Lug type butterfly valve gear box

Abstract

The utility model relates to the technical field of valve bodies, in particular to a lug type butterfly valve gearbox which comprises a valve body, a round shell and a pipe shell, a cover plate is installed on the upper side of the round shell and the upper side of the pipe shell, an oil storage tank is fixedly connected to the upper side of the cover plate, and the outer side of the oil storage tank is communicated with a conveying pipe. The other end of the conveying pipe is fixedly connected with the inner wall of the penetrating hole of the cover plate, a transmission part is installed at the pipe shell, a blocking part is installed at the transmission part, the transmission part comprises a shaft rod rotationally connected with the penetrating hole of the pipe shell, and the left end of the shaft rod is rotationally connected with the inner wall of the pipe shell. According to the lug type butterfly valve gear box, through the arrangement of the transmission part, the blocking part, the hand wheel and other structures, a transmission structure can be lubricated according to the requirements of a user in the use process of the lug type butterfly valve gear box, abrasion caused by friction between the transmission structures is reduced, and the transmission structure is more stable. And the use amount of the lubricating oil can be controlled as required.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, in particular to a lug-type butterfly valve gear box. Background Art

[0002] The butterfly valve, also known as the flap valve, is a regulating valve with a simple structure, and the lug-type valve body is a butterfly valve body with petal-shaped lugs arranged at circumferential intervals on the outer wall of the valve body. The application of the gearbox in the lug-type butterfly valve usually refers to a driving structure with a worm gear as the transmission, which is used to drive the opening and closing of the valve plate.

[0003] The existing lug-type butterfly valve gearbox is affected by friction between its various transmission structures, which will cause wear during the transmission process. As the wear increases, the wear rate of the transmission structure in the gearbox will accelerate, thereby affecting the staff's control over the butterfly valve plate and the control over the butterfly valve switch. Therefore, based on the above problems, a lug-type butterfly valve gearbox is proposed. Utility Model Content

[0004] The utility model aims to provide a lug-type butterfly valve gear box to solve the problem that the transmission structure of the existing lug-type butterfly valve gear box may be worn due to friction during use, thereby affecting the control of the valve plate by the staff.

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

[0006] A lug-type butterfly valve gearbox comprises a valve body, a round shell and a tube shell, a cover plate is installed on the upper side of the round shell and the tube shell, an oil storage tank is fixedly connected to the upper side of the cover plate, a transmission pipe is communicated with the outer side of the oil storage tank, the other end of the transmission pipe is fixedly connected to the perforated inner wall of the cover plate, a transmission part is installed at the tube shell, a sealing part is installed at the transmission part, the transmission part comprises a shaft rod rotatably connected to the perforated hole of the tube shell, the left end of the shaft rod is rotatably connected to the inner wall of the tube shell, and the outer side of the shaft rod is fixedly connected to a The worm gear is on the inner side of the shell, and the outer side of the worm gear is meshedly connected with a worm wheel fixedly connected to the upper end of the rotating shaft of the valve body, the right end of the shaft is fixedly connected with a square rod, the right end of the square rod is fixedly connected with a limiting block, the outer side of the square rod is slidably connected with a handwheel, and the sealing part includes a ring sleeved on the outer side of the square rod, the left side of the ring is fixedly connected with a center connecting strip, the left end of the center connecting strip passes through the tube shell and is fixedly connected with a connecting rod, the left end of the connecting rod is fixedly connected with a stopper, and a spring is sleeved on the outer side of the square rod.

[0007] Preferably, the circular shell and the tubular shell are fixedly connected, the circular shell and the tubular shell are communicated with each other, the worm gear is arranged on the inner side of the circular shell, and a gap is arranged between the worm gear and the circular shell.

[0008] Preferably, the perforation of the cover plate is arranged just above the meshing point of the worm wheel and the worm, the upper end surface of the stop block is in contact with the lower end surface of the cover plate, the stop block is arranged on the lower side of the perforation of the cover plate, and the length of the stop block is 2.5 times the inner diameter of the perforation of the cover plate.

[0009] Preferably, the center connecting strip and the tube shell are slidably connected, the inner diameter of the ferrule is larger than the diameter of the square rod, a gap is left between the inner wall of the ferrule and the square rod, and the spring is arranged between the right end face of the tube shell and the left end face of the ferrule.

