Butterfly valve convenient to lock

Abstract

The utility model discloses a butterfly valve convenient to lock, which comprises a valve body, a valve plate is rotatably connected in the valve body, a sealing ring is fixedly connected on the side surface of the valve plate, an adjusting shaft is arranged on the outer side of the valve body, one end of the adjusting shaft penetrates through the valve body to be fixedly connected with the side surface of the valve plate, and the adjusting shaft is rotatably connected with the valve body. A driving mechanism is arranged at the upper end of the adjusting shaft, a limiting ring is arranged on the outer side surface of the adjusting shaft in a sleeving mode, a sliding rod is slidably connected into the limiting ring, one end of the sliding rod is fixedly connected with a limiting block, the limiting block is located on one side of the adjusting shaft, multiple sets of limiting teeth are fixedly connected to the side surface of the adjusting shaft, and the multiple sets of limiting teeth correspond to the limiting block; a reset mechanism is arranged on the side surface of the other end of the sliding rod. The butterfly valve solves the problem that when a traditional butterfly valve is used, impact force generated by media conveyed in a pipeline deforms or damages a worm gear and a worm, the situation that the valve plate cannot be adjusted in the follow-up use process is avoided, and the service life of the butterfly valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve which is easy to lock. Background Art

[0002] A butterfly valve uses a circular disc that rotates with the stem to open, close, and regulate the flow path. Most butterfly valves are used to control the flow of media containing suspended solid particles. Depending on the strength of the seal, butterfly valves can also be used to control the flow of powdered and granular media. Consequently, they are widely used in the petroleum, chemical, metallurgy, electric power, food, pharmaceutical, water supply and drainage, and gas transportation industries.

[0003] Currently, existing butterfly valves generally use a turbine and a worm to drive the rotation of the valve disc to adjust the flow rate of the butterfly valve. However, the medium transported inside the pipeline generally causes a certain impact force on the valve disc, and the valve disc transmits the impact force to the turbine and the worm through the rotating shaft. During long-term use, the turbine and the worm may be deformed or damaged, resulting in the inability to adjust the valve disc and reducing the service life of the butterfly valve. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a butterfly valve that is easy to lock, which solves the problem that the impact force generated by the medium transported in the pipeline during use of the traditional existing butterfly valve causes deformation or damage to the turbine worm, avoids the inability to adjust the valve plate during subsequent use, and extends the service life of the butterfly valve.

[0005] Described retaining mechanism outer cover is a pair of fixedly earmarked plates, and retaining mechanism outer cover is a pair of fixedly earmarked plates, and retaining mechanism outer cover is a pair of fixedly earmarked plates, and retaining mechanism outer cover is a pair of fixedly earmarked plates.

[0006] Preferably, the driving mechanism includes a driving box, and the lower surface of the driving box is symmetrically fixedly connected to a support column, the lower end of the support column is fixedly connected to the outer surface of the valve body, the internal rotation of the driving box is connected to a turbine, and the side surface of the turbine is meshed with a worm, and one end of the worm passes through the driving box and is fixedly connected to a handle.

[0007] Preferably, a pointer is fixedly connected to the upper surface of the turbine via a rotating shaft passing through a drive box, an angle line is opened on the upper surface of the drive box, and one end of the pointer is aligned with the angle line.

[0008] Preferably, the reset mechanism includes a reset spring, and one end of the reset spring is fixedly connected to one end of the sliding rod, and the other end of the reset spring is fixedly connected to the side surface of the limiting ring.

[0009] Preferably, one end of the sliding rod is hinged to a sliding plate, and the lower end of the sliding plate is fixedly connected to a push rod, one side surface of the sliding plate is hinged to a support rod, and one end of the support rod is slidingly connected to one side surface of the support plate.

[0010] Preferably, a snap ring is fixedly connected to one side surface of the support plate, and the snap ring is aligned with the push rod.

