Electric sealing butterfly valve

Abstract

The utility model relates to the technical field of electric butterfly valves, and discloses an electric sealing butterfly valve which comprises a butterfly valve body and a connecting pipe, fixing discs are fixedly installed on the two sides of the butterfly valve body, a connecting disc is fixedly installed on the side wall of the connecting pipe, and fixing structures are arranged in the fixing discs. The fixing structure comprises a clamping groove, a clamping cylinder, a limiting block, a sliding plate, a connecting rod, an opening, a limiting opening, a sleeve and a screw rod, the clamping cylinder is connected with the clamping groove in an inserted mode, the clamping cylinder makes contact with the sliding block and drives the sliding block to move when moving, and the sliding block moves on the surface of the sliding rod; a connecting strip moves to drive an L-shaped extrusion plate hinged to the connecting strip to move downwards to extrude an inflatable air bag, so that the inflatable air bag is expanded, then gas in the inflatable air bag is introduced into an annular air bag through a ventilation pipe, and the annular air bag is expanded to seal the joint of a fixing disc and a connecting disc; therefore, the sealing performance of the butterfly valve body and the connecting pipe in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric butterfly valves, in particular to an electric sealing butterfly valve. Background Art

[0002] Electric butterfly valve is a type of electric valve and electric regulating valve. The main connection modes of electric butterfly valve are flange type and wafer type. The main sealing forms of electric butterfly valve are rubber seal and metal seal. Electric butterfly valve controls the switch of butterfly valve through power signal. It can be used as cut-off valve, control valve and check valve of pipeline system.

[0003] For example, a soft-sealed electric butterfly valve disclosed in publication number CN220828530U improves the sealing performance of the equipment and thus improves the use effect of the equipment by sealing multiple connection parts of external sealing pads, washers and compression pads.

[0004] However, the sealing structure cannot seal the connection gap between the two sets of connecting plates when in use, and the internal friction of the sealing gasket will produce a certain amount of loss during long-term use, which will affect the sealing of the valve body and the efficiency of the equipment. In view of this, we propose an electric sealing butterfly valve. Utility Model Content

[0005] The purpose of the utility model is to provide an electric sealing butterfly valve to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: an electric sealing butterfly valve, comprising a butterfly valve body and a connecting pipe, wherein both sides of the butterfly valve body are fixedly mounted with a fixing disk, a side wall of the connecting pipe is fixedly mounted with a connecting disk, a fixing structure is arranged inside the fixing disk, and the fixing structure comprises:

[0007] A card slot, wherein the card slot is provided on both sides of the fixed disk, a card barrel is fixedly installed on both sides of the connecting disk, both sides of the inner wall of the card barrel are slidably connected to a limit block, the inner wall of the card barrel is slidably connected to a slide plate, one end of a connecting rod is hinged to the side wall of the limit block, and the other end of the connecting rod is hinged to the side wall of the slide plate;

[0008] An opening is provided on both sides of the inner wall of the cartridge, and limited openings are provided on both sides of the inner wall of the slot, a sleeve is fixedly installed on the side wall of the connecting disk, one end of the screw is threadedly connected to the inside of the sleeve, and the other end of the screw is connected to a sleeve by rotation, the side wall of the sleeve is fixedly connected to the side wall of the slide, and a sealing structure is arranged inside the fixed disk.

[0009] Preferably, the sealing structure includes an annular cavity opened on the side wall of the fixed disk, a support ring is arranged inside the annular cavity, an annular airbag is fixedly installed on the side wall of the support ring, an inflatable airbag is fixedly installed on the inner wall of the annular cavity, and the inflatable airbag and the annular airbag are connected by a ventilation tube.

[0010] Preferably, a slide groove is provided on the inner wall of the slot, a slider is slidably connected to the inner wall of the slide groove, an L-shaped extrusion plate is slidably connected to the inner wall of the annular cavity, one end of a connecting strip is hinged to the upper end of the L-shaped extrusion plate, and the other end of the connecting strip is hinged to the lower end of the slider.

