A vibration-resistant ball valve

Abstract

The utility model discloses an anti-vibration ball valve, which belongs to the technical field of ball valves, including a valve body, a valve cover is arranged on the upper end of the valve body, a valve stem is threadedly connected in the valve cover, a valve plate is arranged on the lower end of the valve stem, a hand wheel is arranged on the upper end of the valve stem, and a fixing component is arranged on the upper side of the rear end of the valve cover; the fixing component comprises a cross plate, a sliding column, a limiting plate, a stud, a socket, a nut and a moving component. The utility model sets the fixing component, and after the hand wheel drives the valve plate at the lower end of the valve stem to be closed, the socket position on the hand wheel corresponds to the position of the sliding column, and the sliding column is pushed to slide in the cross plate through the limiting plate, and the sliding column enters the socket hole of the hand wheel, and then the nut is screwed onto the stud at the upper end of the sliding column, and the sliding column can limit and fix the hand wheel, and the hand wheel can be limited by setting the fixing component, so as to avoid the risk of the valve stem at the lower end of the hand wheel rotating due to vibration, thereby causing the valve plate at the lower end of the valve stem to rotate, affecting the sealing effect of the ball valve.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valves, and in particular relates to an anti-vibration ball valve. Background Art

[0002] Ball valve is also called stop valve. Ball valve is a kind of throttle valve, so called because the ball has a spherical cylindrical shape. It is mainly designed for throttling when it needs to be tightly closed, frequently opened and closed, and when the fluid needs to control the flow rate. Its most important feature is effective throttling, which minimizes the wire drawing phenomenon and thus reduces the erosion of the valve and valve seat. However, because the valve seat is parallel to the streamline, the change of flow direction when the fluid flows through this type of valve seat will cause turbulence in the valve and a decrease in the pressure drop. It is only suitable for use when there is no loss of head due to pressure drop.

[0003] Chinese patent application No. 2019216995408 discloses a vibration-resistant valve, which belongs to the field of valve technology, including a valve plate, which is connected to the valve body through a valve seat, and the outer side walls of the valve plate and the valve seat are fixedly connected with a metal sealing layer, and a rubber layer is bonded to the surface of the metal sealing layer. The valve cover, valve body and valve seat have the same wall thickness to avoid stress concentration at weak points during vibration and cause damage to the valve. The valve stem and the valve plate are strengthened by small bolts and small nuts to increase the connection strength, avoid loose connection between the valve stem and the valve plate during vibration, and increase the seismic strength of the valve. The valve plate and the valve seat are connected by a metal sealing layer and a rubber layer, and the metal sealing layer can be initially sealed to prevent internal leakage. The rubber has deformation reversibility and high elasticity, which further achieves the sealing effect while avoiding failure of the sealing structure due to abrasions, thereby increasing the service life of the valve gate.

[0004] In the above-mentioned patent, when the ball valve is in a closed state and is vibrated, there is a risk that the valve stem will rotate due to the vibration, thereby causing the valve plate at the lower end of the valve stem to rotate, affecting the sealing effect of the ball valve. At the same time, the original device does not have a filtering function, and impurities can easily enter the valve body. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides an anti-vibration ball valve, which has the characteristics that vibration is not likely to cause the valve stem and the valve plate to rotate when closed.

[0006] To achieve the above object, the utility model provides the following technical solutions: an anti-vibration ball valve, comprising a valve body, a valve cover is arranged at the upper end of the valve body, a valve stem is threadedly connected in the valve cover, a valve plate is arranged at the lower end of the valve stem, a hand wheel is arranged at the upper end of the valve stem, and a fixing assembly is arranged on the upper side of the rear end of the valve cover;

[0007] The fixed component includes a horizontal plate, a sliding column, a limit plate, a stud, a socket, a nut and a movable component, wherein a horizontal plate is arranged on the upper side of the rear end of the valve cover, a sliding column is arranged in the horizontal plate, two limit plates are arranged on the sliding column, a stud is arranged on the upper end of the sliding column, a nut is arranged on the upper side of the stud, a socket corresponding to the sliding column is arranged in the handwheel, and the horizontal plate and the valve cover are connected by the movable component.

