Opening and closing state feedback mechanism of disc valve

Abstract

The utility model relates to the technical field of valve opening and closing state detection, in particular to a disc valve opening and closing state feedback mechanism which comprises a connecting hole formed in a rotating arm, a feedback rod and a limiting switch, the feedback rod comprises a vertical rod and a transverse rod, one end of the vertical rod is fixedly connected with the rotating arm through the connecting hole, and the other end of the vertical rod is detachably connected with the transverse rod; a connecting rod is arranged between the transverse rod and the limiting switch, one end of the connecting rod is rotationally connected with the transverse rod, and the other end of the connecting rod is fixedly connected with a transmission shaft of the limiting switch. The problems that an existing feedback rod is prone to being broken or deformed when the valve is disassembled and assembled, the installation position and angle of the feedback rod cannot be guaranteed when the feedback rod and a rotating arm are directly welded and fixed, and therefore feedback of the opening and closing states of the disc valve is inaccurate are solved.

Description

Technical Field

[0001] The present application relates to the technical field of valve opening and closing state detection, and in particular to an opening and closing state feedback mechanism for a disc valve. Background Art

[0002] The disc valve is a fluid control device widely used in pipeline systems. Its main function is to regulate and cut off the fluid. With the continuous improvement of industrial automation level, the accuracy, reliability and real-time feedback of the opening and closing status of the disc valve are particularly important.

[0003] At present, the opening and closing status feedback of the disc valve is mainly achieved by fixing one end of the feedback rod to the rotating arm connecting the valve stem and the cylinder piston rod, and the other end to the transmission shaft of the feedback device or limit switch. The piston rod is extended and retracted to drive the disc valve to open and close through the rotating arm, and the feedback rod drives the transmission shaft of the feedback device or limit switch to rotate, thereby transmitting the disc valve opening and closing signal to the outside.

[0004] However, in actual scenarios, the feedback rod is mostly an integrated inverted L-shaped rod with a long length, which is easy to break or deform when the valve is disassembled and assembled; and the feedback rod and the rotating arm are often fixed by direct welding on site, which cannot accurately guarantee the installation position and angle of the feedback rod, and thus cannot accurately feedback the opening and closing status of the disc valve. Summary of the Invention

[0005] The present application aims to solve the problems that the existing feedback rod is easily broken or deformed when the valve is disassembled and assembled, and the feedback rod cannot be guaranteed to have an installation position and angle when it is directly welded to the rotating arm, thereby causing inaccurate feedback on the opening and closing status of the disc valve. The present application provides a disc valve opening and closing status feedback mechanism, in which the feedback rod in the feedback mechanism is detachable to facilitate the disassembly and assembly of the valve, and the installation position of the feedback rod on the rotating arm is fixed, which can ensure the installation position and angle of the feedback rod.

[0006] In order to solve the above problems, the technical solution of this application is:

[0007] A disc valve opening and closing status feedback mechanism includes a connecting hole, a feedback rod and a limit switch provided on a rotating arm. The feedback rod includes a vertical rod and a horizontal rod. One end of the vertical rod is fixedly connected to the rotating arm through the connecting hole, and the other end is detachably connected to the horizontal rod. A connecting rod is provided between the horizontal rod and the limit switch. One end of the connecting rod is rotatably connected to the horizontal rod, and the other end is fixedly connected to the transmission shaft of the limit switch.

[0008] According to the scheme, the connecting hole is arranged on the rotating arm to connect the feedback rod, so that the feedback rod can be accurately positioned during installation, thereby reducing installation errors, ensuring the accuracy of the installation position and angle of the feedback rod, and enabling the feedback mechanism to accurately transmit state information during the opening and closing of the disc valve; meanwhile, the feedback rod is divided into a detachable vertical rod and a horizontal rod, so that the vertical rod or the horizontal rod can be individually disassembled during valve maintenance, repair or replacement, without the need to remove the feedback mechanism as a whole, thereby effectively reducing maintenance time and reducing damage or deformation of the feedback rod caused by improper operation or component collision; thereby ensuring the installation accuracy and operation convenience of the disc valve opening and closing state feedback mechanism, and enhancing the durability thereof.

[0009] Based on the above scheme, the utility model still can make improvement as follows:

[0010] Optionally, the connecting hole is a threaded hole, and one end of the vertical rod fixedly connected with the rotating arm is provided with a thread matched with the thread of the connecting hole, so as to facilitate adjustment and stability of connection, and also facilitate maintenance and replacement.

[0011] Optionally, one end of the vertical rod connected with the horizontal rod is provided with a thread, and the vertical rod and the horizontal rod are threadedly connected, so as to facilitate disassembly.

