Replaceable butterfly valve seat structure

Abstract

The utility model relates to the technical field of butterfly valve seat structures, in particular to a replaceable butterfly valve seat structure which comprises a valve body and a flange, the front end and the rear end of the outer wall of the valve body are fixedly connected with the inner wall of the flange respectively, the top of the valve body is communicated with a vertical cylinder, and the inner wall of the valve body is connected with a valve seat structure. The outer wall of the valve seat structure is connected with the outer wall of the valve body, the bottoms of the front side and the rear side of the valve seat structure are connected with the fixing structures correspondingly, then the bolt continues to be rotated, the bolt penetrates through the lantern ring in a threaded mode to be connected with a round opening in an annular groove in the outer wall of the butterfly valve seat in a threaded mode, and fixing of the butterfly valve seat and the valve body is completed. The lantern ring achieves the sealing effect between the valve body and the butterfly valve seat through the rubber material of the lantern ring, the bolt is screwed towards the outer side to be separated from the butterfly valve seat, then the butterfly valve seat is pushed out of the inner wall of the valve body to complete disassembly, the butterfly valve seat can be replaced, normal disassembly of the butterfly valve seat structure is guaranteed, and normal replacement of the butterfly valve seat structure is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valve seat structures, in particular to a replaceable butterfly valve seat structure. Background Art

[0002] The butterfly valve seat structure is a removable surface component inside the valve, which is used to support the valve core in the fully closed position and form a sealing pair.

[0003] For example, a replaceable butterfly valve seat structure with the authorization announcement number "CN220910505U" realizes the assembly of the valve seat and the valve body by setting a detachable retaining ring. When the valve seat is damaged, you only need to remove the retaining ring, replace the valve seat and then reinstall the retaining ring to make the old butterfly valve achieve the same sealing effect as the new butterfly valve. This solves the problem that the entire valve must be replaced if the valve seat is damaged, realizes the recycling of the valve body, and reduces the waste of manpower, material resources and other resources. However, in the use of the butterfly valve seat structure, the valve seat is fixed with an internal thread, and the inside of the butterfly valve needs to pass through a water source. This causes the connection of the butterfly valve seat to be frequently washed by the water source, which can easily cause the bolts at the connection of the butterfly valve seat structure to rust, resulting in the inability to normally disassemble the butterfly valve seat structure, affecting the normal replacement of the butterfly valve seat structure. Utility Model Content

[0004] The utility model aims to solve the problem that the valve seat structure of a butterfly valve cannot be normally disassembled, which affects the normal replacement of the valve seat structure of the butterfly valve, and proposes a replaceable valve seat structure of a butterfly valve.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A replaceable butterfly valve seat structure is designed, including a valve body and a flange, the front and rear ends of the outer wall of the valve body are respectively fixedly connected to the inner wall of the flange, the top of the valve body is connected to a vertical cylinder, the inner wall of the valve body is connected to the valve seat structure, the outer wall of the valve seat structure is connected to the outer wall of the valve body, and the front and rear bottoms of the valve seat structure are respectively connected to fixed structures.

[0007] Preferably, the valve seat structure comprises a butterfly valve seat and an annular groove, the outer wall of the butterfly valve seat is plugged into the inner wall of the valve body, the outer wall of the butterfly valve seat is processed with an annular groove, and the inner wall of the annular groove is plugged with a collar.

[0008] Preferably, bolts are threadedly connected to the left and right sides of the collar respectively.

[0009] Preferably, the inner sides of the outer walls of the two bolts are respectively threadedly connected to the circular openings of the inner wall of the annular groove.

[0010] Preferably, outer walls of the two bolts are respectively threadedly connected to the left and right sides of the valve body.

[0011] Preferably, the fixing structure includes a screw and a vertical plate, the inner sides of the outer walls of the two screws are respectively threadedly connected to the front and rear sides below the butterfly valve seat, the outer wall ends of the screws are rotatably connected to the upper outer wall of the vertical plate, and the ends of the screws are fixed with handles.

