JP6860760B1 - Anti-theft valve for oil well mouth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To disclose an anti-theft valve for an oil well mouth. SOLUTION: The well lid is fixedly installed on the ground, an oil well opened upward is installed in the ground, and the well is opened downward in the lid of the well. The oil storage space is installed, the oil storage space faces the oil well, and a hole opened upward is installed in the upper inner wall of the oil storage space so as to communicate with the oil storage space. It is installed at an open oil well mouth and has a large volume, so it cannot be easily moved and is hard to break.There is only one way to open a sealed passage inside the present invention to prevent theft, and once the wrong method is used. Then, the sealed passage is closed, and at this time, oil cannot be pumped from the oil well. [Selection diagram] Fig. 1

Description

The present invention relates to the field of oil wells, and specifically is an anti-theft valve for an oil well mouth.

Petroleum is a viscous dark brown liquid that is widely used in daily life and production and is one of the main targets of geological surveys. Oil has a long production time as non-renewable energy, and the world's oil production exceeds demand, but the price of oil is still high. A common mining method is to drill a well in an oil field and pump crude oil. However, in general, when an oil well is opened, oil can be stolen. This affects society's relationship between oil supply and demand. The anti-theft valve for an oil well mouth described in the present invention can solve the above problems, and the present invention is installed in an open oil well mouth and has a large volume, so that it cannot be easily moved and is not easily broken. There is only one way to open the sealed passage inside the present invention to prevent theft, and once the wrong method is used, the sealed passage will be closed and at this time it will not be possible to pump oil from the oil well.

Chinese Patent Application Publication No. 1040889039

Technical problem:
Opened oil wells are vulnerable to theft, affecting the relationship between oil supply and demand in the market.

In order to solve the above problem, an anti-theft valve for an oil well mouth is designed, and the anti-theft valve for an oil well mouth described in the present invention includes a well lid, and the well lid is fixedly installed on the ground. An oil well opened upward is installed in the ground, an oil storage space opened downward is installed in the lid of the well, the oil storage space faces the oil well, and the oil the upper inner wall of the storage space is provided so that the vent hole opened upward communicating with the oil storage space, the upper side of the lid of the well valve body is installed rotatably, within said valve body is The connecting space opened away from the center of the valve body is installed so as to be vertically symmetrical, and the upper end of the lid of the well extends into the connecting space on the lower side and is rotatably connected to the valve body. A sealed box centered on the center of the valve body is rotatably installed on the upper side of the valve body, and the lower end of the sealed box extends into the connecting space on the upper side so as to be rotatable with the valve body. Connected, a sealed passage is installed in the valve body so as to penetrate the valve body up and down, and a lower opening of the sealed passage is located at the center of rotation of the valve body and is contained in the sealed box. Is installed so that the oil discharge passage penetrates the sealed box up and down, the lower opening of the oil discharge passage faces the upper opening of the sealed passage, and the upper opening of the oil discharge passage is the center of the sealed box. The connecting pipelines centered on the center of the sealed passage are symmetrically and fixedly connected to the upper and lower ends of the valve body, and the connecting pipelines are vertically connected to the upper and lower ends of the sealed passage. Facing the openings on both sides, one end of the connecting pipeline away from the sealed passage abuts on the lid of the well and the sealed box, respectively , and an oil passage moves up and down the connecting pipeline in the connecting pipeline. The oil passage is installed so as to penetrate the oil passage and the punch hole communicates with the sealing passage, and a sealing device is installed in the valve body, and the sealing device closes or closes the sealing passage by the sealing device. A slide plate that can be opened and can rotate around the center of the lid of the well is installed on the upper side of the ground so as to be slidable in the vertical direction, and the slide plate and the lid of the well can be slid in the vertical direction. is connected to the limiting space which opens upward in the slide plate is installed, by the sliding plate slides, the valve body is the restriction It can slide into the space and engage with the slide plate, and the sealing device can also be driven to close or open the sealing passage, and rotating devices are installed on both the left and right sides of the slide plate. , The rotating device can rotate the slide plate, an elevating device is connected to both left and right ends of the slide plate, and the elevating device can slide the slide plate.

