Anti-oil-theft oil drain valve and application thereof in oil delivery

Abstract

The invention relates to the technical field of oil drain valves, in particular to an oil theft prevention type oil drain valve and application thereof in oil product conveying, the oil theft prevention type oil drain valve comprises a lower valve body, an upper valve body and a conveying pipe, the upper valve body and the conveying pipe are fixed to the upper end and the lower end of the lower valve body, and a fixing plate is fixed to the inner wall of the conveying pipe; the sliding rod is installed on the fixing plate in a sliding mode, and a sealing disc is fixed to the end of the sliding rod; the pressurizing pushing mechanism is arranged on the fixing plate, a rotating sleeve is connected to the pressurizing pushing mechanism, a triggering rotating mechanism is further arranged on the fixing plate, and the pressurizing pushing mechanism can drive the rotating sleeve to rotate through the triggering rotating mechanism when the pressure intensity in the conveying pipe is increased; and the rotating ring is rotationally installed in the upper valve body and connected with the pressurization pushing mechanism, a multi-stage locking mechanism is arranged on the rotating ring, and the multi-stage locking mechanism can be controlled to lock the position of the sealing disc through the change of the pressure intensity in the conveying pipe, so that the anti-theft effect on the oil drain valve is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil drain valves, in particular to an oil theft prevention type oil drain valve and application thereof in oil product transportation. BACKGROUND

[0002] The oil drain valve, also known as API valve, is installed in the toolbox at the bottom of the oil tank truck, is usually connected with the bottom valve through a pipeline, and is used in combination, the 8-M10 bolt at the inlet is fastened with the flange of the pipeline, and is mainly used for gasoline and diesel oil transportation.

[0003] The oil theft prevention type oil drain valve combines the oil drain function and the oil theft prevention function, is mainly used for preventing oil from being illegally stolen, and can safely drain oil when necessary, and therefore, the oil theft prevention type oil drain valve is a device integrating safety, reliability and convenience.

[0004] The existing oil theft prevention type oil drain valve usually realizes the oil theft prevention effect through a physical structure theft prevention design, a special tool is needed to open the oil drain valve in the oil drain process, however, this way can only provide a single external theft prevention effect, and the unlocking tool is always in an effective unlocking state regardless of the transportation or oil drain state, and if the oil thief prepares a simulated tool, the oil drain valve can be opened, and the oil theft prevention effect is invalid. SUMMARY

[0005] The present application relates to the technical field of oil drain valves, in particular to an oil theft prevention type oil drain valve and application thereof in oil product transportation.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: An oil theft prevention type oil drain valve, comprising: A lower valve body, an upper valve body fixed on the upper end of the lower valve body, and a conveying pipe fixed on the lower end of the lower valve body, and a fixed plate fixed on the inner wall of the conveying pipe; Further comprising: A sliding rod slidingly installed on the fixed plate, and a sealing disc fixed on the end of the sliding rod; A pressure boosting pushing mechanism arranged on the fixed plate, a rotating sleeve connected to the pressure boosting pushing mechanism, and a trigger rotating mechanism arranged on the fixed plate, the pressure boosting pushing mechanism being capable of driving the rotating sleeve to rotate through the trigger rotating mechanism when the pressure in the conveying pipe increases, and adjusting the conduction state of the conveying pipe; A rotating ring rotatably installed in the upper valve body and connected with the pressure boosting pushing mechanism, and a multi-stage locking mechanism arranged on the rotating ring, the multi-stage locking mechanism being capable of controlling the axial sliding of the sliding rod when the rotating ring rotates, so as to adjust the conduction state of the upper valve body through the sealing disc.

[0007] As a further scheme of the present application, the pressure boosting mechanism comprises a conducting disc and a pushing disc sliding along the rotating sleeve in the axial direction, and the conducting disc and the pushing disc are respectively provided with a first conducting hole and a second conducting hole which are in conducting cooperation with each other. The application further comprises a guide assembly arranged on the conducting disc and the pushing disc, which is used for limiting the rotation of the conducting disc and controlling the rotation of the pushing disc.

[0008] As a further scheme of the present application, the guide assembly comprises a first follower and a second follower fixed on both sides of the pushing disc, the second follower penetrates through the rotating ring, the rotating sleeve is fixed with a connecting plate in sliding connection with the first follower, and the conducting disc is fixed with a guide column penetrating through the fixed plate.