[0012] The utility model proposes a replaceable butterfly valve seat structure, which has the beneficial effects of: a bolt in the valve seat structure is threaded through the valve body from the outside to the inside, and then the bolt is continuously rotated so that the bolt thread passes through the collar and is threadedly connected with the circular mouth inside the annular groove on the outer wall of the butterfly valve seat, thereby completing the fixation of the butterfly valve seat and the valve body; the collar seals between the valve body and the butterfly valve seat through its own rubber material, and the bolt is twisted outward to separate the bolt from the butterfly valve seat, and then the butterfly valve seat is pushed out of the inner wall of the valve body to complete the disassembly, thereby realizing the replaceability of the butterfly valve seat, ensuring the normal disassembly of the butterfly valve seat structure, and ensuring the normal replacement of the butterfly valve seat structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the connection relationship between the valve body, flange and inner ring;

[0015] Figure 3 for Figure 1 The structural diagram of A in the figure;

[0016] Figure 4 for Figure 1 Schematic diagram of the connection structure between the butterfly valve seat, annular groove and bolts.

[0017] In the figure: 1. valve body, 2. valve seat structure, 201. butterfly valve seat, 202. annular groove, 203. sleeve ring, 204. bolt, 3. fixing structure, 301. screw, 302. vertical plate, 303. handle, 4. flange, 5. vertical cylinder, 6. inner ring. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] Embodiment 1:

[0020] See also Figure 1-4In the present embodiment, a replaceable butterfly valve seat structure includes a valve body 1 and a flange 4. The front and rear ends of the outer wall of the valve body 1 are respectively fixedly connected to the inner wall of the flange 4. The valve body 1 is a butterfly valve body model selected according to usage requirements. The top of the valve body 1 is connected to a vertical cylinder 5. The inner wall of the vertical cylinder 5 can cooperate with the bearing to connect the valve stem. The inner wall of the valve body 1 is connected to the valve seat structure 2. The outer wall of the valve seat structure 2 is connected to the outer wall of the valve body 1. The front and rear bottoms of the valve seat structure 2 are respectively connected to fixed structures 3.

[0021] The valve seat structure 2 includes a butterfly valve seat 201 and an annular groove 202. The outer wall of the butterfly valve seat 201 is plugged into the inner wall of the valve body 1. The outer wall of the butterfly valve seat 201 is processed with an annular groove 202. The inner wall of the annular groove 202 is plugged with a collar 203. The collar 203 is made of rubber. The left and right sides of the collar 203 are respectively threadedly connected with bolts 204. The inner sides of the outer walls of the two bolts 204 are respectively threadedly connected with the inner round mouth of the annular groove 202. The bolts 204 fix the collar 203, the butterfly valve seat 201 and the valve body 1. The outer walls of the two bolts 204 are respectively threadedly connected with the left and right sides of the valve body 1.

[0022] The bolt 204 in the valve seat structure 2 is threaded through the valve body 1 from the outside to the inside, and then the bolt 204 is continued to be rotated so that the bolt 204 is threaded through the ring 203 and connected with the round mouth thread inside the annular groove 202 on the outer wall of the butterfly valve seat 201, thereby completing the fixation of the butterfly valve seat 201 and the valve body 1. The ring 203 seals between the valve body 1 and the butterfly valve seat 201 through its own rubber material. The bolt 204 is twisted outward to disengage the bolt 204 from the butterfly valve seat 201, and then the butterfly valve seat 201 is pushed out of the inner wall of the valve body 1 to complete the disassembly, thereby realizing the replaceability of the butterfly valve seat 201, ensuring the normal disassembly of the butterfly valve seat structure, and ensuring the normal replacement of the butterfly valve seat structure.

[0023] The fixing structure 3 includes a screw rod 301 and a vertical plate 302. The inner sides of the outer walls of the two screw rods 301 are respectively threadedly connected to the lower front and rear sides of the butterfly valve seat 201. The outer wall ends of the screw rods 301 are rotatably connected to the upper outer wall of the vertical plate 302. The outer wall ends of the screw rods 301 are subjected to force to rotate through the bearings above the outer wall of the vertical plate 302. The ends of the screw rods 301 are fixedly connected to handles 303, which facilitate driving the screw rods 301 to rotate.