[0012] Optionally, the vertical rod comprises a lower vertical rod and an upper vertical rod, the upper end of the upper vertical rod is detachably connected with the horizontal rod, the lower end of the upper vertical rod is provided with an external thread, the lower end of the lower vertical rod is fixedly connected with the rotating arm, the upper end of the lower vertical rod is internally hollow and provided with an internal thread, the lower end of the upper vertical rod is threadedly connected with the upper end of the lower vertical rod and extends into the interior of the lower vertical rod, and the upper vertical rod and the lower vertical rod are further locked with each other through a locking unit.

[0013] According to the above scheme, the length of the vertical rod can be adjusted according to the actual installation environment, so as to ensure that the feedback mechanism can be correctly installed and operated under different environments, prevent the horizontal rod from being inclined in the vertical direction after installation due to insufficient length of the vertical rod, and ensure that the horizontal rod can accurately feedback the opening and closing state of the valve and is not easily twisted during feedback; and the locking unit is used to ensure the stability between the upper vertical rod and the lower vertical rod.

[0014] Optionally, the locking unit is a cap body located between the upper vertical rod and the lower vertical rod, the cap body is internally hollow and has openings at the upper and lower ends, and the upper vertical rod extends into the interior of the lower vertical rod through the cap body;

[0015] The upper end of the lower vertical rod is provided with an external thread, and the top end of the lower vertical rod is annularly arrayed with at least two pressing blocks, and gaps exist between adjacent pressing blocks,

[0016] The lower end of the cap is internally threaded, and the inner diameter of the lower end is larger than that of the upper end, so that the compression block is pressed against the upper vertical rod during the tightening of the cap on the lower vertical rod, and the locking of the upper vertical rod and the lower vertical rod is achieved by rotating the cap, which is simple to operate.

[0017] Optionally, the outer diameter of the compression block at the lower vertical rod is smaller than that of the remaining lower vertical rods.

[0018] The inner diameter of the upper end of the cap gradually decreases from bottom to top, forming a circular truncated cone shape, and the upper end of the compression block is provided with a chamfered surface, so that the compression block can be more easily pressed, thereby making it fit the upper vertical rod.

[0019] Optionally, the side of the compression block close to the upper vertical rod is provided with an elastic material.

[0020] Through the above technical solutions, the beneficial effects of the present application are:

[0021] 1. In the present application, a connecting hole is formed in the rotating arm for connecting the feedback rod, which can accurately position the feedback rod during installation, thereby reducing installation errors and ensuring the accuracy of the installation position and angle of the feedback rod, so that the feedback mechanism can accurately transmit state information during the opening and closing of the disc valve; at the same time, the feedback rod is divided into a vertical rod and a horizontal rod that can be connected and disconnected, and during valve maintenance, repair or replacement, the vertical rod or the horizontal rod can be individually disassembled without the need to remove the entire feedback mechanism, which can effectively reduce maintenance time and reduce damage or deformation of the feedback rod caused by improper operation or component collision; thereby not only ensuring the installation accuracy and operational convenience of the disc valve opening and closing state feedback mechanism, but also enhancing its durability.

[0022] 2. In the present application, the vertical rod is divided into an upper vertical rod and a lower vertical rod, and a cap is arranged between the upper vertical rod and the lower vertical rod to lock or loosen the upper vertical rod and the lower vertical rod, which not only ensures the stability between the upper vertical rod and the lower vertical rod, but also allows the length of the vertical rod to be adjusted according to the actual installation environment, which can ensure correct installation and operation of the feedback mechanism in different environments, and prevent the length of the vertical rod from being insufficient, causing the horizontal rod to be installed with a vertical deviation after installation, resulting in inaccurate feedback of the opening and closing state of the valve, and twisting during feedback. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is one of the plan views of the feedback mechanism in use in the present application;

[0024] Figure 2 is the second plan view of the feedback mechanism in use in the present application;

[0025] Figure 3 is the front view of the feedback mechanism in use in the present application;

[0026] Figure 4 This application is embodiment 1 Figure 3 Enlarged view of point A in the middle (partial perspective);

[0027] Figure 5 When this application is embodiment 2 Figure 3 Enlarged view of point A in the middle (partial perspective);

[0028] Figure 6 yes Figure 5 Enlarged cross-sectional view at point B;

[0029] Figure 7 This is a schematic structural diagram of the vertical rod in Example 2 of the present application (the upper vertical rod and the lower vertical rod are not locked).