Beneficially, the circular inner wall of the restricted space has six keyways that open upward in an annular arrangement, and six that communicate with the restricted space and are annularly arranged on the outer peripheral surface of the valve body. The two fixed keys are fixedly connected, and the fixed key can slide into the keyway and be connected to the slide plate, where the slide plate rotates and the fixed key attaches the valve body to the valve body. Rotate.

To be beneficial, an oil pump is fixedly connected to the upper end of the sealed box, and when the sealed passage and the oil discharge passage communicate with each other, the oil pump is started to start the oil pump, and the oil discharge passage, said. Oil is pumped from the oil well through the oil passage, the sealed passage, the drill hole, and the oil storage space, and the oil storage space temporarily pumps oil to prevent the oil from being pumped too fast. Can be stored.

The sealing device includes a telescopic rod that is symmetrically and fixedly connected to the lower inner wall of the restricted space, and six guide holes that open downward are arranged in an annular shape in the valve body. Six gear spaces are installed in the valve body, and the three guide holes on the left side communicate with the inner wall on the counterclockwise side of the three gear spaces on the left side, and the three guide holes on the right side. Is communicated with the inner wall on the clockwise side of the three gear spaces on the right side, and connecting gears are rotatably installed in the two gear spaces on the left side and the two gear spaces on the right side. A rack is fixedly installed on the rear end surface, and the connecting gear on the left side can mesh with the rack on the left side, and the connecting gear on the right side can mesh with the rack on the right side to accommodate the connecting gear. An angle of 180 degrees is formed between the two gear spaces located on both the left and right sides, and screws are fixedly connected in the four connecting gears to accommodate the connecting gears. A collection space is installed on the inner wall of the four gear spaces on the side close to the sealed passage, the collection space communicates with the sealed passage, and a stop plate is slidably installed in the collection space. , A screw hole opened toward the connecting gear is installed in the stop plate, the screw extends into the screw hole and is connected to the stop plate by a screw thread, and the slide plate slides upward. By doing so, the telescopic rod slides upward in conjunction with each other and enters the guide hole, and when the rack and the connecting gear mesh with each other, the rack slides upward to rotate the connecting gear. The screw slides the stop plate into the sealed passage and closes the sealed passage, at which time the oil cannot be pumped, the telescopic rod slides upward, and there is no connecting gear that meshes with the rack. At that time, the sealed passage is in an open state, and oil can be pumped up.

The rotating device includes a slide gear that is rotatably and slidably installed on the upper side of the ground, the slide gear is fixedly connected to the slide plate, and fixed gears are meshed with the left and right ends of the slide gear. A rotating shaft is fixedly connected to the lower end of the fixed gear, and the rotating motor is fixedly installed in the ground so as to be symmetrical, and the two lower ends of the rotating shaft are fixedly installed. Each is movably connected to the rotary motors on both sides,
The rotary motor is started, the fixed gear is driven and rotated by the rotating shaft, the slide gear is driven and rotated, the slide plate is driven and rotated, and the rotation angle of the slide plate is zero. It is within the range of more than 180 degrees and less than 180 degrees.

The elevating device includes an empty space installed symmetrically in the ground, a driving pulley is rotatably installed in the empty space, and a motor shaft is fixed in the driving pulley. A lifting motor is fixedly installed on the rear inner wall of the empty space, the rear end of the motor shaft is movably connected to the lifting motor, and fixed rods are left and right on the upper end of the ground. Symmetrically and fixedly connected, a belt groove opened downward is formed in the fixed rod, and a driven pulley is rotatably installed in the belt groove, and the driven pulley of the driven pulley The connecting shaft is fixedly connected to the inside, the driven pulley and the driving pulley are connected by a connecting belt, and a link is oscillatingly installed on the side of the fixed rod close to the center of symmetry. Inside, a through groove opened so as to be separated from the center of symmetry is formed so as to penetrate the link up and down, and the front end of the connecting shaft is fixedly connected to the front inner wall of the through groove, and the rear end is said. It is fixedly connected to the inner wall on the rear side of the through groove, and an arc groove opened upward so as to be away from the rotation center of the slide plate is formed in the slide plate so as to be symmetrical. The angle of is 180 degrees, a slider is slidably installed in the arc groove, and a concave groove opened toward the rotation center of the slide plate is formed in the slider, and the arc is formed. Since the inner wall on the side close to the center of symmetry in the groove extends into the concave groove and is connected to the slider, the slider does not separate from the arc groove, and a slide guide shaft is provided at the rear end of the slider. Fixedly connected, a position limiting groove opened forward is formed in the link, and the rear end of the slide guide shaft extends into the position limiting groove and can slide along the position limiting groove.
The elevating motor is started, the main pulley is driven by the motor shaft to rotate, the driven pulley is driven by the connecting belt to rotate, and the link is driven by the connecting shaft to swing. In the process in which the slider is driven by the slide guide shaft and slides up and down, the slide plate is further driven and slides up and down, and the link slides the slider, the slide guide shaft is along the position limiting groove. Can slide.

