Connecting rod transmission transmission valve and conveying pipeline

Abstract

The utility model belongs to the technical field of valves, and discloses a connecting rod transmission transmission valve and a conveying pipeline. The connecting rod transmission transmission valve comprises a valve body, a valve hole is formed in the valve body in the flowing direction of a medium, a valve plate is arranged in the valve body, and a plurality of valve rods are connected to the valve plate in the length direction of the valve plate. A driving shell is arranged on one side of the valve body, the end, away from the valve plate, of the valve rod extends into the driving shell and is connected with sliding seats, guide rails corresponding to the sliding seats are arranged in the driving shell, and the sliding seats are slidably connected with the guide rails; and a driving piece is arranged in the driving shell and can move in the direction perpendicular to the flowing direction of the medium, and the driving piece and each sliding seat are in transmission through a connecting rod mechanism so as to drive all the valve rods to move synchronously when the driving piece moves, so that the valve holes are communicated or blocked. According to the connecting rod transmission transmission valve, the possibility of clamping stagnation generated when the valve rods move can be reduced, and the working stability of the connecting rod transmission transmission valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a connecting rod transmission valve and a transmission pipeline. Background Art

[0002] A transfer valve is a valve used to control the flow of a medium. It is used to adjust the pressure, flow, temperature or liquid level of the medium. The transfer valve connects or cuts off the medium flowing in the valve seat through the movement of the valve plate. The valve plate is usually driven by the valve stem, and the movement direction of the valve plate is perpendicular to the direction of medium flow.

[0003] There is an existing transmission valve, the length direction of which is perpendicular to the movement direction of the valve plate. In order to make the valve plate bear the force evenly, a single driving member is generally used to simultaneously drive two or more valve stems to move so as to move the valve plate. Due to the limitations of the processing accuracy and installation accuracy of the valve stems, it is impossible to ensure that the movement directions of the multiple valve stems are completely parallel. When a single driving member drives multiple non-parallel valve stems to move at the same time, the valve plate may easily get stuck during the movement, affecting the stability of the valve operation. Utility Model Content

[0004] The purpose of the utility model is to provide a connecting rod transmission transmission valve and a transmission pipeline to reduce the phenomenon of sticking when multiple valve stems are working and improve the working stability of the transmission valve.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A connecting rod transmission valve, comprising a valve body, a valve hole being formed on the valve body along the flow direction of the medium, a valve plate being provided inside the valve body, and a plurality of valve stems being connected to the valve plate along its length;

[0007] A drive housing is provided on one side of the valve body, and one end of the valve stem away from the valve plate extends into the interior of the drive housing and is connected to a sliding seat. A guide rail is provided inside the drive housing corresponding to each sliding seat, and the sliding seat is slidably connected to the guide rail;

[0008] A driving member is provided inside the driving housing, and the driving member can move in a direction perpendicular to the flow direction of the medium. The driving member and each sliding seat are transmitted through a connecting rod mechanism, so that when the driving member moves, all the valve stems are driven to move synchronously, so that the valve holes are connected or blocked.

[0009] Preferably, the connecting rod mechanism comprises:

[0010] a driving connecting rod, one end of which is hinged to the driving member via a first rotating shaft;

[0011] a swing link, one end of which is hinged to the other end of the drive link via a second rotating shaft, the other end of which is located on a side of the drive link away from the valve body, and the other end of which is hinged to the drive housing via a third rotating shaft; and

[0012] a driven connecting rod, one end of which is hinged to the sliding seat via a fourth rotating shaft, and the other end of which is hinged to the middle section of the swing connecting rod via a fifth rotating shaft;

[0013] The first rotating shaft, the second rotating shaft, the third rotating shaft, the fourth rotating shaft and the fifth rotating shaft are all arranged in parallel.

[0014] Preferably, the swing link includes a first rod portion and a second rod portion, an angle is formed between the first rod portion and the second rod portion, and a hinge point between the swing link and the driven link is located at a connection point between the first rod portion and the second rod portion.

[0015] Preferably, the angle between the first rod portion and the second rod portion is 90 degrees.

[0016] Preferably, two swing links are provided in parallel along the axis of the third rotating shaft, and the driving link and the swing link are located between the two swing links.

[0017] Preferably, an adjustment seat is provided inside the drive housing, and the other end of the swing link is hinged to the adjustment seat.

[0018] Preferably, the distance between the adjustment seat and the valve body is adjustable.