[0008] Preferably, the moving component includes an annular plate, a slider, a fixing bolt, an annular groove, a fixing hole and a connecting plate, wherein an annular plate is provided on the surface of the valve cover, a slider is provided on the upper end of the annular plate, an annular groove corresponding to the slider is provided on the upper end of the annular plate, a fixing bolt is provided on one side of the upper end of the slider, a plurality of fixing holes corresponding to the fixing bolts are provided on the upper end of the annular plate, and the slider is connected to the cross plate by a connecting plate.

[0009] Preferably, after the slide post enters the insertion hole, the side edge of the slide post is in close contact with the inner wall of the insertion hole, and the stud and the slide post are a welded integral structure.

[0010] Preferably, there is an angle of ten degrees between adjacent fixing holes, and the annular plate and the valve cover, the connecting plate and the transverse plate, and the connecting plate and the slider are all spot welded.

[0011] Preferably, a filter screen is provided at one end of the valve body, blocks are provided at both ends of the filter screen, a slot corresponding to the block is provided at one end of the valve body, a rubber pad is provided on the inner wall of the slot, a groove is provided at one end of the block, and a pull rod is provided inside the groove.

[0012] Preferably, the rubber pad is bonded to the valve body by glue, the side of the pull rod is recessed into the side of the block, and after the block enters the slot, the side of the block is tightly attached to the inner wall of the slot.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model sets a fixing component. After the handwheel drives the valve plate at the lower end of the valve stem to close, the position of the socket on the handwheel corresponds to the position of the sliding column. The sliding column is pushed to slide in the cross plate through the limit plate, and the sliding column enters the socket of the handwheel. Then the nut is screwed onto the stud at the upper end of the sliding column. The sliding column can limit and fix the handwheel. The handwheel can be limited by setting the fixing component to avoid the risk of the valve stem at the lower end of the handwheel rotating due to vibration, thereby causing the valve plate at the lower end of the valve stem to rotate and affecting the sealing effect of the ball valve.

[0015] 2. The utility model sets a filter screen and puts the filter screen into one end of the valve body. The blocks at both ends of the filter screen enter the card slots. The rubber pads on the inner walls of the card slots are squeezed to prevent the card blocks from shaking in the card slots. When the valve body is installed and used, the filter screen plays a filtering role to prevent impurities from entering the valve body. At the same time, a groove is set at one end of the card block, and a pull rod is set in the groove, so that the card block can be pulled out of the card slot by the pull rod, thereby facilitating the removal and cleaning of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a cutaway stereogram of the utility model;

[0018] Figure 3 This is a three-dimensional diagram of the fixing assembly of the utility model;

[0019] In the figure: 1. valve body; 2. fixing assembly; 21. cross plate; 22. sliding column; 23. limit plate; 24. stud; 25. socket; 26. nut; 27. moving assembly; 271. annular plate; 272. sliding block; 273. fixing bolt; 274. annular groove; 275. fixing hole; 276. connecting plate; 3. valve cover; 4. hand wheel; 5. valve stem; 6. filter screen; 7. valve plate; 8. block; 9. slot; 10. rubber pad; 11. groove; 12. pull rod. DETAILED DESCRIPTION

[0020] 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.

[0021] Example 1

[0022] See also Figure 1-3 The utility model provides the following technical solutions: an anti-vibration ball valve, comprising a valve body 1, a valve cover 3 is arranged at the upper end of the valve body 1, a valve stem 5 is threadedly connected in the valve cover 3, a valve plate 7 is arranged at the lower end of the valve stem 5, a hand wheel 4 is arranged at the upper end of the valve stem 5, and a fixing component 2 is arranged on the upper side of the rear end of the valve cover 3;

[0023] The fixing assembly 2 includes a transverse plate 21, a sliding column 22, a limiting plate 23, a stud 24, a socket 25, a nut 26 and a moving assembly 27, wherein a transverse plate 21 is arranged on the upper side of the rear end of the valve cover 3, a sliding column 22 is arranged in the transverse plate 21, two limiting plates 23 are arranged on the sliding column 22, a stud 24 is arranged on the upper end of the sliding column 22, a nut 26 is arranged on the upper side of the stud 24, a socket 25 corresponding to the sliding column 22 is arranged in the handwheel 4, and the transverse plate 21 and the valve cover 3 are connected via the moving assembly 27.

