Ellipsoid-driven oil drain valve with locking function

Abstract

The invention relates to the technical field of valves, in particular to an ellipsoid-driven oil drain valve with a locking function. Comprising a valve body and further comprises a locking mechanism, the locking mechanism comprises a first sleeve, the first sleeve is fixedly connected to the valve body, a first valve rod is movably connected into the first sleeve, a first elastic piece is arranged between the first valve rod and the first sleeve, and a connecting frame is fixedly connected into the first sleeve. Through the design of the locking mechanism, the situation that a worker carries goods and touches the first valve rod, or the first valve rod is vibrated when a steam turbine is started, so that a valve element moves, the oil drain valve loosens, and lubricating oil is discharged can be prevented, through the design of the protection mechanism, when the oil drain valve discharges old oil, a sealing ring can be prevented from making contact with the old oil, and the service life of the oil drain valve is prolonged. The sealing ring is affected by the temperature or chemical substances of old oil, aging or corrosion of the sealing ring is accelerated, the service life of the sealing ring is effectively prolonged, and the sealing effect of the oil drain valve is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and particularly to an oil drain valve driven by an ellipsoid and having a locking function. Background Art

[0002] An oil drain valve is a one-way valve body used for discharging lubricating oil in large or small equipment such as steam turbines. In the lubrication system of a steam turbine, the main function of the oil drain valve is to discharge the old oil in the lubrication system to facilitate the replacement of new oil, thereby ensuring that the lubrication system can lubricate and cool normally.

[0003] When starting a steam turbine, the steam turbine will generate large vibrations due to factors such as the operation of internal mechanical components, medium flow, and thermal stress. When the existing oil drain valve is vibrated, the valve stem and the valve core will move. After the oil drain valve is vibrated multiple times or for a long time, the lubricating oil in the lubrication system will leak. When discharging the old oil, the chemical substances and temperature in the old oil will affect the sealing ring of the valve core. The chemical substances are likely to corrode the sealing ring, and the high temperature will cause the sealing ring of the valve core to deform, resulting in a decrease in the sealing ability of the sealing ring. Summary of the Invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides an oil drain valve driven by an ellipsoid and having a locking function.

[0005] Technical Solution: An oil drain valve driven by an ellipsoid and having a locking function includes a valve body and a locking mechanism. The locking mechanism includes a first sleeve, the first sleeve is fixedly connected to the valve body, a first valve stem is movably connected in the first sleeve, a first elastic member is arranged between the first valve stem and the first sleeve, a connecting frame is fixedly connected in the first sleeve, a first airbag is installed at the bottom of the connecting frame, a first special-shaped groove is formed in the first sleeve in a penetrating manner, a sliding plate and a limiting pin are slidably connected in the first special-shaped groove, one end of the limiting pin is fixedly connected to the sliding plate, a second elastic member is arranged between the sliding plate and the first special-shaped groove, a second valve stem is rotatably connected in the valve body, a limiting groove for cooperating with the limiting pin is formed on the outer wall of the second valve stem, an extension shaft is fixedly connected between the first valve stem and the second valve stem, and a protection mechanism is arranged in the valve body.

[0006] In addition, particularly preferably, the locking mechanism further includes a U-shaped frame, the U-shaped frame is fixedly connected to the top of the first sleeve, a limiting plate is slidably connected in the U-shaped frame, a groove is formed on one side of the limiting plate, a clamping groove for cooperating with the limiting plate is formed on the outer wall of the first valve stem, a third elastic member is arranged between the limiting plate and the U-shaped frame, a pull rod is slidably connected through the U-shaped frame, and the pull rod is fixedly connected to the limiting plate.

[0007] In addition, it is particularly preferred that the protective mechanism includes a valve core, the valve core is arranged in the valve body, a second special-shaped groove is opened in the valve core, a sealing ring, a vertical plate and a sliding shaft are slidably connected in the second special-shaped groove, a fourth elastic member is arranged between the vertical plate and the second special-shaped groove, the sealing ring is fixedly connected to one side of the vertical plate, the sliding shaft is fixedly connected to one side of the vertical plate, and the outer wall of the second valve stem is fixedly connected to a first extrusion block used in conjunction with the sliding shaft.

[0008] In addition, it is particularly preferred that the protective mechanism also includes an extrusion rod, the extrusion rod is fixedly connected to the outer wall of the second valve stem, an L-shaped plate used in conjunction with the extrusion rod is slidably connected in the second special-shaped groove of the valve core, an annular groove used in conjunction with the L-shaped plate is provided on the outer wall of the sliding shaft, an installation groove connected to the second special-shaped groove is provided in the valve core, a through hole connected to the second special-shaped groove and the installation groove is through-opened on the vertical plate, and a second airbag is installed in the installation groove.