The effect of the present invention is: The present invention is installed at an open oil well mouth, and because of its large volume, it cannot be easily moved and is hard to break, and there is one method of opening a sealed passage inside the present invention to prevent theft. However, once the wrong method is used, the sealed passage is closed, at which time oil cannot be pumped from the oil well.

In order to explain the present invention in detail with reference to FIGS. 1 to 9 below and to explain the present invention in a convenient manner, the following directions are defined as follows: FIG. 1 is a front view of the apparatus of the present invention and is described in the present application. Each direction is the direction when the device is viewed in the same direction as in FIG.

FIG. 1 is a schematic diagram of the overall configuration of the present invention. FIG. 2 is a schematic configuration diagram in the AA direction in FIG. FIG. 3 is a schematic configuration diagram in the BB direction in FIG. FIG. 4 is an enlarged schematic view of part C in FIG. FIG. 5 is an enlarged schematic view of part D in FIG. FIG. 6 is a schematic configuration diagram in the EE direction in FIG. FIG. 7 is a schematic configuration diagram in the FF direction in FIG. FIG. 8 is a schematic configuration diagram in the GG direction in FIG. FIG. 9 is a schematic configuration diagram in the HH direction in FIG.

The present invention relates to an anti-theft valve for an oil well mouth, and is mainly used for preventing theft of an open oil well mouth, and will be further described below with reference to the drawings of the present invention.

The anti-theft valve for an oil well mouth according to the present invention includes a well lid 14, the well lid 14 is fixedly installed on the ground 17, and an oil well 15 opened upward in the ground 17. Is installed, an oil storage space 16 opened downward is installed in the lid 14 of the well, the oil storage space 16 faces the oil well 15, and the upper inner wall of the oil storage space 16 is upward. The opened hole 31 is installed so as to communicate with the oil storage space 16, a valve body 54 is rotatably installed above the lid 14 of the well, and the valve body 54 is inside the valve body 54. The connecting space 43 opened so as to be separated from the center of the well is installed so as to be vertically symmetrical, and the upper end of the lid 14 of the well extends into the connecting space 43 on the lower side and is rotatably connected to the valve body 54. A sealed box 29 having the center of the valve body 54 as the center of rotation is rotatably installed on the upper side of the valve body 54, and the lower end of the sealed box 29 extends into the connecting space 43 on the upper side. It is rotatably connected to the valve body 54, and a sealed passage 42 is installed in the valve body 54 so as to penetrate the valve body 54 up and down, and the lower opening of the sealed passage 42 is the valve body 54. Located at the center of rotation, an oil discharge passage 30 is installed in the sealed box 29 so as to penetrate the sealed box 29 up and down, and the lower opening of the oil discharge passage 30 is the upper opening of the sealed passage 42. The upper opening of the oil discharge passage 30 is located at the center of the sealed box 29, and the connecting pipeline 41 having the center of the sealed passage 42 as the center of symmetry is symmetrical at the upper and lower ends of the valve body 54. The connecting pipes 41 face the openings on both the upper and lower sides of the sealed passage 42, and one end of the connecting pipe 41 away from the sealed passage 42 is a lid of the well. The oil passage 40 is installed in the connecting pipe 41 so as to vertically penetrate the connecting pipe 41 in contact with the 14 and the sealed box 29, and the oil passage 40 is the oil discharge passage 30 and the said. A draft hole 31 is communicated with the sealing passage 42, a sealing device 100 is installed in the valve body 54, and the sealing passage 42 can be closed or opened by the sealing device 100, above the ground 17. A slide plate 39 that can rotate around the center of the lid 14 of the well is installed so as to be slidable in the vertical direction . The slide plate 39 and the lid 14 of the well are slidably connected in the vertical direction, a restricted space 49 opened upward is installed in the slide plate 39, and the slide plate 39 slides. The valve body 54 can slide into the restricted space 49 and mesh with the slide plate 39, and the sealing device 100 can also be driven to close or open the sealing passage 42 , the slide. Rotating devices 101 are installed on both the left and right sides of the plate 39, the rotating device 101 can rotate the slide plate 39, and elevating devices 102 are connected to both left and right ends of the slide plate 39, and the elevating device 102. Can slide the slide plate 39.