[0024] Specifically, the moving assembly 27 includes an annular plate 271, a slider 272, a fixing bolt 273, an annular groove 274, a fixing hole 275 and a connecting plate 276, wherein an annular plate 271 is provided on the surface of the valve cover 3, a slider 272 is provided on the upper end of the annular plate 271, an annular groove 274 corresponding to the slider 272 is provided on the upper end of the annular plate 271, a fixing bolt 273 is provided on one side of the upper end of the slider 272, a plurality of fixing holes 275 corresponding to the fixing bolt 273 are provided on the upper end of the annular plate 271, and the slider 272 is connected to the cross plate 21 via a connecting plate 276.

[0025] By adopting the above technical solution, when the position of the sliding column 22 does not correspond to the position of the socket 25, the slider 272 is pushed to slide in the annular groove 274 of the annular plate 271, and the slider 272 drives the cross plate 21 to move through the connecting plate 276. After adjusting to the appropriate position, the fixing bolt 273 on the slider 272 is screwed into the corresponding fixing hole 275 on the annular plate 271 to achieve the effect of limiting the slider 272. By setting the moving component 27, the position of the sliding column 22 in the cross plate 21 can be moved and adjusted.

[0026] Specifically, after the slide post 22 enters the insertion hole 25, the side of the slide post 22 is in close contact with the inner wall of the insertion hole 25, and the stud 24 and the slide post 22 are welded into an integrated structure.

[0027] By adopting the above technical solution, after the slide post 22 enters the insertion hole 25, the slide post 22 has a better limiting effect on the hand wheel 4, and the stud 24 and the slide post 22 are welded into an integrated structure, which is more sturdy and durable.

[0028] Specifically, there is an angle of ten degrees between adjacent fixing holes 275 , and the annular plate 271 and the valve cover 3 , the connecting plate 276 and the transverse plate 21 , and the connecting plate 276 and the slider 272 are all spot welded.

[0029] By adopting the above technical solution, the fixing holes 275 can be evenly distributed, and spot welding makes the annular plate 271 and the valve cover 3, the connecting plate 276 and the cross plate 21, and the connecting plate 276 and the slider 272 more secure.

[0030] When the present embodiment is used, when the anti-vibration ball valve is used, the device is installed in a suitable position, and the valve stem 5 is rotated by the hand wheel 4. The valve stem 5 rotates and drives the valve plate 7 at the lower end to enter the valve body 1 for closing. The valve stem 5 is rotated in the opposite direction to drive the valve plate 7 to enter the valve cover 3. The valve body 1 is in an open state. By setting the fixing component 2, after the hand wheel 4 drives the valve plate 7 at the lower end of the valve stem 5 to close, the position of the socket 25 on the hand wheel 4 corresponds to the position of the slide column 22. The slide column 22 is pushed to slide in the cross plate 21 through the limit plate 23, and the slide column 22 enters the socket 25 of the hand wheel 4. Then, the nut 26 is screwed onto the stud 24 at the upper end of the slide column 22. The slide column 22 can limit and fix the hand wheel 4. By setting the fixing component The hand wheel 4 can be limited to avoid the risk of the valve stem 5 at the lower end of the hand wheel 4 being rotated due to vibration, thereby causing the valve plate 7 at the lower end of the valve stem 5 to rotate and affecting the sealing effect of the ball valve. By setting the moving component 27, when the position of the slide column 22 does not correspond to the position of the plug hole 25, the slider 272 is pushed to slide in the annular groove 274 of the annular plate 271, and the slider 272 drives the cross plate 21 to move through the connecting plate 276. After adjusting to a suitable position, the fixing bolt 273 on the slider 272 is screwed into the corresponding fixing hole 275 on the annular plate 271 to achieve the effect of limiting the slider 272. By setting the moving component 27, the position of the slide column 22 in the cross plate 21 can be moved and adjusted.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that: a filter screen 6 is provided at one end of the valve body 1, blocks 8 are provided at both ends of the filter screen 6, a groove 9 corresponding to the block 8 is provided at one end of the valve body 1, a rubber pad 10 is provided on the inner wall of the groove 9, a groove 11 is provided at one end of the block 8, and a pull rod 12 is provided inside the groove 11.