[0009] As a further scheme of the present application, the trigger rotating mechanism comprises a guide groove and a spiral groove opened in the circumferential outer wall of the rotating sleeve, the inner wall of the conducting disc is fixed with a first limiting block in sliding fitting with the guide groove, and the rotating sleeve is slidingly installed with a movable ring sliding along the guide column in the axial direction, the inner wall of the movable ring is fixed with a second limiting block in sliding fitting with the spiral groove.

[0010] As a further scheme of the present application, the trigger rotating mechanism further comprises a first spring and a second spring sleeved on the rotating sleeve, the two ends of the first spring are respectively in abutment with the conducting disc and the movable ring, and the two ends of the second spring are respectively in abutment with the movable ring and the fixed plate.

[0011] As a further scheme of the present application, the guide groove comprises a first vertical groove, a first annular groove, a second vertical groove and a second annular groove formed in the circumferential outer wall of the rotating sleeve, and the first vertical groove, the first annular groove, the second vertical groove and the second annular groove are sequentially connected with each other in the head-tail direction.

[0012] As a further scheme of the present application, the multi-stage locking mechanism comprises a limiting wheel fixed on the sliding rod, a handle rotatingly installed on the outer wall of the upper valve body, and a cam fixed on the handle in abutment with the limiting wheel, and the rotating ring is provided with a limiting assembly.

[0013] As a further scheme of the present application, the limiting assembly comprises a limiting ring fixed on the rotating ring, and the limiting ring is formed with a limiting groove and a circular arc inclined groove.

[0014] As a further scheme of the present application, the limiting assembly further comprises a fixed ring fixed on the sliding rod and in abutment with the limiting ring, the fixed ring is in sliding cooperation with the limiting groove and the circular arc inclined groove, and the sliding rod is sleeved with a third spring, and the two ends of the third spring are respectively in abutment with the fixed ring and the sealing disc.

[0015] The application of the oil theft prevention type oil drain valve in oil product transportation, comprising the oil theft prevention type oil drain valve.

[0016] Compared with the prior art, the application can provide the oil drain valve with multi-stage theft prevention effect through the multi-stage locking mechanism, so as to effectively prevent oil theft, and specifically, the displacement of the sliding rod can be limited through the multi-stage locking mechanism, so as to ensure that the position of the sealing disc cannot be changed, so that the upper valve body is always in a plugging state, when oil needs to be drained, the pressure change in the conveying pipe can control the movement of the pressure boosting pushing mechanism and the movement of the trigger rotating mechanism, when the pressure in the conveying pipe reaches a set value, the rotating sleeve is rotated under the action of the trigger rotating mechanism, so as to control the conduction of the conveying pipe and the lower valve body through the pressure boosting pushing mechanism, and at the same time, the pressure boosting pushing mechanism will perform an unlocking action on the multi-stage locking mechanism through the rotating ring, so that the sealing disc is separated from the upper valve body under the action of the multi-stage locking mechanism, thereby realizing the oil draining action.

[0017] The pre-compression force provided by the first spring and the second spring can effectively prevent displacement caused by the oil pressure fluctuation when the pushing disc is not in the oil draining state, thereby ensuring the theft prevention effect of the oil drain valve, and at the same time, when the oil drain valve is in the oil draining state, the elastic potential energy change of the first spring and the second spring can realize that when the oil pressure in the conveying pipe reaches a set value, the rotating sleeve can quickly rotate to a specified angle, and the second conduction hole and the first conduction hole are conducted through the pushing disc, which can not only automatically control the conduction of the conveying pipe and the lower valve body in the oil draining state, but also perform an unlocking action on the multi-stage locking mechanism, so as to facilitate subsequent normal oil draining action.

[0018] Through the cooperation of the guide groove and the first limiting block and the spiral groove and the second limiting block, oil draining treatment is only performed when the oil pressure reaches a set value, and after oil draining is completed, the conveying pipe is also blocked when the oil pressure returns to the oil pressure before oil draining, which can not only ensure that the oil is quickly and smoothly discharged, but also ensure that the oil is completely discharged, so as to prevent the problem that the conveying pipe is blocked when the oil pressure in the conveying pipe is in a high state, which causes the inner wall of the conveying pipe to bear excessive pressure and further causes the conveying pipe to be damaged or the service life to be reduced.

