A butterfly valve with indicating function

Abstract

This utility model discloses a butterfly valve with an indicating function, including a valve body. An inlet pipe is bolted to the side wall of the valve body, and a filter assembly for filtering liquid entering the valve body is disposed inside the inlet pipe. A valve plate is rotatably connected inside the valve body, and two symmetrically distributed connecting blocks are fixedly connected to the side wall of the valve plate. One of the connecting blocks has a drive rod inside, and an indicating mechanism for displaying the opening and closing angle of the valve plate is disposed outside the drive rod. This utility model, by incorporating a filter assembly for filtering liquid entering the valve body, removes impurities, reducing direct contact and friction between impurities and valve components, thereby reducing wear, extending the valve's service life, and improving its reliability and stability. The filter assembly is designed with a detachable or easy-to-clean structure, greatly reducing maintenance costs and workload.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically a butterfly valve with an indicating function. Background Technology

[0002] In the field of industrial fluid control, butterfly valves, as a common valve type, are widely used in various pipeline systems to control the flow and shut-off of liquids. However, in conditions such as sewage treatment and chemical slurry transportation, the liquids often contain a large number of impurities, such as particulate matter and fibers. Traditional butterfly valves lack effective filtration devices, allowing these impurities to easily enter the valve body along with the liquid. With increased usage time, impurities gradually accumulate inside the valve body, especially in the gap between the valve plate and the valve body, easily causing blockage. Once blockage occurs, it not only affects the normal opening and closing of the valve, preventing smooth fluid flow, but may also cause wear on components such as the valve plate and valve body, shortening the valve's service life and increasing equipment maintenance costs and downtime.

[0003] The prior art provides a structurally stable butterfly valve (publication number: CN222864151U). The device includes a valve body and an actuator disposed at the top of the valve body. The actuator is equipped with a rotating rod for driving the valve body to rotate. A rotating wheel is fixedly installed at the right end of the rotating rod, and a snap-fit ​​assembly is installed on the outer side of the rotating rod. The bottom of the valve body is fitted with a shell.

[0004] The aforementioned patent has the problem that impurities in the liquid are not filtered during the opening process, and these impurities can easily clog the sealing ring, affecting the normal use of the valve plate. Therefore, we need to propose a butterfly valve with an indicator function. Utility Model Content

[0005] The purpose of this utility model is to provide a butterfly valve with an indicating function, which is equipped with a filter component to filter impurities in the liquid and prevent impurities from clogging the valve plate, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A butterfly valve with an indicating function includes:

[0008] A valve body, on which an inlet pipe is bolted, has a filter assembly inside for filtering the liquid entering the valve body.

[0009] A valve plate is rotatably connected inside the valve body. Two symmetrically distributed connecting blocks are fixedly connected to the side wall of the valve plate. A drive rod is provided inside one of the connecting blocks, and an indicator mechanism for displaying the opening and closing angle of the valve plate is provided on the outside of the drive rod.

[0010] Preferably, the filter assembly includes a fixing ring, a ring groove, a insertion hole, a slider, a filter plate, a handle, and a support frame;

[0011] The inlet pipe is internally fixedly connected to a fixing ring, which has an annular groove and two symmetrically distributed insertion holes that communicate with the annular groove. The inlet pipe is internally equipped with a filter plate, and the filter plate has two symmetrically distributed sliders and two handles fixedly connected to its sidewall. The fixing ring is internally fixedly connected to a support frame.

[0012] Preferably, the indicating mechanism includes a pressure plate, a mounting ring, an indicating plate, and scale lines;

[0013] The drive rod is slidably connected to a pressure plate on its outer side, and the upper end of the valve body is provided with a positioning component for positioning the pressure plate.

[0014] A mounting ring is bolted to the outside of the drive rod, and an indicator plate is fixedly connected to the side wall of the mounting ring. The upper end of the pressure plate is provided with scale lines to display the rotation angle.

[0015] Preferably, the positioning assembly includes a screw and a nut;

[0016] The pressure plate has multiple screws arranged in a ring inside, each screw is fixedly connected to the valve body, and each screw is threaded with a nut on its outer side, with each nut contacting the pressure plate.

