A butterfly valve with replaceable internal closure

Abstract

The utility model discloses a butterfly valve of replaceable internal closing piece, its technical scheme main points are, including butterfly valve body center seat, butterfly valve body center seat bottom integral setting has the valve ring, and the disc plate closing piece is rotationally arranged in the valve ring, and the disc plate closing piece side integral setting has two insert rings, the top plate is installed to butterfly valve body center seat upper end surface, and the top plate upper end surface installs the limit seat, and the first plug rod is inserted to the top plate, and the first plug rod is set up and passes through butterfly valve body center seat and extends to the insert ring in top department. The valve ring of the application is better, and the sealing buffer of disc plate sealing ring is passed through simultaneously, avoids the damage of disc plate closing piece to valve ring and self during rotation, and disc plate sealing ring can be replaced alone after disc plate sealing ring consumption, and the disc plate closing piece can be independently maintained in use through the dismounting replacement of disc plate closing piece, ensures that the long -term operation stability of the butterfly valve of the application.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to a butterfly valve with replaceable internal closing elements. Background Technology

[0002] A butterfly valve is a type of valve commonly used in piping systems to regulate and control the flow of fluids such as water and gas. Its working principle is based on a circular disc (or butterfly plate), which controls the flow of fluid by rotating.

[0003] The sealing of a butterfly valve typically relies on the contact between the disc and the seat. With prolonged use, especially in fluids containing particulate matter or corrosive substances, the contact surfaces between the disc and seat will wear down, leading to a decrease in sealing performance. This can cause fluid leakage or inaccurate flow control. Simultaneously, the closing element (primarily the disc) continuously rubs against the seat during opening and closing. Over time, this friction causes the edges of the disc to gradually wear down, increasing the risk of fluid leakage.

[0004] Therefore, a butterfly valve with replaceable internal closing parts is proposed to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a butterfly valve with replaceable internal closing parts.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A butterfly valve with replaceable internal closure, including a butterfly valve body center seat;

[0008] A valve ring is integrally provided at the bottom of the center seat of the butterfly valve body, and a disc closure component is rotatably provided inside the valve ring. Two insert rings are integrally provided on the side of the disc closure component, and the two insert rings are arranged vertically up and down.

[0009] A top plate is installed on the upper end face of the center seat of the butterfly valve body. A limiting seat is installed on the upper end face of the top plate. A first insert rod is inserted into the top plate. The first insert rod is vertically arranged and passes through the center seat of the butterfly valve body and extends into the insert ring located at the top. The bottom end of the first insert rod is fully engaged with the insert ring, and the top of the first insert rod abuts against the top of the limiting seat.

[0010] The valve ring has a sealing groove on its side, and a disc sealing ring is embedded in the sealing groove. A cover is also embedded on the side of the valve ring. The diameter of the disc sealing ring is larger than the diameter of the disc closure and surrounds the disc closure. The outer wall of the disc closure fits against the inner wall of the disc sealing ring.

[0011] A second insert is inserted at the bottom of the valve ring, the second insert passing through the valve ring and extending into one of the inserts at the bottom.

[0012] Furthermore, the cover has several positioning bolts threaded on its side.

[0013] Furthermore, the valve ring has several threaded holes on its side, and several positioning bolts correspond to the threaded holes and are threadedly connected to the valve ring.

[0014] Furthermore, the upper end face of the limiting seat is threaded with several bolts, and the top plate has threaded holes corresponding to the bolts. The bolts pass through the limiting seat and extend to be threadedly connected to the top plate.

[0015] Furthermore, a valve seat is installed on the top of the limiting seat.

[0016] In summary, this utility model has the following beneficial effects:

[0017] Because a disc seal ring is installed on the side of the valve ring, and the disc seal ring is fixed to the valve ring by the cover and the disc seal ring, and because the outer end of the disc closure part abuts against the disc seal ring, and the diameter of the disc closure part is smaller than the inner diameter of the valve ring and the disc seal ring, the valve ring and the disc closure part are actually sealed by the disc seal ring and the cover. Compared with the traditional structure where the seal ring directly seals the valve ring, the valve ring of this application has a better sealing effect. At the same time, the sealing buffer of the disc seal ring avoids damage to the valve ring and itself during the rotation of the disc closure part. After the disc seal ring is worn out, it can be replaced separately.

[0018] After the limit seat is removed, the user can pull out the first insert rod and disengage it from the insertion ring. Once the first insert rod is disengaged from the limit of the disc closure, the user can then remove the cover and positioning bolts and pull out the second insert rod from the insertion ring. At this point, the disc closure can be fully movable, allowing the user to replace it. By disassembling and replacing the disc closure, it can be independently maintained during use, ensuring the long-term stable operation of the butterfly valve of this application. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure in this embodiment;

[0020] Figure 2 This is a schematic diagram of the installation structure of the disc closure component within the valve ring in this embodiment;

[0021] Figure 3 This is a schematic diagram of the disassembly and assembly separation structure of the disc sealing ring and the cover on the side of the valve ring in this embodiment;

[0022] Figure 4 This is a schematic diagram of the connection structure between the disc closure and the valve ring in this embodiment.

