Structure for closing butterfly door of butterfly valve

Abstract

The utility model discloses a structure for closing a butterfly door of a butterfly valve, which comprises the butterfly valve, a valve seat is fixedly connected above the top of the butterfly valve, a valve seat inner groove is arranged inside the valve seat, a screw rod is fixedly connected below the bottom of the valve seat inner groove, and a connecting shaft through groove is arranged below the middle of the inner side of the valve seat inner groove; the screw rod is sleeved with a sealing ring, a screw hole is formed in the sealing ring, the sealing ring is slidably connected to the screw rod through the screw hole, a sealing ring through groove is formed in the middle of the sealing ring, a limiting sealing ring is arranged in the middle of the inner side of the limiting layer, and a limiting ring layer is fixedly connected to the outer surface of the limiting sealing ring. And the limiting ring layer is clamped with the limiting groove. A plurality of screws are fixedly connected to the lower portion of the interior of the valve seat and are matched with the screw holes in the sealing ring for stabilization, even if the sealing ring is abraded, the special conditions such as deviation cannot occur, and the sealing performance of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of disc valve technology, and in particular to a structure for closing the disc valve door. Background Technology

[0002] A butterfly valve, also known as a disc valve, mainly consists of a valve body, a disc, a stem, and a handle. The disc rotates around the valve stem to open and close the valve. Butterfly valves are characterized by their simple structure, small size, light weight, low material consumption, compact installation dimensions, and low driving torque. They are suitable for various media, including water, oil, and gas. Butterfly valves are widely used in water supply and drainage, thermal power generation, heating networks, and sewage treatment. During installation, ensure a secure and leak-free connection, and regularly check the sealing performance and operational flexibility.

[0003] In existing technologies, during the use of ordinary butterfly valves, wear occurs between the valve stem and the sealing ring after repeated use, and gaps appear between the valve stem and the butterfly valve frame. This can lead to misalignment of the sealing ring in the valve seat, potentially allowing liquid to enter the valve seat and causing leakage. After searching, it was found that the technical solution provided by the utility model application with application number "202323074146.4" entitled "A Butterfly Valve Closing Butterfly Door" also suffers from the above-mentioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a structure for sealing the disc door of a disc valve, which solves the problems in the prior art where the sealing ring wears during the use of the valve stem, causing the sealing ring to shift and gaps to lead to water leakage.

[0005] To achieve the above objectives, a structure for sealing the disc door of a disc valve is provided, comprising: a disc valve, a valve seat fixedly connected to the top of the disc valve, an inner groove of the valve seat being formed inside the valve seat, a screw fixedly connected to the bottom of the inner groove of the valve seat, and a connecting shaft through groove formed in the lower middle part of the inner side of the inner groove of the valve seat.

[0006] A limiting layer is fixedly connected to the top of the valve seat. A limiting groove is formed on the upper surface of the inner surface of the limiting layer. A sealing ring is fitted on the screw. A threaded hole is formed on the sealing ring, and the sealing ring is slidably connected to the screw through the threaded hole. A sealing ring through groove is formed in the middle of the sealing ring. A nut is threadedly connected to the top of the screw. A limiting sealing ring is provided in the middle of the inner side of the limiting layer. A limiting ring layer is fixedly connected to the outer surface of the limiting sealing ring, and the limiting ring layer and the limiting groove are engaged. A limiting ring through groove is formed in the middle of the limiting sealing ring.

[0007] According to the structure of the disc valve with closed disc door, the inner surface of the disc valve is provided with an installation groove, and the interior of the installation groove is lined with a waterproof layer.

[0008] According to the structure of the disc valve closing disc door, a valve disc is fixedly connected inside the mounting groove, and a valve stem is fixedly connected to the middle of the valve disc.

[0009] According to the structure of the disc valve with closed disc door, a waterproof ring is laid on the outer surface of the middle part of the valve disc, a lower shaft lug is fixedly connected to the bottom of the valve stem, and an upper shaft lug is fixedly connected to the top of the valve stem.

[0010] According to the structure of the disc valve closing disc door, an upper connecting seat is fixedly connected above the top of the limiting layer, a connecting layer is connected below the bottom of the upper connecting seat, and a connecting nut is fixedly connected to the connecting layer.

[0011] According to the structure of the disc valve closing disc door, a connecting seat is fixedly connected to the top of the upper connecting seat, and a control device is fixedly connected to the top of the connecting seat.

[0012] According to the structure of the disc valve closing disc door, the output end of the control device extends downward through the connecting seat, and the output end of the control device is fixedly connected to the upper shaft lug.