[0019] Through the multi-stage locking mechanism, the handle cannot control the movement of the sealing disc before oil draining, so as to ensure that the oil drain valve cannot be stolen, and after oil draining is completed, the handle can control the reset of the fixed ring, and after the fixed ring is reset, the position of the fixed ring is locked again through the multi-stage locking mechanism, so that the multi-stage locking mechanism realizes the effect of providing the oil drain valve with multi-stage theft prevention through double locking. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1Structure diagram of an embodiment of the anti-theft oil drain valve.

[0021] Figure 2 Structure diagram of the inside of the upper valve body in an embodiment of the anti-theft oil drain valve.

[0022] Figure 3 Structure diagram of the inside of the delivery pipe in an embodiment of the anti-theft oil drain valve.

[0023] Figure 4 Structure diagram of the semi-section of the upper valve body, the lower valve body, and the delivery pipe in an embodiment of the anti-theft oil drain valve.

[0024] Figure 5 Structure diagram of Figure 4 Structure diagram of the enlarged view of A in the above figure.

[0025] Figure 6 Structure diagram of the inside of the upper valve body, the lower valve body, and the delivery pipe in an embodiment of the anti-theft oil drain valve.

[0026] Figure 7 Structure diagram of the connection relationship between the pressure boosting pushing mechanism and the trigger rotating mechanism in an embodiment of the anti-theft oil drain valve.

[0027] Figure 8 Structure diagram of the explosion of the pressure boosting pushing mechanism and the trigger rotating mechanism in an embodiment of the anti-theft oil drain valve.

[0028] Figure 9 Structure diagram of part of the multi-stage locking mechanism, the sliding rod, and the sealing disc in an embodiment of the anti-theft oil drain valve.

[0029] Figure 10 Structure diagram of the explosion of part of the multi-stage locking mechanism in an embodiment of the anti-theft oil drain valve.

[0030] Figure 11 Structure diagram of the rotating ring and the limiting ring in an embodiment of the anti-theft oil drain valve.

[0031] Figure 12 Structure diagram of the cross-section of the rotating ring and the limiting ring in an embodiment of the anti-theft oil drain valve.

[0032] In the figure: 1, lower valve body; 2, upper valve body; 3, delivery pipe; 4, fixed plate; 401, guide block; 5, sliding rod; 501, clamping groove; 6, sealing disc; 7, limiting wheel; 8, handle; 9, cam; 10, rotating sleeve; 1001, first vertical groove; 1002, first annular groove; 1003, second vertical groove; 1004, second annular groove; 1005, helical groove; 11, conducting disc; 1101, first limiting block; 12, first conducting hole; 13, movable ring; 1301, second limiting block; 14, guide column; 15, first spring; 16, second spring; 17, push disc; 18, second conducting hole; 19, first follower rod; 20, connecting plate; 21, rotating ring; 22, limiting ring; 2201, limiting groove; 2202, circular arc inclined groove; 23, fixed ring; 24, third spring; 25, second follower rod. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] In addition, the elements in the present application are referred to as "fixed to" or "provided on" another element, which can be directly on another element or can have a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or can have a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0035] Please refer to Figures 1-12 In the embodiments of the present application, a theft-proof oil type oil drain valve comprises: A lower valve body 1, and an upper valve body 2 and a delivery pipe 3 fixed on the upper and lower ends of the lower valve body 1, and a fixed plate 4 fixed on the inner wall of the delivery pipe 3; Further comprising: A sliding rod 5 slidingly installed on the fixed plate 4, and a sealing disc 6 fixed on the end of the sliding rod 5; A pressure boosting pushing mechanism arranged on the fixed plate 4, a rotating sleeve 10 connected to the pressure boosting pushing mechanism, and a trigger rotating mechanism arranged on the fixed plate 4, wherein the pressure boosting pushing mechanism is capable of driving the rotating sleeve 10 to rotate through the trigger rotating mechanism when the pressure in the delivery pipe 3 increases, and adjusting the conducting state of the delivery pipe 3; A rotating ring 21 is rotatably installed in the upper valve body 2 and connected with the pressure boosting pushing mechanism, and a multi-stage locking mechanism is arranged on the rotating ring 21, which can control the axial sliding of the sliding rod 5 when the rotating ring 21 rotates, so as to adjust the open state of the upper valve body 2 through the sealing disc 6.