[0010] Preferably, the inner hole of the handwheel is a square hole structure, the inner wall of the square hole of the handwheel fits with the outer end surface of the square rod, and the handwheel is arranged between the right end surface of the ring and the left end surface of the limit block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model provides a transmission part, a sealing part, a hand wheel and other structures, so that the user can drive the transmission part to rotate by turning the hand wheel, and the meshing of the worm and the worm wheel of the transmission part makes the rotation of the transmission part drive the worm wheel to rotate, and then the worm wheel drives the rotating shaft and the valve plate of the valve body to rotate. When the user wants to lubricate the meshing transmission of the worm and the worm wheel, the user can push the hand wheel toward the tube shell while turning the hand wheel, and the displacement of the hand wheel will push the sealing part to move, so that the block moves to the left to open the perforation of the cover plate. At this time, the lubricating oil in the oil storage tank can flow downward through the transmission pipe to the meshing part of the worm gear and the worm gear, and the lubricating oil will lubricate the meshing transmission part as the worm gear rotates, so that the lug type butterfly valve gear box can lubricate the transmission structure according to the needs of the user during use, reduce the wear caused by friction between the transmission structures, and control the amount of lubricating oil according to needs, solve the problem that the transmission structure of the existing lug type butterfly valve gear box will be worn due to friction during use, thereby affecting the control of the valve plate by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at A;

[0015] Figure 3 For this utility model Figure 1 A rear view structural diagram of ;

[0016] Figure 4 It is a structural schematic diagram of the transmission part of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the transmission part of the utility model;

[0018] Figure 6 This is a structural schematic diagram of the sealing part of the utility model;

[0019] Figure 7 For this utility model Figure 1 Schematic diagram of the structure of the oil tank without the cover.

[0020] In the figure: 1. valve body; 2. round shell; 3. tube shell; 4. cover plate; 5. oil storage tank; 6. transmission pipe; 7. transmission part; 71. shaft rod; 72. worm; 73. square rod; 74. limit block; 8. worm gear; 9. sealing part; 91. center connecting strip; 92. ring; 93. connecting rod; 94. block; 10. spring; 11. handwheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0024] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0026] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0027] See also Figure 1-7 , the utility model provides a technical solution:

[0028] A lug-type butterfly valve gearbox comprises a valve body 1, a round shell 2 and a tube shell 3, a cover plate 4 is installed on the upper side of the round shell 2 and the tube shell 3, an oil storage tank 5 is fixedly connected to the upper side of the cover plate 4, a transmission pipe 6 is communicated with the outer side of the oil storage tank 5, the other end of the transmission pipe 6 is fixedly connected to the perforated inner wall of the cover plate 4, a transmission part 7 is installed at the tube shell 3, a sealing part 9 is installed at the transmission part 7, the transmission part 7 comprises a shaft rod 71 rotatably connected to the perforation of the tube shell 3, the left end of the shaft rod 71 is rotatably connected to the inner wall of the tube shell 3, and the outer side of the shaft rod 71 is fixedly connected to a worm located on the inner side of the tube shell 3 72, the outer side of the worm 72 is meshedly connected with a worm wheel 8 fixedly connected to the upper end of the rotating shaft of the valve body 1, the right end of the shaft 71 is fixedly connected with a square rod 73, the right end of the square rod 73 is fixedly connected with a limiting block 74, the outer side of the square rod 73 is slidably connected with a hand wheel 11, the sealing part 9 includes a ring 92 sleeved on the outer side of the square rod 73, the left side of the ring 92 is fixedly connected with a center connecting strip 91, the left end of the center connecting strip 91 passes through the tube shell 3 and is fixedly connected with a connecting rod 93, the left end of the connecting rod 93 is fixedly connected with a stopper 94, and the outer side of the square rod 73 is sleeved with a spring 10.

[0029] The circular shell 2 and the tube shell 3 are fixedly connected, and the circular shell 2 and the tube shell 3 are connected. Through this arrangement, the worm wheel 8 and the worm 72 can mesh with each other. The worm wheel 8 is arranged on the inner side of the circular shell 2, and a gap is arranged between the worm wheel 8 and the circular shell 2. Through this arrangement, the rotation of the worm wheel 8 is not affected by the circular shell 2; the perforation of the cover plate 4 is arranged on the upper side of the meshing point of the worm wheel 8 and the worm 72. Through this arrangement, the lubricating oil flowing out of the perforation can flow to the meshing point of the worm wheel 8 and the worm 72. The upper end face of the stopper 94 fits with the lower end face of the cover plate 4. The stopper 94 is arranged on the lower side of the perforation of the cover plate 4. The length of the stopper 94 is 2.5 times the inner diameter of the perforation of the cover plate 4. Through this arrangement, the stopper 94 can block and close the perforation of the cover plate 4; the middle joint strip 91 and the tube shell 3 are slidingly connected. The inner diameter of the ring 92 is larger than the diameter of the square rod 73, and a gap is left between the inner wall of the ring 92 and the square rod 73. Through this arrangement, the rotation of the square rod 73 will not affect the ring 92. The spring 10 is arranged between the right end face of the tube shell 3 and the left end face of the ring 92. Through this arrangement, the elastic force of the spring 10 can reset the blocking portion 9; the inner hole position of the handwheel 11 is a square hole structure, and the inner wall of the square hole of the handwheel 11 fits with the outer end face of the square rod 73. Through this arrangement, the rotation of the handwheel 11 can drive the square rod 73 to rotate. The handwheel 11 is arranged between the right end face of the ring 92 and the left end face of the limit block 74. Through this arrangement, the limit block 74 can limit the handwheel 11, and the position of the handwheel 11 can push the ring 92.