[0019] Preferably, bearings are sleeved on the exteriors of the first rotating shaft, the second rotating shaft, the third rotating shaft, the fourth rotating shaft and the fifth rotating shaft.

[0020] Preferably, the bearing is a needle roller bearing.

[0021] The delivery pipeline includes a pipeline body and a connecting rod transmission valve, and the connecting rod transmission valve is installed in the middle section of the pipeline body.

[0022] Beneficial effects of the utility model:

[0023] The connecting rod transmission valve of the utility model drives a single valve stem to move through a single connecting rod mechanism when the driving member moves, eliminates the rigid connection between the driving member and the valve stem, and multiple valve stems that are not completely parallel are each limited by a guide rail during the sliding process, so that the multiple valve stems can slide along a preset direction respectively. Even if there is a slight deviation in the movement direction of the multiple valve stems, they can still work normally, reducing the possibility of jamming when the multiple valve stems move, and improving the stability of the operation of the connecting rod transmission valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an exploded view of the connecting rod transmission valve of the present utility model;

[0025] Figure 2 It is a front view of the connecting rod transmission valve of the present utility model.

[0026] In the picture:

[0027] 1. Valve body; 11. Valve hole; 2. Valve plate; 3. Valve stem; 4. Drive housing; 41. Opening; 42. Waist hole; 43. Sliding hole; 5. Sliding seat; 51. Guide rail; 6. Drive member; 7. Connecting rod mechanism; 71. Drive connecting rod; 711. First rotating shaft; 72. Swing connecting rod; 721. First rod portion; 722. Second rod portion; 723. Second rotating shaft; 724. Third rotating shaft; 73. Driven connecting rod; 731. Fourth rotating shaft; 732. Fifth rotating shaft; 8. Adjusting seat; 81. Locking bolt; 82. Positioning screw. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0029] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] Refer to the following Figures 1 to 2 The connecting rod transmission valve and the transmission pipeline provided by the utility model are described.

[0033] The delivery pipeline includes a pipeline body and a connecting rod transmission valve, and the connecting rod transmission valve is installed in the middle section of the pipeline body.

[0034] Reference Figure 1 and Figure 2 The connecting rod transmission valve includes a valve body 1, a drive housing 4 is provided on one side of the valve body 1, and a valve hole 11 is opened in the valve body 1 along the flow direction of the medium. A valve plate 2 is provided inside the valve body 1, and multiple valve stems 3 are connected to the valve plate 2 along its length. The end of the valve stem 3 away from the valve plate 2 extends into the interior of the drive housing 4 and is connected to a sliding seat 5. A guide rail 51 is provided inside the drive housing 4 corresponding to each sliding seat 5. The sliding seat 5 is slidably connected to the guide rail 51. A driving member 6 is provided inside the drive housing 4. The driving member 6 can move in a direction perpendicular to the flow direction of the medium. The driving member 6 and each sliding seat 5 are driven by a connecting rod mechanism 7. When the driving member 6 moves, the valve plate 2 is driven to move synchronously, so that the valve hole 11 is connected or blocked.

[0035] Specifically, in this embodiment, the medium flows horizontally, and the length of the valve plate 2 is also horizontal and perpendicular to the medium flow direction. The drive housing 4 is located on top of the valve body 1. A sliding groove (not shown) is defined on the top of the valve body 1. The valve plate 2 slides within the sliding groove. That is, the valve plate 2 moves vertically, with the top of the valve plate 2 always located within the sliding groove. The sliding groove serves to guide and limit the position of the valve plate 2.

[0036] An opening 41 is provided on one side of the drive housing 4, and a cover plate (not shown) is detachably connected to the opening 41 by bolts, facilitating access to the interior of the drive housing 4. In this embodiment, the valve stem 3 is vertically arranged, and there are two valve stems 3. A sliding hole 43 communicating with the sliding groove is provided inside the drive housing 4, corresponding to each valve stem 3. The valve stem 3 is slidably arranged within the sliding hole 43.

[0037] Furthermore, the driving member 6 is arranged in a straight line, and the length direction of the driving member 6 is parallel to the length direction of the valve plate 2. The movement of the driving member 6 is driven by a cylinder, an oil cylinder or an electric cylinder. In this embodiment, the cylinder is taken as an example. The piston rod of the cylinder moves in the vertical direction. The piston rod of the cylinder is connected to the middle position of the driving member 6, and the two ends of the driving member 6 correspond to two connecting rod mechanisms 7 respectively.

