A track ball valve that is easy to maintain

Abstract

The utility model discloses a track ball valve that is convenient for maintenance, and relates to the field of track ball valves. The track ball valve that is convenient for maintenance comprises a valve body, a ball valve core is rotatably arranged inside the valve body, a through hole is provided on the outer side of the ball valve core, a mounting seat is installed on the top of the valve body, a valve stem is rotatably arranged on the top of the mounting seat, the valve stem comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are clamped together, and a rotating assembly is arranged on the top of the second connecting rod; the bottom end of the first connecting rod extends toward the inside of the valve body and is fixedly installed with an inclined sealing block, and a fixed block is installed on the top of the ball valve core. The track ball valve that is convenient for maintenance can set the first connecting rod and the sealing block as an integral structure, and the sealing block can play a sealing role and can also be connected to the ball valve core in a transmission manner, which will greatly reduce the degree of wear on the sealing block, and thus will not affect the sealing performance of the sealing block.

Description

Technical Field

[0001] The utility model relates to the technical field of track ball valves, in particular to a track ball valve which is convenient to maintain. Background Art

[0002] The closing part of the orbital ball valve is a sphere, which rotates around the center line of the valve body to open and close. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline.

[0003] When opening and closing the track ball valve, the valve stem needs to be rotated to drive the ball valve core at the bottom to rotate. In order to facilitate the inspection and maintenance of the valve stem, the bottom end of the valve stem is generally connected to the ball valve core through a ball guide. The ball guide is a combination of a wedge groove and a wedge pin, which facilitates the disassembly of the valve stem. However, after long-term use, the wedge pin is easily worn, thereby affecting the sealing between the valve stem and the ball valve core. Therefore, the present application proposes a track ball valve that is easy to maintain. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a track ball valve that is easy to maintain, which solves the problem that after long-term use, the wedge-shaped column pin is easily worn out, thereby affecting the sealing between the valve stem and the ball valve core.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a track ball valve with convenient maintenance, including a valve body, a ball valve core is rotatably arranged inside the valve body, a through hole is opened on the outside of the ball valve core, a rotating shaft is fixedly installed at the bottom of the ball valve core, and the bottom end of the rotating shaft is rotatably connected to the inner bottom wall of the valve body, a mounting seat is installed on the top of the valve body, a valve stem is rotatably arranged on the top of the mounting seat, the valve stem includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are clamped together, and a rotating component is arranged on the top of the second connecting rod;

[0006] The bottom end of the first connecting rod extends toward the inside of the valve body and is fixedly installed with an inclined sealing block. A fixing block is installed on the top of the ball valve core. The bottom end of the sealing block is arranged inside the fixing block, and the rotation axis of the ball valve core and the vertical center axis of the valve stem coincide with each other.

[0007] Preferably, a sealing ring is embedded on the inner wall of the valve body, and the sealing ring fits tightly against the outer side of the ball valve core.

[0008] Preferably, a filling layer is provided inside the mounting seat.

[0009] Preferably, a first clamping groove and a second clamping groove are respectively formed at the bottom end of the first connecting rod and the top end of the second connecting rod, and the first connecting rod is clamped with the second connecting rod through the first clamping groove and the second clamping groove.

[0010] Preferably, the rotating assembly includes a first mounting shell, a second mounting shell and a third mounting shell, and the first mounting shell, the second mounting shell and the third mounting shell are sequentially mounted on the top of the mounting seat by bolts, and the top end of the first connecting rod sequentially passes through the first mounting shell and extends toward the interior of the second mounting shell and is connected to a transmission shaft.

[0011] Preferably, the top end of the transmission shaft extends toward the inside of the third mounting shell, a rotating handle is provided on the outside of the third mounting shell, and the rotating handle is transmission-connected to the transmission shaft.