[0009] In addition, it is particularly preferred that the protective mechanism also includes an elliptical block, the outer wall of the second valve stem is rotatably connected to the elliptical block, the inner wall of the elliptical block is provided with a fan-shaped groove, the outer wall of the second valve stem is fixedly connected to a second extrusion block, and the second extrusion block is inserted into the fan-shaped groove of the elliptical block and slides therein.

[0010] In addition, it is particularly preferred that a cleaning mechanism is also included, the cleaning mechanism includes a second sleeve, the second sleeve is fixedly connected to the valve body via a mounting plate, a sliding disk is slidably connected to the second sleeve, a fifth elastic member is provided between the sliding disk and the inner wall of the second sleeve, the front end of the sliding disk is rotatably connected to an elastic telescopic rod, the telescopic end of the elastic telescopic rod is rotatably connected to the valve core, and a first cleaning rod is fixedly connected to the outer wall of the fixed end of the elastic telescopic rod.

[0011] In addition, it is particularly preferred that the cleaning mechanism also includes a push block, the push block and the second cleaning rod are symmetrically slidably connected in the valve body, a sixth elastic member is arranged between the push block and the inner wall of the valve body, plug-in grooves are provided at both ends of the first cleaning rod, and a pin is fixedly connected to the outer wall of the second cleaning rod for use with the plug-in groove.

[0012] In addition, it is particularly preferred that the cleaning mechanism further includes a guide block, the guide block is fixedly connected to the outer wall of the fixed end of the elastic telescopic rod, the inner wall of the second sleeve is provided with a guide groove, and the guide block is inserted into the guide groove and slides therein.

[0013] In addition, it is particularly preferred that a cooling mechanism is also included, the cooling mechanism includes a liquid storage box, the outer wall of the valve body is fixedly connected to the liquid storage box, the outer wall of the liquid storage box is connected to a guide tube, a guide cover is fixedly connected in the guide tube, an impeller is rotatably connected in the guide cover, one end of the impeller axle passes through the guide cover and the guide tube and is connected to a first transmission assembly, an air guide groove is through-opened on the outer wall of the valve body, the first transmission assembly is connected to the inner wall of the air guide groove, a circular ring is rotatably connected in the air guide groove, the first transmission assembly is connected to the circular ring, and a plurality of evenly distributed air guide plates are fixed to the outer wall of the circular ring.

[0014] In addition, it is particularly preferred that the cooling mechanism also includes an air guide frame, the outer wall of the guide pipe is rotatably connected to the air guide frame, the other end of the impeller axle rotates through the guide cover of the guide pipe and the guide pipe and is connected to a second transmission assembly, and the second transmission assembly is connected to the air guide frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention can prevent the worker from touching the first valve stem when carrying goods, or the first valve stem from being affected by the vibration of the turbine when starting up, causing the valve core to move, causing the oil drain valve to loosen and discharge the lubricating oil, through the design of the locking mechanism. When the oil drain valve discharges the old oil, the sealing ring can be prevented from contacting the old oil, causing the sealing ring to be affected by the temperature or chemicals of the old oil, causing the sealing ring to age or corrode faster, thereby effectively increasing the service life of the sealing ring and improving the sealing effect of the oil drain valve.

[0016] 2. The present invention can limit the sliding shaft by designing the L-shaped plate, so that the second airbag remains in an expanded state, preventing the sealing ring from resetting when the sliding shaft moves away from the first extrusion block, causing the sealing ring to contact with the old oil, thereby further improving the protection effect of the sealing ring.

[0017] 3. Through the design of the cleaning mechanism of the present invention, when the telescopic end of the elastic telescopic rod is contracted to the limit, the second cleaning rod is pushed by the push block, so that the pin of the second cleaning rod can be inserted into the plug-in groove of the first cleaning rod, and the guide block slides along the guide groove of the second sleeve, so that the first cleaning rod and the second cleaning rod can clean the outer wall of the valve core, preventing impurities in the old oil from stagnating between the valve core and the inner wall of the valve body, resulting in poor oil drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the locking mechanism of the present invention; Figure 3 It is a schematic diagram of the installation of the shaped frame of the present invention; Figure 4Schematic diagram of the protection mechanism of the present invention; Figure 5 Installation schematic diagram at the sliding shaft of the present invention; Figure 6 Schematic diagram of the cleaning mechanism of the present invention; Figure 7 Installation schematic diagram at the second cleaning rod of the present invention; Figure 8 Installation schematic diagram at the guide block of the present invention; Fig. 9 Schematic diagram of the cooling mechanism of the present invention; Fig.10 Installation schematic diagram at the impeller of the present invention.

