is closer to the air inlet 101 than its opposite second edge 22. The first edge 21 is connected to the inner wall of the valve housing 1, and an openable and closable gap 14 for fluid passage exists between the second edge 22 and the inner wall of the valve housing 1. The adjusting part 3 drives the first valve plate 2 to move and change the size of the gap 14. Here, the first edge 21 and the second edge 22 of the first valve plate 2 are relative, and both are... Figures 1-7 The attached diagram shows one edge above the other. In actual use, the spatial positions of the first edge 21 and the second edge 22 can be varied according to the installation angle of the control valve. For example, the control valve can be positioned relative to... Figures 1-7 With the angles reversed, the first edge 21 is located on the lower side, and the second edge 22 is located on the upper side. It should be explained that the aforementioned "inclined to the fluid flow direction" means that the first valve plate 2 forms an acute angle with the fluid flow direction, thereby having a guiding effect.

[0027] In some embodiments of this disclosure, when the second edge 22 is moved to the first limit position, the first edge 21 and the second edge 22 can be aligned, that is, the first valve plate 2 is parallel to the fluid flow direction, which is the maximum opening of the control valve; when the second edge 22 is moved to the second limit position, the first valve plate 2 is perpendicular to the fluid flow direction, which is the minimum opening of the control valve (closed state). Of course, in other embodiments, when the second edge 22 is moved to the first and second limit positions, the first valve plate 2 can still be tilted relative to the fluid flow direction.

[0028] This disclosure does not limit the installation and fitting form of the first valve plate 2 and the valve housing 1, nor does it limit the specific structure of the adjusting part 3, as long as it can drive the first valve plate 2 to move inside the valve housing 1 to change the size of the gap 14 between the second edge 22 and the inner wall of the valve housing 1. The specific structure will be described below.

[0029] By using the above technical solution, the regulating unit 3 can drive the first valve plate 2 to move to change the size of the gap 14, thereby realizing flow regulation. The first valve plate 2 can be inclined relative to the fluid flow direction, that is, it can form an acute angle with the fluid flow direction. Compared with the solution that is perpendicular to the fluid flow direction, the first valve plate 2 has a guiding effect on the airflow, which can ensure the smoothness of the airflow, prevent the generation of eddies, and prevent material accumulation and blockage.

[0030] This disclosure does not limit the movement of the first valve plate 2. For example, in some embodiments of this disclosure, the first edge 21 is rotatably connected to the inner wall of the valve housing 1 and configured to slide along the fluid flow direction. The adjusting part 3 can be configured to drive the first edge 21 to move along the fluid flow direction when the second edge 22 moves vertically along the fluid. The adjusting part 3 can drive the first edge 21 to move synchronously by only driving the second edge 22 to move vertically along the fluid, thereby achieving complex angle changes of the first valve plate 2. This is convenient and quick to operate, greatly simplifies the control valve structure, and reduces production costs. The purpose of rotatably connecting the first edge 21 is that when the second edge 22 moves vertically along the fluid, the first edge 21 can rotate relative to the inner wall of the valve housing 1 and move along the fluid flow direction. Without rotational engagement, jamming will occur. Here, "vertical fluid" refers to a direction perpendicular to the fluid flow direction. When the second edge 22 moves in this direction, the size of the gap 14 can be changed.

[0031] In addition, in some other embodiments, the first edge 21 can be rotatably mounted on the inner wall of the valve housing 1, and the second edge 22 can be slidably mounted on the inner wall of the valve housing 1 along an arc, so that the first valve plate 2 can rotate about the first edge 21 as a pivot, thereby changing the size of the aforementioned gap 14.

[0032] Reference Figure 8 In some embodiments of this disclosure, the inner wall of the valve housing 1 may be provided with a first groove 401 extending along the fluid flow direction and a second groove 402 extending vertically along the fluid direction. It should be noted that... Figure 8 Only one first groove 401 and one second groove 402 are shown on one side wall. A similar first groove 401 and second groove 402 are also shown on the other side wall of the valve housing 1. First protrusions 501 extending into the corresponding first groove 401 can be provided at both ends of the first edge 21. Second protrusions 502 extending into the corresponding second groove 402 can be provided at both ends of the second edge 22. The grooves and protrusions, in cooperation, guide and limit the movement of the first valve plate 2, enabling it to move along a preset trajectory.