[0030] Working process: The operation of the lug-type butterfly valve gearbox in use is as follows. First, when the user wants to control the valve plate of the valve body 1, the user can drive the transmission part 7 to rotate by turning the handwheel 11 (the rotation of the handwheel 11 will drive the square rod 73, the shaft rod 71 and the worm 72 to rotate). Through the meshing of the worm 72 of the transmission part 7 and the worm wheel 8, the rotation of the transmission part 7 can drive the worm wheel 8 to rotate, and then the rotating shaft and the valve plate of the valve body 1 are driven to rotate through the worm wheel 8. When the user wants to lubricate the meshing transmission of the worm 72 and the worm wheel 8, the user can push the handwheel 11 toward the tube shell 3 while turning the handwheel 11. The displacement of the handwheel 11 will push the blocking part 9 to move, so that the block 94 moves to the left to open the perforation of the cover plate 4. After the obstruction of the block 94 is removed, the lubricating oil in the oil storage tank 5 can flow downward through the transmission pipe 6 to the meshing part of the worm wheel 8 and the worm 72. The lubricating oil will lubricate the meshing part as the worm 72 rotates to reduce the wear in the transmission. After the hand wheel 11 is pulled back, the sealing part 9 can be reset by the elastic force of the spring 10, so that the block 94 re-seals the perforation of the cover plate 4, thereby completing the closure of the lower outlet of the transmission pipe 6 and stopping the lubricating oil from flowing out. Through the above operation, the lug-type butterfly valve gear box can lubricate the transmission structure according to the needs of the user during use, reducing the wear caused by friction between the transmission structures, and the amount of lubricating oil can be controlled as needed, so that the user can always effectively control the valve plate of the valve body 1.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lug-type butterfly valve gearbox, comprising a valve body (1), a round shell (2) and a tube shell (3), characterized in that: A cover plate (4) is installed on the upper side of the circular shell (2) and the tube shell (3); an oil storage tank (5) is fixedly connected to the upper side of the cover plate (4); a transmission pipe (6) is communicated with the outer side of the oil storage tank (5); the other end of the transmission pipe (6) is fixedly connected to the inner wall of the perforation of the cover plate (4); a transmission part (7) is installed on the tube shell (3); a blocking part (9) is installed on the transmission part (7); the transmission part (7) comprises a shaft rod (71) rotatably connected to the perforation of the tube shell (3); the left end of the shaft rod (71) is rotatably connected to the inner wall of the tube shell (3); the outer side of the shaft rod (71) is fixedly connected to a worm (72) located on the inner side of the tube shell (3); the outer side of the worm (72) is fixedly connected to the inner wall ... The side of the valve body (1) is meshedly connected with a worm gear (8) fixedly connected to the upper end of the rotating shaft of the valve body (1); the right end of the shaft rod (71) is fixedly connected to a square rod (73); the right end of the square rod (73) is fixedly connected to a limit block (74); the outer side of the square rod (73) is slidably connected to a hand wheel (11); the blocking portion (9) comprises a ring (92) sleeved on the outer side of the square rod (73); the left side of the ring (92) is fixedly connected to a middle connecting strip (91); the left end of the middle connecting strip (91) passes through the tube shell (3) and is fixedly connected to a connecting rod (93); the left end of the connecting rod (93) is fixedly connected to a stop block (94); and the outer side of the square rod (73) is sleeved with a spring (10).

2. The lug-type butterfly valve gearbox according to claim 1, characterized in that: The circular shell (2) and the tubular shell (3) are fixedly connected, the circular shell (2) and the tubular shell (3) are in communication, the worm gear (8) is arranged on the inner side of the circular shell (2), and a gap is provided between the worm gear (8) and the circular shell (2).

3. The lug-type butterfly valve gearbox according to claim 1, characterized in that: The through hole of the cover plate (4) is arranged just above the meshing point of the worm wheel (8) and the worm (72); the upper end surface of the stopper (94) is in contact with the lower end surface of the cover plate (4); the stopper (94) is arranged below the through hole of the cover plate (4); and the length of the stopper (94) is 2.5 times the inner diameter of the through hole of the cover plate (4).

4. The lug-type butterfly valve gearbox according to claim 1, characterized in that: The middle connecting bar (91) and the tube shell (3) are slidably connected, the inner diameter of the ferrule (92) is larger than the diameter of the square rod (73), a gap is left between the inner wall of the ferrule (92) and the square rod (73), and the spring (10) is arranged between the right end surface of the tube shell (3) and the left end surface of the ferrule (92).

5. The lug-type butterfly valve gearbox according to claim 1, characterized in that: The inner hole of the hand wheel (11) is a square hole structure, the inner wall of the square hole of the hand wheel (11) fits the outer end surface of the square rod (73), and the hand wheel (11) is arranged between the right end surface of the ring (92) and the left end surface of the limit block (74).

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