CN115875472B - Automatic pressure control device for plug valve - Google Patents
Automatic pressure control device for plug valve Download PDFInfo
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- CN115875472B CN115875472B CN202211631253.XA CN202211631253A CN115875472B CN 115875472 B CN115875472 B CN 115875472B CN 202211631253 A CN202211631253 A CN 202211631253A CN 115875472 B CN115875472 B CN 115875472B
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Abstract
The invention belongs to the technical field of plug valve control, and particularly relates to an automatic plug valve pressure control device which comprises a valve body, wherein an arc-shaped groove is formed in the valve body, an arc-shaped plate is fixedly connected in the arc-shaped groove, a rack is fixedly connected to the inner side of the arc-shaped plate, a valve core is connected in a penetrating and rotating mode in the middle of the valve body, a movable groove is formed in the circumferential side wall of the valve core, a cleaning mechanism is arranged in the movable groove, the cleaning mechanism comprises a worm, a transmission gear, a worm wheel and an annular cleaning rod, and the worm is connected in the movable groove in a rotating mode. The invention can automatically clean the inner hole of the valve core, ensure the stability of the flowing pressure of the liquid, avoid manual cleaning and complex cleaning work, and can effectively cool and dissipate heat on the surface of the valve core and prevent the valve core from being deformed by heat, thereby ensuring the closing effect of the plug valve, reducing the moment of opening and closing the valve core at the moment of rotation and facilitating the opening and closing of the control device.
Description
Technical Field
The invention belongs to the technical field of plug valve control, and particularly relates to an automatic plug valve pressure control device.
Background
The plug valve is a straight-through valve capable of opening or closing a passage opening conveniently and rapidly, the plug valve utilizes a valve core with a through hole as an opening and closing valve, the opening and closing actions are realized by rotating the valve core, the use process of the plug valve is earlier, the development technology of the plug valve is very mature, and the plug valve is usually applied to a use scene with low pressure and smaller passage caliber due to simple structure and small fluid resistance.
However, the existing device for automatically controlling the pressure of the plug valve often has the following problems when in use:
the liquid flows through the plug valve for a long time, dirt or other impurities are easy to accumulate in the inner hole of the valve core in the plug valve, so that the area of the through hole of the inner hole of the valve core is reduced, the pressure of water flow is increased, the liquid circulation is influenced, manual cleaning is troublesome, and the overall service life of the plug valve can be reduced after long-term use;
because the structure of the plug valve is simpler and the opening and closing actions are quick, the plug valve often needs frequent opening and closing operations, but the frequent rotation of the valve core is easy to increase the friction with the valve body, and meanwhile, the valve core is made of metal materials, so that the heat of the valve core is increased, the valve core is deformed, and the closing effect of the plug valve is influenced;
in addition, because the opening and closing moment of the plug valve is larger, the opening and closing action can be completed only with larger force consumption, and the use pressure of the device is increased.
Disclosure of Invention
The invention aims to solve the problems that an inner hole of a valve core is difficult to clean, the temperature reducing effect of the valve core is poor and the opening and closing force of a plug valve is large in the background art, and provides an automatic plug valve pressure control device which can automatically clean the inner hole of the valve core, improve the temperature reducing effect of the valve core and solve the problem that the opening and closing force of the plug valve is large.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the automatic pressure control device for the plug valve comprises a valve body, wherein an arc-shaped groove is formed in the valve body, an arc-shaped plate is fixedly connected in the arc-shaped groove, a rack is fixedly connected to the inner side of the arc-shaped plate, a valve core is rotatably connected in the middle of the valve body in a penetrating mode, a movable groove is formed in the circumferential side wall of the valve core, and a cleaning mechanism is arranged in the movable groove;
the cleaning mechanism comprises a worm, a transmission gear, a worm wheel and an annular cleaning rod, wherein the worm is rotationally connected in a movable groove, the transmission gear is fixedly connected with the upper end of the worm, the transmission gear is meshed with a rack, the worm wheel is rotationally connected with the movable groove, the worm wheel is meshed with the worm, the worm wheel is rotationally connected with the side wall of a valve core in a penetrating mode through a bearing, and the annular cleaning rod is fixedly connected with the end portion of the worm wheel, which is located in an inner hole of the valve core.
The valve core top fixedly connected with changeover axle, valve body top fixedly connected with supports the box body, it is provided with two cooling mechanisms to support the symmetry in the box body, support and close body top fixedly connected with control box, be provided with actuating mechanism in the control box.
