Sediment-proof butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a sediment-proof butterfly valve which comprises a valve seat, a rotary table and connecting flanges, the connecting flanges used for being connected with an external pipeline are welded and fixed to the two ends of the valve seat, the rotary table is installed at the upper end of the valve seat, and a positioning mechanism, a valve plate and a fixing ring plate are installed in the valve seat. The positioning mechanism comprises a positioning bent plate, square blocks are welded and fixed to the upper end and the lower end of the positioning bent plate, and a first limiting groove and a second limiting groove are formed in the positioning bent plate; the valve plate comprises a butterfly plate body, a valve rod is fixedly connected to the middle of the butterfly plate body, a sealing ring is fixedly connected to the edge of the butterfly plate body, the two sides of the butterfly plate body are connected with scraping plates through buffering mechanisms, each buffering mechanism comprises a connecting block, and the connecting blocks are connected with the butterfly plate body through bolts. The problem that silt in fluid erodes the sealing ring and the scraper blade is solved, and the sealing effect of the valve plate in the later period can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, and specifically relates to a sediment-proof butterfly valve. Background Art

[0002] A butterfly valve is a common fluid control device, mainly used to regulate or cut off the fluid flow in a pipeline. It consists of a butterfly plate (valve flap) that can rotate around an axis and a valve body. The working principle of the butterfly valve is to control the flow rate and flow direction of the fluid by adjusting the opening angle of the butterfly plate;

[0003] The types of butterfly valves include manual butterfly valves, pneumatic butterfly valves, electric butterfly valves, etc. Different types of butterfly valves can be selected according to different driving methods and application scenarios. When selecting a butterfly valve, factors such as the nature of the medium, working pressure, working temperature, and flow requirements need to be considered;

[0004] During the process of using a butterfly valve to intercept a fluid with sediment, when the butterfly valve is opened, the sediment in the fluid will cause erosion to the valve plate, resulting in poor sealing of the valve in the later stage. Therefore, a sediment-proof butterfly valve is proposed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sediment-proof butterfly valve to solve the problem that when the butterfly valve is used to intercept a fluid with sediment and the butterfly valve is opened, the sediment in the fluid will cause erosion to the valve plate, resulting in poor sealing of the valve in the later stage.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A sediment-proof butterfly valve includes a valve seat, a turntable, and a connecting flange. Connecting flanges for connecting with external pipelines are welded and fixed at both ends of the valve seat. A turntable is installed at the upper end of the valve seat. A positioning mechanism, a valve plate, and a fixed ring plate are installed inside the valve seat; the positioning mechanism includes a positioning bent plate, squares are welded and fixed at the upper and lower ends of the positioning bent plate, and a first limiting groove and a second limiting groove are opened inside the positioning bent plate; the valve plate includes a butterfly plate, a valve rod is fixedly connected to the middle of the butterfly plate, a sealing ring is fixedly connected to the edge of the butterfly plate, and scraping plates are connected to both sides of the butterfly plate through a buffer mechanism. The buffer mechanism includes a connecting block, the connecting block is connected to the butterfly plate by bolts, a fixed seat is welded and fixed between the connecting blocks, and a moving plate is slidably connected inside the fixed seat through a telescopic spring and a sealing sleeve.

[0008] As a further optimized content of the present utility model, among them: the fixed ring plate is fixedly welded and connected inside the valve seat, the inner wall of the fixed ring plate is in close contact with the butterfly plate through a sealing ring, and the fixed ring plate is adapted to the sealing ring and the butterfly plate.

[0009] As a further optimized content of the present utility model, wherein: there are two positioning mechanisms, the positioning mechanisms are arranged on both sides of the valve plate, the positioning bent plate is fixedly connected to the inner wall of the valve seat through a square block, and the first limiting groove communicates with the second limiting groove.

[0010] As a further optimized content of the present utility model, wherein: the valve stem is rotatably connected to the valve seat through a sealing mechanism, and the upper end of the valve stem is exposed outside the valve seat and fixedly connected to the central position of the turntable, and the central points of the valve stem and the butterfly plate are arranged on the same vertical line.

[0011] As a further optimized content of the present utility model, wherein: there are two scraping plates, the scraping plates are staggered on both sides of the butterfly plate, the scraping plates are semi-circularly arranged, and the edges of the scraping plates and the inner edges of the fixed ring plates are both arc-shaped.

[0012] As a further optimized content of the present utility model, wherein: there are three buffer mechanisms arranged on any one of the scraping plates, and the buffer mechanisms are respectively arranged at the upper and lower ends and the middle position of the scraping plate.

