Butterfly valve convenient to maintain

Abstract

The utility model relates to a butterfly valve convenient to maintain, which belongs to the technical field of valves and comprises a valve seat, a butterfly plate and a valve rod, the butterfly plate is positioned on the inner side of the valve seat, and the valve rod is connected with the butterfly plate after penetrating through the valve seat. A fixing disc is installed on the outer side of the valve rod and located in the valve seat. A sealing gasket is mounted on the outer side of the fixed disc; the butterfly plate comprises a first limiting plate and a second limiting plate, and a sealing gasket is clamped between the first limiting plate and the second limiting plate. According to the butterfly valve, the sealing gasket is clamped between the first limiting plate and the second limiting plate through the fixing device, the first limiting plate and the second limiting plate are fixedly connected with the valve rod, the butterfly valve is simple in structure and convenient to maintain subsequently, the sealing gasket is installed in the groove through the fixing device in the installation and use process of the butterfly valve body, sealing performance is achieved, and the service life of the butterfly valve is prolonged. And the protection performance of the butterfly valve body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, specifically point to a kind of butterfly valve that maintenance is convenient. BACKGROUND

[0002] Butterfly valve is also called flap valve, it is a kind of simple structure regulating valve, mainly plays the role of cut-off and throttling on pipeline, butterfly valve actuator is a disc-shaped butterfly plate, rotates in its own axis in valve body, to achieve the purpose of opening and closing or adjusting. In the opening and closing process of butterfly valve, butterfly plate rotation will rub with valve seat, after using for a period of time, butterfly plate will appear wear, so that the sealing property of butterfly plate and valve seat is affected when valve is closed, therefore, butterfly plate needs to be replaced regularly,

[0003] The prior art patent document CN210423748U provides a butterfly valve convenient to maintain, the utility model discloses a clamping seat, clamping seat and slide rod, effectively facilitate the staff to the upper bearing and lower bearing in the upper valve body and lower valve body lubrication or replacement, avoid the inconvenience of the whole casting valve body replacement needs to be removed from the pipeline, effectively improve the efficiency of staff maintenance, meet the needs of use.

[0004] But the existing butterfly valve convenient for subsequent maintenance has the problems that the existing butterfly valve uses the restoring force of spring to position the valve body connecting part, but in the long-term use and repeated compression of spring, the restoring effect of spring elastic potential energy is poor, which directly affects the stability of butterfly valve connection and the normal use of butterfly valve. UTILITY MODEL CONTENTS

[0005] The utility model solves the above technical problems, and provides a butterfly valve convenient to maintain.

[0006] To solve the above technical problems, the utility model provides the technical scheme that:

[0007] A butterfly valve convenient to maintain, comprising a valve seat, a butterfly plate and a valve rod, the butterfly plate is located on the inner side of the valve seat, the valve rod is connected with the butterfly plate after penetrating through the valve seat;

[0008] A fixing disc is installed on the outer side of the valve rod and in the valve seat.

[0009] A sealing gasket is installed on the outer side of the fixing disc.

[0010] The butterfly plate comprises a first limiting plate and a second limiting plate, and the first limiting plate and the second limiting plate clamp the sealing gasket.

[0011] Preferably, a groove for installing the sealing gasket is formed in the inner side of the outer ring of the fixing disc.

[0012] Preferably, a positioning column is installed on one side of the second limiting plate close to the first limiting plate, and a limiting slot is formed on one side of the first limiting plate close to the second limiting plate.

[0013] Preferably, a positioning hole is formed on the sealing gasket for cooperating with the positioning column.

[0014] Preferably, a fixing device is installed between the second limiting plate and the first limiting plate, the fixing device comprises a first arc-shaped fixing plate and a second arc-shaped fixing plate arranged on one side of the second limiting plate away from the first limiting plate, a threaded rod is installed on one side of the second arc-shaped fixing plate, a through hole is formed on the valve rod and the first arc-shaped fixing plate for cooperating with the threaded rod, and a fixing nut is installed on the outer side of the threaded rod.

[0015] Preferably, a limiting block is installed on the outer side of the valve rod, a limiting slot is formed on the limiting block, and a connecting block is installed on the first arc-shaped fixing plate and the second arc-shaped fixing plate for cooperating with the limiting slot.

