Anti-leakage butterfly valve device with multi-stage sealing structure

Abstract

The utility model discloses an anti-leakage butterfly valve device with a multi-stage sealing structure, which relates to the technical field of butterfly valves and comprises a valve body, a valve rod is arranged at the top of the valve body, a valve rod is arranged in the valve rod, a valve plate positioned in the valve body is arranged at the lower end of the valve rod, a handle is fixed at the upper end of the valve rod, and the valve rod is connected with the handle. A fixing plate is fixedly connected to the upper portion of the side wall of the valve column in a sleeved mode, a clamping mechanism is arranged at the lower end of the handle, a plurality of clamping grooves matched with the clamping mechanism are formed in the lower end of the fixing plate in an arrayed mode, a containing groove is formed in the circumferential wall of the valve plate, and a reinforced sealing mechanism is arranged in the containing groove. The hollow sealing ring is tightly attached to the inner wall of the valve body, the valve plate and the valve body can be further sealed, the sealing effect is improved, the handle can be effectively prevented from loosening, then the valve plate is prevented from loosening, and the sealing performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, and in particular to a leak-proof butterfly valve device with a multi-stage sealing structure. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve that can be used for on / off control of low-pressure pipeline media. A butterfly valve is a type of valve in which the closing element (valve disc or butterfly plate) is a disc that rotates around the valve shaft to achieve opening and closing.

[0003] Patent CN213575593U, entitled "Multi-stage Sealing Butterfly Valve," discloses a multi-stage sealing butterfly valve, including a valve body. A mounting base is fixedly installed on the top of the valve body, and an adjusting rod is rotatably connected inside the mounting base. The bottom of the adjusting rod extends into the interior of the valve body and is fixedly mounted with a sealing plate. Semi-circular sealing rings are fixedly installed on both sides of the valve body, centered on the adjusting rod. The two semi-circular sealing rings are located on the back of the left side and the front of the right side of the sealing plate. This patent has a relatively simple sealing structure, therefore, the sealing effect on the valve plate is insufficient, and the lack of a function to fix the adjusting rod further reduces the sealing performance. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a leak-proof butterfly valve device with a multi-stage sealing structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A leak-proof butterfly valve device with a multi-stage sealing structure includes a valve body, a valve column at the top of the valve body, a valve stem inside the valve column, a valve plate located inside the valve body at the lower end of the valve stem, a handle fixed at the upper end of the valve stem, a fixing plate fixedly sleeved on the upper side wall of the valve column, a snap-fit ​​mechanism at the lower end of the handle, a plurality of snap-fit ​​grooves arranged at the lower end of the fixing plate to cooperate with the snap-fit ​​mechanism, a receiving groove on the peripheral wall of the valve plate, and a reinforced sealing mechanism inside the receiving groove.

[0007] As a further improvement of this utility model, the locking mechanism includes two fixing blocks fixedly connected to the lower end of the handle, a gripping rod is provided between the two fixing blocks, a pin shaft is provided through the gripping rod and rotatably connected to the gripping rod, the two ends of the pin shaft respectively pass through the two fixing blocks, and the pin shaft is fixedly connected to the fixing blocks, a locking block that cooperates with the locking groove is fixedly provided at the upper end of the gripping rod, and an elastic piece is fixedly connected to the lower end of the handle, the end of the elastic piece away from the handle is fixedly connected to the gripping rod.

[0008] As a further improvement of this utility model, the enhanced sealing mechanism includes a hollow sealing ring disposed inside the receiving groove. The handle and valve stem are both provided with receiving channels. A connecting pipe is disposed inside the receiving channel. The lower end of the handle is provided with an installation groove communicating with the receiving channel. An elastic airbag connected to the connecting pipe is fixed on the inner top wall of the installation groove. The end of the connecting pipe away from the elastic airbag is connected to the hollow sealing ring.

[0009] As a further improvement of this utility model, the card block and the grip rod are integrally formed.

[0010] As a further improvement of this utility model, the elastic sheet has a V-shaped structure and is made of steel.

[0011] As a further improvement of this utility model, two sealing strips are provided on the inner wall of the valve body, and the two sealing strips are respectively located on both sides of the valve plate.

[0012] The beneficial effects of this utility model are:

[0013] By setting up a reinforced sealing mechanism, the elastic airbag is squeezed by the gripping rod, and the gas in the elastic airbag can enter the hollow sealing ring through the connecting tube. This causes the hollow sealing ring to expand, and by making the hollow sealing ring fit tightly against the inner wall of the valve body, the valve plate and valve body can be further sealed, thus improving the sealing effect.

[0014] By setting up a snap-fit ​​mechanism, the grip rod can be fixed by snapping the clip into the slot, thereby fixing the handle and preventing the handle from loosening, which in turn prevents the valve plate from loosening and improves the sealing performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a leak-proof butterfly valve device with a multi-stage sealing structure proposed in this utility model.

[0016] Figure 2 This is a schematic diagram of the gripping rod and locking block of a leak-proof butterfly valve device with a multi-stage sealing structure proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the handle, mounting groove, and accommodating channel of a leak-proof butterfly valve device with a multi-stage sealing structure proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the connecting pipe, elastic air bladder, and hollow sealing ring of a leak-proof butterfly valve device with a multi-stage sealing structure proposed in this utility model.