[0011] Preferably, a sliding rod is fixedly mounted on the inner wall of the sliding groove, the sliding block is slidably connected to the surface of the sliding rod, and a return spring is arranged on the surface of the sliding rod.

[0012] Preferably, one end of the return spring is fixedly connected to the inner wall of the slide groove, and the other end of the return spring is fixedly connected to the side wall of the slider.

[0013] Preferably, the annular airbag is half filled with gas, and the inflatable airbag is in a fully-filled state.

[0014] Compared with the prior art, the utility model provides an electric sealing butterfly valve, which has the following beneficial effects:

[0015] 1. The electric sealing butterfly valve improves the sealing effect of the connection between the butterfly valve body and the connecting pipe in the device by setting a sealing structure. The cartridge is inserted into the slot for connection. The movement of the cartridge drives the slider to move. The movement of the slider drives the L-shaped extrusion plate to move downward to squeeze the inflatable airbag, so that the inflatable airbag expands and then the gas inside it is passed into the annular airbag, so that the annular airbag expands to seal the connection between the cartridge and the slot, thereby improving the sealing of the butterfly valve body when in use.

[0016] 2. The electric sealing butterfly valve is provided with a fixed structure so as to facilitate the connection between the butterfly valve body and the connecting pipe. During installation, the user can connect the cartridge and the slot. After the cartridge and the slot are completely attached, the user can turn the screw to move it inside the sleeve. The movement of the screw drives the slide to move, and the movement of the slide drives the two sets of connecting rods on its side wall to move, thereby driving the limit block to move and engage with the limit port, thereby completing the connection between the butterfly valve body and the connecting pipe, without the need for the user to use multiple sets of bolts for installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of a top view of the cross-sectional structure of the card slot of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the card slot of the utility model from a side view;

[0020] Figure 4 It is a schematic diagram of a partially cutaway three-dimensional structure of the annular cavity of the utility model;

[0021] Figure 5 This is an enlarged structural diagram of part A of the utility model;

[0022] Figure 6 This is an enlarged structural diagram of part B of the utility model;

[0023] Figure 7 It is a schematic diagram of the enlarged structure of part C of the utility model.

[0024] In the figure: 1. butterfly valve body; 2. connecting pipe; 3. fixing structure; 4. sealing structure; 5. fixing plate; 6. connecting plate; 7. sliding rod; 8. reset spring; 31. slot; 32. cartridge; 33. limit block; 34. slide plate; 35. connecting rod; 36. opening; 37. limit port; 38. sleeve; 39. screw; 41. annular cavity; 42. support ring; 43. annular airbag; 44. inflatable airbag; 46. slide groove; 47. slider; 48. L-shaped extrusion plate; 49. connecting strip; 45. vent pipe. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 7 As shown, the utility model provides a technical solution: an electric sealing butterfly valve, including a butterfly valve body 1 and a connecting pipe 2, a fixing plate 5 is fixedly installed on both sides of the butterfly valve body 1, a connecting plate 6 is fixedly installed on the side wall of the connecting pipe 2, a fixing structure 3 is arranged inside the fixing plate 5, the fixing structure 3 includes a card slot 31 opened on both sides of the fixing plate 5, a cartridge 32 is fixedly installed on both sides of the connecting plate 6, both sides of the inner wall of the cartridge 32 are slidably connected to a limited block 33, the inner wall of the cartridge 32 is slidably connected to a slide plate 34, one end of a connecting rod 35 is hinged to the side wall of the limiting block 33, and the other end of the connecting rod 35 is connected to the slide plate 3 4 side walls are hinged, openings 36 are provided on both sides of the inner wall of the cartridge 32, and limiting openings 37 are provided on both sides of the inner wall of the slot 31. A sleeve 38 is fixedly installed on the side wall of the connecting plate 6, and one end of a screw 39 is threadedly connected to the sleeve 38, and the other end of the screw 39 is connected to a sleeve by rotation. The side wall of the sleeve is fixedly connected to the side wall of the slide plate 34, and a sealing structure 4 is provided inside the fixed plate 5. One end of the return spring 8 is fixedly connected to the inner wall of the slide groove 46, and the other end of the return spring 8 is fixedly connected to the side wall of the slider 47. The annular airbag 43 is half filled with gas, and the inflatable airbag 44 is in a state of being filled with gas.