[0033] This disclosure does not limit the aforementioned first protrusion 501 and second protrusion 502, see reference. Figure 2 and Figure 9In some embodiments, the first edge 21 may be provided with a long column 24 extending along the length direction of the first edge 21. The long column 24 can abut against the first top wall 11 of the valve housing 1, thereby restricting fluid flow into the gap between the first edge 21 and the first top wall 11 of the first valve plate 2. Furthermore, the circular outer contour of the long column 24 on the first edge 21 of the first valve plate 2 facilitates the rotation of the first valve plate 2 relative to the inner wall of the valve housing 1, avoiding jamming or interference. The two ends of the long column 24 can be used as first protrusions 501, respectively. The second edge 22 may be provided with at least one shaft hole 25 and a pin 26 passing through the at least one shaft hole 25. The two ends of the pin 26 are used as second protrusions 502, respectively. This disclosure does not limit the shaft hole 25; it can be directly formed in and through the second edge 22, or it can be... Figure 9 The diagram shows two mutually spaced lugs, each forming a shaft hole 25. This fit between the shaft hole 25 and the pin 26 allows for relative rotation when the pin 26 and the second edge 22 move simultaneously along the vertical direction of the fluid, thus avoiding motion interference.

[0034] In addition to the above embodiments, in some other embodiments, the aforementioned first protrusion 501 and second protrusion 502 can be protrusion structures directly formed at both ends of the first edge 21 and the second edge 22, wherein the protrusion structure corresponding to the second protrusion 502 can rotate relative to the first valve plate 2.

[0035] In some embodiments of this disclosure, the adjusting part 3 can be used to drive the pin 26 to move vertically along the fluid. Thus, when the pin 26 moves, it can drive the second edge 22 to move vertically along the fluid, which in turn drives the first edge 21 to move along the fluid flow direction. The synchronous movement of the first edge 21 and the second edge 22 can realize the angle change of the first valve plate 2, that is, realize the opening adjustment of the control valve. Complex angle changes of the first valve plate 2 can be achieved through a single fluid-vertical adjusting part 3, making operation convenient and quick, greatly simplifying the control valve structure and reducing production costs.

[0036] This disclosure does not impose any restrictions on the specific structure of the regulating section 3; see reference to... Figure 2 In some embodiments of this disclosure, the adjusting part 3 may include a driving member 33 and a threaded sleeve 31 and a threaded rod 32 that extend vertically along the fluid and are coaxially screwed together. The first of the threaded sleeve 31 and the threaded rod 32 is connected to a pin 26. The driving member 33 drives the second of the threaded rod 32 and the threaded sleeve 31 to rotate, thereby causing the first to move vertically along the fluid. When the driving member 33 drives the first of the threaded rod 32 and the threaded sleeve 31 to rotate, the second is fixed to the pin 26, and the two ends of the pin 26 extend into corresponding grooves, preventing it from rotating. Therefore, the second can only move vertically along the fluid, thereby driving the pin 26 to move in the height direction.

[0037] In addition to the aforementioned structure, in some other embodiments, the adjusting part 3 may also include a crank-slider structure, wherein the crank part is connected to the drive member 33 to follow the rotation, and the slider is connected to the pin 26 to drive it to move vertically along the fluid.

[0038] Reference Figures 1-7 In some embodiments of this disclosure, the adjusting part 3 may further include a housing 34 disposed outside the first top wall 11, a threaded sleeve 31 connected to a pin 26, and a threaded rod 32 with one end away from the threaded sleeve 31 extending through the second top wall 341 of the housing 34. The driving member 33 may include an adjusting knob connected to the end of the threaded rod 32 away from the threaded sleeve 31 and abutting against the outer surface of the second top wall 341. The adjusting knob may be fixed to the threaded rod 32 by screws. The threaded rod 32 may have an annular flange 321 abutting against the inner surface of the second top wall 341. By cooperating with the adjusting knob and the annular flange 321, the vertical movement of the threaded rod 32 along the fluid can be restricted, allowing it to rotate only about its own axis, thereby driving the threaded sleeve 31 screwed to it to move vertically along the fluid. By providing an adjusting knob, the user can directly drive the threaded rod 32 to rotate by rotating the adjusting knob. Of course, a drive motor may also be used instead of an adjusting knob.