[0012] The utility model discloses a track ball valve that is convenient to maintain, and has the following beneficial effects:

[0013] During use, the track ball valve which is easy to maintain has a valve stem composed of a first connecting rod and a second connecting rod. On the one hand, when the valve stem is inspected and repaired, the first connecting rod and the second connecting rod can be directly separated. On the other hand, the first connecting rod and the sealing block can be set as an integral structure. The sealing block can play a sealing role and can also perform transmission connection with the ball valve core, which will greatly reduce the degree of wear on the sealing block and will not affect the sealing performance of the sealing block. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the valve stem of the utility model.

[0018] In the figure: 1. valve body; 101. ball valve core; 102. through hole; 103. rotating shaft; 104. sealing ring; 2. mounting seat; 201. valve stem; 2011. first connecting rod; 2012. second connecting rod; 2013. first slot; 2014. second slot; 202. sealing block; 203. fixing block; 204. filling layer; 3. rotating assembly; 301. first mounting shell; 302. second mounting shell; 303. third mounting shell; 304. transmission shaft; 305. rotating handle. DETAILED DESCRIPTION

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] The utility model embodiment discloses a track ball valve which is convenient for maintenance. Figure 1-3 As shown, it includes a valve body 1, a ball valve core 101 is rotatably provided inside the valve body 1, a through hole 102 is provided on the outer side of the ball valve core 101, and a rotating shaft 103 is fixedly installed at the bottom of the ball valve core 101, and the bottom end of the rotating shaft 103 is rotatably connected to the inner bottom wall of the valve body 1, a mounting seat 2 is installed on the top of the valve body 1, a valve stem 201 is rotatably provided on the top of the mounting seat 2, and the valve stem 201 includes a first connecting rod 2011 and a second connecting rod 2012, the first connecting rod 2011 and the second connecting rod 2012 are clamped together, and a rotating component 3 is provided on the top of the second connecting rod 2012;

[0021] The bottom end of the first connecting rod 2011 extends toward the inside of the valve body 1 and is fixedly installed with an inclined sealing block 202. A fixing block 203 is installed on the top of the ball valve core 101. The bottom end of the sealing block 202 is arranged inside the fixing block 203, and the rotating axis 103 of the ball valve core 101 coincides with the vertical center axis of the valve stem 201.

[0022] During use, since the valve stem 201 is composed of a first connecting rod 2011 and a second connecting rod 2012, on the one hand, when the valve stem 201 is inspected and repaired, the first connecting rod 2011 and the second connecting rod 2012 can be directly separated, and on the other hand, the first connecting rod 2011 and the sealing block 202 can be set as an integral structure. The sealing block 202 can play a sealing role and can also perform a transmission connection with the ball valve core 101, which will greatly reduce the degree of wear on the sealing block 202 and will not affect the sealing performance of the sealing block 202.

[0023] The rotating assembly 3 can drive the second connecting rod 2012 to rotate, and then drive the first connecting rod 2011 to rotate. Since the first connecting rod 2011 is connected to the ball valve core 101 through the sealing block 202 and the fixing block 203, the ball valve core 101 can be driven to rotate accordingly.

[0024] Furthermore, a sealing ring 104 is embedded on the inner wall of the valve body 1 , and the sealing ring 104 is tightly fitted to the outer side of the ball valve core 101 .

[0025] The sealing ring 104 is provided so as to effectively seal the ball valve core 101 .

[0026] Furthermore, a filling layer 204 is disposed inside the mounting seat 2 , and the filling layer 204 can provide a certain sealing effect on the valve stem 201 .

[0027] Furthermore, a first clamping slot 2013 and a second clamping slot 2014 are respectively formed at the bottom end of the first connecting rod 2011 and the top end of the second connecting rod 2012 , and the first connecting rod 2011 is clamped with the second connecting rod 2012 via the first clamping slot 2013 and the second clamping slot 2014 .

[0028] Since the first connecting rod 2011 is engaged with the second connecting rod 2012 through the first clamping groove 2013 and the second clamping groove 2014 , the first connecting rod 2011 and the second connecting rod 2012 can be installed and removed by lateral movement.