[0019] In the diagram: 1 Valve body, 2 Valve column, 3 Fixing plate, 4 Valve stem, 5 Handle, 6 Slot, 7 Holding rod, 8 Fixing block, 9 Pin, 10 Elastic sheet, 11 Valve plate, 12 Sealing strip, 13 Locking block, 14 Mounting groove, 15 Accommodation channel, 16 Elastic airbag, 17 Connecting pipe, 18 Hollow sealing ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-4 A leak-proof butterfly valve device with a multi-stage sealing structure includes a valve body 1, a valve column 2 at the top of the valve body 1, a valve stem 4 inside the valve column 2, a valve plate 11 located inside the valve body 1 at the lower end of the valve stem 4, two sealing strips 12 on the inner wall of the valve body 1, the two sealing strips 12 being located on both sides of the valve plate 11 respectively, and the valve plate 11 and the sealing strips 12 being in contact and fit together to achieve a seal between the valve plate 11 and the sealing strips 12, a handle 5 fixed at the upper end of the valve stem 4, a fixing plate 3 fixedly sleeved on the upper side wall of the valve column 2, a snap-fit ​​mechanism at the lower end of the handle 5, and multiple slots 6 arranged at the lower end of the fixing plate 3 to cooperate with the snap-fit ​​mechanism, and a receiving groove on the peripheral wall of the valve plate 11, with a reinforcing sealing mechanism inside the receiving groove.

[0022] In this utility model, the locking mechanism includes two fixing blocks 8 fixedly connected to the lower end of the handle 5, a gripping rod 7 is provided between the two fixing blocks 8, a pin 9 is provided through the gripping rod 7 and rotatably connected to the gripping rod 7, the two ends of the pin 9 respectively pass through the two fixing blocks 8, and the pin 9 is fixedly connected to the fixing blocks 8, a locking block 13 that cooperates with the locking groove 6 is fixedly fixed to the upper end of the gripping rod 7, an elastic piece 10 is fixedly connected to the lower end of the handle 5, the end of the elastic piece 10 away from the handle 5 is fixedly connected to the gripping rod 7, the elastic piece 10 has a V-shaped structure, the material of the elastic piece 10 is steel, and the locking block 13 is integrally formed with the gripping rod 7.

[0023] The enhanced sealing mechanism includes a hollow sealing ring 18 disposed inside the receiving groove. The handle 5 and valve stem 4 both have receiving channels 15 inside, and a connecting pipe 17 is disposed inside the receiving channel 15. The lower end of the handle 5 has a mounting groove 14 communicating with the receiving channel 15. An elastic airbag 16 connected to the connecting pipe 17 is fixed on the inner top wall of the mounting groove 14. The end of the connecting pipe 17 away from the elastic airbag 16 is connected to the hollow sealing ring 18. By squeezing the elastic airbag 16 with the gripping rod 7, and utilizing the connecting effect of the connecting pipe 17, gas in the elastic airbag 16 can enter the hollow sealing ring 18, causing the hollow sealing ring 18 to expand. By tightly adhering the hollow sealing ring 18 to the inner wall of the valve body 1, the valve plate 11 and the valve body 1 can be further sealed, improving the sealing effect.

[0024] When the valve plate 11 needs to be rotated, by holding the handle 5 and the gripping rod 7, the gripping rod 7 is moved closer to the handle 5 and rotated, causing the locking block 13 to move out of the slot 6. At this time, the gripping rod 7 releases the pressure on the elastic air bag 16, the elastic air bag 16 extends, and then the hollow sealing ring 18 contracts. Then, by rotating the handle 5, the valve plate 11 can be rotated through the valve rod 4 to adjust the opening degree of the butterfly valve.

[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A leak-proof butterfly valve device with a multi-stage sealing structure, comprising a valve body (1), a valve column (2) at the top of the valve body (1), a valve stem (4) inside the valve column (2), a valve plate (11) located inside the valve body (1) at the lower end of the valve stem (4), and a handle (5) fixed at the upper end of the valve stem (4), characterized in that, A fixing plate (3) is fixedly sleeved on the upper side wall of the valve column (2), and a snap-fit ​​mechanism is provided at the lower end of the handle (5). Multiple slots (6) that cooperate with the snap-fit ​​mechanism are arranged at the lower end of the fixing plate (3). A receiving groove is provided on the peripheral wall of the valve plate (11), and a reinforcing sealing mechanism is provided inside the receiving groove. The locking mechanism includes two fixed blocks (8) fixedly connected to the lower end of the handle (5), and a gripping rod (7) is provided between the two fixed blocks (8). A pin (9) is provided through the gripping rod (7) and rotatably connected to the gripping rod (7). The two ends of the pin (9) respectively pass through the two fixed blocks (8), and the pin (9) is fixedly connected to the fixed blocks (8). A locking block (13) that cooperates with the slot (6) is fixedly provided at the upper end of the gripping rod (7). An elastic piece (10) is fixedly connected to the lower end of the handle (5). The end of the elastic piece (10) away from the handle (5) is fixedly connected to the gripping rod (7). The enhanced sealing mechanism includes a hollow sealing ring (18) disposed inside the receiving groove. The handle (5) and valve stem (4) are both provided with receiving channels (15). The receiving channels (15) are provided with connecting pipes (17). The lower end of the handle (5) is provided with an installation groove (14) communicating with the receiving channels (15). An elastic airbag (16) connected to the connecting pipe (17) is fixed on the inner top wall of the installation groove (14). The end of the connecting pipe (17) away from the elastic airbag (16) is connected to the hollow sealing ring (18).

2. The anti-leakage butterfly valve device with a multi-stage sealing structure according to claim 1, characterized in that, The card block (13) and the grip rod (7) are integrally formed.

3. The anti-leakage butterfly valve device with a multi-stage sealing structure according to claim 1, characterized in that, The elastic sheet (10) has a V-shaped structure and is made of steel.

4. The anti-leakage butterfly valve device with a multi-stage sealing structure according to claim 1, characterized in that, The valve body (1) has two sealing strips (12) on its inner wall, and the two sealing strips (12) are located on both sides of the valve plate (11).

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