[0036] Specifically, the fixed plate 4 is fixed with a guide block 401 arranged in parallel with the sliding rod 5, and a clamping groove 501 is arranged on the outer wall of the sliding rod 5 and slidably matched with the guide block 401, so as to ensure that the sliding rod 5 will not rotate when moving. When the oil is not discharged, the multi-stage locking mechanism can provide multiple locking forces to the sliding rod 5, so as to perform a sealing action on the upper valve body 2 through the sealing disc 6, thereby achieving the effect of preventing the oil drain valve from being stolen. When the oil needs to be discharged, the oil can be introduced into the delivery pipe 3, so that the pressure in the delivery pipe 3 increases. Under the action of the pressure pushing force, the control pressure boosting pushing mechanism moves, thereby driving the trigger rotating mechanism to move. When the pressure in the delivery pipe 3 reaches a set value, the trigger rotating mechanism controls the rotating sleeve 10 to rotate, so as to control the delivery pipe 3 to be in communication with the lower valve body 1 through the pressure boosting pushing mechanism. At the same time, the trigger rotating mechanism also drives the rotating ring 21 to rotate, so that the multi-stage locking mechanism is no longer locked. At this time, the multi-stage locking mechanism can be controlled to move, and the sealing disc 6 can be controlled to move towards the lower valve body 1 through the sliding rod 5, so that the upper valve body 2 is in communication. At this time, the oil can be discharged through the upper valve body 2.

[0037] Preferably, by adjusting the pressure in the delivery pipe 3, the multi-stage locking mechanism can be locked when the delivery pipe 3 is in an idle state, so as to ensure the effect of preventing the oil drain valve from being stolen. When the delivery pipe 3 is in a discharging state and the pressure in the delivery pipe 3 reaches a set value, the multi-stage locking mechanism can be unlocked, so that the upper valve body 2 is in communication and performs the discharging action.

[0038] Please refer to Figures 3-8 , the pressure boosting pushing mechanism comprises a communication disc 11 and a pushing disc 17 which slide along the rotating sleeve 10, and a first communication hole 12 and a second communication hole 18 are respectively formed in the communication disc 11 and the pushing disc 17 and are in communication with each other. A guide assembly is arranged on the communication disc 11 and the pushing disc 17, which is used to limit the rotation of the communication disc 11 and control the rotation of the pushing disc 17. The guide assembly comprises a first follower rod 19 and a second follower rod 25 fixed on both sides of the pushing disc 17, the second follower rod 25 penetrates the rotating ring 21, the rotating sleeve 10 is fixed with a connecting plate 20 which is slidably connected with the first follower rod 19, and the communication disc 11 is fixed with a guide column 14 which penetrates the fixed plate 4.

[0039] Please refer to Figures 3-8The trigger rotating mechanism comprises a guide groove and a spiral groove 1005 formed in the circumferential outer wall of the rotating sleeve 10, the inner wall of the conducting disc 11 is fixed with a first limiting block 1101 which is slidably fitted with the guide groove, the rotating sleeve 10 is slidably provided with a movable ring 13 which slides along the guide column 14, the inner wall of the movable ring 13 is fixed with a second limiting block 1301 which is slidably fitted with the spiral groove 1005, the trigger rotating mechanism further comprises a first spring 15 and a second spring 16 which are sleeved on the rotating sleeve 10, the two ends of the first spring 15 are respectively abutted with the conducting disc 11 and the movable ring 13, the two ends of the second spring 16 are respectively abutted with the movable ring 13 and the fixed plate 4, the guide groove comprises a first vertical groove 1001, a first annular groove 1002, a second vertical groove 1003 and a second annular groove 1004 which are formed in the circumferential outer wall of the rotating sleeve 10, and the first vertical groove 1001, the first annular groove 1002, the second vertical groove 1003 and the second annular groove 1004 are sequentially connected with each other.