[0016] Preferably, a reinforcing rib is installed between the fixing disc and the valve rod.

[0017] After the above structure is adopted, the butterfly valve has the following advantages.

[0018] The first limiting plate and the second limiting plate are clamped with the sealing gasket by the fixing device, and are fixedly connected with the valve rod, so that the butterfly valve is simple in structure and convenient for subsequent maintenance.

[0019] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the above-described exemplary aspects, embodiments and features, further aspects, embodiments and features of the present application will be apparent from the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0021] Figure 1 is a structural schematic diagram of the present application;

[0022] Figure 2 is a structural schematic diagram of the valve seat after the butterfly plate is taken out;

[0023] Figure 3 It is the structural schematic diagram of the butterfly plate of the utility model;

[0024] Figure 4 It is the explosion view of the butterfly plate of the utility model.

[0025] As shown in the figure: 1, valve seat;2, fixed disc;3, valve stem;4, butterfly plate;401, first limit plate;402, second limit plate;403, positioning column;404, limit groove;5, sealing gasket;6, groove;7, positioning hole;8, fixing device;801, first arc-shaped fixed plate;802, second arc-shaped fixed plate;803, threaded rod;804, through hole;805, fixed nut;9, limit block;10, limit groove;11, connecting block;12, reinforcing rib. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0027] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium;It can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The utility model will be further described in detail below in combination with the whole text.

[0029] In combination with the drawings Figures 1-3 A butterfly valve convenient to maintain, including valve seat 1, butterfly plate 4 and valve stem 3, butterfly plate 4 is located in the inside of valve seat 1, valve stem 3 is connected with butterfly plate 4 after passing through valve seat 1, fixed disc 2 is installed on the outside of valve stem 3 and in valve seat 1, sealing gasket 5 is installed on the outside of fixed disc 2, specifically, butterfly plate 4 is rotated by valve stem 3, so as to achieve the effect of water flow on-off, sealing gasket 5 is auxiliary sealing.

[0030] In the specific implementation of the utility model, for example, Figures 2-4As shown, the butterfly plate 4 comprises a first limiting plate 401 and a second limiting plate 402, the first limiting plate 401 and the second limiting plate 402 clamp the sealing gasket 5, the outer circle inner side of the fixing disc 2 is provided with a recess 6 for installing the sealing gasket 5, the second limiting plate 402 is provided with a positioning column 403 on the side close to the first limiting plate 401, the first limiting plate 401 is provided with a limiting groove 404 on the side close to the second limiting plate 402, the sealing gasket 5 is provided with a positioning hole 7 matched with the positioning column 403, the sealing gasket 5 is installed in the recess 6, clamped by the first limiting plate 401 and the second limiting plate 402, and limited by the positioning column 403 inserted into the limiting groove 404 through the positioning hole 7, the positioning column 403 is provided in at least three groups, can support the sealing gasket 5, and prevents the sealing gasket 5 from retracting.

[0031] The utility model discloses in the specific implementation, such as Figure 3 And Figure 4 As shown, the second limiting plate 402 and the first limiting plate 401 are connected through the fixing device 8, the fixing device 8 comprises a first arc-shaped fixing plate 801 and a second arc-shaped fixing plate 802 arranged on the side of the second limiting plate 402 away from the first limiting plate 401, a threaded rod 803 is arranged on one side of the second arc-shaped fixing plate 802, a through hole 804 matched with the threaded rod 803 is arranged on the valve rod 3 and the first arc-shaped fixing plate 801, a fixing nut 805 is arranged on the outer side of the threaded rod 803, when installing, the staff installs the sealing gasket 5 in the recess 6, the second limiting plate 402 and the first limiting plate 401 clamp the sealing gasket 5, the threaded rod 803 of the second arc-shaped fixing plate 802 passes through the through hole 804, the first arc-shaped fixing plate 801 is installed, and the fixing nut 805 is rotated and fixed on the outer side of the threaded rod 803, so that the fixing device 8 clamps the sealing gasket 5 between the second limiting plate 402 and the first limiting plate 401, and the fixing effect is completed.