[0017] Preferably, another connecting block has a rotating rod inside, which is connected to the valve body via a bushing.

[0018] Preferably, the lower end of the rotating rod contacts a plug, and the plug is connected to the valve body by bolts.

[0019] Preferably, a sealing ring is fixedly connected to the outer side of the valve plate, and the sealing ring is in contact with the valve body.

[0020] Preferably, packing is provided between the pressure plate and the valve body, and the packing is in contact with the drive rod.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This invention features a filter assembly for filtering liquid entering the valve body. The filter assembly removes impurities, reducing direct contact and friction between impurities and valve components, thereby reducing wear, extending the valve's service life, and improving its reliability and stability. The filter assembly is designed with a detachable or easy-to-clean structure, greatly reducing maintenance costs and workload. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is one of the partial structural schematic diagrams of this utility model;

[0025] Figure 3 This is a second partial structural schematic diagram of the present invention;

[0026] Figure 4 This is the third partial structural schematic diagram of the present invention;

[0027] Figure 5 This is a schematic diagram of the cutting component of this utility model.

[0028] In the diagram: 1. Valve body; 2. Inlet pipe; 3. Filter assembly; 31. Fixing ring; 32. Ring groove; 33. Insertion hole; 34. Slider; 35. Filter plate; 36. Handle; 37. Support frame; 4. Outlet pipe; 5. Valve plate; 6. Connecting block; 7. Drive rod; 8. Pressure plate; 9. Mounting ring; 10. Indicator plate; 11. Scale line; 12. Rotating rod; 13. Plug; 14. Sealing ring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-5 The present invention provides a technical solution: a butterfly valve with an indication function, comprising: a valve body 1, an inlet pipe 2 bolted to the side wall of the valve body 1, and a filter assembly 3 for filtering the liquid entering the valve body 1.

[0031] A valve plate 5 is rotatably connected inside the valve body 1. Two symmetrically distributed connecting blocks 6 are fixedly connected to the side wall of the valve plate 5. A drive rod 7 is provided inside one of the connecting blocks 6, and an indicator mechanism for displaying the opening and closing angle of the valve plate 5 is provided on the outside of the drive rod 7.

[0032] Through the cooperation of structures such as valve body 1 and inlet pipe 2, liquid enters the interior of valve body 1 through inlet pipe 2. The filter component 3 inside inlet pipe 2 filters the liquid to prevent valve body 1 from clogging. Drive rod 7 drives valve plate 5 to rotate, controlling the opening and closing of valve plate 5. Indicator mechanism is used to display the angle of valve plate 5. This solves the technical problems of valve body 1 being easy to clog and valve plate 5 opening and closing angle being difficult to observe.

[0033] The valve body 1 is integrally cast from cast steel or stainless steel, with a side flange connecting to the inlet pipe 2 to ensure pressure resistance (PN16-PN40). The filter assembly 3 allows for the removal of impurities without disassembling the valve, making it suitable for wastewater treatment, chemical slurry, and other applications. The other side flange of the valve body 1 is connected to the outlet pipe 4, facilitating the discharge of liquid from the valve body 1. The drive rod 7 is made of 42CrMo tempered steel with a hardness of HRC45-50. It has a spline at the top for docking with the actuator, and the rod is plated with hard chrome for wear resistance and rust prevention.

[0034] The filter assembly 3 includes a fixing ring 31, a ring groove 32, a socket 33, a slider 34, a filter plate 35, a handle 36, and a support frame 37.

[0035] The liquid inlet pipe 2 is fixedly connected to a fixing ring 31. The fixing ring 31 has an annular groove 32 inside and two symmetrically distributed insertion holes 33 inside. Both insertion holes 33 communicate with the annular groove 32. The liquid inlet pipe 2 is equipped with a filter plate 35. Two symmetrically distributed sliders 34 and two handles 36 are fixedly connected to the side wall of the filter plate 35. The fixing ring 31 is fixedly connected to a support frame 37 inside.