Further, cooling mechanism includes rolling disc, arch, piston cylinder, piston rod and compression spring, rolling disc fixed connection is on the circumference lateral wall of changeover axle, the edge of rolling disc bottom is provided with the arch, the piston cylinder passes through support fixed connection on the inside wall of box body, sealed sliding connection has the piston in the piston cylinder, fixedly connected with piston rod on the piston, the cover is equipped with compression spring on the piston rod outer wall, compression spring's upper and lower both ends are connected with piston rod, piston cylinder respectively.
Further, cooling mechanism still includes liquid inlet tank, connecting pipe, inlet, liquid outlet and nozzle, liquid storage tank fixed connection is on the box body, the intercommunication has the connecting pipe on the lateral wall of liquid storage tank, the connecting pipe runs through the box body lateral wall and communicates with the piston cylinder is inside through the inlet, piston cylinder bottom fixedly connected with nozzle, the nozzle passes through liquid outlet and the inside intercommunication of piston cylinder.
Further, actuating mechanism includes driving motor, first gear and second gear, top surface fixedly connected with driving motor in the control box, driving motor's output fixedly connected with first gear, the upper end of changeover axle runs through control box bottom and fixedly connected with second gear, second gear and first gear intermeshing.
Further, the liquid inlet and the liquid outlet are both provided with one-way valves.
Further, a sealing wear-resistant pad is arranged at the rotary connection part of the valve core and the valve body.
Further, the first gear is smaller in size than the second gear, and the number of teeth of the first gear is smaller than that of the second gear.
Further, the annular cleaning rod is attached to the inner hole of the valve core, and bristles are arranged on the annular cleaning rod.
Further, the base is fixedly connected to the lower portion of the valve body, and the lower end of the valve core is rotatably connected with the base through the bearing seat.
Compared with the prior art, the plug valve pressure automatic control device has the advantages that:
1. according to the invention, the cleaning mechanism is arranged, the annular cleaning rod is driven to brush the inner hole of the valve core through the rotation of the valve core, so that the inner hole of the valve core is automatically cleaned, the inner hole shrinkage caused by accumulation of dirt or other impurities is avoided, the stability of the liquid circulation pressure is ensured, the service life of the plug valve is prolonged, meanwhile, manual cleaning is not required, and the complex cleaning work is saved.
2. According to the invention, the cooling mechanism is arranged, the piston cylinder sprays cooling liquid on the surface of the valve core through rotating the switching shaft, so that the valve core is prevented from being deformed due to frictional heat generation between the valve core and the valve body, the surface of the valve core is effectively cooled and radiated in the opening and closing process, the deformation of the valve core due to the occurrence of a large temperature difference is avoided, and the closing effect of the plug valve is ensured.
3. According to the invention, the driving mechanism is arranged, and the valve core is driven to rotate through the transmission of the gears with fewer teeth and the gears with more teeth, so that the moment of opening and closing the valve core at the moment of rotation is effectively reduced, the opening and closing actions of the plug valve are conveniently controlled, and the using pressure of the device is reduced.
Drawings
FIG. 1 is a schematic diagram showing the analysis of the main view structure of an automatic plug valve pressure control device according to the present invention;
FIG. 2 is an enlarged view at A of FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
FIG. 4 is an enlarged view at C of FIG. 1;
fig. 5 is a schematic top view of an arc-shaped groove in the automatic plug valve pressure control device according to the present invention.
In the figure, 1 a valve body; 2 arc grooves; 3 arc-shaped plates; 4, a rack; 5 valve core; 6, a movable groove; 7 cleaning mechanism, 71 worm, 72 transmission gear, 73 worm wheel, 74 annular cleaning rod; 8, a transfer shaft; 9, supporting the box body; the cooling mechanism 10, the rotating disc 101, the protrusion 102, the piston cylinder 103, the piston 104, the piston rod 105, the compression spring 106, the liquid storage tank 107, the connecting pipe 108, the liquid inlet 109, the liquid outlet 110 and the nozzle 111; 11, a control box; 121 driving motor, 122 first gear, 123 second gear; 13 base.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.