[0033] By adopting the above technical solution, the filter screen 6 is placed at one end of the valve body 1, and the blocks 8 at both ends of the filter screen 6 enter the slots 9. The rubber pads 10 on the inner walls of the slots 9 are squeezed to prevent the blocks 8 from shaking in the slots 9. When the valve body 1 is installed and used, the filter screen 6 plays a filtering role to prevent impurities from entering the valve body 1. At the same time, a groove 11 is provided at one end of the block 8, and a pull rod 12 is provided in the groove 11, so that the block 8 can be pulled out of the slot 9 by the pull rod 12, thereby facilitating the removal and cleaning of the filter screen 6.

[0034] Specifically, the rubber pad 10 is bonded to the valve body 1 by glue, the side of the pull rod 12 is recessed into the side of the block 8 , and after the block 8 enters the slot 9 , the side of the block 8 is in close contact with the inner wall of the slot 9 .

[0035] By adopting the above technical solution, it is prevented that the side of the pull rod 12 protrudes from the side of the clamping block 8 to affect the installation of the valve body 1 , and after the clamping block 8 enters the clamping groove 9 , it is not easy for the clamping block 8 to shake in the clamping groove 9 .

[0036] When this embodiment is used, a filter screen 6 is set and placed at one end of the valve body 1. The blocks 8 at both ends of the filter screen 6 enter the slots 9. The rubber pads 10 on the inner walls of the slots 9 are squeezed to prevent the blocks 8 from shaking in the slots 9. When the valve body 1 is installed and used, the filter screen 6 plays a filtering role to prevent impurities from entering the valve body 1. At the same time, a groove 11 is set at one end of the block 8, and a pull rod 12 is set in the groove 11, so that the block 8 can be pulled out of the slot 9 by the pull rod 12, thereby facilitating the removal and cleaning of the filter screen 6.

[0037] The structure and working principle of the valve body 1, valve cover 3, hand wheel 4, valve stem 5 and valve plate 7 in the utility model have been disclosed in a vibration-resistant valve disclosed in Chinese patent application No. 2019216995408. Its working principle is to rotate the valve stem 5 by the hand wheel 4, and the rotation of the valve stem 5 drives the valve plate 7 at the lower end to enter the valve body 1 for closing. The reverse rotation of the valve stem 5 can drive the valve plate 7 to enter the valve cover 3, and the valve body 1 is in an open state.