[0036] By combining the fixed ring 31 and the ring groove 32, the filter plate 35 filters impurities in the liquid. The insertion hole 33 and the ring groove 32 facilitate the installation of the slider 34. The handle 36 facilitates the control of the rotation of the filter plate 35. The support frame 37 supports the filter plate 35. This solves the technical problems of the valve body 1 being easily blocked if the liquid is not filtered, and the filter plate 35 being inconvenient to disassemble.

[0037] The indicating mechanism includes a pressure plate 8, a mounting ring 9, an indicator plate 10, and a scale line 11; wherein, the pressure plate 8 is slidably connected to the outside of the drive rod 7, and a positioning component for positioning the pressure plate 8 is provided at the upper end of the valve body 1; the mounting ring 9 is bolted to the outside of the drive rod 7, and the indicator plate 10 is fixedly connected to the side wall of the mounting ring 9; the scale line 11 for displaying the rotation angle is provided at the upper end of the pressure plate 8.

[0038] Through the cooperation of structures such as pressure plate 8 and mounting ring 9, the design of pressure plate 8 is to facilitate the marking of scale line 11. Mounting ring 9 is used to install indicator plate 10. Indicator plate 10 rotates with drive rod 7 via mounting ring 9. The rotation angle of indicator plate 10 can be observed through scale line 11, thereby understanding the technical effect of valve plate 5 rotation angle. This solves the technical problem that the rotation angle of valve plate 5 is not easy to observe.

[0039] The positioning assembly includes screws and nuts; wherein, multiple screws are slidably connected inside the pressure plate 8 in a ring, the multiple screws are fixedly connected to the valve body 1 respectively, and nuts are threadedly connected to the outside of the multiple screws respectively, and the multiple nuts are in contact with the pressure plate 8 respectively.

[0040] By using the screw and nut structure, the screw is fixed at the upper end of the valve body 1, the pressure plate 8 slides to the outside of the screw, the screw and valve body 1 limit the pressure plate 8, and at the same time, the nut is used in conjunction with the screw to limit the pressure plate 8 again, thus solving the technical problem that the pressure plate 8 is inconvenient to install.

[0041] Another connecting block 6 has a rotating rod 12 inside, which is connected to the valve body 1 through a bushing.

[0042] By cooperating with the connecting block 6 and the rotating rod 12, the connecting block 6 fixes one end of the rotating rod 12, and the rotating rod 12 limits the lower end of the valve plate 5 through the connecting block 6, thus solving the technical problem of the lower end of the valve plate 5 lacking a limit.

[0043] The lower end of the rotating rod 12 contacts a plug 13, which is bolted to the valve body 1. Through the cooperation of the rotating rod 12 and the plug 13, the plug 13 effectively limits the lower end of the rotating rod 12, preventing it from falling off, thus solving the technical problem of the lack of a limiting mechanism at the lower end of the rotating rod 12.

[0044] A sealing ring 14 is fixedly connected to the outer side of the valve plate 5, and the sealing ring 14 contacts the valve body 1. Through the cooperation of the valve plate 5 and the sealing ring 14, the sealing ring 14 achieves the technical effect of sealing the contact position between the valve plate 5 and the valve body 1, thus solving the technical problem of poor sealing effect at the contact point between the valve plate 5 and the valve body 1.

[0045] Packing is provided between the pressure plate 8 and the valve body 1, and the packing is in contact with the drive rod 7.

[0046] By cooperating with the structure of the packing and the drive rod 7, the packing is filled in the annular gap between the drive rod 7 and the valve body 1, preventing liquid or gas inside the valve from leaking outward along the axial direction of the drive rod 7 (especially important for high pressure or corrosive media). Even when the drive rod 7 rotates (such as adjusting the opening of the valve plate 5), the packing can still maintain tight contact, ensuring sealing during the movement. The packing usually contains self-lubricating components such as graphite or PTFE, which can reduce the frictional resistance when the drive rod 7 rotates, extend the service life of the contact part between the rod and the valve body 1, absorb the small vibrations of the drive rod 7 caused by fluid impact or actuator action, and avoid direct metal-to-metal collision. This technical effect solves the technical problem of poor sealing effect at the connection between the drive rod 7 and the valve body 1.