As shown in fig. 1, fig. 3, fig. 4 and fig. 5, an automatic plug valve pressure control device comprises a valve body 1, a base 13 is fixedly connected below the valve body 1, the lower end of a valve core 5 is rotationally connected with the base 13 through a bearing seat, an arc-shaped groove 2 is formed in the valve body 1, an arc-shaped plate 3 is fixedly connected in the arc-shaped groove 2, a rack 4 is fixedly connected to the inner side of the arc-shaped plate 3, a valve core 5 is rotationally connected in the middle of the valve body 1, a sealing wear-resisting pad is arranged at the rotationally connected position of the valve core 5 and the valve body 1, a movable groove 6 is formed in the circumferential side wall of the valve core 5, a cleaning mechanism 7 is arranged in the movable groove 6, the cleaning mechanism 7 comprises a worm 71, a transmission gear 72, a worm wheel 73 and a ring-shaped cleaning rod 74, the worm 71 is rotationally connected in the movable groove 6, the upper end of the worm 71 is fixedly connected with the transmission gear 72, the transmission gear 72 is meshed with the rack 4, the worm wheel 73 is rotationally connected with the worm wheel 71, the worm 73 is rotationally connected with the side wall of the valve core 5 through a bearing, the end part of the ring-shaped cleaning rod 74 located in the inner hole 5 is rotationally connected with the ring-shaped cleaning rod 74, the ring-shaped cleaning rod 74 is attached to the inner hole 5, and the ring-shaped cleaning rod 74 is attached to the ring-shaped brush hair 5.
The driving motor 121 is started, the first gear 122 is driven to rotate through the output end of the driving motor 121, the first gear 122 is meshed with the second gear 123, so that the first gear 122 drives the second gear 123 and the switching shaft 8 to rotate, the valve core 5 is driven to rotate, the transmission gear 72 is meshed with the rack 4 to rotate, the worm 71 is driven to rotate, at the moment, the worm 71 drives the worm wheel 73 to rotate, so that the annular cleaning rod 74 rotates, the inner hole of the valve core 5 is brushed through bristles on the annular cleaning rod 74, automatic cleaning of the inner hole of the valve core 5 is achieved, the inner hole of the valve core 5 is prevented from being reduced due to dirt or other impurities, the stability of liquid circulation pressure is guaranteed, the service life of the plug valve is prolonged, manual cleaning is not needed, and complex cleaning work is saved.
As shown in fig. 1 and 2, the top of the valve core 5 is fixedly connected with a switching shaft 8, the upper side of the valve body 1 is fixedly connected with a supporting box body 9, two cooling mechanisms 10 are symmetrically arranged in the supporting box body 9, each cooling mechanism 10 comprises a rotating disc 101, a bulge 102, a piston cylinder 103, a piston 104, a piston rod 105 and a compression spring 106, the rotating disc 101 is fixedly connected to the circumferential side wall of the switching shaft 8, the bulge 102 is arranged at the edge of the bottom of the rotating disc 101, the piston cylinder 103 is fixedly connected to the inner side wall of the supporting box body 9 through a bracket, the piston 104 is in sealing sliding connection with the piston 103, the piston 104 is fixedly connected with the piston rod 105, the outer wall of the piston rod 105 is sleeved with the compression spring 106, the upper end and the lower end of the compression spring 106 are respectively connected with the piston rod 105 and the piston cylinder 103, the cooling mechanism 10 further comprises a liquid inlet 107, a connecting pipe 108, a liquid inlet 109, a liquid outlet 110 and a nozzle 111, the liquid inlet 109 are fixedly connected to the supporting box body 9, the side wall of the liquid inlet 107 is communicated with the connecting pipe 108, the liquid inlet 103 is communicated with the inner side wall of the piston 103 through the liquid inlet 103, the liquid inlet 103 is communicated with the inner side wall of the piston 103, the liquid outlet 103 is only through the liquid inlet 103, the liquid outlet 111 is connected with the liquid outlet 110 through the liquid inlet 111, the liquid outlet 110 is allowed to flow from the position of the inner side of the nozzle 110, the liquid outlet 110 is allowed to flow through the one-way through the connecting valve 110, and the liquid outlet 110 is allowed to flow through the liquid outlet 110, the cooling valve 110 is cooled through the liquid outlet 110 and the liquid outlet 110;
the driving motor 121 drives the switching shaft 8 to rotate, thereby make the rotating disc 101 and the protruding 102 rotate, when protruding part of protruding 102 contacts gradually and presses the piston rod 105 upper end, at this moment compression spring 106 is compressed, and make piston rod 105 promote piston 104 sealed down sliding in piston cylinder 103, make piston cylinder 103 internal pressure grow, thereby make piston cylinder 103 spray the coolant liquid to the upper surface of case 5 through nozzle 111, when protruding 102 keeps away from piston rod 105 gradually, the elasticity that compression spring 106 provided drives piston rod 105 and drives piston 104 upward movement, thereby make piston cylinder 103 internal pressure diminish, and then make piston cylinder 103 draw the coolant liquid from liquid storage tank 107 through connecting pipe 108, through setting up cooling mechanism 10, realize cooling liquid spray type to case 5 surface, prevent case 5 and valve body 1 between the friction heat generation lead to case 5 deformation, through opening and shutting in-process, the case 5 itself has been avoided the great difference in temperature to warp because of appearing, thereby the closure effect of plug valve has been guaranteed.