[0029] Specifically disclosed, the rotating assembly 3 includes a first mounting shell 301, a second mounting shell 302 and a third mounting shell 303. The first mounting shell 301, the second mounting shell 302 and the third mounting shell 303 are sequentially mounted on the top of the mounting base 2 by bolts, and the top end of the first connecting rod 2011 sequentially passes through the first mounting shell 301 and extends toward the interior of the second mounting shell 302 and is connected to the transmission shaft 304.

[0030] When the first mounting shell 301, the second mounting shell 302 and the third mounting shell 303 are sequentially mounted on the top of the mounting base 2 by bolts, the first connecting rod 2011 engaged with the second connecting rod 2012 is fixed, and when the first connecting rod 2011 is rotated, the second connecting rod 2012 can be driven to rotate accordingly.

[0031] Furthermore, the top end of the transmission shaft 304 extends toward the inside of the third installation shell 303 , and a rotating handle 305 is provided on the outside of the third installation shell 303 , and the rotating handle 305 is transmission-connected to the transmission shaft 304 .

[0032] Since the rotating handle 305 is in transmission connection with the transmission shaft 304 , and the top end of the first connecting rod 2011 is connected with the transmission shaft 304 , the first connecting rod 2011 can be directly driven to rotate by the rotating handle 305 .

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A track ball valve with convenient maintenance, comprising a valve body (1), characterized in that: A ball valve core (101) is rotatably arranged inside the valve body (1), a through hole (102) is provided on the outer side of the ball valve core (101), a rotating shaft (103) is fixedly arranged at the bottom of the ball valve core (101), and the bottom end of the rotating shaft (103) is rotatably connected to the inner bottom wall of the valve body (1), a mounting seat (2) is installed at the top of the valve body (1), a valve stem (201) is rotatably arranged at the top of the mounting seat (2), the valve stem (201) comprises a first connecting rod (2011) and a second connecting rod (2012), the first connecting rod (2011) and the second connecting rod (2012) are clamped together, and a rotating component (3) is arranged at the top of the second connecting rod (2012); The bottom end of the first connecting rod (2011) extends toward the interior of the valve body (1) and is fixedly mounted with an inclined sealing block (202); a fixing block (203) is mounted on the top of the ball valve core (101); the bottom end of the sealing block (202) is arranged inside the fixing block (203); and the rotating shaft (103) of the ball valve core (101) and the vertical center axis of the valve stem (201) coincide with each other.

2. A track ball valve with convenient maintenance according to claim 1, characterized in that: A sealing ring (104) is embedded on the inner wall of the valve body (1), and the sealing ring (104) is tightly fitted to the outer side of the ball valve core (101).

3. The track ball valve with convenient maintenance according to claim 1, characterized in that: A filling layer (204) is provided inside the mounting seat (2).

4. The track ball valve with convenient maintenance according to claim 1, characterized in that: A first clamping groove (2013) and a second clamping groove (2014) are respectively provided at the bottom end of the first connecting rod (2011) and the top end of the second connecting rod (2012), and the first connecting rod (2011) is clamped with the second connecting rod (2012) via the first clamping groove (2013) and the second clamping groove (2014).

5. The track ball valve with convenient maintenance according to claim 1, characterized in that: The rotating assembly (3) comprises a first mounting shell (301), a second mounting shell (302) and a third mounting shell (303); the first mounting shell (301), the second mounting shell (302) and the third mounting shell (303) are sequentially mounted on the top of the mounting seat (2) by means of bolts; the top end of the first connecting rod (2011) sequentially passes through the first mounting shell (301) and extends toward the inside of the second mounting shell (302) and is connected to a transmission shaft (304).

6. A track ball valve with convenient maintenance according to claim 5, characterized in that: The top end of the transmission shaft (304) extends toward the inside of the third installation shell (303), and a rotating handle (305) is provided on the outside of the third installation shell (303), and the rotating handle (305) is transmission-connected to the transmission shaft (304).

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