[0023] In the diagram, 1 is the center seat of the butterfly valve body; 11 is the top plate; 2 is the valve ring; 3 is the disc closure part; 31 is the insert ring; 4 is the cover; 41 is the positioning bolt; 42 is the disc sealing ring; 5 is the limit seat; 51 is the bolt; 6 is the valve seat; 7 is the first insert rod; and 8 is the second insert rod. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0026] First embodiment;

[0027] Reference Figure 1 As shown, this is a butterfly valve with replaceable internal closure element in a preferred embodiment of the present invention, including a butterfly valve body center seat 1.

[0028] A valve ring 2 is integrally provided at the bottom of the center seat 1 of the butterfly valve body. A disc closing member 3 is rotatably provided inside the valve ring 2. Two insert rings 31 are integrally provided on the side of the disc closing member 3. The two insert rings 31 are arranged vertically up and down.

[0029] A top plate 11 is installed on the upper end face of the butterfly valve body center seat 1, and a limit seat 5 is installed on the upper end face of the top plate 11. A first insert rod 7 is inserted into the top plate 11. The first insert rod 7 is vertically arranged and passes through the butterfly valve body center seat 1 and extends into the insert ring 31 located at the top. The bottom end of the first insert rod 7 is fully engaged with the insert ring 31, and the top of the first insert rod 7 abuts against the top of the limit seat 51.

[0030] A sealing groove is provided on the side of the valve ring 2, and a disc sealing ring 42 is embedded in the sealing groove. A cover 4 is also embedded on the side of the valve ring 2. The diameter of the disc sealing ring 42 is larger than the diameter of the disc closing member 3 and surrounds the disc closing member 3. The outer wall of the disc closing member 3 is in contact with the inner wall of the disc sealing ring 42.

[0031] A second insert rod 8 is inserted at the bottom of the valve ring 2. The second insert rod 8 passes through the valve ring 2 and extends into one of the insert rings 31 located at the bottom.

[0032] In this embodiment, since a disc sealing ring 42 is installed on the side of the valve ring 2, and the disc sealing ring 42 is fixed to the valve ring 2 by the cover 4, and since the outer end of the disc closing member 3 abuts against the disc sealing ring 42, and the diameter of the disc closing member 3 is smaller than the inner diameter of the valve ring 2 and the disc sealing ring 42, the valve ring 2 and the disc closing member 3 are actually sealed by the disc sealing ring 42 and the cover 4. Compared with the traditional structure where the sealing ring directly seals the valve ring 2, the valve ring 2 of this application has a better sealing effect. At the same time, the sealing buffer of the disc sealing ring 42 avoids damage to the valve ring 2 and itself during the rotation of the disc closing member 3. After the disc sealing ring 42 is worn out, it can be replaced separately.

[0033] Second embodiment;

[0034] Reference Figure 1-3 As shown, the cover 4 has several positioning bolts 41 threadedly connected to its side. The positioning bolts 41 are arranged in a circle around the center of the cover 4.

[0035] Third embodiment;

[0036] Reference Figure 1-3 As shown, the valve ring 2 has several threaded holes on its side, and several positioning bolts 41 correspond to the threaded holes and are threadedly connected to the valve ring 2. The positioning bolts 41 can be used to limit the position of the cover 4, so that the cover 4 can be installed on the valve ring 2. During assembly, the user places the disc sealing ring 42 in the mounting groove inside the valve ring 2, and then places the cover 4 on one side of the valve ring 2 and makes it fit against the disc sealing ring 42. After the cover 4 is fitted, the positioning bolts 41 are tightened onto the valve ring 2 in sequence.

[0037] Fourth embodiment;

[0038] Reference Figure 1-3 As shown, the upper end face of the limiting seat 5 is threaded with several bolts 51. The top plate 11 has threaded holes corresponding to the bolts 51. The bolts 51 pass through the limiting seat 5 and extend to be threadedly connected to the top plate 11. The bolts 51 are used to install the limiting seat 5 on the top plate 11. In use, when the limiting seat 5 is removed, the user can pull out the first insert rod 7 and disengage it from the insertion ring 31. After the first insert rod 7 disengages from the limiting of the disc closure 3, the user can then remove the cover 4 and the positioning bolt 41, and pull out the second insert rod 8 from the insertion ring 31. At this time, the disc closure 3 can be fully movable, allowing the user to replace the disc closure 3. By disassembling and replacing the disc closure 3, the disc closure 3 can be independently maintained during use, ensuring the long-term stable operation of the butterfly valve of this application.

[0039] Fifth embodiment;

[0040] Reference Figure 1-3 As shown, a valve seat 6 is installed on the top of the limiting seat 5. In a preferred embodiment, the top of the limiting seat 5 is provided with a hole, and a turbine transmission structure is provided inside the valve seat 6. The turbine transmission structure passes through the hole on the valve seat 6 and the limiting seat 5 and extends to connect with the top of the first insert rod 7. A handwheel is also provided on the side of the valve seat 6. The handwheel can be used to drive the turbine transmission structure to rotate, thereby using the first insert rod 7 to drive the disc closing member 3 to rotate and realize the closing and opening of the valve ring 2 by the disc closing member 3.