As shown in fig. 1, a control box 11 is fixedly connected above a support box body 9, a driving mechanism 12 is arranged in the control box 11, the driving mechanism 12 comprises a driving motor 121, a first gear 122 and a second gear 123, the inner top surface of the control box 11 is fixedly connected with the driving motor 121, the output end of the driving motor 121 is fixedly connected with the first gear 122, the upper end of a switching shaft 8 penetrates through the bottom of the control box 11 and is fixedly connected with the second gear 123, the second gear 123 is meshed with the first gear 122, the size of the first gear 122 is smaller than that of the second gear 123, and the number of teeth of the first gear 122 is smaller than that of the second gear 123;
the driving motor 121 drives the second gear 123 and the switching shaft 8 to rotate through the first gear 122, and because the number of teeth of the first gear 122 is smaller than that of the second gear 123, the instantaneous angular speed of the second gear 123 is smaller than that of the first gear 122, so that the rotation moment of the second gear 123 and the switching shaft 8 is smaller, the moment of opening and closing the valve core 5 in rotation moment is effectively reduced, the opening and closing actions of the plug valve are conveniently controlled, and the using pressure of the device is reduced.
The working principle of the invention is as follows:
when the rotary valve is used, the two ends of the valve body 1 are respectively communicated with a channel, the driving motor 121 is started, the first gear 122 is driven to rotate through the output end of the driving motor 121, the first gear 122 is meshed with the second gear 123, so that the first gear 122 drives the second gear 123 and the switching shaft 8 to rotate, the valve core 5 is driven to rotate, the transmission gear 72 is meshed with the rack 4, so that the transmission gear 72 is rotated, the worm 71 is driven to rotate, at the moment, the worm 71 drives the worm wheel 73 to rotate, the annular cleaning rod 74 rotates, the brush hair on the annular cleaning rod 74 brushes the inner hole of the valve core 5, the inner hole of the valve core 5 is automatically cleaned, dirt or other impurities are prevented from shrinking, the stability of liquid circulation pressure is guaranteed, the service life of the rotary valve is prolonged, manual cleaning is not needed, and complex cleaning work is saved;
the driving motor 121 drives the switching shaft 8 to rotate so as to enable the rotating disc 101 and the bulge 102 to rotate, when the bulge part of the bulge 102 gradually contacts and presses the upper end of the piston rod 105, the compression spring 106 is compressed at the moment, the piston rod 105 pushes the piston 104 to hermetically slide downwards in the piston cylinder 103, the pressure in the piston cylinder 103 is increased, so that the piston cylinder 103 sprays cooling liquid to the upper surface of the valve core 5 through the nozzle 111, when the bulge 102 gradually leaves the piston rod 105, the elastic force provided by the compression spring 106 drives the piston rod 105 to drive the piston 104 to move upwards, so that the pressure in the piston cylinder 103 is reduced, the piston cylinder 103 absorbs the cooling liquid from the liquid storage tank 107 through the connecting pipe 108, the cooling mechanism 10 is arranged, the cooling liquid on the surface of the valve core 5 is cooled in a spraying mode, the deformation of the valve core 5 caused by friction heat generation between the valve core 5 and the valve body 1 is prevented, the surface of the valve core 5 is effectively cooled in the opening and closing process, the deformation of the valve core 5 due to the occurrence of large temperature difference is avoided, and the closing effect of the plug valve is ensured;
the driving motor 121 drives the second gear 123 and the switching shaft 8 to rotate through the first gear 122, and because the number of teeth of the first gear 122 is smaller than that of the second gear 123, the instantaneous angular speed of the second gear 123 is smaller than that of the first gear 122, so that the rotation moment of the second gear 123 and the switching shaft 8 is smaller, the moment of opening and closing the valve core 5 in rotation moment is effectively reduced, the opening and closing actions of the plug valve are conveniently controlled, and the using pressure of the device is reduced.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The utility model provides a plug valve pressure automatic control device, includes valve body (1), its characterized in that, arc wall (2) have been seted up in valve body (1), fixedly connected with arc (3) in arc (2), the inboard fixedly connected with rack (4) of arc (3), the middle part of valve body (1) runs through and rotates and be connected with case (5), movable groove (6) have been seted up on the circumference lateral wall of case (5), be provided with cleaning mechanism (7) in movable groove (6);
the cleaning mechanism (7) comprises a worm (71), a transmission gear (72), a worm wheel (73) and an annular cleaning rod (74), wherein the worm (71) is rotationally connected in a movable groove (6), the transmission gear (72) is fixedly connected to the upper end of the worm (71), the transmission gear (72) is meshed with a rack (4) mutually, the worm wheel (73) is rotationally connected to the movable groove (6), the worm wheel (73) is meshed with the worm (71) mutually, the worm wheel (73) is rotationally connected with the side wall of the valve core (5) through a bearing, and the annular cleaning rod (74) is fixedly connected to the end part of the worm wheel (73) located in the inner hole of the valve core (5);
the valve is characterized in that the switching shaft (8) is fixedly connected to the top of the valve core (5), the supporting box body (9) is fixedly connected to the upper portion of the valve body (1), two cooling mechanisms (10) are symmetrically arranged in the supporting box body (9), the control box (11) is fixedly connected to the upper portion of the supporting box body (9), and the driving mechanism (12) is arranged in the control box (11).