[0013] As a further optimized content of the present utility model, wherein: one end of the telescopic spring is fixedly connected to the inner wall of the fixed seat, the other end of the telescopic spring is fixedly connected to the moving plate, and the sealing sleeve is fixedly connected to the outside of the moving plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] In the present utility model, through the arranged positioning mechanism and the valve plate, when the fluid with sediment inside the butterfly valve passes through the butterfly valve, the sediment in the fluid can be prevented from eroding the sealing ring and the scraping plate, the sealing effect of the valve plate in the later stage can be ensured, and at the same time, the rotation direction of the butterfly plate can be limited and further limited, and the sediment and impurities attached to the inner wall of the fixed ring plate can be removed. Furthermore, it can effectively prevent the sediment from being sandwiched between the contact surfaces of the sealing ring and the fixed ring plate, and can further protect the sealing performance of the sealing ring and the overall butterfly valve. Moreover, during the cleaning process of the scraping plate, the scraping plate is buffered by the buffer mechanism, and the problem of jamming with the fixed ring plate can be effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the internal structure of the valve seat of the present utility model;

[0018] Figure 3 is the present utility model Figure 2 schematic diagram of the structure at A in;

[0019] Figure 4 Structural schematic diagram of the positioning mechanism of the present utility model;

[0020] Figure 5 Structural schematic diagram of the valve plate of the present utility model;

[0021] Figure 6 For the present utility model Figure 5 Structural schematic diagram at position A in the present utility model;

[0022] Figure 7 Structural schematic diagram of the buffer mechanism of the present utility model.

[0023] In the figure: 1, valve seat; 2, turntable; 3, connecting flange;

[0024] 4, positioning mechanism; 41, positioning bent plate; 42, square block; 43, first limit groove; 44, second limit groove;

[0025] 5, valve plate; 51, butterfly plate; 52, valve stem; 53, sealing ring; 54, scraper; 55, buffer mechanism; 551, connecting block; 552, bolt; 553, fixed seat; 554, telescopic spring; 555, moving plate; 556, sealing sleeve;

[0026] 6, fixed ring plate. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0028] It should be noted that the terms used here are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Please refer to Figures 1-7 , the present utility model provides a technical solution:

[0030] A sediment-proof butterfly valve, comprising a valve seat 1, a turntable 2 and a connecting flange 3. Connecting flanges 3 for connecting with external pipelines are fixedly welded at both ends of the valve seat 1. A turntable 2 is installed at the upper end of the valve seat 1. A positioning mechanism 4, a valve plate 5 and a fixed ring plate 6 are installed inside the valve seat 1; The positioning mechanism 4 includes a positioning bent plate 41. Squares 42 are fixedly welded at the upper and lower ends of the positioning bent plate 41. A first limiting groove 43 and a second limiting groove 44 are formed inside the positioning bent plate 41; The valve plate 5 includes a butterfly plate 51. A valve stem 52 is fixedly connected in the middle of the butterfly plate 51. A sealing ring 53 is fixedly connected to the edge of the butterfly plate 51. Scrapers 54 are connected to both sides of the butterfly plate 51 through a buffer mechanism 55. The buffer mechanism 55 includes a connecting block 551. The connecting block 551 is connected to the butterfly plate 51 through a bolt 552. A fixed seat 553 is fixedly welded between the connecting blocks 551. A moving plate 555 is slidably connected inside the fixed seat 553 through a telescopic spring 554 and a sealing sleeve 556.

[0031] As a further implementation of this solution, the fixed ring plate 6 is fixedly welded and connected inside the valve seat 1. The inner wall of the fixed ring plate 6 is in close contact with the butterfly plate 51 through the sealing ring 53, and the fixed ring plate 6 is adapted to the sealing ring 53 and the butterfly plate 51. Through the above settings, the sealing performance at the edge of the butterfly plate 51 can be improved;

[0032] As a further implementation of this solution, there are two positioning mechanisms 4. The positioning mechanisms 4 are arranged on both sides of the valve plate 5. The positioning bent plate 41 is fixedly connected to the inner wall of the valve seat 1 through the square 42. The first limiting groove 43 communicates with the second limiting groove 44. Through the above settings, when the water source with sediment inside the butterfly valve passes through the butterfly valve, the sediment in the water can be prevented from eroding the sealing ring 53 and the scraper 54, and at the same time, the rotation direction of the butterfly plate 51 can be limited;

[0033] As a further implementation of this solution, the valve stem 52 is rotatably connected to the valve seat 1 through a sealing mechanism, and the upper end of the valve stem 52 is exposed outside the valve seat 1 and fixedly connected to the center position of the turntable 2. The center points of the valve stem 52 and the butterfly plate 51 are arranged on the same vertical line. Through the above settings, the stability of the overall operation of the device can be further improved;

[0034] As a further implementation of this solution, there are two scrapers 54. The scrapers 54 are arranged alternately on both sides of the butterfly plate 51. The scraper 54 is semi-circularly arranged. The edges of the scraper 54 and the inner edge of the fixed ring plate 6 are both arc-shaped. Through the above settings, the jamming between the scraper 54 and the fixed ring plate 6 can be prevented;