[0011] The utility model provides a butterfly valve that is easy to lock. Compared with the existing technology, it has the following beneficial effects:

[0012] 1. The limiting ring sleeved on the side surface of the adjusting shaft, the limiting teeth fixedly connected to the side surface of the adjusting shaft, the sliding rod slidably connected inside the limiting ring, the limiting block fixedly connected to one end of the sliding rod, and the return spring cooperate with each other to limit the adjusting shaft, thereby preventing the valve disc inside the valve body from being subjected to the impact force of the medium and being transmitted to the worm and turbine inside the drive box to cause damage to the worm and turbine, thus avoiding the inability to adjust the valve disc during subsequent use and extending the service life of the butterfly valve;

[0013] 2. The angle line set on the upper surface of the drive box and the pointer fixedly connected to the upper surface of the turbine through the rotating shaft can be used to know the angle of the valve opening when the valve is opened, and it is convenient for the staff to know the flow rate of the butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is an enlarged structural diagram of point A in the present utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the limit ring in the utility model;

[0017] Figure 4This is a schematic diagram of the top structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the drive box in the present utility model.

[0019] In the figure: 1. valve body; 101. mounting flange; 102. valve disc; 103. support column; 2. drive box; 201. adjusting shaft; 202. handle; 203. limiting ring; 204. return spring; 205. sliding rod; 206. pressure plate; 207. push rod; 208. retaining ring; 209. support rod; 2010. support plate; 2011. limiting tooth; 2012. limiting block; 2013. angle line; 2014. pointer; 2015. worm; 2016. turbine. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 The utility model provides a technical solution: a butterfly valve that is easy to lock, including a valve body 1, the interior of the valve body 1 is rotatably connected to a valve disc 102, and the side surface of the valve disc 102 is fixedly connected to a sealing ring, an adjusting shaft 201 is provided on the outside of the valve body 1, and one end of the adjusting shaft 201 passes through the valve body 1 and is fixedly connected to the side surface of the valve disc 102, the adjusting shaft 201 is rotatably connected to the valve body 1, and the upper end of the adjusting shaft 201 is provided with a driving mechanism, the outer surface of the adjusting shaft 201 is sleeved with a limiting ring 203, and the inner surface of the limiting ring 203 is slidably connected to a sliding ring. The movable rod 205, one end of the sliding rod 205 is fixedly connected to the limiting block 2012, and the limiting block 2012 is located on one side of the adjusting shaft 201, and the side surface of the adjusting shaft 201 is fixedly connected with multiple groups of limiting teeth 2011, and the multiple groups of limiting teeth 2011 correspond to the limiting block 2012, and the side surface of the other end of the sliding rod 205 is provided with a reset mechanism, the lower surface of the limiting ring 203 is fixedly connected with the support plate 2010, and the lower end of the support plate 2010 is fixedly connected to the outer surface of the valve body 1, and the two ends of the valve body 1 are fixedly connected with the mounting flange 101.

[0022] As a technical optimization solution of the present invention, the driving mechanism includes a driving box 2, and the lower surface of the driving box 2 is symmetrically fixedly connected with a support column 103, the lower end of the support column 103 is fixedly connected to the outer surface of the valve body 1, the internal rotation of the driving box 2 is connected to a turbine 2016, and the side surface of the turbine 216 is meshed with a worm 2015, one end of the worm 2015 passes through the driving box 2 and is fixedly connected to a handle 202, and the staff can conveniently rotate the worm 2015 through the handle 202, so that the worm 2015 is rotated by the handle 202. The turbine 2016 can drive the adjusting shaft 201 to rotate, and the adjusting shaft 201 can drive the valve plate 102 to rotate, thereby opening the butterfly valve. The upper surface of the turbine 2016 is fixedly connected to the pointer 2014 through the rotating shaft through the drive box 2. The upper surface of the drive box 2 is provided with an angle line 2013, and one end of the pointer 2014 is aligned with the angle line 2013. The angle line 2013 and the pointer 2014 can facilitate the staff to observe the rotation angle of the valve plate 102 more intuitively, thereby facilitating the flow of the butterfly valve.

[0023] As a technical optimization solution of the present invention, the reset mechanism includes a reset spring 204, and one end of the reset spring 204 is fixedly connected to one end of the sliding rod 205, and the other end of the reset spring 204 is fixedly connected to the side surface of the limiting ring 203, which can limit the sliding rod 205 and make the limiting block 2012 at one end of the sliding rod 205 always fit on the side surface of the adjusting shaft 201, so that the limiting block 2012 cooperates with the limiting tooth 2011 to limit the adjusting shaft 201.

[0024] The cam 207 is fixed to the cam 208 of the first latch 201 and the second latch 209 is fixed to the cam 208 of the first latch 201. The cam 207 is fixed to the cam 208 of the first latch 201 and the second latch 209 is fixed to the cam 208 of the second latch 201.