[0038] Specifically, each linkage mechanism 7 includes a driving link 71, a swing link 72, and a driven link 73. One end of the driving link 71 is hinged to the end of the driving member 6 via a first rotating shaft 711. The swing link 72 is located above the driven link 73 and includes an integrally formed first rod portion 721 and a second rod portion 722. The first rod portion 721 and the second rod portion 722 form an angle between them. In this embodiment, the angle between the first rod portion 721 and the second rod portion 722 is 90 degrees, i.e., the swing link 72 is L-shaped. In other embodiments, the angle between the first rod portion 721 and the second rod portion 722 can also be 60 degrees, 85 degrees, or 95 degrees, etc., and can be adaptively adjusted as needed. The end of the second rod portion 722, remote from the first rod portion 721, is hinged to the other end of the driving link 71 via a second rotating shaft 723. The end of the first rod portion 721, remote from the second rod portion 722, is hinged to the drive housing 4 via a third rotating shaft 724. One end of the driven link 73 is hinged to the sliding seat 5 through the fourth rotating shaft 731, and the other end of the driven link 73 is hinged to the middle section of the swing link 72 through the fifth rotating shaft 732. The hinge point of the swing link 72 and the driven link 73 is located at the connection point of the first rod portion 721 and the second rod portion 722.

[0039] Based on the above, when the connecting rod transmission valve is closed, the first rod portion 721 and the driven connecting rod 73 are both in a vertical state, that is, the first rod portion 721 and the driven connecting rod 73 are collinear. When the first rod portion 721 is pushed by the driven connecting rod 73, the first rod portion 721 is not easy to rotate and has a certain locking effect, which can enable the valve plate 2 to stably block the valve hole 11.

[0040] When the connecting rod transmission valve is opened, the driving member 6 drives the driving connecting rod 71 to move upward, and the driving connecting rod 71 can drive the swinging connecting rod 72 to rotate around the axis of the third rotating shaft 724, that is, the swinging connecting rod 72 swings upward as a whole, which can drive the other end of the driven connecting rod 73 to gradually move upward, thereby driving the sliding seat 5 to move upward, causing the valve plate 2 to move upward, and realizing the opening of the connecting rod transmission valve.

[0041] Because the two ends of the driven link 73 are hinged to the swing link 72 and the sliding seat 5, respectively, the driven link 73, which is connected to the sliding seat 5, drives the sliding seat 5 to slide. As the sliding seat 5 slides, it is guided and limited only by the guide rail 51, while the driven link 73 only performs a pushing and pulling function. This reduces the possibility of the sliding seat 5 getting stuck during operation. In addition, the three connection points of the swing link 72 form a triangle, and the swing link 72 itself is integrally formed, which greatly improves the stability of the swing link 72 itself.

[0042] Furthermore, two swing links 72 are arranged parallel to the axis of the third rotating shaft 724, and the driving link 71 and the swing link 72 are located between the two swing links 72. The two swing links 72 work in coordination to further improve the working stability of the link mechanism 7.

[0043] In addition, the axes of the first rotating shaft 711, the second rotating shaft 723, the third rotating shaft 724, the fourth rotating shaft 731 and the fifth rotating shaft 732 are all parallel to the flow direction of the medium, and the outsides of the first rotating shaft 711, the second rotating shaft 723, the third rotating shaft 724, the fourth rotating shaft 731 and the fifth rotating shaft 732 are all provided with bearings. The bearings in this embodiment are needle roller bearings. The rollers of the needle roller bearings are thin and long. Although they have a small cross-section, they can still withstand a higher load. Therefore, when the above-mentioned rotating shafts rotate frequently, friction and wear can be effectively reduced, thereby improving the operating efficiency and life of the equipment.

[0044] Furthermore, an adjustment seat 8 is provided inside the drive housing 4, and an adjustment seat 8 is provided corresponding to the connection between each swing link 72 and the drive housing 4, and the distance between the adjustment seat 8 and the valve body 1 is adjustable. For example, in this embodiment, a waist hole 42 is opened on the drive housing 4 corresponding to each adjustment seat 8, and the length direction of the waist hole 42 is the vertical direction. A locking bolt 81 is passed through the inside of the waist hole 42. When the locking bolt 81 is tightened, the screw of the locking bolt 81 is threadedly connected to the adjustment seat 8, and the head of the locking bolt 81 abuts against the drive housing 4, thereby fixing the adjustment seat 8. When the position of the adjustment seat 8 needs to be adjusted, only the locking bolt 81 needs to be loosened, and then the position of the adjustment seat 8 can be adjusted to achieve the distance adjustment between the adjustment seat 8 and the valve body 1.