[0019] In the figure: 1, valve body; 201, first sleeve; 202, first valve rod; 203, connecting frame; 204, first airbag; 205, sliding plate; 206, limit pin; 207, second valve rod; 208, extension shaft; 301, C-shaped frame; 302, limit plate; 303, pull rod; 401, valve core; 402, sealing ring; 403, vertical plate; 404, sliding shaft; 405, first extrusion block; 501, extrusion rod; 502, L-shaped plate; 601, second airbag; 701, elliptical block; 702, second extrusion block; 801, second sleeve; 802, sliding disk; 803, elastic telescopic rod; 804, first cleaning rod; 805, push block; 806, second cleaning rod; 901, guide block; 1001, liquid storage box; 1002, diversion pipe; 1003, impeller; 1004, ring; 1005, air guide plate; 1101, air guide frame. Specific embodiments

[0020] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0021] Embodiment 1 An oil drain valve driven by an ellipse and having a locking function, as Figure 1-Figure 3As shown in the figure, it includes a valve body 1 and also includes a locking mechanism. The locking mechanism includes a first sleeve 201. The first sleeve 201 is fixedly connected to the valve body 1. A first valve rod 202 is movably connected inside the first sleeve 201. A first elastic member is provided between the first valve rod 202 and the first sleeve 201. The first elastic member is a compression spring. The first elastic member is sleeved on the outer wall of the first valve rod 202. A connecting frame 203 is fixedly connected inside the first sleeve 201. A first airbag 204 is installed at the bottom of the connecting frame 203. When the first valve rod 202 is lifted upward, the first airbag 204 can be contracted. A first special-shaped groove is penetrated and opened inside the first sleeve 201. A sliding plate 205 and a limit pin 206 are horizontally slidably connected inside the first special-shaped groove. One end of the limit pin 206 is fixedly connected to the sliding plate 205. A second elastic member is provided between the sliding plate 205 and the first special-shaped groove. The second elastic member is a compression spring. A second valve rod 207 is rotatably connected inside the valve body 1. A limit groove for cooperating with the limit pin 206 is opened on the outer wall of the second valve rod 207. The limit pin 206 is used to limit the second valve rod 207. An extension shaft 208 is fixedly connected between the first valve rod 202 and the second valve rod 207. A protection mechanism is provided inside the valve body 1.

[0022] As Figure 2 shown Figure 3 in the figure, the locking mechanism further includes a U-shaped frame 301. The top end of the first sleeve 201 is fixedly connected to the U-shaped frame 301. A limit plate 302 is horizontally slidably connected inside the U-shaped frame 301. A groove is opened at the rear side of the limit plate 302. A clamping groove for cooperating with the limit plate 302 is opened on the outer wall of the first valve rod 202. When the limit plate 302 is clamped into the clamping groove of the first valve rod 202, the limit plate 302 can be limited. A third elastic member is provided between the limit plate 302 and the U-shaped frame 301. The third elastic member is a compression spring. A pull rod 303 is horizontally slidably penetrated through the U-shaped frame 301. The pull rod 303 is fixedly connected to the limit plate 302.

[0023] As Figure 4 shown Figure 5 in the figure, the protection mechanism includes a valve core 401. The valve core 401 is provided inside the valve body 1. A second special-shaped groove is opened inside the valve core 401. A sealing ring 402, a vertical plate 403 and a sliding shaft 404 are slidably connected inside the second special-shaped groove. A fourth elastic member is provided between the vertical plate 403 and the second special-shaped groove. The fourth elastic member is a compression spring. The sealing ring 402 is fixedly connected to the front side of the vertical plate 403. The sliding shaft 404 is fixedly connected to the front side of the vertical plate 403. A first extrusion block 405 for cooperating with the sliding shaft 404 is fixedly connected to the outer wall of the second valve rod 207. When the first extrusion block 405 rotates, the sealing ring 402 can be horizontally slid.

[0024] As Figure 5As shown, the protection mechanism also includes an extrusion rod 501, the outer wall of the second valve stem 207 is fixedly connected with the extrusion rod 501, the extrusion rod 501 is located on the upper side of the first extrusion block 405, the second special-shaped groove of the valve core 401 is vertically slidably connected with an L-shaped plate 502 used in conjunction with the extrusion rod 501, the outer wall of the sliding shaft 404 is provided with an annular groove used in conjunction with the L-shaped plate 502, the L-shaped plate 502 is used to limit the sliding shaft 404, the valve core 401 is provided with a mounting groove connected to the second special-shaped groove, the upper part of the vertical plate 403 is through-typely provided with a through hole connected to the second special-shaped groove and the mounting groove, the second airbag 601 is installed in the mounting groove, and when the sealing ring 402 slides with the vertical plate 403, the second airbag 601 can be expanded.

[0025] like Figure 5 As shown, the protection mechanism also includes an elliptical block 701, the outer wall of the second valve stem 207 is rotatably connected to the elliptical block 701, the elliptical block 701 is located at the lower side of the first extrusion block 405, the inner wall of the elliptical block 701 is provided with a fan-shaped groove, the outer wall of the second valve stem 207 is fixedly connected to the second extrusion block 702, the second extrusion block 702 is inserted into the fan-shaped groove of the elliptical block 701 and slides therein, and when the second extrusion block 702 squeezes the inner wall of the fan-shaped groove of the elliptical block 701, the elliptical block 701 can be rotated.