[0026] Specifically, the fixing structure 3 of the technical solution of the utility model includes: a slot 31, a barrel 32, a limit block 33, a slide plate 34, a connecting rod 35, an opening 36, a limit port 37, a sleeve 38, and a screw 39.

[0027] In one embodiment of the present invention, a fixing structure 3 is provided to facilitate the connection and use of the butterfly valve body 1 and the connecting pipe 2. The user can completely connect the cartridge 32 on the side wall of the connecting disk 6 with the slot 31 on the side wall of the fixing disk 5. The diameters of the fixing disk 5 and the connecting disk 6 are the same, and the positions of the slot 31 and the cartridge 32 are adapted to facilitate the user to insert the cartridge 32. When installing the device, the user can connect the cartridge 32 with the inside of the slot 31. When the cartridge 32 is completely attached to the slot 31, the user can rotate the screw 39 to move it inside the sleeve 38. The provision of the sleeve 38 facilitates the left and right movement of the screw 39. At this time, the screw 39 moves The driving force will drive the slide plate 34 of its side wall to move, and the slide plate 34 is positioned and slid by contacting the inner wall of the cartridge 32. The movement of the slide plate 34 drives the two groups of connecting rods 35 of its side wall to move, and the connecting rods 35 further drive the two groups of limit blocks 33 hinged thereto to move relative to each other, and the limit blocks 33 are moved to engage with the two groups of limit openings 37. When moving, the limit blocks 33 will pass through the openings 36 and connect with the limit openings 37. The limit blocks 33 are slidably connected to the inner wall of the cartridge 32 to limit their position, thereby preventing the limit blocks 33 from deviating when moving, thereby improving the practicability of the device, thereby completing the connection and use of the butterfly valve body 1 and the connecting pipe 2, without the need for the user to use multiple groups of bolts for installation and use. The sealing structure 4 includes an annular cavity 41 provided on the side wall of the fixed disk 5, a support ring 42 is provided inside the annular cavity 41, an annular airbag 43 is fixedly installed on the side wall of the support ring 42, an inflatable airbag 44 is fixedly installed on the inner wall of the annular cavity 41, the inflatable airbag 44 and the annular airbag 43 are connected through a vent pipe 45, a slide groove 46 is provided on the inner wall of the card slot 31, a slider 47 is slidably connected to the inner wall of the slide groove 46, an L-shaped extrusion plate 48 is slidably connected to the inner wall of the annular cavity 41, and the upper end of the L-shaped extrusion plate 48 is hinged to one end of a connecting strip 49, and the other end of the connecting strip 49 is hinged to the lower end of the slider 47. The sealing effect of the connection between the butterfly valve body 1 and the connecting pipe 2 in the device is improved by providing the sealing structure 4, and the card sleeve 32 is inserted into the card slot 31. When the cartridge 32 moves, it will contact the slider 47 and drive it to move. The slider 47 moves on the surface of the slide rod 7, and when the slider 47 moves, the reset spring 8 will be stretched to facilitate the subsequent return. At this time, the movement of the slider 47 will drive the connecting strip 49 of its side wall to move, and the L-shaped extrusion plate 48 hinged to it will move downward through the movement of the connecting strip 49 to squeeze the inflatable airbag 44, so that the inflatable airbag 44 expands and then the gas inside it is passed into the annular airbag 43 through the vent pipe 45, so that the annular airbag 43 expands to seal the connection between the fixed disk 5 and the connecting disk 6, thereby improving the sealing performance of the butterfly valve body 1 and the connecting pipe 2 when in use.

[0028] Please continue reading Figure 1-Figure 7 A slide bar 7 is fixedly mounted on the inner wall of the slide groove 46 , a slider 47 is slidably connected to the surface of the slide bar 7 , and a return spring 8 is arranged on the surface of the slide bar 7 .