[0030] The numbers in the accompanying drawings are: 1 is a connecting hole, 2 is a limit switch, 3 is a vertical rod, 31 is an upper vertical rod, 32 is a lower vertical rod, 321 is a pressing block, 33 is a cap body, 4 is a cross rod, 5 is a connecting rod, 6 is a fixed arm, 7 is a valve body, 8 is a cylinder, and 9 is a rotating arm. DETAILED DESCRIPTION

[0031] The present application will be further described below with reference to the accompanying drawings and specific embodiments:

[0032] Example 1:

[0033] like Figures 1-4 As shown, a feedback mechanism for the opening and closing state of a disc valve comprises a connecting hole 1, a feedback rod and a limit switch 2 provided on a rotating arm 9, wherein the connecting hole 1 is a threaded hole, and the feedback rod comprises a vertical rod 3 and a horizontal rod 4, both ends of the vertical rod 3 are provided with threads, one end of the vertical rod 3 is threadedly connected to the rotating arm 9 through the connecting hole 1, and the other end is threadedly connected to the horizontal rod 4, and can be locked with a nut at the same time, a connecting rod 5 is provided between the horizontal rod 4 and the limit switch 2, one end of the connecting rod 5 is rotatably connected to the horizontal rod 4 by a bolt and a nut, and the other end is fixedly connected to the transmission shaft of the limit switch 2.

[0034] In this embodiment, by providing a connection hole 1 on the rotating arm 9 for connecting the feedback lever, the feedback lever can be precisely positioned during installation, ensuring the accuracy of the feedback lever installation position and angle. At the same time, the feedback lever is divided into a detachable vertical rod 3 and a horizontal rod 4. When maintaining, repairing, or replacing the valve, the vertical rod 3 or the horizontal rod 4 can be removed and installed separately without removing the entire feedback mechanism. This can effectively reduce maintenance time and avoid damage or deformation of the feedback lever due to improper operation or component collision.

[0035] In addition, the limit switch 2 used is the limit switch 2647ABYS00022AAA-AR2 produced by WESTLOCK of Germany.

[0036] Embodiment Two

[0037] The technical solution in the embodiment is the same as that in Embodiment One, except that:

[0038] As shown in Figure 5 , the vertical rod 3 comprises a lower vertical rod 32 and an upper vertical rod 31, the upper end of the upper vertical rod 31 is detachably connected with the horizontal rod 4, the lower end is provided with external threads, the lower end of the lower vertical rod 32 is fixedly connected with the rotating arm 9, the upper end is internally hollow and provided with internal threads, the lower end of the upper vertical rod 31 is threadedly connected with the upper end of the lower vertical rod 32 and extends into the interior of the lower vertical rod 32; and the upper vertical rod 31 and the lower vertical rod 32 are further locked with each other by a locking unit, so that the length of the vertical rod 3 is adjustable.

[0039] As an implementable manner, as shown in Figures 6-7 , the locking unit is a cap 33 located between the upper vertical rod 31 and the lower vertical rod 32, the cap 33 is internally hollow and open at both upper and lower ends, and the upper vertical rod 31 extends into the interior of the lower vertical rod 32 through the cap 33;

[0040] The upper end of the lower vertical rod 32 is provided with external threads, and the top end is annularly arrayed with four pressing blocks 321, there is a gap between adjacent pressing blocks 321, and the inner side of the pressing block 321 is provided with a rubber pad;

[0041] The lower end of the cap 33 is provided with internal threads, and the inner diameter of the lower end of the cap 33 is larger than that of the upper end, so that the cap 33 is tightened on the lower vertical rod 32, which will squeeze the pressing blocks 321 to make them tightly adhere to the upper vertical rod 31, and the locking of the upper vertical rod 31 and the lower vertical rod 32 can be achieved by rotating the cap 33.

[0042] As an implementable manner, the outer diameter of the lower vertical rod 32 at the pressing block 321 is smaller than that of the remaining lower vertical rod 32;

[0043] The inner diameter of the upper end of the cap 33 gradually decreases from bottom to top, forming a circular truncated cone shape, and the upper end of the pressing block 321 is provided with a beveled surface matching the circular truncated cone shape, so that the cap 33 can more easily squeeze the pressing blocks 321 to make them adhere to the upper vertical rod 31, thereby achieving the locking of the upper vertical rod 31 and the lower vertical rod 32.