[0026] like Figure 6-Figure 8 As shown, a cleaning mechanism is also included, which includes a second sleeve 801. The second sleeve 801 is fixedly connected to the rear side of the inner wall of the valve body 1 through a mounting plate. A sliding disk 802 is horizontally slidably connected in the second sleeve 801. A fifth elastic member is arranged between the sliding disk 802 and the inner wall of the second sleeve 801. The fifth elastic member is a compression spring. The front end of the sliding disk 802 is rotatably connected to an elastic telescopic rod 803. The telescopic end of the elastic telescopic rod 803 is rotatably connected to the valve core 401. The outer wall of the fixed end of the elastic telescopic rod 803 is fixedly connected to a first cleaning rod 804. After the valve core 401 moves, it fits with the first cleaning rod 804.

[0027] like Figure 6 and Figure 7 As shown, the cleaning mechanism also includes a push block 805, and the push block 805 and the second cleaning rod 806 are symmetrically slidably connected in the valve body 1 up and down, and a sixth elastic member is arranged between the push block 805 and the inner wall of the valve body 1, and the sixth elastic member is an elastic telescopic shaft. The push block 805 is used in conjunction with the second cleaning rod 806, and the second cleaning rod 806 is used in conjunction with the valve core 401. Both ends of the first cleaning rod 804 are provided with plug-in grooves, and the outer wall of the second cleaning rod 806 is fixedly connected with a pin used in conjunction with the plug-in groove.

[0028] like Figure 8As shown, the cleaning mechanism also includes a guide block 901, the outer wall of the fixed end of the elastic telescopic rod 803 is fixedly connected to the guide block 901, the inner wall of the second sleeve 801 is provided with a guide groove, the guide block 901 is inserted into the guide groove and slides therein, and the guide block 901 can rotate the first cleaning rod 804 by cooperating with the guide groove.

[0029] Initially, the first elastic member is in a released state, the bottom end of the first valve stem 202 is against the top end of the connecting frame 203, the second elastic member is in a released state, and the limit pin 206 is inserted into the limit groove of the second valve stem 207 to limit the second valve stem 207. When the oil drain valve needs to be opened, the staff first lifts the first valve stem 202 upwards through the hand wheel on the first valve stem 202. The first valve stem 202 is forced to lift upwards, and a gap is generated between the bottom end of the first valve stem 202 and the top end of the connecting frame 203. The telescopic end of the extension shaft 208 extends. As the first valve stem 202 is lifted upwards, the air in the first airbag 204 enters the gap between the bottom end of the first valve stem 202 and the top end of the connecting frame 203. The first airbag 204 contracts, and the air between the first valve stem 202 and the top of the inner wall of the first sleeve 201 is squeezed, and the air squeezes the sliding plate 205 through the first special-shaped groove. The sliding plate 205 is forced to drive the limit pin 206 to slide horizontally. After sliding, the limit pin 206 disengages from the limit groove of the second valve stem 207. The second valve stem 207 can move after being freed from the restriction. At the same time, the slot of the first valve stem 202 is aligned with the groove of the limit plate 302. The third elastic member is released to drive the limit plate 302 to slide horizontally. The limit plate 302 drives the pull rod 303 to slide. After sliding, the limit plate 302 is stuck in the slot of the first valve stem 202 to limit the first valve stem 202, so that the first valve stem 202 maintains a stable height. Then the first valve stem 202 is rotated, and the first valve stem 202 drives the second valve stem 207 to rotate through the extension shaft 208, so as to open the oil drain valve. When the oil drain valve needs to be closed, the first valve stem 202 is rotated in the opposite direction by the hand wheel on the first valve stem 202, so as to rotate and reset the second valve stem 207, and then the pull rod 303 is horizontally pulled to the side away from the first valve stem 202, and the pull rod 303 drives the limit plate 302 to slide horizontally, and the third elastic member is contracted under the force, and the limit plate 302 slides and disengages from the slot of the first valve stem 202. The first valve stem 202 can move vertically after being freed from the restriction, and the first elastic member is released to drive the first valve stem 202 to slide and reset, and the first valve stem 202 and the first sleeve 201 are aligned. The gap between the tops of the inner walls increases, and the air between the first valve stem 202 and the connecting frame 203 returns to the first airbag 204, the first airbag 204 expands and resets, and the air in the first special-shaped groove returns to between the top of the inner wall of the first sleeve 201 and the first valve stem 202, the second elastic member is released and drives the limit pin 206 to slide and reset through the sliding plate 205, and the limit pin 206 is reset and re-engaged in the limit groove of the second valve stem 207 to limit the second valve stem 207. Through the above steps, the valve core can be effectively prevented from being vibrated, or when other external forces apply downward pressure to the handwheel at the top of the first valve stem 202, the first valve stem 202 drives the second valve stem 207 to rotate, causing the oil drain valve to open.