[0013] The above-mentioned solution has the following beneficial effects:

[0014] The device has several screws fixedly connected inside the lower part of the valve seat, which are used to secure the sealing ring with the screw holes. Even if the sealing ring is worn, there will be no misalignment or other special situations, thus improving the sealing performance of the device.

[0015] The device uses a limiting seal ring to limit the position of the seal ring inside the valve seat. During use, the limiting seal ring will press the seal ring tightly to reduce special situations such as positional displacement of the seal ring.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the overall structure of a disc valve for sealing a disc door according to the present invention.

[0019] Figure 2 This is a schematic diagram of the planar structure of a disc valve with a closed disc door, according to the present invention.

[0020] Figure 3This is a schematic diagram of the valve disc structure of a disc valve for closing the disc door according to the present invention;

[0021] Figure 4 This is a schematic diagram of the valve seat structure of a disc valve that closes the disc door according to the present invention.

[0022] Figure 5 This is a cross-sectional view of the internal structure of the valve seat of a disc valve that closes the disc door according to the present invention.

[0023] Figure 6 This is a schematic diagram of the limiting sealing ring structure of a disc valve for closing the disc door according to the present invention.

[0024] Legend:

[0025] 1. Butterfly valve; 101. Mounting groove; 102. Waterproof layer; 103. Valve disc; 104. Valve stem; 105. Waterproof ring; 106. Lower shaft lug; 107. Upper shaft lug; 2. Valve seat; 201. Connecting shaft through groove; 202. Screw; 203. Valve seat inner groove; 204. Limiting layer; 205. Limiting groove; 206. Sealing ring; 207. Screw hole; 208. Sealing ring through groove; 209. Nut; 3. Connecting seat; 301. Control device; 4. Upper connecting seat; 401. Connecting layer; 402. Connecting nut; 5. Limiting sealing ring; 501. Limiting ring layer; 502. Limiting ring through groove. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] Reference Figure 1-6 This utility model embodiment provides a structure for a disc valve to close a disc door, which includes: a disc valve 1, a valve seat 2 fixedly connected to the top of the disc valve 1, the valve seat 2 being fixedly connected to an upper connecting seat 4, a valve seat inner groove 203 being provided inside the valve seat 2, a screw 202 being fixedly connected to the bottom of the valve seat inner groove 203, a connecting shaft through groove 201 being provided in the lower middle of the inner side of the valve seat inner groove 203, and the output end of the control device 301 extending downward through the connecting shaft through groove 201;

[0028] A limiting layer 204 is fixedly connected to the top of the valve seat 2. A limiting groove 205 is formed above the inner surface of the limiting layer 204. A sealing ring 206 is fitted on the screw 202. A screw hole 207 is formed on the sealing ring 206, and the sealing ring 206 is slidably connected to the screw 202 through the screw hole 207. A sealing ring through groove 208 is formed in the middle of the sealing ring 206. A nut 209 is threadedly connected to the top of the screw 202. After the sealing ring 206 fills the inner groove 203 of the valve seat, the nut 209 will fix the sealing ring 206 on the screw 202. A sealing ring 206 is provided to enhance its stability. A limiting sealing ring 5 is provided in the middle of the inner side of the limiting layer 204. The limiting sealing ring 5 can limit the sealing ring 206 and prevent it from shifting. A limiting ring layer 501 is fixedly connected to the outer surface of the limiting sealing ring 5, and the limiting ring layer 501 and the limiting groove 205 are engaged. The limiting ring layer 501 and the limiting groove 205 are the same size. A limiting ring through groove 502 is opened in the middle of the limiting sealing ring 5. The output end of the control device 301 will extend downward through the limiting ring through groove 502.

[0029] The inner surface of the disc valve 1 is provided with an installation groove 101, and a waterproof layer 102 is laid inside the installation groove 101. The waterproof layer 102 is made of inorganic anti-corrosion material, which has good waterproof and corrosion resistance.

[0030] A valve disc 103 is fixedly connected inside the mounting groove 101. A valve stem 104 is fixedly connected to the middle of the valve disc 103. The valve stem 104 drives the valve disc 103 to rotate, which can control the flow rate of water during circulation.

[0031] A waterproof ring 105 is laid on the outer surface of the middle part of the valve disc 103. A lower lug 106 is fixedly connected to the bottom of the valve stem 104, and an upper lug 107 is fixedly connected to the top of the valve stem 104. The upper lug 107 and the lower lug 106 can enhance the stability of the valve disc 103 and reduce the risk of the valve disc 103 falling off.