[0044] In the embodiment, the disc valve comprises a valve body 7, a fixed arm 6, a cylinder 8 and a rotating arm 9, one end of the fixed arm 6 is fixedly connected with the disc valve 7, the other end is rotationally connected with the cylinder 8, the extending end of the cylinder 8 is rotationally connected with the rotating arm 9, the end of the rotating arm 9 not connected with the cylinder 8 is rotationally connected with the disc valve 7, and the connecting hole 1 is formed on the rotating arm 9;

[0045] When the feedback mechanism is installed, first, the vertical rod 3 is screwed into the connecting hole 1, so that the vertical rod 3 is fixedly connected with the rotating arm 9. According to the space conditions of the practical scene, the limit switch 2 is fixed to a suitable position. The length of the vertical rod 3 is adjusted according to the setting height of the limit switch 2. (That is, first, the cap body 33 is screwed to move the cap body 33 away from the lower vertical rod 32, so that the upper vertical rod 31 and the lower vertical rod 32 are loosened. The length of the vertical rod 3 is adjusted by pulling the upper vertical rod 31. After the length of the vertical rod 3 is adjusted to a suitable position, the cap body 33 is screwed in the opposite direction to move the cap body 33 to the direction close to the lower vertical rod 32. During the movement, the gradually reduced inner diameter of the upper end of the cap body 33 will extrude the compression block 321 on the lower vertical rod 32, so that the compression block 321 tightly contacts the upper vertical rod 31, thereby realizing the fixation between the upper vertical rod 31 and the lower vertical rod 32.) Then, one end of the horizontal rod 4 is threadedly connected with the vertical rod 3 (a nut is additionally provided for locking according to the need), and the other end is rotationally connected with the connecting rod 5. Then, the end of the connecting rod 5, which is not connected with the horizontal rod 4, is fixedly connected with the transmission shaft of the limit switch 2, thereby realizing the installation of the feedback mechanism.

[0046] The preferred embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above-described embodiments. Any equivalent or equivalent transformation or replacement of the technical solutions of the present application within the scope of the disclosure without departing from the spirit of the present application is within the protection scope of the present application.

Claims

1. A disc valve opening and closing state feedback mechanism, characterized in that: The invention comprises a connecting hole (1) provided on a rotating arm (9), a feedback rod and a limit switch (2), wherein the feedback rod comprises a vertical rod (3) and a horizontal rod (4), one end of the vertical rod (3) is fixedly connected to the rotating arm (9) through the connecting hole (1), and the other end is detachably connected to the horizontal rod (4), a connecting rod (5) is provided between the horizontal rod (4) and the limit switch (2), one end of the connecting rod (5) is rotatably connected to the horizontal rod (4), and the other end is fixedly connected to the transmission shaft of the limit switch (2).

2. A disc valve opening and closing state feedback mechanism according to claim 1, characterized in that: The connecting hole (1) is a threaded hole, and one end of the vertical rod (3) fixedly connected to the rotating arm (9) is provided with a thread corresponding to the thread of the connecting hole (1).

3. A disc valve opening and closing state feedback mechanism according to claim 2, characterized in that: One end of the vertical rod (3) connected to the horizontal rod (4) is provided with a thread, and the vertical rod (3) and the horizontal rod (4) are connected by the thread.

4. A disc valve opening and closing state feedback mechanism according to any one of claims 1 to 3, characterized in that: The vertical rod (3) comprises a lower vertical rod (32) and an upper vertical rod (31); the upper end of the upper vertical rod (31) is detachably connected to the cross rod (4), and the lower end is provided with an external thread; the lower end of the lower vertical rod (32) is fixedly connected to the rotating arm (9), and the upper end is hollow and provided with an internal thread; the lower end of the upper vertical rod (31) is threadedly connected to the upper end of the lower vertical rod (32) and extends into the interior of the lower vertical rod (32); and the upper vertical rod (31) and the lower vertical rod (32) are also locked to each other by a locking unit.

5. A disc valve opening and closing state feedback mechanism according to claim 4, characterized in that: The locking unit is a cap body (33) located between the upper vertical rod (31) and the lower vertical rod (32); the cap body (33) is hollow inside and has openings at the upper and lower ends; the upper vertical rod (31) passes through the cap body (33) and extends into the interior of the lower vertical rod (32); The upper end of the lower vertical rod (32) is provided with an external thread, and the top annular array has at least two pressing blocks (322), and there is a gap between adjacent pressing blocks (322). The lower end of the cap body (33) is provided with an internal thread, and the inner diameter of the lower end of the cap body (33) is larger than the inner diameter of the upper end, so that when the cap body (33) is tightened onto the lower vertical rod (32), the pressing block (322) is squeezed to make it close to the upper vertical rod (31).

6. A disc valve opening and closing state feedback mechanism according to claim 5, characterized in that: The outer diameter of the lower vertical rod (32) at the pressing block (322) is smaller than the outer diameters of the other lower vertical rods (32); The inner diameter of the upper end of the cap body (33) gradually decreases from bottom to top, and the upper end of the pressing block (322) is provided with a beveled surface.

7. A disc valve opening and closing state feedback mechanism according to claim 5 or 6, characterized in that: An elastic material is provided on one side of the pressing block (322) close to the upper vertical rod (31).

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