[0030] Initially, the fourth elastic member is in a released state, the sealing ring 402 is fitted with the inner wall of the valve body 1, the front end of the valve core 401 squeezes the outer wall of the elliptical block 701, the elliptical block 701 cannot move, the end of the squeezing rod 501 contacts the inclined surface of the L-shaped plate 502, and there is a gap between the bottom of the L-shaped plate 502 and the outer wall of the sliding shaft 404. When the oil drain valve is opened, the second valve stem 207 drives the first squeezing block 405, the squeezing rod 501 and the second squeezing block 702 to rotate counterclockwise, the first squeezing block 405 gradually approaches the sliding shaft 404 when rotating, the squeezing rod 501 gradually moves away from the L-shaped plate 502 when rotating, and the second squeezing block 702 slides in the fan-shaped groove of the elliptical block 701. At this time, the elliptical block 701 is squeezed by the valve core 401 and cannot move, and then the first squeezing block 405 is squeezed by the valve core 401. 05 contacts and squeezes the inclined surface of the sliding shaft 404, and the sliding shaft 404 is forced to slide horizontally to the rear side, and drives the sealing ring 402 to slide horizontally through the vertical plate 403. It is worth noting that the elastic force of the fifth elastic member is greater than the elastic force of the elastic telescopic rod 803, and the elastic force of the elastic telescopic rod 803 is greater than the elastic force of the fourth elastic member. At this time, the fourth elastic member is forced to shrink, and then the inner wall of the sealing ring 402 is no longer in contact with the outer wall of the second air bag 601. As the sealing ring 402 slides, the air between the sealing ring 402 and the second special-shaped groove of the valve core 401 is squeezed and enters the second air bag 601 through the through hole of the vertical plate 403. The air volume in the second air bag 601 increases, causing the second air bag 601 to expand. At the same time, the squeezing rod 501 is no longer in contact with the L-shaped plate 502 , the bottom of the L-shaped plate 502 is aligned with the annular groove of the sliding shaft 404, the L-shaped plate 502 is free from the restriction of the extrusion rod 501, slides downward and is stuck in the annular groove of the sliding shaft 404, limiting the sliding shaft 404, the sliding shaft 404 limits the sealing ring 402 through the vertical plate 403, the fourth elastic member remains in a contracted state, the second airbag 601 remains in contact with the inner wall of the second special-shaped groove of the valve core 401, so that the second airbag 601 and the sealing ring 402 remain closed, and then the second extrusion block 702 contacts and squeezes the inner wall of the fan-shaped groove of the elliptical block 701, so that the elliptical block 701 rotates synchronously with the second valve stem 207, and the elliptical block 701 rotates to squeeze the outer wall of the valve core 401, and the valve core 401 is forced to move horizontally to the side away from the second valve stem 207. The valve core 401 drives the sliding shaft 404 and the L-shaped plate 502 to move, and the gaps between the sliding shaft 404 and the L-shaped plate 502 and the first extrusion block 405 and the extrusion rod 501 increase. It is worth noting that the elastic force of the fifth elastic member is greater than the elastic force of the elastic telescopic rod 803. When the valve core 401 moves, the telescopic end of the elastic telescopic rod 803 is forced to shrink. As the valve core 401 moves, the sixth elastic member is gradually released, and the corresponding second cleaning rod 806 is pushed by the push block 805, so that the two second cleaning rods 806 move closer to each other, and then the telescopic end of the elastic telescopic rod 803 shrinks to the limit, and the rear end of the valve core 401 fits with the front side of the first cleaning rod 804. At the same time, the two second cleaning rods 806 fit with the two ends of the first cleaning rod 804 respectively.And the latches of the two second cleaning rods 806 are respectively inserted into the two plug-in grooves of the first cleaning rod 804. At this time, the elliptical block 701 continues to squeeze the front end of the valve core 401, and the valve core 401 pushes the sliding plate 802 through the elastic telescopic rod 803. The sliding plate 802 is forced to slide horizontally to the rear side in the second sleeve 801, and the fifth elastic member is forced to shrink. At the same time, the guide block 901 slides along the guide groove of the second sleeve 801 and drives the first cleaning rod 804 to rotate through the elastic telescopic rod 803. The two plug-in grooves of the first cleaning rod 804 squeeze the outer walls of the latches of the two second cleaning rods 806, so that the two second cleaning rods 806 rotate synchronously with the first cleaning rod 804. When the oil drain valve is in a closed state, impurities in the lubricating oil are easily accumulated at the rear end of the valve core 401. When the oil drain valve is opened, too many impurities at the rear end of the valve core 401 will cause the inner wall of the valve body 1 to contact the valve body 1. The permeability between the valve core 401 decreases, and the old oil cannot be discharged quickly. By rotating the first cleaning rod 804, the impurities at the rear end of the valve core 401 can be scraped off, thereby improving the permeability between the valve body 1 and the valve core 401. When the two second cleaning rods 806 rotate, the conical surface and edge of the valve core 401 can be cleaned to prevent the cleaned impurities from flowing to the conical surface and edge of the valve core 401 and stagnating, thereby further improving the permeability between the valve body 1 and the valve core 401, and greatly improving the discharge efficiency of the old oil. At this time, the old oil begins to be discharged. During the discharge of the old oil, the second airbag 601 keeps in contact with the inner wall of the second special-shaped groove, and the old oil does not contact the sealing ring 402, thereby preventing the sealing ring 402 from contacting the old oil, causing the sealing ring 402 to be affected by high temperature or corroded by chemicals, thereby greatly improving the service life of the sealing ring 402.