[0040] In detail, the two ends of the delivery pipe 3 are respectively connected with the lower valve body 1 and the cut-off valve through flanges, and the oil can enter the delivery pipe 3 through the cut-off valve, please refer to Figures 6-8 When the oil is not discharged, the oil pressure in the delivery pipe 3 is small, the first spring 15 and the second spring 16 are in a compressed state, and the elastic potential energy of the second spring 16 is greater than that of the first spring 15, therefore, the movable ring 13 has a tendency to move towards the conducting disc 11, under the action of the first spring 15, the conducting disc 11 and the push disc 17 are located at the end of the stroke away from the fixed plate 4, and the supporting force provided by the first spring 15 on the conducting disc 11 is greater than the force provided by the oil pressure on the push disc 17, at this time, under the action of the movable ring 13, the second limiting block 1301 is located at the end of the stroke away from the fixed plate 4 on the spiral groove 1005, and under the action of the conducting disc 11, the first limiting block 1101 is located at the connected position of the first vertical groove 1001 and the second annular groove 1004.

[0041] Please refer to Figure 4 , Figure 8In this case, the first through hole 12 and the second through hole 18 are in a misaligned state to control the delivery pipe 3 and the lower valve body 1 to be in an isolated state by the pushing disc 17, and under the action of the guide column 14, the through disc 11 can only slide axially along the guide column 14 and cannot rotate, and under the action of the first follower rod 19 and the connecting plate 20, the pushing disc 17 can slide axially along the rotating sleeve 10 while following the rotation of the rotating sleeve 10, and thus under the action of the second spring 16, the position of the movable ring 13 cannot be changed to limit the rotation of the rotating sleeve 10 by the second limiting block 1301 and the spiral groove 1005, thereby ensuring that the pushing disc 17 cannot rotate to ensure that the delivery pipe 3 is always in a sealed state during oil delivery. Since the pushing disc 17 cannot rotate, the rotating ring 21 can be controlled to remain in a fixed state by the second follower rod 25 to ensure that the multi-stage locking mechanism is always in a locked state and cannot be controlled to move the sealing disc 6 by external means, thereby achieving the effect of theft prevention.

[0042] When it is necessary to perform oil discharge treatment on the oil, the shut-off valve can be opened and pressurization is performed in the oil tank, so that the oil pressure in the delivery pipe 3 increases, and when the force provided by the oil pressure to the pushing disc 17 exceeds the support force provided by the first spring 15 and the second spring 16, the pushing disc 17 will move axially along the rotating sleeve 10 and move towards the fixed plate 4, thereby driving the through disc 11 to move synchronously along the axial direction of the guide column 14, so that the first spring 15 is compressed, and the through disc 11 also drives the first limiting block 1101 to enter the first vertical slot 1001, and as the first spring 15 is gradually compressed, the elastic potential energy of the first spring 15 will exceed the elastic potential energy of the second spring 16, so that the movable ring 13 has a tendency to move towards the fixed plate 4, however, since the through disc 11 does not rotate, the rotating sleeve 10 can be controlled to remain in a fixed state under the action of the first limiting block 1101 and the first vertical slot 1001, and only when the rotating sleeve 10 rotates, the movable ring 13 can slide along the guide column 14 under the action of the spiral groove 1005 and the second limiting block 1301, so that the movable ring 13 will always remain in a fixed state; Subsequently, when the pressure in the delivery pipe 3 reaches the set value, the first limit block 1101 just moves to the connected position of the first vertical groove 1001 and the first annular groove 1002, at this time, the rotating sleeve 10 is no longer locked, under the action of the first spring 15, the movable ring 13 slides along the guide column 14 in the axial direction and moves towards the fixed plate 4, thereby compressing the second spring 16, at the same time, the movable ring 13 also drives the second limit block 1301 to slide along the spiral groove 1005, so that the rotating sleeve 10 rotates, so that the first limit block 1101 slides along the first annular groove 1002 relative to the rotating sleeve 10, when the first limit block 1101 moves to the connected position of the first annular groove 1002 and the second vertical groove 1003, the rotating angle of the rotating sleeve 10 reaches the maximum, at this time, the elastic potential energy of the first spring 15 is still greater than that of the second spring 16; When the rotating sleeve 10 rotates, it also drives the connecting plate 20 to move synchronously, thereby controlling the push plate 17 to rotate synchronously with the rotating sleeve 10 through the first follower rod 19, the push plate 17 will drive the second guide hole 18 to move to the position of the first guide hole 12, so that the delivery pipe 3 and the lower valve body 1 are connected, the oil in the delivery pipe 3 will enter the lower valve body 1 through the second guide hole 18 and the first guide hole 12, the push plate 17 will also control the rotating ring 21 to move through the second follower rod 25, so as to execute the unlocking action of the multi-stage locking mechanism, so as to facilitate the normal oil discharge action of the subsequent multi-stage locking mechanism.