[0039] Reference Figure 5 In some embodiments of this disclosure, the inner surface may be provided with a groove 342 into which the annular flange 321 extends. The adjusting part 3 may also include a sealing member 35 sealing between the groove 342 and the annular flange 321. This design can prevent external moisture, impurities, etc. from entering the interior of the housing 34 through the gap between the threaded rod 32 and the second top wall 341. Furthermore, in Figure 2 In the illustrated embodiment, housing 34 and valve housing 1 are in communication. In this case, seal 35 can prevent pressure leakage within valve housing 1. This disclosure does not limit seal 35; it can be a sealing ring. Because the sealing ring is elastic, it still allows the threaded rod 32 to rotate when compressed.

[0040] Reference Figure 2 and Figure 4 In some embodiments of this disclosure, at least a portion of the first sidewall 343 of the housing 34 is made transparent and has scale markings 344. The end of the threaded sleeve 31 away from the pin 26 extends into the housing 34. The adjusting part 3 may also include an indicator needle 36 disposed on the threaded sleeve 31 and pointing to the scale markings 344, specifically fixed to the outer periphery of the threaded sleeve 31 by screws. With this design, when the threaded sleeve 31 moves along the height direction, the indicator needle 36 can follow the movement, and the specific position of the indicator needle 36 can be observed through the transparent first sidewall 343 to determine the opening degree of the control valve.

[0041] Reference Figure 2 and Figure 7 The first valve plate 2 can form a windward surface 23 facing the air inlet 101. The control valve may also include an elastic plate 6. The first edge 61 of the elastic plate 6 can be fixed to the first top wall 11 of the valve housing 1. The first edge 61 can be located on the side of the first edge 21 near the air inlet 101, and in the projection of the fluid flow direction, the first edge 61 covers the first edge 21. The second edge 62 of the elastic plate 6 can be elastically pressed against the windward surface 23. With this design, the fluid in the air inlet 101 can flow entirely to the windward surface 23 under the guidance of the elastic plate 6, preventing it from flowing away from the gap between the first edge 21 and the inner wall of the valve housing 1. The elastic performance of the elastic plate 6 ensures that the second edge 62 of the elastic plate 6 can be elastically pressed against the windward surface 23 when the first valve plate 2 moves to any angle.

[0042] Reference Figure 7 In some embodiments of this disclosure, the first side 61 of the elastic plate 6 can be bolted to the first top wall 11, and the whole plate can be bent by applying external force so that the second side 62 is elastically pressed against the windward surface 23. The elastic force used for pressing can be generated by its own structural deformation.

[0043] Reference Figure 1 In some embodiments of this disclosure, the valve housing 1 further includes an air outlet 102, and the control valve may further include a first pipe connector 71 disposed at the air inlet 101 and a second pipe connector 72 disposed at the air outlet 102. The pipe connectors facilitate communication with upstream and downstream pipelines.