[0041] It should be noted that the connection between the turbine drive structure set in the valve seat 6 and the first insert rod 7 is an existing mature structure. The rotation method of the control handwheel and the turbine drive structure can be achieved by those skilled in the art through simple setting and understanding. It is common knowledge in the field. It is only used and not modified. Therefore, the connection method and control method will not be described in detail.

[0042] Specific implementation process:

[0043] Step 1: In actual valve closure, a disc closure member 3 is rotatably installed inside the valve ring 2 of this application. Simultaneously, the disc closure member 3 is rotatably positioned between the first insert 7 and the second insert 8. Since a disc sealing ring 42 is installed on the side of the valve ring 2, and the disc sealing ring 42 is limited by the cover 4, the disc sealing ring 42 is fixed to the valve ring 2 through the cover 4. The outer end of the disc closure member 3 abuts against the disc sealing ring 42, and the diameter of the disc closure member 3 is smaller than the inner diameter of the valve ring 2 and the disc sealing ring 42. Therefore, the valve ring 2 and the disc closure member 3 are actually sealed through the disc sealing ring 42 and the cover 4. Compared to the traditional structure where the sealing ring directly seals the valve ring 2, the valve ring 2 of this application has a better sealing effect. Furthermore, the sealing buffer provided by the disc sealing ring 42 prevents damage to the valve ring 2 and itself during rotation of the disc closure member 3. When the disc sealing ring 42 is worn out, it can be replaced separately.

[0044] Step 2: Since the diameter of the disc closure 3 is smaller than the inner diameter of the valve ring 2, and the diameter of the sealing groove where the disc sealing ring 42 is installed on the valve ring 2 is larger than the diameter of the disc closure 3, the disc closure 3 can contact the disc sealing ring 42 when it is opened or closed, thereby reducing its rotational resistance, making it easier to operate, reducing frictional wear between components, and extending the service life of the disc closure 3.

[0045] Step 3: Since the disc plate closure 3 is inserted between the first insert 7 and the second insert 8, when the user needs to disassemble and replace the disc plate closure 3, by unscrewing the bolt 51, the limiting seat 5 will be removed from the top of the top plate 11. After the limiting seat 5 is removed, the user can pull out the first insert 7 and disengage it from the insertion ring 31. After the first insert 7 is disengaged from the limiting position of the disc plate closure 3, the user can then remove the cover 4 and the positioning bolt 41, and pull out the second insert 8 from the insertion ring 31. At this point, the disc plate closure 3 can be fully movable, allowing the user to replace the disc plate closure 3.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve with replaceable internal closure element, characterized in that: Including the center seat of the butterfly valve body (1); The bottom of the valve body center seat (1) of the butterfly valve is integrally provided with a valve ring (2), and a disc closure member (3) is rotatably provided inside the valve ring (2). Two insert rings (31) are integrally provided on the side of the disc closure member (3), and the two insert rings (31) are arranged vertically up and down. A top plate (11) is installed on the upper end face of the butterfly valve body center seat (1). A limiting seat (5) is installed on the upper end face of the top plate (11). A first insert rod (7) is inserted into the top plate (11). The first insert rod (7) is vertically arranged and passes through the butterfly valve body center seat (1) and extends into the insert ring (31) located at the top. The bottom end of the first insert rod (7) is fully fitted with the insert ring (31), and the top of the first insert rod (7) abuts against the top of the limiting seat (5). The valve ring (2) has a sealing groove on its side, and a disc sealing ring (42) is embedded in the sealing groove. The valve ring (2) also has a cover (4) embedded on its side. The diameter of the disc sealing ring (42) is larger than the diameter of the disc closure (3) and surrounds the disc closure (3). The outer wall of the disc closure (3) is in contact with the inner wall of the disc sealing ring (42). The valve ring (2) has a second insert (8) inserted at the bottom, the second insert (8) passing through the valve ring (2) and extending into one of the inserts (31) at the bottom.

2. The butterfly valve with replaceable internal closure element according to claim 1, characterized in that: The cover (4) has several positioning bolts (41) threaded on its side.

3. The butterfly valve with replaceable internal closure element according to claim 2, characterized in that: The valve ring (2) has several threaded holes on its side, and several positioning bolts (41) are threaded to the valve ring (2) corresponding to the threaded holes.

4. The butterfly valve with replaceable internal closure element according to claim 1, characterized in that: The upper end face of the limiting seat (5) is threaded with several bolts (51), and the top plate (11) has screw holes corresponding to the bolts (51). The bolts (51) pass through the limiting seat (5) and extend to be threadedly connected to the top plate (11).

5. The butterfly valve with replaceable internal closure element according to claim 1, characterized in that: A valve seat (6) is installed on the top of the limiting seat (5).

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