[0038] The working principle and use process of the utility model are as follows: when the anti-vibration ball valve is used, the device is installed in a suitable position, and the valve stem 5 is rotated by the hand wheel 4. The valve stem 5 rotates and drives the valve plate 7 at the lower end to enter the valve body 1 for closing. The valve stem 5 is rotated in the opposite direction to drive the valve plate 7 to enter the valve cover 3, and the valve body 1 is in an open state. By setting the fixing component 2, the hand wheel 4 drives the valve plate 7 at the lower end of the valve stem 5 to be closed, and the position of the plug hole 25 on the hand wheel 4 corresponds to the position of the slide column 22. The slide column 22 is pushed to slide in the cross plate 21 through the limit plate 23, and the slide column 22 enters the plug hole 25 of the hand wheel 4. Then, the nut 26 is screwed onto the stud 24 at the upper end of the slide column 22, and the slide column 22 can limit and fix the hand wheel 4. By setting the fixing component 2, the hand wheel 4 can be limited to avoid the risk of the valve stem 5 at the lower end of the hand wheel 4 being rotated due to vibration, thereby causing the valve plate 7 at the lower end of the valve stem 5 to rotate, affecting the sealing effect of the ball valve, and by setting the moving component 27, when the slide column When the position of the slider 272 does not correspond to the position of the jack 25, the slider 272 is pushed to slide in the annular groove 274 of the annular plate 271, and the slider 272 drives the cross plate 21 to move through the connecting plate 276. After adjusting to a suitable position, the fixing bolt 273 on the slider 272 is screwed into the corresponding fixing hole 275 on the annular plate 271 to achieve the effect of limiting the slider 272. By setting the moving assembly 27, the position of the slide column 22 in the cross plate 21 can be moved and adjusted. Filter 6, put the filter 6 into one end of the valve body 1, the blocks 8 at both ends of the filter 6 enter the slots 9, and the rubber pads 10 on the inner walls of the slots 9 are squeezed to prevent the blocks 8 from shaking in the slots 9. When the valve body 1 is installed and used, the filter 6 plays a filtering role to prevent impurities from entering the valve body 1. At the same time, a groove 11 is set at one end of the block 8, and a pull rod 12 is set in the groove 11, so that the block 8 can be pulled out of the slot 9 by the pull rod 12, thereby facilitating the removal and cleaning of the filter 6.

[0039] 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 vibration-resistant ball valve, comprising a valve body, characterized in that: The upper end of the valve body is provided with a valve cover, a valve stem is threadedly connected in the valve cover, a valve plate is provided at the lower end of the valve stem, a hand wheel is provided at the upper end of the valve stem, and a fixing component is provided on the upper side of the rear end of the valve cover; The fixed component includes a horizontal plate, a sliding column, a limit plate, a stud, a socket, a nut and a movable component, wherein a horizontal plate is arranged on the upper side of the rear end of the valve cover, a sliding column is arranged in the horizontal plate, two limit plates are arranged on the sliding column, a stud is arranged on the upper end of the sliding column, a nut is arranged on the upper side of the stud, a socket corresponding to the sliding column is arranged in the handwheel, and the horizontal plate and the valve cover are connected by the movable component.

2. The anti-vibration ball valve according to claim 1, characterized in that: The moving assembly includes an annular plate, a slider, a fixing bolt, an annular groove, a fixing hole and a connecting plate, wherein an annular plate is arranged on the surface of the valve cover, a slider is arranged on the upper end of the annular plate, an annular groove corresponding to the slider is arranged on the upper end of the annular plate, a fixing bolt is arranged on one side of the upper end of the slider, a plurality of fixing holes corresponding to the fixing bolts are arranged on the upper end of the annular plate, and the slider is connected to the cross plate by a connecting plate.

3. The anti-vibration ball valve according to claim 2, characterized in that: After the slide post enters the insertion hole, the side edge of the slide post is in close contact with the inner wall of the insertion hole, and the stud and the slide post are a welded integral structure.

4. The anti-vibration ball valve according to claim 3, characterized in that: There is an angle of ten degrees between the adjacent fixing holes, and the annular plate and the valve cover, the connecting plate and the transverse plate, and the connecting plate and the sliding block are all welded by spot welding.

5. The anti-vibration ball valve according to claim 1, characterized in that: A filter is arranged at one end of the valve body, blocks are arranged at both ends of the filter, a slot corresponding to the block is arranged at one end of the valve body, a rubber pad is arranged on the inner wall of the slot, a groove is arranged at one end of the block, and a pull rod is arranged inside the groove.

6. The anti-vibration ball valve according to claim 5, characterized in that: The rubber pad is bonded to the valve body by glue, the side of the pull rod is recessed into the side of the block, and after the block enters the slot, the side of the block is in close contact with the inner wall of the slot.

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