[0044] This disclosure does not limit the specific shape of the valve housing 1; see reference... Figure 1In some embodiments of this disclosure, the valve housing 1 may include a first top wall 11, a bottom wall 12, and two second side walls 13 connecting the first top wall 11 and the bottom wall 12, i.e., the cross-section of the valve housing 1 is rectangular. The first edge 21 may abut against the first top wall 11, and the two side edges 27 of the first valve plate 2 may abut against the two second side walls 13. The aforementioned gap 14 may be formed between the second edge 22 and the bottom wall 12. By abutting the first edge 21 and the two side edges 27 of the first valve plate 2 against the inner wall of the valve housing 1, fluid can only pass through the gap 14 between the second edge 22 and the bottom wall 12. In this case, the two side edges of the aforementioned elastic plate 6 may also abut against the two second side walls 13. This design, with the first edge 21 and the two side edges 27 abutting against the inner wall of the valve housing 1, forms a three-sided sealing structure. This completely blocks unintended leakage of fluid from above and sides of the first valve plate 2, forcing fluid to pass only through the bottom opening. This ensures precise flow control, prevents bypass or eddies from forming within the valve housing 1, and reduces energy waste. Furthermore, the bottom opening, as the sole flow channel, allows for flexible flow control by adjusting the opening size. The three-sided sealing also concentrates the fluid flow direction, stabilizes the flow velocity, reduces localized erosion of the inner wall of the valve housing 1, and extends equipment life. Especially when used for pneumatic conveying, the three-sided sealing prevents particulate materials from leaking or stagnating from the sides or top of the first valve plate 2, while the bottom opening allows materials to pass through in a concentrated manner with the airflow, reducing collisions and wear between particles. Simultaneously, the opening adjustment precisely matches the pressure and flow requirements of the pneumatic conveying, ensuring the continuity and stability of material transport.

[0045] Reference Figure 2 and Figure 7 In some embodiments of this disclosure, the control valve may further include a second valve plate 8 disposed within a valve housing 1, and the valve housing 1 may also have an air outlet 102. The second valve plate 8 may be disposed in the valve housing 1 at an angle to the fluid flow direction, and in the inclined state, the third edge 81 of the second valve plate 8 is closer to the air outlet 102 than the fourth edge 82 on the opposite side, so that the second valve plate 8 can form a guide surface 83 facing the air outlet 102, and the fourth edge 82 is connected to the second edge 22 to follow the movement. With this design, the fourth edge 82 of the second valve plate 8 is connected to the second edge 22 of the first valve plate 2, so that when the first valve plate 2 moves, it can directly drive the second valve plate 8 to follow the movement, without the need for an additional driving device, simplifying the overall structure and saving space and cost. From the perspective of fluid control, the second valve plate 8 forms a guide surface 83 facing the air outlet 102, which can guide the fluid flow to the air outlet 102, effectively avoiding eddies generated downstream of the first valve plate 2 due to sudden changes in fluid direction or flow velocity. Reduce energy loss, decrease the impact of eddies on the inner wall of valve housing 1, and extend equipment life. When used for pneumatic conveying, the guide surface 83 can guide the material to flow along a preset path to the air outlet 102, avoiding material stagnation or accumulation due to eddies and ensuring smooth transportation.

[0046] In some embodiments of this disclosure, the third edge 81 may be configured to be rotatably mounted on the inner wall of the valve housing 1 and to slide along the fluid flow direction. When the fourth edge 82 follows the second edge 22 to move vertically along the fluid, it may drive the third edge 81 to slide along the fluid flow direction, thereby realizing the angle adjustment of the second valve plate 8.

[0047] Reference Figure 2 This disclosure does not limit how the fourth edge 82 and the second edge 22 are connected. For example, in some embodiments, the structure of the second valve plate 8 can be the same as that of the first valve plate 2, and its fourth edge 82 can also form a shaft hole. The pin 26 passes through the shaft holes at the positions of the second edge 22 and the fourth edge 82 simultaneously. Specifically, the second edge 22 and the fourth edge 82 can each be provided with two lugs with shaft holes 25, and the multiple lugs are arranged in a staggered manner, so that the pin 26 can pass through multiple shaft holes 25 in sequence.

[0048] Reference Figure 8 In some embodiments of this disclosure, the inner wall of the valve housing 1 may be provided with a third groove 403 extending along the fluid flow direction, and the two ends of the third edge 81 are respectively provided with third protrusions 503 extending into the corresponding third groove 403. Through the cooperation of the groove and the protrusion, the movement of the second valve plate 8 can be guided and limited, so that it can move along a preset trajectory.

[0049] Reference Figure 7 In some embodiments of this disclosure, the first valve plate 2 and the second valve plate 8 can be arranged symmetrically. This symmetrical design allows for more uniform fluid flow, avoiding flow deviation and localized high pressure. The two sides work together to suppress eddies, improving flow guiding efficiency. Furthermore, the opening degrees of both sides change synchronously during flow regulation, ensuring stable fluid flow and reducing material deposition. In addition, the symmetrical structure allows for reusable valve plate designs, reducing manufacturing and maintenance costs, providing high spare parts versatility, and reducing energy loss and long-term operating energy consumption.