2. The automatic plug valve pressure control device according to claim 1, wherein the cooling mechanism (10) comprises a rotating disc (101), a protrusion (102), a piston cylinder (103), a piston (104), a piston rod (105) and a compression spring (106), the rotating disc (101) is fixedly connected to the circumferential side wall of the adapter shaft (8), the protrusion (102) is arranged at the edge of the bottom of the rotating disc (101), the piston cylinder (103) is fixedly connected to the inner side wall of the support box body (9) through a bracket, the piston (104) is connected to the piston cylinder (103) in a sealing sliding manner, the piston rod (105) is fixedly connected to the piston (104), the compression spring (106) is sleeved on the outer wall of the piston rod (105), and the upper end and the lower end of the compression spring (106) are respectively connected with the piston rod (105) and the piston cylinder (103).
3. The automatic plug valve pressure control device according to claim 1, wherein the cooling mechanism (10) further comprises a liquid inlet tank (107), a connecting pipe (108), a liquid inlet (109), a liquid outlet (110) and a nozzle (111), the liquid inlet tank (107) is fixedly connected to the supporting box body (9), the connecting pipe (108) is communicated with the side wall of the liquid inlet tank (107), the connecting pipe (108) penetrates through the side wall of the supporting box body (9) and is communicated with the interior of the piston cylinder (103) through the liquid inlet (109), the nozzle (111) is fixedly connected to the bottom of the piston cylinder (103), and the nozzle (111) is communicated with the interior of the piston cylinder (103) through the liquid outlet (110).
4. The automatic plug valve pressure control device according to claim 1, wherein the driving mechanism (12) comprises a driving motor (121), a first gear (122) and a second gear (123), the driving motor (121) is fixedly connected to the inner top surface of the control box (11), the first gear (122) is fixedly connected to the output end of the driving motor (121), the second gear (123) is fixedly connected to the upper end of the switching shaft (8) penetrating through the bottom of the control box (11), and the second gear (123) is meshed with the first gear (122).
5. A plug valve pressure automatic control device according to claim 3, characterized in that the liquid inlet (109) and the liquid outlet (110) are provided with one-way valves.
6. The automatic plug valve pressure control device according to claim 1, wherein a sealing wear-resistant pad is arranged at the rotary connection part of the valve core (5) and the valve body (1).
7. The automatic plug valve pressure control device according to claim 4, wherein the first gear (122) is smaller in size than the second gear (123), and the number of teeth of the first gear (122) is smaller than that of the second gear (123).
8. The automatic plug valve pressure control device according to claim 1, wherein the annular cleaning rod (74) is attached to the inner hole of the valve core (5), and bristles are arranged on the annular cleaning rod (74).
9. The automatic plug valve pressure control device according to claim 1, wherein a base (13) is fixedly connected below the valve body (1), and the lower end of the valve core (5) is rotatably connected with the base (13) through a bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211631253.XA CN115875472B (en) | 2022-12-19 | 2022-12-19 | Automatic pressure control device for plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211631253.XA CN115875472B (en) | 2022-12-19 | 2022-12-19 | Automatic pressure control device for plug valve |
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| CN115875472A CN115875472A (en) | 2023-03-31 |
| CN115875472B true CN115875472B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211631253.XA Active CN115875472B (en) | 2022-12-19 | 2022-12-19 | Automatic pressure control device for plug valve |
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| CN102042422B (en) * | 2011-01-20 | 2013-10-09 | 上海高迪亚电子系统有限公司 | Hard sealing cock valve |
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| JP2000274551A (en) * | 1999-03-25 | 2000-10-03 | Denso Corp | Solenoid valve for fluid pressure control |
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