[0047] During installation, slide the filter plate 35 into the inlet pipe 2 using the handle 36, and rotate the filter plate 35 so that the slider 34 slides into the annular groove 32 through the insertion hole 33. Rotate the filter plate 35 90 degrees, and install the filter plate 35 through friction and the limiting effect of the annular groove 32. Then, install the inlet pipe 2 and the outlet pipe 4 on the side wall of the valve body 1 through the flange. Inject the liquid into the inlet pipe 2. The filter plate 35 filters impurities in the liquid, and the liquid passing through the filter plate 35 exerts a force in the direction of water flow on the filter plate 35, which can prevent the filter plate 35 from falling off. When the filter plate 35 is clogged, it can be removed and cleaned by the above operation.

[0048] A driver is provided at the upper end of the drive rod 7. The driver controls the drive rod 7 to rotate. The drive rod 7 drives the valve plate 5 to rotate through the connecting block 6. The valve plate 5 opens, and the liquid passes through the valve body 1 and is discharged through the liquid outlet pipe 4.

[0049] When the drive rod 7 rotates, it drives the mounting ring 9 to rotate. The mounting ring 9 causes the indicator plate 10 to rotate. By observing the angle of rotation of the indicator plate 10 on the scale line 11, the angle of the valve plate 5 can be determined.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve with an indicating function, characterized in that, include: Valve body (1), with an inlet pipe (2) bolted to the side wall of the valve body (1), and a filter assembly (3) for filtering the liquid entering the valve body (1) is provided inside the inlet pipe (2). The valve body (1) is rotatably connected to a valve plate (5). Two symmetrically distributed connecting blocks (6) are fixedly connected to the side wall of the valve plate (5). One of the connecting blocks (6) is equipped with a drive rod (7). The outer side of the drive rod (7) is equipped with an indicator mechanism for displaying the opening and closing angle of the valve plate (5).

2. A butterfly valve with an indicating function according to claim 1, characterized in that, The filter assembly (3) includes a fixing ring (31), a ring groove (32), a socket (33), a slider (34), a filter plate (35), a handle (36), and a support frame (37). The liquid inlet pipe (2) is fixedly connected to a fixing ring (31), the fixing ring (31) has an annular groove (32) inside, and two symmetrically distributed insertion holes (33) are opened inside the fixing ring (31). Both insertion holes (33) are connected to the annular groove (32). The liquid inlet pipe (2) is provided with a filter plate (35). Two symmetrically distributed sliders (34) and two handles (36) are fixedly connected to the side wall of the filter plate (35). The fixing ring (31) is fixedly connected to a support frame (37).

3. A butterfly valve with an indicating function according to claim 1, characterized in that, The indicating mechanism includes a pressure plate (8), a mounting ring (9), an indicating plate (10), and scale lines (11). Among them, the outer side of the drive rod (7) is slidably connected to the pressure plate (8), and the upper end of the valve body (1) is provided with a positioning component for positioning the pressure plate (8); An installation ring (9) is bolted to the outside of the drive rod (7), and an indicator plate (10) is fixedly connected to the side wall of the installation ring (9). The upper end of the pressure plate (8) is provided with a scale line (11) to display the rotation angle.

4. A butterfly valve with an indicating function according to claim 3, characterized in that, The positioning assembly includes a screw and a nut; The pressure plate (8) has multiple screws arranged in a ring inside, which are fixedly connected to the valve body (1) respectively. Nuts are threaded onto the outer side of each screw, and the nuts are in contact with the pressure plate (8) respectively.

5. A butterfly valve with an indicating function according to claim 1, characterized in that, Another connecting block (6) has a rotating rod (12) inside, which is connected to the valve body (1) via a bushing.

6. A butterfly valve with an indicating function according to claim 5, characterized in that, The lower end of the rotating rod (12) is in contact with a plug (13), and the plug (13) is connected to the valve body (1) by bolts.

7. A butterfly valve with an indicating function according to claim 1, characterized in that, A sealing ring (14) is fixedly connected to the outside of the valve plate (5), and the sealing ring (14) is in contact with the valve body (1).

8. A butterfly valve with an indicating function according to claim 4, characterized in that, A packing material is provided between the pressure plate (8) and the valve body (1), and the packing material is in contact with the drive rod (7).

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