[0043] Preferably, the oil in the delivery pipe 3 will inevitably fluctuate due to jolting and shaking during transportation, and the pre-compression force provided by the first spring 15 and the second spring 16 can effectively prevent displacement caused by the oil pressure fluctuation when the push plate 17 is not in the oil discharge state, thereby ensuring the anti-theft effect of the oil drain valve, and at the same time, when the oil drain valve is in the oil discharge state, the change of the elastic potential energy of the first spring 15 and the second spring 16 can realize that when the oil pressure in the delivery pipe 3 reaches the set value, the rotating sleeve 10 can quickly rotate to the specified angle, and the second guide hole 18 and the first guide hole 12 are connected through the push plate 17, which can not only automatically control the connection between the delivery pipe 3 and the lower valve body 1 in the oil discharge state, but also execute the unlocking action of the multi-stage locking mechanism, so as to facilitate the subsequent normal oil discharge action.

[0044] With the continuous oil leakage, the oil pressure provided to the push disc 17 will gradually be less than the support force provided by the first spring 15 and the second spring 16, under the action of the first spring 15, the control disc 11 and the push disc 17 move towards the initial position, so that the first limiting block 1101 enters the second vertical groove 1003, under the action of the first limiting block 1101 and the second vertical groove 1003, the rotating sleeve 10 can also be limited to rotate, so that the position of the movable ring 13 will not change, with the gradual release of the elastic potential energy of the first spring 15, the elastic potential energy of the first spring 15 will gradually be less than the elastic potential energy of the second spring 16, under the action of the second spring 16, the movable ring 13 has a tendency to move towards the control disc 11, when the oil leakage is completed, the control disc 11 and the push disc 17 return to the initial position, the first limiting block 1101 moves to the connecting position of the second vertical groove 1003 and the second annular groove 1004, the rotating sleeve 10 is no longer limited, the second spring 16 is elastically released, and the movable ring 13 is quickly controlled to move towards the control disc 11, to control the second limiting block 1301 to slide along the spiral groove 1005, so that the rotating sleeve 10 rotates towards the initial angle, to control the push disc 17 to rotate, when the first limiting block 1101 moves to the connecting position of the first vertical groove 1001 and the first annular groove 1002, it means that the rotating angle of the push disc 17 and the rotating sleeve 10 is at the initial value, at this time, the second through hole 18 is separated from the first through hole 12 again, and the delivery pipe 3 and the lower valve body 1 are in the isolated state again.

[0045] Preferably, through the cooperation of the guide groove and the first limiting block 1101 and the spiral groove 1005 and the second limiting block 1301, when the oil pressure reaches the set value, the oil leakage treatment is carried out, and after the oil leakage is completed, the delivery pipe 3 can be blocked when the oil pressure returns to the oil pressure before the oil leakage, which can ensure that the oil is quickly and smoothly discharged, and can ensure that the oil is completely discharged, so as to prevent the problem that the inner wall of the delivery pipe 3 bears too much pressure when the oil pressure in the delivery pipe 3 is in a high state, and then the delivery pipe 3 is damaged or the service life is reduced.

[0046] Please refer to Figures 1-4 、 Figure 6 、 Figures 9-12The multi-stage locking mechanism comprises a limiting wheel 7 fixed on the sliding rod 5, a handle 8 rotatably installed on the outer wall of the upper valve body 2, a cam 9 fixed on the handle 8 and abutting against the limiting wheel 7, a limiting assembly arranged on the rotating ring 21, the limiting assembly comprising a limiting ring 22 fixed on the rotating ring 21, a limiting groove 2201 and a circular arc inclined groove 2202 formed in the limiting ring 22, a fixed ring 23 fixed on the sliding rod 5 and abutting against the limiting ring 22, the fixed ring 23 being in sliding fit with the limiting groove 2201 and the circular arc inclined groove 2202, and a third spring 24 sleeved on the sliding rod 5 and abutting against the fixed ring 23 and the sealing disc 6.