[0032] The outer side of the valve rod 3 is relatively provided with a limiting block 9, the limiting block 9 is provided with a limiting groove 10, the first arc-shaped fixing plate 801 and the second arc-shaped fixing plate 802 are provided with a connecting block 11 matched with the limiting groove 10, specifically, when installing, the connecting block 11 is installed in the limiting groove 10, and the butterfly plate 4 can be assisted and limited when the valve rod 3 rotates.

[0033] The fixing disc 2 and the valve rod 3 are provided with a reinforcing rib 12, the strength between the fixing disc 2 and the valve rod 3 is reinforced, and the surface of the valve seat 1 is provided with a bolt waist hole for connecting a pipeline.

[0034] The working principle of the utility model:

[0035] The sealing gasket 5 is installed in the groove 6, clamped by the first limiting plate 401 and the second limiting plate 402, and limited by the positioning column 403 inserted into the limiting groove 404 through the positioning hole 7, the second limiting plate 402 and the first limiting plate 401 clamp the sealing gasket 5, the threaded rod 803 of the second arc-shaped fixing plate 802 passes through the through hole 804, the first arc-shaped fixing plate 801 is installed, and the fixing nut 805 is rotated and fixed outside the threaded rod 803, so that the fixing device 8 clamps the sealing gasket 5 by the second limiting plate 402 and the first limiting plate 401, and the fixing effect is completed, and when disassembling and maintaining, only the fixing nut 805 is rotated and disassembled, so that the disassembly is completed, and convenience is provided for subsequent replacement of accessories.

[0036] The utility model and its implementation mode are described above, and the description is not restrictive, and the shown in the full text is only one of the implementation modes of the utility model, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structure modes and embodiments are not creatively designed, which should belong to the protection scope of the utility model.

Claims

1. A butterfly valve that is easy to maintain, comprising a valve seat (1), a butterfly plate (4), and a valve stem (3), characterized in that, The butterfly plate (4) is located inside the valve seat (1), and the valve stem (3) passes through the valve seat (1) and is connected to the butterfly plate (4); A fixing plate (2) is installed on the outside of the valve stem (3) and inside the valve seat (1); A sealing gasket (5) is installed on the outside of the fixed plate (2); The butterfly plate (4) includes a first limiting plate (401) and a second limiting plate (402), and a sealing gasket (5) is sandwiched between the first limiting plate (401) and the second limiting plate (402).

2. The butterfly valve with convenient maintenance according to claim 1, characterized in that: The inner side of the outer ring of the fixed plate (2) is provided with a groove (6) for installing the sealing gasket (5).

3. The butterfly valve with convenient maintenance according to claim 1, characterized in that: The second limiting plate (402) is equipped with a positioning post (403) on the side near the first limiting plate (401), and the first limiting plate (401) is provided with a limiting groove (404) on the side near the second limiting plate (402).

4. The butterfly valve with convenient maintenance according to claim 3, characterized in that: The sealing gasket (5) has a positioning hole (7) for use with the positioning post (403).

5. The butterfly valve with convenient maintenance according to claim 3, characterized in that: A fixing device (8) is installed between the second limiting plate (402) and the first limiting plate (401). The fixing device (8) includes a first arc-shaped fixing plate (801) and a second arc-shaped fixing plate (802) disposed on the side of the second limiting plate (402) away from the first limiting plate (401). A threaded rod (803) is installed on one side of the second arc-shaped fixing plate (802). A through hole (804) for cooperating with the threaded rod (803) is opened on the valve stem (3) and the first arc-shaped fixing plate (801). A fixing nut (805) is installed on the outside of the threaded rod (803).

6. The butterfly valve with convenient maintenance according to claim 5, characterized in that: A limiting block (9) is installed on the outer side of the valve stem (3), and a limiting groove (10) is opened on the limiting block (9). A connecting block (11) for use with the limiting groove (10) is installed on the first arc-shaped fixing plate (801) and the second arc-shaped fixing plate (802).

7. The butterfly valve with convenient maintenance according to claim 1, characterized in that: A reinforcing rib (12) is installed between the fixed plate (2) and the valve stem (3).

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