[0031] After the old oil is discharged, the oil drain valve is closed, and the second valve stem 207 drives the first extrusion block 405, the extrusion rod 501 and the second extrusion block 702 to rotate clockwise. At this time, the telescopic end of the elastic telescopic rod 803 continuously applies thrust to the valve core 401, so that the valve core 401 continuously squeezes the elliptical block 701, and the elliptical block 701 is squeezed and rotates synchronously with the second extrusion block 702. As the elliptical block 701 rotates, the squeezing force of the elliptical block 701 on the valve core 401 gradually decreases, and the fifth elastic member is gradually released, and pushes the elastic telescopic rod 803 through the sliding disk 802. The telescopic end of the elastic telescopic rod 803 drives the valve core 401 to move, and the elastic telescopic rod 803 The fixed end of 03 drives the first cleaning rod 804 and the guide block 901 to move forward, and the guide block 901 drives the elastic telescopic rod 803 to rotate in the opposite direction under the action of the guide groove of the second sleeve 801, thereby causing the first cleaning rod 804 and the second cleaning rod 806 to rotate in the opposite direction, so as to clean the outer wall of the valve core 401 again to prevent the old oil from remaining on the outer wall of the valve core 401, resulting in reduced sealing performance of the valve core 401 after resetting, until the fifth elastic member is completely released, the first cleaning rod 804 no longer moves, the front ends of the two second cleaning rods 806 are against the inner wall of the valve body 1, and the telescopic end of the elastic telescopic rod 803 is released, extended and reset, and drives the valve core 401 to move. The valve core 401 squeezes the outer walls of the two second cleaning rods 806, and the two second cleaning rods 806 are forced to slide away from each other and squeeze the adjacent push blocks 805 respectively. The sixth elastic member is forced to shrink, and the latches of the two second cleaning rods 806 are respectively disengaged from the two plug-in slots of the first cleaning rod 804 until the telescopic end of the elastic telescopic rod 803 is completely released, thereby resetting the two push blocks 805 and the two second cleaning rods 806, and the second valve stem 207 continues to drive the first extrusion block 405, the extrusion rod 501 and the second extrusion block 702 to continue rotating, and the first extrusion block 405 rotates to reset, and the extrusion rod 501 is in contact with the L during the rotation process. The inclined surface of the L-shaped plate 502 contacts and squeezes, and the L-shaped plate 502 is forced to lift up and slide and disengage from the annular groove of the sliding shaft 404. The sliding shaft 404 can move after being freed from the restriction, and the fourth elastic member is released and drives the sealing ring 402 and the sliding shaft 404 to slide and reset through the vertical plate 403. During the sliding and resetting process of the sealing ring 402, the gap between the sealing ring 402 and the second special-shaped groove of the valve core 401 increases, and the air in the second airbag 601 is discharged into the second special-shaped groove through the through hole of the vertical plate 403, and shrinks and resets until the sealing ring 402 is completely reset, and the sealing ring 402 fits against the inner wall of the valve body 1, thereby completing the opening and closing of the oil drain valve.

[0032] Example 2 like Fig. 9 and Fig.10As shown, a cooling mechanism is also included, the cooling mechanism includes a liquid storage box 1001, the liquid storage box 1001 is fixedly connected to the rear side of the top of the outer wall of the valve body 1, the liquid storage box 1001 is filled with a low boiling point liquid, the outer wall of the liquid storage box 1001 is connected to a guide tube 1002, the guide tube 1002 is fixedly connected to a guide cover, the guide cover is rotatably connected to an impeller 1003, one end of the wheel shaft of the impeller 1003 passes through the guide cover and the guide tube 1002 and is connected to a first The transmission assembly, the first transmission assembly is composed of a gear and a gear ring, wherein the gear is fixedly connected to one end of the axle of the impeller 1003, the outer wall of the valve body 1 is provided with an air guide groove, the gear ring of the first transmission assembly is rotatably connected to the inner wall of the air guide groove and meshes with the gear, a circular ring 1004 is rotatably connected in the air guide groove, the circular ring 1004 is fixedly connected to the gear ring of the first transmission assembly, and a plurality of evenly distributed air guide plates 1005 are fixedly connected to the outer wall of the circular ring 1004.