[0047] It should be noted that the circular arc inclined groove 2202 is arranged in the circumferential direction of the limiting ring 22 and is arranged in an inclined manner in the interior of the circular arc groove, and the circular arc inclined groove 2202 is connected with the limiting groove 2201. During the oil delivery process, the oil pressure in the delivery pipe 3 is small, the pushing disc 17 does not rotate, the rotating ring 21 is limited from rotating under the action of the second follower rod 25, the fixed ring 23 is in a misaligned state with the limiting groove 2201, the third spring 24 is in a compressed state, the fixed ring 23 is in abutment with the limiting ring 22, the position of the fixed ring 23 is locked under the action of the limiting ring 22, the position of the sealing disc 6 is ensured from being changed, and the upper valve body 2 is always blocked, and the position of the sliding rod 5 is further locked by the handle 8, the cam 9 and the limiting wheel 7.

[0048] When oil needs to be discharged, the handle 8 can be held and the cam 9 is driven to rotate, so that the cam 9 is separated from the limiting wheel 7, and when the pressure in the delivery pipe 3 is increased to a set value, the pushing disc 17 will slide axially along the rotating sleeve 10 while rotating with the rotating sleeve 10 by a certain angle to drive the rotating ring 21 to rotate through the second follower rod 25, the rotating ring 21 drives the limiting groove 2201 to move to the position matched with the fixed ring 23, at this time, the third spring 24 is elastically released, so that the fixed ring 23 can smoothly pass through the limiting groove 2201 and completely penetrate the circular arc inclined groove 2202, the fixed ring 23 also drives the sliding rod 5 to move, thereby driving the sealing disc 6 and the limiting wheel 7 to move towards the fixed plate 4, so that the upper valve body 2 is conducted, and when the limiting wheel 7 moves to the position abutting against the cam 9, it indicates that the conduction area of the upper valve body 2 reaches the maximum.

[0049] Subsequently, when the oil is discharged, the oil pressure in the delivery pipe 3 returns to the initial value, and under the cooperation of the pressure boosting pushing mechanism and the trigger rotating mechanism, the rotating sleeve 10 returns to the initial angle, so that the rotating ring 21 is driven by the pushing disc 17 and the second follower rod 25 to return to the initial angle, and the limiting groove 2201 is again out of position with the fixed ring 23, while the circular arc inclined groove 2202 is still in the cooperating position with the fixed ring 23. At this time, the cam 9 can be rotated by the handle 8 to control the sliding rod 5 to move away from the fixed plate 4 by the limiting wheel 7, and the sliding rod 5 also drives the fixed ring 23 and the sealing disc 6 to move. When the fixed ring 23 enters the circular arc inclined groove 2202, the fixed ring 23 slides along the circular arc inclined surface of the circular arc inclined groove 2202, so that the limiting ring 22 rotates to control the rotating ring 21 and the second follower rod 25 to rotate the pushing disc 17 to control the rotating sleeve 10 to rotate. The first limiting block 1101 slides along the second annular groove 1004 relative to the rotating sleeve 10, and the rotating sleeve 10 rotates to control the movement of the movable ring 13 through the second limiting block 1301 and the spiral groove 1005, and compresses the second spring 16. Therefore, the vertical support force provided by the handle 8 only needs to overcome the resistance provided by the second spring 16 to realize the penetration of the fixed ring 23 through the circular arc inclined groove 2202. When the fixed ring 23 penetrates the circular arc inclined groove 2202 and the limiting groove 2201, the sealing disc 6 again seals the upper valve body 2, the limiting ring 22 is no longer subjected to the rotating force, the second spring 16 is elastically released, and the rotating sleeve 10 is reset to control the rotating ring 21 to rotate to the initial angle through the second limiting block 1301 and the spiral groove 1005. At this time, the fixed ring 23 is again out of position with the limiting groove 2201, thereby again locking the fixed ring 23.

[0050] Preferably, through the multi-stage locking mechanism, it can be realized that before the oil is discharged, no matter how the handle 8 moves, it cannot control the movement of the sealing disc 6, so as to ensure that the oil discharge valve cannot be stolen. After the oil is discharged, the handle 8 can control the fixed ring 23 to reset, and after the fixed ring 23 is reset, the position of the fixed ring 23 is locked again through the multi-stage locking mechanism. In summary, through the double locking of the multi-stage locking mechanism, the multi-stage anti-theft effect of the oil discharge valve is realized.