[0045] Based on the above, by setting a position-adjustable adjustment seat 8, the highest point of the swing link 72 can be adjusted to ensure that when the swing link 72 is at the bottom, the valve plate 2 can completely block the valve hole 11, and when the swing link 72 is at the top, the valve plate 2 can completely release the blockage of the valve hole 11.

[0046] In addition, a positioning screw 82 is threadedly connected to the top of each adjustment seat 8 on the drive housing 4. The positioning screw 82 abuts the top of the adjustment seat 8 to prevent the adjustment seat 8 from moving upward. In other embodiments, multiple threaded holes can be opened in the vertical direction on the drive housing 4 so that the locking bolt 81 can be fixed at different heights.

[0047] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A connecting rod transmission valve, comprising a valve body (1), wherein a valve hole (11) is provided on the valve body (1) along the flow direction of the medium, a valve plate (2) is provided inside the valve body (1), and a plurality of valve stems (3) are connected to the valve plate (2) along its length direction, characterized in that: A drive housing (4) is provided on one side of the valve body (1); one end of the valve stem (3) away from the valve plate (2) extends to the interior of the drive housing (4) and is connected to a sliding seat (5); a guide rail (51) is provided inside the drive housing (4) corresponding to each sliding seat (5); and the sliding seat (5) is slidably connected to the guide rail (51); A driving member (6) is provided inside the driving housing (4), and the driving member (6) is capable of moving in a direction perpendicular to the flow direction of the medium. The driving member (6) and each of the sliding seats (5) are transmitted via a connecting rod mechanism (7), so that when the driving member (6) moves, all the valve stems (3) are driven to move synchronously, so that the valve holes (11) are connected or blocked.

2. The connecting rod transmission valve according to claim 1, characterized in that: The connecting rod mechanism (7) comprises: a driving connecting rod (71), one end of which is hinged to the driving member (6) via a first rotating shaft (711); a swing link (72), one end of the swing link (72) being hinged to the other end of the drive link (71) via a second rotating shaft (723), the other end of the swing link (72) being located on a side of the drive link (71) away from the valve body (1), and the other end of the swing link (72) being hinged to the drive housing (4) via a third rotating shaft (724); and A driven connecting rod (73), one end of the driven connecting rod (73) is hinged to the sliding seat (5) via a fourth rotating shaft (731), and the other end of the driven connecting rod (73) is hinged to the middle section of the swing connecting rod (72) via a fifth rotating shaft (732); The first rotating shaft (711), the second rotating shaft (723), the third rotating shaft (724), the fourth rotating shaft (731) and the fifth rotating shaft (732) are all arranged in parallel.

3. The connecting rod transmission valve according to claim 2, characterized in that: The swing link (72) comprises a first rod portion (721) and a second rod portion (722), wherein an angle is formed between the first rod portion (721) and the second rod portion (722), and a hinge point between the swing link (72) and the driven link (73) is located at a connection point between the first rod portion (721) and the second rod portion (722).

4. The connecting rod transmission valve according to claim 3, characterized in that: The included angle between the first rod portion (721) and the second rod portion (722) is 90 degrees.

5. The connecting rod transmission valve according to any one of claims 2 to 4, characterized in that: Two swing links (72) are arranged in parallel along the axis of the third rotating shaft (724), and the driving link (71) and the swing link (72) are located between the two swing links (72).

6. The connecting rod transmission valve according to any one of claims 2 to 4, characterized in that: An adjustment seat (8) is provided inside the drive housing (4), and the other end of the swing link (72) is hinged to the adjustment seat (8).

7. The connecting rod transmission valve according to claim 6, characterized in that: The distance between the adjustment seat (8) and the valve body (1) is adjustable.

8. The connecting rod transmission valve according to any one of claims 2 to 4, characterized in that: The first rotating shaft (711), the second rotating shaft (723), the third rotating shaft (724), the fourth rotating shaft (731) and the fifth rotating shaft (732) are all sleeved with bearings on their exteriors.

9. The connecting rod transmission valve according to claim 8, characterized in that: The bearing is a needle roller bearing.

10. A delivery pipeline, comprising a pipeline body, characterized in that: The delivery pipeline further includes a connecting rod transmission valve as described in any one of claims 1 to 9, and the connecting rod transmission valve is installed in the middle section of the pipeline body.

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