[0033] like Fig. 9 and Fig.10 As shown, the cooling mechanism also includes an air guide frame 1101, the outer wall of the guide tube 1002 is rotatably connected to the air guide frame 1101, the other end of the wheel shaft of the impeller 1003 rotates to penetrate the guide cover of the guide tube 1002 and the guide tube 1002 and is connected to the second transmission assembly, the second transmission assembly is composed of a first conical wheel and a second conical wheel, wherein the first conical wheel is fixedly connected to the other end of the wheel shaft of the impeller 1003, the second conical wheel is rotatably sleeved on the outer wall of the guide tube 1002, fits with the outer wall of the first conical wheel, and is fixedly connected to the top of the air guide frame 1101.

[0034] Since the working temperature of the steam turbine is extremely high, the sealing strip at the connection between the oil drain valve and the steam turbine lubrication system is affected by the high temperature, which may cause the sealing strip to deform, and lubricating oil is easily leaked between the oil drain valve and the steam turbine lubrication system. The present invention can effectively solve the above problems, specifically: When the temperature at the connection between the oil drain valve and the steam turbine lubrication system rises, the liquid in the liquid storage box 1001 begins to boil due to the high temperature and generates steam. The steam enters the guide tube 1002 through the top of the liquid storage box 1001 and impacts the impeller 1003. The impeller 1003 is impacted by the steam and drives the gear in the first transmission assembly to rotate, and drives the first conical wheel in the second transmission assembly to rotate. The gear in the first transmission assembly drives the ring 1004 to rotate through the gear ring, and the ring 1004 drives a number of air guide plates 1005 thereon to rotate. Through the rotation of the several air guide plates 1005, external air can enter the air guide groove of the valve body 1, and then be discharged to the sealing strip at the connection between the oil drain valve and the steam turbine lubrication system, thereby increasing the air flow speed at the sealing strip and cooling the sealing strip, thereby effectively reducing the temperature of the sealing strip and improving the use of the sealing strip. The life of the steam is improved. At the same time, the first conical wheel in the second transmission assembly drives the air guide frame 1101 to rotate by friction with the second conical wheel. When the steam enters the guide tube 1002, the steam flows along the inner wall of the guide tube 1002 and flows back to the liquid storage box 1001. At this time, the air guide frame 1101 rotates, so that the air at the outer wall of the guide tube 1002 covered by the air guide frame 1101 can flow quickly. By making the air flow quickly, the heat exchange efficiency between the outer wall of the guide tube 1002 and the external air can be accelerated, and the temperature of the guide tube 1002 can be reduced. After the steam passes through the guide tube 1002, the steam in the guide tube 1002 can be quickly condensed, so that the steam-liquid ratio of the liquid storage box 1001 and the guide tube 1002 remains stable, and the excessive pressure inside the liquid storage box 1001 and the guide tube 1002 is prevented from being damaged, thereby improving the efficiency of steam generation.

[0035] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.

Claims

1. An ellipsoid-driven oil drain valve with a locking function, comprising a valve body (1), characterized in that: It further includes a locking mechanism, the locking mechanism includes a first sleeve (201), the first sleeve (201) is fixedly connected to the valve body (1), a first valve rod (202) is movably connected inside the first sleeve (201), a first elastic member is arranged between the first valve rod (202) and the first sleeve (201), a connecting frame (203) is fixedly connected inside the first sleeve (201), a first airbag (204) is installed at the bottom of the connecting frame (203), a first special-shaped groove is formed in a penetrating manner inside the first sleeve (201), a sliding plate (205) and a limit pin (206) are slidably connected inside the first special-shaped groove, one end of the limit pin (206) is fixedly connected to the sliding plate (205), a second elastic member is arranged between the sliding plate (205) and the first special-shaped groove, a second valve rod (207) is rotatably connected inside the valve body (1), a limit groove for cooperating with the limit pin (206) is formed on the outer wall of the second valve rod (207), and an extension shaft (208) is fixedly connected between the first valve rod (202) and the second valve rod (207), and a protection mechanism is arranged inside the valve body (1).

2. The ellipsoid-driven oil drain valve with locking function according to claim 1, characterized in that: The locking mechanism further includes a U-shaped frame (301), the U-shaped frame (301) is fixedly connected to the top end of the first sleeve (201), a limit plate (302) is slidably connected inside the U-shaped frame (301), a groove is formed on one side of the limit plate (302), a clamping groove for cooperating with the limit plate (302) is formed on the outer wall of the first valve rod (202), a third elastic member is arranged between the limit plate (302) and the U-shaped frame (301), a pull rod (303) is slidably connected in a penetrating manner on the U-shaped frame (301), and the pull rod (303) is fixedly connected to the limit plate (302).