As an advantage, six key grooves 51 opened upward are arranged in an annular shape on the circular inner wall of the restricted space 49, communicate with the restricted space 49, and have an annular shape on the outer peripheral surface of the valve body 54. The six fixed keys 53 arranged are fixedly connected, and the fixed key 53 can slide into the key groove 51 and be connected to the slide plate 39, where the slide plate 39 rotates. The valve body 54 is rotated by the fixed key 53.

To be beneficial, an oil pump 56 is fixedly connected to the upper end of the sealed box 29, and when the sealed passage 42 and the oil outlet passage 30 communicate with each other, the oil pump 56 is started and the oil pump 56 is started. To pump oil from the oil well 15 through the oil outlet 30, the oil passage 40, the sealed passage 42, the punch hole 31, and the oil storage space 16 to prevent the oil from being pumped too fast. In addition, the oil storage space 16 can temporarily store oil.

The sealing device 100 includes a telescopic rod 47 that is symmetrically and fixedly connected to the lower inner wall of the restricted space 49, and six guide holes that open downward in the valve body 54. The 55s are arranged in an annular shape, six gear spaces 48 are installed in the valve body 54, and the three guide holes 55 on the left side communicate with the inner walls of the three gear spaces 48 on the left side on the counterclockwise side. Then, the three guide holes 55 on the right side communicate with the inner walls of the three gear spaces 48 on the right side on the clockwise side, and the two gear spaces 48 on the left side and the two gear spaces 48 on the right side are contained. The connecting gear 52 is rotatably installed, the rack 57 is fixedly installed on the rear end surface of the telescopic rod 47, the connecting gear 52 on the left side can mesh with the rack 57 on the left side, and the connecting on the right side. The gear 52 can mesh with the rack 57 on the right side, and an angle of 180 degrees is formed between the two gear spaces 48 located on both the left and right sides without accommodating the connecting gear 52. Screws 50 are fixedly connected to the four connecting gears 52, and a recovery space 44 is installed on the inner wall of the four gear spaces 48 accommodating the connecting gears 52 on the side close to the sealed passage 42. Then, the recovery space 44 communicates with the sealed passage 42, a stop plate 46 is slidably installed in the recovery space 44, and the stop plate 46 is opened toward the connecting gear 52. A screw hole 45 is installed, the screw 50 extends into the screw hole 45 and is connected to the stop plate 46 by a screw thread, and the slide plate 39 slides upward to interlock the telescopic rod 47. When the rack 57 and the connecting gear 52 mesh with each other by sliding upward into the guide hole 55, the rack 57 slides upward to rotate the connecting gear 52 and is stopped by the screw 50. The plate 46 slides into the sealed passage 42 and closes the sealed passage 42, at which time the telescopic rod 47 cannot pump oil and the telescopic rod 47 slides upward and meshes with the rack 57. When there is no screw, the sealed passage 42 is in an open state, and oil can be pumped up.