[0024] Working principle:

[0025] Butterfly valve seat installation:

[0026] The outer wall of the butterfly valve seat 201 is inserted into the inner wall of the valve body 1, and then the inner upper sides of the two vertical plates 302 are respectively fitted with the outer bottom of the butterfly valve seat 201, and then the screw rod 301 is screwed into the outer wall round opening of the butterfly valve seat 201 with the handle 303, until the inner side of the vertical plate 302 is tightly against the butterfly valve seat 201 and the outer wall of the valve body 1, so that the butterfly valve seat 201 can be prevented from moving on the inner wall of the valve body 1 during installation, and then the bolt 204 is threaded through the valve body 1 from the outside to the inside, and then it is rotated continuously. The bolt 204 is screwed through the collar 203 and connected with the round thread inside the annular groove 202 on the outer wall of the butterfly valve seat 201, so as to fix the butterfly valve seat 201 and the valve body 1. The collar 203 seals the valve body 1 and the butterfly valve seat 201 through its rubber material. The bolt 204 is screwed outward to separate the bolt 204 from the butterfly valve seat 201, and then the butterfly valve seat 201 is pushed out of the inner wall of the valve body 1 to complete the disassembly, so as to realize the replaceable butterfly valve seat 201.

[0027] Disassembly of butterfly valve seat fixing structure:

[0028] The handle 303 is used to rotate the screw rod 301 outward to separate the screw rod 301 from the round opening of the outer wall of the butterfly valve seat 201, so that the screw rod 301 and the vertical plate 302 are separated from the outer wall of the butterfly valve seat 201 to complete the disassembly and cleaning.

[0029] Embodiment 2:

[0030] See also Figure 1-4 : In this embodiment, a replaceable butterfly valve seat structure also includes an inner ring 6, and the outer wall of the inner ring 6 is fixedly connected to the inner wall of the butterfly valve seat 201.

[0031] Working principle:

[0032] The inner ring 6 can prevent direct wear between the valve plate and the inner wall of the butterfly valve seat 201 , and the inner ring 6 is a metal sealing ring made of aluminum, which can ensure the seal between the valve plate and the inner ring 6 .

[0033] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A replaceable butterfly valve seat structure, comprising a valve body (1) and a flange (4), characterized in that: The front and rear ends of the outer wall of the valve body (1) are respectively fixedly connected to the inner wall of the flange (4); the top of the valve body (1) is connected to a vertical cylinder (5); the inner wall of the valve body (1) is connected to a valve seat structure (2); the outer wall of the valve seat structure (2) is connected to the outer wall of the valve body (1); and the bottoms of the front and rear sides of the valve seat structure (2) are respectively connected to fixed structures (3).

2. A replaceable butterfly valve seat structure according to claim 1, characterized in that: The valve seat structure (2) comprises a butterfly valve seat (201) and an annular groove (202); the outer wall of the butterfly valve seat (201) is plugged into the inner wall of the valve body (1); the outer wall of the butterfly valve seat (201) is processed with an annular groove (202); and the inner wall of the annular groove (202) is plugged with a sleeve (203).

3. A replaceable butterfly valve seat structure according to claim 2, characterized in that: Bolts (204) are respectively threadedly connected on the left and right sides of the collar (203).

4. A replaceable butterfly valve seat structure according to claim 3, characterized in that: The inner sides of the outer walls of the two bolts (204) are respectively threadedly connected to the inner wall circular openings of the annular groove (202).

5. The replaceable butterfly valve seat structure according to claim 3, characterized in that: The outer walls of the two bolts (204) are respectively threadedly connected to the left and right sides of the valve body (1).

6. The replaceable butterfly valve seat structure according to claim 1, characterized in that: The fixing structure (3) comprises a screw rod (301) and a vertical plate (302), the inner sides of the outer walls of the two screw rods (301) are respectively threadedly connected to the lower sides of the front and rear sides of the butterfly valve seat (201), the outer wall ends of the screw rods (301) are rotatably connected to the upper part of the outer wall of the vertical plate (302), and the ends of the screw rods (301) are fixedly connected to the handles (303).

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