3. The ellipsoid-driven oil drain valve with locking function according to claim 1, characterized in that: The protection mechanism includes a valve core (401), the valve core (401) is arranged inside the valve body (1), a second special-shaped groove is formed inside the valve core (401), a sealing ring (402), a vertical plate (403) and a sliding shaft (404) are slidably connected inside the second special-shaped groove, a fourth elastic member is arranged between the vertical plate (403) and the second special-shaped groove, the sealing ring (402) is fixedly connected to one side of the vertical plate (403), the sliding shaft (404) is fixedly connected to one side of the vertical plate (403), and a first extrusion block (405) for cooperating with the sliding shaft (404) is fixedly connected to the outer wall of the second valve rod (207).

4. The ellipsoid-driven oil drain valve with locking function according to claim 3, characterized in that: The protection mechanism also includes an extrusion rod (501), the extrusion rod (501) is fixedly connected to the outer wall of the second valve stem (207), an L-shaped plate (502) used in conjunction with the extrusion rod (501) is slidably connected in the second special-shaped groove of the valve core (401), an annular groove used in conjunction with the L-shaped plate (502) is formed on the outer wall of the sliding shaft (404), a mounting groove connected to the second special-shaped groove is formed in the valve core (401), a through hole connected to the second special-shaped groove and the mounting groove is formed on the vertical plate (403), and a second airbag (601) is installed in the mounting groove.

5. The ellipsoid-driven oil drain valve with locking function according to claim 4, characterized in that: The protection mechanism also includes an elliptical block (701), the outer wall of the second valve stem (207) is rotatably connected to the elliptical block (701), the inner wall of the elliptical block (701) is provided with a fan-shaped groove, the outer wall of the second valve stem (207) is fixedly connected to a second extrusion block (702), and the second extrusion block (702) is inserted into the fan-shaped groove of the elliptical block (701) and slides therein.

6. The ellipsoid-driven oil drain valve with locking function according to claim 3, characterized in that: The valve body (401) further comprises a cleaning mechanism, the cleaning mechanism comprising a second sleeve (801), the second sleeve (801) being fixedly connected to the valve body (1) via a mounting plate, a sliding disc (802) being slidably connected to the second sleeve (801), a fifth elastic member being arranged between the sliding disc (802) and the inner wall of the second sleeve (801), a front end of the sliding disc (802) being rotatably connected to an elastic telescopic rod (803), a telescopic end of the elastic telescopic rod (803) being rotatably connected to the valve core (401), and a first cleaning rod (804) being fixedly connected to the outer wall of the fixed end of the elastic telescopic rod (803).

7. The ellipsoid-driven oil drain valve with locking function according to claim 6, characterized in that: The cleaning mechanism also includes a push block (805), the push block (805) and the second cleaning rod (806) are symmetrically slidably connected in the valve body (1), a sixth elastic member is arranged between the push block (805) and the inner wall of the valve body (1), both ends of the first cleaning rod (804) are provided with a plug-in groove, and the outer wall of the second cleaning rod (806) is fixedly connected with a pin used in conjunction with the plug-in groove.

8. The ellipsoid-driven oil drain valve with locking function according to claim 7, characterized in that: The cleaning mechanism further comprises a guide block (901), the outer wall of the fixed end of the elastic telescopic rod (803) being fixedly connected to the guide block (901), the inner wall of the second sleeve (801) being provided with a guide groove, the guide block (901) being inserted into the guide groove and sliding therein.

9. The ellipsoid-driven oil drain valve with locking function according to claim 7, characterized in that: The valve body (1) further comprises a cooling mechanism, wherein the cooling mechanism comprises a liquid storage box (1001), the outer wall of the valve body (1) being fixedly connected to the liquid storage box (1001), the outer wall of the liquid storage box (1001) being connected to a flow guide tube (1002), a flow guide cover being fixedly connected inside the flow guide tube (1002), an impeller (1003) being rotatably connected inside the flow guide cover, one end of the wheel shaft of the impeller (1003) passing through the flow guide cover and the flow guide tube (1002) and being connected to a first transmission component, an air guide groove being through-opened on the outer wall of the valve body (1), the first transmission component being connected to the inner wall of the air guide groove, a circular ring (1004) being rotatably connected inside the air guide groove, the first transmission component being connected to the circular ring (1004), and a plurality of evenly distributed air guide plates (1005) being fixedly connected to the outer wall of the circular ring (1004).

10. The ellipsoid-driven oil drain valve with locking function according to claim 9, characterized in that: The cooling mechanism further comprises an air guide frame (1101), the outer wall of the air guide pipe (1002) is rotatably connected to the air guide frame (1101), the other end of the wheel shaft of the impeller (1003) rotatably passes through the air guide cover of the air guide pipe (1002) and the air guide pipe (1002) and is connected to a second transmission assembly, and the second transmission assembly is connected to the air guide frame (1101).

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