[0029] During operation, the user can fully insert the cartridge 32 into the slot 31, and then rotate the screw 39 to move it inside the sleeve 38. At this time, the movement of the screw 39 will drive the slide plate 34 on its side wall to move. The slide plate 34 contacts the inner wall of the cartridge 32 to slide in a positioning manner. The movement of the slide plate 34 drives the two groups of connecting rods 35 on its side wall to move. The connecting rod 35 then drives the two groups of limit blocks 33 hinged thereto to move relative to each other. The limit blocks 33 move to engage with the two groups of limit ports 37. When the cartridge 32 moves, it will contact the slider 47 and It will drive it to move, and the slider 47 moves on the surface of the slide rod 7, and the slider 47 will stretch the reset spring 8 when moving. At this time, the movement of the slider 47 will drive the connecting strip 49 to move, and the movement of the connecting strip 49 drives the L-shaped extrusion plate 48 hinged to it to move downward to squeeze the inflatable airbag 44, so that the inflatable airbag 44 expands and then the gas inside it is passed into the annular airbag 43 through the vent pipe 45, so that the annular airbag 43 expands to seal the connection between the fixed disk 5 and the connecting disk 6, thereby improving the practicability of the device.

[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An electric sealing butterfly valve, comprising a butterfly valve body (1) and a connecting pipe (2), wherein a fixing plate (5) is fixedly mounted on both sides of the butterfly valve body (1), and a connecting plate (6) is fixedly mounted on the side wall of the connecting pipe (2), characterized in that: A fixing structure (3) is arranged inside the fixing plate (5), and the fixing structure (3) comprises: A card slot (31), wherein the card slot (31) is provided on both sides of the fixed disk (5), a card barrel (32) is fixedly installed on both sides of the connecting disk (6), both sides of the inner wall of the card barrel (32) are slidably connected to a limit block (33), the inner wall of the card barrel (32) is slidably connected to a slide plate (34), one end of a connecting rod (35) is hinged to the side wall of the limit block (33), and the other end of the connecting rod (35) is hinged to the side wall of the slide plate (34); An opening (36) is provided on both sides of the inner wall of the cartridge (32); both sides of the inner wall of the slot (31) are provided with limit openings (37); a sleeve (38) is fixedly mounted on the side wall of the connecting disk (6); one end of a screw rod (39) is connected to the inner thread of the sleeve (38); the other end of the screw rod (39) is connected to a sleeve by rotation; the side wall of the sleeve is fixedly connected to the side wall of the slide plate (34); and a sealing structure (4) is provided inside the fixed disk (5).

2. The electric sealing butterfly valve according to claim 1, characterized in that: The sealing structure (4) comprises an annular cavity (41) formed on the side wall of the fixed disk (5); a support ring (42) is arranged inside the annular cavity (41); an annular airbag (43) is fixedly mounted on the side wall of the support ring (42); an inflatable airbag (44) is fixedly mounted on the inner wall of the annular cavity (41); the inflatable airbag (44) and the annular airbag (43) are connected via a ventilation pipe (45).

3. The electric sealing butterfly valve according to claim 2, characterized in that: The inner wall of the card slot (31) is provided with a slide groove (46), the inner wall of the slide groove (46) is slidably connected to a slider (47), the inner wall of the annular cavity (41) is slidably connected to an L-shaped extrusion plate (48), the upper end of the L-shaped extrusion plate (48) is hinged to one end of a connecting strip (49), and the other end of the connecting strip (49) is hinged to the lower end of the slider (47).

4. The electric sealing butterfly valve according to claim 3, characterized in that: A slide bar (7) is fixedly mounted on the inner wall of the slide groove (46); the slide block (47) is slidably connected to the surface of the slide bar (7); and a return spring (8) is arranged on the surface of the slide bar (7).

5. The electric sealing butterfly valve according to claim 4, characterized in that: One end of the return spring (8) is fixedly connected to the inner wall of the slide groove (46), and the other end of the return spring (8) is fixedly connected to the side wall of the slide block (47).

6. The electric sealing butterfly valve according to claim 2, characterized in that: The annular airbag (43) is half filled with gas, and the inflatable airbag (44) is in a state of being fully filled with gas.

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