[0035] As a further implementation of this solution, there are three buffer mechanisms 55 arranged on any one of the scrapers 54. The buffer mechanisms 55 are respectively arranged at the upper, lower and middle positions of the scraper 54. Through the above settings, the stability of the scraper 54 during movement can be ensured;

[0036] As a further implementation of this solution, one end of the telescopic spring 554 is fixedly connected to the inner wall of the fixed seat 553, the other end of the telescopic spring 554 is fixedly connected to the moving plate 555, and the sealing sleeve 556 is fixedly connected to the outside of the moving plate 555. Through the above settings, the moving plate 555 can be stably limited during actual use;

[0037] Working process: During the use of the butterfly valve, the staff rotates the turntable 2 to control the rotation of the valve stem 52, thereby driving the rotation of the butterfly plate 51. During the opening process of the butterfly valve, the scraping plate 54 and the sealing ring 53 are respectively located in the first limiting groove 43 and the second limiting groove 44 formed inside the positioning bent plate 41. This setting can prevent the problem that the sediment in the water erodes the sealing ring 53 and the scraping plate 54 when the water source with sediment passes through the butterfly valve, and at the same time can limit the rotation direction of the butterfly plate 51;

[0038] During the closing process of the butterfly valve, the scraping plate 54 first contacts the inner wall of the fixed ring plate 6. During the contact process, the sediment and impurities attached to the inner wall of the fixed ring plate 6 can be removed, thereby effectively preventing the sediment from being sandwiched between the contact surface of the sealing ring 53 and the fixed ring plate 6, and further protecting the sealing performance of the sealing ring 53 and the butterfly valve as a whole. Moreover, during the cleaning process of the scraping plate 54, the scraping plate 54 is buffered by the buffer mechanism 55, which can effectively avoid the problem of jamming with the fixed ring plate 6.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sediment-proof butterfly valve, comprising a valve seat (1), a rotating disc (2) and a connecting flange (3), characterized in that: Both ends of the valve seat (1) are fixedly welded with connecting flanges (3) for connecting to external pipelines. A turntable (2) is installed at the upper end of the valve seat (1), and a positioning mechanism (4), a valve plate (5), and a fixed ring plate (6) are installed inside the valve seat (1). The positioning mechanism (4) includes a positioning bent plate (41). Blocks (42) are fixedly welded to both the upper and lower ends of the positioning bent plate (41). A first limiting groove (43) and a second limiting groove (44) are formed inside the positioning bent plate (41). The valve plate (5) includes a butterfly plate (51). A valve stem (52) is fixedly connected to the middle of the butterfly plate (51). A sealing ring (53) is fixedly connected to the edge of the butterfly plate (51). Scrapers (54) are connected to both sides of the butterfly plate (51) through a buffer mechanism (55). The buffer mechanism (55) includes a connecting block (551). The connecting block (551) is connected to the butterfly plate (51) by bolts (552). A fixed seat (553) is fixedly welded between the connecting blocks (551). A moving plate (555) is slidably connected inside the fixed seat (553) through a telescopic spring (554) and a sealing sleeve (556).

2. The anti-sediment butterfly valve according to claim 1, wherein: The fixed ring plate (6) is fixedly welded inside the valve seat (1). The inner wall of the fixed ring plate (6) is in close contact with the butterfly plate (51) through the sealing ring (53), and the fixed ring plate (6) is adapted to the sealing ring (53) and the butterfly plate (51).

3. The anti-sediment butterfly valve according to claim 1, characterized in that: There are two positioning mechanisms (4). The positioning mechanisms (4) are arranged on both sides of the valve plate (5). The positioning bent plate (41) is fixedly connected to the inner wall of the valve seat (1) through the block (42). The first limiting groove (43) communicates with the second limiting groove (44).

4. The anti-sediment butterfly valve according to claim 1, characterized in that: The valve stem (52) is rotatably connected to the valve seat (1) through a sealing mechanism, and the upper end of the valve stem (52) is exposed outside the valve seat (1) and fixedly connected to the center position of the turntable (2). The central points of the valve stem (52) and the butterfly plate (51) are on the same vertical line.

5. The anti-sediment butterfly valve according to claim 1, characterized in that: There are two scrapers (54). The scrapers (54) are arranged alternately on both sides of the butterfly plate (51). The scrapers (54) are semi-circular in shape. The edges of the scrapers (54) and the inner edge of the fixed ring plate (6) are both arc-shaped.

6. The anti-sediment butterfly valve according to claim 1, characterized in that: There are three buffer mechanisms (55) arranged on any one of the scrapers (54). The buffer mechanisms (55) are respectively arranged at the upper, lower, and middle positions of the scraper (54).

7. The anti-sediment butterfly valve according to claim 1, characterized in that: One end of the telescopic spring (554) is fixedly connected to the inner wall of the fixed seat (553), and the other end of the telescopic spring (554) is fixedly connected to the moving plate (555). The sealing sleeve (556) is fixedly connected to the outside of the moving plate (555).

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