[0050] According to a second aspect of this disclosure, a pneumatic transport system is provided, including a pipeline and the aforementioned control valve, wherein the control valve is installed in the pipeline. Since the pneumatic transport system has all the beneficial effects of the aforementioned control valve, further details are omitted here.

[0051] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0053] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A control valve, characterized in that, include: Valve housing with air inlet; A first valve plate is inclinedly disposed within the valve housing in the direction of fluid flow, and in the inclined state, a first edge of the first valve plate is closer to the air inlet than a second edge on the opposite side, wherein the first edge is connected to the inner wall of the valve housing, and an openable and closable gap for fluid passage is provided between the second edge and the inner wall of the valve housing; and An adjustment unit is used to drive the first valve plate to move in order to change the size of the gap.

2. The control valve according to claim 1, characterized in that, The first edge is rotatably connected to the inner wall of the valve housing and is configured to slide along the fluid flow direction. The adjustment unit is configured to drive the first edge to move along the fluid flow direction when the second edge is driven to move vertically along the fluid.

3. The control valve according to claim 2, characterized in that, The inner wall of the valve housing is provided with a first groove extending along the fluid flow direction and a second groove extending vertically along the fluid. Wherein, the two ends of the first edge are respectively provided with a first protrusion extending into the corresponding first groove; the two ends of the second edge are respectively provided with a second protrusion extending into the corresponding second groove.

4. The control valve according to claim 3, characterized in that, The first edge is provided with a long column extending along the length direction of the first edge, the long column abutting against the first top wall of the valve housing, and the two ends of the long column respectively serving as the first protrusion; the second edge is provided with at least one shaft hole and a pin passing through the at least one shaft hole, the two ends of the pin respectively serving as the second protrusion. The adjusting part is used to drive the pin to move vertically along the fluid.

5. The control valve according to claim 4, characterized in that, The adjustment unit includes: A threaded sleeve and a threaded rod, each extending perpendicularly to the fluid and coaxially threaded together, wherein the first of the threaded sleeve and the threaded rod is connected to the pin; and A driving element is used to drive the second of the threaded rod and the threaded sleeve to rotate, thereby causing the first to move vertically along the fluid.

6. The control valve according to claim 5, characterized in that, The adjustment part further includes a housing disposed outside the first top wall, the threaded sleeve is connected to the pin, and the end of the threaded rod away from the threaded sleeve protrudes through the second top wall of the housing; the driving member includes an adjustment knob connected to the end of the threaded rod away from the threaded sleeve and abutting against the outer surface of the second top wall, and the threaded rod has an annular flange abutting against the inner surface of the second top wall.

7. The control valve according to claim 6, characterized in that, The first sidewall of the housing is at least partially transparent and has scale markings. The end of the threaded sleeve away from the pin extends into the housing. The adjustment part also includes an indicator needle disposed on the threaded sleeve and pointing to the scale markings.

8. The control valve according to claim 1, characterized in that, The first valve plate can form a windward surface facing the air inlet. The control valve also includes an elastic plate. The first edge of the elastic plate is fixed to the first top wall of the valve housing. The first edge is located on the side of the first edge near the air inlet and is projected in the direction of fluid flow. The first edge covers the first edge. The second edge of the elastic plate is elastically pressed against the windward surface.

9. The control valve according to any one of claims 1-8, characterized in that, It also includes a second valve plate disposed within the valve housing, the valve housing having an air outlet, the second valve plate being disposed within the valve housing at an angle to the fluid flow direction, and in the tilted state, the third edge of the second valve plate being closer to the air outlet than the fourth edge on the opposite side, so that the second valve plate can form a guide surface toward the air outlet, the fourth edge being connected to the second edge to follow the movement.

10. A pneumatic transport system, characterized in that, It includes a pipeline and a control valve according to any one of claims 1-9, wherein the control valve is installed in the pipeline.

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