[0025] When the utility model is in use, when the staff needs to open the valve plate 102, they first rotate the worm 2015 through the handle 202. At this time, the worm 2015 will drive the turbine 2016 to rotate, and the turbine 2016 will drive the adjusting shaft 201 and the valve plate 102 to rotate, thereby opening the valve plate 102. During the rotation of the adjusting shaft 201, the limiting teeth 2011 on the side surface of the adjusting shaft 201 will push the limiting block 2012 to move outward and then snap onto the side surface of the next set of limiting teeth 2011. The limiting teeth 2011 and the limiting block 2012 can limit the adjusting shaft 201, thereby avoiding the valve plate 102 from being opened. The impact force of the medium on the valve disc 102 after the valve disc 102 acts on the adjusting shaft 201, the turbine 2016 and the worm 2015 to avoid damage to the worm 2015 and the turbine 2016. When the valve disc 102 needs to be closed, the staff needs to push the push rod 207. Therefore, the push rod 207 can pull the sliding rod 205 outward through the sliding plate 206. At this time, the limit block 2012 will disengage from one side of the limit tooth 2011, and at the same time release the limit on the adjusting shaft 201. At this time, the push rod 207 is buckled into the inside of the retaining ring 208, and then the handle 202 is rotated in the opposite direction to close the valve disc 102.

[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve that is easy to lock, comprising a valve body (1), characterized in that: The valve body (1) is internally rotatably connected to a valve disc (102), and a sealing ring is fixedly connected to the side surface of the valve disc (102). An adjusting shaft (201) is provided on the outside of the valve body (1), and one end of the adjusting shaft (201) passes through the valve body (1) and is fixedly connected to the side surface of the valve disc (102). The adjusting shaft (201) is rotatably connected to the valve body (1), and a driving mechanism is provided on the upper end of the adjusting shaft (201). A limiting ring (203) is sleeved on the outer surface of the adjusting shaft (201), and a sliding rod (205) is slidably connected to the inside of the limiting ring (203). The sliding rod (205) is One end is fixedly connected to a limiting block (2012), and the limiting block (2012) is located on one side of the adjusting shaft (201); the side surface of the adjusting shaft (201) is fixedly connected to multiple groups of limiting teeth (2011), and the multiple groups of limiting teeth (2011) correspond to the limiting block (2012); the other end side surface of the sliding rod (205) is provided with a reset mechanism; the lower surface of the limiting ring (203) is fixedly connected to a support plate (2010), and the lower end of the support plate (2010) is fixedly connected to the outer surface of the valve body (1); and both ends of the valve body (1) are fixedly connected to mounting flanges (101).

2. A butterfly valve that is easy to lock according to claim 1, characterized in that: The driving mechanism comprises a driving box (2), and the lower surface of the driving box (2) is symmetrically fixedly connected to a support column (103), the lower end of the support column (103) is fixedly connected to the outer surface of the valve body (1), the internal rotation of the driving box (2) is connected to a turbine (2016), and the side surface of the turbine (2016) is meshedly connected to a worm (2015), and one end of the worm (2015) passes through the driving box (2) and is fixedly connected to a handle (202).

3. The butterfly valve that is easy to lock according to claim 2, characterized in that: The upper surface of the turbine (2016) is fixedly connected to a pointer (214) via a rotating shaft passing through the drive box (2); an angle line (2013) is provided on the upper surface of the drive box (2), and one end of the pointer (2014) is aligned with the angle line (2013).

4. The butterfly valve that is easy to lock according to claim 1, characterized in that: The reset mechanism includes a reset spring (204), one end of the reset spring (204) is fixedly connected to one end of the sliding rod (205), and the other end of the reset spring (204) is fixedly connected to the side surface of the limiting ring (203).

5. The butterfly valve that is easy to lock according to claim 1, characterized in that: One end of the sliding rod (205) is hingedly connected to a sliding plate (206), and the lower end of the sliding plate (206) is fixedly connected to a push rod (207); one side surface of the sliding plate (206) is hingedly connected to a support rod (209), and one end of the support rod (209) is slidably connected to a side surface of the support plate (2010).

6. The butterfly valve that is easy to lock according to claim 1, characterized in that: A snap ring (208) is fixedly connected to one side surface of the support plate (2010), and the snap ring (208) is aligned with the push rod (207).

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