[0032] The upper connecting seat 4 is fixedly connected to the top of the limiting layer 204, and the connecting layer 401 is connected to the bottom of the upper connecting seat 4. The connecting nut 402 is fixedly connected to the connecting layer 401. The upper connecting seat 4 can connect to the seat 3 and play a supporting role for the connecting seat 3.

[0033] A connecting seat 3 is fixedly connected to the top of the upper connecting seat 4, and a control device 301 is fixedly connected to the top of the connecting seat 3. The output end of the control device 301 is connected to the valve disc 103, and the connecting seat 3 serves to support the control device 301.

[0034] The output end of the control device 301 extends downward through the connecting seat 3. The output end of the control device 301 is fixedly connected to the upper shaft lug 107. The control device 301 drives the valve disc 103 to open and close. The control device 301 is equipped with an information receiving device and a drive motor. The output end of the drive motor is the output end of the control device 301. When the signal receiving device receives control information, it will start the drive motor inside the control device 301, which will drive the valve disc 103 to rotate, thus completing the opening and closing of the valve.

[0035] Working principle: When using this device, the disc valve 1 is first installed in the pipeline. When water flows through the pipeline, the control device 301 drives the valve disc 103 to open and close to control the flow of water. After the valve disc 103 is closed, the waterproof ring 105 on the valve disc 103 cooperates with the waterproof layer 102 in the mounting groove 101 to cut off the water flow to one side, reducing leakage. After the water flow is cut off, if the connection end below the valve seat 2 wears down during long-term use, gaps may appear. When water flows into the gaps, the valve will leak. However, several screws 202 are fixedly connected to the lower part of the valve seat 2, which are fixed with the screw holes 207 on the sealing ring 206. The nuts 209 on the screws 202 fix the sealing ring 206. The limiting sealing ring 5 limits the sealing ring 206, reducing the risk of leakage caused by the sealing ring 206 shifting.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A structure for closing a disc valve door, comprising: A butterfly valve (1) is characterized in that a valve seat (2) is fixedly connected to the top of the butterfly valve (1), a valve seat inner groove (203) is provided inside the valve seat (2), a screw (202) is fixedly connected to the bottom of the valve seat inner groove (203), and a connecting shaft through groove (201) is provided in the lower middle part of the inner side of the valve seat inner groove (203). A limiting layer (204) is fixedly connected to the top of the valve seat (2). A limiting groove (205) is opened above the inner surface of the limiting layer (204). A sealing ring (206) is sleeved on the screw (202). A screw hole (207) is opened on the sealing ring (206), and the sealing ring (206) is slidably connected to the screw (202) through the screw hole (207). A sealing ring through groove (208) is opened in the middle of the sealing ring (206). A nut (209) is threadedly connected to the top of the screw (202). A limiting sealing ring (5) is provided in the middle of the inner side of the limiting layer (204). A limiting ring layer (501) is fixedly connected to the outer surface of the limiting sealing ring (5), and the limiting ring layer (501) and the limiting groove (205) are engaged. A limiting ring through groove (502) is opened in the middle of the limiting sealing ring (5).

2. A structure of a disc valve closing a disc gate according to claim 1, wherein The inner surface of the disc valve (1) is provided with an installation groove (101), and the interior of the installation groove (101) is lined with a waterproof layer (102).

3. A structure of a disc valve closing a disc gate according to claim 2, wherein A valve disc (103) is fixedly connected inside the mounting groove (101), and a valve stem (104) is fixedly connected to the middle of the valve disc (103).

4. A structure of a disc valve closing a disc gate according to claim 3, wherein A waterproof ring (105) is laid on the outer surface of the middle part of the valve disc (103), a lower lug (106) is fixedly connected to the bottom of the valve stem (104), and an upper lug (107) is fixedly connected to the top of the valve stem (104).

5. The structure of a disc valve closing a disc gate according to claim 1, wherein The upper connecting seat (4) is fixedly connected above the top of the limiting layer (204), and the connecting layer (401) is fixedly connected below the bottom of the upper connecting seat (4). A connecting nut (402) is fixedly connected to the connecting layer (401).

6. A structure of a disc valve closing a disc gate according to claim 5, wherein A connecting seat (3) is fixedly connected above the top of the upper connecting seat (4), and a control device (301) is fixedly connected above the top of the connecting seat (3).

7. A structure of a disc valve closing a disc gate according to claim 6, wherein The output end of the control device (301) extends downward through the connecting seat (3), and the output end of the control device (301) is fixedly connected to the upper lug (107).

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