The rotating device 101 includes a slide gear 28 rotatably and slidably installed above the ground 17, and the slide gear 28 is fixedly connected to the slide plate 39 and is attached to both left and right ends of the slide gear 28. The fixed gear 13 is meshed with the fixed gear 13, the rotating shaft 12 is fixedly connected to the lower end of the fixed gear 13, and the rotating motor 11 is fixedly installed in the ground 17 so as to be symmetrical. Then, the lower ends of the two rotating shafts 12 are mobilably connected to the rotating motors 11 on both sides, respectively.
The rotary motor 11 is started, the fixed gear 13 is driven and rotated by the rotating shaft 12, the slide gear 28 is driven and rotated, the slide plate 39 is driven and rotated, and the slide plate is driven. The rotation angle of 39 is in the range of zero degrees or more and 180 degrees or less.

The elevating device 102 includes an empty space 18 installed symmetrically in the ground 17, and a main pulley 19 is rotatably installed in the empty space 18 in the main pulley 19. The motor shaft 20 is fixedly connected to the space, the elevating motor 33 is fixedly installed on the rear inner wall of the empty space 18, and the rear end of the motor shaft 20 is movably connected to the elevating motor 33. The fixed rod 21 is fixedly connected to the upper end of the ground 17 so as to be symmetrical, and a belt groove 23 opened downward is formed in the fixed rod 21. A driven pulley 25 is rotatably installed inside, a connecting shaft 24 is fixedly connected to the driven pulley 25, and the driven pulley 25 and the driving pulley 19 are connected by a connecting belt 22. A link 27 is swingably installed on the side of the fixed rod 21 close to the center of symmetry, and a through groove 26 opened so as to be separated from the center of symmetry penetrates the link 27 up and down in the link 27. The front end of the connecting shaft 24 is fixedly connected to the front inner wall of the through groove 26, and the rear end is fixedly connected to the rear inner wall of the through groove 26. Is formed so that the arc groove 38 opened upward so as to be away from the rotation center of the slide plate 39 is symmetrical, the angle of the arc groove 38 is 180 degrees, and the inside of the arc groove 38. A slider 35 is slidably installed in the slider 35, and a concave groove 37 opened toward the rotation center of the slide plate 39 is formed in the slider 35, and an inner wall on the side of the arc groove 38 close to the center of symmetry is formed. Is extended into the concave groove 37 and connected to the slider 35, so that the slider 35 does not separate from the arc groove 38, and the slide guide shaft 36 is fixedly connected to the rear end of the slider 35. A position limiting groove 34 opened forward is formed in the link 27, and the rear end of the slide guide shaft 36 can extend into the position limiting groove 34 and slide along the position limiting groove 34. ,
The elevating motor 33 is started, the main pulley 19 is driven and rotated by the motor shaft 20, the driven pulley 25 is driven and rotated by the connecting belt 22, and the link 27 is driven by the connecting shaft 24. In the process of swinging, the slide guide shaft 36 drives the slider 35 to slide up and down, the slide plate 39 is driven to slide up and down, and the link 27 slides the slider 35. , The slide guide shaft 36 can slide along the position limiting groove 34.

Hereinafter, the procedure for using the present invention will be described in detail with reference to FIGS. 1 to 9.

First, the slide plate 39 is in the lower limit position, the telescopic rod 47 does not extend into the guide hole 55, the stop plate 46 does not slide into the sealed passage 42, and the sealed passage 42 is opened. There is no communication with the oil passage 30, and the valve body 54 is not connected to the slide plate 39.

At the time of use, the rotary motor 11 is started, the fixed gear 13 is driven and rotated by the rotating shaft 12, the slide gear 28 is driven and rotated, the slide plate 39 is driven and rotated, and the telescopic rods 47 on both sides are driven. At this time, the slider 35 slides along the arc groove 38, the rotatable range of the slide plate 39 is zero or more and 180 degrees or less, and the telescopic rods 47 on both sides guide each side. Facing the hole 55, at this time, the rotary motor 11 is stopped and the elevating motor 33 is started, the main pulley 19 is driven by the motor shaft 20 to rotate, and the driven pulley 25 is driven by the connecting belt 22 to rotate. The link 27 is driven by the connecting shaft 24 to swing, the slider 35 is driven by the slide guide shaft 36 to slide upward, the slide plate 39 is further driven to slide upward, and the telescopic rod 47 is moved upward. Slide into the guide hole 55, stop the elevating motor 33 until the fixed key 53 slides into the keyway 51 and is connected to the slide plate 39, start the rotary motor 11 again, and then slide the slide plate 39 again. Is driven to rotate, and the fixed key 53 rotates the valve body 54 until the sealing passage 42 and the oil discharge passage 30 communicate with each other.