[0051] An application of the anti-theft oil discharge valve in oil delivery includes the anti-theft oil discharge valve.

[0052] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0053] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A theft deterrent oil drain valve comprising: The lower valve body, and the upper valve body and the conveying pipe fixed on both ends of the lower valve body, the inner wall of the conveying pipe is fixed with a fixed plate; characterized in that, further comprising: a sliding rod, slidingly installed on the fixed plate, the end of the sliding rod is fixed with a sealing disc; a pressure boosting pushing mechanism is arranged on the fixed plate, a rotating sleeve is connected to the pressure boosting pushing mechanism, a trigger rotating mechanism is further arranged on the fixed plate, the pressure boosting pushing mechanism can drive the rotating sleeve to rotate through the trigger rotating mechanism when the pressure in the conveying pipe increases, and the conduction state of the conveying pipe is adjusted; a rotating ring is rotatably installed in the upper valve body and connected with the pressure boosting pushing mechanism, a multi-stage locking mechanism is arranged on the rotating ring, the multi-stage locking mechanism can control the axial sliding of the sliding rod when the rotating ring rotates, so as to adjust the conduction state of the upper valve body through the sealing disc.

2. A theft deterrent oil drain valve according to claim 1 wherein, The pressure boosting pushing mechanism comprises a conduction disc and a pushing disc which axially slide along the rotating sleeve, and the conduction disc and the pushing disc are respectively formed with a first conduction hole and a second conduction hole which are in conduction cooperation with each other; further comprising a guide assembly arranged on the conduction disc and the pushing disc, for limiting rotation of the conduction disc and controlling rotation of the pushing disc.

3. A theft deterrent oil drain valve according to claim 2 wherein, The guide assembly comprises a first follow-up rod and a second follow-up rod fixed on both sides of the pushing disc, the second follow-up rod penetrates through the rotating ring, the rotating sleeve is fixed with a connecting plate which is in sliding connection with the first follow-up rod, and the conduction disc is fixed with a guide column which penetrates through the fixed plate.

4. A theft deterrent oil drain valve in accordance with claim 3 wherein, The trigger rotating mechanism comprises a guide groove and a spiral groove opened in the circumferential outer wall of the rotating sleeve, the inner wall of the conduction disc is fixed with a first limiting block which is in sliding fit with the guide groove, and the rotating sleeve is slidingly installed with a movable ring which axially slides along the guide column, the inner wall of the movable ring is fixed with a second limiting block which is in sliding fit with the spiral groove.

5. A theft deterrent oil drain valve in accordance with claim 4 wherein, The trigger rotating mechanism further comprises a first spring and a second spring which are sleeved on the rotating sleeve, the two ends of the first spring are respectively in abutment with the conduction disc and the movable ring, and the two ends of the second spring are respectively in abutment with the movable ring and the fixed plate.

6. An antitheft oil drain valve according to claim 4, wherein The guide groove comprises a first vertical groove, a first annular groove, a second vertical groove and a second annular groove formed in the circumferential outer wall of the rotating sleeve, and the first vertical groove, the first annular groove, the second vertical groove and the second annular groove are sequentially connected with each other.

7. The theft-proof oil drain valve according to claim 1, wherein The multi-stage locking mechanism comprises a limiting wheel fixed on the sliding rod, a handle is rotatably installed on the outer wall of the upper valve body, the handle is fixed with a cam which is in abutment cooperation with the limiting wheel, and the rotating ring is provided with a limiting assembly.

8. An oil drain valve of the theft-proof oil drain type according to claim 7, wherein The limiting assembly comprises a limiting ring fixed on the rotating ring, and a limiting groove and a circular arc inclined groove are formed in the limiting ring.

9. An oil drain valve of the theft-proof oil drain type according to claim 8, wherein The limiting assembly further comprises a fixed ring fixed on the sliding rod and in abutment cooperation with the limiting ring, the fixed ring is in sliding cooperation with the limiting groove and the circular arc inclined groove, a third spring is sleeved on the sliding rod, and the two ends of the third spring are respectively in abutment with the fixed ring and the sealing disc.

10. The use of a theft-proof oil drain valve in oil product delivery, characterized in that, An oil drain valve of the theft-proof oil type comprising the features of any one of claims 1-9.

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