In the process of sliding the telescopic rod 47 upward, there is no connecting gear 52 that meshes with the rack 57, and the sealed passage 42 is in an open state. 56 is started, oil is pumped from the oil well 15 through the oil outlet passage 30, the oil passage 40, the sealed passage 42, the punch hole 31, and the oil storage space 16, and after pumping, the rotary motor 11 and the elevating motor 33 are moved. By starting in the opposite direction, the oil outlet passage 30 and the sealed passage 42 are not communicated with each other, and the oil in the sealed passage 42, the punch hole 31, and the oil storage space 16 is prevented from being stolen for the oil well mouth of the present invention. In the process of returning to the oil well 15 again until the valve returns to the initial position and the telescopic rod 47 slides upward, there is a connecting gear 52 that meshes with the rack 57, and the rack 57 slides upward to slide the connecting gear 52. Rotated, the stop plate 46 slides into the sealed passage 42 by the screw 50 and closes the sealed passage 42. At this time, by starting the oil pump 56, oil cannot be pumped from the oil well 15, and the lifting motor It is also not possible for 33 to operate in the opposite direction to slide the slide plate 39 downwards, at which time the sealed passage 42 is kept closed to prevent the oil in the oil well 15 from being stolen.

By the above method, those skilled in the art can make various modifications based on the working conditions within the scope of the present invention.

Claims (4)

An anti-theft valve for oil wells with an oil pump installed on the upper side of the sealed box.
Including the lid of the well
The lid of the well is fixedly installed on the ground, an oil well opened upward is installed in the ground, and an oil storage space opened downward is installed in the lid of the well. The storage space faces the oil well, a hole opened upward is installed in the upper inner wall of the oil storage space so as to communicate with the oil storage space, and a valve body can rotate above the lid of the well. In the valve body, the connecting space opened so as to be away from the center of the valve body is installed so as to be vertically symmetrical, and the upper end of the lid of the well is installed in the connecting space on the lower side. It extends and is rotatably connected to the valve body, and the sealed box having the center of the valve body as the center of rotation is rotatably installed on the upper side of the valve body, and the lower end of the sealed box is the upper connecting space. Extends into and rotatably connected to the valve body
A sealed passage is installed in the valve body so as to penetrate the valve body up and down, a lower opening of the sealed passage is located at the center of rotation of the valve body, and oil is discharged into the sealed box. The passage is installed so as to penetrate the sealed box up and down, the lower opening of the oil discharge passage faces the upper opening of the sealed passage, and the upper opening of the oil discharge passage is located at the center of the sealed box. , The connecting pipelines centered on the center of the sealed passage are symmetrically and fixedly connected to the upper and lower ends of the valve body, and the connecting pipelines are opened on both the upper and lower sides of the sealed passage. In the connecting pipe, one end away from the sealed passage abuts on the lid of the well and the sealed box, respectively, and the oil passage penetrates the connecting pipe up and down in the connecting pipe. The oil passage communicates the oil discharge passage and the punch hole with the sealed passage.
A sealing device is installed in the valve body, and the sealing passage can be closed or opened by the sealing device, and a slide plate that can rotate around the center of the lid of the well is moved up and down on the upper side of the ground. It is installed so as to be slidable in the direction, the slide plate and the lid of the well are slidably connected in the vertical direction, a restricted space opened upward is installed in the slide plate, and the slide plate slides. Thereby, the valve body can slide into the restricted space and mesh with the slide plate, and the sealing device can be driven to close or open the sealing passage in the horizontal direction. When one side is the first side and the side opposite to the first side is the second side, rotating devices are installed on the first side and the second side of the slide plate. , The rotating device can rotate the slide plate, an elevating device is connected to the first side and the second side of the slide plate, and the elevating device can slide the slide plate. Can,
Six key grooves opened upward are arranged in a ring shape on the circular inner wall of the restricted space, and six fixed keys arranged in a ring shape are fixed on the outer peripheral surface of the valve body so as to communicate with the restricted space. The fixed key can slide into the keyway and be connected to the slide plate, where the slide plate is rotated to rotate the valve body by the fixed key.
The elevating device includes an empty space in the ground so as to be symmetrical with respect to the first side and the second side, and a driving pulley is rotatably installed in the empty space. A motor shaft is fixedly connected to the driving pulley, an elevating motor is fixedly installed on the rear inner wall of the empty space, and the rear end of the motor shaft is movably connected to the elevating motor. ,
A fixed rod is fixedly connected to the upper end of the ground so as to be symmetrical to the first side and the second side , and a belt groove opened downward is formed in the fixed rod. A driven pulley is rotatably installed in the belt groove, a connecting shaft is fixedly connected in the driven pulley, and the driven pulley and the driving pulley are connected by a connecting belt.
A link is swingably installed on the side of the fixed rod close to the center of symmetry, and a through groove opened away from the center of symmetry is formed in the link so as to penetrate the link up and down. The front end of the connecting shaft is fixedly connected to the front inner wall of the through groove, and the rear end is fixedly connected to the rear inner wall of the through groove.
In the slide plate, an arc groove opened upward so as to be away from the rotation center of the slide plate is formed so as to be symmetrical to the first side and the second side, and the angle of the arc groove is formed. Is 180 degrees, a slider is slidably installed in the arc groove, and a concave groove opened toward the rotation center of the slide plate is formed in the slider. Since the inner wall on the side close to the center of symmetry extends into the concave groove and is connected to the slider, the slider does not separate from the arc groove.
A slide guide shaft is fixedly connected to the rear end of the slider, a position limiting groove opened forward is formed in the link, and the rear end of the slide guide shaft extends into the position limiting groove. An anti-theft valve for an oil well opening, which is characterized by being able to slide along the position limiting groove. The anti-theft valve for an oil well mouth according to claim 1, wherein the oil pump is fixedly connected to the upper end of the sealed box. The sealing device includes telescopic rods on the first side and the second side that are symmetrically and fixedly connected to the lower inner wall of the restricted space .
Six guide holes opened downward are arranged in an annular shape in the valve body, six gear spaces are installed in the valve body, and the three guide holes on the first side are the first. It communicates with the counterclockwise inner wall of the three gear spaces on the one side, and the three guide holes on the second side are connected to the clockwise inner wall of the three gear spaces on the second side. In communication, connecting gears are rotatably installed in the two gear spaces on the first side and the two gear spaces on the second side .
A rack is fixedly installed on the rear end surface of the telescopic rod, and the connecting gear on the first side and the connecting gear on the second side are the rack on the first side and the second on the second side, respectively. It can mesh with the rack on the first side, and an angle of 180 degrees is formed between the gear space on the first side and the gear space on the second side .
Screws are fixedly connected to the four connecting gears, and a recovery space is provided on the inner wall of the four gear spaces accommodating the connecting gears on the side close to the sealed passage, and the recovery space is provided. A stop plate is slidably installed in the collection space so as to communicate with the sealed passage, and a screw hole opened toward the connecting gear is installed in the stop plate, and the screw is the screw hole. The anti-theft valve for an oil well mouth according to claim 1, wherein the valve extends into the inside and is connected to the stop plate by a screw thread. The rotating device includes a slide gear that is rotatably and slidably installed on the upper side of the ground, the slide gear is fixedly connected to the slide plate, and the first side and the second side of the slide gear are fixedly connected to the slide plate. A fixed gear is meshed on the side of the fixed gear , a rotating shaft is fixedly connected to the lower end of the fixed gear, and a rotating motor is symmetrical to the first side and the second side in the ground. Theft for an oil well mouth according to claim 1, wherein the lower ends of the two rotating shafts are movably connected to the rotating motors on both sides, respectively , so as to be fixedly installed. Prevention valve.

Images